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INSTRUMENTED IMPACT TESTING OF CASTOR-OIL-BASED POLYURETHANES

机译:蓖麻油基聚氨酯的仪器冲击试验

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Instrumented impact testing has been used to study castor-oil-based polyurethanes. The energy-absorbed capacity of these materials in impact is dependent on several factors, such as the type of isocyanate, NCO/OH ratio, and testing temperature. An approximate but simple method for the low-temperature impact testing was proposed. A change from ductile response to brittle fracture was observed as the temperature of the specimen was reduced. This characteristic ductile-brittle transition temperature is to be found highly sensitive to crosslinking degree. (C) 1995 John Wiley & Sons, Inc. [References: 11]
机译:仪器冲击试验已用于研究蓖麻油基聚氨酯。这些材料在冲击中的能量吸收能力取决于几个因素,例如异氰酸酯的类型,NCO / OH比和测试温度。提出了一种近似但简单的低温冲击试验方法。随着样品温度的降低,观察到了从延性响应到脆性断裂的变化。发现该特征的韧性-脆性转变温度对交联度高度敏感。 (C)1995 John Wiley&Sons,Inc. [参考:11]

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