Catalyst dropwise adding system for alkaline phenolic resin synthesis

Abstract

The invention discloses a catalyst dropwise adding system for alkaline phenolic resin synthesis. The catalyst dropwise adding system comprises a reaction main body, a working motor, a pH value detector and an electric control valve, the working motor is mounted above the reaction main body; the PH value detector is arranged on the outer side of the lower part of the reaction main body; a feeding port is formed in the upper part of the left side of the reaction main body; and a rotary cylinder is arranged at the joint of the feeding port and the reaction main body, a catalyst pipeline is connected to the upper portion of the reaction main body, the electric control valve is connected to the periphery of the catalyst pipeline, a control knob is arranged outside the right side of the reactionmain body, and a speed limiting piece is arranged in a catalyst storage pipe. According to the catalyst dropwise adding system for alkaline phenolic resin synthesis, the PH value detector can effectively reflect the reaction process in the reaction main body, so that the adding speed of a catalyst is effectively controlled, and the volume of reaction raw materials entering the reaction main bodycan be controlled through the arrangement of the feeding port and a baffle.

Description

technical field [0001] The invention relates to the technical field of phenolic resins, in particular to a catalyst dropping system for synthesizing basic phenolic resins. Background technique [0002] Phenolic resin, also known as bakelite, is a chemical product obtained by polycondensation of phenolic aldehyde or its derivatives. Phenolic resin has a high carbon content and can be used as an ablation-resistant material, and phenolic resin has excellent heat resistance and corrosion resistance. It has good water resistance and stable external state, and can be used as paint raw materials, adhesives, bakelite or various composite materials. [0003] The synthesis process of phenolic resin usually requires external heating, and a basic catalyst is dropped into the reaction raw material to complete the catalytic reaction. The basic catalyst can artificially control the degree of reaction of the polycondensation reaction, thereby obtaining phenolic resins in different reaction ...

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Problems solved by technology

[0004] The object of the present invention is to provide a kind of catalyst dripping system for the synthesis of alkaline phenolic resin, to solve the problem that the conventional phenolic resin catalytic reaction tank proposed in the above-mentioned background technology cannot accurately reflect the reaction process inside the tank body; it cannot be conveniently controlled The specific amount of reaction raw materials put into the reaction tank

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