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Organic silicone adhesive containing nano-silver material and preparation method thereof

A technology of organic silica gel and nano-silver, applied in the direction of adhesives, adhesive additives, polymer adhesive additives, etc., can solve the problems of short service life, cracking, poor durability, etc., achieve good UV resistance, prolong service life, The effect of enhancing durability

Pending Publication Date: 2020-06-19
深圳市先进连接科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing silicone adhesives do not have antibacterial function, and are prone to cracking due to bacterial corrosion after long-term use, with poor durability and short service life.

Method used

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  • Organic silicone adhesive containing nano-silver material and preparation method thereof
  • Organic silicone adhesive containing nano-silver material and preparation method thereof

Examples

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Effect test

preparation example Construction

[0030] The present invention proposes a method for preparing a silicone adhesive containing nano-silver material as described above, comprising the following steps: weighing 28-55 parts of vinyl-terminated methylphenyl polysiloxane and 12-18 parts of amine compounds , 20-40 parts of terminal hydrogen-containing polysiloxane, 1-3 parts of toughening agent and 0.004-0.008 parts of platinum catalyst are added to a sealed reaction device under the protection of an inert gas, heated to 40-60 ° C, heated for 1- 2h; then add 3-6 parts of nano-silver and 1-5 parts of heat-resistant filler, stir at 40-60°C for 20-30min; then add 3-12 parts of o-hydroxybenzophenone and 1-2 parts of curing agent, continue Stir for 20-30 minutes and cool to room temperature to obtain a colorless liquid; then decompress the colorless liquid to remove air bubbles, heat and solidify at 40-80°C for 20-40 minutes to obtain a silicone adhesive.

[0031] Using the above method to prepare the silicone adhesive co...

Embodiment 1

[0034] Weigh 28 parts of 400cps terminal vinylmethylphenyl polysiloxane, 12 parts of N'N-4,4'-diphenylmethane type bismaleimide resin, and the terminal group hydrogen content is 0.01%. 20-40 parts of methyl phenyl polysiloxane, 1 part of carboxyl liquid nitrile rubber and 0.004 parts of chloroplatinic acid-tetramethyldivinyl disiloxane complex, add the sealing reaction under the protection of inert gas In the device, heat to 40°C for 1 hour; then add 3 parts of nano-silver and 1 part of benzimidazole, and stir at 40°C for 20 minutes; then add 3 parts of o-hydroxybenzophenone and 1 part of m-phenylenediamine, and continue stirring Cool to room temperature after 20 minutes to obtain a colorless liquid; then decompress the colorless liquid to remove air bubbles, and heat and solidify at 40°C for 20 minutes to obtain a silicone adhesive.

Embodiment 2

[0036] Weigh 55 parts of terminal vinylmethylphenylpolysiloxane at 2000cps, 18 parts of N'N-4,4'-diphenylmethane type bismaleimide resin, and the hydrogen content of the terminal group contains hydrogen at 0.5%. 40 parts of methyl phenyl polysiloxane, 3 parts of carboxyl liquid nitrile rubber and polysulfide rubber, 0.008 parts of chloroplatinic acid-tetramethyldivinyl disiloxane complex, under the protection of inert gas Put it into a sealed reaction device, heat to 60°C, and heat for 2 hours; then add 6 parts of nano-silver and 5 parts of benzimidazole, and stir at 60°C for 30 minutes; then add 12 parts of o-hydroxybenzophenone, triethanolamine and spirocyclic amine or 2 parts of N-(3-methyl)-N,N-dimethylurea, continue to stir for 30 minutes and cool to room temperature to obtain a colorless liquid; Under heating and curing for 40 minutes, the silicone adhesive can be obtained.

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Abstract

The invention relates to the technical field of high polymer materials, in particular to an organic silicone adhesive containing a nano-silver material and a preparation method thereof. The organic silicone adhesive is prepared from the following components: vinyl-terminated methyl phenyl polysiloxane, an amine compound, terminal group hydrogen-containing polysiloxane, o-hydroxybenzophenone, nano-silver, a toughening agent, heat-resistant filler, a curing agent and a platinum catalyst, and has an antibacterial function, and is better in durability and long in service life. The preparation method comprises the following steps of weighing vinyl-terminated methyl phenyl polysiloxane, the amine compound, the terminal group hydrogen-containing polysiloxane, the toughening agent and the platinumcatalyst, and adding the materials into a sealed reaction device for heating under the protection of inert gas, adding the nano-silver and the heat-resistant filler, and stirring, then adding o-hydroxybenzophenone and the curing agent, and continuously stirring, decompressing to remove bubbles, and heating and curing to obtain an organic silicone adhesive. The preparation process is simple, the obtained organic silicone adhesive is good in antibacterial effect, and the durability of the organic silicone adhesive is improved.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a silicone adhesive containing nano-silver material and a preparation method thereof. Background technique [0002] Silicone adhesives can be divided into two categories, namely adhesives based on silicone resin and adhesives based on silicone rubber. The chemical structure of the two is different: silicone resin is composed of a three-dimensional structure of silicon-oxygen bond as the main chain, which can be further condensed into a highly cross-linked hard and brittle resin at high temperature; while silicone rubber is a linear High-molecular-weight elastomers with silicon-oxygen bonds as the main chain have relative molecular masses ranging from tens of thousands to hundreds of thousands. They must be condensed into elastomers with several crosslinking points under the action of vulcanizing agents and catalysts. Due to the different cross-linking densities of the...

Claims

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Application Information

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IPC IPC(8): C09J183/07C09J183/05C09J179/08C09J11/04C09J11/06C09J11/08
CPCC09J183/04C09J11/04C09J11/06C09J11/08C08L2205/025C08L2201/08C08L2205/035C08K2201/011C08K2003/0806C08K2003/265C08L83/04C08L79/085C08L13/00C08K5/3475C08K3/08C08K5/132C08L81/04C08L71/02C08L81/06C08K3/26C08K13/02C08K3/22
Inventor 靳清岑玮吴昊姜亮
Owner 深圳市先进连接科技有限公司
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