不同質量比之環氧樹脂／聚胺基甲酸酯互穿聚合物網狀結構體性質

The Properties of Epoxy Resin/Polyurethane Interpenetrating Polymer Networks with Different Weight Ratios

劉旭晟(Hsu-Chen Liu) ； 李文昭(Wen-Jau Lee)

《林產工業》 37卷3期 (2018/09) Pp. 155-164

https://doi.org/10.6561/FPI.201809_37(3).0004

摘要

環氧樹脂（Epoxy resin；ER）為現今最重要的合成樹脂之一，具備優異的耐水性、耐藥品性、機械性質、熱性質與耐腐蝕性等優點，廣泛應用於表面塗料、結構膠合劑、絕緣材料、強化複合材料與封裝材料等用途，然具有性質硬脆，缺乏耐衝擊及能量吸收能力的缺點，而聚胺基甲酸酯樹脂（Polyurethane resin；PU）則為一具備高韌性及衝擊能量吸收能力的合成樹脂。本研究利用市售雙酚A型ER樹脂與自行合成含NH末端基PU樹脂以質量比100／0、100／2.5、100／5.0、100／7.5、100／10.0混和所調配之ER／PU摻合樹脂（Blended resins）製備互穿聚合物網狀結構體（Interpenetrating polymer networks）。試驗中除分析ER樹脂與PU樹脂之反應性外，並探討PU樹脂添加量對所製作ER／PU摻合樹脂之物理性質、機械性質及熱性質之影響。由試驗結果得知，ER樹脂與PU樹脂在高溫環境下可發生化學的架橋反應，硬化後的ER／PU摻合樹脂具備良好的尺寸安定性及耐溶劑性，質量比100／2.5的ER／PU摻合樹脂具有最大的彎曲強度、破壞能量及衝擊強度，然隨PU樹脂添加比例再提高，摻合樹脂的機械性質降低；DMA分析顯示添加PU樹脂可改善ER樹脂之阻尼性質；TGA分析則顯示ER／PU摻合樹脂之熱安定性較單純ER樹脂為低。

關鍵字

摻合樹脂 ； 環氧樹脂 ； 互穿聚合物網狀結構體 ； 聚胺基甲酸酯

並列摘要

Epoxy resin (ER) is one of the most important synthetic resins nowadays. It has excellent water resistance, chemical resistance, mechanical properties, thermal properties and corrosion resistance. It is widely used in surface coatings, structural adhesives, insulating materials, reinforced composites and wafer packaging. However, its properties are hard and brittle, which lacks the capability of impact resistance and energy absorption. On the other hand, polyurethane resin (PU) is a synthetic resin having high toughness and impact energy absorption capability. In this study, ER/PU blended resins were prepared by mixing a commercial bisphenol A-type ER resin with a self-synthesized NH-terminated PU resin by a weight ratio of 100/0, 100/2.5, 100/5, 100/7.5 and 100/10, respectively. In addition to analyzing the reactivity between ER resin and PU resin, the effects of the amount of PU resin added on the physical, mechanical and thermal properties of the ER/PU blended resin were also investigated. The experimental results showed that the ER resin and the PU resin could undergo a chemical crosslinking reaction in a high temperature environment. The ER/PU blended resins had good dimensional stability and solvent resistance after cured. The ER/PU blended resin with a weight ratio of 100/2.5 had the highest bending strength, breaking energy and impact strength than others. However, as the PU resin addition ratio was further increased, the mechanical properties of the blended resin were lowered. DMA results showed the damping properties of ER resin could be improved by blending with PU resin. TGA analysis showed that the thermal stability of the ER/PU blended resins was lower than that of the pure ER resin.

並列關鍵字

Blended resins ； Epoxy resin ； Interpenetrating polymer networks ； Polyurethane