Adhesive for electronic-grade glass fiber yarns and preparation method of adhesive

Abstract

The invention discloses an adhesive for electronic-grade glass fiber yarns and a preparation method of the adhesive, and belongs to the technical field of electronic-grade glass fibers. The adhesive comprises the following raw materials in parts by weight: 1-2 parts of ethyl cellulose; 6-8 parts of an ethanol aqueous solution; 2-3 parts of sodium carboxymethyl cellulose; and 0.5-1.0 part of dibutyl phthalate. The preparation method comprises the following steps of: 1) mixing and stirring ethanol and ethyl cellulose to obtain an ethyl cellulose solution; 2) mixing and stirring ethanol and sodium carboxymethyl cellulose to obtain a sodium carboxymethyl cellulose solution; 3) pouring the sodium carboxymethyl cellulose solution into the ethyl cellulose solution, and stirring an obtained mixture for 2-3 hours to obtain a mixed solution; and 4) adding dibutyl phthalate into the mixed solution in parts by weight, and uniformly stirring an obtained mixture to obtain the adhesive. The adhesivefor the electronic-grade glass fiber yarns, disclosed by the invention, is strong in adhesive strength and high-temperature-resistant. After bonded by the adhesive, a joint is not easy to harden and not easy to discolor, the adhesive is unlikely to be left on the joint.

Description

technical field [0001] An adhesive used for electronic grade glass fiber yarn and a preparation method thereof belong to the technical field of electronic grade glass fiber. Background technique [0002] Electronic grade glass fiber is an important basic source material for electronic information, aerospace and other industries. It appears in almost every electronic component and is distributed in various fields of national economy and national defense industry. Electronic glass fiber cloth woven from electronic grade glass fiber, referred to as electronic cloth, is an indispensable basic material for the copper clad laminate and printed circuit board industry, and its performance largely determines the electrical properties of the copper clad laminate and printed circuit board. Performance, mechanical properties, dimensional stability and other important properties. [0003] The existing electronic-grade glass fiber yarn is prone to fluff and end breakage during the proces...

AI Technical Summary

Problems solved by technology

[0004] First of all, the existing adhesives have low adhesion, which leads to the problem of warped joints. Not only will the woven fabric surface be uneven, but the joints with warped joints are easy to break again (referred to as broken wires). parking treatment

Joints that are repeatedly bonded and broken not only reduce production efficiency, but also affect the appearance quality of products

In the prior art, in order to improve the firmness of the joint, the method of increasing the lap length of the joint is often adopted. The lap length of the existing joint is 10-12 cm. Although the adhesive force has been improved, the joint becomes long and Obviously, obvious defects are formed on the cloth surface, which reduces the quality of the cloth and affects the selling price

[0005] Secondly, the existing adhesives have poor flexibility after drying, resulting in too hard joints and difficult stretching. During the weaving process, the yarn is not easy to pass through the gap of the reed that controls the warp density, and the joints that are too hard are difficult to bend, and the yarn is easy to reassemble. fracture

Finally, the existing adhesives are not resistant to high temperature, and there are many residues after sintering

When the electronic cloth is sintered at a high temperature above 300°C, the existing adhesive residue is relatively high, and obvious, light yellow stains will be formed on the surface of the cloth after sintering, which will affect the appearance and price of the electronic cloth.

At the same time, when the existing adhesive-bonded yarn is surface-treated at a steam temperature of 140°C, after the joint is passed through the coupling agent, there are still light yellow traces, which are very obvious on the cloth surface of the electronic cloth, as marked, the joint Location

Affect the appearance quality of the product

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