Flame-retardant light-transmittance sheet resin and preparation method thereof

Abstract

The invention relates to flame-retardant light-transmittance sheet resin. The flame-retardant light-transmittance sheet resin comprises raw materials in parts by mass as follows: 40-50 parts of HET acid, 12-19 parts of propylene glycol, 9-13 parts of ethylene glycol, 10-15 parts of maleic anhydride, 15-20 parts of phthalic anhydride, 40-70 parts of styrene and 0.01-0.03 parts of hydroquinone. During preparation, HET acid, propylene glycol, ethylene glycol, hydroquinone and phthalic anhydride are added to a reaction kettle, a mixture is heated to 200 DEG C, reacts and is dehydrated until an acid value reaches 45 mgKOH / g, and nitrogen is introduced for protection in the reaction process; introduction of nitrogen is stopped, and vacuumization is performed for further dehydration until the acid value reaches 30 mgKOH / g; the mixture is cooled to 160 DEG C, and polyester after reaction is sucked into a dilution kettle containing styrene for dilution; the dilution temperature does not exceed 80 DEG C. The flame-retardant light-transmittance sheet resin has good flame retardance and high light transmittance and has a refraction rate approaching to that of glass fiber, and the technological performance is good.

Description

technical field [0001] The invention relates to a flame-retardant light-transmitting plate resin and a preparation method thereof, and the resin is mainly used for manufacturing daylighting tiles. Background technique [0002] Lighting on the facades and walls of industrial plants, thermal insulation and lighting in agricultural vegetable greenhouses, roof lighting in public sports venues, flame retardant, anti-corrosion and heat insulation of buildings with special requirements; as well as warehouses, greenhouses, stations, docks, airports, commercial buildings, steel structures, etc. Many lighting fields require the use of lighting tiles. [0003] The existing colored light tiles are not flame retardant, and with the implementation of safety production regulations, flame retardant and fire prevention will become one of the mandatory indicators, but conventional colored light tile resins, in order to improve their flame retardant properties, Usually the following measures ...

AI Technical Summary

Problems solved by technology

[0004] 1. Add aluminum hydroxide to the resin system, but this method will increase the viscosity of the resin. In the subsequent process of making lighting tiles, the wettability with glass fibers is not good, and the workmanship is poor.

[0005] 2. Adding DCPP (phenyl phosphorus dichloride) to the resin system improves the flame retardancy, but reduces the strength of the final product;

[0006] 3. When antimony trioxide is added to the resin system, the light transmittance of the resin will become poor, and the viscosity will increase and the manufacturability will be poor.