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Modified ethylene propylene rubber and preparation method thereof

An ethylene-propylene rubber and modification technology, applied in the rubber field, can solve the problems of poor compatibility and poor mutual viscosity, and achieve the effect of improving physical properties, reducing surface tension and obvious effect.

Active Publication Date: 2015-06-03
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems of the existing ethylene-propylene rubber with poor self-adhesiveness, poor mutual adhesion and poor compatibility with other materials, the present invention provides a modified ethylene-propylene rubber with good self-adhesiveness, good mutual adhesion and good compatibility with other materials. Propylene rubber and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0046] The present invention also provides a method for preparing modified ethylene-propylene rubber, the method comprising the following steps:

[0047] S1. Add ethylene-propylene rubber and modified polyoctene polymer into the internal mixer, masticate and deglue to obtain a blended masterbatch;

[0048] S2. Add the masterbatch, active agent, reinforcing agent, filler, anti-aging agent, and plasticizer into the internal mixer, and mix to obtain the rubber compound;

[0049] S3, mixing the rubber compound, the vulcanizing agent and the vulcanization accelerator on the open mill, and the modified ethylene-propylene rubber is obtained after the sheet is released;

[0050] Among them, 70-100 parts by weight of ethylene-propylene rubber, 1-30 parts by weight of modified polyoctene polymer, 5-10 parts by weight of active agent, 5-100 parts by weight of reinforcing agent, 5-100 parts by weight of filler, 1-50 parts by weight of plasticizer, 1-5 parts by weight of antioxidant, 3-5 ...

Embodiment 1

[0066] 1. Preparation of modified polyoctene

[0067] (1) Put 100 parts by weight of polyoctene into a glass container in an oven at 125°C, heat to melt, and place for 20 minutes.

[0068] (2) Put 1.5 parts by weight of N,N-m-phenylene bismaleimide and 1 part by weight of bis(1,5-pentylene)thiuram tetrasulfide into molten polyoctene, and use Stir with a glass rod until it is difficult to stir, put the polyoctene mixture with modifier into the oven again, and let it stand for 20 minutes. Stir with a glass rod again until it is difficult to stir, repeat this cycle 4 times, and at the same time put the mixer Raise the temperature to about 80°C, take out the molten mixture, put it on the prepared open mill for thin pass 3 times, triangular bag 3 times, and the modified polyoctene is obtained.

[0069] 2. Preparation of ethylene propylene rubber

[0070] (1) Put ethylene-propylene rubber (EPDM-778) and modified polyoctene polymer (modified 8012) into the internal mixer, masticate...

Embodiment 2-3

[0081] The mixing materials A2-A3 and ethylene-propylene rubber B2-B3 were prepared according to the method of Example 1, the difference being that the content of each component is shown in Table 1.

[0082] Table 1

[0083] .

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PUM

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Abstract

The invention provides a modified ethylene propylene rubber. The modified ethylene propylene rubber comprises, by weight, 70-100 parts of ethylene propylene rubber, 130 parts of a modified polyoctene polymer, 6-13 parts of an activator, 5-100 parts of a strengthening agent, 5-100 parts of a filler, 0-50 parts of a plasticizer, 1-5 parts of an antioxidant, 3-5 parts of a processing assistant, 0.3-5 parts of a vulcanizing agent, and 1-5 parts of a vulcanizing promoter. The invention also provides a preparation method of the modified ethylene propylene rubber. The modified ethylene propylene rubber has a very good extension effect, can well improve the autoadhesion and the mutual viscosity of the ethylene propylene rubber, has an obvious non-polar liquid resistance, has an obvious effect in the modification of other polar rubbers, and well realizes the performance complementation of polar rubber and the non-polar rubber.

Description

technical field [0001] The invention belongs to the field of rubber, in particular to a modified ethylene-propylene rubber and a preparation method thereof. Background technique [0002] With the rapid development of the automobile industry and the continuous improvement of vehicle performance, higher technical requirements are put forward for rubber hoses used in automobiles. Ethylene-propylene rubber has the characteristics of heat resistance, aging resistance and corrosion resistance, and is a commonly used rubber hose material. [0003] Ethylene-propylene rubber is a copolymer of ethylene and propylene. The molecular chain is an extremely saturated straight-chain linear structure. Since the polymerized units of ethylene and propylene are randomly arranged in the molecular chain, it breaks the original structure of polyethylene and polypropylene polymers. The regularity of some molecular arrangements reduces the original regular orientation crystallization properties of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/20C08L23/16C08L9/02C08K13/02
CPCC08K2201/003C08L23/16C08L2205/035C08L23/20C08L91/06C08L71/02C08K13/02C08K2003/2296C08K3/04C08K2003/265C08K3/06C08L9/02C08K3/36C08K2003/222
Inventor 宫建坤林志文侯振宇
Owner BYD CO LTD
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