Flame-retarding board material used for drilling and preparation method thereof

The technology of a board and a flame retardant is applied in the field of flame retardant board for drilling and its preparation, which can solve the problems of epoxy resin board, aluminum sheet characteristic index and flame retardant performance not meeting the requirements, and achieve good positioning effect, Enhanced flame retardant effect and good chip removal effect

Inactive Publication Date: 2018-04-06
烟台柳鑫新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a kind of flame-retardant plate for drilling and its preparati

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) Preparation of flame retardant resin (% is weight percentage)

[0047] a. Under stirring conditions, first add 11% of water, 36% of phenol, 13% of formaldehyde, and 3.5% of melamine, the stirring speed is 60r / min, the temperature is 20°C, and the stirring time is 30min to prepare a mixed solution;

[0048]b. Add 0.8% triethylamine, 1.8% tricresyl phosphate, and 3% tris(2-chloroethyl)phosphate to the mixed solution in step a, heat up to 80°C, and keep warm at this temperature Reaction 60min;

[0049] c. When the gel solution becomes emulsified and stratified, start vacuum dehydration, and the dehydration time is 3 hours. After the glue solution becomes transparent, the temperature rises to 82°C, and the dehydration is stopped;

[0050] d. Add 30.9% methanol, stir and cool for 50 minutes, and the stirring speed is 60r / min to prepare a flame-retardant resin.

[0051] After observation and testing: the flame retardant resin liquid is transparent, the solid content is ...

Embodiment 2

[0057] (1) Preparation of flame retardant resin

[0058] a. Under stirring conditions, first add 11% water, 16% phenol, 20% procresol, 4% formaldehyde, 9% paraformaldehyde, 3.5% melamine, stirring speed 60r / min, temperature 20°C , the stirring time was 30min, and the mixed solution was obtained;

[0059] b. Add 0.3% triethylamine, 0.5% ammonia water, 0.8% tricresyl phosphate, 1% triphenyl phosphite, 3% tris(2-chloroethyl) phosphate to the mixed solution in step a Esters, heated up to 80°C, kept at this temperature for 60 minutes;

[0060] c. When the gel solution becomes emulsified and stratified, start vacuum dehydration, and the dehydration time is 3 minutes. After the glue solution becomes transparent, the temperature rises to 82°C, and the dehydration is stopped;

[0061] d. Add 30.9% methanol, stir and cool for 50 minutes, and the stirring speed is 60r / min to prepare a flame-retardant resin.

[0062] After observation and testing: the flame retardant resin is transpare...

Embodiment 3

[0068] (1) Preparation of flame retardant resin

[0069] a. Under stirring conditions, first add 11% of water, 16% of phenol, 5% of cresol, 15% of cardanol, 4% of formaldehyde, 9% of paraformaldehyde, and 3.5% of melamine, and the stirring speed is 60r / min, the temperature is 20°C, and the stirring time is 30min to prepare a mixed solution;

[0070] b. Add 0.15% triethylamine, 0.15% triethanolamine, 0.5% ammonia, 0.8% tricresyl phosphate, 1% triphenyl phosphite, 1% aluminum hydroxide to the mixed solution of step a , 3% tris (2-chloroethyl) phosphate, heated up to 80 ° C, and kept at this temperature for 60 minutes;

[0071] c. When the gel solution becomes emulsified and stratified, start vacuum dehydration, and the dehydration time is 3 hours. After the glue solution becomes transparent, the temperature rises to 82°C, and the dehydration is stopped;

[0072] d. Add 29.9% methanol, stir and cool for 50 minutes, and the stirring speed is 60r / min to prepare a flame-retardant...

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Abstract

The invention discloses a flame-retarding board material used for drilling and a preparation method thereof. The flame-retarding board material is produced from paper and flame-retarding resin in a hot-pressing manner with impregnation. In the invention, the flame-retarding board material is 0.2-0.5 mm in thickness, is less than 1% in warping degree, is 84-92 shore D in hardness and is V1-V0 in flame-retarding level. The main resin material of the board material is phenolic resin, which has moderated hardness, density and strength and belongs to thermosetting resin, so that during drilling, adrill can easily drill the board material, thus achieving excellent positioning effect. The board material has good chip discharge effect and can avoid fracture of the drill. Due to addition of a flame-retarding agent, flame-retarding effect of the resin is reinforced, so that the flame-retarding board material can reach the V0 flame-retarding level.

Description

technical field [0001] The invention relates to the technical field of a cover plate for drilling a printed circuit board, in particular to a flame-retardant plate for drilling and a preparation method thereof. Background technique [0002] Nowadays, environmental protection and safety requirements are becoming increasingly stringent, and the plates used for drilling must also meet the flame-retardant requirements to avoid explosion accidents caused by dust generated in drilling applications. The resin described in this article is used in the field of circuit board drilling caps and backing plates. It is required to have good characteristics and flame retardancy, and to ensure that there will be no problems such as broken needles, drill needle residues, and plugged holes during the drilling process. Commonly used epoxy resin boards, aluminum sheets, etc. obviously cannot meet environmental protection and safety requirements. [0003] Therefore, the prior art still needs to ...

Claims

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Application Information

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IPC IPC(8): B32B29/00B32B29/06C08G14/10B32B27/04B32B37/06B32B37/10B32B38/08
CPCB32B29/005B32B29/06B32B37/06B32B37/10B32B38/08B32B2250/26B32B2260/028B32B2260/046B32B2307/3065B32B2309/022B32B2309/025B32B2309/125B32B2457/08C08G14/10
Inventor 刘飞刘玉斌罗小阳
Owner 烟台柳鑫新材料科技有限公司
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