Title:
ULTRA-SOFT B1-LEVEL LOW-SMOKE HALOGEN-FREE FLAME-RETARDANT SHEATH MATERIAL AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/135271
Kind Code:
A1
Abstract:
Provided are an ultra-soft B1-level low-smoke halogen-free flame-retardant sheath material and a preparation method therefor. The sheath material comprises the following components in parts by weight: 15 to 35 parts of an ethylene-methyl acrylate copolymer; 15 to 35 parts of an ethylene-octylene copolymer; 25 to 40 parts of a hydrogenated styrene-butadiene block copolymer; 5 to 15 parts of a rubber filling oil; 3 to 8 parts of SEBS grafted maleic anhydride; 3 to 8 parts of polyphenyl ether; 120 to 170 parts of magnesium hydroxide; 10 to 35 parts of aluminum hypophosphite; 3 to 8 parts of a smoke suppressant; 1 to 3 parts of an antioxidant; and 1 to 3 parts of a lubricant, wherein the content of styrene in the hydrogenated styrene-butadiene block copolymer is 20 to 40 wt%, and the aluminum hypophosphite is subjected to a coating treatment. The maximum value of the Shore A hardness of the sheath material is 79 A, which satisfies B1 level flame retardance; the light transmittance of the finished product is larger than or equal to 60%; and the tensile strength and elongation at break thereof meet the standard. Same can be applied to an environment in need of an ultra-soft cable sheath.
Inventors:
LIANG JIARONG (CN)
HUANG XIANBO (CN)
YE NANBIAO (CN)
LIU LEWEN (CN)
FU XIAO (CN)
LI JIBIAO (CN)
HUANG XIANBO (CN)
YE NANBIAO (CN)
LIU LEWEN (CN)
FU XIAO (CN)
LI JIBIAO (CN)
Application Number:
PCT/CN2021/138867
Publication Date:
June 30, 2022
Filing Date:
December 16, 2021
Export Citation:
Assignee:
KINGFA SCI &TECH CO LTD (CN)
International Classes:
C08L53/02; C08K3/22; C08K3/28; C08K3/34; C08K3/38; C08K9/06; C08K9/10; C08K13/06; C08L23/08; C08L51/00; C08L71/12; H01B3/30; H01B3/44
Foreign References:
| CN112759882A | 2021-05-07 | |||
| CN110117391A | 2019-08-13 | |||
| CN106280198A | 2017-01-04 | |||
| CN106221035A | 2016-12-14 | |||
| CN106317746A | 2017-01-11 | |||
| CN106280034A | 2017-01-04 | |||
| CN106366545A | 2017-02-01 | |||
| CN106349720A | 2017-01-25 | |||
| CN106221034A | 2016-12-14 | |||
| US20190031868A1 | 2019-01-31 | |||
| JP2009019190A | 2009-01-29 |
Attorney, Agent or Firm:
YOGO PATENT AND TRADEMARK AGENCY LIMITED COMPANY (CN)
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