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排灌机械工程学报
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排灌机械工程学报  0, Vol. Issue (): 13-    DOI:
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渠道防渗防冻胀复合型保温塑料板的试验研究
何武全1,2  郑水蓉3  沈长越1
(1.西北农林科技大学水利与建筑工程学院,陕西 杨凌 712100;2.旱区农业水土工程教育部重点实验室,陕西 杨凌 712100;3.西北工业大学理学院,陕西 西安 710072)
Experimental and Study on the Canal Seepage Control and Anti-Frost Heave of Compound Insulation Plastic Board
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摘要 提出了一种填充玉米秆碎粉的复合型聚氨酯泡沫保温塑料板,初步确定了其配方和制备工艺,通过试验研究了不同玉米杆碎粉粒径(0~0.45mm、0.45~1.5mm、1.5~4mm三种规格)和填充量对聚氨酯泡沫塑料的密度、压缩强度和导热性能的影响,以及不同的填充量及粒径对聚氨酯泡沫塑料的发泡时间、发泡成型效果的影响。结果表明当玉米秸杆碎粉粒径一定时,随着填充量的增加,填充玉米秸杆碎粉的聚氨酯泡沫保温材料的密度也增大,但压缩强度下降,当玉米杆碎粉粒径为0.45~1.5mm、填充量为30%时,制备的复合型聚氨酯泡沫塑料板的压缩强度(压缩50%)为185kPa,导热系数为0.038W/m•K,尺寸变化率(-40~+70℃)为±1%,能够满足渠道衬砌防渗工程中防冻胀破坏的性能要求。经测算与不填充玉米杆碎粉的聚氨酯泡沫塑料板相比,复合型泡沫塑料保温板的成本可降低约25%,而且能够充分利用农业生产的废弃物,减少丢弃或焚烧这些废弃物对环境造成的污染。
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关键词渠道防渗   防冻胀   玉米杆碎粉   保温塑料板   综合利用     
Abstract: A compound insulation plastic board of filled corn rod broken powder the polyurethane foam was invented, preliminary to decide its formula and preparation technology, according to the test results of different corn rod broken powder size (0 ~ 0.45 mm and 0.45 ~ 1.5 mm and 1.5 ~ 4 mm three kinds of specifications) and filling quantity of polyurethane foam plastics density, compression strength and thermal conductivity, and the influence of the different filling quantity and grain size of polyurethane foam plastic foam time, foam molding effect. The results show that as the corn stalk broken powder particle size must, along with the increase of filling quantity, filling, corn stalk broken powder of polyurethane foam insulation material density and the increase, but the compression strength drops, when corn rod broken powder particle size of 0.45 ~ 1.5 mm, filling content is 30%, the preparation of complex polyurethane foam plastic board compression strength (compression 50%) for 185 kPa, heat conduction coefficient is 0.038 W/m • K, variation of size (-40 ~+ 70 ℃) for plus or minus 1%, can satisfy the channel lining seepage control project for expansion in the performance requirements of destruction. According to the calculation and don't fill corn rod broken powder of polyurethane foam plastic board compared, the hybrid foam insulation board can reduce the cost of about 25%, and be able to make full use of agricultural production waste, reduce the waste away or burned the environmental pollution.
Key wordsCanal seepage control;Anti-frost heave;Corn rod broken powder   Insulation plastic board;Comprehensive Utilization   
引用本文:   
. 渠道防渗防冻胀复合型保温塑料板的试验研究[J]. 排灌机械工程学报, 0, (): 13-.
. Experimental and Study on the Canal Seepage Control and Anti-Frost Heave of Compound Insulation Plastic Board[J]. Journal of Drainage and Irrigation Machinery Engin, 0, (): 13-.
 
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