环保型改性糠醛及其环氧灌浆材料  

Environmental-friendly modified furfural and its epoxy grouting material

作　　者：雷翅[1] 高南[1] 张亚峰[2,3] 廖兵[1] 邝健政[1,2,3] 王永珍[1] 

机构地区：[1]中科院广州化学研究所,广东广州510650 [2]中科院广州化灌工程有限公司,广东广州510070 [3]广东省化学灌浆工程技术研究开发中心,广东广州510650

出　　处：《新型建筑材料》2011年第12期27-31,共5页New Building Materials

基　　金：广东省自然科学基金项目(9151065004000002)

摘　　要：通过羟醛缩合反应,糠醛与含α-H的脂肪族醛合成α,β-呋喃丙烯醛代替糠醛,解决糠醛-丙酮体系中糠醛毒性大、易挥发及刺激性强等问题。测试了糠醛与各种α-H脂肪族醛反应的产率及产物的性质,并对其各产物进行结构表征。通过对制备的环氧灌浆材料性能进行分析比较,优选出3-呋喃基-2-乙基-丙烯醛(FEA)为稀释剂制备浆材。其浆材黏度为80～97.5 mPa.s、28 d抗压强度为96.76～99.98 MPa、拉伸剪切强度为5.07～6.06 MPa。毒性试验表明,FEA的LD50为1260 mg/kg,急性经口毒性属于低毒毒级。Through the aldol condensation reaction,α,β-furyl-acrolein were synthesized using furfural and aliphatic aldehydes containing α-H to replace furfural to solve problems of furfural as diluents which was toxic,volatile and irritant in epoxy grouting material of furfural-acetone system.Reaction yield and product properties of n-butyraldehyde,n-valeraldehyde,n-heptylaldehyde and so on with furfural were determined.At the same time,the products of α,β-furyl-acrolein were characterized.Comparing with properties of various α,β-furyl-acrolein as diluents of epoxy grouting material,the 3-furyl-2-ethyl-acrolein（FEA） has the best performance.The results showed the epoxy grouting material of viscosity,28 d compressive strength and tensile shear strength correspond to 80～97.5 mPa·s,92.76～99.98 MPa,5.07～6.06 MPa.Meanwhile,toxicity tests show that the LD50 of FEA was 1260 mg/kg,acute oral toxicity belongs to low poison grade.

关 键 词：糠醛 α β-呋喃丙烯醛 环保型 环氧灌浆材料 

分 类 号：TV441.3[水利工程—水工结构工程]