INTERNAL MOLD RELEASE AGENNT-CONTAINING FIBER-REINFORCED COMPOSITE MOLDED ARTICLE

WIPO Patent Application WO/2021/166698

A1

A fiber-reinforced composite molded article which is obtained by molding reinforcing fibers and an epoxy resin, while containing a silicone oil as an internal mold release agent, and which is characterized in that the fragment ion intensity ratio A/B as detected if the molded article surface is analyzed by time-of-flight secondary ion mass spectrometry is expressed by the relational expression 3 ≤ A/B ≤ 20. A: The intensity of a fragment ion that has the highest intensity among the fragment ions derived from the silicone oil B: The intensity of a fragment ion that has the highest intensity among the fragment ions derived from the epoxy resin A fiber-reinforced resin molded article according to the present invention is capable of achieving high productivity and high quality by effectively exhibiting releasability from a mold with a small addition amount of a mold release agent without using an external mold release agent, while being capable of exhibiting high adhesion to other members without requiring a special surface treatment such as sanding.

KITANI CHIASA (JP)
MATSUMOTO SATOSHI (JP)
OUCHIYAMA NAOYA (JP)
KAWASHIMA SHIGERU (JP)
TSUCHIYA ATSUKI (JP)

PCT/JP2021/004415

August 26, 2021

February 05, 2021

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TORAY INDUSTRIES (JP)

B29B15/08; B29C70/18; B29C70/40; C08K5/541; C08K7/02; C08L101/00; B29K101/10; B29K105/08

WO2019188020A1	2019-10-03
WO2019208040A1	2019-10-31

JP2010229326A	2010-10-14
JP2017132858A	2017-08-03
JPH03287628A	1991-12-18
JP2015151457A	2015-08-24
JP2010274612A	2010-12-09
JP2011089071A	2011-05-06
JP2015151457A	2015-08-24
JP2017203107A	2017-11-16

See also references of EP 4108403A4

BAN Toshimitsu et al. (JP)

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