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Die membrane silica gel and preparation method thereof

A silicone and mold technology, applied in the field of mold film silicone, can solve the problems of poor operating performance, fluidity and adhesion, unable to meet the requirements of thermal transfer performance, insufficient hardness, etc., to achieve convenient thermal transfer and shrinkage. Small rate, good pulling effect

Inactive Publication Date: 2017-09-22
广东省良展有机硅科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the mold film silicone on the market is not very good in operation performance, fluidity and adhesion, with large shrinkage, low tensile force and insufficient hardness, which cannot meet the performance requirements of heat transfer printing.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1, a mold film silica gel provided in this embodiment is composed of the following raw materials in parts by mass: 100 parts of vinyl polysiloxane, 25-35 parts of white carbon black, 0.15-0.2 parts of inhibitor, 0.1 -0.5 parts of platinum catalyst, 2-5 parts of tackifier and 2-4 parts of high hydrogen-containing silicone oil.

[0025] The vinyl polysiloxane is a polydiorganosiloxane containing two or more vinyl groups.

[0026] The vinyl polysiloxane is a double-ended vinyl polydimethylsiloxane with a viscosity of 10,000 mPa.s-20,000 mP.s.

[0027] The inhibitor is one or both of methyl butynol, ethynyl cyclohexanol, phenyl butynol and propyl butynol.

[0028] The white carbon black is surface-treated fumed white carbon black.

[0029] The platinum catalyst is H 2 PtCl 6 isopropanol solution, H 2 PtCl 6 One or a mixture of at least two of tetrahydrofuran solution, methyl vinyl polysiloxane coordinated platinum complex.

[0030] A kind of preparation me...

Embodiment 2

[0040] Embodiment 2, a kind of mold film silica gel provided in this embodiment, it is made up of following raw material: 100g vinyl polysiloxane (ViMe 2 Si(Me 2 SiO)nSiMeVi), 25g fumed white carbon black, 0.1g platinum catalyst, 2g epoxy hydrocarbon-based modified silicone oil, 2g high hydrogen-containing silicone oil (hydrogen content 1.6%) and 0.15g ethynyl cyclohexanol.

[0041] Add 100 g of vinyl polysiloxane (ViMe 2 Si(Me 2 SiO)nSiMeVi), then add 25g of fumed silica, knead at 160°C for 30 minutes until kneading is uniform, then put it into a planetary mixer, add 0.1g of platinum catalyst, 2g of epoxy-based hydrocarbon-based modified silicone oil, and mix 30 minutes, and vacuumize to obtain A component. Then put 2 g of high hydrogen-containing silicone oil (hydrogen content 1.6%) and 0.15 g of ethynyl cyclohexanol into a disperser, and disperse for 15 minutes to obtain component B. When in use, mix components A and B evenly to obtain mold film silica gel.

Embodiment 3

[0042] Embodiment 3, a kind of mold film silica gel provided by this embodiment, it is made up of following raw material: 100g vinyl polysiloxane (ViMe 2 Si(Me 2 SiO)nSiMeVi), 35g fumed white carbon black, 0.5g platinum catalyst, 5g epoxy hydrocarbon-based modified silicone oil, 4g high hydrogen-containing silicone oil (hydrogen content 0.8%) and 0.2g ethynyl cyclohexanol.

[0043] Add 100 g of vinyl polysiloxane (ViMe 2 Si(Me 2 SiO)nSiMeVi), then add 35g of fumed silica, knead at 160°C for 30 minutes until kneading is uniform, then put it into a planetary mixer, add 0.5g of platinum catalyst, 5g of epoxy-based hydrocarbon-based modified silicone oil, and mix 30 minutes, and vacuumize to obtain A component. Then put 4g of high hydrogen-containing silicone oil (0.8% hydrogen content) and 0.2g of ethynyl cyclohexanol into a disperser, and disperse for 15 minutes to obtain component B. When in use, mix components A and B evenly to obtain mold film silica gel.

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Abstract

The invention discloses die membrane silica gel. The die membrane silica gel is prepared from the following raw materials in parts by mass: 100 parts of vinyl polysiloxane, 25 to 35 parts of white carbon black, 0.15 to 0.2 part of an inhibitor, 0.1 to 0.5 part of a platinum catalyst, 2 to 5 parts of a tackifier and 2 to 4 parts of polymethylhydrosiloxane. The invention also discloses a preparation method of the die membrane silica gel. The die membrane silica gel prepared by the method not only can meet the performance requirements of die silica gel, but also can realize adhesion with a hot melting adhesive membrane, so that thermal transfer printing can be conveniently realized, the operating performance, the fluidity and the adhesion are good, a water shrinkage rate is small, the tension is good, the hardness is suitable for products to use, and the performance requirements for thermal transfer printing are met.

Description

technical field [0001] The invention relates to the field of thermal transfer printing silica gel, in particular to a mold film silica gel and a method for preparing the mold film silica gel. Background technique [0002] Mold film silica gel is generally composed of base rubber, crosslinking agent, catalyst, filler and additives. The vulcanization is carried out at room temperature. Adding an appropriate amount of curing agent to the main rubber component can produce crosslinking reaction and form a Flexible, elastic gel. Mainly used in toy gift industry, craft gift industry, furniture decoration industry, architectural decoration industry, clothing decoration industry, etc. [0003] In the market, mold silicone is relatively mature, and as a new product, mold film silicone must not only meet the characteristics of mold silicone, but also have good adhesive properties to realize the function of heat transfer. [0004] At present, the mold film silicone on the market is no...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08L83/06C08L83/05C08K3/36C08K5/05
CPCC08L83/04C08L2205/02C08L2205/025C08L2205/03C08K3/36C08L83/06C08K5/05
Inventor 王志良
Owner 广东省良展有机硅科技有限公司
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