Biomass based polyamide resin

Abstract

The invention discloses a biomass-based semi-aromatic polyamide copolymer having the advantages of excellent thermal property and low water absorption rate. The biomass-based polyamide resin contains a furan diacid unit (a), a terephthalic acid unit (b), a biomass-based 1,10-decamethylene diamine unit (c), and an aliphatic diamine unit (c) with the carbon number of above 4 except the unit (c), wherein the content of the unit (a) is 50-98mol% of the total amount of the unit (a) and the unit (b), and the content of the unit (d) is 0-30mol% of the total amount of the unit (c) and the unit (d). The copolymer has excellent physical and mechanical performance, can be used in engineering plastics, and also can be used in other industrial materials and materials for manufacturing electrical and electronic devices.

Description

technical field [0001] The invention relates to a polyamide resin, in particular to a biomass-based semi-aromatic polyamide with excellent thermodynamic properties. Background technique [0002] So-called fossil raw materials such as petroleum have been used as raw materials for polyamide resins. However, in order to prevent global warming by suppressing carbon dioxide emissions and to build a recycling society, it is desired to replace the raw materials of polyamide resins with biomass-derived raw materials. [0003] Nylon-11 and nylon-12 are known as polyamide resins produced using biomass-derived raw materials. They have good properties, such as chemical corrosion resistance, good flexibility, and dimensional stability, etc., but their relatively obvious defects are poor thermodynamic properties (see patent document: CN1214349). [0004] Compared with nylon-6 or nylon-66, nylon-56 produced from biomass raw materials has roughly the same heat resistance and mechanical and...

AI Technical Summary

Problems solved by technology

They have good properties, such as chemical corrosion resistance, good flexibility, and dimensional stability, etc., but their more obvious defects are poor thermodynamic properties (see patent literature: CN1214349)

[0004] Compared with nylon-6 or nylon-66, nylon-56 produced from biomass raw materials has roughly the same heat resistance and mechanical and physical properties, but its obvious defect is that high moisture absorption leads to poor dimensional stability

Its thermal stability is poor, and resins with poor thermal stability are not suitable for large molded products with long molding cycles such as resin intake manifolds for automotive parts (see patent reference: CN101442382A)

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