| 第 40 卷第 1 期 |  | Vol. 40 No. 1 | | 2010 年 2 月 | Feb 2010 |
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所屬欄目：功能材料
造紙黑液干粉用量對PVC／CPE熱塑性彈性體性能的影響 |
| 袁桂芳1，羅 夢(mèng)1，張 芳2，舒友亮3，蘇勝培1*
（1. 湖南師范大學(xué) 化學(xué)化工學(xué)院，湖南 長(cháng)沙 410081；2. 湖南五強產(chǎn)業(yè)集團股份有限公司 新型材料分公司，湖南 長(cháng)沙 410205；3. 懷化市洪江萬(wàn)源化工有限公司，湖南 懷化 418200） |
| 摘 要：以造紙黑液經(jīng)硫酸中和處理脫水后的黑液干粉為填料，采用熔融共混法制備了聚氯乙烯（PVC）／氯化聚乙烯（CPE）／黑液干粉熱塑性彈性體復合材料。利用FTIR和TGA測試了黑液干粉的結構和熱性能；利用微控電子萬(wàn)能試驗機、TGA研究了黑液干粉含量對彈性體復合材料的力學(xué)性能、熱降解性能和老化性能的影響。結果表明：黑液干粉中木質(zhì)素等有機物含量為33%；添加黑液干粉能改善PVC／CPE彈性體復合材料的力學(xué)性能，當黑液干粉含量為30 phr時(shí)，拉伸強度保持不變，斷裂伸長(cháng)率提高了8%，撕裂強度提高了5%；采用硬脂酸處理的黑液干粉，其用量為30 phr時(shí)，復合材料綜合性能較佳，其拉伸強度提高了7%，斷裂伸長(cháng)率提高了12%，撕裂強度提高了18%；黑液干粉含量30 phr時(shí)，PVC／CPE彈性體復合材料熱降解溫度提高了5℃；添加黑液干粉的復合材料，在熱氧老化后拉伸強度和邵爾A型硬度增加，斷裂伸長(cháng)率稍有下降。 |
| 關(guān)鍵詞：造紙黑液干粉；聚氯乙烯；氯化聚乙烯；熱塑性彈性體 |
| 中圖分類(lèi)號：TQ050.4+3 文獻標識碼：A 文章編號：1009-9212（2010）01-0046-06 |
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| Influence of the Loading of Black Liquor Powder from Paper Industry on the Properties of PVC／CPE Thermoplastic Elastomer |
| YUAN Gui-fang1，LUO Meng1，ZHANG Fang2，SHU You-liang3，SU Sheng-pei1*
（1. College of Chemistry and Chemical Engineering，Hunan Normal University，Changsha 410081，China；2. Hunan Wuqiang Corporation Group New Materials Branch，Changsha 410205，China；3. Huaihua Hongjiang Wanyuan Chemical Co. Ltd.，Huaihua 418200，China） |
| Abstract：PVC／CPE／black liquor powder thermoplastic elastomers were prepared by melt blending using black liquor powder，which was prepared from black liquor in paper industry after neutralized by sulfuric acid and dried. The structure of black liquor powder was characterized using FTIR while the thermal properties were tested using TGA. The influence of the loading of black liquor powder on the mechanical properties，the thermal degradation properties，and the thermo-oxidative aging of PVC／CPE composites were studied using micro-controlled electronic universal testing machine and TGA. The experimental results indicated that the lignin content in the black liquor powder was about 33%. The mechanical properties of PVC／CPE／black liquor powder composites were improved due to the presence of black liquor powder. It has also been found that there was no change in the tensile strength of PVC／CPE compesites at a black liquor powder loading of 30 phr while the elongation at break and tear strength were increased up to 8% and 5%，respectively compared to the composites without black liquor powder. The stearic acid treated black liquor powder could enhance the comprehensive property of PVC／CPE composites. The tensile strength，elongation at break，and tear strength of PVC／CPE／black liquor powder composite at a loading of 30 phr were increased up to 7%，12%，and 18% respectively compared to composites without black liquor powder. The TGA results indicated that the thermal degradation temperature of PVC／CPE composites were enhanced. The difference was about 5℃ at a black liquor powder loading of 30 phr. In general，the tensile strength and Shore A hardness of PVC／CPE／black liquor powder composites were increased while the elongation at break was slightly decreased after thermo-oxidative aged. |
| Key words：black liquor powder；PVC；CPE；thermoplastic elastomers |
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基金項目：湖南師范大學(xué)瀟湘學(xué)者啟動(dòng)資金資助課題 （化050613）。
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作者簡(jiǎn)介：袁桂芳（1974-），女，湖南慈利人，碩士研究生，研究方向：高分子復合材料。（E-mail：guifangyuan2007@gmail.com）
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聯(lián) 系 人：蘇勝培，教授，博士生導師，研究方向：高分子復合材料。（E-mail：sushengpei@gmail.com）
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收稿日期：2009-12-08
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