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Preparation method of conductive flame-retardant PC/ABS polymers

A polymer and straw technology, applied in the field of composite materials, can solve the problems of endangering life safety and environmental safety, secondary pollution, etc., and achieve the effects of good fire and flame retardancy, combustion inhibition, and good flame retardancy

Inactive Publication Date: 2017-09-29
WUHU YANGZHAN NEW MATERIAL TECH SERVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of flame retardant will release a large amount of toxic and harmful gases when burning, such as hydrogen halide, dioxin and other gases, causing secondary pollution and seriously endangering life safety and environmental safety.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Grinding the dried wheat straw and adding it into a sodium hydroxide solution with a mass fraction of 5%, soaking it at 55° C. for 10 h, then filtering and drying;

[0025] (2) Place the dried straw in an aluminum sulfate solution with a concentration of 2.0mol L-1 for vacuum impregnation treatment for 5 hours, with a vacuum degree of 0.1MPa; Keep the temperature in the thermal reaction kettle for 5 hours, cool to room temperature, take out and wash with water, vacuum dry and pulverize to obtain nano-stalks;

[0026] (3) Take nano-stalks and place them in isopropanol, then add titanate coupling agent KR-TTS, stir for 30 minutes, filter and dry to obtain nano-stalks modified by coupling agent; the dosage of titanate coupling agent is 2% of the mass of nano-stalks;

[0027] (4) Weigh 100 parts of ABS resin, 150 parts of PC resin, and 10 parts of lubricant polypropylene wax and add them into the high-mixer for medium-high mixing; the temperature of the high-mixer is 3...

Embodiment 2

[0031] (1) Grinding the dried wheat straw and adding it to a sodium hydroxide solution with a mass fraction of 5%, soaking at 55°C for 12 hours, then filtering and drying;

[0032] (2) Place the dried straw in an aluminum sulfate solution with a concentration of 2.0mol L-1 for vacuum impregnation treatment for 5 hours, with a vacuum degree of 0.1MPa; Keep the temperature in the thermal reaction kettle for 5 hours, cool to room temperature, take out and wash with water, vacuum dry and pulverize to obtain nano-stalks;

[0033] (3) Take nano-stalks and place them in isopropanol, then add titanate coupling agent KR-TTS, stir for 30 minutes, filter and dry to obtain nano-stalks modified by coupling agent; the dosage of titanate coupling agent is 2% of the mass of nano-stalks;

[0034] (4) Weigh 120 parts of ABS resin, 150 parts of PC resin, and 20 parts of lubricant polypropylene wax and add them into the high-mixer for medium-high mixing; the temperature of the high-mixer is 30°C...

Embodiment 3

[0038] (1) Grinding the dried corn stalks into a 5% sodium hydroxide solution, soaking at 55°C for 15 hours, then filtering and drying;

[0039] (2) Vacuum impregnate the dried stalks in an aluminum nitrate solution with a concentration of 2.0mol L-1 for 5 hours, with a vacuum degree of 0.1MPa; Keep the temperature in the thermal reaction kettle for 10 hours, cool to room temperature, take out and wash with water, vacuum dry and pulverize to obtain nano-stalks;

[0040] (3) Take the nano-stalks and place them in ethanol, then add the titanate coupling agent KR-TTS, stir for 30 minutes, filter and dry to obtain the nano-stalks modified by the coupling agent; the dosage of the titanate coupling agent is 3% of mass;

[0041] (4) Weigh 100 parts of ABS resin, 150 parts of PC resin, and 12 parts of lubricant polypropylene wax and add them into the high-mixer for medium-high mixing; the temperature of the high-mixer is 30°C-40°C, and the speed is 1000-1200r / min.

[0042] (5) Weigh...

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Abstract

The invention provides a preparation method of conductive flame-retardant PC / ABS polymers. According to the method, straws are firstly subjected to nanometer modification; then, the nanometer modified straws are subjected to coupling agent surface treatment; then, the materials are used as flame-retardant filling materials to be added for resin preparation. The nanometer modified straws treated by the coupling agents are dispersed in resin base bodies in a nanometer particle state; oxides and water vapor can be generated during the heat meeting decomposition; combustible gas is diluted; the oxide generation is favorable for the combustion interruption; the effect of inhibiting combustion is achieved; a protection layer is generated to cover the surface of the polymer body (the covering is firmer due to the use of the coupling agents), so that the fire source and oxygen gas are isolated; therefore the composite material has good flame-retardant performance; meanwhile, through combination of the micro nanometer structures of nanometer straws and aluminium hydroxide with conductive carbon black, charges in the base body materials can be conducted; the conductive performance is excellent.

Description

technical field [0001] The invention belongs to the technical field of composite materials, in particular to a preparation method of conductive and flame-resistant PC / ABS polymer. Background technique [0002] PC / ABS is a thermoplastic compound made of polycarbonate (PC) and styrene-acrylonitrile-butadiene copolymer (ABS), which combines the excellent characteristics of the two materials, the formability of ABS material and PC Excellent mechanical properties, impact strength, temperature resistance, and ultraviolet (UV) resistance can be widely used in automotive interior parts and home appliances. PC / ABS, as the commercialized polymer alloy with the largest sales volume in the world, has been growing at a demand rate of about 10% in recent years. Compared with PC, PC / ABS has improved fluidity, improved processing performance, and reduced the sensitivity of products to stress, so it is widely used in automotive interiors and exteriors. At present, the commonly used flame r...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L55/02C08L23/12C08L97/02C08L35/06C08K3/22C08K3/04
CPCC08L69/00C08K2003/2227C08K2201/011C08L2201/02C08L2201/22C08L2205/035C08L55/02C08L23/12C08L97/02C08L35/06C08K3/22C08K3/04
Inventor 吴长应
Owner WUHU YANGZHAN NEW MATERIAL TECH SERVICE CO LTD
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