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Aromatic sulfone polymer, glass fiber reinforced composite material and preparation method thereof

A polymer and aromatic sulfone technology, applied in the field of aromatic sulfone polymers, glass fiber reinforced composite materials and their preparation, can solve the problem of high processing temperature, loss of active groups, inability to obtain wettability and excellent surface adhesion Fiber-reinforced composite materials and other issues, to achieve excellent tensile strength and bending strength, the effect of improving mechanical properties

Pending Publication Date: 2021-05-14
KINGFA SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the smooth fiber surface, high inertia, and low surface energy, the wettability and cohesion of the fiber surface are low, and it is difficult to efficiently compound with traditional thermoplastic polymer materials to form high-strength, high-modulus fiber composites.
At the same time, due to the high processing temperature of aromatic sulfone polymers (such as polyphenylsulfone PPSU, processing temperature ~ 350 ° C), the active groups obtained by the treatment of fibers will decompose at high temperatures and lose a lot
Researchers in this field usually improve the interaction with the resin substrate by screening fibers containing polyhydroxyl groups or adding coupling agents (CN102965928A), thereby improving mechanical properties, but due to relatively high processing temperatures, still Due to the loss of more functional groups, there are fewer interaction points between the two and the interaction is still weak. Fiber-reinforced composite materials with good wettability and excellent surface adhesion cannot be obtained, and cannot meet the requirements of high strength and high modulus.
At the same time, under the premise of not changing the main chain structure of aromatic sulfone resin and adding additives such as coupling agents to improve adhesion, there are few reports on improving the interaction between resin and fiber to obtain high-strength and high-modulus aromatic sulfone fiber composites.

Method used

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  • Aromatic sulfone polymer, glass fiber reinforced composite material and preparation method thereof
  • Aromatic sulfone polymer, glass fiber reinforced composite material and preparation method thereof
  • Aromatic sulfone polymer, glass fiber reinforced composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5 and comparative example 1～2

[0065] This embodiment and comparative examples provide a series of polyphenylsulfone polymers and glass fiber reinforced composite materials prepared from polyphenylsulfone polymers. Wherein, the preparation process of embodiment 1~4 and comparative example 1~3 is as follows:

[0066] (1) Quantitatively add 36kg sulfolane, 8.787kg (30.6 mol) 4,4'-dichlorodiphenyl sulfone and 5.586kg 4,4'-biphenyldiphenol into a 100L reaction kettle protected by high-purity nitrogen, stir to heat up and Add 33kg (31.1mol) of sodium carbonate and 3kg of xylene, adopt the solution polycondensation method, keep at 180-220°C for 5 hours, during the reaction process, the xylene will continuously discharge the reaction water through azeotropy until no water is discharged, and the salt-forming reaction At the end, the xylene was distilled off. Afterwards, the temperature of the reaction system was raised to 235° C. and kept for 1.5 h. 10kg of sulfolane was added to the system, the temperature was k...

Embodiment 5 and comparative example 3～4

[0070] The examples and comparative examples provide a series of glass fiber reinforced composite materials.

[0071] Wherein, for the glass fiber reinforced composite material provided in Example 5, the polyphenylsulfone polymer is prepared by the same method as in Example 1, and the obtained polyphenylsulfone polymer, glass fiber and antioxidant are defined as polyphenylsulfone polymer: glass fiber : Antioxidant P-EPQ=94.99:5:0.01 blending, extruding in a twin-screw extruder at an extrusion temperature of 350° C. and a rotational speed of 300 rpm to obtain a glass fiber reinforced composite material.

[0072] The glass fiber-reinforced composite material provided by comparative examples 3 and 4 is prepared by the same method as comparative example 1 and comparative example 2 to obtain polyphenylsulfone polymers respectively, and the obtained polyphenylsulfone polymers, glass fibers and antioxidants are prepared by polyphenylsulfone Polymer: glass fiber: antioxidant P-EPQ = 9...

Embodiment 6 and comparative example 5～6

[0074] The examples and comparative examples provide a series of glass fiber reinforced composite materials.

[0075] Wherein, for the glass fiber reinforced composite material provided in Example 6, the polyphenylsulfone polymer is prepared by the same method as in Example 1, and the obtained polyphenylsulfone polymer, glass fiber and antioxidant are divided into polyphenylsulfone polymer: glass fiber : Antioxidant P-EPQ=59.8:40:0.2 parts blended, extruded in a twin-screw extruder at an extrusion temperature of 350° C. and a rotational speed of 300 rpm to obtain a glass fiber reinforced composite material.

[0076] The glass fiber reinforced composite material that comparative example 5 and 6 provides, obtains the polyphenylsulfone polymer by the same method of comparative example 1 and comparative example 2 respectively, the polyphenylsulfone polymer of gained, glass fiber and antioxidant press polyphenylsulfone Polymer: glass fiber: antioxidant P-EPQ=59.8:40:0.2 parts blend...

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Abstract

The invention relates to an aromatic sulfone polymer, a glass fiber reinforced composite material and a preparation method thereof. The phenol end group content of the aromatic sulfone polymer is 80-160 mol / t. Research finds that the phenol end group content of the aromatic sulfone polymer has great influence on the mechanical property of the aromatic sulfone fiber composite material, the aromatic sulfone polymer has strong interaction force (such as hydrogen-bond interaction with hydroxyl on the surface of the fiber) with glass fibers by regulating and controlling the phenol end group content, the tensile strength and bending strength of the obtained glass fiber reinforced composite material are obviously improved, and the mechanical property is obviously improved.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to an aromatic sulfone polymer, a glass fiber reinforced composite material and a preparation method thereof. Background technique [0002] Aromatic sulfone polymers are special engineering plastics with high temperature resistance and excellent mechanical properties. They also have excellent properties such as chemical corrosion resistance, excellent electrical properties, and dimensional stability. They are widely used in aerospace, medical, food and other fields. In order to further improve the mechanical properties of such materials and meet the demand for high-strength and high-modulus materials in the fields of aircraft, automobiles, and machinery, the development and optimization of the preparation technology of aromatic sulfone fiber-reinforced composite materials has become a research hotspot. However, due to the smooth surface, high inertia and low su...

Claims

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Application Information

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IPC IPC(8): C08G75/20C08L81/06C08K7/14
CPCC08G75/20C08K7/14
Inventor 高红军王道波张登黄险波叶南飚孙学科陈锐斌杨硕姜苏俊曹民
Owner KINGFA SCI & TECH CO LTD