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Silicon rubber and EPDM mixed rubber and preparation method thereof

A silicone rubber and rubber technology, which is applied in the field of silicone rubber, EPDM blended rubber and its preparation, can solve the problems of high strength, poor mechanical properties of silicone rubber, etc., and achieve the effect of low cost and simple preparation method

Inactive Publication Date: 2013-02-27
福建省工研苑塑胶技术研发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical properties of silicone rubber are poor and cannot meet the requirements of high-strength occasions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1. Raw materials: EPDM (Lion brand 539), EPDM (DuPont 4520), flow dispersant FC-608, silane KH-171, and other raw materials are common domestic raw materials in the rubber industry.

[0035] 2, the raw material formulation of silicone rubber / EPDM blended rubber of the present invention is as follows in parts by weight:

[0036] EPDM (Lion brand 539): 60

[0037] EPDM (DuPont 4520): 10

[0038] Silicone rubber: 30 parts

[0039] White oil: 25

[0040] Activator ZnO: 4

[0041] Stearic Acid: 1

[0042] FC—608: 2

[0043] Calcium Stearate: 1

[0044] Accelerator TMTD: 0.7

[0045] Accelerator M: 0.4

[0046] Silane KH-171: 1.2

[0047] Silica: 50

[0048] Aluminum hydroxide: 15

[0049] Calcined kaolin: 40

[0050] Glass beads: 20

[0051] Sulfur: 0.5

[0052] Auxiliary cross-linking agent TAIC: 0.5

[0053] Cross-linking agent BIPB: 2.5

[0054] 3. The specific steps of the preparation method are as follows:

[0055] (1) Batching: batching according to th...

Embodiment 2

[0065] Each component in the raw material formula of described silicone rubber / EPDM / blend rubber is by weight:

[0066] EPDM: 60 copies

[0067] Silicone rubber: 40 parts

[0068] ZnO: 3 parts / 100 parts rubber

[0069] Stearic acid: 0.8 parts / 100 parts rubber

[0070] Accelerator TMTD: 0.6 parts / 100 parts rubber

[0071] Accelerator M: 0.4 parts / 100 parts of rubber

[0072] Silane coupling agent: 1 part / 100 parts of rubber

[0073] FC—608: 1.5 parts / 100 parts rubber

[0074] Calcium stearate: 1.5 parts / 100 parts rubber

[0075] Silica: 60 parts / 100 parts rubber

[0076] White oil: 30 parts / 100 parts rubber

[0077] Calcined kaolin: 40 parts / 100 parts rubber

[0078] Glass beads: 20 parts / 100 parts rubber

[0079] BIPB: 2.5 parts / 100 parts rubber

[0080] Sulfur: 0.5 parts / 100 parts rubber

[0081] TAIC: 0.8 parts / 100 parts rubber.

[0082] The preparation method is the same as in Example 1. This ing...

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PUM

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Abstract

The invention provides silicon rubber and ethylene-propylene-diene monomer (EPDM) mixed rubber and a preparation method thereof. The silicon rubber and EPDM mixed rubber comprises 60 to 70 weight parts of EPDM and 30 to 40 weight parts of silicon rubber, and also comprises 2 to 4 weight parts of ZnO, 0.5 to 1 weight part of stearic acid, 1 to 1.2 weight parts of accelerator, 1 to 1.5 weight parts of silane coupling agent, 2 to 3 weight parts of processing aid, 50 to 60 weight parts of white carbon black, 25 to 30 weight parts of white oil, 70 to 80 weight parts of filler, 2.3 to 2.7 weight parts of bis(tert-butyldioxyisopropyl)benzene (BIPB), 0.4 to 0.8 weight part of sulfur and 0.5 to 1 weight part of triallyl isocyanurate (TAIC) based on 100 parts of EPDM and silicon rubber. The silicon rubber and EPDM mixed rubber with high mechanical property is prepared by mixing the raw materials; and the preparation method is simple, and low in cost.

Description

technical field [0001] The invention relates to a silicone rubber, EPDM blended rubber and a preparation method thereof. Background technique [0002] Silicone rubber products have unique comprehensive properties such as excellent high temperature resistance, low permanent deformation, weather resistance, and aging resistance. Applications are increasingly widespread. However, the mechanical properties of silicone rubber are poor and cannot meet the requirements of high-strength occasions. EPDM has a main chain of multiple polyethylene and polypropylene, high saturation, low cohesive energy, molecular chains maintain flexibility in a wide temperature range, and have good mechanical properties and process properties. [0003] After using EPDM rubber and silicone rubber together, the heat resistance, weather resistance, low temperature flexibility and electrical properties are further improved; the mechanical properties of silicone rubber are also greatly improved. The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/16C08L83/04C08L83/07C08K13/02C08K3/22C08K5/09C08K5/54C08K3/36C08K3/06
Inventor 詹国春
Owner 福建省工研苑塑胶技术研发有限公司