Composition bonded with organic silicon

A composition and silicone technology, applied in the field of compositions bonded with silicone, can solve the problems of reduced productivity, reduced work efficiency, poor adhesion, etc., and achieve excellent adhesion, excellent adhesion, and oil resistance. excellent effect

Inactive Publication Date: 2015-04-15
江门市阪桥电子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polyurethane is a multifunctional polymeric material with good processability, however, its thermal stability, surface properties, aging resistance, and pollution resistance are poor
While silicone resin has the advantages of good low temperature flexibility, low surface tension, and good biocompatibility, it also has disadvantages such as low mechanical strength and poor adhesion.
[0003] The surface activity of the layer obtained from polyurethane is not sufficient. Therefore, when laminating silicone, it is necessary to perform surface activation treatment on the surface of the layer in advance, including primer treatment, corona discharge treatment, plasma treatment, ozone treatment, Flame treatment, etc., but any method has the problem of causing a decrease in productivity and a decrease in work efficiency

Method used

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  • Composition bonded with organic silicon
  • Composition bonded with organic silicon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The formula list of embodiment 1-3 and comparative example

[0015]

[0016] The performance comparison of embodiment 1-3 and comparative example

[0017]

[0018] The compositions of Examples 1-3 and Comparative Example were coated on two different silicone surfaces purchased in the market, and placed in a hot air dryer at 100° C. for 30 minutes. Adhesive tape (manufactured by Mchiban Co., Ltd., Cloth Tape LS No. 101) was attached to the dried composition-coated surface, and the resistance value (adhesive strength) when the tape was peeled off was measured using "Shimadzu Corporation" Autograph measuring device IS-500D", measured at room temperature, under the conditions of a tensile speed of 50mm / min, as an indicator of adhesiveness.

[0019] In the experiment, the interface between the cured film of the composition and the silicone layer adhered firmly, but the silicone layer was broken in the peel test, and the adhesive strength at the time of peeling was ove...

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Abstract

The invention discloses a composition bonded with organic silicon. The composition comprises polyurethane, a solvent and a pigment and is characterized in that polyurethane comprises a polyhydric alcohol unit; the polyhydric alcohol unit is provided with a diorganopolysiloxane structure containing alkenyl; polyurethane is prepared by mixed reaction of the following ingredients: diorganopolysiloxane containing alkenyl, polyester diol, a chain extender and organic polyisocyanate at a molar ratio of (0.001-0.018):1:(0-2.11):3.11; and mean molecular weight of the polyhydric alcohol unit is 2000-4000. The bonding strength between the composition and the organic silicon exceeds 50N / 2.5cm.

Description

technical field [0001] This invention relates to compositions for bonding with silicones. Background technique [0002] Polyurethane is a multifunctional polymeric material with good processability, however, its thermal stability, surface properties, aging resistance, and pollution resistance are poor. While silicone resin has the advantages of good low temperature flexibility, low surface tension, and good biocompatibility, it also has disadvantages such as low mechanical strength and poor adhesion. [0003] The surface activity of the layer obtained from polyurethane is not sufficient. Therefore, when laminating silicone, it is necessary to perform surface activation treatment on the surface of the layer in advance, including primer treatment, corona discharge treatment, plasma treatment, ozone treatment, Flame treatment, etc., but any method has the problem of causing a reduction in productivity and a reduction in work efficiency. Contents of the invention [0004] An...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C08G18/67C08G18/66C08G18/42C08G18/32C08L75/14
CPCC08G18/724C08G18/3206C08G18/6705C08G18/755C08G18/7671C08L75/14
Inventor周中涛
Owner江门市阪桥电子材料有限公司