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Title:
HALOGEN-FREE FLAME RETARDANT H-CLASS SLOT INSULATING MATERIAL FOR NUCLEAR POWER OR TRANSFORMER, AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/119782
Kind Code:
A1
Abstract:
The present invention relates to a halogen-free flame retardant H-class slot insulating material for nuclear power or a transformer, comprising a first polyimide film layer, a first mixed glue layer, a second mixed glue layer, a first woven glass cloth, a second woven glass cloth, a first B-grade flame retardant glue layer and a second B-grade flame retardant glue layer, wherein the first B-grade flame retardant glue layer and the second B-grade flame retardant glue layer are formed by a B-grade flame retardant glue, and the raw materials of the B-grade flame retardant glue respectively comprise a halogen-free flame retardant epoxy resin and an epoxy resin curing agent with a feeding mass ratio of 10-15 : 1, wherein the halogen-free flame retardant epoxy resin comprises a self-flame-retardant liquid epoxy resin and a self-flame-retardant solid epoxy resin at a feeding mass ratio of 0.5-2 : 1, or the raw materials of the B-grade flame retardant glue respectively comprise a liquid epoxy resin, a solid epoxy resin and a halogen-free flame retardant with a feeding mass ratio of 0.4-2 : 0.4-2 : 1. The insulating material of the application does not easily absorb moisture and has a good insulating effect, and the temperature resistance grade can reach a H grade.

Inventors:
XU WEIHONG (CN)
LI YONGRANG (CN)
XIA YU (CN)
XU FANG (CN)
Application Number:
CN2018/094927
Publication Date:
June 27, 2019
Filing Date:
July 07, 2018
Export Citation:
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Assignee:
SUZHOU JUFENG ELECTRICAL INSULATION SYSTEM CO LTD (215214, CN)
International Classes:
H01B17/60; C09J11/04; C09J11/06; C09J11/08; C09J163/00; H01B17/66; H01B19/00; H01B19/04; H01F27/32; H02K3/34
Foreign References:
CN108183008A2018-06-19
CN108183007A2018-06-19
CN103072352A2013-05-01
CN102977829A2013-03-20
CN103400638A2013-11-20
GB1282015A1972-07-19
Attorney, Agent or Firm:
SUZHOU ZHITU INTELLECTUAL PROPERTY FIRM (215163, CN)
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