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High-weather-resistance low-smokiness and high-rigidity flame-retardant reinforced PP blending material and preparation method thereof

A low-smoke, high-rigidity technology, applied in the field of polymer materials, to achieve the effects of good self-extinguishing, short burning time and high strength

Inactive Publication Date: 2015-05-06
ZHEJIANG PRET NEW MATERIALS +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, unlike the relatively simple components and synthesis process of halogen-based flame retardants, high-dosage phosphorus-nitrogen-based intumescent halogen-free flame retardants IFR (20% to 30%) often involve the synthesis of multiple organic compounds. And used in combination, this will inevitably have a certain negative impact on the weather resistance and mechanical properties of flame-retardant polypropylene materials, especially when used as automotive interior parts. failed to attract attention

Method used

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  • High-weather-resistance low-smokiness and high-rigidity flame-retardant reinforced PP blending material and preparation method thereof
  • High-weather-resistance low-smokiness and high-rigidity flame-retardant reinforced PP blending material and preparation method thereof
  • High-weather-resistance low-smokiness and high-rigidity flame-retardant reinforced PP blending material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Soak 5g of carbon fiber in 1mol / L NaOH solution for 24 hours, take it out and filter it, put it in a muffle furnace, burn it at 600°C under aerobic conditions for 30 minutes, rinse it repeatedly with deionized water after cooling, and dry it The carbon fiber after surface activation treatment is obtained.

[0041] Weigh 67g of PP-1 resin, 25g of halogen-free flame retardant, 5g of carbon fiber, 5g of smoke suppressant-1, and 3g of anti-aging additive and put them into a high-speed mixer and mix them evenly. Put the obtained mixed raw material into the main feeding bin of twin-screw extrusion, and put it into the main barrel through the feeding screw. The diameter of the screw of the extruder is 35 mm, the length-to-diameter ratio L / D=36, and the temperature of each section of the main barrel is controlled. (From the feeding port to the nozzle outlet) at 185°C, 190°C, 195°C, 200°C, 210°C, 210°C, the speed of the host machine is 250 rpm, and it is obtained after melt extr...

Embodiment 2

[0043] Soak 5g of carbon fiber in 1mol / L NaOH solution for 24 hours, take it out and filter it, put it in a muffle furnace, burn it at 600°C under aerobic conditions for 30 minutes, rinse it repeatedly with deionized water after cooling, and dry it The carbon fiber after surface activation treatment is obtained.

[0044]Weigh 67g of PP-2 resin, 25g of halogen-free flame retardant, 5g of carbon fiber, 5g of smoke suppressant-2, and 3g of anti-aging additive and put them into a high-speed mixer and mix them evenly. Put the obtained mixed raw material into the main feeding bin of twin-screw extrusion, and put it into the main barrel through the feeding screw. The diameter of the screw of the extruder is 35 mm, the length-to-diameter ratio L / D=36, and the temperature of each section of the main barrel is controlled. (From the feeding port to the nozzle outlet) at 185°C, 190°C, 195°C, 200°C, 210°C, 210°C, the speed of the host machine is 250 rpm, and it is obtained after melt extru...

Embodiment 3

[0046] Soak 5g of carbon fiber in 1mol / L NaOH solution for 24 hours, take it out and filter it, put it into a muffle furnace, burn it at 800°C under aerobic conditions for 30 minutes, rinse it repeatedly with deionized water after cooling, and dry it The carbon fiber after surface activation treatment is obtained.

[0047] Weigh 67g of PP-2 resin, 25g of halogen-free flame retardant, 5g of carbon fiber, 5g of smoke suppressant-3, and 3g of anti-aging additive and put them into a high-speed mixer and mix them evenly. Put the obtained mixed raw material into the main feeding bin of twin-screw extrusion, and put it into the main barrel through the feeding screw. The diameter of the screw of the extruder is 35 mm, the length-to-diameter ratio L / D=36, and the temperature of each section of the main barrel is controlled. (From the feeding port to the nozzle outlet) at 185°C, 190°C, 195°C, 200°C, 210°C, 210°C, the speed of the host machine is 250 rpm, and it is obtained after melt ex...

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Abstract

The invention discloses a high-weather-resistance low-smokiness and high-rigidity flame-retardant reinforced PP blending material and a preparation method thereof. The high-weather-resistance low-smokiness and high-rigidity flame-retardant reinforced PP blending material comprises the following formula in percentage by weight: 50%-80% of PP resin, 10%-30% of halogen-free environment friendly fire retardants, 5%-15% of smoke suppressors, 3%-5% of carbon fibers and 1%-4% of anti-aging auxiliary agents, wherein the carbon fibers are subjected to surface activation treatment. By adopting the technical scheme, the flame-retardant reinforced PP blending material disclosed by the invention has high weather resistance and extremely small smoking amount and can be used for enhancing the surface carbonizing effect of the fire retardants through good synergistic effect of the added carbon fibers and the halogen-free environment-friendly fire retardants, keeping the fire retardance of a material and obviously improving the mechanical property of the material, thereby reflecting the application characteristics of outstanding high property and high environmental friendliness.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a flame-retardant reinforced polypropylene PP blend material with high weather resistance, low smoke generation and high rigidity and a preparation method thereof. Background technique [0002] As one of the most widely used general-purpose plastics, polypropylene has regular molecular structure, high crystallinity, and easy post-processing, so it has excellent mechanical properties and chemical resistance, as well as low cost, low density, and high heat resistance. And other characteristics, its excellent cost performance has a very wide range of applications in many fields such as automobiles, household appliances, food, medical treatment, construction pipes, etc., especially in automotive interior parts has a unique application value. [0003] Polypropylene, as a typical olefin polymer, contains only carbon and hydrogen elements in its molecular structure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/14C08L3/02C08L83/04C08K13/06C08K7/06C08K5/053C08K3/32C08K5/21C08K3/38C08K3/22C08K5/315B29C47/92B29C48/92
CPCC08L23/12B29C48/92B29C2948/92209C08K3/22C08K3/38C08K5/1345C08K5/526C08K7/06C08K13/06C08L2201/02C08L2201/22C08L2205/02C08L2205/03C08L83/04C08L23/14C08K2003/2227
Inventor 吴凤智王伟陈萌陈永东张祥福周文
Owner ZHEJIANG PRET NEW MATERIALS
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