2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28
Pob tshab polystyrene granules - qhov no yog thawj zaug pom ntawm cov khoom tiav. Thaum raug kub siab ntawm cov roj uas nyob hauv cov pob no, nws pib o. Vim li no, lawv nce li ntawm 10-30 npaug, thaum tsim cov qauv cellular nrog ib leeg.
Kev siv tshuaj
Tam sim ntawd nws yuav tsum raug sau tseg tias qhov sib txawv ntawm qhov sib txawv ntawm cov khoom siv zoo tib yam thiab pob tshab polystyrene yog qhov kev xaiv thib ob yog suav tias yog kev hloov pauv zoo rau plexiglass, vim nws ua haujlwm zoo nrog nws cov haujlwm. Lawm, vim qhov no, cov khoom tau txais qhov loj tshaj tis precisely raws li ib tug hloov rau iav. Nws tseem yog ib qho tseem ceeb uas yuav tsum nco ntsoov ntawm no tias cov tshuaj no yog ib qho kev xaiv pheej yig dua, tab sis tib lub sij hawm nws lub cev thiab tshuaj lom neeg cov khoom tsim nyog siv tsis yog sab nraud xwb, tab sis sab hauv.
Pob tshab hom polystyrene yog ib qho kev hloov zoo heev nyob rau hauv rooj plaub uas yuav tsum tau glazing sab hauv. Tsis tas li ntawd, cov khoom siv raw zoo kawg nkaus xa lub hnub ci, tab sis cov nyhuv ntawm cov rays ncaj qha ntawm cov khoom nws tus kheej ua rau yellowing,cloudiness los yog deterioration ntawm lub zog yam ntxwv.
Ntau yam
Ib yam tshwj xeeb ntawm pob tshab polystyrene yog tias nws tuaj yeem siv nrog zaub mov, uas yog, thaum sib cuag nrog zaub mov, nws yuav tsis poob nws qhov zoo. Translucent versions ntawm cov khoom siv raw no yog qhov zoo rau kev teeb tsa ua cov ntxaij vab tshaus lossis cov qhov rooj da dej, piv txwv li.
Ib yam ntawm cov khoom siv no yog textured polystyrene. Feem ntau siv rau hauv kev tsim cov ceilings, teeb, thiab lwm yam. Lub peculiarity ntawm textured pob tshab polystyrene yog hais tias nws txig scatters lub teeb, uas yog reflected los ntawm ib tug loj tus naj npawb ntawm lub ntsej muag, thiab muaj peev xwm sparkle.
Tseem muaj polystyrene, uas yog hu ua anti-reflective. Xws li cov khoom muaj ib qho kev kho mob ib leeg uas yuav tiv thaiv qhov kev xav ntawm lub teeb ci. Txhawm rau kom tsis txhob muaj kev puas tsuaj rau cov ntawv pob tshab polystyrene ntawm txhua hom, nws feem ntau yog npog nrog cov yeeb yaj kiab tiv thaiv ntawm ob sab.
Tshuaj thiab lub cev khoom ntawm polystyrene
Nws tsim nyog pib nrog qhov tseeb tias cov khoom siv no yog tus cwj pwm los ntawm qhov qis qis ntawm kev nqus dej, nrog rau qhov ntsuas qis ntawm kev tiv thaiv hluav taws xob hluav taws xob. Tsis tas li ntawd, cov yam ntxwv hauv qab no tuaj yeem paub qhov txawv:
- cov khoom siv siab ceev;
- vapor nruj;
- Polystyrene kev khiav hauj lwm kub ntawm -40 txog +75 degrees Celsius;
- tshav kub muaj peev xwm thiabthermal conductivity;
- ib coefficient zoo ntawm xws li qhov taw qhia raws li thermal expansion.
hluav taws kub nyhiab
Cais, nws tsim nyog hais txog qhov zoo li hluav taws kub. Pob tshab polystyrene 2 hli, 3 hli, thiab lwm yam yog txawv los ntawm lub fact tias nws belongs rau cov pab pawg neeg ntawm combustible cov ntaub ntawv. Nws yog ib qho tsim nyog ntxiv tias txawm tias ua ke nrog lub pob zeb ua ke, polystyrene tseem khaws cov khoom zoo no. Yog vim li cas rau qhov kev tsis zoo no yog tias cov khoom xyaw muaj cov ntsiab lus carbon siab. Vim li no, cov neeg tua hluav taws feem ntau pom muaj kev txaus siab rau cov qauv uas yog tsim los ntawm cov khoom siv raw. Txawm li cas los xij, muaj ib qho tseem ceeb heev uas yuav tsum paub txog. Txawm tias muaj tseeb hais tias cov khoom yog combustible, nws tsis mus rau cov pab pawg neeg ntawm nws tus kheej-igniting. Pob tshab polystyrene tuaj yeem ntes hluav taws tsuas yog los ntawm kev raug qhib hluav taws.
Raws li cov yam ntxwv ntawm kev ua haujlwm thiab kev ua haujlwm, lawv muaj raws li hauv qab no:
- khoom yog lub teeb thiab yoog raws;
- haum rau ntau yam kev ua haujlwm, txiav, thiab lwm yam.;
- durable;
- zoo tiv thaiv cov kua qaub thiab alkalis;
- xav tias yuav cuam tshuam resistant thiab yooj yim heev.
Material Composition
Polystyrene hauv nws daim ntawv kawg muaj txog li 92% carbon thiab 8% hydrogen. Ib qho me me feem ntau yog nyob los ntawm cov khoom lag luam xws li sulfur, nitrogen thiab oxygen. Ntawm qhov kub thiab txias, polystyrene yog lub iav pob tshab. Elastic ntawm 80 degrees CelsiusCov khoom pib nce, thiab melting tshwm sim thaum rhuab mus rau 239 degrees.
Kev piav qhia ntawm kev cuam tshuam siab polystyrene
Pob tshab siab cuam tshuam polystyrene yog cov ntaub ntawv uas muaj cov yam ntxwv los ntawm kev tiv thaiv txias, ua tiav kev tsis txaus siab rau alkali, thiab nyias. Vim tag nrho cov zoo li no, nws feem ntau siv hauv kev lag luam khoom noj. Txawm li cas los xij, ib txoj hauv kev los yog lwm qhov, cov khoom siv raw no yog siv nyob rau hauv yuav luag txhua qhov chaw ntawm tib neeg kev ua haujlwm vim muaj ntau yam ntawm nws cov khoom. Nyob ntawm txoj kev ua, nws tuaj yeem muab faib ua ntau hom:
- glossy thiab matte;
- smooth thiab embossed;
- pob tshab polystyrene lub teeb diffuser lossis, hloov pauv, cov khoom siv xim.
Ntawm cov txiaj ntsig tseem ceeb, cov ntsiab lus hauv qab no sawv tawm:
- muaj zog thiab tsis muaj dej;
- muaj cov khoom ntawm dielectrics;
- yog tias nws nyob hauv daim ntawv, nws tsis tso cov tshuaj phem rau tib neeg;
- teeb machining;
- siab te tsis kam;
- khoom melts yooj yim heev.
Ntawm qhov tsis txaus ntawm daim ntawv cuam tshuam tus neeg sawv cev yog nws cov nplaim taws, nrog rau kev solubility hauv feem ntau cov tebchaw raws li cov tshuaj tsw qab hydrocarbons.
Lub teeb-diffusing thiab extruded polystyrene
Lub teeb-diffusing polystyrene zoo ib yam li acrylic iav. Cov khoom siv raw yog suav tias yog nkig heev thiab muaj me ntsisceev. Tab sis tib lub sijhawm, qhov ntau ntawm nws siv yog qhov dav heev.
Ntawm qhov zoo ntawm cov khoom yog siab tiv thaiv kom ya raws, uas yog vim li cas nws cov kev pab cuam lub neej yog ntev heev. Qhov saum npoo yog du thiab muaj lub siab pob tshab, ua tsaug uas nws tau ua tiav siv los ua ib qho pheej yig hloov rau plexiglass. Ntawm qhov pom kev tsis txaus, tsis yog qhov tsis muaj zog nkaus xwb, tab sis kuj tsis tshua muaj kev tiv thaiv rau ultraviolet rays thiab lawv cov teebmeem.
Txhawm rau kom tau txais extruded los yog, raws li nws tseem hu ua, foamed polystyrene, nws yog ib qho tsim nyog yuav tsum tau ua kom sov cov khoom siv nrog ntxiv ntawm tus neeg sawv cev foaming thiab ces extrude nws nyob rau hauv daim ntawv los yog yob cov ntaub ntawv. Kev nthuav dav polystyrene yog siv dav hauv kev tsim kho kev lag luam. Nws tau raug siv los ua cov rwb thaiv tsev thoob ntiaj teb rau txog 60 xyoo. Ntawm qhov pom tseeb qhov zoo, kev ntseeg siab, siab tiv thaiv cov tshuaj, ya raws thiab pwm tuaj yeem paub qhov txawv. Tsis tas li ntawd, ntawm tag nrho lwm yam ntawm polystyrene, qhov no yog suav tias yog tus phooj ywg zoo tshaj plaws. Ntawm cov minuses, tsuas yog ib qho sawv tawm - yooj yim flammability, xws li rau lwm hom.
Cov neeg uas siv txhua hom polystyrene tau txaus siab. Cov kev tshuaj xyuas zoo tshaj plaws yog los ntawm cov neeg uas tau teeb tsa cov khoom siv no ua qhov rooj rau cov da dej. Qee tus yws tias thaum huab cua kub heev, thaum raug tshav ntuj, polystyrene pib tsw ntxhiab thiab tig daj.
Pom zoo:
"Euroset", "pob kws" card: yuav ua li cas kom tau. Credit card "pob kws": tej yam kev mob rau tau txais, tariffs thiab xyuas
Kev sib tw tsis tu ncua hauv kev lag luam nyiaj txiag yuam cov koom haum los tsim ntau thiab ntau cov kev pabcuam tshiab uas feem ntau yog teb rau cov neeg siv khoom xav tau thiab txhawb nqa lawv. Qee zaum, nws yuav zoo li, cov koom haum sib txawv uas koom nrog cov dej num sib txawv tuaj ua ke rau kev sib koom tes muaj txiaj ntsig. Ib qho piv txwv ntawm kev ua tiav zoo li no yog daim npav "Korn" ("Euroset")
Pob kos valve: piav qhia, specifications, ntaus ntawv thiab tshuaj xyuas
Tus tsim cov kav dej cia siab tias dej lossis lwm yam khoom yuav txav mus rau hauv ib qho kev taw qhia. Tab sis kev xyaum qhia tau hais tias muaj kev zam. Txhawm rau kom tsis txhob muaj xwm txheej kub ntxhov, yog tias qhov ntws mus rau lwm txoj hauv kev, lub pob valve lossis ib qho ntawm nws cov ntau yam yog siv rau hauv cov kav dej - lub pob valve
Emery pob zeb: tshuaj xyuas, nta, hom, cim thiab tshuaj xyuas
Ntau lub tsev craftsmen muaj lub tshuab hluav taws xob, uas yog nrov hu ua "emery". Nws yuav tsum tau emery pob zeb (lub voj voog). Ntawm lub tshuab no, koj tuaj yeem ua kom zoo rau tus kheej qhov chaw lossis zom txhua yam khoom, cov cuab yeej. Cov cuab yeej zoo li no yooj yim kom muaj ntawm tes yog tias yuav tsum kho. Ib lub pob zeb emery yuav yog qhov tseem ceeb rau cov riam ntse
Pob tshab txhuas yuav hloov cov iav armored
Aluminium oxynitride (los yog AlON) yog cov ceramic uas muaj txhuas, oxygen thiab nitrogen. Cov khoom yog optically pob tshab (> 80%) nyob rau hauv lub ultraviolet, pom thiab ib nrab-yoj ntau yam ntawm cov electromagnetic spectrum. Nws yog tsim tawm txawv teb chaws los ntawm Surmet Corporation raws li ALON hom. Tsis ntev los no, cov kws tshawb fawb Lavxias tau tsim lawv tus kheej thev naus laus zis los tsim cov pob tshab txhuas, uas txawv me ntsis ntawm cov analogues txawv teb chaws
Qhov ntom ntawm cov pob zeb crushed - gravel, granite, limestone thiab slag. Qhov ntom ntom ntawm cov pob zeb crushed: coefficient, GOST thiab txhais
Crushed pob zeb yog cov khoom uas tsis muaj dej, tsis muaj dej thiab granular tau los ntawm kev sib tsoo. Nws muab faib ua thawj thiab theem nrab. Qhov no yog qhov tseeb tseem ceeb. Thawj - qhov tshwm sim ntawm kev ua cov pob zeb ntuj: pebbles, pob zeb, pumice thiab lwm yam ntaub ntawv. Secondary yog tau los ntawm crushing siv pov tseg, xws li pob zeb, asph alt, cib. Nyob rau hauv cov ntawv no, peb yuav txiav txim siab nyob rau hauv ntau yam zoo xws li cov cuab yeej raws li qhov ceev ntawm crushed pob zeb
