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A high-glow wire halogen-free flame-retardant composite material and its preparation method

A flame-retardant composite material and high-glow wire technology, which is applied in the field of halogen-free flame-retardant materials, can solve the problems of high price and low fire resistance temperature, and achieve the effect of low cost, good strength and toughness, and meeting the requirements of injection molding process

Active Publication Date: 2018-09-28
DONGGUAN ZHONGYI NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-glow wire halogen-free flame-retardant composite material and its preparation method to solve the problems of high price and low fire-proof temperature of existing halogen-free flame-retardant materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Step 1): Weigh 100 parts of the nylon PA66 A3K and pour it into a high-speed mixer, stir for 2 minutes, add 0.07 parts of coupling agent KH660 and mix evenly, then add 2 parts of halogen-free flame retardant TPP and 2 parts of non-halogen flame retardant Halogenated flame retardant MC-25 and adding 0.07 parts of antioxidant 1098, 0.14 parts of lithium stearate, 0.7 parts of nucleating agent K145, set the mixing speed to 36.2 rpm, and stirred for 5 minutes;

[0028] Step 2): Pour the uniformly mixed raw materials in step 1) into the storage hopper of the twin-screw extruder, and set the feeding speed of the extruder to 15-17rpm;

[0029] Step 3): Put the raw materials in the storage hopper into the extruder from the side feed port for shear blending, melt extrusion, and granulate to obtain a high glow wire halogen-free flame-retardant composite material. Wherein, the extrusion speed is 950-1050rpm, and the processing temperature of the extruder is 220-310°C.

Embodiment 2

[0031] Step 1): Weigh 56.1 parts, 25.5 parts and 3.4 parts of nylon PA66 A3K, nylon PA66 and PBT respectively and pour them into a high-speed mixer, stir for 2 minutes, add 0.11 parts of coupling agent KH660 and mix evenly, and then respectively Add 1 part, 2.5 parts, 3.5 parts of flame retardants TPP, MC-25 and MGA Melaiplatin, 0.11 parts of antioxidant 1098, 0.22 parts of lithium stearate, 1.1 parts of nucleating agent K145, and set the mixing speed to 36.2rpm , stirring for 5 minutes;

[0032] Step 2): Pour the uniformly mixed raw materials in step 1) into the storage hopper of the twin-screw extruder, and set the feeding speed of the extruder to 15-17rpm;

[0033] Step 3): Put the raw materials in the storage hopper into the extruder from the side feed port for shear blending, melt extrusion, and granulate to obtain a high glow wire halogen-free flame-retardant composite material. Wherein, the extrusion speed is 950-1050rpm, and the processing temperature of the extruder ...

Embodiment 3

[0035] Step 1): Weigh 54.8 parts, 18.8 parts and 1.5 parts of nylon PA66 A3K, nylon PA66 and PBT respectively and pour them into a high-speed mixer, stir for 2 minutes, add 0.09 parts of coupling agent KH660 and mix evenly, and then respectively Add 1 part, 2 parts, 2 parts of flame retardant TPP, MC-25 and MGA Melai Platinum and add 0.09 part of antioxidant 1098, 0.18 part of lithium stearate, 0.9 part of nucleating agent K145, set the mixing speed to 36.2 rpm, stirring for 5 minutes;

[0036] Step 2): Pour the uniformly mixed raw materials in step 1) into the storage hopper of the twin-screw extruder, and set the feeding speed of the extruder to 15-17rpm;

[0037] Step 3): Put the raw materials in the storage hopper into the extruder from the side feed port for shear blending, melt extrusion, and granulate to obtain a high glow wire halogen-free flame-retardant composite material. Wherein, the extrusion speed is 950-1050rpm, and the processing temperature of the extruder is...

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Abstract

The invention discloses a high glow-wire halogen-free flame retardant composite material which is prepared by blending the following ingredients, by weight, 91.9-93.4% of a fireproof halogen-free nylon material, 5.3-6.5% of a halogen-free fire retardant and 1.3-1.6% of a glow-wire additive. The glow-wire additive is formed by mixing an anti-oxidant, a lubricant, a coupling agent and a nucleating agent according to the ratio of 1:2:1:10. The invention also discloses a preparation method of the above composite material. the preparation method comprises the following steps: firstly adding a coupling agent into the fireproof halogen-free nylon material in a storage hopper and stirring for 2 min, and then adding the halogen-free flame retardant and the glow-wire additive and stirring for 5 min; pouring into the storage hopper, adding into a twin-screw extruder through a side feeding mouth, shearing and blending, carrying out melt extrusion, and pelleting to obtain the composite material. The composite material provided by the invention has good strength and toughness, and GWIT can reach 850 DEG C.

Description

technical field [0001] The invention relates to the technical field of halogen-free flame-retardant materials, in particular to a high-glow-wire halogen-free flame-retardant composite material and a preparation method thereof. Background technique [0002] With the increasing demand for the development of domestic high-tech materials, the low cost and high performance of halogen-free flame-retardant composite materials have become the focus of market development. At present, the main types of halogen-free fireproof plastics used in the market are Toray CM3004 from Japan, Asahi Kasei FR370 from Japan, and A63V0 from Israel, etc. These materials have excellent high temperature resistance, strength, chemical resistance, dimensional stability and electrical properties. However, its raw materials are basically imported, and the price is high. [0003] In addition, the fire resistance temperature of halogen-free flame retardant materials currently on the market can only reach 750...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/06C08L67/02C08K5/00C08K5/523C08K5/098B29C47/92B29C48/92
CPCB29C48/92B29C2948/92704C08K5/00C08K5/098C08K5/523C08L77/06C08L2201/02C08L2201/22C08L2203/20C08L2205/025C08L2205/03C08L2205/24C08L67/02
Inventor 李志成
Owner DONGGUAN ZHONGYI NEW MATERIAL TECH CO LTD
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