Yuav tshawb xyuas txoj hauv kev los tshawb pom qhov nyiaj ntawm cov chaw nres tsheb polyamide thermal break strips hauv qhov chaw no tsuag li cas?

Qhov cuab yeej polyamide thermal break strips muaj feem tseem ceeb ntsoom rau kev tiv thaiv kab ntsug thiab dej no tsis pub chaw tshwm hauv tib siab ntuj nyiag, tab sis uas tsis tu ncua yuav ua rau qhov khoom los yog me me, txhawm rau kom tsis txawv. Qhov thermal break strip uas raug slij lossis phom hauv dej no tsis tu ncua yuav tsis tuaj yeem tiv thaiv kev sib txuam thiab phom qhov system kab ntsug ib leeg. Txhawm rau ib tug neeg tsim khoom thermal break strip uas muaj kev suav nrog R&D xyoo 2006, peb tau tsim kev test zoo tagnrho kom paub tseeb tias cov khoom thermal break strip polyamide tau tsim nyog rau hauv dej no. Los ntawm peb lub tsev khoom pheej zeb—xws li twin-screw granulated materials, single-screw extrusion production, thiab kev pab kuaj xyuas tsev kho mob—peb pab cov neeg siv khoom kuaj xyuas kev tiv thaiv dej no rau cov khoom thermal break strip, kom paub tseeb tias nws yuav nyob ntev.

Yuav vim li cas kev tiv thaiv dej no yuav tsum muaj rau cov thermal break strips

Kev txhawb me me hauv dej no rau Polyamide

Polyamide, zoo li lwm yam plastik tib yam, muaj kev ploj txog hauv uisi ceev—ntawm ib qhov kawg tshaj, nws tsis huv thiab tuaj yeem ploj nyob rau hauv kev ntxig. Rau cov chaw nres tshod sib sau los ntawm uas siv hauv av no tsuag (xws li, uis tseem ceeb txog -40°C), qhov ploj no yog ib qhov nyuaj xwb. Ib lub chaw nres tshod sib sau polyamide tshaub yuav ua haujlwm zoo nyob rau sab ntsuj tshav kub, tab sis yuav ploj thaum muaj ib qhov ntxig me me (xws li, ib daim tshuab nqaj tawm hauv kev siv) nyob rau hauv uis -30°C. Qhov ploj no tsim ib qhov kheej kawm rau kub, tso tseg lub tshod sib sau kom tsis pub kub dhau, thiab yuav tsum tau muab kho kom ntau nqi. Peb 17 xyoo nyiam hauv cheeb tsam pom tias cov chaw nres tshod sib sau uas tsis tuaj saib xyaw nyob rau hauv uis no tsuag muaj feem npua 3 zaug tshaj los ploj hauv hav zoov, yog li qhov kev sim no yog tseem ceeb heev rau tus cwj pwm.

Cov nyuaj xwm nyob rau hauv kev siv thiab siv nyob rau hauv av no tsuag

Qhov thermal break strips tau rau kev phem tshaj plaws hauv qhov chaw no tsis tu ncua. Thaum siv hauv havj kab, cov neeg siv khoom tuaj yeem tsis taub ntxig faus aluminum profiles rau hauv qhov strips, lossis cov khoom siv tuaj yeem nqum rau hauv lawv—cov kev phem uas yuav tsis phim qhov strip nyob hauv uas zog tuaj yeem ua rau muaj qhov ntxiag hauv qhov no tsis tu ncua. Tom qab siv xwm, cov dej thiab av uas hluas los los yog kev hloov pauv kub txias tuaj yeem tshab tau rau qhov strip. Qhov thermal break strip zoo yuav tsum nyob zoo nrog cov kev phem no thiab tsis phim. Peb lub tswvyim siab tshawb nrhiav sim cov kev phem no, kom paub meej tias cov thermal break strips peb tsim (thiab pab nrog peb lub tsev pab ntau yam) tuaj yeem nyob zoo nrog kev phem hauv qhov no tsis tu ncua.

Cov preparations tseem ceeb rau kev sim kev phem hauv qhov no tsis tu ncua

Kev ruaj ntseg hauv qhov no tsis tu ncua ntawm Thermal Break Strips

Kua tshuab sov kom txias, yuav tsum sib ntxiv rau qhov tsawg kub kom muaj kev sib npaug rau hauv noj nyob. Yog tias ua siab ntev ntawm qhov no, yuav tsis tu ncua—yog tias tsis tau txias tag, qhov txaus siab yuav seem zoo dua li nyob hauv kev siv. Peb lub tswvyim tshuaj xyuas yuav tsum nrhiav cov thermal break strips (muab kuaj rau hauv qhov ntsiab lus: 100mm × 20mm, sib npaug rau qhov tsim hauv production ntawm peb lub extruders) rau hauv lub thawv kub. Peb sau kub rau hauv lub thawv ( -20°C, -30°C, lossis -40°C, nyob ntawm qhov chaw uas neeg siv xav tau) thiab tso cov strips nyob rau hauv lub thawv tshaj li 4 teev—vim li no yuav pab kom tag nrho cov strip, tsis yog yog qhov npe, tau txias tag. Nyob rau hauv peb lub tswvyim kev pab, peb muab kev ceev faib rau neeg siv thiab tuaj yeem sib ntxiv cov strips rau hauv peb lub tshuab ua ntej.

Kev xaiv cov ntaub ntawv tshuaj xyuas sib npaug

Yog tias xav kom meej tias cov ntsiab lus ntawm kev sim ua raws li qhov kev tsim los ntawm ib txheej, ces yuav tsum muaj cov ntaub ntawv uas tuaj los ntawm qhov chaw tsim. Peb nug tias hu khoom los ntawm 10-15 lub khoom los ntawm qhov chaw sib txawv hauv qhov chaw tsim thermal break strip (xws li: qhov pib, qhov kauj, thiab qhov thaum kawg ntawm ib txheej) kom pom tau qee yam sib txawv le le ntawm kev tsim. Peb tsim cov thermal break strip nrog single-screw extruders (qhov chaw tsim no yog ib leeg th thôi uas tuaj yeem tsim thermal break strip—twin-screw extruders tsuas yog siv rau granulation), uas pab kom muaj qhov hluav taws xob thiab qhov chaw sib npaug ntawm khoom siv, tab sis hu khoom los ntawm ntau qhov chaw yuav pab ntau dua. Peb kuj siv cov khoom uas tsis muaj qhov puag ncig (lossis tsis muaj qhov chaw yug, ntau kab, lossis dej so ntawv……) vim tias cov no tuaj yeem ua rau muaj zog loj thiab tsis pub tshwm sim qhov kev sim.

Cov kev sim tswj hwm rau kev tiv thaiv nyob hauv qhov chaw no tsuas

Kev sim Charpy nyob hauv qhov no tsuas

Kev test tshaj tshav hluv yog qhov kev pab kom pom zoo tshaj rau kev daws ntau yam tshav tsha, tshav tsha hla siab dua. Nws txiav rau kuaj lub zog tso caij uas yuav tsum tau los hloov ib qhov chaw muaj tshav tsha hauv ib thauj tshav—zog loj dua, txhawv tsha zoo dua. Peb lub tswvyim kuaj siv cov cuab yeej kuaj tshaj tshav hluv thiab raug sib piv rau ISO 179. No yog peb ua li cas kuaj:

• Tshav tshav tsha txhua qhov muaj tshav tsha hauv V (45°), thiab tshav tsha ntev 2mm—no sim qhov chaw tsis zoo leej twg tuaj yeem tshwm nyob hauv kev siv tag nrho.

• Tso cov tshav tsha hauv chaw tsha ntev mus txog thaum peb kuaj (kom tiv thaiv chaw no tsha siab dua).

• Tso lub pendulum ntawm cuab yeej kuaj (muaj ntau zog, feem ntau yog 2J rau cov tshav tsha polyamide) los tshav rau qhov chaw muaj tshav tsha hauv V.

• Ntxiv cov zog uas cov tshav tsha hla—peb cov tshav tsha feem ntau yuav hla ≥1.2J nyob -40°C, zoo dua qhov tseem ceeb tshaj plaws ntawm 0.8J.

Pej xeem kev pab txhawb nqa uas peb muab faib tso rau koj yog training rau koj los siv cov tester Charpy thiab txhais lus ntawm cov ntsiab lus. Peb kuj muab cov ntsiab lus soj ntsuam (rau los ntawm peb cov polyamide twinned-screw granulated, uas muaj kev cim tshwj tsis zoo ntawm cov hmoob hlau kom txo qhov tshav kub) rau koj los calibration koj cov kev soj ntsuam.

Kev Soj Ntsuam Izod Tshav Khib

Rau cov thermal break strips uas muaj cov kab rov tav me me (1.5-2mm dav), cov kev soj ntsuam Izod yooj yim dua—nws txuas cov ntsiab tseem ceeb raws plhaub, ua rau yooj yim dua los soj cov kab rov tav me. Qhov kev ua yog zoo ib yam li Charpy, tab sis cov ntsiab tseem ceeb raug txuas nyob rau ib sab, thiab cov pendulum kuaj xyuas sab laj. Peb siv cov tester Izod nrog 1J pendulum rau cov thermal break strips me. Nyob rau -30°C, peb cov strips dhau ≥0.9J, txhawj xeeb tias lawv tsis breaking nyob rau hauv cov chaw tshav khib. Cov kev soj ntsuam Izod yog tshwj tsis rau cov neeg siv khoom uas tsim cov thermal break strips rau cov khoom siv window me, thiab peb tau muab tias cov kev soj ntsuam no nyob rau hauv peb cov kev pab txhawb nqa txoj hauv duab ib.

Kev Saib Xyuab Thiab Kev Sauv Rau Qhov Chaw Nyob Tom Qab Kev Siv

Tom qab siv kev tso caij rau hauv qhov chaw, peb saib xyuab cov chaw thermal break kom pom tseeb tias puas tsuaj muaj kev phom sij—cov ntawv xaiv yooj yim tsis txhob muaj qhov ntxiag thiab yuav tsum muaj kev nyob ruaj khov. Yog tias ib qhov chaw thermal break breaks ntawm tag, nws yuav tsum los ntawm kev tso caij, vim nws yuav tsis muaj kev nyob ruaj khov hauv kev siv tshaj tawm. Peb kuj saib xyuab cov cuab yeej uas ua los ntawm polyamide thiab glass fibers—peb kev siv twin-screw granulation process tau ua rau muaj kev nyob ruaj khov ntawm fiber-polymer bonding, yog li peb cov chaw thermal break tsis ntau yam li delaminate. Rau cov neeg siv khoom, qhov kev saib xyuab no yog qhov tseem ceeb: txawm tias ib qhov chaw thermal break tuaj yeem dhau kev siv tshaj tawm, tab sis kev saib meej tias muaj kev phom sij yuav tshwm sim kev xav tias muaj kev nyob tsis zoo hauv kev siv ntev. Cov kev pab txhawb peb muaj nyob rau hauv ib qhov chaw muaj cov ntsiab lus saib xyuab meej meej kom pab cov neeg siv khoom sau cov ntsiab lus thiab txiav txim siab zoo rau lawv cov chaw thermal break.

Yog Li Cas Peb Qhov Chaw Tsav Tsheb Pab Tso Caij Rau Hauv Qhov Chaw Ntuj Muag

Twin-Screw Granulation Rau Kev Tso Caij Zoo

Qhov chaw nyob zeem ntawm peb cov thermal break strips' kev tiv thaiv tx against cold impact yog peb cov twin-screw granulated polyamide. Twin-screw extruders sib sau ua ke los muab cov saum npoo roj kom tau raws sib npoo rau hauv qhov polyamide matrix, tsim cov network structure uas yuav dhau perj ntau zog hauv sijhawm uas muaj dej sov. Txawv li single-screw granulation (uas tsim cov saum npoo roj uas muaj tag nrho, uas txav tej kab roj kom nyuaj), peb twin-screw kev tsim khoom yog tias cov saum npoo roj tau muab faus nyob rau hauv 25-30% qhov ntau, tso kev tiv thaiv tx against impact ntau dua 30% dhau hauv qhov polyamide noj tsham. Thaum cov granules no tau raug extruded mus rau hauv cov strips los ntawm peb cov single-screw extruders, qhov fiber network yuav nyob ib si, pab tso kev ua haujlwm zoo tib yam hauv qhov chaw uas muaj dej sov.

Kev Kawm Tag Laim thiab Pab Kev Txhim Kho

Yog tias cov thermal break strips ntawm tus neeg siv khoom tsis tuaj nqus nqi rau kev test cold impact, peb siv peb qhov kev pab txhua yam los nrhiav thiab daws teeb meem. Qee qhov teeb meem feem ntau yog muaj qhov ceev tshaj plua ntawm glass fiber (daws los paub qhov twg yuav tswj hauv qhov twin-screw granulation) lossis kev extrusion tsis zoo ib yam (daws los paub qhov twg yuav tswj hauv qhov temperature lossis speed ntawm single-screw extruder). Peb ua haujlwm nrog tus neeg siv khoom los hloov kho kev tsim khoom thiab rov test cov ntaub tog mus li txog thaum lawv pib dhau qhov standard kev tiv thaiv impact. Qhov kev pab txhua yam no txiav txim tias tus neeg siv khoom tsis yog tsuas yog test lawv cov thermal break strips—peb pab lawv txhim kho.

Kev tsim roj kev nyab xeeb ntawm polyamide thermal break strips hauv qhov chaw uas muaj txias yooj yim tshaj plaws rau kev pab kom khwv muaj zog thiab ua rau neeg siv khwv xav tau. Peb muaj 17 xyoo R&D, kev siv twin-screw granulation technology, kev paub ntau txog single-screw extrusion, thiab kev pab txhua yam uas pab peb los zoo tagnrho rau qhov kev tsim no. Txawm yog tias koj xav sim koj tus thermal break strips lossis txhim kho kev tsim khwv kom txo cov kev nyab xeeb hauv txias, peb muaj cov tools, tej lus paub, thiab kev pab kom koj thermal break strips tuaj yeem ua haujlwm zoo—nyob rau hauv qhov chaw uas txias tshaj plaws.