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A kind of polyamide composite material for gas-assisted molding and its preparation method and application

A composite material and gas-assisted molding technology, which is applied in the field of polyamide composite materials, can solve the problems of reduced appearance gloss and unsatisfactory injection, and achieve the effects of easy operation and implementation, improved gloss, and large-scale promotion and application in the market

Active Publication Date: 2021-04-09
中广核俊尔(浙江)新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies in this field, the present invention provides a polyamide composite material for gas-assisted molding, which solves the problems of dissatisfaction in injection and reduced gloss in appearance during the gas-assisted injection molding process of composite materials.

Method used

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  • A kind of polyamide composite material for gas-assisted molding and its preparation method and application
  • A kind of polyamide composite material for gas-assisted molding and its preparation method and application
  • A kind of polyamide composite material for gas-assisted molding and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031]The polyamide composites use the following weight percent raw materials:

[0032]58% nylon 6 (nylon 6), a relative viscosity of 3.2, 30% fibrous filler (no alkali fiberglass 435N, Taishan glass fiber plant, is modified by silane coupling agent) The alkali-free glass fiber, the fiber diameter is 10 ~ 15μm), 5% glass microbead (050-20-215 French SOVITEC), 5% high flow co-polynone resin (melt index 150g / 10min, 200 ° C / 1.2kg, Zhuzhou era New materials), 0.2% heat stabilizers (leading HS02, mixture composed of copper and potassium from 1: 8), a mixture of potassium iodide, calcium stearate (calcium stearate), 1% pigment (black Mother 3785, Cabot Company).

[0033]Add nylon 6, high flow co-agglon resin, heat stabilizer, processing aid, and pigment to high-speed mixer 3000 rpm to add two-screw extruder from the main feedab to the main feedab to add the fibrous filler and glass microbead In the side feed hopper, in the twin screw extruder, the polyamide composite is obtained after extru...

Embodiment 2

[0036]The polyamide composites use the following weight percent raw materials:

[0037]63% nylon 6 (new Meida, a number of nylon 6), relative viscosity of 3.2), 30% fibrous filler (unique base glass fiber 435N, Taishan glass fiber plant, adopted surface via silane coupling agent modified The alkali-free glass fiber, the diameter of the fiber is 10 ~ 15μm), 5% glass microbead (050-20-215 France SOVITEC), 0.2% heat stabilizer (US leading HS02, is from 1: 8 iodide of 1: 8) Mixtures of potassium iodide), 0.8% processing auxiliaries (calcium stearate), 1% pigment (black mother 3785, Carbot).

[0038]Add nylon 6, heat stabilizers, processing aids and pigments to high-speed mixer 3000 rpm to mix 1min after 1min, add double screw extruders from the main feed, and add fibrous filler and glass beads from the side feed bracket. In the screw extruder, the polyamide composite is obtained after extruding the double screw extruder.

[0039]The temperature setting of 265 ° C, 270 ° C, 265 ° C, 260 ° C, 250 ...

Embodiment 3

[0041]The polyamide composites use the following weight percent raw materials:

[0042]63% nylon 6 (new Meida, a number of nylon 6), relative viscosity of 3.2), 30% fibrous filler (unique base glass fiber 435N, Taishan glass fiber plant, adopted surface via silane coupling agent modified The alkali-free glass fiber, the diameter of the fiber is 10 ~ 15 μm), 5% high flow co-gaunon resin (melt index 150g / 10 min, 200 ° C / 1.2kg, Zhuzhou era new material), 0.2% heat stabilizer (US leading HS02, by Mixtures of the mass ratio of 1: 8 copper and potassium iodide), 0.8% processing auxiliaries (calcium stearate), 1% pigment (black mother 3785, Cabt).

[0043]The nylon 6, high flow co-aggregon resin, heat stabilizer, processing aids and pigments were added to 3000 rpm in a high-speed mixture for 1 min and added a double screw extruder from the main feedab to the double screw extruder, and fed the fibrous filler from the side feed In the double screw extruder, the polyamide composite is obtained ...

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Abstract

The invention discloses a polyamide composite material for gas-assisted molding. The raw material composition includes: 50%-70% nylon 6; 20%-40% fibrous filler; 0%-5% % glass beads; 0% to 5% high flow copolymerized nylon resin; 0.01% to 2% heat stabilizer; 0.1% to 2% processing aids; 0% to 2% pigment. The invention also discloses a preparation method of the polyamide composite material, which can be realized by using the existing equipment twin-screw extruder, easy to operate and implement, easy to industrialized large-scale production, and has broad application prospects. The polyamide composite material of the present invention can be used for gas-assisted molding of parts that require high gloss in appearance, such as automobile door handles, etc., and the material solves the problems of dissatisfaction with injection and reduced gloss in appearance during gas-assisted injection molding of composite materials question.

Description

Technical field[0001]The present invention relates to the technical field of polyamide composites, and more particularly to a polyamide composite material for gas-auxiliary molding and a preparation method thereof.Background technique[0002]Plastic parts have the advantages of large design space, low processing cost, high degree of finish, anti-rust resistance, and weight is significantly lower than that in the modern automotive industry, is an important direction of energy saving and emission reduction. With the continuous development of injection molding technology, various new types of injection molding technologies are gradually maturing, including the use of gas-adjuvant-forming techniques that are increasingly common, and the technology can further reduce the weight of plastic parts under the premise of ensuring the requirements of the application, in some Widely adopted in the automotive plastic article, the gas auxiliary injection molding process is first injecting the defaul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/02C08L77/00C08K13/06C08K9/06C08K7/14C08K7/20
CPCC08L77/02C08L2205/02C08L77/00C08K13/06C08K9/06C08K7/14C08K7/20
Inventor 陈佰全陈晓敏陈智文林立杜晓华田际波
Owner 中广核俊尔(浙江)新材料有限公司
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