Conductivity ezishisayo of polystyrene, izici ukujiya impahla

I conductivity ezishisayo of polystyrene Foam ingenye izici ezibalulekile unesithakazelo hhayi kuphela ochwepheshe kodwa abathengi abavamile. Lokhu kwaziswa ubizwa nangokuthi ezishisayo ukwahlukanisa Foam futhi okuyinto 98% emoyeni. Yena ababoshwa amaseli polystyrene Foam.

Isakhiwo iphephile ngokuphelele impilo, ngakho impahla isetshenziswa womshini ukudla emabhokisini. He is lula ukusebenza, uye wathola okwandile yayo embonini yezokwakha, futhi Ubuye eziphansi.

Okufanele ukwazi mayelana polystyrene enwetshiwe conductivity ezishisayo

conductivity ezishisayo of polystyrene kuyinto ngempela ongaphakeme, kusukela emoyeni okungukufa impahla ngesisekelo Ubuye kulezi zici. Ngakho-ke, ipharamitha echazwe engayodwa kuhluka 0,037 ukuze 0,043 W / MK, ngokuqondene emoyeni, lesi sici kuyinto 0,027Vt / MK.

polystyrene Expanded ikhiqizwa ngokuvumelana GOST 15588-86 futhi nokongiwa oncomekayo, okwandisa imigomo operation, uyakwazi ukwehlisa Ukushisa izindleko futhi bavikele okokuqandisa. Lezi izindawo ayagcinwa ngisho lapho zihlatshwa okushisa aphansi kanye nomswakama high, Nokho ukusebenzisa polystyrene can ngaphansi isitoreji isikhala, kanye imiklamo ifriji.

I conductivity ezishisayo of polystyrene iphansi, ngakho ukusetshenziswa kwale nto kungaba, hhayi kuphela ngoba yasekhaya kodwa nezalo sekugcineni ngaphandle. Nokho, lesi sici ngeke ifane kuye kwabantu. Ayanda kuba, okuqukethwe styrene ephakeme, i-polystyrene mubi kakhulu ukugcina ukushisa. Ngokwesibonelo, endabeni extruded polystyrene Foam, conductivity yayo ezishisayo kuyoba 0,028Vt / MK, ngoba styrene granules kulokhu kukhona eshidini uhlaka olulodwa, njengoba kungekho therebetween igebe.

Ukuqhathanisa conductivity ezishisayo brand ezahlukene

Ukuze uqhathanise, ungabona imikhiqizo eziningana polystyrene, ukuminyana futhi conductivity ezishisayo abangavumelani nemibono. Ubuningi PSB-C15 lingaphansi kuka-15 kg / m ^3, kuyilapho kumkhawulo conductivity ezishisayo ivela 0.07-0.08 W / MK. Ngokuphathelene sha PSB-C35, ukuminyana yayo ilingana kumkhawulo 25.1 kuya 35 kg / m ^3, kuyilapho conductivity ezishisayo kuyinto 0,038 W / MK. Ukudayiswa kungabonwa kakhudlwana futhi extruded polystyrene Foam. Sha 35 ukuminyana kuhluka 33 kuya 38, kanti conductivity ezishisayo elilingana 0.03.

Uma ngaphambi uphawu 45, ipharamitha kuqala ngeke ifane kusuka 38.1 kuya 45, kanti owesibili ilingana 0,032. conductivity ezishisayo of polystyrene lingaphansi kakhulu uma kuqhathaniswa nale esingokwemvelo isici ukuba ezinye izinto. Ngokwesibonelo, ubumba lanwetshwa at kwabantu of 1200 kg / m ³ has a conductivity ezishisayo elilingana 0.58.

Efanisa conductivity ezishisayo of polystyrene nezinye izinto

Emikhakheni eminingi umkhakha nokwakhiwa enwetshiwe polystyrene esetshenziswa namuhla. I conductivity ezishisayo, ngokufaniswa okuzokwenziwa okukhulunywe ngezansi, kunalokho ongaphakeme kuleli cala. Kodwa eboyeni amaminerali lesi sici kuhluka 0,07 kuya 0.08 W / MK. Njengoba for ukhonkolo, conductivity ezishisayo ke ilingana 1.30, ngenkathi ukhonkolo - 2.04.

aggregate Esilula amagwebu elinesimo conductivity ezishisayo elilingana 0.58 futhi 0,37, ngokulandelana. Thina enwetshiwe polystyrene, ngoba uqhathanise, conductivity ezishisayo kuyinto 0,028Vt / MK. I conductivity ezishisayo of polystyrene Foam futhi kaningi kuqhathaniswa. Esimweni sokuqala, lesi silinganiso kwaba 0,07, esimweni amapuleti.

Izici eziyinhloko: ukuphepha, soundproofing futhi wumoya izici

polystyrene Expanded iphephile, futhi ungasebenzisa futhi. Ngesikhathi esifanayo imvelo uyoveza kwekhabhoni zero. Ngokusho ucwaningo, e takhiwo polystyrene, styrene ayitholakali yingozi. Ngokuqondene soundproofing kanye somoya, bese usebenzisa i-Styrofoam akudingekile ukusebenzisa izinto ezengeziwe ezithuthukisa umsebenzi wumoya futhi soundproofing.

Uma ikhono umsindo-iyavuleka kumele kuciniswe, ukushuba we ungqimba impahla kumele kwenyuke. I conductivity ezishisayo of XPS kakade, kodwa lokhu - akulona kuphela sici, esingekho kuwo kufanele wazi ngaphambi kokuthenga leyo nto. Ngokwesibonelo, polystyrene akuyona hygroscopic, Ngakho-ke, lokho akusho amunce amanzi abese umswakama, akusho sikhukhumale akusho deform, futhi akusho chaza ketshezi. Lapho ibekwe emanzini enwetshiwe polystyrene, kuyoba zingene ngaphakathi isakhiwo, 3% kuphela abantu ipuleti isisindo, kuyilapho izindawo elinama zihlala zinjalo.

Isitimu amanzi kulula sasivumela ukuba uphume styrofoam, ngakho ukunakekelwa kufanele kuthathwe ukuvimbela ukwakheka ukufingqa. Ukuze wenze lokhu, imithetho design ayahlonishwa. Umswakama ukumelana polystyrene ivumela ukuyisebenzisa ukwahlukanisa kwesisekelo, lapho contact ngenakugwemeka indaba phansi.

izici engeziwe: inertness begazi futhi amakhemikhali

Izinto zokuvala umoya Foam ibhodi, okwakubekelwa eshiwo ngenhla conductivity ezishisayo, uqinile ukuze zamakhemikhali izici zokwakheka komuntu. Izakhiwo impahla izogcina, ngisho noma isakhiwo yayo ziyokhinyabezeka:

• isixazululo insipho;
• acid;
• usawoti izixazululo ngohlobo amanzi olwandle;
• ejenti amakhorali;
• ammonia;
• Gypsum;
• amanzi-encibilikayo udayi;
• izixazululo ingcina;
• lime;
• usimende.

Ngokuqondene acid ke e polystyrene enwetshiwe akufanele ehlaselwe nitric acid kanye kanzulu acetic acid. Phakathi ukufakwa kufanele ukuvimbela ukufinyelela namagundane impahla nomuhlwa, ngoba kungabangela ukulimala isakhiwo. Ngaphansi kwethonya izixazululo ukhonkolo kungenzeka kancane iba yingxenye yomhlabathi esikufundayo njengokungathi ezichayeka kumakhemikhali awuketshezi organic. Ukuzinza kungacacisa ukuthi isilinganiso ikhule ezimbotsheni ovulekile futhi avaliwe, kuye ngokuthi umkhiqizo futhi uhlobo ukwahlukanisa.

Fire-polystyrene

Coefficient conductivity ezishisayo of polystyrene enwetshiwe iye ngenhla kodwa kubalulekile ukwazi okwengeziwe umlilo ingozi ezibonakalayo ezivuthayo, kodwa okuhle ukumelana umlilo, ngoba izinga lokushisa okuzenzakalelayo ukuthungela kuyinto 4910 ° C. Uma ukuqhathanisa lokhu inkomba ne kwezinkuni, kuba izikhathi 1.8 ephakeme, ngoba ukhuni luyoba olwanele 2600 kuphela ° C.

Flammability futhi ikhono lokusungula ukushisa

Uma umlilo uzothatha isikhathi esilingana 4 imizuzwana, okokusebenza self-damped. Ngo inqubo amandla omlilo ezokwenzela ukushisa ukwahlukanisa emqulwini ka 1000 MJ / m ^3, ngokuphathelene ugodo, lesi sibalo zokhahlamba kusuka 7000 kuya 8000 MJ / m ^3, lokhu kubonisa ukuthi izinga lokushisa kungaba ephansi kakhulu ngesikhathi omlilo polystyrene. Lithengiswa namhlanje zingatholakala polystyrene self-zokucisha esinwebiwe, okuyinto kuveza ne ukwengeza ilangabi retardants. Kodwa ngokuhamba kwesikhathi, umphumela elahlekile, futhi indaba kungokwalabo iqembu combustibility T2 lizotholakala babelwe Class-T4.

I ukushuba we polystyrene

polystyrene Expanded, conductivity ezishisayo, ugqinsi okufanele uziqaphele uma uhlela ukuthenga lokhu ukwahlukanisa kuveza namuhla abakhiqizi ezahlukene. Ishidi kungenziwa kulinganiselwe ukujiya ku uhla kusuka 20 mm kuya ku-20 cm. Nokho, abathengi abaningi ukubuza mayelana nokuthi iziphi izinhlelo ishidi kungcono ukukhetha. Ukuze ubone ukuthi lesi silinganiso, udinga ukucela, uyini ukumelana ukudluliswa ukushisa. Lapha konke kuzoncika emazweni amaphakathi nezwe. Ngokwesibonelo, phakathi edolobheni laseMoscow ngo ukumelana odongeni kufanele alingane 4.15 m ² ° C / W, ngokuphathelene ezifundazweni eziseningizimu, kuyoba okwanele 2.8 ^m2 ° C / Watt.