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首页> 外文期刊>Journal of Applied Polymer Science >Optimization of Adhesive Joints of Low Density Polyethylene (LDPE) Composite Laminates with Polyolefin Foam Using Corona Discharge Plasma
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Optimization of Adhesive Joints of Low Density Polyethylene (LDPE) Composite Laminates with Polyolefin Foam Using Corona Discharge Plasma

机译：利用电晕放电等离子体优化聚烯烃泡沫低密度聚乙烯（LDPE）复合层压板的粘合接头

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摘要

In this work, surface modification of low density polyethylene (LDPE) film has been carried out to optimize adhesive joints with polyolefin foam for uses in technological applications. LDPE films were modified in a continuous way using corona discharge plasma with different powers, ranging from 200 to 600 W and several film advance rates in the 5-20 m min(-1) range. Changes in surface wettability have been studied with contact angle measurements and subsequent solid surface energy calculation. A polyurethane adhesive was used to join the LDPE film to a polyethylene foam. Mechanical performance of the adhesive joints has been determined by T-peel tests and also the aging effects of several hydrothermal conditions have been studied to evaluate the usefulness of these laminate composites in technological applications. Results show that corona discharge powers between 400 and 600 W are suitable in terms of wettability improvement; on other hand, a slight decrease in surface wettability as the film advance rate increases is detected but the overall changes as a consequence of the film advance rate in the 5-20 m min(-1) range are small if compared to changes derived from working powers in the 200600 W range. Adhesive joints offer excellent mechanical performance and good durability in hydrothermal conditions thus being appropriate for technical applications.
机译：在这项工作中，已经进行了低密度聚乙烯（LDPE）膜的表面改性，以优化与聚烯烃泡沫的粘合接头，以用于技术应用。 LDPE膜使用电晕放电等离子体以200至600 W的不同功率以5-20 m min（-1）范围内的几种薄膜前进速度以连续方式进行修饰。已经通过接触角测量和随后的固体表面能计算研究了表面润湿性的变化。使用聚氨酯粘合剂将LDPE膜连接到聚乙烯泡沫上。粘合剂接头的机械性能已通过T剥离试验确定，并且还研究了几种水热条件的老化效应，以评估这些层压复合材料在技术应用中的实用性。结果表明，在提高润湿性方面，电晕放电功率在400至600 W之间是合适的。另一方面，检测到随着膜前进速度的增加，表面润湿性略有下降，但与5到20 m min（-1）范围内的膜前进速度相比，由于膜前进速度而导致的总体变化较小。工作功率在200600 W范围内。胶粘接头在水热条件下具有出色的机械性能和良好的耐久性，因此非常适合技术应用。

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