Post vulcanization free silicon rubber formula

A technology of two-stage vulcanization and silicone rubber, which is applied in the field of rubber and can solve problems such as limiting production efficiency

Active Publication Date: 2009-11-25
SHANDONG MEICHEN ECOLOGY & ENVIRONMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Silicone rubber products vulcanized by DCBP often need to undergo two-stage vulcanization in an oven at 160-200°C for 4-8 hours to achieve the purpose of supplementary vulcanization and prevent frost blooming. On the one hand, the two-stage vulcanization increases the production cost. Importantly, it limits productivity gains

Method used

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  • Post vulcanization free silicon rubber formula

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] Now in conjunction with two groups of embodiments the present invention is described in detail:

[0014] Second-stage vulcanization-free silicone rubber formula, the dosage is in parts by mass:

[0015] serial number

components

Example 1

Example 2

1

vinyl silicone rubber

100 copies

100 copies

2

Fumed silica

40 copies

50 copies

3

Diphenylsilanediol

3 copies

2.5 servings

4

Highly Active Magnesium Oxide

0.8 parts

0.5 parts

5

Ferric oxide

2 copies

1.5 servings

6

DCBP

1.5 servings

1.5 servings

[0016] Mix the rubber according to the above formula, and vulcanize according to the vulcanization conditions of 120°C×10min×10MPa in Example 1 and Example 2. The properties of the rubber are as follows:

[0017]

[0018] The non-secondary vulcanization silicone rubber formula proposed by the present invention has been describe...

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PUM

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Abstract

The invention discloses a post vulcanization free silicon rubber formula. The formula is characterized by comprising the following components by mass portion: 50 to 100 portions of vinylsiloxane rubber, 30 to 60 portions of fume colloidal silica, 2 to 5 portions of diphenyl silanediol, 0.5 to 1 portion of high-activity magnesia, 1 to 3 portions of ferric oxide and 1 to 2 portions of DCBP. The formula can achieve the following technical effects that: 1, the performance of the post vulcanization free silicon rubber is similar to that of the post vulcanization silicon rubber; and 2, the post vulcanization is saved and the blooming phenomenon does not occur. By the formula, one the one hand, the manpower energy consumption due to the post vulcanization can be saved, and the production cost can be reduced; and on the other hand, the time of the post vulcanization is saved, and the production efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of rubber, and in particular relates to a DCBP (2,4 dichlorobenzoyl peroxide) vulcanized non-secondary vulcanization silicone rubber formula. Background technique [0002] DCBP (2,4 dichlorobenzoyl peroxide) is a commonly used vulcanizing agent for silicone rubber, and DCBP is an indispensable vulcanizing agent in many occasions. Silicone rubber products vulcanized by DCBP often need to undergo two-stage vulcanization in an oven at 160-200°C for 4-8 hours to achieve the purpose of supplementary vulcanization and prevent frost blooming. On the one hand, the two-stage vulcanization increases the production cost. The important thing is that it limits the increase in production efficiency. [0003] Commonly used two-stage vulcanized silicone rubber formula and vulcanization process: [0004] Formula consumption is in parts by mass: [0005] serial number components Dosage / serving 1 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/00C08K13/02C08K3/36C08K5/541C08K3/22C08K5/14
Inventor 张磊
Owner SHANDONG MEICHEN ECOLOGY & ENVIRONMENT CO LTD
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