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Preparation method of polycarbonate used for blow molding

A technology of polycarbonate and raw materials, which is applied in the field of blow-molded polycarbonate and its preparation, can solve the problems of insufficient supply, high cost, and difficult preparation, and achieve the effects of good compatibility, improved performance, and simple and convenient preparation

Inactive Publication Date: 2010-10-20
东莞市沃捷塑胶原料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To solve the problems of insufficient raw material supply, high cost, and difficult preparation of bottle blowing grade polycarbonate at present, and provide a polycarbonate with low production cost, simple preparation, and guaranteed performance of blow bottle grade polycarbonate and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Weigh 100kg of polycarbonate, 0.1kg of polyacrylic polymer containing multiple epoxy functional groups, 0.5kg of 4,4'-thiobis(6-tert-butyl-3-methylphenol), 2,4 -0.02kg of dihydroxybenzophenone, 0.02kg of toner, pour into the mixer and stir evenly, then put the evenly stirred mixed raw materials into the single-screw extruder, and set the temperature of each heating zone of the single-screw extruder respectively It is 260°C in the first zone, 260°C in the second zone, 270°C in the third zone, 270°C in the fourth zone, and 270°C in the fifth zone.

Embodiment 2

[0021] Weigh 100kg of polycarbonate, 0.2kg of polyacrylic polymer containing multiple epoxy functional groups, 0.5kg of 4,4'-thiobis(6-tert-butyl-3-methylphenol), 2,4 -0.02kg of dihydroxybenzophenone and 0.02kg of toner, pour into the mixer and stir evenly, then put the evenly stirred mixed raw materials into the single screw extruder, and set the temperature of each heating zone of the single screw extruder to 260°C in the first zone, 260°C in the second zone, 270°C in the third zone, 270°C in the fourth zone and 270°C in the fifth zone.

Embodiment 3

[0023] Weigh 100kg of polycarbonate, 0.3kg of polyacrylic polymer containing multiple epoxy functional groups, 0.5kg of 4,4'-thiobis(6-tert-butyl-3-methylphenol), 2,4 -Dihydroxybenzophenone 0.02kg, toner 0.03kg, pour into the mixer and mix evenly, then put the uniformly mixed raw materials into the single-screw extruder, set the temperature of each heating zone of the single-screw extruder to one Zone 270°C, zone two 270°C, zone three 280°C, zone four 280°C, zone five 280°C, can be granulated by melt, mixing, extrusion.

[0024] The components of the raw materials in the above embodiments are all commercially available products.

[0025] After blow molding use inspection, the products of the above embodiments all meet the national standard of QB2460-1999 "Polycarbonate Drinking Water Tank".

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Abstract

The invention relates to the technical field of polycarbonate (PC), in particular to the polycarbonate used for blow molding and a preparation method thereof. The raw material in the preparation method comprises the following components in percentage by mass: 98 to 100 percent of the polycarbonate, 0.1 to 0.5 percent of chain extender, 0.1 to 1.0 percent of antioxidant, 0.01 to 0.5 percent of toner, and 0.01 to 0.5 percent of ultraviolet absorber. The polycarbonate used for the blow molding not only can be prepared simply and conveniently but also can greatly improve the yield of bottle blowing grade polycarbonate and reduce the cost; besides, blow molding uses prove that the performance of the polycarbonate for the blow molding can completely replace the bottle blowing grade polycarbonate of companies such as American GE, Germany Bayer and the like, and the polycarbonate for the blow molding meets requirements on materials for preparing drinking water buckets.

Description

Technical field: [0001] The invention relates to the technical field of polycarbonate (PC), in particular to a polycarbonate used for blow molding and a preparation method thereof. Background technique: [0002] Polycarbonate is colorless, transparent, heat-resistant, impact-resistant, flame-retardant, and has good mechanical properties at normal operating temperatures. Compared with polymethyl methacrylate with similar performance, polycarbonate has good impact resistance, high refractive index and good processing performance. It has UL94V-0 flame retardant performance without additives. With the increasing production scale of polycarbonate, the price difference between polycarbonate and polymethyl methacrylate is shrinking. Common daily applications include optical discs, eye lenses, water bottles, bullet-proof glass, goggles, bank bullet-proof glass, car lampshades and so on. Polycarbonate can be injection molded, extruded, molded, blow molded, thermoformed, printed, bonded,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L33/14B29B9/06B29B9/12B29C47/92B29C48/92
CPCB29C48/9185B29C48/04B29C48/10B29C48/92B29C2948/92704B29C2948/92895
Inventor 邓文辉
Owner 东莞市沃捷塑胶原料有限公司
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