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Low-warping, efficient and inflaming retarding glass fiber reinforced polycarbonate composite material and preparing method thereof

A technology of polycarbonate and composite materials, which is applied in the field of polymer materials, can solve the problems that rarely take into account the high-efficiency flame retardancy, warpage resistance, surface appearance of materials, the high-efficiency fire-proof performance of ultra-thin parts, and the impact on product manufacturing. The surface aesthetics of parts and other issues can be solved, and the effects of excellent fire resistance, simple and controllable production process, and good comprehensive mechanical properties can be achieved.

Inactive Publication Date: 2017-04-26
江苏沃特新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, glass fiber reinforced polycarbonate composite materials often encounter the following problems in the injection molding process: 1) The warping deformation of the injection molded parts is large, which greatly reduces the molding rate and assembly rate; 2) ) cannot achieve the high-efficiency fireproof performance of ultra-thin parts; 3) the toughness of the material is insufficient, and it is easy to crack; 4) the phenomenon of "floating fibers" on the surface seriously affects the surface appearance of the product parts
At the same time, the reinforced polycarbonate material is relatively harsh in the selection of raw materials, the preparation is relatively complicated, the production cost is high, and it is not easy for actual production operation and marketization.
[0007] There are many studies on improving the mechanical properties of glass fiber reinforced polycarbonate materials, but few of them take into account the high-efficiency flame retardancy, warpage resistance, surface appearance and other comprehensive properties of the material.

Method used

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  • Low-warping, efficient and inflaming retarding glass fiber reinforced polycarbonate composite material and preparing method thereof
  • Low-warping, efficient and inflaming retarding glass fiber reinforced polycarbonate composite material and preparing method thereof

Examples

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Embodiment 1

[0040] The present embodiment provides a kind of polycarbonate composite material, and formula component is as shown in table 1, wherein,

[0041] Polycarbonate can be selected from Dow Caliber 301-10, Bayer Makrolon 2405 or products of corresponding specifications on the market.

[0042] The flame retardant is bisphenol A bis(diphenyl phosphate), referred to as BDP.

[0043] The toughening agent is a core-shell type acrylic-silicone rubber, wherein the core is silicon-acrylic rubber, and the shell structure is methyl methacrylate polymer. The trade name used was Metablen S2030 produced by Mitsubishi Rayon.

[0044] The polyester is polybutylene terephthalate (PBT). The trade name selected is GX112 produced by Sinopec Yizheng Chemical Fiber Company.

[0045] The synergistic flame retardant is encapsulated modified polytetrafluoroethylene powder. The selected brand name is DB105 produced by Kang Ruisi Chemical Company.

[0046] Processing aids are mold release agent and an...

Embodiment 2

[0054] This embodiment provides a polycarbonate composite material, and the formulation components are shown in Table 1.

[0055] The selection and preparation method of raw materials are the same as in Example 1.

Embodiment 3

[0057] This embodiment provides a polycarbonate composite material, and the formulation components are shown in Table 1.

[0058] The selection and preparation method of raw materials are the same as in Example 1.

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Abstract

The invention belongs to the technical field of high molecular materials, and particularly relates to a low-warping, efficient and inflaming retarding glass fiber reinforced polycarbonate composite material and a preparing method thereof. The polycarbonate composite material is prepared from, by weight, 20-75% of polycarbonate, 10-50% of glass fiber, 5-20% of crystal whisker, 1-5% of polyester, 1-8% of flexibilizer, 5-20% of flame retardant, 0.1-1% of synergetic fire retardant and 0.1-2% of processing agent, wherein the crystal whisker is calcium magnesium silicate crystal whisker. The polycarbonate composite material has good comprehensive mechanical performance, excellent fireproof performance, low-warping performance, dimensional stability and processing fluidity, is especially applicable to production of injection molding pieces of ultrathin panels, frames and the like, and has broad application prospects in the field of electric products of mobile phones, ultrathin and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a low-warpage, high-efficiency, flame-retardant glass fiber-reinforced polycarbonate composite material and a preparation method thereof. Background technique [0002] Polycarbonate (PC) resin has excellent impact resistance, good creep resistance and dimensional stability, and also has the characteristics of heat resistance, low water absorption, non-toxicity, and excellent dielectric properties. However, polycarbonate materials are sensitive to notches, have insufficient fatigue resistance, and are slightly insufficient in dimensional stability when used in the production of precision parts. Glass fiber filling to reinforce polycarbonate materials is an important modification method to improve the above deficiencies. . Glass fiber reinforced polycarbonate has greatly improved mechanical properties and rigidity, greatly reduced linear expansion coefficient...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L67/02C08L51/04C08L27/18C08K13/06C08K9/06C08K7/14C08K7/10C08K5/134C08K5/526C08J5/04
CPCC08L69/00C08J5/043C08J2369/00C08J2467/02C08L2201/02C08L2201/08C08L2203/20C08L2205/035C08L67/02C08L51/04C08L27/18C08K13/06C08K9/06C08K7/14C08K7/10C08K5/1345C08K5/526
Inventor 邱军
Owner 江苏沃特新材料科技有限公司