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A kind of rubber formula and preparation method thereof

A technology of rubber and tetrapropylene fluorine rubber, which is applied in the field of rubber formulation and its preparation, can solve the problems of damage, inability to meet new fuel resistance and high temperature resistance, and achieve good high temperature resistance and good elasticity

Active Publication Date: 2014-10-01
芜湖禾田汽车工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the current fuel is also changing. A variety of component additives are added to the fuel. These additives will damage the engine crankshaft oil seal made of silicone rubber at a temperature of 150°C-200°C. Therefore, the engine crankshaft oil seal made of silicone rubber Can no longer meet the requirements of new fuel resistance and high temperature resistance

Method used

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  • A kind of rubber formula and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A kind of rubber formula, its raw material component allocation ratio is shown in Table 1.

[0014] A. Raw rubber into the roller: first adjust the roller distance to the minimum to 0.3-0.5mm, add tetrapropylene fluorine rubber FE4701 according to the formula, thin pass 9 times, after wrapping the roller, adjust the roller distance appropriately to ensure that the rubber material has a certain accumulation;

[0015] B, compounding of sizing material: add calcium hydroxide, magnesium oxide according to formula quantity to the plastic sizing compound that step A makes, then add thermal cracking carbon black N907, carbon black is all eaten up and then adds No. 3 vulcanizing agent, material After eating all of them, adjust the roller distance to the minimum of 0.3-0.5mm, thin pass 5 times, and park for 23 hours; the roller temperature is 50°C during mixing.

Embodiment 2

[0017] A kind of rubber formula, its raw material component allocation ratio is shown in Table 1.

[0018] A method for preparing rubber, comprising the steps of:

[0019] A. Raw rubber into the roller: first adjust the roller distance to the minimum to 0.3-0.5mm, add tetrapropylene fluorine rubber FE4701 according to the formula, thin pass 8 times, after wrapping the roller, adjust the roller distance appropriately to ensure that the rubber has a certain accumulation;

[0020] B. Compound mixing: Add calcium hydroxide and magnesium oxide according to the formula amount to the plastic compound prepared in step A, then add 2 / 3 thermal cracking carbon black N907 and 2 / 3 spray carbon black N900, add the remaining 1 / 3 thermal cracking carbon black N907 and spray strong carbon black N900 after eating up all the carbon black, add No. -0.5mm, thin pass 6 times, park for 25 hours; the roller temperature is 40°C during mixing.

Embodiment 3

[0022] A kind of rubber formula, its raw material component allocation ratio is shown in Table 1.

[0023] A method for preparing rubber, comprising the steps of:

[0024] A. Raw rubber into the roller: first adjust the roller distance to the minimum to 0.3-0.5mm, add tetrapropylene fluororubber FE4701 according to the formula, thin pass 10 times, after wrapping the roller, adjust the roller distance appropriately to ensure that the rubber has a certain accumulation;

[0025] B. Compound mixing: Add calcium hydroxide and magnesium oxide according to the formula amount to the plastic compound prepared in step A, then add 2 / 3 thermal cracking carbon black N907 and 2 / 3 spray carbon black N900, add the remaining 1 / 3 thermal cracking carbon black N907 and spray strong carbon black N900 after eating up all the carbon black, add No. -0.5mm, thin pass 6 times, park for 24 hours; the roller temperature is 50°C during mixing.

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Abstract

The invention discloses a formula of a rubber and a preparation method of the rubber. The formula of the rubber comprises: by weight, 100 parts of tetrafluoroethylene-propylene rubber, 1 to 5 parts of calcium hydroxide, 2 to 20 parts of magnesium oxide, 25 to 40 parts of carbon black and 1 to 5 parts of a vulcanizing agent. The preparation method comprises raw rubber rolling and rubber mixing. The rubber has good high temperature resistance and oil resistance. Under the conditions of a high temperature and utilization of a fuel containing multiple additives, the rubber can maintain good elasticity, does not soften, does not permeate and is suitable for manufacture of an oil-resistant sealing element which can work at a temperature of 150 to 200 DEG C.

Description

technical field [0001] The invention relates to the technical field of rubber manufacturing, in particular to a rubber formula and a preparation method thereof. Background technique [0002] With the rapid development of the modern automobile industry, in order to improve the service life of the engine and meet the requirements for emissions, the automobile engine requires high horsepower and energy saving. At the same time, the body is lowered and the space in the engine compartment is reduced. The increase is generally around 150°C-200°C. At the same time, the current fuel is also changing. A variety of component additives are added to the fuel. These additives will damage the engine crankshaft oil seal made of silicone rubber at a temperature of 150°C-200°C. Therefore, the engine crankshaft oil seal made of silicone rubber It has been unable to meet the requirements of new fuel resistance and high temperature resistance. Contents of the invention [0003] Aiming at th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/12C08K3/22C08K3/04B29B7/00
Inventor 潘琦俊杨建辉
Owner 芜湖禾田汽车工业有限公司