A kind of halogen-free flame-retardant modified hydrocarbon resin and preparation method thereof

Abstract

The invention discloses a halogen-free flame-retardant modified hydrocarbon resin and a preparation method thereof. Remove part of the solvent to obtain halogen-free flame-retardant modified hydrocarbon resin; the specific method is: mix hydrocarbon resin, double bond-containing phosphate flame retardant and solvent to obtain liquid material A; mix initiator and solvent to obtain liquid material B: Connect liquid material A and liquid material B into a microchannel reactor with a temperature of 70°C to 150°C through two feed pipes, and the liquid materials are mixed and reacted in the microchannel reactor, and then enter the cooling tube to cool and discharge, and put into a vacuum tank to extract part of the solvent to obtain a halogen-free flame-retardant modified hydrocarbon resin. The halogen-free flame-retardant modified hydrocarbon resin of the present invention has the characteristics of uniform molecular weight distribution, high phosphorus content, high vinyl content, halogen-free high-efficiency flame retardancy, etc., and is suitable for use as a raw material for high-frequency high-speed copper-clad laminates.

Description

technical field [0001] The invention belongs to the halogen-free flame-retardant modification of organic compound hydrocarbon resin and its preparation, and relates to a halogen-free flame-retardant modified hydrocarbon resin and a preparation method thereof. The halogen-free flame-retardant modified hydrocarbon resin of the invention has a molecular weight distribution Uniformity, high phosphorus content, high vinyl content, halogen-free and high-efficiency flame-retardant characteristics, especially suitable for high-frequency high-speed copper clad laminates. Background technique [0002] The vision of 5G is to provide information at your fingertips and connect everything at your fingertips. The essence of its technology is the interconnection of everything with ultra-low latency. The time delay is shortened from the original 70ms to 1ms, which requires the copper clad laminate as the base material and its raw materials to have low dielectric constant, low dielectric loss...

AI Technical Summary

Problems solved by technology

However, the use of brominated flame retardants will release highly corrosive hydrogen bromide gas during combustion, which will cause harm to human health and the ecological environment.

Although the use of phosphorus-containing and nitrogen-containing flame retardants is relatively friendly to the environment, they are basically additive types, which have poor compatibility with the substrate, which will affect the electrical and mechanical properties of the board, and the flame retardant effect is poor, Problems such as easy migration and serious droplet phenomenon

In addition, although the allylphenoxycyclotriphosphazene or vinylphenoxycyclotriphosphazene mentioned in the patent CN102977551A can be used as a reactive flame retardant to react with hydrocarbon resins, but due to the phenoxycyclotriphosphazene The nitrile group has a large volume hindrance, and only a small part of the flame retardants form polymers through the reaction of double bonds with hydrocarbon resins to achieve the purpose of flame retardancy. The double bonds of most flame retardants fail to combine with hydrocarbon resins. The resin reacts and eventually becomes an additive flame retardant, which will also lead to a decrease in the mechanical properties of the sheet, high dielectric constant and dielectric loss, and unstable flame retardant effect

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