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Research on Industrial Experiment of Heat-resistant Modifier N-phenylmaleimide

Author: HeChun
Tutor: HeZhiMin；WangFuShan
School: Tianjin University
Course: Chemical Engineering
Keywords: Heat - resistant modifiers N-phenyl maleimide Synthesis Industrial Experiment
CLC: TQ246.31
Type: Master's thesis
Year: 2007
Downloads: 116
Quote: 0
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Abstract


This article analyzed and compared by the ease of synthesis of heat- modifier N-phenyl maleimide synthesis route industrialized and actual production , the final choice to aniline and maleic anhydride as raw materials in the catalyst , a very solvents under a two-step synthesis of N- phenyl maleimide process route . This paper summarizes a small test , synthetic pilot study of the experimental process , optimizing the industrial synthesis of N- phenyl maleimide experimental conditions , the effects of the solvent type and amount , amount of catalyst , the amount of polar solvent , the reaction time affect the of feedstock recycling return on product yield and quality , and ultimately to determine the optimum process conditions and product yield of 93% , the melting point of 88.5 ° C , liquid chromatography analysis of product purity more than 98% , the product quality Japanese catalyst company quite . Application experiments show that : the industrial experiment production of N-phenyl maleimide with Japan sample compared to reaction and SAN is in good condition , the reaction speed is normal , low yellow index , better than Japan sample . Made of heat - resistant resin has a Vicat softening point, tensile strength , static bending strength , melt index and Japan sample close . N-phenyl maleimide and styrene copolymer has greatly improved thermal performance of PVC , the加入后维卡softening point significantly increased . Add N-phenyl maleimide or N-phenyl maleimide and styrene copolymer SAN, ABS , and PVC heat - resistant modified , the Vicat heat resistant temperature of the resin is significantly improved, the tensile modulus the amount and increase in the breaking strength , can become the resin processed more ideal heat modifier .

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CLC: > Industrial Technology > Chemical Industry > Basic Organic Chemistry Industry > The production of aromatic compounds > Aromatic nitrogen compounds > Aromatic amines and their derivatives > Aromatic amines
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