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Thermoplastic elastomer used in automobile engine, having temperature resistance grade of 150 DEG C and having oxygen resistance and oil resistance and preparation method thereof

A thermoplastic elastomer, automotive engine technology, applied in the field of thermoplastic elastomer and its preparation, can solve the problems of intolerance to 150 ° C, poor ACM processing performance, poor storage stability, etc.

Inactive Publication Date: 2019-01-15
GUANGDONG RES INSTITITUTE OF PETROCHEM & FINE CHEM ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Acrylic rubber (ACM) is a kind of special rubber with saturated main chain, and the side groups are polar ester groups, so it has excellent oil resistance and high temperature resistance, and can be used for a long time under harsh conditions, but ACM has processing properties Poor, poor storage stability, needs secondary vulcanization, etc.
The ACM-based TPV material prepared by the dynamic vulcanization method can not only have the excellent performance of ACM but also have good processing performance. Problems of long-term use of automotive elastomers

Method used

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  • Thermoplastic elastomer used in automobile engine, having temperature resistance grade of 150 DEG C and having oxygen resistance and oil resistance and preparation method thereof
  • Thermoplastic elastomer used in automobile engine, having temperature resistance grade of 150 DEG C and having oxygen resistance and oil resistance and preparation method thereof
  • Thermoplastic elastomer used in automobile engine, having temperature resistance grade of 150 DEG C and having oxygen resistance and oil resistance and preparation method thereof

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Experimental program
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Effect test

preparation example Construction

[0034] The preparation method of the temperature-resistant 150°C grade oxygen-resistant and oil-resistant thermoplastic elastomer used in automobile engines is characterized in that it includes the following steps:

[0035] 1) Preparation of surface-modified loaded anti-aging agent: first dissolve the anti-aging agent in an organic solvent to obtain an anti-aging agent solution, then add halloysite nanotubes into the anti-aging agent solution, stir evenly, then vacuumize and vent into the atmosphere Circulating treatment, washing, and then dispersing the halloysite nanotubes loaded with anti-aging agent into water, adding a silane coupling agent and stirring evenly, separating the solid product, and drying to obtain a surface-modified loaded anti-aging agent;

[0036] 2) Mixing: Weigh the raw materials according to the above composition, first put the acrylate rubber, surface-modified loaded anti-aging agent, and processing aid into the internal mixer for mixing, then add carbo...

Embodiment 1

[0052] Example 1 A method for preparing a thermoplastic elastomer for internal use in an automobile engine with a temperature resistance of 150°C, oxygen resistance, and oil resistance, including:

[0053] 1) Preparation of silane-modified loaded anti-aging agent: 30.08 g of anti-aging agent MC445 was dissolved in 1 L of acetone to prepare an anti-aging agent solution with a concentration of 30 g / L. Add 60.12g HNT to the anti-aging agent solution, stir and disperse evenly, ventilate to the atmosphere after negative pressure for half an hour, repeat 3 times; filter with suction, and rinse 3 times with 75% ethanol solution to remove the anti-aging agent MC445 attached to the surface. Disperse the obtained solid in 100mL distilled water again, add 3.05g KH570, react at 60°C for 30min, centrifuge, dry and grind for later use.

[0054] 2) Mixing: Weigh 52.04g of acrylate rubber AR840, 5.87g of load-type anti-aging agent, 0.52g of stearic acid, 0.38g of VANFRE VAM and 0.43g of 935P ...

Embodiment 2

[0057] Example 2 A method for preparing a thermoplastic elastomer used in an automobile engine with a temperature resistance of 150°C, oxygen resistance, and oil resistance, including:

[0058] 1) Preparation of silane-modified loaded anti-aging agent: 30.08 g of anti-aging agent MC445 was dissolved in 1 L of acetone to prepare an anti-aging agent solution with a concentration of 30 g / L. Add 60.12g HNT to the anti-aging agent solution, stir and disperse evenly, ventilate to the atmosphere after negative pressure for half an hour, repeat 3 times; filter with suction, and rinse 3 times with 75% ethanol solution to remove the anti-aging agent MC445 attached to the surface. Disperse the obtained solid in 100mL distilled water again, add 3.05g KH570, react at 60°C for 30min, centrifuge, dry and grind for later use.

[0059] 2) Mixing: Weigh 60.24g of acrylate rubber AR51, 17.35g of load-type anti-aging agent, 0.60g of stearic acid, 0.46g of VANFRE VAM and 0.52g of 935P respectively...

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Abstract

The invention discloses a thermoplastic elastomer used in an automobile engine, having temperature resistance grade of 150 DEG C and having oxygen resistance and oil resistance and a preparation method thereof. The thermoplastic elastomer is composed of the following raw materials in parts by mass: 50-75 parts of acrylate rubber, 25-50 parts of polyamide, 10-20 parts of carbon black, 2-4 parts ofa softening plasticizer, 5-30 parts of a surface modified loaded anti-aging agent, 1-2 parts of a processing aid and 2-4 parts of a vulcanizing agent. The invention also discloses the preparation method of the thermoplastic elastomer used in the automobile engine, having temperature resistance grade of 150 DEG C and having oxygen resistance and oil resistance. A polyacrylate rubber / polyamide TPV material is prepared by a dynamic vulcanization method; the problem that a traditional anti-aging agent is easy to extract is solved by using the loaded type anti-aging agent in the material; meanwhile, the anti-aging agent is slowly released, and the TPV material which can be used in the automobile engine and has long-term high temperature resistance, oil resistance and thermo-oxidative aging resistance is obtained.

Description

technical field [0001] The invention relates to a 150°C temperature-resistant, oxygen-resistant and oil-resistant thermoplastic elastomer used in automobile engines and a preparation method thereof. Background technique [0002] With the development of automobile technology, the automobile manufacturing industry has put forward higher and higher requirements for the heat resistance and oil resistance of rubber products in the engine. The power system and axle components (especially the exhaust side of the engine) require the use temperature of rubber products to reach 135°C, the temperature in some engine compartments even requires rubber sealing products to work at 170°C for a long time. To extend the life of automotive emissions systems and powertrains, synthetic fluids (such as certain engine oils and ATF oils) are often used instead of petroleum-based oils. Therefore, more stringent requirements are put forward for the high temperature resistance and oil resistance of r...

Claims

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Application Information

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IPC IPC(8): C08L33/08C08L77/00C08K13/06C08K9/12C08K3/04C08K5/09C08K5/18
CPCC08L33/08C08L2201/08C08L2207/04C08L77/00C08K13/06C08K9/12C08K3/04C08K5/09C08K5/18
Inventor 路芳麦裕良刘洋王全勇江川霞
Owner GUANGDONG RES INSTITITUTE OF PETROCHEM & FINE CHEM ENG
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