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A kind of preparation method of fiber-reinforced low-viscosity polyethersulfone resin

A polyethersulfone resin and fiber-reinforced technology, which is applied in the field of preparation of fiber-reinforced low-viscosity polyethersulfone resin, can solve the problems of low light transmittance of polyethersulfone, decreased resin impact strength, and influence of resin light transmittance, etc. , to achieve excellent effect, decrease melt viscosity and improve rigidity

Active Publication Date: 2018-05-29
JIANGMEN YOUJU NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 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 light transmittance of polyethersulfone synthesized by this method is not high, which is mainly limited to the fields of coatings and microelectronic devices

Method used

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  • A kind of preparation method of fiber-reinforced low-viscosity polyethersulfone resin
  • A kind of preparation method of fiber-reinforced low-viscosity polyethersulfone resin
  • A kind of preparation method of fiber-reinforced low-viscosity polyethersulfone resin

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Experimental program
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Effect test

Embodiment 1

[0032] In the reaction kettle protected by inert gas, after adding the sulfolane solvent, start stirring and raise the temperature to 60°C~80°C, add bisphenol S, 4,4'-dichlorodiphenylsulfone monomer in sequence, and after the monomers are completely dissolved, Then add the salt-forming agent, the amount of the salt-forming agent is 1.05-1.2 times the molar amount of bisphenol S, then add the water-separating agent, continue to stir and heat up to 170°C-190°C, and the salt-forming reaction takes 1-2 hours; the salt-forming reaction After completion, steam all the liquid, then raise the temperature to 200-250°C, start stirring at a stirring speed of 50-70 rpm, keep the temperature for 1-2 hours, increase the stirring speed to 70-90 rpm, continue Keep the temperature constant for 4-5 hours, then add aromatic polyphenols, the molar weight of aromatic polyphenols is 0.1%-5% of bisphenol S molar weight, continue to react for 40 minutes, until the set viscosity is reached, polymerized...

Embodiment 2

[0036] Same as Example 1, except that carbon fiber is used instead of glass fiber, other conditions are the same, and the test results are shown in the table below.

Embodiment 3

[0038] Same as Example 1, except that aramid fibers are used instead of glass fibers, other conditions are the same, and the test results are shown in the table below.

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Abstract

The invention discloses a method for preparing a fiber-reinforced low-viscosity polyethersulfone resin. The low-viscosity polyethersulfone resin is firstly prepared from monomers such as bisphenol S, 4,4'-dichlorodiphenylsulfone, and aromatic polyphenols. , and then modify it with fiber, the ratio of each component during modification is: low-viscosity polyethersulfone resin: 50-90%; fiber: 10%-50%; auxiliary agent 0.1%-5%. The fiber-reinforced low-viscosity polyethersulfone resin prepared by the invention not only has good fluidity and heat resistance, but also greatly improves mechanical properties such as tensile strength, bending strength and toughness after strengthening, and other excellent properties remain unchanged.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a preparation method of fiber-reinforced low-viscosity polyethersulfone resin (PES). Background technique [0002] Polysulfone is a thermoplastic special engineering plastic. Because its molecular chain has the rigidity of benzene ring, the flexibility of ether group and the large conjugated system formed by sulfone group and the whole structural unit, it has high strength, flame resistance and fire resistance. With the characteristics of radiation resistance, acid resistance, oxidation resistance, solvent resistance, biocompatibility, physical and mechanical properties and excellent insulation properties, it is a polymer material with excellent comprehensive properties and has been widely used in many fields. However, polysulfone resin has a high melting point and high melt viscosity, which is not conducive to processing and forming, making it difficult to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L81/06C08L77/10C08K7/14C08K7/06C08G75/23
Inventor 王贤文
Owner JIANGMEN YOUJU NEW MATERIALS