Results indicate that crystallization of nylon 1212 become easy and crystalline velocity and degree increase, and the heat enthalpy decreases after the addition of the toughening agent.

结果表明，增韧剂的加入使尼龙1212更容易结晶，结晶速度增大，结晶温度提高，熔融热焓降低；

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Polyurethane adhesive is made of 1, 4-bdo, MDI and polycaprolactone glycol which is high crystallinity, very high crystallization velocity and large cohesive strength.

以聚己内酯、1,4 -丁二醇和MDI等原料合成的鞋用聚氨酯胶粘剂，具有结晶度高、结晶速度快、内聚强度大等特点。

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The spinnability and drawability of PMMA/PET blends were studied. The orientation and crystallization structure were measured by sonic velocity method and X-ray diffraction respectively.

研究了PMMA/PET共混纤维的可纺性和拉伸性，并测定了拉伸丝的力学性能、取向和结晶结构。

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