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Condensed type die silicone rubber and preparation method thereof

A silicone rubber, condensation-type technology, applied in the field of silicone rubber preparation, can solve the problems of poor resistance to medium and high temperatures, slow finger drying, etc.

Active Publication Date: 2013-12-25
兆舜科技(广东)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the mold silicone rubber disclosed in the prior art has poor resistance to medium and high temperatures, and there are problems in the early stage of product operation and curing process, and the problem of slow drying in the later stage.

Method used

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  • Condensed type die silicone rubber and preparation method thereof
  • Condensed type die silicone rubber and preparation method thereof
  • Condensed type die silicone rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] A kind of condensation mold silicone rubber, described mold silicone rubber comprises A component and B component, and it comprises by weight parts:

[0073] Component A:

[0074]

[0075] Component B:

[0076] Catalyst 10 parts

[0077] 30 parts of cross-linking agent

[0078] Accelerator 2 parts;

[0079] The weight ratio of the A component and the B component is 100:1.5.

[0080] The simethicone is selected from simethicone with a viscosity of 100 cps.

[0081] The alkoxy silicone oil is selected from the alkoxy silicone oil with a viscosity of 300 cps.

[0082] The silica is precipitated silica.

[0083] The dihydroxy polydimethylsiloxane is selected from dihydroxy polydimethylsiloxanes with a viscosity of 1000 cps.

[0084] The semi-reinforcing filler is silicon micropowder.

[0085] The weight-increasing filler is heavy calcium carbonate.

[0086] The high temperature resistant material is iron red.

[0087] The catalyst is dibutyl tin diacetate.

[...

Embodiment 2

[0095] A kind of condensation mold silicone rubber, described mold silicone rubber comprises A component and B component, and it comprises by weight parts:

[0096] Component A:

[0097]

[0098] Component B:

[0099] Catalyst 40 parts

[0100] Cross-linking agent 80 parts

[0101] Accelerator 10 parts;

[0102] The weight ratio of the A component and the B component is 100:3.

[0103] The simethicone oil is selected from simethicone oils with a viscosity of 1000 cps.

[0104] The alkoxy silicone oil is selected from alkoxy silicone oils with a viscosity of 1500 cps.

[0105] The silica is precipitated silica.

[0106] The dihydroxypolydimethylsiloxane is selected from dihydroxypolydimethylsiloxanes with a viscosity of 100000 cps.

[0107] The semi-reinforcing filler is a mixture of silicon micropowder, zinc oxide and titanium dioxide.

[0108] The weight-increasing filler is a mixture of heavy calcium carbonate, light calcium carbonate, kaolin and montmorillonite. ...

Embodiment 3

[0118] A kind of condensation mold silicone rubber, described mold silicone rubber comprises A component and B component, and it comprises by weight parts:

[0119] Component A:

[0120]

[0121] Component B:

[0122] Catalyst 22 parts

[0123] 54 parts of cross-linking agent

[0124] Accelerator 5 parts;

[0125] The weight ratio of the A component and the B component is 100:2.1.

[0126] The simethicone oil is selected from simethicone oil with a viscosity of 563 cps.

[0127] The alkoxy silicone oil is selected from alkoxy silicone oils with a viscosity of 876 cps.

[0128] The silica is precipitated silica.

[0129] The dihydroxy polydimethylsiloxane is selected from dihydroxy polydimethylsiloxanes with a viscosity of 25000 cps.

[0130] The semi-reinforcing filler is zinc oxide.

[0131] The weight-increasing filler is light calcium carbonate.

[0132] The high temperature resistant material is iron yellow.

[0133] The catalyst is stannous octoate.

[0134]...

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Abstract

The invention relates to condensed type die silicone rubber and a preparation method thereof. The silicone rubber comprises a component A and a component B, wherein the weight ratio of the component A to the component B is 100:(1.5-3); the component A is composed of dimethicone, silicon dioxide, dyhydroxyl polydimethylsiloxane, semi-reinforced filler, weighting filler and a high temperature resistance material in a certain proportion; the component B is composed of a catalyst, a crosslinking agent and an accelerant in a certain proportion. The condensed type die silicone rubber is prepared by adopting the following steps: preparing the component A; preparing the component B; uniformly mixing the prepared component A and the prepared component B in the mass proportion. The die silicone rubber is excellent in fluidity, can endure a high temperature of 200 DEG C, and is good in physical mechanical performance and wide in application range.

Description

technical field [0001] The invention belongs to the technical field of silicone rubber preparation, and relates to a condensation mold silicone rubber and a preparation method thereof, in particular to a medium- and high-temperature-resistant condensation mold silicone rubber and a preparation method thereof. Background technique [0002] Silicone rubber mold is Room Temperature Vulcanization (RTV) for short, which is a two-component compound. Its vulcanization is carried out at room temperature. As long as the two components are mixed according to a certain ratio (the specific ratio can be determined according to the operating time and product performance), the two-component compound will undergo a cross-linking reaction to form a flexible and elastic colloid. Suitable for Polyster resin (POLYSTER), epoxy resin (EPOXY), PU foam resin, gypsum, cement, candles, electronics and other craft factories, toy factories, electronics factories, lamp factories, silk screen factories, ...

Claims

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Application Information

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IPC IPC(8): C08L83/06C08L83/04C08K13/06C08K9/06C08K3/36C08K3/26C08K3/22C08K3/34B29B7/00
Inventor 蓝春霞陈芳黄永军
Owner 兆舜科技(广东)有限公司
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