A thermoplastic dynamic vulcanization acrylate rubber composition and its preparation method

A technology for vulcanizing acrylate and rubber composition, applied in the field of thermoplastic dynamic vulcanization acrylate rubber composition and preparation thereof, can solve problems such as easy degradation and discoloration, achieve simple processing technology, improve oil resistance and flame retardancy, and comprehensive performance excellent effect

Active Publication Date: 2020-08-28
INST OF CHEM ENG GUANGDONG ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ultra-high molecular weight polyvinyl chloride elastomer (HPVC-TPE) is based on ultra-high molecular weight polyvinyl chloride, and then compounded with stabilizers, plasticizers, tougheners, antioxidants, processing aids, fillers and colorants. The mixed system made of powder shows the characteristics of high strength, high elasticity, high toughness, wear resistance, oil resistance and corrosion resistance similar to rubber. It can replace rubber products in some application fields, but it is easy to use under high temperature conditions Degradation and discoloration

Method used

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  • A thermoplastic dynamic vulcanization acrylate rubber composition and its preparation method
  • A thermoplastic dynamic vulcanization acrylate rubber composition and its preparation method
  • A thermoplastic dynamic vulcanization acrylate rubber composition and its preparation method

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preparation example Construction

[0054] The preparation method of above-mentioned thermoplastic dynamic vulcanization acrylate rubber composition, comprises the following steps:

[0055] 1) Add ultra-high molecular weight polyvinyl chloride powder, plasticizer, filler, flame retardant, smoke suppressant, heat stabilizer, antioxidant, processing aid and lubricant into a high-speed mixer, and mix well;

[0056] 2) Transfer the material in step 1) to a low-speed mixer, then add acrylate rubber, compatibilizer, ultraviolet light stabilizer, vulcanization crosslinking agent, crosslinking accelerator and antiaging agent, and mix evenly;

[0057] 3) transfer the material in step 2) to a twin-screw extruder for melting and mixing, then transfer the material to a single-screw extruder for extruding, granulating, and cooling to obtain a thermoplastic dynamically vulcanized acrylate rubber composition.

[0058] Preferably, the rotating speed of the high-speed mixer in step 1) is 800-1800 rpm, and the mixing time is 5-30...

Embodiment 1

[0063] A kind of thermoplastic dynamically vulcanized acrylate rubber composition, its raw material composition is as shown in the following table:

[0064] Table 1 A raw material composition table of a thermoplastic dynamically vulcanized acrylate rubber composition

[0065]

[0066]

[0067] The preparation method of above-mentioned thermoplastic dynamic vulcanization acrylate rubber composition, comprises the following steps:

[0068] 1) Add ultra-high molecular weight polyvinyl chloride powder, plasticizer, filler, flame retardant, smoke suppressant, heat stabilizer, antioxidant, processing aid and lubricant into the high-speed mixer, mix and stir at 1400rpm for 10 minutes at high speed, After mixing and plasticizing to 110°C, cool until the material temperature is lower than 60°C;

[0069] 2) Transfer the material in step 1) to a low-speed mixer, then add acrylate rubber, compatibilizer, ultraviolet light stabilizer, vulcanization crosslinking agent, crosslinking a...

Embodiment 2

[0072] A kind of thermoplastic dynamically vulcanized acrylate rubber composition, its raw material composition is as shown in the following table:

[0073] Table 2 A raw material composition table of a thermoplastic dynamically vulcanized acrylate rubber composition

[0074]

[0075]

[0076] The preparation method of above-mentioned thermoplastic dynamic vulcanization acrylate rubber composition, comprises the following steps:

[0077] 1) Add ultra-high molecular weight polyvinyl chloride powder, plasticizer, filler, flame retardant, smoke suppressant, heat stabilizer, antioxidant, processing aid and lubricant into the high-speed mixer, mix and stir at 1800rpm for 20min at high speed, After mixing and plasticizing to 110°C, cool until the material temperature is lower than 60°C;

[0078] 2) Transfer the material in step 1) to a low-speed mixer, then add acrylate rubber, compatibilizer, ultraviolet light stabilizer, vulcanization crosslinking agent, crosslinking accele...

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Abstract

The invention discloses a dynamically vulcanized thermoplastic acrylate rubber composition and a preparation method thereof. The acrylate rubber composition is prepared from ultrahigh-molecular weightpolyvinyl chloride powder, acrylate rubber, compatilizer, plasticizer, filler, flame retardant, smoke suppressor, heat stabilizer, antioxidant, processing aid, lubricating agent, ultraviolet stabilizer, vulcanizing cross-linking agent, cross-linking accelerant and anti-aging agent. The preparation method is as follows: all the materials are first uniformly mixed batch by batch, a double-screw extruder and a single-screw extruder are then utilized to carry out thermodynamic vulcanization on the mixture, and thereby the final product is obtained. Since the dynamically vulcanized thermoplastic acrylate rubber composition disclosed by the invention is prepared from the ultrahigh-molecular weight polyvinyl chloride and the acrylate rubber by the thermodynamic vulcanization process, the dynamically vulcanized thermoplastic acrylate rubber composition has excellent oil resistance and high and low temperature resistance, and can be applied to fields such as oil seals for automobile engines, oil pipes and mine wires and cables.

Description

technical field [0001] The invention relates to a thermoplastic dynamically vulcanized acrylate rubber composition and a preparation method thereof. Background technique [0002] Since Coran and Patel prepared EPDM-PP thermal dynamic vulcanizate for the first time, the market demand for thermoplastic elastomer (TPE) and thermoplastic dynamic vulcanizate (TPV) has been growing continuously, and the comprehensive performance of EPDM-PP has also been continuously improved, but its oil resistance has always been Poor, has not been significantly improved. By adding oil-resistant thermoplastic elastomer containing nitrile rubber to EPDM-PP, its oil resistance can be improved, but the long-term maximum service temperature of nitrile rubber is low, about 100 ℃, and its weather resistance is poor. It is used in automobile engine oil seals, oil pipes, Fields such as mine cables are difficult to meet actual needs. [0003] Ultra-high molecular weight polyvinyl chloride (HPVC) not onl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L33/04C08L23/08C08L51/00C08K13/06C08K3/26C08K3/04C08K3/22
CPCC08K2003/2227C08K2003/265C08K2201/014C08L27/06C08L2201/02C08L2201/08C08L2205/025C08L2205/035C08L33/04C08L23/0869C08L51/003C08K13/06C08K3/26C08K3/04C08K3/2279C08K3/22C08L23/0853
Inventor 李伟浩彭小权王澜麦裕良李华亮洪仰婉刘超栋陈建良陆云
Owner INST OF CHEM ENG GUANGDONG ACAD OF SCI
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