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Preparation method of micro-foaming adhesive for FFC and micro-foaming hot melt adhesive film

A hot-melt adhesive film and micro-foaming technology, used in film/sheet adhesives, adhesives, non-polymer adhesive additives, etc. Melt dielectric coefficient and dielectric loss, etc., to achieve the effect of soft texture, low dielectric constant and low weight

Active Publication Date: 2020-01-21
广东莱尔新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the hot-melt adhesive film used for conventional FFC cables on the market is a solid adhesive layer. At the same time, considering that the hot-melt adhesive film needs to be filled with a large amount of filler / powder, it will increase the dielectric coefficient and dielectric strength of the hot-melt adhesive to a certain extent. Therefore, it is necessary to develop a hot melt adhesive that can not only meet the application requirements of conventional FFC cables and the existing mature production and processing technology, but also have the characteristics of high-speed transmission cables. Film, so as to further expand the direction of FFC cable development and application

Method used

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  • Preparation method of micro-foaming adhesive for FFC and micro-foaming hot melt adhesive film
  • Preparation method of micro-foaming adhesive for FFC and micro-foaming hot melt adhesive film
  • Preparation method of micro-foaming adhesive for FFC and micro-foaming hot melt adhesive film

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preparation example Construction

[0040] A kind of preparation method of microfoaming hot-melt adhesive film, comprises the following steps:

[0041] Step 1. Weigh the main resin and SEBS thermoplastic resin according to the mass fraction, add an organic solvent, perform high-speed stirring to disperse until uniform, and form a uniformly dispersed liquid organic mixture;

[0042] Step 2, adding flame retardant, titanium dioxide and antioxidant to the organic mixture obtained in the first step in sequence, stirring and dispersing again at high speed until a uniformly dispersed mixture is formed again;

[0043] Step 3, grinding and dispersing the uniformly dispersed organic mixed slurry, and filtering through a filter screen;

[0044] Step 4. Add heat-expandable microsphere foaming powder, and disperse evenly at high speed at room temperature;

[0045] Step 5, using a comma blade coating production process, coating the mixture in step 4 on the substrate film and then drying to obtain a micro-foamed hot melt adh...

Embodiment A

[0064] A kind of preparation method of microfoaming hot-melt adhesive film, comprises the following steps:

[0065] Step 1. Weigh the main resin and SEBS thermoplastic resin in parts by weight, add and dissolve aromatic hydrocarbon organic solvents, perform high-speed stirring and disperse until uniform, and form a uniformly dispersed liquid organic mixture;

[0066] Step 2, adding flame retardant, titanium dioxide and antioxidant to the organic mixture obtained in the first step in sequence, stirring and dispersing again at high speed until a uniformly dispersed mixture is formed again;

[0067] Step 3. Grinding and dispersing the uniformly dispersed organic mixed slurry, controlling the viscosity to 8000Mpa.s, at least 2 cycles, and finally filtering with a 300-mesh filter;

[0068] Step 4. Add heat-expandable microsphere foaming powder, and disperse evenly at high speed at room temperature;

[0069] Step 5, using a comma blade coating production process, coating the mixtur...

Embodiment B

[0083] A kind of preparation method of microfoaming hot-melt adhesive film, comprises the following steps:

[0084] Step 1. Weigh the main resin and SEBS thermoplastic resin in parts by weight, add and dissolve aromatic hydrocarbon organic solvents, perform high-speed stirring and disperse until uniform, and form a uniformly dispersed liquid organic mixture;

[0085] Step 2, adding flame retardant, titanium dioxide and antioxidant to the organic mixture obtained in the first step in sequence, stirring and dispersing again at high speed until a uniformly dispersed mixture is formed again;

[0086] Step 3. Grinding and dispersing the uniformly dispersed organic mixed slurry, controlling the viscosity to 8000Mpa.s, at least 2 cycles, and finally filtering with a 300-mesh filter;

[0087] Step 4. Add heat-expandable microsphere foaming powder, and disperse evenly at high speed at room temperature;

[0088] Step 5, using a comma blade coating production process, coating the mixtur...

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Abstract

The invention relates to a preparation method of a micro-foaming adhesive for an FFC and a micro-foaming hot melt adhesive film. The micro-foaming adhesive is prepared from 40 to 65 percent of matrixresin, 10 to 20 percent of SEBS thermoplastic resin, 21 to 33 percent of flame retardant, 0.5 to 1 percent of titanium dioxide, 0.6 to 1 percent of antioxidant and 0.5 to 3 percent of thermal expansion microsphere foaming powder, wherein the matrix resin is a mixture of SBS and SIS; according to the preparation method of the micro-foaming hot melt adhesive film, the micro-foaming hot melt adhesivefilm is prepared from the components of the micro-foaming adhesives in the steps (1)-(5). By mixing the SBS and SIS to form the matrix resin with combination of the SEBS thermoplastic resin and infiltration of the flame retardant, the hot melt adhesive film is prepared; the hot melt adhesive film product can achieve soft texture, low weight, low dielectric constant and good flame retardant effectat the same time, is a hot melt adhesive film capable of meeting the requirements of high-speed transmission cables, and caters to the lightweight application trend of the high-speed transmission cables at the same time.

Description

technical field [0001] The invention relates to the technical field of FFC wire adhesives, in particular to a preparation method of a microfoaming adhesive for FFC and a microfoaming hot melt adhesive film. Background technique [0002] FFC cable refers to FFC flexible flat cable, the full name is Flexible Flat Cable; it is mainly used in flexible flat transmission cable products such as printers, copiers, TVs, notebook computers and smart homes. At present, the hot-melt adhesive film used for conventional FFC cables on the market is a solid adhesive layer. At the same time, considering that the hot-melt adhesive film needs to be filled with a large amount of filler / powder, the dielectric coefficient and dielectric coefficient of the hot-melt adhesive will be increased to a certain extent. loss, so that it cannot meet the application requirements of high-end high-speed transmission cables; therefore, it is necessary to develop a hot melt adhesive that can not only meet the a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J153/02C09J11/04C09J11/06C09J7/30C08J9/32
CPCC08J9/0019C08J9/0061C08J9/0066C08J9/32C08J2203/22C08J2353/02C08J2453/02C08K2003/2224C08K2003/2227C08K2003/2241C08L2201/02C08L2203/14C08L2205/025C08L2205/03C09J11/04C09J11/06C09J153/02C09J7/30C09J2301/304C08L53/02C08L53/025C08K13/02C08K3/22C08K3/2279C08K5/03
Inventor 李政郭伟林
Owner 广东莱尔新材料科技股份有限公司