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Modified nylon material with high smooth surface level, and preparation method

A modified material and nylon technology, applied in the field of high-gloss surface grade nylon modified materials and their preparation, can solve the problems of high material shrinkage, low material strength, hardness and toughness, and failure to meet the quality requirements of high-gloss surface products. Achieve the effect of smooth surface, reduced processing technology and molding temperature, and easy processing

Inactive Publication Date: 2007-07-25
ANHUI KEJU NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large amount of powder contained, the shrinkage rate of the material is relatively large, and the strength, hardness and toughness of the material are relatively low, which cannot meet the quality requirements of high-gloss surface products in terms of mechanical properties.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1 (by weight percentage, following embodiment is identical)

[0041] PA66-66.55, PA6-3, calcium silicate 1250 mesh 20, antioxidant 0.25, slip agent 0.2 were pre-stirred in a mixing tank for 6 minutes, and then extruded by twin-screw to granulate, while adding long glass fiber 10. The processing technology is 240-250℃ in the first zone, 245-250℃ in the second zone, 250-260℃ in the third zone, 250-260℃ in the fourth zone, 250-260℃ in the fifth zone, 235-250℃ in the sixth zone, and 230-230- 245°C.

Embodiment 2

[0043] PA66-61.55, PA6-8, calcium silicate 1250 mesh 20, antioxidant 0.25, slip agent 0.2 were pre-stirred in a mixing tank for 6 minutes, and then extruded by twin-screw to granulate, while adding long glass fiber 10. The processing technology is 240-250℃ in the first zone, 245-250℃ in the second zone, 250-260℃ in the third zone, 250-260℃ in the fourth zone, 250-260℃ in the fifth zone, 235-250℃ in the sixth zone, and 230-230 in the seventh zone. 245°C.

Embodiment 3

[0045] PA66-66.55, PA6-3, calcium silicate 1250 mesh 25, antioxidant 0.25, slip agent 0.2 were pre-stirred in a mixing tank for 6 minutes, and then extruded by twin-screw to granulate, while adding long glass fiber 5. The processing technology is 240-250℃ in the first zone, 245-250℃ in the second zone, 250-260℃ in the third zone, 250-260℃ in the fourth zone, 250-260℃ in the fifth zone, 235-250℃ in the sixth zone, and 230-230 in the seventh zone. 245°C.

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Abstract

This invention discloses a modified nylon material with high surface smoothness and luster. The modified nylon material is composed of: PA66 resin 61-67 wt.%, PA6 resin 3-8 wt.%, long glass fibers 5-10 wt.%, calcium silicate 20-25 wt.%, antioxidant 0.2-0.4 wt.%, and lubricant 0.1-0.3 wt.%. Compared with solely PA66-filled modified nylon materials, the modified nylon material in this invention has such advantages as high surface smoothness and luster, good mechanical performance, and can be used in production of plastic shells such as electric appliance shell, motor shell, and automobile wheel shell.

Description

[technical field] [0001] The invention relates to a high-gloss surface grade nylon modified material and a preparation method thereof. [Background technique] [0002] Nylon 66 (PA66, polyhexamethylene adipamide) plastic has the following characteristics: high melting point, excellent heat resistance and self-extinguishing properties; excellent balance of toughness, durability, electrical properties and other physical properties; excellent Excellent oil resistance, chemical resistance; excellent wear resistance, creep resistance and aging resistance. Therefore, nylon 66 engineering plastics are widely used in the electromechanical industry. [0003] The casings of plastic products in the electromechanical industry, such as electric tool casings, motor casings, automobile wheel rim covers, etc., need to have a high finish to meet the requirements of consumers, and are also easy to carry out subsequent processes such as painting and dyeing. These products can generally be modi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08K7/14B29C47/40B29C47/92B29B9/12C08L77/02C08K3/34C08K5/524B29C48/92B29C48/95
CPCB29C47/92B29C48/95
Inventor 徐东贺永王贤文
Owner ANHUI KEJU NEW MATERIALS
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