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A method for extrusion molding of graphene-modified nylon 66 high-strength composite thin products

A graphene modification and extrusion molding technology, which is applied in the field of extrusion molding of graphene-modified nylon 66 high-strength composite thin products, can solve the problems of insufficient mechanical properties of nylon 66 thin products, and achieve the goal of improving interface bonding force Effect

Active Publication Date: 2017-02-22
XIAN YUANTONG KNIGHT AUTOMOTIVE SAFETY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of insufficient mechanical properties of existing nylon 66 thin products, and to provide a method for extrusion molding of graphene-modified nylon 66 high-strength composite thin products

Method used

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  • A method for extrusion molding of graphene-modified nylon 66 high-strength composite thin products
  • A method for extrusion molding of graphene-modified nylon 66 high-strength composite thin products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The 0.1 kg diameter is 5μm, the thickness is 2nm, and the specific surface area is 300m 2 9.9 kilograms of Nylon 66 and 0.001 kilograms of thermal stabilizer after vacuum-drying multi-layer graphene / g were added into the twin-screw extruder by means of metering and feeding, and mixed uniformly and blended for 2 minutes at 270 ° C; Then extrusion granulation obtains graphene-modified nylon 66 blended particles; the above-mentioned graphene-modified nylon 66 blended particles are added to a thin product extruder and extruded to obtain graphene-modified nylon 66 nanocomposite products, Among them, the diversion section of the extruder is a semi-unilobal hyperboloid shape, the die of the extruder is a flat rectangular die, the height of the die is 10mm, the width of the die is 1000mm, the ratio of width to height is 100, and the material passes through The temperature of the die is 270°C, the speed is 10m / min, and the cooling speed of the material after passing through the ...

Embodiment 2

[0034] A method for extrusion molding of graphene-modified nylon 66 high-strength composite thin products, specifically comprising the following steps:

[0035] (1) After vacuum drying, 10kg of nylon 66, 500g of graphene and 5g of other additives were added to the twin-screw extruder by metering and feeding, and mixed uniformly and blended in the extruder; then the total The mixed blend is extruded and granulated to obtain graphene-modified nylon 66 blend particles; graphene is graphene with a single-layer or multi-layer structure, its diameter is 0.5-1 μm, its thickness is 5-10 nm, and its specific surface area 500-800m 2 / g; the processing temperature is 265-285°C, and the processing time is 3-5 minutes;

[0036] (2) Add the graphene-modified nylon 66 blended particles obtained in step (1) into a thin product extruder and extrude to obtain a graphene-modified nylon 66 high-strength composite thin product; wherein: the feed of the extruder The temperature of the material se...

Embodiment 3

[0038] A method for extrusion molding of graphene-modified nylon 66 high-strength composite thin products, specifically comprising the following steps:

[0039] (1) After vacuum drying, 10kg of nylon 66, 50g of graphene and 10g of other additives were added to the twin-screw extruder by metering and feeding, and mixed uniformly and blended in the extruder; then the total The mixed blend is extruded and granulated to obtain graphene-modified nylon 66 blend particles; graphene is graphene with a single-layer or multi-layer structure, with a diameter of 0.5-20 μm, a thickness of 0.5-10 nm, and a specific surface area 20-800m 2 / g; the processing temperature is 265-285°C, and the processing time is 0.5-5 minutes.

[0040] (2) Add the graphene-modified nylon 66 blended particles obtained in step (1) into a thin product extruder and extrude to obtain a graphene-modified nylon 66 high-strength composite thin product; wherein: the feed of the extruder The temperature of the material...

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Abstract

The invention relates to the field of high molecular materials, and in particular relates to an extrusion molding method of graphene modified nylon 66 high-strength composite thin products. The extrusion molding method specifically comprises the following steps: (1) adding nylon 66, graphene and other auxiliary agents which are subjected to vacuum drying into a double-screw extruding machine by adopting metering feeding modes respectively, uniformly mixing in the extruding machine, and blending; and then extruding and granulating a blended mixture to obtain graphene modified nylon 66 blending particles; and (2) then adding into a thin product extruding machine, and performing extrusion molding to obtain the graphene modified nylon 66 high-strength composite thin products, wherein a flow guide section of the extruding machine is cone-shaped or half uniparted hyperboloid shaped, a mouth mold of the extruding machine is a flat rectangular mouth mold, the height of the mouth mold is 0.1-50mm, the width of the mouth mold is 100-5000mm, the ratio of the width to the height is 20-1000, the temperature of materials passing through the mouth mold is 265-285 DEG C, the speed is 5-100m / min, and the cooling speed of the materials after passing through the mouth mold is 2-20 DEG C / min. The products prepared by using the method disclosed by the invention are high in crystallization degree, and have high strength than that of ordinary products.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a method for extrusion molding of graphene-modified nylon 66 high-strength composite thin products. Background technique [0002] Nylon 66 has excellent comprehensive properties such as good mechanical properties, good flexibility, wear resistance, oil resistance, and self-lubrication, and is widely used in the fields of automobile industry, electronic and electrical industry, mechanical equipment, construction industry, etc. However, the disadvantages of nylon 66 sheet material such as low mechanical strength limit its application in a wider range. [0003] As a new type of two-dimensional carbon nanomaterial, graphene is only one atom thick in a single layer. Theoretical research shows that graphene has excellent mechanical properties and is the strongest material known in the world. Its ultimate strength reaches 130GPa, Young's modulus is as high as 1TPa, and the theoretical ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C47/00B29C47/92B29C47/14B29C48/305B29C48/92
CPCB29C48/022B29K2077/00C08K3/04C08L77/06
Inventor 王宗宝吕游许浩骏张利安敏芳
Owner XIAN YUANTONG KNIGHT AUTOMOTIVE SAFETY TECH