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High-temperature resistant yellowing nylon material and preparation method thereof

A technology of high temperature resistance and nylon, applied in the field of high temperature resistant yellowing nylon material and its preparation, to achieve the effect of expanding the application range, inhibiting yellowing and increasing stability

Inactive Publication Date: 2018-07-17
ZHEJIANG PRET NEW MATERIALS +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a high-temperature-resistant yellowing nylon material and its preparation method, which realizes its wide application in automobiles, and solves the problem of the nylon material through the compounding of an anti-oxidation aging system, a nylon yellowing additive, and a toner system. The problem of yellowing increases the stability of nylon materials in high temperature environments and expands the application range of nylon materials

Method used

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  • High-temperature resistant yellowing nylon material and preparation method thereof
  • High-temperature resistant yellowing nylon material and preparation method thereof
  • High-temperature resistant yellowing nylon material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Weigh 3.968kg of PA66-FYR27D and dry it at 100°C for 4 hours for use.

[0038] Weigh 12g of antioxidant H3386; 8g of lubricant CaST; 12g of silane coupling agent A1100 and mix well in a high-speed mixer to obtain a mixture of additives;

[0039] The dried nylon resin and additives are mixed uniformly through a high-speed mixer, and then added to the twin-screw extruder (screw diameter 35mm, L / D=44) through the main feed port, twin-screw extruder The control temperature of each section of the machine (from the feeding port to the machine head exit) is 230℃, 240℃, 265℃, 265℃, 265℃, 265℃, 265℃, 265℃, 265℃, 265℃, 265℃, The speed of the twin-screw extruder is 380r / min, and the extruded material is cooled in a water tank, dried by a blast desiccant, and then pelletized to obtain the product.

[0040] The above-mentioned materials were dried in a blast drying oven at 110°C for 4 hours and then injection molded into standard color swatch samples at a temperature of 275°C. Place the ...

Embodiment 2

[0042] Weigh 3.968kg of PA66-FYR27D and dry it at 100°C for 4 hours for use.

[0043] Weigh 12g of antioxidant H10; 8g of lubricant CaST; 12g of silane coupling agent A1100 and mix well in a high-speed mixer to obtain a mixture of additives;

[0044] The dried nylon resin and additives are mixed uniformly through a high-speed mixer, and then added to the twin-screw extruder (screw diameter 35mm, L / D=44) through the main feed port, twin-screw extruder The control temperature of each section of the machine (from the feeding port to the machine head exit) is 230℃, 240℃, 265℃, 265℃, 265℃, 265℃, 265℃, 265℃, 265℃, 265℃, 265℃, The speed of the twin-screw extruder is 380r / min, and the extruded material is cooled in a water tank, dried by a blast desiccant, and then pelletized to obtain the product.

[0045] The above-mentioned materials were dried in a blast drying oven at 110°C for 4 hours and then injection molded into standard color swatch samples at a temperature of 275°C. Place the in...

Embodiment 3

[0047] Weigh 3.92kg of PA66-FYR27D and dry it at 100°C for 4 hours for use.

[0048] Weigh 10g of antioxidant H1098; weigh 10g of antioxidant 168, 40g of titanium dioxide R-2219, and 8g of lubricant CaST; and 12g of silane coupling agent A1100 in a high-speed mixer and mix evenly to obtain a mixture of additives;

[0049] The dried nylon resin and additives are mixed uniformly through a high-speed mixer, and then added to the twin-screw extruder (screw diameter 35mm, L / D=44) through the main feed port, twin-screw extruder The control temperature of each section of the machine (from the feeding port to the machine head exit) is 230℃, 240℃, 265℃, 265℃, 265℃, 265℃, 265℃, 265℃, 265℃, 265℃, 265℃, The speed of the twin-screw extruder is 380r / min, and the extruded material is cooled in a water tank, dried by a blast desiccant, and then pelletized to obtain the product.

[0050] The above-mentioned materials were dried in a blast drying oven at 110°C for 4 hours and then injection molded in...

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Abstract

The invention discloses a high-temperature resistant yellowing nylon material and a preparation method of the high-temperature resistant yellowing nylon material. The high-temperature resistant yellowing nylon material comprises the following raw materials calculated in percentage by weight: 91.5 to 99.2% of nylon, 0.1 to 0.5% of an antioxidant A, 0.1 to 0.5% of an antioxidant B, 0.1 to 5% of TiO2, 0.1 to 0.5% of a silane coupling agent, 0.1 to 2% of Na6A14Si6S4020 and 0.1 to 0.5% of a lubricant. Compared with the prior art, the high-temperature resistant yellowing nylon material disclosed bythe invention has the advantages of inhibiting the thermal oxidative aging behavior and yellowing phenomenon of the nylon material through selecting organic copper salt and an anti-yellowing additiveto be in a compound use on the one hand, being capable of slowing down or inhibiting yellowing to some extent by reasonably selecting an aging system, and further having an eliminating effect and a covering effect on yellow color light through a toner system for solving inevitable yellowing under some particularly harsh conditions to ensure that the nylon material still remains whiteness under relatively harsh conditions, thereby ensuring that the nylon material meets strict requirements for whiteness at high temperature.

Description

Technical field [0001] The invention relates to improving the yellowing problem of nylon materials under high temperature conditions, improving the yellowing resistance performance of nylon materials under high temperature conditions, and realizing the use of some white and light-colored nylon materials in LED lamp brackets, heat-resistant electrical enclosures, etc. Application of parts with higher temperature. Background technique [0002] With the rapid development of the automobile industry, safety, environmental protection, and energy saving have become the main directions of automobile research in recent years, and automobile lightweight has become the development trend of automobiles. It is of great significance to replace steel with plastic to realize automobile lightweight. Compared with general plastics, engineering plastics have excellent mechanical properties, abrasion resistance, chemical resistance, heat resistance, dimensional stability, etc., and engineering plast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L77/02C08K5/00C08K5/098C08K3/32C08K5/20C08K5/526C08K3/22C08K13/02
CPCC08K5/005C08K3/22C08K3/32C08K5/098C08K5/20C08K5/526C08K13/02C08K2003/2241C08L2201/08C08L77/06C08L77/02
Inventor 张海生蔡青郑杭景田兰周文
Owner ZHEJIANG PRET NEW MATERIALS
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