A kind of preparation method of solvent-free environment-friendly silicone resin for glass fiber bonding

Abstract

The invention provides a preparation method of silicone resin for adhesion of solvent-free environment-friendly glass fiber. The preparation method comprises the steps of (1) preparing solvent-free vinyl MDTQ silicone resin; (2) preparing vinyl phenyl silicone oil; (3) adding the vinyl MDTQ silicone resin, the vinyl phenyl silicone oil and precipitation method silicon dioxide into a reaction kettle according to the proportion of (2-4): (5-7): (1-2) in parts by weight, heating to 150-200 DEG C under stirring conditions, performing heat preservation for 2h, cooling and discharging to obtain base glue; (4) taking 100 parts by weight of the base glue, adding 8-6 parts by weight of hydrogen-containing silicone oil with the hydrogen content of 0.2-1%, uniformly stirring, and then packaging to obtain a component A; (5) taking 100 parts by weight of the base glue, adding 0.5-2 parts by weight of platinum complex catalyst, uniformly stirring, and then packaging to obtain a component B. When the A-B dual-component solvent-free silicone resin prepared by the preparation method provided by the invention is coated, organic solvents do not need to be added, the coating efficiency is improved, and the environmental pollution can be avoided.

Description

technical field [0001] The invention relates to a preparation method of a solvent-free and environment-friendly silicone resin for bonding glass fibers. Background technique [0002] At present, the silicone resin or silicone rubber used in the market for bonding glass fiber insulating sleeves, glass fiber silicone wires, outer glass fiber inner silicone insulating tubes, and glass fiber mica fire-resistant insulating tapes contain a large amount of toluene or xylene, etc. Organic solvent, the content of some products has exceeded 70%. When coating the above insulating and refractory products, it is necessary to add 0.8 to 1.5 times of organic solvents such as toluene or xylene to reduce the viscosity. Heating and curing at 180-220°C, all organic solvents will volatilize at this time and be directly discharged into the atmosphere, causing serious pollution to the environment. [0003] Searching online for the production and processing enterprises of the above four products,...

AI Technical Summary

Problems solved by technology

[0004] Over the years, many companies have tried to recover evaporated organic solvents through condensation, but they all failed. The main problems are as follows: ①The diffusion surface is large, the volatilization rate is high, and it is difficult to concentrate condensation ②After adding auxiliary equipment, the amount of organic solvent gas in the drying tunnel is too large It is easy to cause fire accidents ③The cost is too high for enterprises to accept