Dynamically vulcanized thermoplastic elastomer composite material composition as well as preparation method and application thereof

A thermoplastic elastomer and composite material technology, applied in the field of thermoplastic elastomer materials, can solve the problems of high strength and low permanent deformation performance, achieve high strength and improve the effect of crosslinking uniformity

Pending Publication Date: 2022-07-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a dynamic vulcanized thermoplastic elastomer composite material composition and its preparation method and application

Method used

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  • Dynamically vulcanized thermoplastic elastomer composite material composition as well as preparation method and application thereof
  • Dynamically vulcanized thermoplastic elastomer composite material composition as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0097] Preparation of Block Polymer Composition 1:

[0098] In a 5-liter stainless steel stirred tank, under the protection of high-purity nitrogen, 2000g of cyclohexane / n-hexane mixed solvent, 265g of styrene and 0.2g of tetrahydrofurfuryl alcohol ether were added, and 2.9mmol of n-butyllithium was added at 55°C to initiate the reaction , and then carry out the first polymerization reaction for 15 min under the heating of a circulating water bath at 70 °C to complete the polymerization of styrene, and obtain a mixture containing S 1 the first polymerization system;

[0099] To the first polymerization system, 9.5 mmol of n-butyl lithium was added, followed by 115 g of styrene, and the second polymerization reaction was carried out at 70° C. for 15 min until the styrene was completely converted to obtain S 1 -S 2 and S 2 the second polymerization system;

[0100] To the second polymerization system, add 2.9 mmol n-butyllithium, then add 120 g of butadiene, and carry out th...

Embodiment 1

[0111] (1) Mix the mixture of homopolypropylene F401 and copolymer resin 1 (feeding speed is 4.1kg / h), EPDM 3072EPM (feeding speed is 2.4kg / h), paraffin oil (feeding speed is 2.4kg / h) 3.5kg / h) were added to twin-screw extruders (products of Coperion Machinery Co., Ltd., length-diameter ratio 56, screw diameter 35mm, equipped with underwater pelletizing system), at a temperature of 190 ° C and a rotation speed of 200 rpm. Blending to obtain a blended rubber, and then dicing the blended rubber underwater to obtain a blended rubber-plastic masterbatch;

[0112] (2) vulcanizing agent F40P and vulcanizing agent M75 are added in the above-mentioned blended rubber-plastic master batch to obtain mixed master batch; then mixed master batch (feeding speed is 6.5kg / h) and paraffin oil (feeding speed is 3.5 kg / h) in a twin-screw extruder, vulcanized to obtain vulcanized rubber, then the vulcanized rubber is subjected to underwater pelletizing to obtain the pellets of the dynamically vulca...

Embodiment 2-7

[0115] According to the method of Example 1, the difference is: the specific formula, processing technology and material properties are shown in Table 2.

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Abstract

The invention relates to a dynamically vulcanized thermoplastic elastomer composite material composition as well as a preparation method and application thereof. The dynamically vulcanized thermoplastic elastomer composite material composition comprises ethylene propylene diene monomer, polypropylene and a block polymerization composition in a weight ratio of (1-4): (0.8-0.97): (0.03-0.2), the third component block polymerization composition is introduced into the ethylene propylene diene monomer / polypropylene resin composite material, so that a rubber phase can be uniformly distributed in a plastic phase in a small-size manner, the third component block polymerization composition has a high-content side group structure, the crosslinking uniformity of a vulcanizing agent to the rubber phase can be improved, and the vulcanization performance of the rubber phase is improved. Therefore, the dynamically vulcanized thermoplastic elastomer composite material composition with high strength, low pressure change and excellent comprehensive performance is obtained.

Description

technical field [0001] The invention relates to the technical field of thermoplastic elastomer materials, in particular to a dynamically vulcanized thermoplastic elastomer composite material composition and a preparation method and application thereof. Background technique [0002] EPDM-based dynamic vulcanized thermoplastic elastomer material is the first type of thermoplastic elastomer to enter the market. It has good physical properties and can be processed by thermoplastic processing equipment and processes. It is widely used in household appliances, wires and cables, construction, automobiles, etc. industry. As the scope of application continues to expand, EPDM-based TPV products are gradually replacing traditional rubber as the "third-generation rubber". [0003] At present, EPDM series TPV products are mainly used in building sealing and automotive non-oil environment sealing products. EPDM series dynamic vulcanized alloys are based on EPDM rubber and polypropylene, ...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L23/12C08L53/02C08L91/06C08K5/134C08K5/526C08K13/02
CPCC08L23/16C08L2205/035C08L2205/03C08L2205/025C08L2312/00C08L23/12C08L53/02C08L91/06C08K5/1345C08K5/526C08K13/02
Inventor 姜科王超吕鹏飞徐一兵李洪真吴卫东
Owner CHINA PETROLEUM & CHEM CORP
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