聚乳酸塑料比热容的差示扫描量热法测试研究

天津科技 ›› 2025, Vol. 52 ›› Issue (11): 20-23.

聚乳酸塑料比热容的差示扫描量热法测试研究

张仲荣¹, 赵一权¹, 谢宇¹, 张盼盼¹, 刘伟²

1.中汽零部件技术（天津）有限公司天津 300300;
2.中国汽车战略与政策研究中心天津 300300

收稿日期:2025-10-09 发布日期:2026-01-05

Study on specific heat capacity of polylactic acid plastics by differential scanning calorimetry

ZHANG Zhongrong¹, ZHAO Yiquan¹, XIE Yu¹, ZHANG Panpan¹, LIU Wei²

1. China Automotive Parts Technology <Tianjin>Co.,Ltd.,Tianjin 300300,China;
2. China Automotive Strategy and Policy Research Center,Tianjin 300300,China

Received:2025-10-09 Published:2026-01-05

摘要/Abstract

摘要： 比热容是研究和开发新型聚合物材料的一个重要参数,不同类型的聚合物具有不同的比热容。采用差示扫描量热法（DSC）对影响聚乳酸（PLA）比热容测试结果的因素进行研究,考察样品称样量、仪器升温速率、热历史等因素对比热容的影响,获得准确测试PLA比热容的条件。为得到准确、可靠的结果,提出一些提高测试比热容准确度的建议。

关键词: 聚乳酸, 比热容, 差示扫描量热法

Abstract: Specific heat capacity is a crucial parameter in the research and development of new polymer materials,and different types of polymers have different specific heat capacities. Differential Scanning Calorimetry （DSC） was used to study the factors influencing the test results of the specific heat capacity of polylactic acid （PLA）. Factors such as sample weight,instrument heating rate,and thermal history were investigated for their effects on specific heat capacity to obtain the conditions for accurate testing of PLA’s specific heat capacity. To achieve accurate and reliable results,several suggestions are put forward to improve the accuracy of specific heat capacity testing.

Key words: polylactic acid, specific heat capacity, differential scanning calorimetry

中图分类号:

TB324

张仲荣, 赵一权, 谢宇, 张盼盼, 刘伟. 聚乳酸塑料比热容的差示扫描量热法测试研究[J]. 天津科技, 2025, 52(11): 20-23.

ZHANG Zhongrong, ZHAO Yiquan, XIE Yu, ZHANG Panpan, LIU Wei. Study on specific heat capacity of polylactic acid plastics by differential scanning calorimetry[J]. TIANJIN SCIENCE & TECHNOLOGY, 2025, 52(11): 20-23.