A kind of industrial synthesis method of branched high-strength polysulfone resin

A technology of polysulfone resin and synthesis method, which is applied in the field of industrial high-pressure synthesis of high-strength polysulfone resin, can solve the problems of inability to completely remove benzene-based water-separating agents, deep resin color, and low light transmittance, and achieve improved toughness, Improve productivity and break application limitations

Active Publication Date: 2017-12-26
GUANGDONG YOUJU ADVANCED MATERIAL RES CO LTD
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Problems solved by technology

[0004] 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. However, the polyethersulfone synthesized by this method cannot completely remove the benzene water-separating agent in the post-treatment process, resulting in a darker resin color and low 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

Method used

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  • A kind of industrial synthesis method of branched high-strength polysulfone resin

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Experimental program
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Embodiment 1

[0028] In a 300-liter stainless steel reaction kettle equipped with a nitrogen pipe, a condensing water separator and a high-efficiency stirrer, add 35.0kg of 4,4'-dichlorodiphenyl sulfone, 29.5kg of bisphenol A, and 14.0kg of sodium carbonate in sequence, and then add 100.00kg N,N'-dimethylacetamide. After pumping air to reduce the pressure inside the kettle to -0.09MPa, introduce nitrogen to raise the pressure inside the kettle to 0.01MPa, repeat this process five times to vacuumize and introduce nitrogen to replace the air in the kettle, and finally introduce nitrogen to reduce the pressure in the kettle to 0.01MPa. The pressure was raised to 2.0MPa. Heat to make the temperature in the kettle reach 170°C and form salt at constant temperature for 1 hour, then raise the temperature to 200°C for constant temperature polymerization for 3 hours, then add 288g of methyldichlorosilane to the system, increase the stirring speed to 70-90 rpm, and continue to keep constant temperatur...

Embodiment 2

[0032] Same as implementation case 1, except that the pressure inside the kettle is 3MPa, and 288g of methyldichlorosilane is replaced by 790g of phenoxy titanium trichloride, other conditions are the same.

[0033] The resulting high-strength polysulfone (PSU) resin MI=15.0g / 10min (343.0°C, 2.16kg), impact strength 10.9kJ / m -2 , thermal deformation: 195°C

Embodiment 3

[0035] In a 300-liter stainless steel reaction kettle equipped with a nitrogen pipe, a condensing water separator and a high-efficiency stirrer, 35.0kg of 4,4'-dichlorodiphenyl sulfone, 32.32kg of bisphenol S, 14.0kg of sodium carbonate were added in sequence, and then 100.00kg N,N'-dimethylformamide. After pumping air to reduce the pressure inside the kettle to -0.09MPa, introduce nitrogen to raise the pressure inside the kettle to 0.01MPa, repeat this process five times to vacuumize and introduce nitrogen to replace the air in the kettle, and finally introduce nitrogen to reduce the pressure in the kettle to 0.01MPa. The pressure was raised to 3.0MPa. Heat to make the temperature in the kettle reach 200°C to form salt at constant temperature for 1 hour, then raise the temperature to 240°C for constant temperature polymerization for 3 hours, then add 488g of ethoxy titanium trichloride to the system, increase the stirring speed to 70-90 rpm, Continue to keep the temperature ...

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Abstract

The invention discloses an industrial synthesis method of branched high-strength polysulfone resin. In the present invention, by controlling the ratio of dichloride and bisphenol monomers, at first, a hydroxyl-terminated polysulfone oligomer is synthesized, and further, the hydroxyl-terminated polysulfone is lowered by a dichloro substitute, a trichloro substitute or a tetrachloro substitute. The high-strength polysulfone resin is prepared by adding low-molecular-weight organic substances containing carbon, silicon, and titanium to the polymer, which not only retains the excellent performance of the original polysulfone resin, but also greatly improves the impact strength and toughness, breaking the application limitations and greatly expanded its field of application.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to an industrial high-pressure synthesis method of high-strength polysulfone resin containing carbon, silicon and titanium chain extenders. 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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/48C08G65/40C08G65/46
Inventor 王贤文
Owner GUANGDONG YOUJU ADVANCED MATERIAL RES CO LTD
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