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style="font-size:16px;line-height:200%;font-family:宋體"><img src="/UploadFiles/FCK/2016-07/6360392168503125001381779.jpg" title="美國研究人員利用廢棄的煤灰開發(fā)出了輕量PU復(fù)合材料" alt="美國研究人員利用廢棄的煤灰開發(fā)出了輕量PU復(fù)合材料" width="600" height="400" border="0" hspace="0" vspace="0" style="width: 600px; height: 400px;"/></span></p><p style="text-indent: 32px;line-height: 200%"><span style="font-size:16px;line-height:200%;font-family:宋體">北卡農(nóng)業(yè)技術(shù)州立大學(xué)的復(fù)合材料中心研究所表示，這種材料可存儲在地下數(shù)十年而不會損害環(huán)境。該研究中心主任Kunigal Shivakumar稱，如果將它取出重新磨成粉末，還可用于生產(chǎn)制造。</span></p><p style="text-indent: 32px;line-height: 200%"><span style="font-size:16px;line-height:200%;font-family:宋體">他說："煤灰并非廢料，如果處理得當(dāng)，是很有價值的資源"。</span></p><p style="text-indent: 32px;line-height: 200%"><span style="font-size:16px;line-height:200%;font-family:宋體">混合后的材料可模塑成外飾板、蓋板和內(nèi)飾模具。他補(bǔ)充說："如果要長期存放，可注塑成大型塊狀體。"</span></p><p style="text-indent: 32px;line-height: 200%"><span style="font-size:16px;line-height:200%;font-family:宋體">項目助理研究教授Wade Brown名下持有這種PU加工工藝的部分專利，他表示：煤灰可作為新材料的原料，但與聚氨酯混合后仍然能夠保持化學(xué)惰性。</span></p><p style="text-indent: 32px;line-height: 200%"><span style="font-size:16px;line-height:200%;font-family:宋體">他補(bǔ)充說："這是尿烷的作用，煤灰只是它的存在形式。"</span></p><p style="line-height: 200%; text-align: center; text-indent: 0em;"><span style="font-size:16px;line-height:200%;font-family:宋體"><img src="/UploadFiles/FCK/2016-07/6360391929751562508549663.jpg" title="嵩陽煤機(jī)發(fā)電廠皮帶輸送機(jī)" alt="嵩陽煤機(jī)發(fā)電廠皮帶輸送機(jī)" width="600" height="400" border="0" hspace="0" vspace="0" style="width: 600px; height: 400px;"/></span></p><p style="text-indent: 32px;line-height: 200%"><span style="font-size:16px;line-height:200%;font-family:宋體">北卡州政府向該大學(xué)提供了為期兩年共40萬美元的研究經(jīng)費，用于研究煤灰的"有益再利用"。2014年共計有約39000噸的煤灰傾倒進(jìn)北卡伊頓附近的丹河。</span></p><p style="text-indent: 32px;line-height: 200%"><span style="font-size: 16px;line-height:200%;font-family:宋體">Shivakumar</span><span style="font-size:16px;line-height:200%;font-family:宋體">表示，這項創(chuàng)新的關(guān)鍵是，生產(chǎn)過程中不需要額外的熱能，可利用燒煤工廠的任何類型煤灰直接加工。消除熱能的過程減少了生產(chǎn)成本，可改善環(huán)境，"這是一項清潔技術(shù)"，他說。</span></p><p style="text-indent: 32px;line-height: 200%"><span style="font-size:16px;line-height:200%;font-family:宋體">這種材料中包含了75%的煤灰，這一含量比例有可能提高到80%。</span></p><p style="text-indent: 32px;line-height: 200%"><span style="font-size: 16px;line-height:200%;font-family:宋體">Shivakumar</span><span style="font-size:16px;line-height:200%;font-family:宋體">說，研究團(tuán)隊曾經(jīng)將這種材料放在測試盆內(nèi)數(shù)周，發(fā)現(xiàn)它既不溶解于水，也不吸收水分。</span></p><p style="text-indent: 32px;line-height: 200%"><span style="font-size:16px;line-height:200%;font-family:宋體">研究團(tuán)隊正積極努力，利用這種材料開發(fā)出具有商用價值的產(chǎn)品。</span></p><p style="text-indent: 32px;line-height: 200%"><a href="http://m.q7s81g3.cn/" target="_blank" title="嵩陽煤機(jī)"><span style="font-size:16px;line-height:200%;font-family:宋體">嵩陽煤機(jī)</span></a><span 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