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Primer for bonding silicon rubber to polyamide material and preparation method of primer

A technology of polyamide and primer, which is applied in the field of silicone rubber, can solve the problems of poor bonding effect with PA and poor storage stability, and achieve the effect of improving bonding and excellent bonding performance

Active Publication Date: 2015-04-29
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problems of poor storage stability and poor bonding effect with PA of the existing silicone rubber primer, the present invention provides a primer with good storage stability and good bonding effect with PA made of silicone rubber and polyamide material. Coating and its preparation method

Method used

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  • Primer for bonding silicon rubber to polyamide material and preparation method of primer

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preparation example Construction

[0030] The present invention also provides a kind of preparation method of the primer of silicone rubber and polyamide material bonding, and this method comprises the following steps:

[0031] S1. To prepare component A, add orthosilicate to the first solvent, and stir for 5-10 minutes; add titanate under stirring, and stir for 5-10 minutes; add silane coupling agent under stirring, and stir for 5 minutes -10min; add high hydrogen-containing siloxane under stirring state, and keep stirring for 30-60min; after static aging reaction, component A of the primer is obtained;

[0032] S2. Prepare component B, add polyamide oligomer to the second solvent, and stir to obtain component B;

[0033] S3, preparing a primer, mixing and stirring component A and component B to obtain a primer bonded with silicone rubber and polyamide materials;

[0034] Wherein, the total amount of the first solvent and the second solvent is 100 parts by weight, the polyamide oligomer is 0.05-5 parts by wei...

Embodiment 1

[0047] Preparation of polyamide oligomers:

[0048] Add 20.0g of hexamethylenediamine, 40.3g of adipic acid (amine:acid=0.625:1) and 0.1g of catalyst BC-98 in a 150mL three-neck flask equipped with a water separator, reflux condenser, stirrer and thermometer, Under the protection of N2, slowly raise the temperature to 100°C, start slow stirring, slowly raise the temperature to 150°C, keep warm for 2 hours, add 0.1g heat stabilizer TP2Pi, then raise the temperature to 200°C at a uniform speed within 2 hours, keep warm for 1h, Polyamide oligomer S1 was obtained.

Embodiment 2

[0050] Polyamide oligomer preparation:

[0051] Add 10.0g hexamethylenediamine, 10.0g o-phenylenediamine, 50.5g sebacic acid (amine:acid=0.71:1) and 0.12g of catalyst BC-98, under the protection of N2, slowly raise the temperature to 120°C, start to stir slowly, slowly raise the temperature to 160°C, keep it warm for 1h, add 0.15g of heat stabilizer TP2Pi, and then raise the temperature at a constant speed within 1h to 190° C. and keep it warm for 2 hours to obtain polyamide oligomer S2.

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Abstract

The invention provides a primer for bonding silicon rubber to a polyamide material. The primer is prepared from 100 parts by weight of solvent, 0.05-5 parts by weight of polyamide oligomer, 0.05-5 parts by weight of silane coupling agent, 1-10 parts by weight of normal silicate ester, 1-10 parts by weight of high hydrogen-containing siloxane and 1-10 parts by weight of titanate; the structural formula of the polyamide oligomer is as shown in the specification, wherein R1 represents one or more of C0-C16 alkyls and -C6H4- benzene ring groups; R2 represents one or more of C0-C16 alkyls and -C6H4- benzene ring groups; and n is integral multiple of 1-20. The invention also provides a preparation method of the primer. The primer is used for bonding the addition-type silicon rubber and the PA material, and a good bonding effect can be achieved.

Description

technical field [0001] The invention belongs to the field of silicone rubber, in particular to a primer for bonding silicone rubber and polyamide materials and a preparation method thereof. Background technique [0002] In the field of thermal vulcanization bonding of addition-type silicone and substrates, the corresponding silicone primer is used before rubber molding, which can be used to improve the adhesion of silicone rubber to different substrates. The most widely used primers are silicone, acrylic resin, epoxy resin, and their mixtures as film-forming agents. Among them, silicone-based primers have good compatibility and binding force with silicone rubber, and have become the most widely used mainstream products. [0003] The patent with the publication number CN1105052A discloses a surface tackifying treatment agent for silicone adhesives. The treatment agent consists of: titanate 3-20% (by weight), silicone resin 2-30%, organic silicate 10-25%, organic solvent 45-...

Claims

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Application Information

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IPC IPC(8): C09D183/05C09D185/00C09D177/06C09D7/12C08J5/12
Inventor 冷世伟胡文李海滨林宏业
Owner BYD CO LTD
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