Modified polyphenylene sulfide and preparation method thereof

A polyphenylene sulfide, modification technology, applied in the field of modified polyphenylene sulfide and its preparation, can solve the problems of restricting development and application, poor friction reduction and wear resistance, wear and tear, etc., and achieve remarkable friction reduction and wear resistance , good temperature resistance, the effect of improving strength and temperature resistance

Pending Publication Date: 2022-08-02
兰州中科聚润新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the anti-friction and wear resistance of pure PPS is poor, and it can withstand 260°C in a short period of time.
When the PPS insulating coil support is used as the skeleton of the voice coil motor positioning system, due to the long-term high temperature condition of 260 ° C, severe wear and even failure occur, which restricts the development and application of this material product

Method used

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  • Modified polyphenylene sulfide and preparation method thereof
  • Modified polyphenylene sulfide and preparation method thereof
  • Modified polyphenylene sulfide and preparation method thereof

Examples

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preparation example Construction

[0039] The preparation method of modified polyphenylene sulfide of the present invention is as follows:

[0040] 1. Preparation of ZIF-8 / BN:

[0041] Add 80-120mL of a mixed solution of organic solvent (the organic solvent is isopropanol, methanol or ethanol) and deionized water (the volume ratio of organic solvent and deionized water is 1:1-2:3) into the container , add 2-4g BN powder during stirring, mix well and then ultrasonicate for 3-6h. Then, the above solution was centrifuged in a 6000 rpm centrifuge, and the upper layer solution was taken and lyophilized to obtain BN nanosheets with a two-dimensional layered structure.

[0042] The ultrasonic vibration wave can destroy the weak van der Waals force between the BN layers, thus playing the role of mechanical peeling.

[0043] The exfoliated BN was dispersed in the mixed solution. After exfoliation, the smaller flakes will be suspended in the upper layer of the solution, and the incompletely exfoliated BN will be depos...

Embodiment 1

[0054] The preparation method of the modified polyphenylene sulfide of the present embodiment is as follows:

[0055] 1. Preparation of ZIF-8 / BN:

[0056] Add 100 mL of a mixed solution of isopropanol and deionized water (the volume ratio of isopropanol to deionized water is 2:3) into the container, add 3 g of BN powder while stirring, and sonicate for 4 hours after mixing. Then the above solution is centrifuged in a 6000rpm centrifuge, and the upper layer solution is taken for freeze-drying to obtain BN nanosheets with a two-dimensional layered structure, such as figure 1 shown.

[0057] figure 1 The SEM image of the BN nanosheets prepared in Example 1 of the present application.

[0058] Disperse 0.21g of BN nanosheets in 100mL of methanol, take 5g of zinc nitrate hexahydrate and add it to the methanol dispersed with BN nanosheets, then add 3.5g of 2-methylimidazole, let stand at room temperature for 24h, then centrifugally wash and freeze Dry to obtain a ZIF-8 / BN white ...

Embodiment 2

[0065] The difference between this embodiment and Embodiment 1 is:

[0066] The mass ratio of PPS pellets, GF, and ZIF-8 / BN was 57:40:3.

[0067] The remaining steps and parameters are the same as in Example 1.

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Abstract

The invention provides a preparation method of modified polyphenylene sulfide, which comprises the following steps: preparing ZIF-8 / BN: adding boron nitride into a mixed solution of an organic solvent and water, uniformly mixing, ultrasonically and centrifugally taking an upper solution, and freeze-drying to obtain a boron nitride nanosheet; the preparation method comprises the following steps: dispersing boron nitride nanosheets in methanol, adding zinc nitrate hexahydrate and 2-methylimidazole, and standing at room temperature to obtain ZIF-8 / BN; preparing modified polyphenylene sulfide: mixing polyphenylene sulfide, glass fiber and ZIF-8 / BN, and then extruding and granulating; the mass ratio of the polyphenylene sulfide to the glass fibers to the ZIF-8 / BN is (55 to 80): (10 to 40): (1 to 5). The ZIF-8 modified BN and the glass fibers are used for synergistically modifying the polyphenylene sulfide, so that the strength and the temperature resistance of the polyphenylene sulfide are improved, and the polyphenylene sulfide has a longer service life in a high-temperature environment, and can be used for preparing the coil framework of the voice coil motor.

Description

technical field [0001] The invention relates to a modified polyphenylene sulfide and a preparation method thereof. Background technique [0002] Polyphenylene sulfide (PPS) has excellent properties such as low density, high mechanical strength, good thermal stability, and excellent electrical properties. As a structural polymer material, it is widely used in electronic, electrical, aerospace and other fields. high. Polyphenylene sulfide (PPS) is widely used in precision positioning systems as insulating coil brackets as the skeleton material of voice coil motors. However, pure PPS has poor anti-friction and wear resistance, and can withstand 260 ℃ in the short term. When the PPS insulating coil bracket is used as the skeleton in the positioning of the voice coil motor, due to the long-term high temperature condition of 260 °C, serious wear and even failure occurs, which restricts the development and application of this material product. SUMMARY OF THE INVENTION [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L81/02C08K7/14C08K9/04C08K3/38C08J5/04H02K15/14
CPCC08K7/14C08K9/08C08K3/38C08J5/043H02K15/14C08L2201/08C08K2003/385C08K2201/011C08J2381/02C08L81/02
Inventor 王廷梅谢海张海军
Owner 兰州中科聚润新材料有限公司
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