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Silane cross-linking low-smoke halogen-free flame retardant polyolefin elastomer material for elevator cables and preparation method

A polyolefin elastomer and silane crosslinking technology, which is applied in the direction of plastic/resin/wax insulators, organic insulators, etc., can solve the problems of unsuitable irradiation crosslinking methods and uneven wall thickness, and achieve good elasticity and flame retardancy Good performance and high temperature resistance

Active Publication Date: 2017-05-10
上海新上化高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Elevator accompanying cables mostly have a flat structure with uneven wall thickness, so it is not suitable for irradiation cross-linking

Method used

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  • Silane cross-linking low-smoke halogen-free flame retardant polyolefin elastomer material for elevator cables and preparation method
  • Silane cross-linking low-smoke halogen-free flame retardant polyolefin elastomer material for elevator cables and preparation method
  • Silane cross-linking low-smoke halogen-free flame retardant polyolefin elastomer material for elevator cables and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Silane grafted polyolefin elastomer material A:

[0040] formula:

[0041]

[0042] Preparation:

[0043] will INFUSE TM Olefin block copolymers (OBC)s (Dow 9107), ethylene-hexene copolymer elastomer (Mitsui Chemicals DF840), di-tert-butyl peroxide, vinyltrimethoxysilane and antioxidant tetrakis [β- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, through a twin-screw extruder at 150 ° C for reaction extrusion granulation, drying after cooling, to obtain silane grafted elastic Body A material;

[0044] Low-smoke halogen-free flame-retardant polyolefin elastomer B material containing cross-linking catalyst:

[0045] formula:

[0046]

[0047] The compound flame retardant consists of:

[0048] Aluminum hydroxide 100 parts

[0049] Magnesium hydroxide 30 parts

[0050] Zinc borate 15 parts

[0051] The vinyl acetate content is 40% ethylene-vinyl acetate copolymer (Mitsui-DuPont 40LX), ethylene-hexene copolymer elastomer (Mitsui Chemical...

Embodiment 2

[0054] Silane grafted polyolefin elastomer material A:

[0055] formula:

[0056]

[0057] Preparation:

[0058] will INFUSE TMOlefin block copolymers (OBC)s (Dow 9007), ethylene-octene copolymer elastomers (Exxon 8203), dicumyl peroxide, vinyltrimethoxysilane and antioxidant tetrakis[β -(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, through a twin-screw extruder at 190 ° C for reaction extrusion granulation, after cooling, dry treatment to obtain silane grafted Elastomer A material;

[0059] Low-smoke halogen-free flame-retardant polyolefin elastomer B material containing cross-linking catalyst:

[0060] formula:

[0061]

[0062]

[0063] The compound flame retardant consists of:

[0064] Aluminum hydroxide 100 parts

[0065] Magnesium hydroxide 50 parts

[0066] Zinc borate 50 parts

[0067] Ethylene-vinyl acetate copolymer (TPC KA-31) with a vinyl acetate content of 28%, ethylene-octene copolymer elastomer (Dow 8411), compound flam...

Embodiment 3

[0070] Silane grafted polyolefin elastomer material A:

[0071] formula:

[0072]

[0073] Preparation:

[0074] will INFUSE TM Olefin block copolymer (OBC)s (Dow 9000) 40 parts, ethylene octene copolymer elastomer (SK Chemical 883) 60 parts, dicumyl peroxide 0.5 parts, vinyl triethoxysilane 2.2 parts 0.15 parts of antioxidant tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, carried out reaction extrusion granulation by twin-screw extruder at 180°C, cooled Carry out drying treatment afterward, obtain silane grafted elastomer A material;

[0075] Low-smoke halogen-free flame-retardant polyolefin elastomer B material containing cross-linking catalyst:

[0076] formula:

[0077]

[0078] The antioxidant is a 1:1 mixture of tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol and dilauryl thiodipropionate;

[0079] 1.7 parts of coupling agent

[0080] Lubricant 3 parts

[0081] The compound flame retardant consis...

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Abstract

The invention discloses a silane cross-linking low-smoke halogen-free flame retardant polyolefin elastomer material for elevator cables and a preparation method. The silane cross-linking low-smoke halogen-free flame retardant polyolefin elastomer material for the elevator cables is prepared from a silane grafted polyolefin elastomer resin material A and a low-smoke halogen-free flame retardant polyolefin elastomer material B containing a cross-linking catalyst, and the weight ratio of the material A to the material B is (20 to 30): (80 to 70); and the polyolefin elastomer resin is one or two of INFUSETM olefin blocked copolymer (OBC)s (with the density of 0.870 to 0.885 g / cm<3> and the melt index of 0.5 to 5 g per 10 min) and ethylene-alpha olefin copolymer elastomer (POE). Compared with other silane cross-linking flame retardant products on the market, the material has preferable processability. The material has the characteristics of flexibility (80 to 85 A), high elasticity, cold resistance (-40 DEG C), high temperature resistance level (at the long-term use temperature of 105 DEG C), high cracking resistance, high flame retardant property and the like, and is applicable to jacket layers of elevator traveling cables.

Description

technical field [0001] The invention relates to a silane crosslinked low-smoke halogen-free flame-retardant polyolefin elastomer material and a preparation method thereof. Background technique [0002] The elevator is an indispensable means of transportation in high-rise buildings. It must move up and down frequently, and the cables and related signal lines that provide the working power for the elevator must also rise and fall repeatedly with it. During the high-speed movement of the elevator, the wind resistance of these accompanying cables is large, so that the cables are frequently pulled, which affects the service life. After the lifting movement, there may be breakage and damage, which may result in power failure or interruption of other related functions. [0003] Currently known elevator accompanying cables adopt halogen-containing materials such as polyvinyl chloride (PVC) insulation layer and sheath layer. Once PVC breaks out in fire, a large amount of dense smoke...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L51/06C08L83/04C08K13/02C08K3/22C08K3/38C08K5/5425C08F255/02C08F255/00C08F230/08H01B3/44
Inventor 嵇建忠徐永卫徐晓辉唐艳芳邓峰
Owner 上海新上化高分子材料有限公司
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