Soluble and ultraviolet crosslinking polyaryl ether nitrile and preparation method thereof
A polyarylether nitrile and cross-linking technology, which is applied in the field of polymer materials, can solve the problems of poor solvent resistance and stress crack resistance, and achieve the effects of simple control method, high heat resistance, and increased use temperature
Inactive Publication Date: 2012-07-11
吉林省聚科高新材料有限公司
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Problems solved by technology
However, the solvent resistance and stress cracking resistance of polyarylether nitrile are poor, and the method of thermally crosslinking the polar nitrile group is usually used to obtain a network structure with higher heat resistance to solve this shortcoming
Method used
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Embodiment 1 to Embodiment 3
[0014] (1) embodiment 1 to embodiment 3 polymer structural formula
[0015]
Embodiment 4 to Embodiment 6
[0016] (II) embodiment 4 to embodiment 6 polymer structural formula
[0017]
Embodiment 7 to Embodiment 9
[0018] (III) Embodiment 7 to embodiment 9 polymer structural formula
[0019] The polymerization process of soluble ultraviolet crosslinking polyarylether nitrile is as follows: at room temperature, difluoro monomer and bisphenol monomer are added into the three-necked bottle with mechanical stirring and water separator according to the molar ratio of 1 to 1.02:1. Among them, sulfolane is used as a solvent, the solid content in the reaction system is 20-35%, xylene is used as a dehydrating agent, and anhydrous potassium carbonate or sodium carbonate catalyst with 1.05-1.15 times the molar number of bisphenol is added. Stir and heat up to 145-160°C to react for 2-4 hours, and continuously release the water generated by the reaction, then raise the reaction temperature to 180-210°C to continue the reaction for 3-6 hours, and distill off the remaining xylene in the reaction system. The polymer product is dispersed in water at room temperature, the crude product is pulverized, was...
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The invention relates to soluble and ultraviolet crosslinking polyaryl ether nitrile and a preparation method thereof, and belongs to the field of high molecular materials. The preparation method comprises the following steps of: selecting 4,4'-dyhydroxyl chalcone, 2,2'-diallyl bisphenol A and 2'-allyl phenyl-2,6-difluoro benzoic acid which contain allyl and vinyl structure bisphenol and difluoro monomer compounds as crosslinking points, wherein the content of the crosslinking points is controlled to be 5 to 40 percent; performing temperature control reaction at the temperature of between 145 and 165 DEG C and between 180 and 210 DEG C for 2 to 4 hours and 3 to 6 hours respectively by taking sulfolane or N-methyl pyrrolidone or dimethyl sulfoxide or N,N-dimethylacetylamide as a solvent, potassium carbonate or sodium carbonate as a catalyst and methylbenzene or dimethylbenzene as a dehydrating agent, crushing, washing for 6 to 8 times by using ethanol and water to remove organic small molecules, the organic solvent and inorganic salt, wherein the using amount of the dehydrating agent is 20 to 30 percent that of the solvent; and drying at the temperature of between 100 and 120 DEG C for 10 to 12 hours. The invention has the advantages that the high molecular materials are irradiated without damage, high efficiency and energy conservation are realized, residual toxicity and wastes are avoided, and a control method is convenient, so the soluble and ultraviolet crosslinking polyaryl ether nitrile is suitable for large-scale industrial production.
Description
technical field [0001] The invention belongs to the technical field of polymer materials. Background technique [0002] Polyarylether nitrile is a kind of linear aromatic ring polymer with special molecular structure. Its macromolecular main chain is composed of rigid and heat-resistant phenylene, flexible and heat-resistant oxygen ether bonds and strong polar nitrile Composition of basal and side groups. Oxygen-ether bonds endow polyarylether nitrile molecular chains with good flexibility and ease of processing. The presence of nitrile side groups not only helps to improve the solubility of polymers, but also enhances the interaction between polymer molecular chains, leading to polymerization. The energy required for the movement of the chain segments increases, improving the heat resistance of the polymer, and the nitrile group can improve the flame retardancy of the polymer. In addition, the reaction of the active functional group of the nitrile group can also be used f...
Claims
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IPC IPC(8): C08G65/40
Inventor 白迪
Owner 吉林省聚科高新材料有限公司