蛇紋石廢料製成遠紅外線功能性複合材料之研究

A Study on FIR Functional Composites Made from Waste Serpentine

易其樟(Chi-Chang Yi)

指導教授 ： 鄭大偉

國立臺北科技大學/工程學院/材料及資源工程系所/碩士(2006年)

摘要

蛇紋石（Serpentine）是國內最重要自產礦產之一，為富含鎂鐵之矽酸鹽礦物，屬於變質岩類。主要用途為煉鐵助熔劑、建築石材、肥料或是其他化學工業。蛇紋石廢料來源為石材開採、加工過程中產生大量下腳料及污泥，以及交付煉鋼業使用之蛇紋石有粒度上的限制（6 mm ~ 80 cm），因此破碎後粒度小於6 mm之篩選尾礦即成為廢料，目前大部分的廢料未能夠有效利用，對於台灣礦產資源浪費甚鉅。本研究將蛇紋石廢料細化，與高分子基材EVA（乙烯-醋酸乙烯酯共聚物）製成具備遠紅外線功能性之複合材料，期能將此複合材料應用於鞋墊與保健產品上。
經研究結果顯示，蛇紋石具優越之遠紅外線放射係數及蓄熱保溫性，其放射係數與市售遠紅外線粉體相當，蓄熱保溫性則高於市售遠紅外線粉體4 ~ 6 ℃，顯示蛇紋石具遠紅外線功能之發展潛力。EVA/蛇紋石複合材料之熱傳導率與遠紅外線蓄熱性呈現正比之關係。添加蛇紋石製成複合材料，可提升基材之拉伸強度，隨添加量增加，拉伸強度有增加之趨勢。隨混煉溫度增加，因產生熱裂解現象，高分子基材之拉伸強度有下降之趨勢。而複合材料則受粉體分散性之影響，拉伸強度有增加之趨勢。因此將蛇紋石廢料製成複合材料，除具備遠紅外線功能性外，也有增強機械性質之效果，可應用於紡織品、鞋墊及保健產品上，提供做為蛇紋石廢料資源化之另一途徑。

關鍵字

蛇紋石 ； EVA ； 複合材料 ； 遠紅外線功能 ； 拉伸強度

並列摘要

Serpentine is an important industry mineral product in Taiwan. It is a kind of hydrated magnesium silicate formed from gabbro and olivine during metamorphism process. The major applications for serpentine are dimension stone for building decoration, flux material for iron making, fertilizer and other chemical engineering usages. There are great quantity of serpentine wastes produced every year, and has not utilized effectively. This is due to well-developed joints in the serpentine orebody as well as the stringent requirements of the particle size (6 mm ~ 80 mm) and chemical composition of serpentine by iron making company. This research work blended serpentine powders and EVA (ethylene – vinyl acetate copolymers) to make far infrared ray (FIR) functional composites. The major study was focused in the effect of far infrared ray function and mechanical property. This composite can be applied to the shoe-pad and health product.
Experimental results indicated that serpentine had the superior far infrared ray emission coefficient and the regeneration heat preservation. Its emission coefficient was similar with the FIR powder brought from market, and the regeneration heat preservation was higher than market FIR powder approximately 4 ~ 6 ℃. This shows that serpentine has development potential for FIR functional characteristic. The tensile strength of EVA/Serpentine composite was better than polymer itself. Increasing the quantity of the serpentine powders will increase tensile strength. Increasing blending temperature will decrease tensile strength, due to the heat decomposition phenomenon. The composite made from waste serpentine may apply on the textile, the shoe-pad and the health product, providing another way to reutilization waste serpentine.

並列關鍵字

Serpentine ； EVA ； Composites ； FIR functional ； Tensile strength

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