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Polyamide resin and application thereof as well as polyamide composition consisting of same

A technology of polyamide composition and polyamide resin, which is applied in the field of polyamide composition and can solve the problems of affecting the health of users and consuming large energy

Active Publication Date: 2013-05-08
KINGFA SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Petroleum is non-renewable, and the refining of these raw materials requires complex chemical processes, which consume a lot of energy and produce many by-products that cause environmental pollution. This polyamide contains some gas volatiles, which will gradually emit during use. , affecting user health

Method used

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  • Polyamide resin and application thereof as well as polyamide composition consisting of same
  • Polyamide resin and application thereof as well as polyamide composition consisting of same
  • Polyamide resin and application thereof as well as polyamide composition consisting of same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1~16 and comparative example 1~10

[0092] In the autoclave equipped with magnetic coupling stirring, condenser, gas phase port, feeding port, and pressure explosion-proof port, add the reaction raw materials according to the ratio in the table. Then add benzoic acid, sodium hypophosphite and deionized water. The amount of benzoic acid substance is 2.5% of the amount of diamine, nylon salt, lactam and amino acid total substance, sodium hypophosphite weight is 0.1% of other feeding weight except deionized water, and deionized water weight is 30% of total feeding weight %. Vacuumize and fill high-purity nitrogen as a protective gas, heat up to 220°C within 2 hours with stirring, stir the reaction mixture at 220°C for 1 hour, then raise the temperature of the reactant to 230°C with stirring. The reaction was continued at a constant temperature of 230°C and a constant pressure of 2.2MPa for 2 hours, and the pressure was kept constant by removing the formed water. After the reaction was completed, the material was d...

Embodiment 17~22

[0105] Embodiment 17~22 and comparative example 11~12

[0106] Mix the polyamide resin, flame retardant and other additives uniformly in the high mixer according to the formula in Table 6~7, then feed them into the twin-screw extruder through the main feeding port, and the reinforcing filler passes through the side feeding scale side feeding, extrusion, water cooling, granulation and drying to obtain the polyamide composition. Wherein, extrusion temperature is 330 ℃.

[0107] Formulations in the following table of table 6 are parts by weight

[0108]

[0109]

[0110] Among them, ⊙ means no foaming; Indicates foaming.

[0111] Table 7

[0112]

[0113]

[0114] Among them, ⊙ means no foaming; Indicates foaming.

[0115] It can be seen from Table 6 and Table 7 that the polyamide composition prepared from the polyamide resin prepared in the examples of the present application has a lower gas volatile content and better reflow soldering surface performance, wh...

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Abstract

The invention discloses polyamide resin and application thereof as well as a polyamide composition consisting of the same. A repetitive unit of the polyamide resin is composed of the following components: dicarboxylic acid unit accounting for 80-100% of polyamide resin by mol, aliphatic diamine unit accounting for 80-100% of polyamide resin by mol and having 2-14 carbon atoms and lactam or aminocarboxylic acid unit accounting for 0-20% of polyamide resin by mol and having 6-14 carbon atoms; in the polyamide resin, the content of bio-based carbon is over 45%; and the mol content of the bio-based carbon is calculated by the following formula: content of bio-based carbon=(molar weight of bio-based carbon / total molar weight of organic carbon)*100%. The polyamide resin disclosed by the invention has low gas volatile substance, and thus the polyamide composition prepared from the same also has low gas volatile substance and can be applied to the field of food contact. The prepared polyamide composition has good surface state after reflow soldering.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a polyamide resin, its application and a polyamide composition composed of it. Background technique [0002] Polyamide is widely used because of its good comprehensive properties, including mechanical properties, heat resistance, wear resistance, chemical resistance and self-lubrication, low coefficient of friction, certain flame retardancy, and easy processing. It is suitable for filling and modifying with glass fiber and other fillers to improve performance and expand application range. In recent years, semi-aromatic polyamides have been focused on development due to their better heat resistance and mechanical properties. [0003] However, the existing polyamide resins mainly use raw materials from petroleum cracking products in the synthesis process. Petroleum is non-renewable, and the refining of these raw materials requires complex chemical processes, which consume a lot o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/36C08L77/00
CPCC08G69/36C08L77/00C08G69/265C08L77/06C08L2201/02C08L2201/08
Inventor 张传辉蔡彤旻曾祥斌曹民夏世勇叶南飚陈大华袁绍彦
Owner KINGFA SCI & TECH CO LTD
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