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1、實(shí)用文案畢業(yè)設(shè)計(jì)題目:冰箱保溫層設(shè)計(jì)院(系):專(zhuān)業(yè)年級(jí):姓名:xxx學(xué)號(hào):xxx指導(dǎo)教師:xxx年月日摘要文案大全實(shí)用文案硬質(zhì)聚氨酯泡沫塑料廣泛應(yīng)用于建筑，石油、化工、輕工、運(yùn)輔、城市供熱、制冷及食品冷藏與加工：是冰箱，冰柜、飛機(jī)機(jī)身、輪船殼體，客運(yùn)車(chē)箱，活動(dòng)板房等最優(yōu)良的絕熱材料；還常被用做船，浮體、快艇、救撈器材的充填材料以及易碎商品包裝材料；開(kāi)孔型的硬泡是良好的吸音，消聲材料。聚氨酯材料可以用于管道保溫，但是管道保溫材料不僅僅是聚氨酯這一種，也可以是其他的，例如巖棉、珍珠巖等，根據(jù)不同的環(huán)境和需要選擇不同的材料。聚氨酯材料是可以回收再利用的。廢舊
2、聚保溫氨酯材料的再生利用方法有:粘結(jié)制再生泡沫塑料,粉碎后熱壓成制品,粉碎成粉末作為生產(chǎn)泡沫塑料等的填料;通過(guò)醇解、胺解或水解工藝將泡沫分解再生多元醇,再用于制泡沫塑料,等等。硬質(zhì)聚氨酯泡沫塑料因其優(yōu)良的隔熱保溫、獨(dú)特的抗水滲透及化學(xué)穩(wěn)定性，加上輕質(zhì)、成型方便，成為冰箱保溫層不可或缺的保溫材料。針對(duì)冰箱門(mén)體因硬質(zhì)聚氨酯泡沫塑料充型脫模后的變形易產(chǎn)生報(bào)廢返修問(wèn)題，本文擬采用硬質(zhì)聚氨酯泡沫塑料作為原料對(duì)冰箱保溫層進(jìn)行設(shè)計(jì)并通過(guò)實(shí)驗(yàn)的方法驗(yàn)證設(shè)計(jì)方案的可行性，同時(shí)根據(jù)所測(cè)得的數(shù)據(jù)來(lái)確定優(yōu)化方案，總結(jié)出合適的設(shè)計(jì)參數(shù)。關(guān)鍵字：保溫材料；硬質(zhì)聚氨酯泡沫塑料；冰箱
3、保溫層文案大全實(shí)用文案AbstractRigidpolyurethanefoamiswidelyusedintheconstruction,petroleum,chemicalindustry,lightindustry,transportandauxiliary,urbanheating,refrigerationandfoodcoldstorageandprocessing:refrigerator,freezer,thefuselageoftheaircraft,shipshell,passengercarriage,theactivitieso
4、ftheboardandthemostexcellentthermalinsulatingmaterials;butalsooftenusedtotakeaboat,floatingbody,aspeedboat,salvageequipmentfillingmaterialsandfragilecommoditypackagingmaterials;passtherigidfoamisagoodsound-absorbing,sounddeadeningmaterial.Polyurethanematerialcanbeusedinpipeinsul
5、ation,butpipeinsulationmaterialisnotonlypolyurethanethisa,canalsobeother,suchasrockwool,perlite,accordingtothedifferentenvironmentandtheneedtochooseadifferentmaterial.Polyurethanematerialscanberecycled.Wastepolyethyleneinsulationpolyurethanematerialregenerationutilizationmethods
6、include:bindingofregenerativefoam,crushedafterhotpressingproducts,crushedintopowderasfillerintheproductionoffoam;throughalcoholysis,aminesolutionorhydrolysisoffoamdecompositionrecycledpolyolsforfoamplastic,andsoon.Duetoitsexcellentheatinsulationandthermalinsulation,uniquewaterpe
7、netrationresistanceandchemicalstability,therigidpolyurethanefoamplasticisanindispensablethermalinsulationmaterialfortherefrigeratorinsulationlayer.FortherefrigeratordoorbodyduetothedeformationofrigidpolyurethanefoamfillingafterstrippingiseasytoproduceScrap&reworkproblem,thispape
8、rintendstoadoptrigidpolyurethanefoamasarawmater
