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Low-flash high-toughness good-surface polyphenylene sulfide composition as well as preparation method and application thereof

A technology of polyphenylene sulfide and composition, which is applied in the field of low flash, high toughness and good surface polyphenylene sulfide composition and its preparation, which can solve the problems of poor material surface gloss, reduced acid resistance, and large filling amount. , to achieve good appearance and surface properties, low flash, high impact strength

Pending Publication Date: 2022-05-24
KINGFA SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large filling amount of glass fiber and mineral powder, the surface gloss of the material is not good, and the acid resistance of PPS is reduced after adding glass fiber, which cannot meet the requirements in some fields

Method used

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  • Low-flash high-toughness good-surface polyphenylene sulfide composition as well as preparation method and application thereof
  • Low-flash high-toughness good-surface polyphenylene sulfide composition as well as preparation method and application thereof
  • Low-flash high-toughness good-surface polyphenylene sulfide composition as well as preparation method and application thereof

Examples

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Effect test

preparation example Construction

[0037] The present invention also provides the preparation method of the low-flash and high-toughness non-reinforced polyphenylene sulfide composition, which comprises the following steps: weighing each component by weight, mixing and dispersing each component by a high-speed mixer, and obtaining compound, and then pass the compound through a twin-screw extruder to obtain the polyphenylene sulfide composition.

[0038] In the present invention, the polyphenylene sulfide resin with low power law index is selected, and the interaction between the coupling agent and the reactive toughening agent is optimized. The high value makes it difficult to form flash during the pressure holding stage. At the same time, the PPS with a low power law index indicates that the pseudoplasticity of the material is stronger, and the viscosity changes greatly with the shear rate, so that the high shear viscosity of the material is conducive to mold filling. The optimization results in a low flash, hig...

Embodiment

[0040] The preparation method of the low flash high toughness non-reinforced polyphenylene sulfide composition of the present embodiment, the steps are as follows:

[0041] Weigh polyphenylene sulfide (one or two different brands), toughening agent (brand PTW), silane coupling agent (brand JH-A110), antioxidant (brand 1010, 168) by weight, First, the polyphenylene sulfide resin, coupling agent, toughening agent, antioxidant, and other additives are dispersed in a high-speed mixer according to the formula ratio, and then the mixture is passed through a twin-screw extruder; wherein, the extrusion process is: The rotating speed is 400rpm, the feeding is 450kg / h; the extrusion temperature is 280℃-290℃.

[0042] Two, the test standard used in the present invention is as follows:

[0043] (1) Izod unnotched impact strength: Tested according to standard ISO 180-2019.

[0044] (2) Flash size evaluation: use the flash assessment mold, open a 20×0.04mm opening on one side, and inject ...

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Abstract

The invention discloses a low-flash high-toughness good-surface polyphenylene sulfide composition as well as a preparation method and application thereof. The polyphenylene sulfide composition is prepared from the following components in parts by weight: 95 to 99 parts of polyphenylene sulfide, 1 to 5 parts of a toughening agent, 0.5 to 1.5 parts of a coupling agent and 0.2 to 1 part of an antioxidant. The power law index of the polyphenylene sulfide is 0.5 to 0.9. The tackifying index of the polyphenylene sulfide composition is 2 to 8. The polyphenylene sulfide composition disclosed by the invention has low flash and relatively high impact strength on the premise of not influencing high heat resistance, solvent resistance and dimensional stability of the polyphenylene sulfide composition, and has a good application prospect in the field of electronic appliances.

Description

technical field [0001] The invention relates to the technical field of engineering plastics, in particular to the field of polyphenylene sulfide resin compositions, in particular to a low flash, high toughness and good surface polyphenylene sulfide composition and a preparation method and application thereof. Background technique [0002] Polyphenylene sulfide (PPS) is a thermoplastic polymer material with excellent heat resistance, solvent resistance, high dimensional stability, excellent dielectric properties, excellent flame retardancy and mechanical properties, and is widely used in Electronic and electrical, automotive, machinery, chemical and other fields. Due to the structure of the main chain benzene ring, the PPS material has strong rigidity, is not sensitive to shearing, and has very high fluidity, which is prone to large flash during injection molding. Flash is the overflowing material or burr on the parting surface of injection molding. Excessive flash will affe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L81/02C08L23/08C08K5/54C08K5/134C08K5/526
CPCC08L81/02C08L2201/08C08L23/0884C08K5/54C08K5/1345C08K5/526Y02E10/50
Inventor 郭墨林陈平绪叶南飚骆清源仇禄禹权丁超
Owner KINGFA SCI & TECH CO LTD
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