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A kind of high fluidity, scratch-resistant TPV material and its preparation method and application

A high-fluidity and scratch-resistant technology, applied in the field of thermoplastic vulcanizates, can solve the problems of poor fluidity and scratch resistance, and achieve the effect of improving scratch resistance, high fluidity, and good dynamic vulcanization reaction.

Active Publication Date: 2022-04-19
KINGFA SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to overcome the defects of poor fluidity and scratch resistance described in the above prior art, the present invention provides a TPV material, which has high fluidity and good scratch resistance

Method used

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  • A kind of high fluidity, scratch-resistant TPV material and its preparation method and application
  • A kind of high fluidity, scratch-resistant TPV material and its preparation method and application
  • A kind of high fluidity, scratch-resistant TPV material and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1～14

[0063] The content of each component in the TPV materials of Examples 1-14 is shown in Table 1.

[0064] Its preparation method is:

[0065] S1. According to Table 1, mix low-melt index PP resin, high-melt index PP resin, EPDM rubber, vulcanization accelerator, antioxidant, and light stabilizer and add them to the main feed port of the twin-screw extruder. Add paraffin oil to the third screw barrel of the extruder, add vulcanizing agent to the sixth screw barrel of the twin-screw extruder, melt and mix, extrude and granulate to obtain TPV semi-finished products, wherein the screw length of the twin-screw extruder is The diameter ratio is 60:1, the screw speed is 500-650r / min, and the melting and mixing temperature is 160-200°C;

[0066] S2. Add the TPV semi-finished product, anti-scratch agent and lubricant to the twin-screw extruder after mixing, and inject water into the sixth section of the twin-screw extruder. The injection weight of water is 5-20% of the weight of the TP...

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Abstract

The invention discloses a high-fluidity, scratch-resistant TPV material, a preparation method and an application thereof. TPV material, including the following components by weight: 5-20 parts of low-melt PP resin, 10-30 parts of high-melt PP resin, 35-40 parts of EPDM rubber, 30-40 parts of paraffin oil, 0.5-1.2 parts of vulcanizing agent 0.5-1 part of vulcanization accelerator, 0.3-0.6 part of antioxidant, 0.3-0.8 part of light stabilizer, 0.2-0.5 part of lubricant, 2-5 parts of anti-scratch agent; The melt index is 230°C, ≤4g / 10min under the condition of 2.16kg, the melt index of the high-melt index PP resin is 230°C, ≥50g / 10min under the condition of 2.16kg, and the Mooney viscosity of the EPDM rubber is 55-120 , the anti-scratch agent is organosilicone grafted long-chain alkanes. In the present invention, the low-melt index PP resin, high-melt index PP resin, high-viscosity EPDM rubber, and lubricant, anti-scratch agent and other components cooperate with each other to synergistically achieve high fluidity and anti-scratch TPV Material.

Description

technical field [0001] The invention relates to the technical field of thermoplastic vulcanized rubber, and more specifically, to a high-fluidity, scratch-resistant TPV material and a preparation method and application thereof. Background technique [0002] Thermoplastic vulcanizate (TPV) refers to a polymer elastomer material prepared by dynamic vulcanization process with plastic as the continuous phase and rubber as the dispersed phase. It has excellent elasticity and strength, good processing performance and service life, and is suitable for use in automobiles. Injection molded skin material. [0003] At present, the automotive injection molding skin material solution is TPV material composed of PP and SEBS. However, the TPV material composed of PP and SEBS has the following defects: (1) Due to the lack of cross-linking points in SEBS, the cross-linking network is insufficient, and the SEBS cross-linking network is mainly physical cross-linking points and a small amount ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/16C08L91/06C08L23/12C08L51/08C08K5/14
CPCC08L23/16C08L91/06C08L2205/025C08L2205/035C08L23/12C08L51/08C08K5/14
Inventor 邱贤亮剧金星黄险波叶南飚郑明嘉安显叶林铭
Owner KINGFA SCI & TECH CO LTD
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