阅读说明：本技术 一种增强型塑料管道材料的制备工艺 (Preparation process of reinforced plastic pipeline material ) 是由 张玉勇 姜俊杰 张哲� 姜浩 刘磊 于 2019-09-23 设计创作，主要内容包括：本发明公开了一种增强型塑料管道材料的制备工艺,包括如下步骤：步骤S1、备料；步骤S2、混料；步骤S3、熔融：利用塑料挤出机将共混料熔融,并将熔融料向外输出；步骤S4、挤出：将熔融料挤出成型,输出成型的管坯；步骤S5、定型：将挤出成型的管坯定径；步骤S6、冷却：将成型产品由管材成型冷却喷淋装置进行降温冷却。本发明通过采用聚氯乙烯为管材基材,并通过增强填料对基材进行增韧增强处理,使得到的管材具有优异的力学性能和耐腐蚀性能；同时,采用特制的管材成型冷却喷淋装置对成型后的管材进行冷却降温,不仅能够使管材均匀降温,保证塑料管道的质量,还能达到水资源的循环利用的目的,方法简单易行,具有较广的应用范围。(The invention discloses a preparation process of an enhanced plastic pipeline material, which comprises the following steps: step S1, preparing materials; step S2, mixing materials; step S3, melting: melting the blend by using a plastic extruder, and outputting the molten material outwards; step S4, extrusion: extruding and molding the molten material, and outputting a molded pipe blank; step S5, shaping: sizing the extruded tube blank; step S6, cooling: and cooling the molded product by a pipe molding cooling spraying device. According to the invention, polyvinyl chloride is used as a base material of the pipe, and the base material is subjected to toughening and reinforcing treatment by reinforcing filler, so that the obtained pipe has excellent mechanical properties and corrosion resistance; meanwhile, the formed pipe is cooled by adopting a special pipe forming cooling spraying device, so that the pipe can be uniformly cooled, the quality of the plastic pipeline is ensured, the aim of recycling water resources can be fulfilled, and the method is simple and easy and has a wide application range.)

1. A preparation process of a reinforced plastic pipeline material is characterized by comprising the following steps:

step S1, preparing materials: the weight portions are as follows: preparing raw materials of 90-100 parts of polyvinyl chloride resin, 4-5 parts of chlorinated polyvinyl chloride, 3-4 parts of reinforcing filler, 2-3 parts of stabilizer, 0.3-0.5 part of stearic acid and 0.4-0.5 part of liquid paraffin;

step S2, mixing materials: mixing the raw materials in a high-speed mixer, firstly mixing at 500r/min, and when the mixing temperature reaches 110-120 ℃, rotating to 200r/min for low-speed mixing until the temperature reaches 45-50 ℃ to obtain a mixed material;

step S3, melting: melting the blend by using a plastic extruder, and outputting the molten material outwards;

step S4, extrusion: extruding and molding the molten material, and outputting a molded pipe blank;

step S5, shaping: sizing the extruded tube blank, and outputting a formed product;

step S6, cooling: get into and place the shaping product on bearing frame (19) by bearing device (1) side of tubular product shaping cooling spray set, make spray straight tube (21) be located the shaping product inside, adjust the height that bears frame (19) through controlling first motor, make spray straight tube (21) be located the axis position department of shaping product, open the cooling water that spray straight tube (21) and spray ring canal (24) are connected, spray straight tube (21) and cool off the inner wall of shaping product, spray ring canal (24) and cool off the outer wall of shaping product, after the cooling, export final product, make enhancement mode plastic conduit material.

2. A process for preparing a reinforced plastic pipe material as claimed in claim 1, wherein the reinforcing filler is prepared by the following method:

(1) placing the nano calcium carbonate in a vacuum drying oven at 100 ℃ and-0.05 MPa for drying for 30min, and sealing for later use;

(2) preparing an acetone solution with the mass fraction of 60%, adjusting the pH value to 4.9-5.2 by using acetic anhydride, adding a silane coupling agent KH-590 into the mixture at room temperature under uniform stirring, and dissolving the silane coupling agent KH-590; the adding amount of the silane coupling agent KH-590 is 5 percent of the mass of the acetone solution;

(3) according to the solid-liquid ratio of 1 g: adding 15mL of nano calcium carbonate into the solution, performing ultrasonic treatment for 35-40min, filtering, and performing vacuum drying to obtain pre-modified nano calcium carbonate particles;

(4) adding dimethyl sulfoxide, a coupling agent SEA-17, azodiisobutyronitrile and 2-methylpyridine into a three-necked bottle provided with a stirrer, a reflux condenser and a dropping funnel, adding pre-modified nano calcium carbonate particles, carrying out ultrasonic treatment for 10min, heating to 75-80 ℃ in an oil bath, dropwise adding methyl methacrylate at the speed of 8-10 drops/s, stirring at a constant temperature to keep reaction for 115-fold reaction for 120min, carrying out filtration, suction filtration and high-speed centrifugal treatment on a product, cleaning with absolute ethyl alcohol and acetone for three times respectively, and carrying out vacuum drying to obtain the reinforcing filler.

3. The process for preparing the reinforced plastic pipeline material according to claim 1, wherein the pipe molding cooling spray device comprises a bearing device (1), a spray device (2) and a molded product (3), wherein the spray device (2) is arranged on the bearing device (1);

the bearing device (1) comprises a supporting base plate (11) and a bearing base plate (12), a first shaft rod is installed on the lower surface of the bearing base plate (12), a first gear (14) is fixed on the first shaft rod, two first circular through holes are formed in the surface of the bearing base plate (12), the two first circular through holes are located on two sides of the first shaft rod (12), a first threaded shaft (15) is installed in each first circular through hole, the first threaded shaft (15) is rotatably connected with the bearing base plate (12), a second gear (16) is fixed at the bottom end of each first threaded shaft (15), the first gear (14) is meshed with the two second gears (16), a bearing frame (19) is installed on each first threaded shaft (15), and the bearing frame (19) is installed on the corresponding threaded shaft (15); a circulating water storage box (17) and a side plate (18) are fixed on the upper surface of the bearing bottom plate (12), the side plate (18) is located on one side of the circulating water storage box (17), a second circular through hole (1801) and a third circular through hole (1802) are sequentially formed in the surface of the side plate (18) from bottom to top, two second limiting rods (1803) are vertically fixed on the surface of the side plate (18), and the two second limiting rods (1803) are located on two sides of the third circular through hole (1802) respectively;

the spraying device (2) comprises a spraying straight pipe (21), a second threaded shaft (22), a sliding block (23) and a spraying ring pipe (24), the spraying straight pipe (21) is installed on the side plate (18) through a second circular through hole (1801), the spraying straight pipe (21) is rotatably connected with the side plate (18), and a third gear (2101) is fixed on the spraying straight pipe (21); the second threaded shaft (22) is mounted on the side plate (18) through a third circular through hole (1802), the second threaded shaft (22) is rotatably connected with the side plate (18), a fourth gear (2201) is fixed on the second threaded shaft (22), and the fourth gear (2201) is meshed with the third gear (2101); a second threaded through hole (2301) and two fourth circular through holes (2302) are formed in the surface of the sliding block (23), the second threaded through hole (2301) is in threaded fit with the second threaded shaft (22), the fourth circular through holes (2302) are in fit with the second limiting rod (1803), and an installation cylinder (2303) is further fixed on the surface of the lower end of the sliding block (23); a water inlet straight pipe (2401) and a connecting rod (2402) are arranged on the peripheral side of the spraying ring pipe (24), the connecting rod (2402) is matched with the mounting cylinder (2303), the spraying ring pipe (24) is mounted on the sliding block (23) through the connecting rod (2402), and the spraying ring pipe (24) and the spraying straight pipe (21) are coaxially arranged;

the molded product (3) is placed on the carrier (19).

4. The preparation process of a reinforced plastic pipeline material according to claim 3, wherein the supporting bottom plate (11) and the bearing bottom plate (12) are arranged in parallel, and the supporting bottom plate (11) and the bearing bottom plate (12) are fixedly connected through the upright posts (13).

5. The process for preparing a reinforced plastic pipe material as claimed in claim 3, wherein the first shaft is mounted on the lower surface of the bearing bottom plate (12) through a bearing, and the first shaft is connected with a first motor.

6. The preparation process of the reinforced plastic pipeline material as claimed in claim 3, wherein the bearing frame (19) comprises a first arc-shaped plate (1901) and a second arc-shaped plate (1902) fixed on the first arc-shaped plate (1901), the second arc-shaped plate (1902) is fixed on the arc-shaped side wall of the first arc-shaped plate (1901) and has the same radian as the first arc-shaped plate (1901), a first threaded through hole (1903) is formed in the surface of the second arc-shaped plate (1902), the first threaded through hole (1903) is in threaded fit with the first threaded shaft (15), a first limiting rod is fixed on the surface of the bearing bottom plate (12), and a circular through hole in fit with the first limiting rod is formed in the surface of the second arc-shaped plate (1902).

7. The process for preparing the reinforced plastic pipeline material as claimed in claim 3, wherein the side wall of the straight spraying pipe (21) is uniformly provided with water spraying holes, the inner side wall of the circular spraying pipe (24) is uniformly provided with water spraying holes along the circumferential direction, and both the straight spraying pipe (21) and the circular spraying pipe (24) are connected to a cooling water source through hoses.

Technical Field

The invention belongs to the technical field of plastic pipeline materials, and particularly relates to a preparation process of an enhanced plastic pipeline material.

Background

The plastic pipe is used as an important component of a chemical building material, and the chemical building material is a fourth major novel building material which is newly developed after steel, wood and cement. In recent years, chemical building materials have been advanced and developed rapidly. The plastic pipe has the advantages of small water flow loss, energy conservation, material saving, ecological protection, convenient completion and the like, is widely applied to the fields of building water supply and drainage, town water supply and drainage, gas pipes and the like, and becomes the main force of urban building pipe networks. However, the plastic pipe generally has the defects of low rigidity, poor dimensional stability and easy creep and stress relaxation damage, and a single resin material cannot meet the requirements of special working conditions such as high load, easy sedimentation and the like, and is often required to be reinforced and toughened by a modification means.

The invention patent CN1844722A discloses a continuous filament winding reinforced plastic pipe, which adopts a continuous filament reinforced thermoplastic plastic pipe, winds and forms plastic pipes with different calibers, winds continuous fiber bundles coated by a binder on the plastic pipe with a bottom layer, or performs online composite extrusion coating, winds the continuous fiber bundles on a heated cylindrical stainless steel blank in situ, and superposes the continuous filament reinforced plastic pipe layer by layer to form the continuous filament reinforced plastic pipe with a specified inner diameter. The pipe produced by the application is modified by adopting continuous long fibers, has high strength and high tensile strength, but the pipe can only be reinforced in a single direction due to the one-dimensional distribution of fiber bundles in matrix resin, and the toughness and the impact resistance of the whole pipe cannot be effectively improved.

Disclosure of Invention

The invention aims to provide a preparation process of a reinforced plastic pipeline material, wherein polyvinyl chloride is used as a pipe base material, and the base material is subjected to toughening and reinforcing treatment by reinforcing filler, so that the obtained pipe has excellent mechanical property and corrosion resistance; meanwhile, the special pipe forming cooling spraying device is adopted to carry out cooling treatment on the extruded and formed pipe, so that the pipe can be uniformly cooled, the quality of the plastic pipeline is ensured, the aim of recycling water resources can be fulfilled, and the method is simple and easy to implement and has a wide application range.

The purpose of the invention can be realized by the following technical scheme:

a preparation process of a reinforced plastic pipeline material comprises the following steps:

step S1, preparing materials: the weight portions are as follows: preparing raw materials of 90-100 parts of polyvinyl chloride resin, 4-5 parts of chlorinated polyvinyl chloride, 3-4 parts of reinforcing filler, 2-3 parts of stabilizer, 0.3-0.5 part of stearic acid and 0.4-0.5 part of liquid paraffin;

step S2, mixing materials: mixing the raw materials in a high-speed mixer, firstly mixing at 500r/min, and when the mixing temperature reaches 110-120 ℃, rotating to 200r/min for low-speed mixing until the temperature reaches 45-50 ℃ to obtain a mixed material;

step S3, melting: melting the blend by using a plastic extruder, and outputting the molten material outwards;

step S4, extrusion: extruding and molding the molten material, and outputting a molded pipe blank;

step S5, shaping: sizing the extruded tube blank, and outputting a formed product;

step S6, cooling: get into and place the shaping product on bearing the frame by tubular product shaping cooling spray set's the side of bearing the device, make spray the straight tube and be located the shaping product inside, adjust the height that bears the frame through controlling first motor, make spray the axis position department that the straight tube is located the shaping product, open the cooling water that sprays the straight tube and spray the ring canal and connect, spray the straight tube and cool off the inner wall of shaping product, spray the ring canal and cool off the outer wall of shaping product, after the cooling, export final product, make enhancement mode plastic conduit material.

Further, the reinforcing filler is prepared by the following method:

(1) placing the nano calcium carbonate in a vacuum drying oven at 100 ℃ and-0.05 MPa for drying for 30min, and sealing for later use;

(2) preparing an acetone solution with the mass fraction of 60%, adjusting the pH value to 4.9-5.2 by using acetic anhydride, adding a silane coupling agent KH-590 into the mixture at room temperature under uniform stirring, and dissolving the silane coupling agent KH-590; the adding amount of the silane coupling agent KH-590 is 5 percent of the mass of the acetone solution;

(3) according to the solid-liquid ratio of 1 g: adding 15mL of nano calcium carbonate into the solution, performing ultrasonic treatment for 35-40min, filtering, and performing vacuum drying to obtain pre-modified nano calcium carbonate particles;

(4) adding dimethyl sulfoxide, a coupling agent SEA-17, azodiisobutyronitrile and 2-methylpyridine into a three-necked bottle provided with a stirrer, a reflux condenser and a dropping funnel, adding pre-modified nano calcium carbonate particles, carrying out ultrasonic treatment for 10min, heating to 75-80 ℃ in an oil bath, dropwise adding methyl methacrylate at the speed of 8-10 drops/s, stirring at a constant temperature to keep reaction for 115-fold reaction for 120min, carrying out filtration, suction filtration and high-speed centrifugal treatment on a product, cleaning with absolute ethyl alcohol and acetone for three times respectively, and carrying out vacuum drying to obtain the reinforcing filler.

Further, the pipe forming cooling spraying device comprises a bearing device, a spraying device and a formed product, wherein the spraying device and the formed product are installed on the bearing device;

the bearing device comprises a supporting base plate and a bearing base plate, wherein a first shaft rod is arranged on the lower surface of the bearing base plate, a first gear is fixed on the first shaft rod, two first circular through holes are formed in the surface of the bearing base plate and are positioned on two sides of the first shaft rod, a first threaded shaft is installed in each first circular through hole and is rotatably connected with the bearing base plate, a second gear is fixed at the bottom end of each first threaded shaft, the first gear is meshed with the two second gears, a bearing frame is installed on each first threaded shaft, and the bearing frame is installed on the threaded shafts; the upper surface of the bearing bottom plate is fixedly provided with a circulating water storage tank and a side plate, the side plate is positioned on one side of the circulating water storage tank, the surface of the side plate is sequentially provided with a second circular through hole and a third circular through hole from bottom to top, the surface of the side plate is vertically and fixedly provided with two second limiting rods, and the two second limiting rods are respectively positioned on two sides of the third circular through hole;

the spraying device comprises a spraying straight pipe, a second threaded shaft, a sliding block and a spraying ring pipe, the spraying straight pipe is arranged on the side plate through a second circular through hole, the spraying straight pipe is rotatably connected with the side plate, and a third gear is fixed on the spraying straight pipe; the second threaded shaft is arranged on the side plate through a third circular through hole, the second threaded shaft is rotationally connected with the side plate, a fourth gear is fixed on the second threaded shaft, and the fourth gear is meshed with the third gear; a second threaded through hole and two fourth circular through holes are formed in the surface of the sliding block, the second threaded through hole is in threaded fit with the second threaded shaft, the fourth circular through holes are in fit with the second limiting rod, and a mounting cylinder is further fixed on the surface of the lower end of the sliding block; a water inlet straight pipe and a connecting rod are arranged on the periphery of the spraying ring pipe, the connecting rod is matched with the mounting cylinder, the spraying ring pipe is mounted on the sliding block through the connecting rod, and the spraying ring pipe and the spraying straight pipe are arranged coaxially;

the molded product is placed on the bearing frame.

Furthermore, the supporting bottom plate and the bearing bottom plate are arranged in a row and are connected and fixed through the upright posts.

Furthermore, the first shaft lever is mounted on the lower surface of the bearing bottom plate through a bearing, and the first shaft lever is connected with a first motor.

Further, bear the frame and include first arc and be fixed in the second arc on the first arc, the second arc is fixed in the arc lateral wall of first arc and is the same with the radian of first arc, and first screw thread through-hole has been seted up on the surface of second arc, and first screw thread through-hole and first screw thread shaft screw-thread fit bear the fixed surface of bottom plate and have first gag lever post, the circular through-hole with first gag lever post complex is seted up on the surface of second arc.

Furthermore, the side wall of the spraying straight pipe is uniformly provided with water spraying holes, the inner side wall of the spraying ring pipe is uniformly provided with water spraying holes along the circumferential direction, and the spraying straight pipe and the spraying ring pipe are both connected to a cooling water source through hoses.

The invention has the beneficial effects that:

the pipe adopts polyvinyl chloride as a pipe base material, reinforcing filler is added to reinforce the polyvinyl chloride material, the reinforcing filler adopts modified nano calcium carbonate, the nano calcium carbonate is firstly subjected to surface modification through a silane coupling agent, so that silane molecular chains are grafted on the surface of the nano calcium carbonate, and then the copolymerization reaction of polymethyl methacrylate is carried out on the surface of the nano calcium carbonate which is subjected to pre-modification, so that the macromolecular chains of the polymethyl methacrylate are grafted on nano calcium carbonate particles; after polymer grafting, a plurality of active groups (ester groups and double bonds) and free radicals are added on the surface, physical action and chemical reaction are easy to occur with a PVC matrix, longitudinal and transverse polymerization is generated among PVC long-chain linear molecules to form a net structure, the cross-linking density in space is increased, the defect of the organic matrix linear long-chain molecules is overcome, and the effect of enhancing and toughening the PVC matrix is achieved; in addition, the organic layer on the surface of the nano calcium carbonate particles increases the compatibility between the inorganic nano particles and the high polymer matrix, enhances the bonding elasticity between the two phases, ensures that the molecular chains of the matrix have enough capacity to resist external force and contain deformation, and promotes the enhancement and toughening capacity of the PVC base material; besides, the modified nano calcium carbonate particles realize interface action and graft bonding with a matrix, and part of particles are filled in gaps among polymer linear long-chain molecules, so that the compactness of the PVC base material is improved, when the composite material is stressed and loaded, relative displacement occurs among the gaps, the load is dissipated under the action of balls, when the material is stressed and generates 'silver lines', the material is inlaid on the cracks to generate 'elastic deformation' to dissipate energy on the cracks, the extension, deepening and communication of the 'silver lines' are prevented, and the reinforcing and toughening effects of the composite material are further enhanced;

the self-made pipe forming cooling spray device is adopted to cool the formed pipe, the formed product enters from the side surface of the bearing device and is placed on the bearing frame, the spray straight pipe is positioned in the formed product, the height of the bearing frame is adjusted by controlling the first motor, the spray straight pipe is just positioned at the axis position of the formed product, the spray straight pipe rotates continuously, cooling water is sprayed out from the water spray holes and is sprayed to the periphery under the action of centrifugal force, and the inner wall of the formed product is cooled; meanwhile, the cooling water connected with the spray ring pipe is sprayed out from the water spraying holes, and the spray ring pipe is sleeved on the formed product, so that the cooling water is sprayed to the formed product from eight directions on four sides relative to the formed product, and the spray ring pipe is driven by the sliding block to move back and forth along the axial direction of the formed product, so that the spray ring pipe can comprehensively cool the outer wall of the formed product; the spray straight pipe continuously rotates to spray and cool the inner wall of the formed product, the spray ring pipe cools the outer wall of the formed product in the direction of 360 degrees, the spray straight pipe and the spray ring pipe are driven by the same motor and supplement each other to cool the formed product comprehensively, so that the formed product can be cooled uniformly, and the quality of the pipe is improved; in addition, the spray straight pipe and the spray ring pipe are connected to a cooling water source through a hose, the cooling water source comprises a direct cooling water source and circulating cooling water in the circulating water storage tank, and the cooled water directly enters the circulating water storage tank to be cooled and stored, can be recycled again, and achieves the purpose of saving water resources; the specially-made pipe forming cooling spraying device is used for cooling the formed product, so that the cooling uniformity of the pipe can be improved, the quality of the pipe is improved, and in addition, water resources can be recycled to achieve the purpose of saving water resources;

according to the invention, polyvinyl chloride is used as a base material of the pipe, and the base material is subjected to toughening and reinforcing treatment through the reinforcing filler, so that the obtained pipe has excellent mechanical properties and corrosion resistance; meanwhile, the special pipe forming cooling spraying device is adopted to carry out cooling treatment on the extruded and formed pipe, so that the pipe can be uniformly cooled, the quality of the plastic pipeline is ensured, the aim of recycling water resources can be fulfilled, and the method is simple and easy to implement and has a wide application range.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic structural view of a pipe forming cooling spray device according to the present invention;

FIG. 2 is a schematic structural view of a carrying device of the pipe forming cooling spray device of the present invention;

FIG. 3 is a schematic view of a portion of the structure of FIG. 2;

FIG. 4 is a schematic view of a portion of the structure of FIG. 3;

FIG. 5 is a schematic structural view of a spray device of the pipe forming cooling spray device of the present invention;

FIG. 6 is a schematic view of a portion of the structure of FIG. 5;

fig. 7 is a partial structural schematic diagram of fig. 5.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A preparation process of a reinforced plastic pipeline material comprises the following steps:

step S1, preparing materials: the weight portions are as follows: preparing raw materials of 90-100 parts of polyvinyl chloride resin, 4-5 parts of chlorinated polyvinyl chloride, 3-4 parts of reinforcing filler, 2-3 parts of stabilizer, 0.3-0.5 part of stearic acid and 0.4-0.5 part of liquid paraffin;

the stabilizer is an organic tin stabilizer or a calcium-zinc composite stabilizer;

the reinforcing filler is prepared by the following method:

(1) placing the nano calcium carbonate in a vacuum drying oven at 100 ℃ and-0.05 MPa for drying for 30min, and sealing for later use;

(2) preparing an acetone solution with the mass fraction of 60%, adjusting the pH value to 4.9-5.2 by using acetic anhydride, adding a silane coupling agent KH-590 into the mixture at room temperature under uniform stirring, and dissolving the silane coupling agent KH-590; the adding amount of the silane coupling agent KH-590 is 5 percent of the mass of the acetone solution;

(3) according to the solid-liquid ratio of 1 g: adding 15mL of nano calcium carbonate into the solution, performing ultrasonic treatment for 35-40min, filtering, and performing vacuum drying to obtain pre-modified nano calcium carbonate particles;

(4) adding dimethyl sulfoxide, a coupling agent SEA-17, azodiisobutyronitrile and 2-methylpyridine into a three-necked bottle provided with a stirrer, a reflux condenser and a dropping funnel, adding pre-modified nano calcium carbonate particles, carrying out ultrasonic treatment for 10min, heating to 75-80 ℃ in an oil bath, dropwise adding methyl methacrylate at the speed of 8-10 drops/s, stirring at a constant temperature to keep reaction for 115-fold reaction for 120min, carrying out filtration, suction filtration and high-speed centrifugal treatment on a product, cleaning with absolute ethyl alcohol and acetone for three times respectively, and carrying out vacuum drying to obtain a reinforcing filler;

the mass ratio of methyl methacrylate to dimethyl sulfoxide to the coupling agent SEA-17 to azodiisobutyronitrile to the 2-methylpyridine to the pre-modified nano calcium carbonate is 10: 100:0.8:0.5: 0.3: 1;

firstly, carrying out surface modification on nano calcium carbonate by using a silane coupling agent to graft silane molecular chains on the surface of the nano calcium carbonate, and then carrying out copolymerization reaction of polymethyl methacrylate on the surface of the nano calcium carbonate subjected to pre-modification to graft polymer chains of the polymethyl methacrylate on nano calcium carbonate particles; after polymer grafting, a plurality of active groups (ester groups and double bonds) and free radicals are added on the surface, physical action and chemical reaction are easy to occur with a PVC matrix, longitudinal and transverse polymerization is generated among PVC long-chain linear molecules to form a net structure, the cross-linking density in space is increased, the defect of the organic matrix linear long-chain molecules is overcome, and the effect of enhancing and toughening the PVC matrix is achieved; in addition, the organic layer on the surface of the nano calcium carbonate particles increases the compatibility between the inorganic nano particles and the high polymer matrix, enhances the bonding elasticity between the two phases, ensures that the molecular chains of the matrix have enough capacity to resist external force and contain deformation, and promotes the enhancement and toughening capacity of the PVC base material; besides, the modified nano calcium carbonate particles realize interface action and graft bonding with a matrix, and part of particles are filled in gaps among polymer linear long-chain molecules, so that the compactness of the PVC base material is improved, when the composite material is stressed and loaded, relative displacement occurs among the gaps, the load is dissipated under the action of balls, when the material is stressed and generates 'silver lines', the material is inlaid on the cracks to generate 'elastic deformation' to dissipate energy on the cracks, the extension, deepening and communication of the 'silver lines' are prevented, and the reinforcing and toughening effects of the composite material are further enhanced;

step S2, mixing materials: mixing the raw materials in a high-speed mixer, firstly mixing at 500r/min, and rotating to 200r/min for low-speed stirring when the mixing temperature reaches 110-;

step S3, melting: melting the blend by using a plastic extruder, and outputting the molten material outwards;

step S4, extrusion: extruding and molding the molten material, and outputting a molded pipe blank;

step S5, shaping: sizing the extruded tube blank, and outputting a formed product;

step S6, cooling: a molded product enters from the side surface of a bearing device 1 of a pipe molding cooling spray device and is placed on a bearing frame 19, a spray straight pipe 21 is positioned in the molded product, the height of the bearing frame 19 is adjusted by controlling a first motor, so that the spray straight pipe 21 is positioned at the axis position of the molded product, cooling water connected with the spray straight pipe 21 and a spray ring pipe 24 is started, the spray straight pipe 21 cools the inner wall of the molded product, the spray ring pipe 24 cools the outer wall of the molded product, and after cooling is finished, a final product is output to prepare the reinforced plastic pipeline material;

referring to fig. 1-7, the pipe forming cooling spray device in step S6, as shown in fig. 1, includes a carrier 1, a spray device 2 and a formed product 3 mounted on the carrier 1;

as shown in fig. 2 and 3, the carrying device 1 includes a supporting bottom plate 11 and a carrying bottom plate 12, specifically, the supporting bottom plate 11 and the carrying bottom plate 12 are arranged in parallel, and the supporting bottom plate 11 and the carrying bottom plate 12 are connected and fixed by an upright post 13; a first shaft rod is arranged on the lower surface of the bearing bottom plate 12, a first gear 14 is fixed on the first shaft rod, specifically, the first shaft rod is arranged on the lower surface of the bearing bottom plate 12 through a bearing, and the first shaft rod is connected with a first motor; the surface of the bearing bottom plate 12 is provided with two first circular through holes, the two first circular through holes are located at two sides of the first shaft 12, a first threaded shaft 15 is installed in the first circular through hole, the first threaded shaft 15 is rotatably connected with the bearing bottom plate 12, a second gear 16 is fixed at the bottom end of the first threaded shaft 15, the first gear 14 is meshed with the two second gears 16, a bearing frame 19 is further installed on the first threaded shaft 15, specifically, as shown in fig. 4, the bearing frame 19 comprises a first arc-shaped plate 1901 and a second arc-shaped plate 1902 fixed on the first arc-shaped plate 1901, the second arc-shaped plate 1902 is fixed on the arc-shaped side wall of the first arc-shaped plate 1901 and has the same radian as the first arc-shaped plate 1901, the surface of the second arc-shaped plate 1902 is provided with a first threaded through hole 1903, the first threaded through hole 1903 is in threaded fit with the first threaded shaft 15, it should be noted that the surface of the bearing bottom plate 12 is fixed with, the surface of the second arc-shaped plate 1902 is provided with a circular through hole matched with the first limiting rod, and under the limiting action of the first limiting rod, the bearing frame 19 moves along the axial direction under the rotating action of the first threaded shaft 15; a circulating water storage tank 17 and a side plate 18 are fixed on the upper surface of the bearing bottom plate 12, the circulating water storage tank 17 is used for containing used cooling water, the side plate 18 is positioned on one side of the circulating water storage tank 17, a second circular through hole 1801 and a third circular through hole 1802 are sequentially formed in the surface of the side plate 18 from bottom to top, two second limiting rods 1803 are vertically fixed on the surface of the side plate 18, and the two second limiting rods 1803 are respectively positioned on two sides of the third circular through hole 1802;

as shown in fig. 5, the spraying device 2 comprises a spraying straight pipe 21, a second threaded shaft 22, a sliding block 23 and a spraying ring pipe 24, specifically, the spraying straight pipe 21 is mounted on the side plate 18 through a second circular through hole 1801, the spraying straight pipe 21 is rotatably connected with the side plate 18, a third gear 2101 is fixed on the spraying straight pipe 21, water spray holes are uniformly formed in the side wall of the spraying straight pipe 21, the spraying straight pipe 21 is connected to a cooling water source through a hose, and the cooling water source comprises a direct cooling water source and circulating cooling water in the circulating water storage tank 17; the second threaded shaft 22 is mounted on the side plate 18 through the third circular through hole 1802, the second threaded shaft 22 is rotatably connected with the side plate 18, a fourth gear 2201 is fixed on the second threaded shaft 22, the fourth gear 2201 is meshed with the third gear 2101, and the second threaded shaft 22 is further connected with a second motor; as shown in fig. 6, a second threaded through hole 2301 and two fourth circular through holes 2302 are formed in the surface of the sliding block 23, the second threaded through hole 2301 is in threaded fit with the second threaded shaft 22, the fourth circular through holes 2302 are in fit with the second limiting rod 1803, and a mounting cylinder 2303 is further fixed on the lower end surface of the sliding block 23; as shown in fig. 7, a straight water inlet pipe 2401 and a connecting rod 2402 are arranged on the periphery of the spray ring pipe 24, the connecting rod 2402 is matched with the mounting cylinder 2303, the spray ring pipe 24 is mounted on the sliding block 23 through the connecting rod 2402, the spray ring pipe 24 and the spray straight pipe 21 are arranged coaxially, water spray holes are uniformly formed in the inner side wall of the spray ring pipe 24 along the circumferential direction, it should be noted that the straight water inlet pipe 2401 is connected to a cooling water source through a hose, and the cooling water source includes a direct cooling water source and circulating cooling water in the circulating water storage tank 17;

the molded product 3 is placed on the carrier 19;

the working principle and the working mode of the pipe forming cooling spray device are as follows:

the first shaft rod is connected with a first motor, the first motor drives the first motor to rotate to drive a first gear 14 fixed on the first motor to rotate, the first gear 14 is meshed with a second gear 16, the two second gears 16 drive a first threaded shaft 15 to rotate, a bearing frame 19 is in threaded fit with the first threaded column 15, and the bearing frame 19 moves up and down along the axial direction under the limiting action of a first limiting rod, namely the bearing frame 19 can be controlled to move up and down by controlling the first motor;

the second threaded shaft 22 is connected with a second motor, the second motor can be a stepping motor, when the second motor drives the second threaded shaft 22 to rotate, the spray straight pipe 21 is rotated through the meshing of the third gear 2101 and the fourth gear 2201, and in the rotating process of the second threaded shaft 22, the sliding block 23 is driven to slide along the axial direction of the second threaded shaft 22, so that the spray ring pipe 24 slides along the axial direction of the second threaded shaft 22;

when the device is used, a molded product 3 enters from the side surface of the bearing device 1 and is placed on the bearing frame 19, the spraying straight pipe 21 is positioned in the molded product 3, the height of the bearing frame 19 is adjusted by controlling the first motor, so that the spraying straight pipe 21 is just positioned at the axis position of the molded product 3, the spraying straight pipe 21 rotates ceaselessly, cooling water is sprayed out from the water spraying holes and is sprayed to the periphery under the action of centrifugal force, and the inner wall of the molded product 3 is cooled; meanwhile, the cooling water connected with the spray ring pipe 24 is sprayed out from the water spray holes, and as the spray ring pipe 24 is sleeved on the molded product 3, the cooling water is sprayed to the molded product 3 from eight directions on four sides relative to the molded product 3, and the spray ring pipe 24 is driven by the sliding block 23 to move back and forth along the axial direction of the molded product 3, the spray ring pipe 24 cools the outer wall of the molded product 3 comprehensively; the spray straight pipe 21 continuously rotates to spray and cool the inner wall of the formed product 3, the spray ring pipe 24 cools the outer wall of the formed product 3 in the direction of 360 degrees, the spray straight pipe and the spray ring pipe are driven by the same motor and supplement each other to cool the formed product 3 comprehensively, so that the formed product 3 can be uniformly cooled, and the quality of the pipe is improved; in addition, the spray straight pipe 21 and the spray ring pipe 24 are connected to a cooling water source through a hose, the cooling water source comprises a direct cooling water source and circulating cooling water in the circulating water storage tank 17, the cooled water directly enters the circulating water storage tank 17 to be cooled and stored, and can be recycled again, so that the purpose of saving water resources is achieved; the specially-made pipe forming cooling spraying device is used for cooling the formed product 3, so that the cooling uniformity of the pipe can be improved, the quality of the pipe is improved, in addition, water resources can be recycled, and the purpose of saving the water resources is achieved.