计算包覆成型过程中半结晶聚合物的粘合强度

IF 5 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Polymer Testing Pub Date : 2024-09-16 DOI:10.1016/j.polymertesting.2024.108579

Anna Héri-Szuchács , József Gábor Kovács

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引用次数: 0

摘要

注塑成型广泛应用于塑料制造业。然而，有必要更好地了解和计算注塑成型部件与镶件之间的粘接强度，尤其是半结晶聚合物的粘接强度。半结晶聚合物的可焊性不同于无定形聚合物。与无定形聚合物不同，半结晶聚合物在达到玻璃化转变温度之前无法愈合，因为结晶颗粒会阻止分子在此温度以下的运动。为了解释这种差异，我们开发了一种方法，在计算愈合时考虑到半结晶聚合物的结晶部分。我们在实验中使用了聚丙烯 (PP)，并根据我们之前描述的无定形聚合物愈合方法，用一种新方法计算了愈合。

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Calculation of the bonding strength of semi-crystalline polymers during overmolding

Injection molding is widely used in the plastics manufacturing industry. However, there is a need to better understand and calculate the bonding strength between the injection-molded part and the insert, especially for semi-crystalline polymers. The weldability of semi-crystalline polymers differs from that of amorphous polymers. Semi-crystalline polymers cannot heal until they reach their glass transition temperature, unlike amorphous polymers, as the crystalline particles prevent molecule motion below this temperature. To account for this difference, we have developed a method that takes into effect the crystalline parts of semi-crystalline polymers in the calculation of healing. We used polypropylene (PP) in our experiments, and calculated healing with a new method based on the method we previously described for the healing of amorphous polymers.

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来源期刊

Polymer Testing 工程技术-材料科学：表征与测试

CiteScore

10.70

自引率

5.90%

发文量

328

审稿时长

44 days

期刊介绍： Polymer Testing focuses on the testing, analysis and characterization of polymer materials, including both synthetic and natural or biobased polymers. Novel testing methods and the testing of novel polymeric materials in bulk, solution and dispersion is covered. In addition, we welcome the submission of the testing of polymeric materials for a wide range of applications and industrial products as well as nanoscale characterization. The scope includes but is not limited to the following main topics: Novel testing methods and Chemical analysis • mechanical, thermal, electrical, chemical, imaging, spectroscopy, scattering and rheology Physical properties and behaviour of novel polymer systems • nanoscale properties, morphology, transport properties Degradation and recycling of polymeric materials when combined with novel testing or characterization methods • degradation, biodegradation, ageing and fire retardancy Modelling and Simulation work will be only considered when it is linked to new or previously published experimental results.