矽烷封端聚醚樹脂導入尿素與環己烷結構對阻燃性能的影響

The Flame Retardant Property of Urea and Cyclohexane Modified Silane Terminated Polyether Resin

鄭世銘(Shin-Ming Cheng)

指導教授 ： 李景恒

國立虎尾科技大學/工程學院/材料科學與綠色能源工程研究所/碩士(2013年)

https://doi.org/10.6827/NFU.2013.00115

摘要

高分子材料的發展在這數十年間呈現指數增長態勢，現今日常生活中充斥著高分子材料產品，然而高分子材料卻有易燃性的致命弱點。20世紀90年代末，席捲全球的高分子材料”無鹵阻燃化”的浪潮再次提醒了環保與人類間和諧發展的重要性。無鹵聚合物阻燃材料正是這一需求的必然產物。至今無鹵阻燃體系有許多系統，本篇研究以探討膨脹阻燃體系為主。近年來有一種矽烷封端聚醚系的彈性填縫用樹脂材料，其固化後非常容易燃燒，即使添加高劑量耐燃劑，裂解速度仍快，阻燃性能不理想。故本研究將聚醚結構中，導入尿素與環己烷之結構，再配合膨脹阻燃體系之耐燃劑，以期降低裂解速度並提高聚合物的阻燃效能。本研究將以市售之矽烷封端聚醚樹脂加入阻燃劑，製成對照組試樣：另以導入尿素與環己烷之矽烷封端聚醚樹脂加入等量的阻燃劑，製成實驗組試樣，並以垂直燃燒實驗比對阻燃性能。此外，再以接著強度與硬度試驗來比較材料的功能性差異。實驗結果發現，在聚醚結構中導入尿素與環己烷結構能夠大幅提高裂解溫度，降低裂解速率，並改變炭層結構，明顯提高阻燃性。而對於功能性方面，兩者接著強度與柔韌性都隨著阻燃劑含量增加而減少，但是改質後的樹脂，柔韌性明顯的提升了。

關鍵字

阻燃 ； 聚醚 ； 矽烷

並列摘要

Abstract
Polymers are widely used during the decades. Now, polymer products fall upon everybody’s life, but polymer have a fatal weakness in flammability. At the end of the 1990s, All the world need “Halogen-free flame retardant " , and it waked up the significance for harmony between environmental protection and human development. Therefore the polymer with halogen-free flame retardant is necessary for human. There are many halogen-free flame retardant systems today. In this study an intumescent flame retardant (IFR) system was used. In generally, the IFR is composed of acid source, gas source and carbon source. In this study, the ammonium polyphosphate ( APP ) was used as acid source, the melamine cyanurate ( MCA ) was used as gas source, but there is no carbon source used for the IFR. In recent years, a silane terminated polyether resin was used as sealant. When the resin is cured, it became flammable. And even if the resin was added with some flame retardants, it still has a rapid pyrolysis rate, so it has no good flame retardant properties. In this study, urea, cyclohexane and IFR were added to the silane terminated polyether resin to reduce pyrolysis rate and to improve flame retardant properties. In this study, the commercially available silane terminated polyether resin with IFR was used as control group, and the resin with urea, cyclohexane and IFR was used as an experimental group. A vertical open flame test was carried out to compare their flame retardant properties. Furthermore, the adhesion strength test, the flexibility test and hardness test were carried out to compare their mechanical property. The results showed that the polyether with urea and cyclohexane can raise pyrolysis temperature, reduce pyrolysis rate and change carbonized structure, so that the retardant properties of the resin can be evidently improved. Although the adhesion strength and flexibility of the resin decrease with the increase of flame retardants content, but the flexibility of the modified resin was better than the unmodified resin.

並列關鍵字

flame retardant ； polyether ； silane

參考文獻

[45]Robert M. Silverstein, et al.，1992，有機光譜學，紅外光

譜，遊瑞成，財團法人徐式基金會，台北市。

Chem.Eng. News, 88 (1), p 10.

[4] Kellyn Betts, 2010, ” Flame retardant travels the

globe ”, Chem. Eng. News, 2010, 88 (46), p 8.