Low-luster PC/PBT (polycarbonate/polybutylene terephthalate) alloy material and preparation method thereof

An alloy material and low-gloss technology, which is applied in the field of low-gloss PC/PBT alloy materials and its preparation, can solve the problems of excessive surface gloss and achieve the effects of good fluidity, easy availability of materials, and excellent matte effect

Inactive Publication Date: 2013-01-02
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the PC / PBT alloy material improves the stress cracking resistance and processing difficulty of PC materials, and also improves the impact resistance of PBT materials, it has defects such as excessive surface gloss in automotive interiors and antenna applications.

Method used

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  • Low-luster PC/PBT (polycarbonate/polybutylene terephthalate) alloy material and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0040] see figure 1 , showing a method for preparing a low-gloss PC / PBT alloy material according to an embodiment of the present invention, which includes the following steps:

[0041] S01: Weigh each component according to the formula of the above-mentioned low-gloss PC / PBT alloy material;

[0042] S02: Stir the primary toughening agent, secondary toughening agent, matting agent and other additives, add the PC and PBT, and continue stirring to obtain a mixed material;

[0043]S03: Melt-extrude the mixed material and granulate to obtain the low-gloss PC / PBT alloy material.

[0044] Specifically, in step S01, all materials are weighed accurately, accurate to 0.001 kilogram. The preferred content and type of each component in the low-gloss PC / PBT alloy material formula are as above, and will not be repeated here to save space.

[0045] Step S02 specifically includes adding the main toughening agent, auxiliary toughening agent, matting agent and other additives into the high-s...

Embodiment 1

[0050] Components and weight percentages thereof of the low-gloss PC / PBT alloy material of the present embodiment are:

[0051] PC 65%;

[0052] PBT 17%;

[0053] Main toughening agent 5%;

[0054] Auxiliary toughening agent 2%;

[0055] Matting agent 3%;

[0056] Inorganic filler 3%;

[0057] Compatibilizer 3%;

[0058] Antioxidant 2%.

[0059] Wherein, the main toughening agent is ethylene-butyl methacrylate-glycidyl acrylate copolymer; the auxiliary toughening agent is methyl methacrylate-butadiene-styrene with core-shell structure Structural impact modifier; the inorganic filler is 500-1500 mesh calcium carbonate or talcum powder; the compatibilizer is PCTG; the matting agent is cross-linked styrene-styrene nitrile polymer; The antioxidants are tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester and tris(2,4-di-tert-butylphenol) phosphite 1:1 mixture by weight. The PC is polycarbonate with a refractive index of 1.58-1.61 and a transmit...

Embodiment 2

[0062] Components and weight percentages thereof of the low-gloss PC / PBT alloy material of the present embodiment are:

[0063] PC 70%;

[0064] PBT 12%;

[0065] Main toughening agent 6%;

[0066] Auxiliary toughening agent 1%;

[0067] Matting agent 4%;

[0068] Inorganic filler 4%;

[0069] Compatibilizer 2%;

[0070] Antioxidant 1%.

[0071] Wherein, the main toughening agent is ethylene-butyl methacrylate-glycidyl acrylate copolymer; the auxiliary toughening agent is methyl methacrylate-butadiene-styrene with core-shell structure Structural impact modifier; the inorganic filler is 500-1500 mesh calcium carbonate or talcum powder; the compatibilizer is PCTG; the matting agent is cross-linked styrene-styrene nitrile polymer; The antioxidants are tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester and tris(2,4-di-tert-butylphenol) phosphite 1:1 mixture by weight. The PC is polycarbonate with a refractive index of 1.58-1.61 and a transmit...

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Abstract

The invention provides a low-luster PC / PBT (polycarbonate / polybutylene terephthalate) alloy material which comprises the following components in percentage by weight: 60-72% of PC, 12-18% of PBT, 2-8% of main toughener, 1-4% of auxiliary toughener, 2-7% of flatting agent and 6-15% of other assistants. The main toughener is an ethylene-butyl methacrylate-glycidyl acrylate multipolymer, and the auxiliary toughener is a methyl methacrylate-butadiene-styrene impact modifier in a core-shell structure. The invention also provides a preparation method of the low-luster PC / PBT alloy composite material. The low-luster PC / PBT alloy material has the advantages of excellent comprehensive properties, favorable low-temperature-resistant effect and favorable matte effect, and can be used on automobile internal decorations, satellite receiving antenna and satellite signal receiver shells, and other devices in need of matting.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a low-gloss PC / PBT alloy material and a preparation method thereof. Background technique [0002] Polycarbonate (Polycarbonate, referred to as PC), is a non-crystalline thermoplastic engineering plastic with excellent performance, with outstanding impact resistance, good creep resistance and dimensional stability, good heat resistance, low water absorption, non-toxic and Excellent dielectric properties, is the fastest growing general engineering plastics in recent years. At present, it is widely used in automobiles, electronics, construction, office equipment, packaging, sports equipment, medical care and other fields. With the continuous deepening of modification research, it is rapidly expanding to high-tech fields such as aerospace, computers, and optical discs. However, unmodified polycarbonate still has deficiencies, which are manifested in insufficien...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L67/02C08L23/08C08L33/10C08L33/14C08L25/14C08L25/12C08K3/26C08K3/34C08K5/134C08K5/526B29C47/92B29C48/92
CPCB29C48/04
Inventor 徐东徐永何杰
Owner SHENZHEN KEJU NEW MATERIAL
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