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Polyamide composition and preparation method and application thereof

A polyamide composition and polyamide technology, applied in the field of polyamide composition, can solve problems such as easy color difference, failure to meet requirements, easy moisture absorption, etc., achieve the effect of reducing color change and improving user experience

Pending Publication Date: 2020-09-04
艾曼斯(苏州)工程塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, when used in engineering materials, especially under high humidity application conditions, polyamide engineering plastics are easy to absorb moisture, and under the dual conditions of heating moisture absorption and ultraviolet light, it is more likely to produce color difference
Polyamide materials in the prior art do not meet the requirements in humidity application conditions

Method used

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  • Polyamide composition and preparation method and application thereof
  • Polyamide composition and preparation method and application thereof
  • Polyamide composition and preparation method and application thereof

Examples

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preparation example Construction

[0065] According to one aspect of the present invention, a kind of preparation method of polyamide composition is provided, and this method can be used for preparing the polyamide composition as described in this application, and this method comprises the steps:

[0066] Step 1, preparing raw materials: prepare each raw material according to the aforementioned components and parts by weight;

[0067] Step 2, mixing and extruding: mixing and extruding the prepared raw materials.

[0068] According to one aspect of the present invention, polyamide, and other components such as antioxidant, UV absorber, hindered amine light stabilizer, phosphonite / salt antiaging agent, toner Mix and stir evenly, and then add to the extruder (for example, twin-screw extruder); out, cooled, drawn and pelletized to obtain the polyamide composition of the present invention.

[0069] According to one aspect of the present invention, the extrusion temperature is 260-330 degrees Celsius, for example, ...

Embodiment 1

[0084] The natural color anti-ultraviolet aging polyamide composition of the present embodiment is composed of the following components by weight: 33.4 parts of polyamide PA612, 11.2 parts of polyamide PA6I / 6T, 55 parts of chopped glass fibers, and 0.25 parts of hindered phenols Antioxidant 1010, 0.15 parts of phosphite antioxidant 168, 1.5 parts of UV absorber 2-(2H-benzotriazole-2)-4,6-bis(1-methyl-1-phenyl Ethyl)-phenol, 0.3 parts of hindered amine light stabilizer N,N'-bis(2,2,6,6-tetramethyl-4-piperidinyl)-N,N'-dialdehyde hexamethylenediamine .

[0085] The preparation method of the natural color UV aging resistant polyamide composition of this Example 1 is the same as that of Comparative Example 1.

Embodiment 2

[0087] The natural color anti-ultraviolet aging polyamide composition of the present embodiment is composed of the following components by weight: 33.4 parts of polyamide PA612, 11.2 parts of polyamide PA6I / 6T, 55 parts of chopped glass fibers, and 0.25 parts of hindered phenols Antioxidant 1010, 0.15 parts of phosphite antioxidant 168, 1.5 parts of UV absorber 2-(2H-benzotriazole-2)-4,6-bis(1-methyl-1-phenyl Ethyl)-phenol, 0.3 parts of anti-aging agent sodium phenylphosphinate.

[0088] The preparation method of the natural color UV-resistant polyamide composition of Example 2 is the same as that of Comparative Example 1.

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Abstract

The invention relates to a polyamide composition as well as a preparation method and an application thereof. The invention provides a polyamide composition. The polyamide composition comprises the following components: 30-70 parts of polyamide; 30 to 70 parts of chopped glass fiber; 0.01 to 1 part of an antioxidant; 0.1 to 3 parts of an ultraviolet absorber; 0-3 parts of a hindered amine light stabilizer; 0-3 parts of a phosphite ester / salt anti-aging agent, and 0.1-10 parts of color powder; wherein the polyamide composition comprises at least one or two of the hindered amine light stabilizerand the phosphite ester / salt anti-aging agent. The polyamide composition disclosed by the invention can keep the initial color of the material under the dual effects of heating moisture absorption andultraviolet light, the color change is small, and the use experience of consumers on material appearance parts is improved.

Description

technical field [0001] The invention relates to a polyamide composition, in particular to a polyamide composition resistant to aging and discoloration under humidity and ultraviolet light conditions, as well as its preparation method and application. Background technique [0002] Polyamide is a polymer engineering plastic with multiple repeating units containing amide groups on the main molecular chain. Polyamide has excellent mechanical properties, chemical resistance, heat resistance, and is easy to process. It is widely used in communication products, industrial and consumer products, automotive functional structural parts, and materials for interior and exterior decoration. [0003] The polyamide material in the prior art is easy to turn yellow and black under ultraviolet aging conditions such as sunlight, which greatly affects the user experience of consumers. In addition, polyamide engineering plastics are easy to absorb moisture. Under the dual effects of heating moi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08K13/04C08K7/14C08K5/134C08K5/526C08K5/3475
CPCC08L77/06C08L2205/025C08L2201/08C08L2205/03C08K13/04C08K7/14C08K5/1345C08K5/526C08K5/3475
Inventor 廉学明冯钰璐
Owner 艾曼斯(苏州)工程塑料有限公司
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