Title:
MOLDING METHOD FOR PRODUCING POSITIVE DISPLACEMENT MOTOR STATOR BY USING ELASTOMER MATERIAL
Document Type and Number:
WIPO Patent Application WO/2020/077965
Kind Code:
A1
Abstract:
A molding method for producing a positive displacement motor stator by using an elastomer material, comprising the following steps: S1. sequentially roughening, cleaning and drying an inner surface of a stator tube; mixing an adhesive with a diluent and then coating on the inner surface of the dried stator tube, heating, and then saving for future use; S2. evenly coating a mold release agent on a surface of a mandrel mold, and saving for future use after heating or naturally drying; S3. assembling the processed stator tube and the processed mandrel mold to obtain a combined mold; S4. evenly mixing a prepolymer and a defoamer, and then performing vacuum degassing at a negative pressure; S5. evenly mixing the defoamed prepolymer and a curing agent, pouring the obtained mixed solution into the combined mold of step S3, sealing, grading and curing by heating; cooling after curing is complete, and extracting the mandrel mold so as to obtain a positive displacement motor stator having excellent performance in hardness, tear strength, tensile strength, elongation at break, permanent deformation rate, and so on.
Inventors:
GUO DINGYU (CA)
ZHANG HONGRUI (CN)
ZHU MINGHUI (CN)
LIU YIRAN (CN)
LIU ZHUANRUI (CN)
CHEUNG PAUL KWONG SHUN (CA)
LIU XIAOBO (CN)
ZHANG HONGRUI (CN)
ZHU MINGHUI (CN)
LIU YIRAN (CN)
LIU ZHUANRUI (CN)
CHEUNG PAUL KWONG SHUN (CA)
LIU XIAOBO (CN)
Application Number:
PCT/CN2019/082764
Publication Date:
April 23, 2020
Filing Date:
April 15, 2019
Export Citation:
Assignee:
SHANGHAI PUJIA DRILLING TECH CO LTD (CN)
International Classes:
B29C39/02
Foreign References:
| CN101637955A | 2010-02-03 | |||
| CN202483870U | 2012-10-10 | |||
| US20110070111A1 | 2011-03-24 |
Attorney, Agent or Firm:
DUAN&DUAN LAW FIRM et al. (CN)
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