Flame-retarding non-halogen silicon core pipe as special material and its preparing process

A special material, silicon core tube technology, applied in the field of flame retardant special materials, can solve the problems of increasing product cost, affecting the mechanical properties of materials, large addition amount, etc., to prevent dripping phenomenon, practicality, addition amount reduced effect

Inactive Publication Date: 2002-09-18
SINOPEC YANGZI PETROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using this flame retardant, the addition amount is relatively large, which not only increases the cost of the product, but also affects the mechanical properties of the material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0010] Example 1: The proportioning of materials is: (by weight percentage).

[0011] HDPE resin (model TR-480) 55%

[0012] Composite halogen-free flame retardant (type ANT-6 / mg(OH) 2 )40%

[0013] Processing aid (model is EVA) 4%

[0014] Stabilizer (model KH-550) 1%

[0015] The preparation method is: first fully mix the halogen-free flame retardant, HDPE resin, processing aid, and stabilizer, and then add the twin-screw extruder, extrude from the twin-screw extruder and then granulate; the twin-screw extruder The processing temperature of the extruder is 160 ℃ ~ 230 ℃; when the uniformly mixed raw materials are added to the twin-screw extruder, the method of side feeding is adopted for the flame retardant system, so that the flame retardant and HDPE resin have better compatibility.

example 2

[0016] Example 2: The proportioning of materials is: (by weight percentage)

[0017] HDPE resin (model TR-48) 63%

[0018] Composite halogen-free flame retardant (type ANT-6 / mg(OH) 2 )25%

[0019] Processing aid (model is EVA) 1%

[0020] Stabilizer (model KH-550) 1%

[0021] Processing method is with example 1.

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PUM

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Abstract

A non-halogen fire-retarding material for the conduit of electric wire, electric cable or optical cable is prepared from HCPE resin (51-73 wt%), non-haloen composite fire retardant (25-45%), assistant (1-5%) and stabilizer (0.1-2%) through mixing, dual-screw extruding out and granulating. Its advantages are high fire-retarding effect and not releasing a lot of toxic gas.

Description

1. Technical field: [0001] The invention relates to a material and a preparation method for a threading pipe used in electric wires, cables or optical cables, especially a flame-retardant special material. 2. Background technology: [0002] The flame retardant of wire and cable conduit materials can be divided into two types: halogen flame retardant and halogen free flame retardant. Halogenated flame retardant has a small amount of addition and high flame retardant performance, but when it burns, it will volatilize a large amount of toxic gases, causing "secondary disasters". The matrix of this material is HDPE resin, and the flame retardant is an intumescent flame retardant agent. The matrix of halogen-free flame retardant materials is HDPE resin, and the flame retardants are magnesium hydroxide, aluminum hydroxide, phosphorus flame retardants, nitrogen flame retardants, etc. When using this kind of flame retardant, the addition amount is relatively large, which not only ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/40C08L23/06H01B7/295
Inventor 杨柳徐振明张玲凤姚斌陈枫刘建威
Owner SINOPEC YANGZI PETROCHEM
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