Title:
PBT COMPOSITION RESISTANT TO CYCLIC INJECTION MOLDING, AND PREPARATION METHOD THEREFOR AND ARTICLE THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/279985
Kind Code:
A1
Abstract:
Disclosed in the present invention are a PBT composition resistant to cyclic injection molding, and a preparation method therefor. The PBT composition resistant to cyclic injection molding of the present invention comprises the following components, in parts by weight: 50-80 parts of PBT, 10-40 parts of glass fiber, 1-3 parts of an epoxy resin, 0.1-0.3 parts of an antioxidant, 2-8 parts of an ethylene-butyl acrylate copolymer, and 0.5-2 parts of trimethylol propane triacrylate. According to the present invention, by means of the synergistic effect of the trimethylol propane triacrylate, the ethylene-butyl acrylate copolymer and the epoxy resin, the breakage of a PBT molecular chain is effectively prevented, such that the degradation degree of a PBT material during multiple injection molding processes is reduced, and the mechanical property retention rate of the PBT composition after being subjected to multiple instances of injection molding is further improved. The PBT composition of the present invention has a mechanical property retention rate of ≥ 97% after being subjected to injection molding twice, has a mechanical property retention rate of ≥ 91% after being subjected to injection molding three times, and is suitable for use in multiple cycles of injection molding.
Inventors:
CHEN WEI (CN)
CHEN PINGXU (CN)
YE NANBIAO (CN)
MO WENJIE (CN)
GONG DEJUN (CN)
FENG JIAN (CN)
FU XUEJUN (CN)
CHEN PINGXU (CN)
YE NANBIAO (CN)
MO WENJIE (CN)
GONG DEJUN (CN)
FENG JIAN (CN)
FU XUEJUN (CN)
Application Number:
PCT/CN2022/101086
Publication Date:
January 12, 2023
Filing Date:
June 24, 2022
Export Citation:
Assignee:
KINGFA SCI &TECH CO LTD (CN)
International Classes:
C08L67/02; C08K5/11; C08K7/14; C08L23/08; C08L63/02
Domestic Patent References:
| WO2018131069A1 | 2018-07-19 | |||
| WO2019044813A1 | 2019-03-07 |
Foreign References:
| CN113583396A | 2021-11-02 | |||
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| US20130116382A1 | 2013-05-09 |
Attorney, Agent or Firm:
YOGO PATENT AND TRADEMARK AGENCY LIMITED COMPANY (CN)
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