温室新型覆盖材料PETP薄膜光热性能研究
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摘要
连栋温室中,辐射、传导、对流、水分蒸发、作物蒸腾以及冷凝结露引起的湿热交换等蓄热、放热过程的耦合以及外界寒冷气象参数的动态变化时刻影响着温室的内部环境。覆盖材料的透光性能、保温性能、强度、耐候性、抗老化性、防雾滴性等是评价温室用农膜的重要方面。
     现有温室覆盖材料主要有玻璃,聚碳酸酯板,聚氯乙烯、聚乙烯和乙烯—醋酸乙烯薄膜,但各自均存在缺点,研究开发新型覆盖材料具有重要意义。聚对苯二甲酸乙二醇酯(PET)是一种新型聚合材料,物理性能优异,目前在化工、包装、医疗等行业有着广泛的应用,本文将主要研究改性后的PETP薄膜作为农业覆盖材料的光热性能。
     试验采用稳态热箱法在室内条件下,测试了新型覆盖材料PETP薄膜和其它几种农业常用覆盖材料的热工性能。通过分析所测各种材料的传热系数(K)的大小,研究发现0.1mm厚PETP薄膜保温性能介于8mm厚PC中空板和0.15mm厚PVC薄膜之间,且随厚度增加,保温性能有所提高。同时测试了各覆盖材料的全光辐射透过率并进行分析比较,研究发现PETP薄膜在冬季夜间温室内热辐射集中的5-25μm波段辐射的透过率远小于PE和PVC薄膜。热辐射透过率在一定程度上反映出材料的保温性能,从另一侧面证明了各种覆盖材料传热性能热箱法的实测结果。另外在太阳辐射范围,PETP薄膜表现出优异的透射性能,与温室覆盖材料理想透射曲线基本吻合。
In multi-span greenhouses, the coupling of heat storage and release courses caused by radiation, conduction, convection, wet evaporation, crop rising and condensation and the dynamic change of the outdoor cold weather parameters affect the indoor environment momently. Such aspects of covering materials as light permeation performance, heat preservation performance, endurable performance, anti-aging performance, dew drips resistance performance and intensity are the important indexes to appraise the qualities of the covering films for greenhouses.
    The main covering materials in existence for greenhouses are glasses, PC hollow board, PVC, PE and EVA plastic films. Each of them has shortcomings. It badly demands researching and developing new agricultural covering materials. Polyethylene terephthalate (PET) is a new type of polymeric plastic materials. With the excellent physics performance, PET has been widely applied into many industries such as chemical industry, packaging industry and medical treatment trade. The paper mainly researches on the photothermic property of PETP film (changed by PET materials) utilizing as agricultural covering materials.
    Under the indoor steady state, the thermal properties of new type PETP film and several kinds of common covering materials have been measured by the method of one-dimensioned thermal insulated box. After analyzing the thermal transmittance (K) of different materials, the following conclusion is drawn that the heat preservation property of PETP film with 0.lmm thickness is between those of 8mm thick hollow PC hollow board and 0.15mm thick PVC film. Moreover, the heat preservation capability of PETP film will augment with the increase of thickness. The whole spectrums of PETP film and other covering materials have been measured simultaneously. After comparing the spectrums, it is found that in winter during 5~25um, the main radiation extent of inside heat radiation, the heat transmitting rate of PETP film is further less than those of the others. Transmitting rate can reflects the heat preservation performance in a degree. So that can prove, from another aspect, the experimental results of the heat transfer performances of various covering materials. Moreover, PETP film has excellent property of transmitting solar radiation, the chart of which basically tallies with the ideal transmitting chart of covering materials for greenhouses.
引文
[1] 中共中央宣传部.“三个代表”重要思想学习纲要.北京:学习出版社,2003,1~5
    [2] 周长吉.中国设施农业及其对测控技术的需要.见:周长吉.中国温室工程技术理论与实践.北京:中国农业出版社,2003,39~44
    [3] 崔引安.农业生物环境工程.北京:中国农业出版社,1994,18~54
    [4] 周长吉.现代化设施农业发展概况.见:周长吉.中国温室工程技术理论与实践.北京:中国农业出版社,2003,45~50
    [5] 王松涛,冯广和,陈端生,等.论我国设施园艺的宏观管理.农业工程学报,1999,15:153~158
    [6] 潘锦泉.我国引进的温室设施及国内温室的发展.农业工程学报,1989,5(2):64~74
    [7] 宋述尧,蔡启运,郑建东.设施园艺的能源开发.中国蔬菜,1991,(5):49~52
    [8] 彭靖里.国内外设施农业栽培技术发展及云南省的差距.农业系统科学与综合研究,2001,17(3):236~240
    [9] 邱建军,陈端生,李哲敏,等.温室保温覆盖材料传热系数的测定.农业工程学报,1996,12(增刊):116~122
    [10] 陈青云.PO与PVC薄膜温室的光环境及其薄膜流滴性的关系.农业工程学报,1997,13(1):130~135
    [11] 周长吉.双层充气温室经济技术评价.农业工程学报,1999,3(1):159~163
    [12] Rosa R. Solar and Thermal Radiation inside a Multispan Greenhouse. J. Agric. Engng Res, 1988,40:285~295
    [13] Nijiskens J., Deltour J., Coutisse S., et al. Heat Transfer Through Covering Materials of Greenhouses. Agricultural and Forest Meterology, 1984, 33:193~214
    [14] Garzoli K. V., Blackwell J. An Analysis of the Nocturnal Heat Loss from a Double Skin Plastic Greenhouse. Journal of Agricultural Engineering Research, 1987, 36:75~85
    [15] Staley L. M., Monk G.J., Molnar J. M. The Influence of Thermal Curtains on Energy Utilization in Glasshouse. J. Agri. Engng. Res., 1986, 33: 127~139
    [16] 周长吉,程勤阳,周新群,等.缀铝膜保温幕保温性能测试分析.农业工程学报,1999,15(3):191~195
    [17] 安志信.蔬菜节能日光温室的建造及栽培技术.天津:天津科技出版社,1994,55~70
    [18] 董仁杰.生态温室系统环境研究:[博士学位论文].北京:中国农业大学,1997
    [19] 哈南J.J.,霍利D.,戈德斯贝里K.L.温室管理(,苏大华等译).北京:科学出版社,1984,102~116
    [20] 林真纪夫.温室熟关实验研究.千葉大学学报,1985:35~41
    [21] 陈端生,郑海山.日光温室气象环境综合研究(一)——墙体、覆盖物热效应研究初报.农业工程学报,1990,6(2):77~81
    [22] Garzoli K.V., Blackwall J. An analysis of the nocturnal heat loss from a single skin plastic greenhouse. J. Agri. Engng. Res., 1981, 26: 203~214
    
    
    [23] 秦立洁,陈宇,高继志.农用塑料制品生产与应用.北京:化学工业出版社,2002,97~100
    [24] 王文广,田雁晨,吕通建.塑料材料的选用.北京:化学工业出版社,2001,90~96
    [25] 潘强,黄之栋,马承伟.华北型连栋塑料温室节能对策与实践.农业工程学报,1999,15(6):70~76
    [26] Ted H. S. A portable Polystyrene-Pellet. Insulation System for Greenhouses. Trans.Of ASAE,1981, 24(5):1291~1295
    [27] 角田邦彦.日本聚乙烯类农用薄膜的耐久、保温、无滴和防雾技术.中国塑料,2003,17(1):1~9
    [28] 陈端生.设施园艺生产对覆盖材料性能的要求.农村实用工程技术,2003,1:25~27
    [29] 周正华,戴建平.我国PET瓶的生产应用现状及发展前景.合成技术及应用,2001,16(3):21~25
    [30] 蔡亮珍,赵建青.高阻隔性PET瓶的研究进展.塑料,2001,30(1):20~23
    [31] 赵均.PET工程塑料研究进展.河南化工,2002,(5):20~23
    [32] 赵均,王娟.PET工程塑料及其在轿车上的应用.工程塑料应用,2001,29(9):24~27
    [33] 李志刚,石宝亮.我国非纤用聚酯发展方向.当代石油石化,2001,9(8):6~9
    [34] 国内PET薄膜市场发展趋势分析.合成材料老化与应用,2000,1:31~32
    [35] 首次开发出完全非晶态非取向PET薄膜.Japan Chem Week,2000,41(2093):2
    [36] Wilson Wong, Kwong Chan, Kwok Wing Yeung, et al. Surface structuring of poly(ethylene terephthalate ) by UV excimer laser. Journal of Materials Processing Technology, 2003, 132:114~118
    [37] Chaari F. Crystallization of poly(ethylene terephthalate) under tensile strain: crystalline development versusmechanicaibehaviour. Polymer, 2003, 44:473~479
    [38] Bárá ny T., Karger-Kocsis J., Czigány T. Effect of hygrothermal aging on the essential work of fracture response of amorphous poly(ethylene terephthalate)sheets. Polymer Degradation and stability, 2003, (82): 271~278
    [39] 邱建军.温室保温覆盖材料传热系数的测定:[硕士学位论文].北京:中国农业大学,1995
    [40] 王宇欣.高寒地区大型连栋充气温室节能保温机理及结构可靠性的系统研究:[博士学位论文].北京:中国农业大学,2000
    [41] 周新群.蜂窝结构材料保温性能及其应用研究:[博士学位论文].北京:中国农业大学,1998
    [42] 浙江农业大学编.蔬菜栽培学总论.北京:农业出版社,1979,20~32
    [43] 孙可群.温室建筑与温室植物生态.北京:中国林业出版社,1982,66~70
    [44] 童钧耕,卢万成.热工基础.上海:上海交通大学出版社,2001,168~180
    [45] 张真和.我国农用塑料应用技术的发展与展望.塑料,2001,30(2):9~12
    [46] Teramura A. H. Effects of ultraviolet-B radiation on the growth and yield of crop plants. Physiol Plant, 1983, 58: 415~427
    [47] Kumagai T., Hidema J., Kang H. S., et al. Effects of supplemental UVB radiation on the growth and yield of two cultivars of Japanese lowland rice under the field in a cool rice growing region of Japan Agriculture. Ecosystems and Environment, 2001, 83:201~208
    [48] 魏胜林,王家保,李春保.蓝光和红光对菊花生长和开花的影响.园艺学报,1998,25(2):
    
    203~204
    [49] Ahmad M., Cash more AR. HY4 gene of Arabidopsis thaliana encodes a protein with characteristics of a blue-light photoreceptor. Nature, 1993, 366:162~166
    [50] Christie J.M., Reymond P., Powell G. K., et al. a flavoprotein with the properties of a photoreceptor for phototropism. Science, 1998, 282:1698~1701
    [51] Lin C.T., Yang H. Y., Guo H. W. Enhancement of blue-light sensitivity of Arabidopsis seedlings by a blue light receptor cryptochrome 2. Proc Natl Acad Sci, 1998, 95: 2686~2690
    [52] Wellmann E. UV irradiation in photomorphogenesis. In: Mohr H., Shropshire W., eds. Encyclopedia of Plant Physiology. Berlin: Springer-verlag, 1983, 745~756
    [53] Hughes J., LamparterT., MittmannF., et al. A prokaryotic phytochrome. Nature, 1997, 386:66
    [54] Lamparter T., Mittmann F., Gartner W., et al. Characterization of recombinant phytochrome from the cyanobacterium Synechocytis. Proc Natl Acad Sci, 1997, 94: 11792~11797
    [55] Yeh K. C., Lagarias J. C. Eukaryotic phytochromes: light-regulated serine/threonine protein kinases with histidine kinase ancestry. Proc Natl Acad Sci, 1998, 95:13976~13981
    [56] 章熙民,认泽霈,梅飞鸣.传热学.北京:中国建筑工业出版社,2002,220~242
    [57] 傅秦生,何雅玲,赵小明.热工基础与应用.北京:机械工业出版社,2002,102~128
    [58] Javaid H. Khan. Durability of hals-stabilized polyethylene film in a greenhouse environment. Polymer Degradation and Stability, 1995, 48:137~142
    [59] Dilara P.A. Standard Testing Methods for Mechanical Propertiesand Degradation of Low Density Polyethylene LDPE)Films Used as Greenhouse Covering Materials: a Critical Evaluation, Polymer Testing, 1998, 17:549~585
    [60] 郁峰.聚乙烯永久防雾膜的研制:[硕士学位论文].天津:天津轻工业学院,2001
    [61] 中华人民共和国国家技术监督局.GB/T 16422.1-1996.塑料实验室光源曝露试验方法——第1部分:通则.北京:中国标准出版社,1996-06-14
    [62] 中华人民共和国国家技术监督局.GB/T 16422.2-1999 idt ISO 4892-2 1994.塑料实验室光源曝露试验方法——第2部分:氙弧灯.北京:中国标准出版社,1999-09-16
    [63] 李元哲,吴德让,于竹.日光温室微气候的模拟与试验研究.农业工程学报,1994,10(1):130~136
    [64] 孙忠富,李伯祥,吴毅明.北京地区典型日光温室直射光环境的模拟分析.农业工程学报,1993,9(2):45~52
    [65] 凌坚.连栋温室反射型保温幕的性能研究:[硕士学位论文].北京:中国农业大学,2001
    [66] 中华人民共和国国家技术监督局.GB/T2680-1996.建筑玻璃可见光透射比、太阳光直接透射比、太阳能总透射比、紫外线透射比及有关玻璃参数的测定.北京:中国标准出版社,1994-12-30
    [67] International Organization For Standardization. GB/T 16422.1-1996. Glass in building—Determination of light transmittance, solar direct transmittance, total solar energy transmittance, ultraviolet transmittance and ralted glazing factors. Switzerland: ISO copyright office, 2003-08-15
    
    
    [68] 韦恩R.V,梅杰G.光和植物生长(,肖甫).上海:上海科技出版社,1963,24~32
    [69] 中华人民共和国国家质量监督检验检疫总局.GB/T 8484-2002.建筑外窗保温性能分级及检测方法.北京:中国标准出版社,2002.04.28
    [70] 中华人民共和国国家技术监督局.GB/T 13475-92.建筑构件稳态热传递性质的测定标定和防护热箱法.北京:中国标准出版社,1992-06-04
    [71] 朱林.暖通空调常用数据手册.北京:中国建筑工业出版社,2002,4

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