阅读说明：本技术 一种高韧性聚乙烯塑料管件及其制备方法 (High-toughness polyethylene plastic pipe fitting and preparation method thereof ) 是由 张玉勇 姜俊杰 张哲� 姜浩 刘磊 于 2020-04-14 设计创作，主要内容包括：本发明公开一种高韧性聚乙烯塑料管件及其制备方法,本发明通过十二烷基苯磺酸不仅可以更好促进8-羟基喹啉的溶解,可以更好的分散8-羟基喹啉及生成的8-羟基喹啉铜,减少8-羟基喹啉铜的团聚现象,提高8-羟基喹啉铜的化学活性及防霉菌性,增加制备得到的聚乙烯塑料管件的韧性；聚萘二甲酸乙二醇酯具有较低的水蒸气透过率,可以赋予聚乙烯优异的低水蒸气透过性能。根据GB/T 19810-2005,制备得到的改性聚乙烯颗粒的拉伸强度为45-50MPa,根据GB/T1037-1988,测定水蒸气透过率为0.2-0.5g/m<Sup>2</Sup>.24h.mm,解决现有技术中聚乙烯塑料管件的韧性不高同时水蒸气透过率不强的技术问题。(The invention discloses a high-toughness steel wireAccording to the polyethylene plastic pipe fitting and the preparation method thereof, the dodecyl benzene sulfonic acid can better promote the dissolution of 8-hydroxyquinoline, can better disperse the 8-hydroxyquinoline and the generated 8-hydroxyquinoline copper, reduce the agglomeration phenomenon of the 8-hydroxyquinoline copper, improve the chemical activity and the mould resistance of the 8-hydroxyquinoline copper, and increase the toughness of the prepared polyethylene plastic pipe fitting; polyethylene naphthalate has a low water vapor transmission rate and can impart excellent low water vapor transmission properties to polyethylene. The tensile strength of the prepared modified polyethylene particles is 45-50MPa according to GB/T19810-2005, and the water vapor transmission rate is 0.2-0.5g/m according to GB/T1037-1988 2 24h.mm, and solves the technical problems of low toughness and low water vapor transmission rate of the polyethylene plastic pipe fitting in the prior art.)

1. The high-toughness polyethylene plastic pipe fitting is characterized by being prepared from the following raw materials in parts by weight: 70-90 parts of polyethylene, 6-9 parts of polythiol curing agent, 1-2 parts of triphenyl phosphite, 2-4 parts of aminopropylmethyldiethoxysilane, 100 parts of 8-hydroxyquinoline, 90-103 parts of copper chloride, 26-35 parts of dodecylbenzene sulfonic acid, 7-12 parts of water, 35-55 parts of sodium carbonate, 8-17 parts of ethanol and 10-15 parts of polyethylene naphthalate;

the high-toughness polyethylene plastic pipe fitting is prepared by the following steps:

the method comprises the following steps: weighing 8-hydroxyquinoline, copper chloride, dodecylbenzene sulfonic acid, water, sodium carbonate and ethanol, adding into a reaction kettle, stirring, washing with clear water, filtering, washing with ethanol, and drying to prepare a mixture A;

step two: weighing polyethylene, a polythiol curing agent, triphenyl phosphite and aminopropyl methyl diethoxy silane, and adding the weighed materials into an internal mixer to prepare a mixture B;

step three: adding the mixture A, the mixture B and the polyethylene naphthalate into an internal mixer, then putting the mixture A, the mixture B and the polyethylene naphthalate into an extruder, carrying out vacuum cooling forming at 40 ℃ after extrusion forming to obtain a formed high-toughness polyethylene plastic pipe fitting, putting the high-toughness polyethylene plastic pipe fitting into a pipe conveying cylinder on pipe cutting equipment, pushing a movable block to move along a kidney-shaped groove on an inner wall mounting strip by a first cylinder piston rod, driving a track conveying mechanism to move by a toughness rod and a rotating rod so as to drive three track conveying mechanisms to contact with the outer wall of the high-toughness polyethylene plastic pipe fitting, driving a conveying track to rotate by a micro motor output shaft through a driving wheel, conveying the high-toughness polyethylene plastic pipe fitting by the conveying track, sequentially passing the high-toughness polyethylene plastic pipe fitting through a first pipe clamping sleeve and a second pipe clamping sleeve, driving a belt by a first motor output shaft through a belt pulley during, the belt drives the moving disc to move through the belt clamp, the moving disc moves along the horizontal rod through the rod sleeve at the bottom, the cutting position of the high-toughness polyethylene plastic pipe fitting is adjusted, the third cylinder piston rod pushes the thrust seat, the thrust seat drives the second pipe clamping sleeve to move towards the first pipe clamping sleeve, the first pipe clamping sleeve and the second pipe clamping sleeve fix the high-toughness polyethylene plastic pipe fitting, the pipe conveying cylinder stops conveying the high-toughness polyethylene plastic pipe fitting, the second cylinder piston rod drives the splash-proof shell to rotate along the mounting seat through the mounting shell, the second motor drives the cutting piece to cut the high-toughness polyethylene plastic pipe fitting through the commutator, the cut pipe fitting enters the storage box to be stored through the guide wheel, when blanking is needed, the third motor output shaft drives the driving rod to rotate through the commutator, the driving rod drives the connecting pieces at two sides to rotate, the connecting pieces drive the connecting pull rod to rotate through the positioning pins, and the connecting pull rod drives the hopper door to rotate along the shaft rod, the hopper door is opened, the cut pipe falls on the lower pipe plate and is guided out along the lower pipe plate, and the finished high-toughness polyethylene plastic pipe fitting is obtained.

2. The high-toughness polyethylene plastic pipe fitting according to claim 1, wherein the pipe fitting is prepared from the following raw materials in parts by weight: 70 parts of polyethylene, 6 parts of polythiol curing agent, 1 part of triphenyl phosphite, 2-parts of aminopropylmethyldiethoxysilane, 100 parts of 8-hydroxyquinoline, 90 parts of copper chloride, 26 parts of dodecylbenzene sulfonic acid, 7 parts of water, 35 parts of sodium carbonate, 8 parts of ethanol and 10 parts of polyethylene naphthalate.

3. The preparation method of the high-toughness polyethylene plastic pipe fitting is characterized by comprising the following steps of:

the method comprises the following steps: weighing 8-hydroxyquinoline, copper chloride, dodecylbenzene sulfonic acid, water, sodium carbonate and ethanol, adding into a reaction kettle, stirring, washing with clear water, filtering, washing with ethanol, and drying to prepare a mixture A;

step two: weighing polyethylene, a polythiol curing agent, triphenyl phosphite and aminopropyl methyl diethoxy silane, and adding the weighed materials into an internal mixer to prepare a mixture B;

step three: adding the mixture A, the mixture B and the polyethylene naphthalate into an internal mixer, then putting the mixture A, the mixture B and the polyethylene naphthalate into an extruder, carrying out vacuum cooling forming at 40 ℃ after extrusion forming to obtain a formed high-toughness polyethylene plastic pipe fitting, putting the high-toughness polyethylene plastic pipe fitting into a pipe conveying cylinder on pipe cutting equipment, pushing a movable block to move along a kidney-shaped groove on an inner wall mounting strip by a first cylinder piston rod, driving a track conveying mechanism to move by a toughness rod and a rotating rod so as to drive three track conveying mechanisms to contact with the outer wall of the high-toughness polyethylene plastic pipe fitting, driving a conveying track to rotate by a micro motor output shaft through a driving wheel, conveying the high-toughness polyethylene plastic pipe fitting by the conveying track, sequentially passing the high-toughness polyethylene plastic pipe fitting through a first pipe clamping sleeve and a second pipe clamping sleeve, driving a belt by a first motor output shaft through a belt pulley during, the belt drives the moving disc to move through the belt clamp, the moving disc moves along the horizontal rod through the rod sleeve at the bottom, the cutting position of the high-toughness polyethylene plastic pipe fitting is adjusted, the third cylinder piston rod pushes the thrust seat, the thrust seat drives the second pipe clamping sleeve to move towards the first pipe clamping sleeve, the first pipe clamping sleeve and the second pipe clamping sleeve fix the high-toughness polyethylene plastic pipe fitting, the pipe conveying cylinder stops conveying the high-toughness polyethylene plastic pipe fitting, the second cylinder piston rod drives the splash-proof shell to rotate along the mounting seat through the mounting shell, the second motor drives the cutting piece to cut the high-toughness polyethylene plastic pipe fitting through the commutator, the cut pipe fitting enters the storage box to be stored through the guide wheel, when blanking is needed, the third motor output shaft drives the driving rod to rotate through the commutator, the driving rod drives the connecting pieces at two sides to rotate, the connecting pieces drive the connecting pull rod to rotate through the positioning pins, and the connecting pull rod drives the hopper door to rotate along the shaft rod, the hopper door is opened, the cut pipe falls on the lower pipe plate and is guided out along the lower pipe plate, and the finished high-toughness polyethylene plastic pipe fitting is obtained.

4. The method for preparing the high-toughness polyethylene plastic pipe fitting according to claim 3, wherein in the second step, an internal mixer is used for mixing at the temperature of 143-240 ℃ for 0.5-1 h.

5. The method for preparing the high-toughness polyethylene plastic pipe fitting according to claim 3, wherein in the step one, a copper chloride aqueous solution with the mass fraction of 2% is added into the reaction kettle for 5 min.

6. The preparation method of the high-toughness polyethylene plastic pipe fitting according to claim 3, wherein in the step one, 10min before the stirring is finished, a 2% sodium carbonate aqueous solution is added into the reaction kettle for 5-6 times.

7. The method for preparing the high-toughness polyethylene plastic pipe fitting according to claim 3, wherein the pipe cutting equipment works as follows:

the method comprises the following steps: the high-toughness polyethylene plastic pipe fitting is put into the pipe conveying cylinder from one side of the pipe cutting equipment, the first air cylinder piston rod pushes the movable block to move along the kidney-shaped groove on the inner wall mounting strip, the toughness rod and the rotating rod drive the track conveying mechanisms to move, so that the three track conveying mechanisms are driven to contact with the outer wall of the high-toughness polyethylene plastic pipe fitting, the output shaft of the micro motor drives the conveying tracks to rotate through the driving wheels, and the conveying tracks convey the high-toughness polyethylene plastic pipe fitting;

step two: the high-toughness polyethylene plastic pipe fitting sequentially passes through the space between the first pipe clamping sleeve and the second pipe clamping sleeve and the guide wheel on the second mounting block, the output shaft of the first motor drives the belt to transmit through the belt pulley during cutting, the belt drives the movable disc to move through the belt clamp, the movable disc moves along the horizontal rod through the rod sleeve at the bottom, the cutting position of the high-toughness polyethylene plastic pipe fitting is adjusted, the third cylinder piston rod pushes the thrust seat, the thrust seat drives the second pipe clamping sleeve to move towards the first pipe clamping sleeve, the first pipe clamping sleeve and the second pipe clamping sleeve fix the high-toughness polyethylene plastic pipe fitting, the pipe conveying cylinder stops conveying the high-toughness polyethylene plastic pipe fitting, a piston rod of a second air cylinder drives the splash-proof shell to rotate along the mounting seat through the mounting shell, a second motor drives the cutting piece to cut the high-toughness polyethylene plastic pipe fitting through the commutator, and the cut pipe enters the storage box to be stored through the guide of the guide wheel;

step three: when the blanking is needed, the output shaft of the third motor drives the driving rod to rotate through the commutator, the driving rod drives the connecting pieces on two sides to rotate, the connecting pieces drive the connecting pull rods to rotate through the positioning pins, the connecting pull rods drive the hopper door to rotate along the shaft rod, the hopper door is opened, the cut pipes fall on the lower pipe plate and are guided out along the lower pipe plate, and the finished high-toughness polyethylene plastic pipe fitting is obtained.

Technical Field

The invention relates to the technical field of preparation of polyethylene plastic pipes, and particularly relates to a high-toughness polyethylene plastic pipe fitting and a preparation method thereof.

Background

Polyethylene pipe is commonly called PE pipe, and the known PE pipe is generally formed by high-temperature injection molding of high polymer such as polyethylene, polypropylene and the like serving as raw materials through an injection molding machine.

But current polyethylene pipe toughness is not high, leads to intensity not enough, the cracked condition appears easily in the use, and prior art needs operating personnel to carry the polyethylene pipe when polyethylene pipe cutting simultaneously, and whole cutting equipment's degree of automation is not high, and tubular product is cut the position back simultaneously, is difficult for carrying out the precision adjustment of cutting the position, and cutting equipment can not carry out quantitative calandria to the polyethylene pipe after the cutting.

Disclosure of Invention

The invention aims to provide a high-toughness polyethylene plastic pipe fitting and a preparation method thereof, and solves the following technical problems: (1) the dodecyl benzene sulfonic acid can better promote the dissolution of 8-hydroxyquinoline, has higher viscosity, can better disperse the 8-hydroxyquinoline and the generated 8-hydroxyquinoline copper, reduces the agglomeration phenomenon of the 8-hydroxyquinoline copper, improves the chemical activity and the mould resistance of the 8-hydroxyquinoline copper, and increases the toughness of the prepared polyethylene plastic pipe fitting; poly(s) are polymerizedThe polyethylene naphthalate has a low water vapor permeability and can impart excellent low water vapor permeability to polyethylene. The tensile strength of the modified polyethylene particles prepared according to GB/T19810-2005 is 45-50MPa, and the water vapor transmission rate is measured according to GB/T1037-1988 to be 0.2-0.5g/m²24h.mm, solving the technical problems of low toughness and low water vapor transmission rate of the polyethylene plastic pipe fitting in the prior art; (2) the high-toughness polyethylene plastic pipe fitting is put into the pipe conveying cylinder from one side of the pipe cutting equipment, the first air cylinder piston rod pushes the movable block to move along the kidney-shaped groove on the inner wall mounting strip, the toughness rod and the rotating rod drive the track conveying mechanisms to move so as to drive the three track conveying mechanisms to contact with the outer wall of the high-toughness polyethylene plastic pipe fitting, the output shaft of the micro motor drives the conveying tracks to rotate through the driving wheels, and the conveying tracks convey the high-toughness polyethylene plastic pipe fitting, so that the technical problems that the plastic pipe fitting needs to be conveyed manually during cutting and the automation degree is low in the prior art are solved; (3) when the high-toughness polyethylene plastic pipe fitting sequentially passes through the space between the first pipe clamping sleeve and the second pipe clamping sleeve and the guide wheel on the second mounting block, a belt is driven by a first motor output shaft through a belt pulley to drive the belt to be driven by the belt through a belt clamp, the movable disc is driven by the belt clamp to move along the horizontal rod through the rod sleeve at the bottom, the cutting position of the high-toughness polyethylene plastic pipe fitting is adjusted, the third cylinder piston rod pushes the thrust seat, the thrust seat drives the second pipe clamping sleeve to move towards the first pipe clamping sleeve, the first pipe clamping sleeve and the second pipe clamping sleeve fix the high-toughness polyethylene plastic pipe fitting, the pipe conveying cylinder stops conveying the high-toughness polyethylene plastic pipe fitting, the second cylinder piston rod drives the splash-proof shell to rotate along the mounting seat through the mounting shell, the second motor drives the cutting piece to cut the high-toughness polyethylene plastic pipe fitting through the commutator, and the cut pipe fitting enters the pipe storage box to be stored through the guide wheel, through the structure setting, before the pipe is cut by the pipe cutting equipment, the cutting position can be adjusted, meanwhile, the plastic pipe is fixed when the plastic pipe is cut through the first pipe clamping sleeve and the second pipe clamping sleeve, and the problem that the cutting position is difficult to adjust after the pipe is conveyed to the cutting position in the prior art is solvedThe technical problem of integration; (4) drive the actuating lever through the commutator through the third motor output shaft and rotate, the actuating lever drives the connection piece of both sides and rotates, and the connection piece drives through the locating pin and connects the pull rod rotation, connects the pull rod and drives the fill door and rotate along the axostylus axostyle, opens the fill door, and the tubular product whereabouts after the cutting is on lower tube sheet to guide along lower tube sheet and derive, obtain finished product high tenacity polyethylene plastic pipe spare, can not carry out quantitative calandria's technical problem after solving among the prior art plastic pipe spare cutting.

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

a high-toughness polyethylene plastic pipe fitting is prepared from the following raw materials in parts by weight: 70-90 parts of polyethylene, 6-9 parts of polythiol curing agent, 1-2 parts of triphenyl phosphite, 2-4 parts of aminopropylmethyldiethoxysilane, 100 parts of 8-hydroxyquinoline, 90-103 parts of copper chloride, 26-35 parts of dodecylbenzene sulfonic acid, 7-12 parts of water, 35-55 parts of sodium carbonate, 8-17 parts of ethanol and 10-15 parts of polyethylene naphthalate;

the high-toughness polyethylene plastic pipe fitting is prepared by the following steps:

the method comprises the following steps: weighing 8-hydroxyquinoline, copper chloride, dodecylbenzene sulfonic acid, water, sodium carbonate and ethanol, adding into a reaction kettle, stirring, washing with clear water, filtering, washing with ethanol, and drying to prepare a mixture A;

step two: weighing polyethylene, a polythiol curing agent, triphenyl phosphite and aminopropyl methyl diethoxy silane, and adding the weighed materials into an internal mixer to prepare a mixture B;

step three: adding the mixture A, the mixture B and the polyethylene naphthalate into an internal mixer, then putting the mixture into an extruder, carrying out vacuum cooling forming at 40 ℃ after extrusion forming to obtain a formed high-toughness polyethylene plastic pipe fitting, putting the high-toughness polyethylene plastic pipe fitting into the internal mixer from one side of a pipe conveying cylinder on pipe cutting equipment, pushing a movable block to move along a kidney-shaped groove on an inner wall mounting strip by a first cylinder piston rod, driving a track conveying mechanism to move by a toughness rod and a rotating rod, further driving three track conveying mechanisms to contact with the outer wall of the high-toughness polyethylene plastic pipe fitting, driving a conveying track to rotate by a micro motor output shaft through a driving wheel, and conveying the high-toughness polyethylene plastic pipe fitting by the conveying track.

Further, the feed additive is prepared from the following raw materials in parts by weight: 70 parts of polyethylene, 6 parts of polythiol curing agent, 1 part of triphenyl phosphite, 2-parts of aminopropylmethyldiethoxysilane, 100 parts of 8-hydroxyquinoline, 90 parts of copper chloride, 26 parts of dodecylbenzene sulfonic acid, 7 parts of water, 35 parts of sodium carbonate, 8 parts of ethanol and 10 parts of polyethylene naphthalate.

Further, in the second step, an internal mixer is used for mixing at 143-240 ℃ for 0.5-1 h.

Further, in the step one, a copper chloride aqueous solution with the mass fraction of 2% is added into the reaction kettle for 5 min.

Further, 10min before the stirring in the first step is finished, adding a sodium carbonate aqueous solution with the mass fraction of 2% into the reaction kettle, and adding the sodium carbonate into the reaction kettle for 5-6 times.

The invention has the beneficial effects that:

(1) according to the high-toughness polyethylene plastic pipe fitting and the preparation method thereof, the dodecyl benzene sulfonic acid can better promote the dissolution of 8-hydroxyquinoline, has higher viscosity, can better disperse the 8-hydroxyquinoline and the generated 8-hydroxyquinoline copper, reduces the agglomeration phenomenon of the 8-hydroxyquinoline copper, improves the chemical activity and mould resistance of the 8-hydroxyquinoline copper, and increases the toughness of the prepared polyethylene plastic pipe fitting; polyethylene naphthalate has a low water vapor transmission rate and can impart excellent low water vapor transmission properties to polyethylene. The tensile strength of the modified polyethylene particles prepared according to GB/T19810-2005 is 45-50MPa, and the water vapor transmission rate is measured according to GB/T1037-1988 to be 0.2-0.5g/m².24h.mm；

(2) The high-toughness polyethylene plastic pipe fitting is placed from one side of a pipe conveying cylinder on the pipe cutting equipment, a first air cylinder piston rod pushes a movable block to move along a kidney-shaped groove on an inner wall mounting strip, a toughness rod and a rotating rod drive a track conveying mechanism to move so as to drive three track conveying mechanisms to contact the outer wall of the high-toughness polyethylene plastic pipe fitting, a micro motor output shaft drives a conveying track to rotate through a driving wheel, the conveying track conveys the high-toughness polyethylene plastic pipe fitting, and through the structural arrangement, the pipe cutting equipment can convey the plastic pipe fittings with different pipe diameters, the conveying process is automatic, and operators do not need to participate;

(3) the high-toughness polyethylene plastic pipe fitting sequentially passes through the space between the first pipe clamping sleeve and the second pipe clamping sleeve, and the guide wheel on the second mounting block, when in cutting, the output shaft of the first motor drives the belt to transmit through the belt pulley, the belt drives the movable disc to move through the belt clamp, the movable disc moves along the horizontal rod through the rod sleeve at the bottom, the cutting position of the high-toughness polyethylene plastic pipe fitting is adjusted, the piston rod of the third air cylinder pushes the thrust seat, the thrust seat drives the second pipe clamping sleeve to move towards the first pipe clamping sleeve, then the first pipe clamping sleeve and the second pipe clamping sleeve fix the high-toughness polyethylene plastic pipe fitting, the pipe conveying cylinder stops conveying the high-toughness polyethylene plastic pipe fitting, the piston rod of the second air cylinder drives the splash-proof shell to rotate along the mounting seat through the mounting shell, the second motor drives the cutting piece to cut the high-toughness polyethylene plastic pipe fitting through the commutator, and the cut pipe fitting enters the pipe fitting storage box to be, through the structure arrangement, the cutting position can be adjusted before the pipe cutting equipment cuts the pipe, and meanwhile, the plastic pipe is conveniently fixed during cutting through the design of the first pipe clamping sleeve and the second pipe clamping sleeve;

(4) when needs unloading, the third motor output shaft passes through the commutator and drives the actuating lever rotation, the actuating lever drives the connection piece rotation of both sides, the connection piece passes through the locating pin and drives the connection pull rod rotation, it drives the sluice gate and rotates along the axostylus axostyle to connect the pull rod, open the sluice gate, tubular product whereabouts after the cutting is on tube sheet down, and guide out along tube sheet down, obtain finished product high tenacity polyethylene plastic pipe fitting, through above structure setting, make this tubular product cutting equipment can save the tubular product after the cutting, can discharge tubular product according to the demand ration simultaneously, therefore, the clothes hanger is strong in practicability.

Drawings

The invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic structural view of the pipe cutting apparatus of the present invention;

FIG. 2 is a schematic structural view of a right-angle stand according to the present invention;

FIG. 3 is a schematic view of a second mounting block of the present invention;

FIG. 4 is a schematic view of the structure of the storage tank of the present invention;

FIG. 5 is a schematic view of the installation of the track conveyor of the present invention;

FIG. 6 is a block diagram of the track conveyor of the present invention;

FIG. 7 is a bottom view of the moving plate of the present invention;

fig. 8 is a schematic view of the structure of the cutting blade of the present invention.

In the figure: 1. a frame body; 2. a support block; 3. a first mounting block; 4. a pipe conveying pipe barrel; 5. a movable tray; 51. a first motor; 52. a belt clip; 6. a storage tank; 7. a lower tube plate; 8. mounting a strip on the inner wall; 9. a first cylinder; 10. a movable block; 11. a ductile rod; 12. rotating the rod; 13. a crawler belt conveying mechanism; 131. a micro motor; 132. a side plate; 133. a rotating wheel; 134. a conveying crawler belt; 135. a drive wheel; 14. a rod seat; 141. a horizontal bar; 15. a second cylinder; 151. mounting a shell; 153. a second motor; 154. a splash-proof housing; 155. cutting the slices; 16. a mounting seat; 17. a right-angle frame; 18. a third cylinder; 19. a first pipe clamping sleeve; 20. a second jacket pipe sleeve; 21. a thrust seat; 22. a second mounting block; 221. a guide wheel; 23. a fixed seat; 24. a third motor; 25. a drive rod; 26. connecting sheets; 261. positioning pins; 27. connecting a pull rod; 28. a hopper door; 29. positioning seats; 30. a shaft rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious 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.

Please refer to fig. 1-8