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Glass fiber reinforced PA6 composite material capable of improving floating fiber phenomenon and achieving high surface smoothness and preparation method thereof

A composite material and high surface technology, applied in the field of polyamide, can solve the problems of no popularization and application, complex manufacturing process, limited improvement effect, etc., and achieve the effects of low preparation cost, simple manufacturing process, and suitability for commercial promotion.

Inactive Publication Date: 2020-04-28
SHANGHAI PRET COMPOSITES +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the above methods used to improve the defects of polymer floating fibers either have limited improvement effects, or the manufacturing process is complicated and costly, which ultimately leads to the failure to achieve large-scale promotion and application.

Method used

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  • Glass fiber reinforced PA6 composite material capable of improving floating fiber phenomenon and achieving high surface smoothness and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] (1) Preparation of improved floating fiber, high surface finish functional masterbatch:

[0049] In parts by weight, 76.5 parts of hyperbranched nylon 6 resin made by the laboratory, 20 parts of lubricant, 0.5 part of antioxidant, and 3 parts of polyamide 6 maleic anhydride grafts are added to the high-speed mixer together. After mixing evenly, it is then added to a twin-screw extruder, melted, extruded, cooled, and pelletized to prepare functional masterbatches with improved floating fibers and high surface smoothness.

[0050] The processing setting temperatures of zones I to X of the twin-screw extruder are 220°C, 225°C, 230°C, 230°C, 235°C, 235°C, 235°C, 235°C, 240°C, and 240°C. The rotational speed of the main screw is 250r / min, and the temperature of the water tank is 30°C.

[0051] (2) Preparation of low floating fiber, high surface finish short glass fiber reinforced polyamide 6 composite material:

[0052] In parts by weight, by parts by weight, 1 part of the h...

Embodiment 2

[0055] (1) Preparation of improved floating fiber, high surface finish functional masterbatch:

[0056] In parts by weight, 76.5 parts of hyperbranched nylon 6 resin made by the laboratory, 20 parts of lubricant, 0.5 part of antioxidant, and 3 parts of polyamide 6 maleic anhydride grafts are added to the high-speed mixer together. After mixing evenly, it is then added to a twin-screw extruder, melted, extruded, cooled, and pelletized to prepare functional masterbatches with improved floating fibers and high surface smoothness.

[0057] The processing setting temperatures of zones I to X of the twin-screw extruder are 220°C, 225°C, 230°C, 230°C, 235°C, 235°C, 235°C, 235°C, 240°C, and 240°C. The rotational speed of the main screw is 250r / min, and the temperature of the water tank is 30°C.

[0058] (2) Preparation of low floating fiber, high surface finish short glass fiber reinforced polyamide 6 composite material:

[0059] In parts by weight, by parts by weight, 4 parts of th...

Embodiment 3

[0062] (1) Preparation of improved floating fiber, high surface finish functional masterbatch:

[0063] In parts by weight, hyperbranched nylon 6 resin made by the laboratory: 51 parts, lubricant: 45 parts, antioxidant 1.0 part, polyamide 6 maleic anhydride graft: 3 parts are added to the high-speed mixer together After mixing evenly in the medium, it is added to the twin-screw extruder, melted, extruded, cooled, and pelletized by the twin-screw extruder to prepare functional masterbatches with improved floating fibers and high surface smoothness.

[0064] The processing temperatures in zones I to X of the twin-screw extruder are 220°C, 225°C, 230°C, 230°C, 235°C, 235°C, 235°C, 235°C, 240°C, and 240°C in sequence. The rotational speed of the main screw is 300r / min, and the temperature of the water tank is 45°C.

[0065] (2) Preparation of low floating fiber, high surface finish short glass fiber reinforced polypropylene composite material:

[0066] In parts by weight, by par...

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Abstract

The invention discloses a glass fiber reinforced PA6 composite material capable of improving a floating fiber phenomenon and achieving high surface smoothness and a preparation method thereof. The composite material mainly comprises the following components in parts by weight: 1-4 parts of hyperbranched polyamide 6 functional masterbatch with low viscosity, high flowability and a self-lubricatingproperty, 27-86 parts of conventional polyamide 6 resin, 10-60 parts of short glass fibers, 0.5-1.0 part of an antioxidant and 3-8 parts of other assistants. When a blend of the functional masterbatchand glass fiber reinforced polyamide 6 resin is extruded from a double-screw extruder or an injection molding machine, under the dual effects of the expansion effect of the high polymer extrudate andthe self-lubrication of a lubricant, the functional masterbatch resin with low viscosity and high fluidity, toner and an additive firstly flow towards the outer side of the melt and are preferentially enriched on the surface layer of the material, so that the purpose of improving the floating fiber phenomenon of a final part is achieved while a small amount of the functional masterbatch is added.

Description

technical field [0001] The invention relates to a functional master batch with improved floating fiber and high surface finish, a glass fiber reinforced PA6 composite material and a preparation method thereof, which belong to the technical field of polyamide. Background technique [0002] Glass fiber reinforced PA6 composites are widely used in automobiles, home appliances and electronic appliances because of their excellent mechanical properties, creep resistance, fatigue resistance and chemical corrosion resistance. [0003] However, when the glass fiber in the PA6 composite material reaches a certain content, the surface floating fiber and smoothness of the auto parts prepared by the glass fiber reinforced PA6 material are pain points and difficulties to be solved in the industry, which greatly limits the glass fiber. The application of fiber-reinforced PA6 materials in automobiles, home appliances, and electronic and electrical components, especially those with high appe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L51/08C08L83/04C08K13/04C08K7/14
CPCC08L77/02C08L2205/035C08L2205/025C08K2201/003C08K2201/004C08L51/08C08L83/04C08K13/04C08K7/14
Inventor 王勇张海生蔡青周文
Owner SHANGHAI PRET COMPOSITES
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