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Modified nylon material with high weld line strength and preparation method thereof

A technology for modifying nylon and strength, which is applied in the field of modified nylon materials with high weld line strength and its preparation, to achieve the effect of improving the strength of weld lines and improving the dispersion

Inactive Publication Date: 2011-08-17
JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, this kind of patent to enhance the weld line strength of nylon material from the perspective of formula optimization has not been reported in China.

Method used

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  • Modified nylon material with high weld line strength and preparation method thereof
  • Modified nylon material with high weld line strength and preparation method thereof
  • Modified nylon material with high weld line strength and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Add 64 parts by weight of nylon 6 (viscosity 2.4), 0.3 parts by weight of copper salt composite antioxidant, 0.3 parts by weight of oxidized polyethylene wax and 0.4 parts by weight of talcum powder into the high mixer, mix evenly at room temperature, and then pass through the twin-screw The main feed port of the extruder is passed into the extruder, and 35 parts by weight of glass fibers (10 μm) treated with an aminosilane coupling agent are passed into the extruder through the side feed port of the twin-screw extruder ; Use a twin-screw extruder to carry out extrusion granulation. The processing conditions for extrusion granulation are: the temperature of the first zone is 220°C, the temperature of the second zone is 230°C, the temperature of the third zone is 240°C, the temperature of the fourth zone is 240°C, and the temperature of the fifth zone is 250°C. ℃, the temperature in the sixth zone is 250 ℃, the temperature in the seventh zone is 245 ℃, the temperature in ...

Embodiment 2

[0030] Add 64 parts by weight of nylon 6 (viscosity 2.4), 0.3 parts by weight of copper salt composite antioxidant, 0.3 parts by weight of oxidized polyethylene wax and 0.4 parts by weight of talcum powder into the high mixer, mix evenly at room temperature, and then pass through the twin-screw The main feed port of the extruder is passed into the extruder, and 35 parts by weight of glass fibers (13 μm) treated with an aminosilane coupling agent are passed into the extruder through the side feed port of the twin-screw extruder ; Use a twin-screw extruder to carry out extrusion granulation. The processing conditions for extrusion granulation are: the temperature of the first zone is 220°C, the temperature of the second zone is 230°C, the temperature of the third zone is 240°C, the temperature of the fourth zone is 240°C, and the temperature of the fifth zone is 250°C. ℃, the temperature in the sixth zone is 250 ℃, the temperature in the seventh zone is 245 ℃, the temperature in ...

Embodiment 3

[0032]Add 64 parts by weight of nylon 6 (viscosity 2.7), 0.3 parts by weight of copper salt composite antioxidant, 0.3 parts by weight of oxidized polyethylene wax and 0.4 parts by weight of talcum powder into the high mixer, mix evenly at room temperature, and then pass through the twin-screw The main feed port of the extruder is passed into the extruder, and 35 parts by weight of glass fibers (10 μm) treated with an aminosilane coupling agent are passed into the extruder through the side feed port of the twin-screw extruder ; Use a twin-screw extruder to carry out extrusion granulation. The processing conditions for extrusion granulation are: the temperature of the first zone is 220°C, the temperature of the second zone is 230°C, the temperature of the third zone is 240°C, the temperature of the fourth zone is 240°C, and the temperature of the fifth zone is 250°C. ℃, the temperature in the sixth zone is 250 ℃, the temperature in the seventh zone is 245 ℃, the temperature in t...

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Abstract

The invention relates to a modified nylon material with high weld line strength and a preparation method thereof. The modified nylon material with high weld line strength comprises the following components in percentage by weight: 38.2-94.7% of nylon resin, 5-60% of inorganic filler, 0.1-0.6% of antioxidant, 0.1-0.6% of lubricant and 0.1-0.6% of talcum powder with the particle diameter being smaller than 1 micron, wherein the inorganic filler is chopped alkali-free glass fiber or kaolin processed by using a silane coupling agent. In the invention, the specially appointed inorganic filler processed by using the specially appointed coupling agent is added to the processing formula of the nylon material, thus the dispersity of the inorganic filler in the nylon resin and the interfacial binding force of the inorganic filler with the nylon resin can be effectively modified, and the weld line strength of the nylon material is enhanced. Furthermore, the inorganic filler is fed into an extruder for extrusion processing from a side feed inlet in the form of lateral feeding during the preparation of the nylon material, thus the structure of the inorganic filler can be prevented from being damaged due to long-time mixing, and the further guarantee is provided for the excellent service performance of the nylon material.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a modified nylon material with high weld line strength and a preparation method thereof. Background technique [0002] Nylon material has high mechanical strength, heat resistance, self-lubrication, excellent barrier performance and chemical corrosion resistance, and excellent comprehensive performance. At present, nylon materials have been widely used in the fields of automobile industry, machinery manufacturing industry, electronic appliances and transportation, etc., and its consumption ranks first among the five major engineering plastics. Nylon materials generally include PA6 (nylon 6), PA66 (nylon 66), PA1010, PA11, PA12, PA46, PA6T, PA9T and PA10T. The most used nylon materials in the automotive industry are PA6 and PA66. Due to the conventional injection molding method to form products, it is inevitable to leave weld marks on the products. Althoug...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08L77/06C08K13/06C08K7/14C08K3/34C08K5/134C08K3/24B29C47/92B29C48/92
CPCB29C48/92B29C2948/92561B29C2948/92704B29C2948/92895
Inventor 冯德才丁超丁正亚梁惠强
Owner JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD
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