Fire and heat resisting self-lubricating polycarbonate composite with nice appearance and preparation method thereof

A technology of polycarbonate and polycarbonate resin, which is applied in the field of good-appearance flame-retardant, heat-resistant, self-lubricating polycarbonate compositions and their preparation fields to achieve the effects of reducing costs, improving surface appearance and reducing material costs

Inactive Publication Date: 2010-05-26
KINGFA SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] But so far, there is no patent disclosure that has good appearance, flame retardan

Method used

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  • Fire and heat resisting self-lubricating polycarbonate composite with nice appearance and preparation method thereof
  • Fire and heat resisting self-lubricating polycarbonate composite with nice appearance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0027] Examples 1-6: Prepared by one-step method of conventional mixing extrusion granulation.

[0028] Example 7-9 series: prepared by a two-step method, the specific steps are as follows:

[0029] First, mix polytetrafluoroethylene micropowder, ultra-high molecular weight polyethylene, maleic anhydride grafted polyethylene, flame retardant, auxiliary agent and a certain amount of polycarbonate resin according to the distribution ratio of each formula component in Example 7-9 of Table 1. After mixing in the high mixer, extrude and granulate at 230-260°C to make one-step material, then mix the one-step material and the remaining polycarbonate resin evenly in the high mixer, or place them in two high-precision metering In the feeding scale, the feeding is automatically controlled in proportion, and the composition pellets are obtained by extruding and granulating for the second time in the twin-screw extruder, while the glass fiber is fed in proportion by side feeding, and can ...

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PUM

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Abstract

The invention discloses a fire and heat resisting self-lubricating polycarbonate composite with a nice appearance and a preparation method thereof. The composite contains 5-25 percent of polytetrafluoroethylene micro powder, 0-8 percent of ultra-high molecular weight polyethylene, 0-3 percent of maleic acid grafted polyolefin, 0-15 percent of fire retardant, 0-40 percent of alkali-free glass fibre, 0.1-5 percent of assistant and the balance of panlite. The composite not only has good heat resistance and mechanical properties, durable self lubricity and fire resistance but also has nice surface appearance, and thereby, the composite can be applied to various injection-molded parts demanding high rigidity, high heat resistance, fire resistance as well as abrasion resistance.

Description

technical field [0001] The invention relates to the field of polymer composite materials, in particular to a flame-retardant and heat-resistant self-lubricating polycarbonate composition with good appearance and a preparation method thereof. Background technique [0002] With the increasing popularity of replacing steel with plastic, various plastic materials have been widely used to replace steel and other metals in various sliding parts (such as bearings, guide rails, slide plates, piston rings) and connecting rotating structural parts. [0003] At present, a variety of plastic materials with self-lubricating and wear-resistant properties have been developed. The patents 95197725.3 and 96192218.4 applied by U.S. Hoechst Man-made Co., Ltd. all disclose a polyethylene-modified polyoxymethylene composition, which can be used to manufacture gears, pulleys, rollers and bearings. Lin Anliang also disclosed a polyurethane-modified polyoxymethylene composition in patent 03151026....

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L23/06C08L51/06C08K7/14B29B9/12B29C47/10C08L27/18
Inventor 何继辉欧阳晓岳徐布衣刘思杨
Owner KINGFA SCI & TECH CO LTD
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