کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4913713 | 1428768 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Flexible and stretchable polyurethane/waterglass grouting material
ترجمه فارسی عنوان
مواد قابل انعطاف و کششی پلی اورتان / آب جوش
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کلمات کلیدی
مواد پرکننده، پلی اورتان، لیوان آب، انعطاف پذیری، کشش پذیری،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
Flexibility and stretchability are of ever increasing importance in constructing high-performance grouting materials. Herein, a facile, effective and cost-efficient strategy to make organic-inorganic hybrid chemical grouting material in a “flexible and stretchable” way was based on polymerization of carbon double bond and excellent synergistic interactions among N-Methylol acrylamide, butenediol, waterglass and prepolymer. Upon the optimal percentages of waterglass (44%), N-Methylol acrylamide (3.5%), butenediol (1.5%), Alkylphenol polyoxyethylene (OP-9, 0.5%), 2,2â²-azobis[2-(2-imidazolin-2-yl)propane] (0.35%), 2,2-dimorpholinodiethylether (DMDEE, 0.15%) and prepolymer (50%), the obtained polyurethane/waterglass grouting material with three-dimensional interpenetrating network structure displayed an excellent flexibility, satisfactory compressive strength of 13.4Â MPa at 50% compression state, and relatively large elongation of up to 60% with a stable stretching for 200Â times. The grouting material was mainly composed of amorphous polyurethane and crystalline polysilicic acid/NaHCO3/Na2CO3 composite, and its probable formation mechanism was proposed. Additionally, the grouting material possessed favorable thermal stability and repairment performance for roadway cracks. This work may open a simple and convenient avenue for the preparation of organic-inorganic hybrid chemical grouting material with flexibility and stretchability.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 138, 1 May 2017, Pages 240-246
Journal: Construction and Building Materials - Volume 138, 1 May 2017, Pages 240-246
نویسندگان
Zhengpeng Yang, Xuefeng Zhang, Xuan Liu, Xuemao Guan, Chunjing Zhang, Yutao Niu,