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Color-changing aromatic thioether compound and preparation method thereof

A polyarylene sulfide and compound technology, which is applied in the field of high molecular weight aromatic heterosulfur-containing color-changing polyarylene sulfide compounds and their preparation, can solve the problems of complex processing technology, unstable interface, fading and the like

Inactive Publication Date: 2014-01-08
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The improved products generally have stronger toughness and increased impact resistance, and some have a certain color after processing, but generally the interface of polyarylene sulfide composite materials with color after intermixing processing is unstable, and phase separation will occur for a long time and pigment oozing, the service life is short, easy to fade, and the processing technology is complicated, the cost is relatively high

Method used

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  • Color-changing aromatic thioether compound and preparation method thereof
  • Color-changing aromatic thioether compound and preparation method thereof
  • Color-changing aromatic thioether compound and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Add 150ml of N-methyl-2-pyrrolidone (NMP), 0.6g of NaOH (0.015mol), 39g of sodium sulfide (0.3mol) into a 500ml reactor, heat to 180°C, distill 15.6ml (0.87mol) of water, and complete the first step One stage; add 43.69g (0.297mol) of p-dichlorobenzene and reduce golden RK [ie (Ar 1 -4)Br 2 ]1.47g (0.003mol), react at 220°C for 3 hours, the second stage reaction is completed; then raise the temperature to 260°C, add lithium chloride 1.3g (0.03mol) to react for 3 hours, the third stage is completed; cool to 150°C Slowly add deionized water, filter, wash, and dry at 110°C for 18 hours to obtain 31.2g of yellow product, yield: 94.1%, melting point Tm: 286°C, thermal decomposition temperature Td: 480°C, tensile strength: 71.5MP , modulus of elasticity: 2.85GPa, melt index: 308g / 10min, intrinsic viscosity η sp : 0.274, molecular weight: 46,700, green and light green in 98% and 80% concentrated sulfuric acid respectively.

[0036] Functional transformation: yellow-green-li...

Embodiment 2

[0040] The operation is the same as in Example 1, wherein 43.25 g (0.294 mol) of p-dichlorobenzene is used as the reaction solvent to reduce golden RK [i.e. (Ar 1 -4)Br 2 ] The dosage is 2.94g (0.006mol). The product has a color changing function.

Embodiment 3

[0042] The operation is the same as in Example 1, wherein 41.92 g (0.285 mol) of p-dichlorobenzene is used as the reaction solvent to reduce golden RK [i.e. (Ar 1 -4)Br 2 ] The dosage is 7.35g (0.015mol), and 1g of sodium acetate is added as a pH buffer. The product has a color changing function.

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Abstract

The invention relates to a color-changing aromatic thioether compound and the preparation method thereof. The structure of the compound is shown in formula (I), the weight average molecular weight ranges from 35000 to 67000, and the melt index is 60-90 g / 10min. The preparation method comprises the steps as follows: polyhalogenated polycyclic compound (Ar1'), polyhalogen aromatic hydrocarbon and sulfur source are used as raw materials, polar aprotic organic solvent is used as a reaction medium, and the compound is obtained through a polymerization reaction at the temperature of 160-350 DEG C and under the pressure of 0.5-15 Kg / cm2 in the alkaling condition required by reaction auxiliaries and removing hydrogen sulfide. The compound can be white, brown, red, blue or in other colors. The compound has the advantages that the thermal stability is high, the toughness and the strength are good, the color of the processed compound is bright, and the color of the compound can change with different pH values, thereby meeting engineering, electronics, automobiles and other purposes.

Description

technical field [0001] The invention relates to a class of high-molecular-weight aromatic heterosulfur-containing color-changing polyarylene sulfide compounds and a preparation method thereof. Background technique [0002] Polyarylene sulfide, such as polyphenylene sulfide (PPS), polyphenylene sulfide ketone (PPSK), polyphenylene sulfide sulfone (PPSF), etc., due to its high temperature resistance, chemical corrosion resistance, excellent electrical properties, radiation resistance, difficult Combustible, high mechanical strength, stable size and other characteristics, can be used as coatings, plastics, structural materials, adhesives, fibers and films, widely used in automobiles, aerospace, petrochemical, light industrial machinery, electronics, food and engineering technology. In particular, the global production of polyphenylene sulfide (PPS) has exceeded 50,000 tons, and it has also played an increasingly important role in my country's national defense and civilian faci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G75/02C09K9/02C08G75/0209C08G75/024C08G75/0254C08G75/0259C08G75/0263C08G75/23
Inventor 严永刚任浩浩杨杰张刚龙盛如王孝军
Owner SICHUAN UNIV