Environment-friendly low-smell and spraying-free polyamide composition and preparation method thereof

A polyamide composition and a low-odor technology are applied in the field of environment-friendly, low-odor, spray-free polyamide compositions and their preparation, which can solve the problems of restricting and deteriorating the odor of nylon materials, reducing gas, reducing appearance defects, and improving surface effect of brightness

Active Publication Date: 2018-03-13
SHANGHAI KINGFA SCI & TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These effect pigments are distributed in the product, further exacerbating the odor problem of nylon materials, especially when used in automotive interior parts, such as sub-dashboards, shift paddles, adjustment buttons, shifter handles, decorative parts and other parts, the odor Problems restrict the further promotion of spray-free nylon products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Prepare raw materials according to the following components and parts by weight thereof:

[0052] PA66 99kg;

[0053] MI 1kg;

[0054] Effect pigment I 2kg;

[0055] The particles obtained by granulating through the above-mentioned extrusion process are further passed through the odor removal process of the present invention,

[0056] The odor removal process includes the following steps:

[0057] (1) Put the polyamide composition in a vacuum tank, and use nitrogen gas to replace the air inside the tank, repeat the operation 3 times, and remove the oxygen in the air;

[0058] (2) Seal and draw a vacuum so that the internal pressure of the tank is less than or equal to 133 Pascals;

[0059] (3) The polyamide composition inside was heated by the heating coil in the interlayer of the tank body, and the temperature thereof reached a temperature of 60° C., and treated by a constant temperature method for 120 minutes.

Embodiment 2

[0061] Prepare raw materials according to the following components and parts by weight thereof:

[0062] PA66 99kg;

[0063] M I aq.1 11kg;

[0064] Effect pigment II 3kg;

[0065] The particles obtained by granulating through the above-mentioned extrusion process are further passed through the odor removal process of the present invention,

[0066] The odor removal process includes placing the polyamide composition in a vacuum tank and performing the following steps:

[0067] (1) Use nitrogen gas to replace the air inside the tank, repeat the operation 3 times, and remove the oxygen in the air;

[0068] (2) Seal and draw a vacuum so that the internal pressure of the tank is less than or equal to 133 Pascals;

[0069] (3) The polyamide composition inside was heated by the heating coil in the interlayer of the tank body, and the temperature thereof reached 180° C., and treated by a constant temperature method for 30 minutes.

Embodiment 3

[0071] Prepare raw materials according to the following components and parts by weight thereof:

[0072] PA66 99kg;

[0073] M I aq.2 2kg;

[0074] Effect pigment III: 1kg;

[0075] The particles obtained by granulating through the above-mentioned extrusion process are further passed through the odor removal process of the present invention,

[0076] The odor removal process includes placing the polyamide composition in a vacuum tank and performing the following steps:

[0077] (1) Use nitrogen gas to replace the air inside the tank, repeat the operation 3 times, and remove the oxygen in the air;

[0078] (2) Seal and draw a vacuum so that the internal pressure of the tank is less than or equal to 133 Pascals;

[0079] (3) The polyamide composition inside was heated by the heating coil in the interlayer of the tank body, so that the temperature reached a temperature of 120° C., and treated by a constant temperature method for 45 minutes.

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Abstract

The invention discloses an environment-friendly low-smell and spraying-free polyamide composition. The environment-friendly low-smell and spraying-free polyamide composition comprises the following components in parts by weight: 95-100 parts of polyamide, 0.01-5 parts of metal compound, and 0.1-6 parts of effect pigment. According to the environment-friendly low-smell and spraying-free polyamide composition, smell produced in the production process and/or formation process of nylon materials can be extremely reduced; the appearance defects, caused by smell, on spraying-free products, in particular the products emphasizing on appearance and surface aesthetic effects, can be extremely reduced. According to the abovementioned technical scheme, the metal compound is introduced, and the post-processing technology is carried out, so that the surface brightness of the spraying-free polyamide composition is greatly improved.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to an environmentally friendly, low-odor, spray-free polyamide composition and a preparation method thereof Background technique [0002] The coating of plastic surfaces is very decorative, but at the same time it inevitably causes chemical pollution and increases the cost of the system. As a result, there is a need for the development of spray-free plastics. Competitive spray-free plastics need to have the following characteristics: ① low system cost, can be injection molded; ② easy to process and shape, uniform surface effect; ③ excellent appearance effects, such as gloss, metallic effect, piano black, etc.; ④ durable Scratches, abrasions, stains, fingerprints, etc.; ⑤ resistance to chemical agents such as detergents; ⑥ weather resistance; ⑦ can replace metal parts, etc. [0003] As the regulations issued by the national government have increasingly stringent environmental prote...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08K3/16C08K9/10C08K7/06C08K3/08C08K7/00C08L77/02C08K7/14C08K3/22
CPCC08K3/08C08K3/16C08K3/22C08K7/00C08K7/06C08K7/14C08K9/10C08K2003/0812C08K2003/085C08K2003/162C08K2003/2248C08L77/06C08L77/02
Inventor 林洁龙王大中杨波苏娟霞黄河生林浩庆
Owner SHANGHAI KINGFA SCI & TECH
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