Yog dab tsi yog cov chaw sib txuas tseem ceeb los txheeb xyuas cov thermal break strips uas tsim nyob rau hauv PA66?

PA66 thermal break strips yog qhov tseemceeb rau kev siv kho rau tsev thiab dej nkag mus li, thiab lawv kev ua tauj yuav tshwm sim rau kev siv kho tsev thiab kev nyob zoo. Txhawm rau xyuas PA66 strips, peb paub tias yuav tsum tswj ntau rau cov ntaub ntawv tseemceeb (KPIs) uas sau qhia txog kev sib thaj, kev ua haujlwm, thiab kev nyob ntev. Los ntawm peb kev pab ib tsoom—muab pa66 khoom siv los ntawm twin-screw granulated, khoom siv los extrusion single-screw, thiab kev pab tshuaj lwm—peb pab cov neeg siv khoom tau KPIs no thiab tshaj tshuaj, kom pa66 thermal break strips muaj kev nyob siab thiab zoo.

Kev Tiv Thaiv Khoob: Cov KPI Tseemceeb Rau Kev Tiv Thaiv Khoob

Thermal Conductivity

Kev sib txuas thiab tshaj tawm kev ceev yog KPI tseem ceeb tshaj plaws rau pa66 thermal break strips, vim nws sau ceev txog qhov chaw siv khoom los tshaj tawm kev ceev. Pa66 strips muaj txiaj ntsig zoo yuav tsum muaj kev sib txuas thiab tshaj tawm kev ceev ntawm ≤0.3 W/(m·K)—txhua qhov tshwm sim uas zoo tshaj qhov no yuav tsim kev tshaj tawm kev ceev rau hauv aluminum frames. Peb cov pa66 granules, uas tau tsim los ntawm twin-screw extruders, tau pom qhov sib txuas thiab tshaj tawm kev ceev tsis zoo los ntawm kev siv kev sib kis zoo ntawm glass fiber. Cov twin screws yog sib kis kom faus cov glass fibers (25-30% zawv zwb) rau hauv pa66 matrix, tsim cov network structure uas txo qhov tshwm kev tshaj tawm kev ceev. Thaum cov granules no tau raug siv los tsim strips los ntawm peb cov single-screw extruders (qhov chaw tsim pa66 strip tsom loj), cov fiber network nyob ib si, txhawj xeeb tias kev sib txuas thiab tshaj tawm kev ceev zoo ib yam rau txhua strip. Peb test txhua qhov pa66 strips los ntawm kev siv heat flow meter, txhawj xeeb tias lawv pab tau KPI no ua vor delivery.

Nyherem Sib Txuas Txheej Xwm (HDT)

PA66 thermal break strips nyob ze tiam kub (xws li khlau taj yag rau ntawm tsev nruab tsev) nyob hauv kev siv, yog li tiam kub distortion temperature (HDT) yog ib qhov kev caij no tsis tuaj yeem txwv los. Lub HDT ntawm pa66 strips yuav tsum muaj ≥220°C nyob ze kev load 1.82MPa—feem no kho kom pa66 tsis tas nqus lossis rov koog hauv tiam kub. Peb lub xeem R&D zoo nkauj PA66 cov cuab yeej los ntxiv cov cuab yeej khib tiam kub, uas pab nce HDT los li 15-20% dhau hmo pa66. Qhov kev pib twin-screw granulation kho kom cov cuab yeej khib tiam kub raug nrawv mus rau hauv pa66, tiv thaiv kev puav tso oblossis chaw nrawv. Nyob hauv qhov kev pib single-screw extrusion, peb tswj lub die temperature nyob rau 235-240°C kom pa66 muaj tus cwj pwm, kom zoo siab dua. Rau cov neeg siv khoom, qhov no txhais tau tias pa66 strips yuav ruaj khov thiab tsis poob tseem ceeb nyob ze tiam kub tshaj tawm.

Tus nqi siv zog: Kho kom meej thiab nyob

Tensile zog

PA66 thermal break strips yuav tsum nyob zoo rau kev siv thiab kev nres nqa, yog li ntawd tensile strength yog ib qhov KPI tsis tuaj yeem khaws cia. Qhov tsawg kawg tensile strength rau PA66 strips meej meej yog 80MPa—cov strips uas nyuaj dua yuav ruaj khi rau hauv kev sib txig nrog aluminum profile, ua rau muaj kev xeeb xyuas. Cov twin-screw granulated pa66 yog qhov chaw tsoom tshuab ntawm qhov siab no: qhov kev tshem tshem ntawm cov twin screws faib cov glass fibers txaus siab, tsim cov structure uas tso tawm kev tiv thaiv tivev rau kev tig nqes. Thaum roj huam sib luag los ntawm peb lub single-screw extruders (calibrated rau pa66’s viscosity), cov strips nyob zoo rau kev tso fiber tau zoo, txwv qhov tensile strength ntawm 82-85MPa. Peb siv universal testing machines los kuaj qhov tensile strength rau txhua qhov tsav tsheb, kom meej meej tias tsis muaj pa66 strip dab tsi hlo li peb lub standard. Txhawm rau rau peb lub service ib leeg, peb kuj muab cov ntaub ntawv kuaj mob rau cov neeg sau khoom, kom meej meej tias cov strips muaj kev tiv thaiv zoo.

Flexural modulus

Kev cim tshaj tawg ntawm pa66 txheej xyuas qhov kev tiv thaiv tib neeg ntxoov—tseem ceeb rau kev tiv thaiv kev ntxoov hauv qhov rooj tog. Qhov sij hawm tshaj tawg (≥4500MPa) nyob siab tias txheej yuav nyob ib ncig, txawm tias nws twj tau rau hauv qhov rooj tog los yog tsis tuaj. Peb pa66 txheej tau txais qhov no los ntawm kev sib xyaw nrog kev tsim kab ntau (uas pab txhim kho kev sib xyaw ntawm kab thiab polymer) thiab kev tso cov kab ntau tsim (uas tiv thaiv kev ruaj ntseg). Qhov sij hawm tshaj tawg ntawm peb pa66 txheej yog 4600-4800MPa, uas loj dua qhov tshwm sim tshwj tsis txaus 4200MPa. Qhov ruaj ntseg no tiv thaiv txheej kom tsis txawv ntxoov nyob rau hauv qhov rooj los yog kev ntxoov ntawm dej thiab dej, txhim kho qhov chaw nyob thiab qhov chaw kum dej.

Kev Nyob Tsi Muaj Chaw: Tiv Thaiv Kev Siv Thiab Kev Pab

Zoo Ntawm Kev Dub Dej

PA66 haus tshuaj sib txuas, uas tsim tau kev hlo li cas los—ntaub ntau lossis ncav ncav tuaj yeem tshav qhov chaw nyiag ntawm qhov ntau lossis aluminum. Qhov taub tshuaj haus tshuaj sib txuas ntawm pa66 thermal break strips yuav tsum muaj ≤1.0% tom qab 24 teev nyob rau hauv dej—qhov taub dua no yuav cuam tshuam mus rau kev nyiag. Peb cov pa66 granules tau txiav kab ua vor (moisture content ≤0.1%) ua vor khi kom raug extrusion los ntawm single-screw, kom thauj dej haus tshuaj sib txuas. Peb kuj ntxig tso cov khoom siv hydrophobic txaus siab hauv twin-screw granulation, kom thauj dej haus tshuaj sib txuas mus txog 0.8-0.9%. Rau cov neeg siv khoom nyob rau qhov chaw muaj dej (xws li qhov chaw nyob ze vaj hu thiab dej), qhov KPI no yog tseem ceeb: nws txhawis kom pa66 strips tsis txhob ntau thiab tshav qhov chaw khib insulation barrier ntawm qhov rooj tsis zoo, tshwj tsis tas nyob rau qhov chaw muaj dej ntau.

Molding Shrinkage Rate

Txoj kev lag luam ntawm kev ntxuav tso pov hauv pa66 muab kom zoo nkag rau cov kab ntse ntse. Yog tias lub laj kab ntxuav tso pov hauv tsuas yog ≤0.6% yuav pab kom kab pa66 muaj qhov sib xws nrog qhov kho, thiab txhob muaj qhov kos. Peb muab peb lub extruder siv ib feem los kho rau pa66: peb tswj lub siab ntawm kab uas tau ntxuav (siv dej nyob rau 20-25°C) kom ntxuav tso pov hauv me me. Lub granulated pa66 siv ob feem kuj pab—nws muaj lub zog sib npes xws, yog li ntxuav tso pov hauv tsis zoo, ntxuav tso pov hauv nyob rau 0.4-0.5%. Peb siv cov chaw ntsuas sijhawm laser los ntsuas txhua kab hli (10-30mm) thiab lub siab (1.5-3mm), kom meej kom txiav txim siab tias nws raug KPI. Qhov ua lej no pab khwv tus neeg siv khoom los ntawm kev lag luam thiab nqi rau kev lag luam.

UV resistance

PA66 thermal break strips nyob hauv cov pa rooj saum tog zog sib tshooj rwb nrog rays UV, uas tshwm sim los ntawm kev sib xyaw nrog PA66. Tus leej hnub zoo tshaj plaws yog UV resistance—cov strips yuav tsum muaj ≥80% ntawm qhov tensile strength tom qab 1000 teev ntawm kev sib tshooj rwb nrog rys UV. Cov pa66 peev txheej no tau suav nrog UV absorbers thiab hindered amine light stabilizers (HALS), tau ntxiv tib lub sijhawm twj nqus nrog twin-screw granulation kom muaj kev faib txog meej. Peb thiaj sim pa66 strips hauv xenon arc weatherometer (simulating sunlight) kom pom tias KPI no, kom tsoom tias lawv tsis tuaj yeem raug khaum lossis muaj luv luv. Rau cov neeg siv khoom, qhov no txhais tau tias pa66 strips tuaj yeem tsoom kev ua haujlwm dua li 20 xyoo, kom kho kom tsawg tus nqi kho.

Thermal Cycling Resistance

Kev sib xyaw thiab sib po (sib txuas ntxiv kev kuaj kom sov thiab sib tov) tuaj yeem ua rau pa66 cuab tshwj tau, yog li ntawd kev tiv thaiv tias stress no yog ib qhov KPI tseem ceeb. Peb pa66 cuab tshwj dhau 500 zaug kev sib xyaw thiab sib po (-40°C mus rau 80°C) tsis muaj kev pu tsuaj—no sim 10 xyoo kev sib xyaw thiab sib po nyob ze. Qhov chav kawm pa66 zoo li kab roj tso tseg kev sib xyaw thiab sib po, thaum chav kawm pa66 sib sau ua kev tiv thaiv kev sib xyaw thiab sib po. Yog xws li qhov chav pabcuam ib qhov, peb muab cov ntaub ntawv kev sib xyaw thiab sib po rau cov neeg siv khoom, tias pa66 cuab tshwj tuaj yeem tiv thaiv kev sib xyaw thiab sib po.

Kev txheeb xyuas pa66 thermal break strips yuav tsum tawm ntawm cov KPI no—thermal conductivity, tensile strength, dimensional stability, thiab weather resistance. Piv rau 17 xyoo R&D, twin-screw granulation technology, single-screw extrusion expertise, thiab kev pab ntau yam li ib qhov chaw pab, txhua pa66 strip tau dhau kev tsim los ntawm cov standard no. Yuav yog koj yog tus neeg tsim khoom window lossis tus neeg tsim tsev, kev lag luam nrog peb yog kev nkag mus rau pa66 thermal break strips uas muaj kev pab hloov siab, ceev ntxig zog, thiab nyob ntev.