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A kind of semi-aromatic polyamide resin and molding composition thereof

A technology of polyamide resin and molding composition, which is applied in the field of polymer materials and can solve the problem of consuming large energy by-products

Active Publication Date: 2019-03-29
KINGFA SCI & TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Petroleum is non-renewable, and these raw materials need to undergo complex chemical processes, consume a lot of energy and produce many by-products that cause environmental pollution

Method used

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  • A kind of semi-aromatic polyamide resin and molding composition thereof
  • A kind of semi-aromatic polyamide resin and molding composition thereof
  • A kind of semi-aromatic polyamide resin and molding composition thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～10 and comparative example 1～5

[0112] In the autoclave equipped with magnetic coupling stirring, condenser, gas phase port, feeding port, pressure explosion-proof port, add the reaction raw materials according to the ratio of Table 1, then add benzoic acid, sodium hypophosphite and deionized water, the amount of benzoic acid It is 2.5% of the total amount of diamine, diacid, lactam and amino acid, the weight of sodium hypophosphite is 0.1% of the weight of other feeding materials except deionized water, and the weight of deionized water is 30% of the total weight of feeding; Inject high-purity argon as a protective gas to start the reaction. The temperature of the reaction mixture was raised to 220°C-230°C and stirred for 3-5 hours, then the valve was opened to slowly release the pressure and drain water while keeping the temperature and pressure constant. Drain until the drainage volume reaches 70% of the input deionized water volume. At this time, the temperature began to rise, and the temperature was ra...

Embodiment 11～16 and comparative example 6-9

[0119] Examples 11-16 and Comparative Examples 6-9: Preparation of semi-aromatic polyamide molding compositions

[0120] Mix the semi-aromatic polyamide resin and additives uniformly in the high-mixer according to the formula in Table 2, and then add them into the twin-screw extruder through the main feeding port, and feed the reinforcing filler through the side feeding scale, extrude, and pass The semi-aromatic polyamide molding composition is obtained after water cooling, granulation and drying.

[0121] Table 2 The formulation and performance test results of the semi-aromatic polyamide molding composition (the formulations in the following table are all parts by weight)

[0122]

[0123] It can be seen from the results in Table 2 that under the same formulation of the molding composition, the Ganz whiteness of the molding composition containing the semi-aromatic polyamide resin of the present invention also has obvious advantages.

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Abstract

The invention discloses a semi-aromatic polyamide resin. The semi-aromatic polyamide resin is composed of derivatives of the following repeating units: (i) diacid units, (Iii) diamine units and (iii)one or more optional amino carboxylic acids and / or lactams, wherein terephthalic acid units account for 50 to 100 mol% of the component (i) based on the total molar weight of the component (i); aliphatic diamines with 11 to 20 carbon atoms account for 50 to 100 mol% of the component (ii) based on the total molar weight of the component (ii); the component (iii) accounts for 0 to 25 mol% of the total molar weight of the component (i) and the component (ii); and the content of bio-based carbon in the semi-aromatic polyamide resin is 56 to 100 mol%. According to the invention, the semi-aromatic polyamide resin prepared by using long-carbon-chain diamines and controlling the content of bio-based carbon is reduced in environmental influence and has Ganz whiteness value of 50 or more and a goodcolor level; and the molding composition composed of the semi-aromatic polyamide resin has obvious advantages in the aspect of color performance.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a semi-aromatic polyamide resin and its molding composition. Background technique [0002] Polyamide is widely used for its good comprehensive properties, including mechanical properties, heat resistance, wear resistance, chemical resistance and self-lubricating properties, low coefficient of friction, and certain flame retardancy. Glass fiber and other fillers are filled to enhance and modify, improve performance and expand application range, etc. 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 these raw materials need to undergo complex chemical processes, consume a lot of energy and produce many by-products that cause environ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G69/36C08G69/26C08L77/06C08L77/00C08L23/20C08K7/14C08K5/5313C08K3/34C08J5/04
CPCC08G69/26C08G69/265C08G69/36C08J5/043C08J2377/00C08J2377/06C08J2423/20C08K7/14C08L77/00C08L77/06C08L23/20C08K3/34C08K5/5313
Inventor 张传辉曹民黄险波叶南飚史振国王道波卢伟光阎昆常欢黄野
Owner KINGFA SCI & TECH CO LTD
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