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Sizing pretreatment agent composition for solidified silicon-containing surface and application thereof

A technology of pretreatment agent and composition, applied in the direction of coating, etc., can solve problems such as poor adhesive adhesion effect, damaged structure, and reduced practical value

Inactive Publication Date: 2013-01-30
GREAT EASTERN RESIN INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Cured silica gel has few functional groups and most of them are carbon-hydrogen single bonds. The surface free energy is low, so it is difficult to adhere to adhesives and difficult to bond with other substrates through adhesives.
Most of the past used sutures to fix the cured silicone on other materials, but this method will produce holes in the cured silicone, destroying its structure and affecting the overall aesthetics
The reactive silicone hot melt adhesive (trade name HM-2500) produced by Dow Corning (DOW CORNING) can be used to bond cured silicone; Very satisfying, especially then the effect fades over time
[0006] It can be seen from the above that although the cured silicone itself has excellent properties such as weather resistance, water resistance, and acid and alkali resistance, its practical value is greatly reduced due to its poor adhesive adhesion effect.

Method used

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  • Sizing pretreatment agent composition for solidified silicon-containing surface and application thereof
  • Sizing pretreatment agent composition for solidified silicon-containing surface and application thereof
  • Sizing pretreatment agent composition for solidified silicon-containing surface and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1 to 6

[0045] Prepare each composition according to the type and consumption of the ingredients listed in Table 1:

[0046] Table 1

[0047]

[0048] S1: Silane monomer, N-(n-butyl)-3-aminopropyltrimethoxysilane

[0049] S2: Silane monomer, 3-aminopropyltriethoxysilane

[0050] S3: Silane monomer, N-(2-aminoethyl)-3-aminopropyltrimethoxysilane

[0051] EAC: solvent, ethyl acetate

[0052] MEK: solvent, methyl ethyl ketone

[0053] TOL: solvent, toluene

[0054] HEMA: Acrylic monomer, hydroxyethyl methacrylate

[0055] IGRACURE 184: Photoinitiator

[0056] GRECO 302Si-1: Solvent

[0057] Next, the following adhesion test was carried out using the prepared composition.

Embodiment 7

[0059]After roughing the surface of several rubber substrates (vulcanized rubber sold by Zhentai Enterprise Co., Ltd.) and coating a layer of pre-treatment agent for rubber (GRECO 001AB), Dry at 60°C for 3 minutes, then apply a layer of water-based PU adhesive (GRECO 6608 with 4% by weight 367S) containing 4% by weight curing agent, and then dry the resulting rubber substrate at 60°C for 5 minutes.

[0060] Coat the composition obtained in Preparation Example 1 on the surface of HTV type, RTV type and cured silica gel with high tear strength (as listed in Table 2) with different hardness, and dry at 60°C for 3 minutes , coated a layer of water-based PU adhesive (GRECO 6608 with 4 wt% 367S) containing 4 wt% curing agent on the surface and dried at 60°C for 5 minutes.

[0061] Adhesive and pressing the rubber with the surface of the cured silicone rubber, after standing for 24 hours, test the adhesive strength according to ASTM D1876 method, the results are listed in Table 2.

...

Embodiment 8

[0070] The steps described in Example 7 were repeated, except that before coating the water-based PU adhesive on the surface of the silica gel, the AS-3000 machine was used to irradiate the surface of the silica gel with UV light for 7 minutes (the UV light irradiation height was 8 cm). The test results of the adhesive strength are listed in Table 3.

[0071] Table 3: Adhesion Strength Using UV Light Irradiation

[0072]

[0073] The unit of value is: kg / cm

[0074] *Indicates that the cured silicone material is broken

[0075] 1)，2)，3)，4) They are products 931TU, 941U, 951U and 971Ty of Leadtek Industrial Co., Ltd.

[0076] 5)，6)，7) They are products 40, 50N and 1990-60 of Leadtek Industrial Co., Ltd.

[0077] 8) Produced by Shangpin Three-dimensional Trademark Enterprise Co., Ltd.

[0078] It can be seen from Table 2 and Table 3 that the gluing pretreatment agent composition of the present invention can improve the adhesion between the cured silicone surface and th...

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Abstract

The invention relates to a sizing pretreatment agent composition for a solidified silicon-containing surface and application thereof. The composition comprises a polar organic solvent, an acrylic monomer and an amino-containing silane with a formula (R1O)x(R2) ySiR3NHR4, wherein R1 is independently H, C1-C12 alkyl or aryl; R2 is H, O, C1-C12 alkyl or aryl; R3 is C1-C6-extended alkyl, the extended alkyl is substituted by one or a plurality of aromatic ring(s), the carbon atom chain of the extended alkyl can be doped with one or a plurality of aromatic ring(s); R4 is H, C1-C12 alkyl, amino C1-C12 alkyl or aniline; and x is 0, 1, 2 or 3, y is 0, 1, 2 or 3, and the sum of x and y is 3. Based on the total weight of the composition, the content of the acrylic monomer reaches 0.01-25 weight percent, and the content of the amino-containing silane reaches 1-35 weight percent.

Description

technical field [0001] The present invention relates to a kind of gluing pretreatment agent (primer) composition that is used for cured (cured) silicon-containing surface and use thereof; Treatment compositions and uses thereof. Background technique [0002] At present, many items on the market use silicon-containing materials. Among them, silica gel is one of the most widely used materials. Its application range covers various fields, such as electrical insulation tubes, pacifiers, injection tubes, desiccants, and dust-proof films. Covers, components on food machinery, industrial flexible molds, adhesives, and caulking glue for glass or aluminum doors and windows, etc. Silica gel can also be called silicon-containing elastomer, which is "silicone elastomer" or "polymerized siloxanes" in English. It is mainly composed of organic and inorganic monomers. The typical chemical formula is [R 2 SiO] n , where R is each independently methyl, ethyl or phenyl. [0003] Among the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D4/00C08J7/04C08L83/04C03C17/28C03C25/28
Inventor 郭尚鑫蔡文清
Owner GREAT EASTERN RESIN INDAL