Method for preparing room-temperature fast-curing addition organic silicon rubber

A silicone rubber, rapid vulcanization technology, applied in the chemical industry, can solve the problems of complicated process and slow room temperature vulcanization time, and achieve the effect of simple preparation method, good performance index and low production cost

Inactive Publication Date: 2010-07-21
佛山市华联有机硅有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still problems such as slow room temperature vulcanization time and complicated process in the existing vulcanized silicone rubber preparation method.

Method used

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  • Method for preparing room-temperature fast-curing addition organic silicon rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The present invention prepares the method for the organosilicon rubber of addition type rapid vulcanization at room temperature, first adds 25 parts of ethylene oils, 8 parts of white carbon black, 10 parts of silica gel to the reactor equipped with stainless steel stirrer, motor and heating system, Mix 2 parts of hydroxyl silicone oil, 40 parts of methyl vinyl silicone rubber, and 15 parts of liquid paraffin at room temperature, then raise the temperature to 150 ° C for 2 hours; after evacuating for 1 hour, discharge the material, and then filter to obtain the base rubber .

[0020] The filtered base glue is divided into two parts. Add 3 parts of platinum catalyst to 50 parts of base glue and stir evenly to form component A; add 5 hydrogen-containing silicone oil to 50 parts of base glue and stir evenly to form component B; , Mix A and B evenly, and vulcanize quickly in 5 minutes.

[0021] The ethylene oil in the raw material has a vinyl content of 1% and a viscosity ...

Embodiment 2～4

[0023] Compared with Example 1, the production process of Examples 2-4 is the same and will not be repeated. The proportioning, reaction time and temperature of each component in each embodiment are shown in Table 1 below.

[0024] Table 1 Example 2-4 Material Proportion (parts by weight)

[0025]

vinyl oil

white carbon

black

silicon gel

glue

Hydroxy silicon

Oil

Methyl B

alkenyl silicon

rubber

liquid

paraffin

Reaction temperature

degree / ℃

Reaction time

/ h

Example 2

30

20

10

1

14

25

150

1.5

Example 3

50

8

20

0.6

6.4

15

150

2

Example 4

25

4

15

2

24

30

150

2

[0026] Table 2 Example 2-4 Material Proportion (parts by weight)

[0027]

Example 2

Example 3

Example 4

platinum cat...

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Abstract

The invention discloses a method for preparing room-temperature fast-curing addition organic silicon rubber. The method is characterized by comprising the following steps of: firstly, burdening the following ingredients in portions by weight: 15-40 portions of ethylene oil, 2-30 portions of white carbon black, 1-20 portions of silicon gel, 0.1-5 portions of hydroxy silicone oil, 15-60 portions of methyl vinyl silicone rubber and 10-40 portions of liquid paraffin; then adding the ingredients to a reactor provided with a stainless steel stirring paddle, a motor and a heating system, uniformly mixing at the normal temperature, heating up and banburying for 1-3 hours; evacuating for 0.5-1.5 hours, discharging and filtering; and dividing a base rubber obtained after the filtering into two portions, respectively adding a platinum catalyst and hydrogen-containing silicone oil, and uniformly mixing to realize the fast curing. The invention has the advantages of simple process, room-temperature fast curing and the like.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a preparation method of addition-type room temperature rapid vulcanization silicone rubber. Background technique [0002] At present, addition type room temperature vulcanized silicone rubber refers to polysiloxane containing vinyl (abbreviated as base rubber) and crosslinking agent hydrogen-containing silicone oil under the action of a catalyst, which has a flexible network formed by the addition reaction of silicon at room temperature. Structural elastomers. Although the development time of addition-type room temperature vulcanized silicone rubber is not long, it is widely used in electronics, electrical appliances, aerospace, medicine and health, machinery manufacturing, etc. . However, the existing vulcanized silicone rubber preparation methods still have problems such as slow room temperature vulcanization time and complicated process. Contents of the invention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/06C08K13/02C08K3/36C08K5/01C08J3/24
Inventor 刘国杰薛瑜军肖燕平许锋
Owner 佛山市华联有机硅有限公司
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