Crystalline resins have a very sharp melting point and require significant energy (heat) input before they undergo a phase change and melt to a low viscosity.

结晶型树脂有很尖锐的熔点，要求大量的热能才能进行相转变并熔融到一种低粘状态。

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For these low melting point polyesters with different content of modifier r, the influence of temperature on viscosity of melt must be paid attention during post processing.

对于改性剂r含量不同的低熔点聚酯，在后加工时应充分考虑到温度对熔体粘度的影响。

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They have characteristic of low melting point, low vapor pressure, adjustable acidity, strong solubility and high viscosity.

它具有熔点低、 蒸气压小、酸性可调及良好的溶解度、 粘度和密度等特点。

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