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Composition for preparing highly-conductive flame retardant plastic, highly-conductive flame retardant plastic prepared thereby and preparation method thereof

A technology of flame retardant plastic and composition, applied in the field of polymer composite materials, can solve the problems of unsafe use, low flame retardant level, etc., and achieve the effects of easy processing and molding, high flame retardant level and good electrical conductivity

Inactive Publication Date: 2014-09-03
CHANGSHA QIANYUAN PLASTIC TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a composition, a high-conductivity flame-retardant plastic prepared therefrom, and a preparation method of the high-conductivity flame-retardant plastic, so as to solve the problem of low flame-retardant grade of high-conductivity flame-retardant materials in the prior art and unsafe technology question

Method used

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  • Composition for preparing highly-conductive flame retardant plastic, highly-conductive flame retardant plastic prepared thereby and preparation method thereof
  • Composition for preparing highly-conductive flame retardant plastic, highly-conductive flame retardant plastic prepared thereby and preparation method thereof
  • Composition for preparing highly-conductive flame retardant plastic, highly-conductive flame retardant plastic prepared thereby and preparation method thereof

Examples

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preparation example Construction

[0041] The present invention also provides a method for preparing the above-mentioned high-conductivity flame-retardant plastic, including the steps of mixing, extruding and plasticizing, granulating, cooling, drying, and sieving. The mixing steps are:

[0042] 1) Mix the conductive material at 300-500r / min for 3-5min at a temperature of 90-110°C to obtain the first conductive material, wherein, based on the mass of the conductive material, the conductive material includes 65-78wt% linear low-density polyethylene, 5~10wt% polyolefin elastomer, 10~20wt% superconducting carbon black, 1~2wt% coupling agent, 1~3wt% zinc stearate, 1~3wt% polyethylene wax, 0.2~0.4wt% antioxidant agent, 1~3wt% bis stearamide, 2~5wt% sizing agent and 0.02~0.1wt% initiator.

[0043] 2) Mixing the first conductive material at 180-210° C. and 800-1200 r / min for 5-10 minutes to obtain the second conductive material.

[0044] 3) The second conductive material is melted and plasticized to obtain a molten m...

Embodiment 1～5

[0053] Combine the conductive material and the flame retardant material according to the recipes of Examples 1 to 5 and Comparative Example 1, put the conductive material and the flame retardant material into the mixer according to the ratio of 88:12, and mix them in the mixing machine. In a single-stage single-screw, extruding and plasticizing at 180 ° C to obtain a flame-retardant conductive plastic. Table 1 is the type and content of the prescriptions of Examples 1-5 and Comparative Example 1.

[0054] Processing performance: Symbol I indicates that the material is easy to process, and the material components do not migrate, do not dissociate, and do not dialysis; Symbol II indicates that hydrogen bromide and free bromine are produced, with high viscosity, easy to stick to the screw and die head, and there is a lot of retained material, which is not easy to clean. clear.

[0055] Flame retardant grade: According to the ZA-306.1-2007 standard, it is divided into four catego...

Embodiment 6

[0060]1) Mix 88% of the conductive material in Example 1 at 180°C at 500r / min for 3 minutes to obtain the first conductive material; mix the first conductive material at 180°C at 1200r / min for 5min to obtain the second Conductive material: transporting the second conductive material to the hopper of a twin-screw extruder, performing a melting and plasticizing step at a temperature of 220° C. and a pressure of 0.5 MPa to obtain a molten material;

[0061] 2) Stir 12% of the flame retardant material in Example 1 at room temperature at 50 r / min for 2 minutes to obtain the first flame retardant material;

[0062] 3) Adding the first flame retardant material to the molten material to obtain a mixed material.

[0063] 4) The mixed material was transported to the hopper of a single-screw extruder, and the melting and plasticizing step was carried out at a temperature of 200° C. and a pressure of 8 MPa to obtain a plasticized material.

[0064] 5) Cut the plasticized material into pe...

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Abstract

The invention provides a composition for preparing highly-conductive flame retardant plastic. The composition comprises 85-90wt% of electric conductive material and 10-15wt% of flame retardant material, wherein the flame retardant material comprises 55-70wt% of low linear density polyethylene, 10-20wt% of encapsulated red phosphorous, 5-10wt% of zinc oxide, 5-10wt% of zinc borate and 2-5wt% of impregnating compound, according to the mass of the flame retardant material. With the adoption of the composition for preparing highly-conductive flame retardant plastic provided by the invention, the technical problems of the prior art that the highly-conductive flame retardant material is low in flame rating and dangerous in use are solved.

Description

technical field [0001] The invention relates to the field of polymer composite materials, and in particular, relates to a composition for preparing high-conductivity flame-retardant plastics. Another aspect of the invention also provides high-conductivity flame-retardant plastics and a preparation method thereof. Background technique [0002] The current plastics are classified according to their electrical properties, and can be divided into insulators, antistatic bodies, conductors, and high conductors. Usually the resistance value is 10 10 Anything above Ω·cm is called an insulator; the resistance value is 10 4 ~10 9 Those in the range of Ω·cm are called semiconductors or antistatic bodies; the resistance value is 10 4 Those below Ω·cm are called conductors; those with resistance values ​​below 100Ω·cm or even lower are called high conductors. Highly conductive plastic is a material that has the advantages of high flexibility, high strength, and low cost of polymers, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L23/00C08K13/06C08K9/10C08K3/02C08K3/04C08K5/098C08K5/20C08K3/22C08K3/38
Inventor 喻友红
Owner CHANGSHA QIANYUAN PLASTIC TECH DEV
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