Preparation method of high-performance modified polysulfone resin

Abstract

The invention discloses a preparation method of high-performance modified polysulfone resin. Monomers such as bisphenol A, 4,4'-dichlorodiphenyl sulfone and chain extender are used for preparing polysulfone resin, and then modification is conducted on the polysulfone resin through fibers, wherein when modification is conducted, a mixture comprises the components of 50%-90% of the polysulfone resin, 10%-50% of the fibers and 0.1%-5% of auxiliaries. According to the prepared high-performance modified polysulfone resin, the heat resistance is good, mechanical properties such as the stretching strength, the tensile strength, the tensile strength and the impact toughness can all be greatly improved after modification, and other excellent properties are kept constant.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a preparation method of high-performance modified polysulfone resin (PSU). Background technique [0002] Polysulfone is a kind of thermoplastic engineering plastics. Because of their excellent comprehensive properties such as heat resistance, hot water resistance, creep resistance, dimensional stability, impact resistance, chemical resistance, non-toxicity and flame retardancy, so It has been widely used in the fields of electronics, electrical appliances, machinery, automobiles, medical appliances, food processing and non-stick coatings for a long time. However, since the processing temperature of polysulfone generally exceeds 300°C, the defects in its own structure often lead to partial decomposition of the resin during the processing process, followed by a decrease in mechanical properties and a reduction in the pass rate of the product. Research on enha...

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Problems solved by technology

[0004] At present, the most commonly used method is to modify additives by blending. Chinese patent document CN102532899A discloses a physical method of adding titanium dioxide and glass fiber to polyethersulfone and using mechanical blending to improve its bonding performance and compatibility. Comprehensive mechanical properties, but titanium dioxide will have a certain impact on the light transmittance of the resin and significantly reduce the impact strength of the resin

Chinese patent document CN102532899A discloses organosiloxane polyethersulfone resins containing linear and cage-type main chains and a preparation method thereof. By introducing functional molecular structures into the main chain of polyethersulfone, the polyethersulfone hydrophobicity and mediation properties are improved. electrical constant, but the polyethersulfone synthesized by this method has a darker color and lower light transmittance, which is mainly limited to the fields of coatings and microelectronic devices

Chinese patent document CN102504271A discloses a preparation method of hyperbranched polyester modified silicone resin, which combines the advantages of hydroxyl-terminated hyperbranched polyester and silicone resin, and significantly improves the mechanical properties and durability of silicone resin. Chemical performance and water resistance, but poor flexibility, it will crack under high and low temperature alternating conditions, which limits its application

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