Halogen-free flame retardant polycarbonate (PC) composite material and preparation method thereof

A flame-retardant polycarbonate and composite material technology, applied in the field of polymer materials, can solve problems such as difficulty in meeting flame-retardant performance requirements, material fire, and inherent flame-retardant performance, so as to prevent dripping and improve impact strength , the effect of good application prospects

Inactive Publication Date: 2015-03-18
QINGDAO XINZHAN PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PC itself has a certain flame retardancy. According to the relative molecular mass and different grafting conditions, the oxygen index is 21% to 24%, and the flame retardancy reaches UL94 V-2 level. In addition, the inherent flame retardancy of PC is still difficult to meet the flame retardancy requirements of PC in some application fields, and the hot melt dripping when PC burns can easily cause nearby materials to catch fire

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A halogen-free flame-retardant polycarbonate (PC) composite material, the composition of which is: polycarbonate (PC) 88%, perfluorobutane sulfonate (PPFBS) 0.1%, organic montmorillonite 10% soil, 0.5% polytetrafluoroethylene (PTFE), 0.5% bisphenol A bisglycidyl ether, hindered phenolic antioxidant 1010 and phosphite antioxidant 168 in a mass ratio of 1:1 0.4%, pentaerythritol stearate (PETS) 0.5%.

[0018] Preparation method: (1) Dry polycarbonate (PC) in a blast dryer at 110°C-130°C for 3-4 hours, and organic montmorillonite at 80°C-120°C for 30-45 minutes , stand-by; (2) Weigh the dry polycarbonate (PC), organic montmorillonite and other components according to the weight ratio, add them to the high-speed mixer respectively, and stir for 5 to 30 minutes to make the mixture evenly Discharging; (3) Add the mixture in step (2) into a twin-screw extruder, melt, knead and extrude at 260°C to 290°C, cool and granulate to obtain the finished product.

Embodiment 2

[0020] A halogen-free flame-retardant polycarbonate (PC) composite material, the composition of which is: polycarbonate (PC) 93%, potassium diphenyl sulfone sulfonate (KSS) 0.05%, organic Mongolia Compounding of 5% soil removal, 0.5% polytetrafluoroethylene (PTFE), 0.65% bisphenol A diglycidyl ether, hindered phenolic antioxidant 1010 and phosphite antioxidant 168 at a ratio of 1:1 by mass Pentaerythritol Stearate (PETS) 0.2%, Pentaerythritol Stearate (PETS) 0.6%.

[0021] Preparation method: (1) Dry polycarbonate (PC) in a blast dryer at 110°C-130°C for 3-4 hours, and dry organic montmorillonite at 80°C-120°C for 30-45 minutes , stand-by; (2) Weigh the dry polycarbonate (PC), organic montmorillonite and other components according to the weight ratio, add them to the high-speed mixer respectively, and stir for 5 to 30 minutes to make the mixture evenly Discharging; (3) Add the mixture in step (2) into a twin-screw extruder, melt, knead and extrude at 260°C to 290°C, cool and ...

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Abstract

The invention discloses a halogen-free flame retardant polycarbonate (PC) composite material and a preparation method thereof. The halogen-free flame retardant polycarbonate (PC) composite material is prepared from the following components in percentage by mass: 75%-95% of polycarbonate (PC), 0.05%-0.1% of a halogen-free flame retardant, 5%-15% of organic montmorillonite, 0.1%-1% of anti-dropping agent, 0.1%-1% of a hydrolysis-resistant stabilizer, 0.1%-0.5% of an antioxidant and 0.1%-1% of a lubricant. Compared with the prior art, a sulfonate halogen-free flame retardant and organic montmorillonite adopted by the preparation method have good flame-retardant synergistic effect, so that the prepared polycarbonate (PC) composite material has high flame resistance, is halogen-free, non-toxic, safe, efficient, capable of achieving UL-94V-0 level and preventing melting and dropping and also capable of improving the performances such as impact strength, rigidity, heat resistance and processing performance of the material, and has good potential and application prospect.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a halogen-free flame-retardant polycarbonate (PC) composite material and a preparation method thereof. Background technique [0002] Polycarbonate (PC) is a thermoplastic engineering plastic with excellent comprehensive properties. It has outstanding impact resistance, creep resistance and dimensional stability. It can maintain high mechanical strength in a high temperature range and is non-toxic. , with excellent dielectric properties, is the engineering plastic with the fastest growth and the largest production capacity in recent years. PC itself has a certain flame retardancy. According to the relative molecular mass and different grafting conditions, the oxygen index is 21% to 24%, and the flame retardancy reaches UL94 V-2 level. The inherent flame retardancy of PC is still difficult to meet the flame retardancy requirements of PC in some application fields, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08K13/02C08K5/42C08K3/34C08K5/134C08K5/526
CPCC08L69/00C08L2201/02C08L2201/08C08L2201/22
Inventor 不公告发明人
Owner QINGDAO XINZHAN PLASTIC
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