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Heat-resistant high strength rubber material prepared from blend and manufacturing technology thereof

A technology for rubber materials and manufacturing processes, applied in the field of rubber materials and their manufacturing processes, can solve the problem of reduced mechanical properties and tensile strength, insufficient heat aging resistance of rubber materials, and insufficient tensile strength and elongation at break to meet technical requirements. and other problems, to achieve the effect of high heat aging resistance and high mechanical properties

Inactive Publication Date: 2018-11-20
湖南昶力轨道交通设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] It is difficult for general EPDM rubber materials to meet high heat resistance and rubber mechanical properties at the same time. The problem that often arises is that when EPDM compound rubber is required to have high heat aging resistance, it is difficult to use it alone. The peroxide vulcanization system can meet the heat resistance of the rubber compound, but the mechanical properties of the material, especially the tensile strength, are seriously reduced, resulting in that the tensile strength and elongation at break of the material cannot meet the technical requirements; When the tensile strength of the EPDM rubber compound is high, the sulfur vulcanization system is generally used, and its mechanical strength, especially the tensile strength of the material, can be greatly improved. However, the heat aging resistance of the rubber material is obviously insufficient. , can not meet the high heat aging performance

Method used

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  • Heat-resistant high strength rubber material prepared from blend and manufacturing technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The preparation of rubber is to put the blend into an open mill for mixing, wherein, the blend in this embodiment consists of 90-95 parts by weight of EPDM rubber, 4.5-95 parts of zinc oxide 5 parts, 0.8-1 part of stearic acid, 1-1.2 parts of N-isopropyl-N'-phenyl-p-phenylenediamine, 2,2,4-trimethyl-1,2-dihydroquinoline polymerization Body 0.85-1 part, microcrystalline wax 0.9-1 part, fast extruded carbon black 55-70 parts, calcium carbonate 25-30 parts, polyethylene glycol 1-1.2 parts, paraffin oil 18-25 parts, diperoxide 2-2.5 parts of cumene, 0.9-1.2 parts of sulfur, 1-1.2 parts of triallyl isocyanurate, 0.5-0.6 parts of tetramethylthiuram disulfide, 2,2'-dithiobis 0.75-0.9 parts of benzothiazole.

[0015] Among them, the preferred model of EPDM rubber is 6950, the preferred model of microcrystalline wax is LSB20, and the preferred model of fast extrusion carbon black is N550. The production steps are as follows: first put in raw rubber, then put in accelerator, re...

Embodiment 2

[0018] The difference from Example 1 is that the blend in this example consists of components by weight: 100 parts of EPDM rubber, 5 parts of zinc oxide, 1 part of stearic acid, N-isopropyl -N'-phenyl-p-phenylenediamine 0.9-1.2 parts, 2,2,4-trimethyl-1,2-dihydroquinoline polymer 0.8-1.1 parts, microcrystalline wax 1-1.2 parts, quick press 60-70 parts of carbon black, 30 parts of calcium carbonate, 0.9-1 part of polyethylene glycol, 15-20 parts of paraffin oil, 1.6-2 parts of dicumyl peroxide, 0.7-1.2 parts of sulfur, triallyl 1-1.2 parts of isocyanurate, 0.5-0.6 parts of tetramethylthiuram disulfide, 0.8-0.9 parts of 2,2'-dithiodibenzothiazole.

[0019] Please see the following table for the physical and mechanical properties of the present invention:

[0020]

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Abstract

The invention discloses a heat-resistant high strength rubber material prepared from a blend. The blend comprises the following components in parts by weight: EPDM rubber, zinc oxide, stearic acid, N-isopropyl-N'-phenyl p-phenylenediamine, 2,2,4-trimethyl-1,2-dihydride quinoline polymer, microcrystalline wax, quickly extruded carbon black, calcium carbonate, polyethylene glycol, paraffin oil, dicumyl peroxide, sulphur, triallyl isocyanurate, tetramethyl thiuram disulfide, and 2,2'-dibenzothiazole disulfide; the blend is put in an open mill to prepare the rubber. By using a novel vulcanizationsystem and using improved proportion of peroxide and sulfur sulfuration, relatively high mechanical performance of the rubber material can be met, and simultaneously, the heat-proof aging performanceof the material is also met.

Description

technical field [0001] The invention relates to a rubber material and a manufacturing process thereof, in particular to a rubber material with greatly improved heat resistance and strength and a manufacturing process thereof. Background technique [0002] The heat resistance and mechanical properties of general EPDM rubber materials are difficult to meet the high requirements at the same time. The problem that often arises is that when the EPDM rubber compound is required to have high heat aging resistance, it is difficult to use it alone. The peroxide vulcanization system can meet the heat resistance of the rubber compound, but the mechanical properties of the material, especially the tensile strength, are seriously reduced, resulting in the tensile strength and elongation at break of the material cannot meet the technical requirements; When the tensile strength of the EPDM rubber compound is high, the sulfur vulcanization system is generally used, and its mechanical streng...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L91/06C08L71/02C08K13/02C08K3/22C08K5/09C08K5/18C08K3/04C08J3/24
CPCC08J3/246C08J2323/16C08J2471/02C08J2491/06C08K3/04C08K5/09C08K5/18C08K13/02C08K2003/2296
Inventor 陈平郭秋顺
Owner 湖南昶力轨道交通设备有限公司