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Calcium sulfate whisker modified EPDM rubber and preparation process thereof

A technology of EPDM rubber and calcium sulfate whiskers is applied in the field of calcium sulfate whisker modified EPDM rubber and its preparation technology, which can solve the problem of weak interface adhesion, easy agglomeration of short fibers, limited application scope, etc. problem, to achieve the effect of stable performance and high strength

Active Publication Date: 2013-03-20
XIANGFU NEW BUILDING MATERIAL HUNAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the short fiber and the rubber matrix only rely on the Van der Waals force, and the fiber and the rubber have strong chemical bonds, the short fiber is easy to agglomerate and the interface adhesion is weak, which limits its application range.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0013] Example 1-2 See Table 1 for the weight ratio of raw materials of calcium sulfate whisker modified EPDM rubber.

[0014] The preparation method of each embodiment calcium sulfate whisker modified EPDM rubber:

[0015] (1) Add calcium sulfate whiskers to a high-speed mixer, heat and stir, add titanate surface treatment agent diluted with quantitative liquid paraffin at 100°C, and mix for 6 minutes to obtain modified calcium sulfate whiskers;

[0016] (2) Mix EPDM, modified calcium sulfate whiskers and furnace carbon black on an open mill for 6 minutes, then add sulfur, tetramethylthiuram disulfide, zinc oxide and paraffin, and mix for 3 minutes to obtain sheet, the roller pitch is 1mm, and the roller temperature is 100°C.

[0017] Example 1-2 The mechanical performance test of the product was carried out according to the method specified by ATSM, and the results are shown in Table 2.

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Abstract

The invention discloses a calcium sulfate whisker modified ethylene-propylene-diene monomer (EPDM) rubber and a preparation process thereof. The calcium sulfate whisker modified EPDM rubber is prepared from the following raw materials in part by weight: 100 parts of EPDM rubber, 15 to 25 parts of calcium sulfate whisker, 10 to 20 parts of furnace black, 0.5 to 1.5 parts of sulfur, 0.5 to 2 parts of tetramethylthiuram disulfide, 2 to 4 parts of zinc oxide, 1 to 3 parts of paraffin, and 1 to 3 parts of titanate surfactant. The invention also discloses the preparation process for the calcium sulfate whisker modified EPDM rubber. The calcium sulfate whisker modified EPDM rubber has high strength and stable performance, and is particularly suitable for manufacturing products with high strength requirement such as automobile transmission belts and the like.

Description

technical field [0001] The invention relates to EPDM rubber and a preparation process thereof, in particular to calcium sulfate whisker modified EPDM rubber and a preparation process thereof. Background technique [0002] Short fiber reinforced rubber composites (SFRC) organically combine the flexibility of rubber with the rigidity of fibers, which not only maintains the high elasticity of rubber, but also has the characteristics of high modulus at low elongation and high transverse stiffness. And longitudinal flexibility, so it is widely used as a rubber material for various automobile transmission belts to improve its transmission efficiency and flex fatigue resistance. Ethylenepropylene diene monomer (EPDM) has excellent heat resistance, aging resistance, and low cost. It can be used as a matrix material for preparing SFRC to meet the application requirements of high-strength places such as automobile transmission belts. However, because the short fiber and the rubber ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/16C08K13/06C08K9/04C08K7/08C08K3/04C08K3/06C08K5/40C08K3/22
Inventor 刘珍如刘立文付桃梅杨志强宁勇鲁纪鸣
Owner XIANGFU NEW BUILDING MATERIAL HUNAN
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