【Basic Knowledge of Glossary Definitions for “Polymers and Materials”-013】Glossary definitions related to polymers
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This post was last edited by ljtjbx on 2015-8-9 08:12. 1. Unorientation: Under the influence of heat, the oriented macromolecular bonds undergo a spontaneous process of becoming disordered. 2. Plasticizing capacity: refers to the ability of the plasticizing unit in the injection machine to plasticize the material within 1 hour. 3. Solid bed distribution: refers to the ratio of the solid width in the screw groove to the width of the screw groove itself. 4. Thermoplastic plastics: When heated, polymers soften to the point of becoming molten and flowable, and can be shaped into a desired form; upon cooling, they solidify and take their final shape. This process is reversible and can be repeated. 5. Laminating: A manufacturing method in which multiple layers of adhesive-coated sheets are stacked and fed into a hot press, where they are pressed together under specific temperature and pressure conditions to form plastic products.
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Regarding depolarization: Generally, what types of polymers exhibit polarization?
All polymers exhibit orientation and deporientation; these phenomena coexist, with the difference lying only in the degree of orientation. I understand that as long as there is resilience, there is a way to reverse the orientation.
Can it then be understood that stretching is a process of balance between orientation and deporientation?
It can be understood that way. Stretching corresponds to orientation, while rebound corresponds to deporientation.