High-transparency flame-retarding polycarbonate thin film/sheet material as well as preparation method and application thereof

A technology of flame-retardant polycarbonate and polycarbonate, which is applied in the field of high-transparency flame-retardant polycarbonate film/sheet and its preparation, can solve the problem of unfavorable compounding and the influence of blended phosphorus-based flame-retardant polycarbonate on transparency, Problems such as linear increase of melt index

Inactive Publication Date: 2018-05-22
四川东方绝缘材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although pure polycarbonate resins, such as bisphenol A polycarbonate, have a melt index of only 3 to 10 g / 10 min at 300 °C and 1.2 kg, the blended phosphorus-based flame-retardant polycarbonate ( That is: polycarbonate + phosphorus-containing flame retardant as the main resin material) the melt index of the system is as high as 40-60g / 10min at 300°C and 1.2kg, that is, the melt index increases linearly, which is not conducive to the later compounding with other materials. Also due to the addition of phosphorus-based flame retardants, the transparency of the blended phosphorus-based flame-retardant polycarbonate is greatly affected

Method used

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  • High-transparency flame-retarding polycarbonate thin film/sheet material as well as preparation method and application thereof
  • High-transparency flame-retarding polycarbonate thin film/sheet material as well as preparation method and application thereof
  • High-transparency flame-retarding polycarbonate thin film/sheet material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 9

[0067] A highly transparent flame-retardant polycarbonate film / sheet is: 100 parts by mass of bisphenol A polycarbonate, 2 parts by mass of long-chain branched polycarbonate, 0.1 parts by mass of flame retardant A, A mixture of 3 parts by mass of agent B, 0.2 parts by mass of chain extender, 0.5 parts by mass of antioxidant and 0.2 parts by mass of heat stabilizer is melted and extruded by a salivating extruder at a temperature of 240°C, and cast on a cold roll at a temperature of 80°C Casting and cooling to obtain highly transparent flame-retardant polycarbonate film / sheet.

Embodiment 10

[0069] A highly transparent flame-retardant polycarbonate film / sheet is: 100 parts by mass of bisphenol A polycarbonate, 15 parts by mass of long-chain branched polycarbonate, 10 parts by mass of flame retardant A, and 10 parts by mass of flame retardant B A mixture of 20 parts by mass, 2 parts by mass of chain extender, 1 part by mass of antioxidant and 2 parts by mass of heat stabilizer is melted and extruded by a salivating extruder at a temperature of 320°C, and cast on a cold roll at a temperature of 110°C , cooling to obtain highly transparent flame-retardant polycarbonate film / sheet.

Embodiment 11

[0071] A highly transparent flame-retardant polycarbonate film / sheet is: 100 mass parts of bisphenol A polycarbonate, 8.5 mass parts of long-chain branched polycarbonate, 5 mass parts of flame retardant A, flame retardant The mixture of 11.5 parts by mass of B, 1.1 parts by mass of chain extender, 0.75 parts by mass of antioxidant and 1.1 parts by mass of heat stabilizer is melted and extruded by a salivating extruder at a temperature of 280°C, and cast on a cold roll at a temperature of 95°C Casting and cooling to obtain a highly transparent flame-retardant polycarbonate film / sheet.

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Abstract

The invention discloses a high-transparency flame-retarding polycarbonate thin film/sheet material as well as a preparation method and application thereof. The high-transparency flame-retarding polycarbonate thin film/sheet material is characterized by being prepared by melting and extruding a mixture of 100 parts of bisphenol A type polycarbonate by mass, 2 to 15 parts of long-chain branched polycarbonate by mass, 0.1 to 10 parts of a flame retardant A by mass, 3 to 20 parts of a flame retardant B by mass, 0.2 to 2 parts of a chain extender by mass, 0.5 to 1 part of an antioxidant by mass and0.2 to 2 parts of a thermal stabilizer by mass through a casting extruder at 240 DEG C to 320 DEG C, and casting, pouring and cooling on a cold roller at 80 to 110 DEG C; the light transmittance of the thin film/sheet material is 86 percent to 95 percent; the flame-retarding performance of different thicknesses can reach UL94VTM-0 or UL94V-0 respectively; the thin film/sheet material can be compounded with carbon fibers and glass fibers to manufacture composite materials of household appliance/computer shells, automobile interior and exterior trimmings and the like; the high-transparency flame-retarding polycarbonate thin film/sheet material has the advantages of good heat dissipation, light weight, good wear resistance and easiness for coloring.

Description

technical field [0001] The invention belongs to polycarbonate film / sheet and its preparation, and relates to a highly transparent flame-retardant polycarbonate film / sheet and its preparation method and application. The highly transparent flame-retardant polycarbonate film / sheet of the present invention is suitable for manufacturing household appliances / computer casings, automobile interior and exterior decorations, etc. by compounding with carbon fibers and glass fibers, and has the characteristics of good heat dissipation, light weight, good wear resistance, and easy coloring. composite material. Background technique [0002] There are two types of traditional laptop casings, car interiors or TV frame materials, metal casings and plastic casings. The plastic shell material includes epoxy resin material, ABS material, polycarbonate / glass fiber composite material and carbon fiber material. The epoxy resin material is heat-cured to form a shape, with stable dimensions and hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L83/04C08L85/02C08K13/02C08K3/32C08K5/523C08K5/134C08K5/526C08K5/524C08J5/18C08K13/04C08K7/14C08K7/06
Inventor 赵贵红马雅琳何航罗春明李建学
Owner 四川东方绝缘材料股份有限公司
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