Special material for injection grade non-halogen flame-retardant wire plug and preparation method thereof

A technology of injection molding grade and special material, which is applied in the field of injection molding grade halogen-free flame retardant wire plug special material and its preparation field, can solve the problems of unfavorable injection molding processing, reduced material flow performance, inability to meet the wide range of hardness requirements of wire plugs, etc. The effect of dosage, high practical value and excellent physical and mechanical properties

Active Publication Date: 2008-04-16
SHANGHAI KINGFA SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Inorganic flame retardants such as magnesium hydroxide and aluminum hydroxide are cheap and rich in sources, but they often need to be added in large amounts to achieve a good flame retardant effect, which reduces the flow properties of t

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The first step. Get 20 parts of SEBS in parts by weight, add 20 parts of phosphoric acid esters in the high-speed mixer and jointly process to obtain 40 parts of oil-filled SEBS after 8 minutes, and the mixer speed is 1500 rev / mins;

[0033] The second step. 40 parts of oil-extended SEBS, 25 parts of ethylene-propylene copolymers, 12 parts of LLDPE, 10350.5 parts of IRGNOX, 3 parts of SEBS grafted maleic anhydride copolymers, 2,2'-thiobis[3-( 0.5 parts of ethyl 3,5-di-tert-butyl-4-hydroxyphenyl)propionate], 0.5 parts of β,β'-thiodipropionic acid distearate, 0.3 parts of erucamide, stearic acid 0.7 parts of zinc are premixed uniformly in a high-speed mixer to obtain the C premix, the mixer speed is 500 rpm, and the mixing time is 5 minutes;

[0034] The third step. Then 15 parts of JLS-APP and 3 parts of gray red phosphorus are pre-mixed in a high-speed mixer to obtain D premix. The speed of the mixer is 500 rpm, and the mixing time is 5 minutes;

[0035] Step 4. Add th...

Embodiment 2

[0038] The first step. Get 15 parts of SEBS in parts by weight, add 15 parts of phosphoric acid esters in high-speed mixer and jointly process and obtain 30 parts of oil-filled SEBS after 8 minutes, mixer speed is 1500 rev / mins;

[0039] The second step. 30 parts of oil-extended SEBS, 30 parts of ethylene-propylene copolymer, 12 parts of LLDPE, 4452 parts of Naugard, 3 parts of ethylene-propylene copolymer grafted maleic anhydride copolymer, 2,2'-thiobis [3-(3,5-di-tert-butyl-4-hydroxyphenyl) ethyl propionate] 0.5 parts, 3,3'-thiodipropanoic acid dodecanoate 0.5 parts, erucamide 0.3 parts, 0.7 part of zinc stearate was premixed uniformly in a high-speed mixer to obtain the C premix, and the mixer speed was 500 rpm, and the mixing time was 5 minutes;

[0040] The third step. Then 20 parts of MCA and 3 parts of microencapsulated red phosphorus are premixed in a high-speed mixer to obtain D premix, and the mixer speed is 500 rpm, and the mixing time is 5 minutes;

[0041] The pr...

Embodiment 3

[0043] The first step. Get 10 parts of SEBS in parts by weight, add 10 parts of phosphoric acid esters in the high-speed mixer and jointly process 8 minutes to obtain 20 parts of oil-filled SEBS, and the speed of the mixer is 1500 rpm;

[0044] The second step. 20 parts of oil-extended SEBS, 35 parts of ethylene-propylene copolymer, 12 parts of LLDPE, 1681.5 parts of IRGAFOS, 3 parts of polypropylene grafted maleic anhydride copolymer, 2,2'-thiobis[3-( 0.5 parts of ethyl 3,5-di-tert-butyl-4-hydroxyphenyl)propionate], 0.5 parts of β,β'-thiodipropionic acid distearate, 0.3 parts of silicone oil, zinc stearate 0.7 parts were premixed uniformly in a high-speed mixer to obtain C premix, the speed of the mixer was 500 rpm, and the mixing time was 5 minutes;

[0045] The third step. Then 25 parts of pentaerythritol and 3 parts of microencapsulated red phosphorus are premixed in a high-speed mixer to obtain D premix, and the mixer speed is 500 rpm, and the mixing time is 5 minutes;

[...

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PUM

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Abstract

The invention discloses special material and preparation method for injection molding level halogen-free flame retardation wire plug. The special material adopts elastic body and polyolefin resin as base material with expansion type flame retardant, flame retarding synergist, compatilizer, antioxidant and processing agent added. After intensive mixing, the special material is obtained through extrusion and pelleting by a BUSS mixing roll with autoweighing blanking device. The method has good mixing effect, stable compounding formula and high processing efficiency and the particles prepared via the method have even size and bright appearance. The flame retardation rating of produces prepared via the method reaches UL94V-0 level, the tiptop fusion index reaches 55g/10min, and Shore hardness is from 65A to 95A in case of qualified flame retardation level and high fusion index. The composite material provided by the invention is environmental-friendly material which completely meets current international environmental requirements on halogen-free material. The material which not only has good flame retardation performance and flowing property but also enables smooth surface and good felt of products is suitable for manufacturing various injection molding level wire plugs with high flame retardation requirements.

Description

technical field [0001] The invention relates to an injection molding-grade halogen-free flame-retardant special material for wire plugs and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] Polyvinyl chloride (PVC) is one of the most traditional resin raw materials for wire plugs. Due to the high flame retardancy of PVC itself, adding a small amount of flame retardant on its basis can make the material reach the UL94 V-0 level, but when it is burned, it will release toxic gases such as hydrogen chloride and produce a large amount of toxic smoke. Halogen-free flame retardant materials perform the job of substitution. [0003] Inorganic flame retardants such as magnesium hydroxide and aluminum hydroxide are cheap and rich in sources, but they often need to be added in large amounts to achieve a good flame retardant effect, which reduces the flow properties of the material and is not conducive to injection moldin...

Claims

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Application Information

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IPC IPC(8): C08L53/00C08K5/521H01R13/46B29C47/00C08L23/06C08K5/3492
Inventor 郭涛王斌谢明星何浏炜
Owner SHANGHAI KINGFA SCI & TECH
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