现代矿业
現代礦業
현대광업
Express Information of Mining Industry
2011年
11期
30-33,60
,共5页
陈晓龙%韩跃新%王成梁%孙永升
陳曉龍%韓躍新%王成樑%孫永升
진효룡%한약신%왕성량%손영승
硅藻土复合纤维%微观结构%改性机理%红外光谱分析%差示扫描量热法
硅藻土複閤纖維%微觀結構%改性機理%紅外光譜分析%差示掃描量熱法
규조토복합섬유%미관결구%개성궤리%홍외광보분석%차시소묘량열법
DCCF%Microstructure%Modification mechanism%FT-IR%DSC
以不同掺量的硅藻土复合纤维制备改性沥青,通过红外光谱和差示扫描量热法对基质沥青及改性沥青的微观结构进行分析,研究其改性机理。研究结果表明,改性剂与基质沥青没有发生化学反应,改性剂在沥青中均匀分散,选择性的吸附沥青中的组分,使沥青的胶体结构重新调整,沥青中部分组分的存在形式及数量发生变化,这些变化使沥青的微观结构改变,导致改性沥青的聚集态发生转变的组分数量减小,温度稳定性明显提高。硅藻土复合纤维改性沥青的过程是一个沥青自身微观结构改善的物理镶嵌共混过程。
以不同摻量的硅藻土複閤纖維製備改性瀝青,通過紅外光譜和差示掃描量熱法對基質瀝青及改性瀝青的微觀結構進行分析,研究其改性機理。研究結果錶明,改性劑與基質瀝青沒有髮生化學反應,改性劑在瀝青中均勻分散,選擇性的吸附瀝青中的組分,使瀝青的膠體結構重新調整,瀝青中部分組分的存在形式及數量髮生變化,這些變化使瀝青的微觀結構改變,導緻改性瀝青的聚集態髮生轉變的組分數量減小,溫度穩定性明顯提高。硅藻土複閤纖維改性瀝青的過程是一箇瀝青自身微觀結構改善的物理鑲嵌共混過程。
이불동참량적규조토복합섬유제비개성력청,통과홍외광보화차시소묘량열법대기질력청급개성력청적미관결구진행분석,연구기개성궤리。연구결과표명,개성제여기질력청몰유발생화학반응,개성제재력청중균균분산,선택성적흡부력청중적조분,사력청적효체결구중신조정,력청중부분조분적존재형식급수량발생변화,저사변화사력청적미관결구개변,도치개성력청적취집태발생전변적조분수량감소,온도은정성명현제고。규조토복합섬유개성력청적과정시일개력청자신미관결구개선적물리양감공혼과정。
The modified asphalt was prepared by adding different mixing amounts of diatomite-cellulose composite fiber.In order to research the modified mechanism,the microstructure of matrix asphalt and DCCF modified asphalt was analyzed by FT-IR and DSC.The results showed that there was no chemical reaction between DCCF and matrix asphalt.The DCCF uniformly dispersed in the asphalt,and selectively adsorbed components of asphalt,making the colloform texture of asphalt retuned,the form and quantity of some components in asphalt changed.These changes altered the microstructure of asphalt and decreased amount of the congeries state.Thus the temperature susceptibility of the DCCF-modified asphalt was improved obviously.DCCF modifying asphalt was a physical enchase blending process,during which the microstructure of asphalt was improved.