Characteristics of polyamide PA12:
The reason why polyamide PA12 has been developed so rapidly is inseparable from its unique structure: it contains a large amount of polar amide groups in the molecular backbone of polyamide PA12, which makes the polyamide molecules have strong interaction. And can form hydrogen bonds (generally, the higher the density of hydrogen bonds, the better the mechanical strength, the more carbon atoms, the worse the strength), and also make the molecular arrangement of polyamide PA12 neat and crystalline; polyamide PA12 molecular backbone The segment also contains a methylene group, which gives the polyamide a certain flexibility, which can affect the melting point and glass transition temperature (Tg) of the polyamide PA12;
In addition, the polyamide macromolecular main chain end contains an amino group and a carboxyl group, and has a certain reactivity under a certain strip, and is easily modified. These polyamide PA12s containing an amide group (-CONH-) structure have a series of excellent properties compared to other materials.
Polyamide PA12 resin is a kind of material with excellent comprehensive performance, but it also has obvious shortcomings, such as physical property sensitivity to temperature, large water absorption, dimensional stability, poor low temperature toughness, and the like. Modification by chemical or physical methods can greatly improve its performance. For example, by adding a glass fiber material, the water absorption and dimensional stability can be greatly improved, and the strength and toughness of the resin can be improved; by blending copolymerization with other polymers, various alloys can be produced, instead of metal, Traditional materials such as wood.
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Mike Lee
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