CN1033958A

CN1033958A - The new manufacturing method of insulating laminated sheet

Info

Publication number: CN1033958A
Application number: CN 88107161
Authority: CN
Inventors: 刘俊泉
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-10-21
Filing date: 1988-10-21
Publication date: 1989-07-19
Also published as: CN1009444B

Abstract

The production of insulating laminated sheet always is to flood gluing with resin solution, and is hot-forming at last; The present invention's characteristics are with type resin and promoter, curing agent, auxiliary agent etc. carry out prepolymerization reaction under certain condition admittedly, be processed into powder then, it is sprinkling upon equably on the fibrofelt (non-woven fabric) again, through baking, hot pressing makes various types of insulating laminated sheets or the multiple copper-clad laminate of printed circuit.It has production safety, no exhaust emission, solvent-free consumption, and product cost is lower, and semi-finished product are long storage period, advantages such as constant product quality.

Description

The new manufacturing method of insulating laminated sheet

The technical process of producing insulating laminated sheet always is that elder generation's manufacturing amount of solid is about 60% resin solution, flood gluing then, hot-forming at last, contain a large amount of organic solvents in the resin, therefore when the dipping gluing, a large amount of waste gas will be produced, cause environmental pollution, become disaster hidden-trouble, simultaneously, because the vapor concentration of organic solvent is very high in the gluing stove, influences the Ex-all of the free lower-molecular substance in the resin; And remain in the semi-finished product, finally have a strong impact on the quality of finished product.In addition, also cause great material, energy waste strengthens product cost.

The someone proposes that a kind of " powder spreads the glue method and " makes the glass felt laminate in recent years; But this imagination is still under test, and technology is rationalized, and plant machineryization still need be done a lot of work (annotating 1); The present invention has just solved this production technology problem preferably, and making it to be put to regular lot production becomes possibility.

The present invention's characteristics are not only to save a large amount of organic solvents, reduce production costs production safety, no exhaust emission; It is simple also to have technology simultaneously, and the semi-finished product storage periods is long, characteristics such as good quality of product;

Described in detail below in conjunction with example.

(example 1) takes by weighing 100 parts of a certain amount of solid type epoxy resin, 2～50 parts in curing agent (as anhydrides, resinae, amine etc.); Add 0.1～5 part of promoter (as asymmetry quaternary amine, tertiary amines, acetyl acetone salt etc.) and appropriate amount of addition agent and additive (as pigment, filler, plasticizer etc.) again, together put into reactor, in 50～150 ℃ of reactions 20～40 minutes, control gel time and be not less than 200 seconds/160 ℃; Unload then in container and after the cooling, be ground into the toner A in 200 mesh sieve holes again, stand-by.

With toner A100 part, add 2～30 parts of bromide fire retardants (as TBA, TBC, BDDP etc.); 2～10 parts of synergists (as stibium trioxide, Firebrake ZB etc.); Fully mix, make toner B, stand-by.

Be sprinkling upon equably on the glass mat respectively with toner A or toner B on the special glue machine then, controlling its glue content is 40～80%, in 100-140 ℃ of baking 5～15 minutes, makes corresponding gluing glass mat A or B;

According to the product thickness requirement, gluing glass mat A or B with some are made into superimposed respectively, put into press then in 140-170 ℃, unit pressure is that 3～10PMa kept 40-120 minute down, makes corresponding universal and self-extinguishing type modified epoxy fiberglass insulation pressing plate (hereinafter to be referred as laminate).№ 1 is universal laminate key property in the table 1; NO2 is a self-extinguishing type laminate key property.

(example 2) opened with aforementioned gluing glass mat A or B12, be made into superimposed respectively, scribble the oxidation gluing Copper Foil of JSF-4 adhesive at multiple individual of one or both sides again, or alligatoring passivation Copper Foil is put into press then in 140-170 ℃, unit pressure is that 3～10PMa kept 40～120 minutes down, makes the corresponding universal and multiple copper-clad laminate of self-extinguishing type modified epoxy glass mat (hereinafter to be referred as multiple paper tinsel plate); NO3 is universal multiple paper tinsel plate characteristic in the table 1; NO4 is the multiple paper tinsel plate characteristic of self-extinguishing type.

(example 3) is being sprinkling upon on the synthetic fibers felt equably with aforementioned resin powder B on the special glue machine, and controlling its glue content is 40～80%; In 100-130 ℃ of baking 5～10 minutes, make gluing synthetic fibers felt C;

According to the product thickness requirement, use and compose fibrofelt C12 and open and be made into superimposed, at its two extexine 1～2 aforementioned gluing glass mat B again respectively, scribble oxidation gluing Copper Foil of JSF-4 adhesive or alligatoring, passivation Copper Foil at multiple individual of its one or both sides again; Put into press then in 140-160 ℃, unit pressure is that 3～10PMa kept 40～120 minutes down, makes the multiple foil laminate of the thick single or double self-extinguishing type modified epoxy synthetic fibers of 1.2mm (being called for short multiple paper tinsel plate).Its characteristic is referring to № in the table 15; Comparative example is the domestic multiple foil laminate measured value of producing by traditional handicraft of epoxy glass fabric in the table 1;

(annotating 1) " insulating materials communication " NO in 1985, P93

" electrician uses the performance and the application of short glass fiber carpet veneer stampings "

The method of testing of each data and sample treatment conditions etc. are all carried out with reference to the regulation of relevant chapters and sections in the JISC6481-76 standard in (annotate 2) table 1.

Claims

The production of insulating laminated sheet always is to flood gluing with resin solution, and is hot-forming at last; The present invention's characteristics are with type resin and promoter, curing agent, auxiliary agent etc. give polycondensation reaction under certain condition admittedly; Be processed into powder then, it is sprinkling upon on the fibrofelt equably,, be hot pressed into various types of insulating laminated sheets (hereinafter to be referred as laminate) through baking, or the multiple copper-clad laminate of printed circuit (hereinafter to be referred as multiple paper tinsel plate).

1, by the present invention's feature,, makes dissimilar laminates or multiple paper tinsel plate respectively Gu can add curing agent, promoter, fire retardant, synergist, auxiliary agent and additive etc. in the type resin.

2, according to claim 1, curing agent can be anhydrides, resinae, amine etc., and its quantity is decided on product type, is generally 2～50% of resin;

3, according to claim 1, fire retardant can also be organic compounds such as phosphorous, chlorine, nitrogen except that brominated material, and their consumption is decided on requiring to reach flame retardant rating, is generally 2～30% of resin;

4, the feature according to the present invention, can be respectively with glass mat, synthetic fibers felt (non-woven fabric) or together make as supporting material, make dissimilar laminates or multiple paper tinsel plate;

5, according to claim 4, fibrofelt can give processing with method chemistry or physics, also can give processing without any, and this will be according to the resin that uses Type and deciding.