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Environment protecting anti-deformation fire retardant reinforced polycarbonat and its production

A polycarbonate resin and anti-warping technology, which is applied in the field of environment-friendly anti-warping, high-efficiency flame-retardant reinforced polycarbonate resin and its preparation, can solve problems such as stress cracking, high melt viscosity, and notch sensitivity, and achieve benefits Effects of processing and molding, reducing interfacial adhesion, and improving dispersion

Inactive Publication Date: 2006-09-06
KINGFA SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Polycarbonate (PC) has many excellent properties and excellent comprehensive performance, but there are also some defects such as sensitivity to notch, easy stress cracking, poor wear resistance, limited aging resistance and chemical resistance, high melt viscosity, The processing fluidity is poor, and it is difficult to form large-size and thin-walled parts, so it needs to be further improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The specific operation steps of embodiment are:

[0015] 1. Mix PC resin, flame retardant, light and heat stabilizer, coupling agent and processing aid in a high-speed mixer.

[0016] 2. Send the above mixed materials into the twin-screw extruder from the feeder with precision metering for preliminary mixing, then introduce the compounded glass fiber into the mixed resin that has been initially melted, and extrude In the screw barrel of the machine, the material is sheared and mixed at high speed by the screw, and then extruded through the head, drawn, cooled, granulated and packaged.

[0017] The temperature of each partition of the screw barrel should be kept at 250°C.

[0018] See Table 1 for each component and parts by weight in Examples 1, 2, and 3.

[0019] The prepared resin was injection-molded into a standard sample for testing according to the standard size. The physical properties in the examples were tested according to the national standards of my country...

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PUM

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Abstract

An environment protecting type warp-resistant flame-retarding strengthened polycarbonate resin is prepared from the polycarbonate resin (100 wt. portions), flame-retarding agent (0.2-1), glass fibres (10-50) and assistant (1-5). A process for preparing said resin is also disclosed. Its advantages are no Br, Cl and P elements, high flame-retarding and warp-resistant effect, and high size stability.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to an environment-friendly anti-warping and high-efficiency flame-retardant reinforced polycarbonate resin and a preparation method thereof. Background technique [0002] Polycarbonate (PC) is an amorphous, non-toxic, tasteless, odorless, transparent and colorless amorphous thermoplastic engineering plastic. It is characterized by comprehensive and balanced mechanical properties, thermal properties and electrical properties, especially the impact toughness is the crown of general thermoplastics, and the creep is quite small and the dimensional stability is good. It has good heat resistance and can be used for a long time at -60-120°C. The heat distortion temperature is 130-140°C and the glass transition temperature is 149°C. It has no obvious melting point and is in a molten state at 220-230°C. 310°C. Flammability is a self-extinguishing resin. PC resin has a high glass transitio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08K7/14
Inventor 刘思杨欧阳晓岳宁方林黄险波宋子明袁志敏
Owner KINGFA SCI & TECH CO LTD