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Wollastonite enhanced polycarbonate material and preparation method thereof

A technology of polycarbonate and polycarbonate resin, which is applied in the field of plastic processing, and can solve problems such as rough surface, unstable performance of precision instruments, and sensitivity to notches.

Inactive Publication Date: 2011-08-24
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing polycarbonate materials are sensitive to notches and have insufficient wear resistance. When the existing polycarbonate materials are used in precision instruments, the performance of the precision instruments will be unstable.
[0003] At present, polycarbonate materials are often reinforced and modified with glass fibers, but the floating fibers on the surface are serious, and the floating fibers on the surface are difficult to handle. When using the existing polycarbonate materials to inject products, the product has poor dimensional stability and rough surface. , thus limiting the application range of polycarbonate materials

Method used

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  • Wollastonite enhanced polycarbonate material and preparation method thereof
  • Wollastonite enhanced polycarbonate material and preparation method thereof
  • Wollastonite enhanced polycarbonate material and preparation method thereof

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preparation example Construction

[0029] The embodiment of the present invention also provides a preparation method of the above-mentioned wollastonite-reinforced polycarbonate material, and the process flow is as follows figure 1 shown. The method includes the following steps:

[0030] S1: Weigh out polycarbonate resin, wollastonite, toughening agent and wollastonite surface activation solution according to the formula of the above-mentioned wollastonite-reinforced polycarbonate material;

[0031] S2: stirring and mixing wollastonite and the wollastonite surface activation solution to obtain an activated wollastonite mixture;

[0032] S3: adding the polycarbonate resin and the toughening agent to the wollastonite mixture, and stirring to form a mixture;

[0033] S4: The mixed material is extruded and pelletized to obtain the wollastonite-reinforced polycarbonate material.

[0034] Specifically, in step S1 of the above-mentioned wollastonite-reinforced polycarbonate material preparation method, the proporti...

Embodiment 1

[0045] The formula components in weight percent of wollastonite reinforced polycarbonate material are as follows:

[0046] The molecular weight is preferably 85% of bisphenol A polycarbonate resin with a molecular weight of 20,000, 8% of wollastonite, 1% of wollastonite surface activation liquid, and 6% of toughening agent for the copolymer of methacrylate and acrylate. Among them, wollastonite has an average aspect ratio of 10, a particle size of 15 μm, and a pH of 7. The wollastonite surface activation solution is 3-aminopropyltriethoxysilane and anhydrous xylene with a volume ratio of 1:1. composed mixture.

[0047] The preparation method of the wollastonite-reinforced polycarbonate material is as follows:

[0048] S11: first put the polycarbonate resin into a drying oven, and dry the polycarbonate resin at a temperature of 120° C. for 3 hours, and then weigh each component according to the formula of the above wollastonite-reinforced polycarbonate material;

[0049] S12:...

Embodiment 2

[0053] The formula components in weight percent of wollastonite reinforced polycarbonate material are as follows:

[0054] The molecular weight is preferably 30,000 molecular weight bisphenol A polycarbonate resin 85%, wollastonite 11%, wollastonite surface activation liquid 1%, methyl methacrylate, butadiene and styrene terpolymer. Copolymer toughener 3%. Among them, the wollastonite has an average aspect ratio of 8, a particle size of 20 μm, and a pH of 7. The wollastonite surface activation solution is composed of γ-glycidyloxypropyltrimethoxysilane and toluene with a volume ratio of 1:1.5. composition of the mixture.

[0055] The preparation method of the wollastonite-reinforced polycarbonate material is as follows:

[0056] S21: first put the polycarbonate resin into a drying oven, and dry the polycarbonate resin at a temperature of 120° C. for 3 hours, and then weigh each component according to the above formula of the wollastonite-reinforced polycarbonate material;

...

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Abstract

The invention discloses a wollastonite enhanced polycarbonate material and a preparation method thereof. The wollastonite enhanced polycarbonate material comprises the following formula components in percentage by weight: 70-90% of polycarbonate resin, 5-20% of wollastonite, 3-6% of flexibilizer and 1-3% of wollastonite surface activator. The wollastonite enhanced polycarbonate material has good notch resistance performance and wear-resisting property, stable size, smooth and flat surface and comprehensive physical properties because all components within a proper range mutually act in the extrusion process. The preparation method of the wollastonite enhanced polycarbonate material is characterized in that extrusion and granulation are finished in one step by mixing reaction. The preparation method has the advantages of simple technology, high benefit and low cost, is convenient to operate and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of plastic processing, and particularly relates to a wollastonite-reinforced polycarbonate material and a preparation method thereof. Background technique [0002] Existing polycarbonate materials have good mechanical properties, thermodynamic properties and electrical properties, especially excellent impact strength, rigidity and dimensional stability. However, the existing polycarbonate materials are sensitive to notch and have insufficient wear resistance. When the existing polycarbonate materials are used in precision instruments, the performance of the precision instruments will be unstable. [0003] At present, polycarbonate materials are often reinforced and modified with glass fibers, but the surface floating fibers are serious, and the surface floating fibers are difficult to handle. When the existing polycarbonate materials are used for injection molding products, the dimensional stability of the p...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08K13/06C08K9/06C08K9/04C08K3/34B29B9/06B29C47/92B29C48/92
CPCB29C48/40B29C48/875B29C48/92B29C2948/92704B29C2948/92895B29C2948/92904
Inventor 徐东徐永潘明熙
Owner SHENZHEN KEJU NEW MATERIAL
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