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Anti-aging polyamide composition and preparing method thereof

A polyamide composition and anti-aging technology, applied in the field of anti-aging polyamide composition and preparation thereof, and anti-aging polyamide composition, can solve the problem of reducing the anti-oxidation effect of polyamide, uniform anti-oxidation effect, low flexibility, etc. problems, to achieve the effect of extending service life, improving stability, and high replacement frequency

Inactive Publication Date: 2019-05-24
CHONGQING LINGCHUANGFU PHOTOELECTRIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are a variety of products prepared from polyamides, and the antioxidants added during the synthesis process cannot meet the application conditions of each specific product
In actual production, the method of adding antioxidants in the synthesis process has low flexibility, and the uniform antioxidant effect of the product cannot be specifically addressed for special environments, and even reduces the antioxidant effect of polyamides.

Method used

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  • Anti-aging polyamide composition and preparing method thereof
  • Anti-aging polyamide composition and preparing method thereof

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preparation example Construction

[0035] Preparation method of polyamide composition:

[0036] S1: take antioxidant, ultraviolet absorber, photostabilizer and dissolve in silicone oil, be configured into silicone oil solution;

[0037] S2: Dry the polyamide particles at 60-80°C for 1-3 hours, pulverize them, pass through a 100-mesh sieve,

[0038] S3: Low-speed stirring: Weigh a certain amount of polyamide and place it in a mixer, control the stirring temperature to 100-110°C, stir at a low speed, the stirring speed is 100-300r / min, stir for 30min, add 50% silicone oil solution at the same time, the dropping speed Control at 5ml / min;

[0039] S4: High-speed stirring: the stirring speed of high-speed stirring is controlled at 500-800r / min, stirring for 60min, and the dropping rate is controlled at 1ml / min;

[0040] S5: Stirring at high temperature: After the high-speed stirring is completed, continue to stir at high temperature, control the stirring speed at 200-600r / min, control the temperature at 190-215°C,...

Embodiment 1

[0043] The mass percentage of polyamide is 99.55%; the antioxidant is pentaerythritol tetrakis (3-lauryl thiopropionate), and the mass percentage is 0.15%; the ultraviolet absorber is 3,5-di-tert-butyl- Hexadecyl 4-hydroxybenzoate, the mass percentage is 0.15%; the light stabilizer is 1,5,8,12-tetrakis[4,6-bis(N-butyl-N-1,2,2, 6,6-pentamethyl-4-piperidinylamino)-1,3,5-triazin-2-yl]-1,5,8,12-tetraazadodecane, mass percent 0.15 %. A polycarbonate composition is constructed from this component and made into a square plate.

Embodiment 2

[0045] The mass percentage of polyamide is 95.8%; the antioxidant is triethylene glycol bis-β-(3-tert-butyl-4-hydroxyl-5-methylphenyl) propionate, and the mass percentage is 1.05% The ultraviolet absorber is (2H-benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol, and the mass percentage composition is 3%; the light stabilizer is Poly(4-hydroxyethyl-2,2,6,6-tetramethyl-1-piperidineethanol) ester, the mass percentage is 0.15%. A polycarbonate composition is constructed from this component and made into a square plate.

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Abstract

The invention discloses an anti-aging polyamide composition. The anti-aging polyamide composition is prepared from, by mass, 91.95%-99.55% of polyamide, 0.15%-1.05% of an antioxidant, 0.15%-3% of an ultraviolet light absorber and 0.15%-3% of a light stabilizer. By means of the anti-aging polyamide composition, the heat resistance and the light resistance of a polyamide material can be remarkably improved, the degradation process and the aging process of the polyamide material can be delayed, and the service life of a polyamide material composition product can be prolonged.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to an anti-aging polyamide composition, an anti-aging polyamide composition and a preparation method thereof. Background technique [0002] Polyamide (PA) products are hard, have a glossy surface, and have excellent mechanical properties, chemical stability, and electrical insulation. At present, polyamide is widely used in mechanical, chemical and electrical fields, and is the engineering plastic with the largest output in the industry. In the production process of polyamide, additives are added to modify it to obtain compounded materials and customized special materials with better overall performance or improved certain properties, so as to overcome the lack of performance of polyamide and expand the application field. Modification mainly includes physical modification and chemical modification. Chemical modification mainly changes the structure of the base resin to change the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08L67/02C08K5/372C08K5/134C08K5/3492C08K5/3475C08K5/20C08K5/3435C08K5/527C08K5/25
Inventor 郭志强
Owner CHONGQING LINGCHUANGFU PHOTOELECTRIC TECH
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