阅读说明：本技术 Pvc片材耐热改性剂acr (PVC sheet heat-resistant modifier ACR ) 是由 吴瑞滨 董涛 张庆涛 沈阳 王正亮 陈桂鑫 于 2021-02-05 设计创作，主要内容包括：本发明提供PVC片材耐热改性剂ACR,涉及改性剂生产技术领域。该PVC片材耐热改性剂ACR,包括如下材料,按下述配方称取各重量份原料：苯乙烯35份、丙烯腈47份、甲基丙烯酸酯类40份、α-甲基苯乙烯20份、甲基丙烯酸缩水甘油酯30份,通过将苯乙烯、丙烯腈、甲基丙烯酸酯类、α-甲基苯乙烯和甲基丙烯酸缩水甘油酯共聚得到PVC片材耐热改性剂ACR,苯乙烯、丙烯腈、甲基丙烯酸酯类、α-甲基苯乙烯和甲基丙烯酸缩水甘油酯共聚反应设备为防泄漏反应设备。本发明可以使得PVC片材的改性剂ACR耐热性良好,且在聚合反应时反应设备更加的安全,不会造成易燃有害物泄漏。(The invention provides a PVC sheet heat-resistant modifier ACR, and relates to the technical field of modifier production. The heat-resistant modifier ACR for the PVC sheet comprises the following materials, and is prepared by weighing the following raw materials in parts by weight according to the following formula: the PVC sheet material heat-resistant modifier ACR is obtained by copolymerizing styrene, acrylonitrile, methacrylate, alpha-methyl styrene and glycidyl methacrylate, wherein the copolymerization reaction equipment of the styrene, the acrylonitrile, the methacrylate, the alpha-methyl styrene and the glycidyl methacrylate is leakage-proof reaction equipment. The invention can ensure that the modifier ACR of the PVC sheet has good heat resistance, and the reaction equipment is safer during polymerization reaction, thereby avoiding the leakage of inflammable harmful substances.)

The heat-resistant modifier ACR for the PVC sheet is characterized by comprising the following raw materials in parts by weight according to the following formula: 35-55 parts of styrene, 47-68 parts of acrylonitrile, 40-55 parts of methacrylate, 20-30 parts of alpha-methyl styrene and 30-35 parts of glycidyl methacrylate, wherein the PVC sheet heat-resistant modifier ACR is obtained by copolymerizing styrene, acrylonitrile, methacrylate, alpha-methyl styrene and glycidyl methacrylate, and the copolymerization reaction equipment of styrene, acrylonitrile, methacrylate, alpha-methyl styrene and glycidyl methacrylate is leakage-proof reaction equipment.

2. The heat-resistant modifier ACR for PVC sheets according to claim 1, wherein the copolymerization pressure of styrene, acrylonitrile, methacrylate, alpha-methyl styrene and glycidyl methacrylate is normal pressure, and the copolymerization temperature is 75-85 ℃.

3. The heat-resistant modifier ACR for PVC sheets according to claim 1, characterized in that the glycidyl methacrylate is synthesized by phase transfer method: firstly, methacrylic acid and sodium hydroxide or sodium carbonate are subjected to acid-base neutralization reaction in an organic solvent to prepare sodium methacrylate, the sodium methacrylate is dried and then reacts with epoxy chloropropane in the presence of a phase transfer catalyst, and the glycidyl methacrylate is obtained after the dehydration, the reaction at eighty ℃ and the reduced pressure distillation and the washing.

4. The heat-resistant modifier ACR for PVC sheets according to claim 1, wherein the leak-proof reaction equipment comprises a reaction tank (1), a quantitative adding block (2) is fixedly connected to the upper surface of the reaction tank (1) in a penetrating manner, a collecting pipe (3) is fixedly connected to the upper surface of the quantitative adding block (2) in a penetrating manner, a plurality of uniformly distributed feeding pipes (4) are connected to the outer wall of the collecting pipe (3), a feeding hole (13) is formed in the central position of the upper surface of the quantitative adding block (2), and a rotating block (14) is rotationally connected to the quantitative adding block (2).

5. The heat-resistant modifier ACR for PVC sheets according to claim 4, wherein the outer wall of the rotating block (14) is provided with a plurality of material transferring holes (12), the central position of the lower surface of the quantitative adding block (2) is provided with a material discharging hole (11) in a penetrating manner, and the material transferring holes (12), the material discharging hole (11) and the material feeding hole (13) have the same diameter.

6. The heat-resistant modifier ACR for PVC sheets as claimed in claim 4, wherein the supporting legs (6) are fixedly connected to four corner positions of the lower surface of the reaction tank (1), the supporting frame (8) is fixedly connected to the central position of the lower surface of the reaction tank (1), the first motor (7) is fixedly connected to the supporting frame (8) in a penetrating manner, the rotating shaft (5) is fixedly connected to the driving end of the first motor (7), and one end of the rotating shaft (5) far away from the first motor (7) is rotatably connected to the central position of the lower surface of the reaction tank (1) in a penetrating manner.

7. The heat-resistant modifier ACR for PVC sheets as claimed in claim 6, wherein the stirring rod (15) is fixedly connected to the outer wall of the rotating shaft (5) at the inner part of the reaction tank (1), and a discharge hole is fixedly connected to the outer wall of the reaction tank (1) near the bottom.

8. The heat-resistant modifier ACR for PVC sheets according to claim 4 is characterized in that a supporting plate (10) is fixedly connected to any side wall of the quantitative adding block (2), a second motor (9) is fixedly connected to the upper surface of the supporting plate (10), and the driving end of the second motor (9) penetrates through the quantitative adding block (2) and is fixedly connected with the central rotating shaft of the rotating block (14).

Technical Field

The invention relates to the technical field of modifier production, in particular to a heat-resistant modifier ACR for a PVC sheet.

Background

The PVC board is a plate with a honeycomb-shaped mesh structure in cross section and made of PVC as a raw material, and is a vacuum plastic-absorbing film. The film is used for surface layer packaging of various panels, is also called as a decorative film and an adhesive film, and is applied to various industries such as building materials, packaging, medicines and the like. The building material industry accounts for 60% of the maximum proportion, the packaging industry is the second one, and other industries with small application range are also provided. The PVC processing modifier ACR belongs to a core-shell copolymer, the shell of the PVC processing modifier ACR is a methacrylate copolymer, and the core of the PVC processing modifier ACR is an acrylate copolymer. The basic function of the impact-resistant acrylic acid is to improve the impact resistance of the PVC product, meet the requirement of engineering plastics on impact strength and simultaneously improve the light stability of the PVC product.

In the prior art, the modifier ACR has poor heat resistance, and during copolymerization, the reaction tank is easy to explode in a high-pressure environment, and harmful and inflammable substances are easy to leak at a feeding position, so that potential safety hazards exist.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a heat-resistant modifier ACR for a PVC sheet, and solves the problems of poor heat resistance of the modifier ACR and potential safety hazard of reaction equipment.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: the heat-resistant modifier ACR for the PVC sheet comprises the following materials, and is prepared by weighing the following raw materials in parts by weight according to the following formula: 35-55 parts of styrene, 47-68 parts of acrylonitrile, 40-55 parts of methacrylate, 20-30 parts of alpha-methyl styrene and 30-35 parts of glycidyl methacrylate, wherein the PVC sheet heat-resistant modifier ACR is obtained by copolymerizing styrene, acrylonitrile, methacrylate, alpha-methyl styrene and glycidyl methacrylate, and the copolymerization reaction equipment of styrene, acrylonitrile, methacrylate, alpha-methyl styrene and glycidyl methacrylate is leakage-proof reaction equipment.

Preferably, the copolymerization pressure of the styrene, the acrylonitrile, the methacrylate, the alpha-methyl styrene and the glycidyl methacrylate is normal pressure, and the copolymerization temperature is 75-85 ℃.

Preferably, the glycidyl methacrylate is synthesized by a phase transfer method, and the synthesis method comprises the following steps: firstly, methacrylic acid and sodium hydroxide or sodium carbonate are subjected to acid-base neutralization reaction in an organic solvent to prepare sodium methacrylate, the sodium methacrylate is dried and then reacts with epoxy chloropropane in the presence of a phase transfer catalyst, and the glycidyl methacrylate is obtained after the dehydration, the reaction at eighty ℃ and the reduced pressure distillation and the washing.

Preferably, prevent leaking response device and include the retort, retort upper surface position runs through fixedly connected with ration and adds the piece, the ration is added a upper surface position and runs through fixedly connected with manifold, the manifold outer wall position is connected with a plurality of evenly distributed's filling tube, ration is added a upper surface central point and is put and has been seted up the pan feeding hole, it is connected with the turning block to rotate in the piece to add the ration.

Preferably, the outer wall of the rotating block is provided with a plurality of material rotating holes, the center of the lower surface of the quantitative adding block is provided with a material discharging hole in a penetrating mode, and the diameters of the material rotating holes, the material discharging holes and the material feeding holes are consistent.

Preferably, four corner positions of retort lower surface all fixedly connected with supporting legs, retort lower surface central point puts fixedly connected with support frame, the first motor of fixedly connected with runs through in the support frame position, first motor drive end fixedly connected with axis of rotation, first motor one end is kept away from in the axis of rotation and retort lower surface central point puts and runs through the rotation and is connected.

Preferably, the axis of rotation is located inside branch position outer wall fixedly connected with puddler of reaction tank, the reaction tank outer wall is close to bottom position and runs through fixedly connected with relief hole.

Preferably, the side wall of any side of the quantitative adding block is fixedly connected with a supporting plate, the upper surface of the supporting plate is fixedly connected with a second motor, and a driving end of the second motor penetrates through the quantitative adding block and is fixedly connected with a central rotating shaft of the rotating block.

The working principle is as follows: through annotating into the material hole 12 that changes in quantitative interpolation piece 2 with reaction raw materials through filling tube 4 and collecting tube 3, restart second motor 9, make second motor 9 drive turning block 14 with reaction raw materials change into retort 1 in, carry out the set reaction, restart first motor 7, make first motor 7 drive axis of rotation 5 and rotate, make puddler 15 rotate, stir raw materials, make the charge door can not cause harmful inflammable gas to give off because retort 1 communicates with the external world when reinforced, safety relatively.

(III) advantageous effects

The invention provides a PVC sheet heat-resistant modifier ACR. The method has the following beneficial effects:

1. according to the invention, through arranging the anti-leakage reaction equipment, reaction raw materials are injected into the material transferring hole of the rotating block of the quantitative adding block through the feeding pipe and the collecting pipe, the second motor is started again, so that the second motor drives the rotating block to transfer the reaction raw materials into the reaction tank for collective reaction, and the first motor is started again, so that the first motor drives the rotating shaft to rotate, the stirring rod 1 is rotated, the raw materials are stirred, and the feeding port can not cause the communication between the reaction tank and the outside to cause the emission of harmful still gas during feeding, so that the safety is high.

2. According to the invention, the alpha-methyl styrene and the glycidyl methacrylate are arranged, so that the eighty-degree-centigrade resistance of the product is obviously improved, and the heat-resistant processing aid can improve the heat deformation temperature of PVC, ABS and other plastic products.

Drawings

FIG. 1 is a front view of a leakproof reaction apparatus for a heat resistance modifier ACR of a PVC sheet material;

FIG. 2 is a cross-sectional view of a leakproof reaction apparatus for the heat resistance modifier ACR of the PVC sheet material of the present invention;

FIG. 3 is a schematic diagram of the synthesis of heat-resistant modifier ACR of PVC sheet material by glycidyl methacrylate esterification ring-closing method.

Wherein, 1, a reaction tank; 2. quantitatively adding blocks; 3. a manifold; 4. a feed tube; 5. a rotating shaft; 6. supporting legs; 7. a first motor; 8. a support frame; 9. a second motor; 10. a support plate; 11. a discharge hole; 12. a material transferring hole; 13. a feeding hole; 14. rotating the block; 15. a stirring 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.

The first embodiment is as follows:

as shown in fig. 1 to 3, an embodiment of the present invention provides a heat resistance modifier ACR for PVC sheets, which comprises the following materials, and the following raw materials are weighed according to the following formula: the PVC sheet material heat-resistant modifier ACR is obtained by copolymerizing styrene, acrylonitrile, methacrylate, alpha-methyl styrene and glycidyl methacrylate, wherein the copolymerization reaction equipment of the styrene, the acrylonitrile, the methacrylate, the alpha-methyl styrene and the glycidyl methacrylate is leakage-proof reaction equipment.

The copolymerization pressure of styrene, acrylonitrile, methacrylate, alpha-methyl styrene and glycidyl methacrylate is normal pressure, and the copolymerization temperature is 75 ℃. Glycidyl methacrylate is synthesized by a phase transfer method, and the synthesis method comprises the following steps: firstly, methacrylic acid and sodium hydroxide or sodium carbonate are subjected to acid-base neutralization reaction in an organic solvent to prepare sodium methacrylate, the sodium methacrylate is dried and then reacts with epoxy chloropropane in the presence of a phase transfer catalyst, and the glycidyl methacrylate is obtained after the dehydration, the reaction at eighty ℃ and the reduced pressure distillation and the washing.

Prevent leaking response device includes retort 1, and 1 upper surface position of retort runs through fixedly connected with ration and adds piece 2, and the ration is added 2 upper surface positions of piece and runs through fixedly connected with manifold 3, and 3 outer wall positions of manifold are connected with a plurality of evenly distributed's filling tube 4, and the ration is added 2 upper surface central points of piece and is put and has been seted up pan feeding hole 13, and the ration is added 2 internal rotations of piece and is connected with turning block 14. A plurality of material holes 12 that change have been seted up to the turning block 14 outer wall, and the ration is added 2 lower surface central points and is put and run through and have been seted up discharge opening 11, and the diameter of changeing material hole 12, discharge opening 11 and pan feeding hole 13 is unanimous, makes things convenient for the raw materials to pass through turning block 14 and indirectly adds to retort 1 in, avoids harmful gas to leak.

Four equal fixedly connected with supporting legs 6 in turning position of retort 1 lower surface, 1 lower surface central point of retort puts fixedly connected with support frame 8, and the first motor 7 of fixedly connected with is run through to support frame 8 position, and first motor 7 drive end fixedly connected with axis of rotation 5, and axis of rotation 5 are kept away from 7 one end of first motor and are put to run through to rotate with 1 lower surface central point of retort and be connected. The axis of rotation 5 is located 1 internal part position outer wall fixedly connected with puddler 15 of retort, and 1 outer wall of retort is close to bottom position and runs through fixedly connected with relief hole. The lateral wall position fixedly connected with backup pad 10 of 2 arbitrary sides of quantitative interpolation piece, surface position fixedly connected with second motor 9 on backup pad 10, second motor 9 drive end runs through quantitative interpolation piece 2 and 14 central axis of rotation fixed connections of turning block, drives turning block 14 through second motor 9 and rotates.

Example two:

the glycidyl methacrylate is synthesized by an esterification closed-loop method, and methacrylic acid and epoxy chloropropane are subjected to ring-opening esterification reaction to generate methacrylic acid-2-hydroxy-3-chloropropyl ester. Then carrying out dehydrochlorination ring closure reaction on the methacrylic acid-2-hydroxy-3-chloropropyl ester in the presence of sodium hydroxide solid or aqueous solution, or carrying out reflux in acetone solution of potassium carbonate to obtain the product.

Example three:

weighing the following raw materials in parts by weight: 37 parts of styrene, 49 parts of acrylonitrile, 42 parts of methacrylate, 25 parts of alpha-methyl styrene and 33 parts of glycidyl methacrylate.

The copolymerization pressure of the styrene, the acrylonitrile, the methacrylate, the alpha-methyl styrene and the glycidyl methacrylate is normal pressure, and the copolymerization temperature is 77 ℃.

Example four:

weighing the following raw materials in parts by weight: 55 parts of styrene, 68 parts of acrylonitrile, 55 parts of methacrylate, 30 parts of alpha-methyl styrene and 35 parts of glycidyl methacrylate.

The copolymerization pressure of the styrene, the acrylonitrile, the methacrylate, the alpha-methyl styrene and the glycidyl methacrylate is normal pressure, and the copolymerization temperature is 82 ℃.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.