固沙保水復(fù)合材料的研究與改良荒漠化土地的應(yīng)用.pdf

1、武漢理工大學(xué)碩士學(xué)位論文固沙保水復(fù)合材料的研究與改良荒漠化土地的應(yīng)用姓名：劉潔申請學(xué)位級別：碩士專業(yè)：材料學(xué)指導(dǎo)教師：王勇20070401武漢理工大學(xué)碩士學(xué)位論文AbstractInthispaperpolyurethanewa5preparedasahighpolymercakingagenttocombinesuperabsorbentresin(s㈣andhighmolecularslowreleasefertilizertoge

2、thertoimprovesandbindingandpreservemoistureandfertilityn地mircostruturesofthepolyurethanefoam(PUF)materialandthecompoundmaterialswerecharacterized磚SEMTheresultsshowthatSARandthefertilizerarcwellproportionedliedinthePUFfoa

3、mExperimentswerecarriedouttoinvestigatethewaterabsorptionandretentionandthenitrogenreleaserateofthiscompoundmaterialMoreovertotestthepracticabilityofthismulti—functioncomplexmaterial，wecarryouttheexperimentinthesandclayt

4、oplantalfalfa，ObservedandstudiedtheeffectsofthiscompoundmaterialOiltheseedsgerminationpercentageplantgrownconditionandthesoilaggregateTheresultsindicatedthatthiscompoundmaterialhashighefficiencyofwaterabsorbingaswellasth

5、eSARandthewaterretentionCanreached45％～56％Inthemeantime，thenitrogenousfertilizerCallreleaseslowlyAfterappliedinalfalfaplankthismultifunctioncomplexmaterialcansavewaterresistdrought，releasefertilizerslowlyaugmentthenumbera

6、ndthewei曲tofseedsincreasetheoutputandenhancetheutilizationofrainfallItsproductivitycomparedtothepuresandysoilcultivationoutputhasenhancedThiscompoundmaterialCanalsoalhallceagglomeratequantityofthesoilbetween025～10mmtaise

7、waterstoragecapacityandwaterretentionabilityThisresearchhasanimportantroleinpreservingmoistureandfertilityofthedesertificationlandsoil，sandbindingandsandwindproofTheSARofthecarboxymethylcellulosegraftingacrylicacid(CMC—A

8、A)wascopolymersynthesiyedusingthemethodofinversephasesuspensionpolymerizationTheinfluencesofthemonomerconcentrationneutralizationdegree，theinitiatordispersionagent，CROSSlinkingagentreactionanddryingtemperatureonthegrafti

9、ngcopolymerpropertieswereexaminedWhenitstawmaterialforexperimentalobtainedthebestresponseconditionWaterabsorbencyofthispolyacrylicacidsaltSARis380andthewaterretentionis408％Anewmethyleneureaslowreleasefertilizerofhi曲moler