Dab tsi yog cov yam ntxwv ntawm thermal zog ntawm fiberglass? Dab tsi yog nws cov ntawv thov thiab cov txheej txheem tseem ceeb?

Core Thermal Performance Yam ntxwv

 

1. Zoo heev thermal rwb thaiv tsev (Low Thermal Conductivity)

 

Fiberglass muaj thermal conductivity tsawg heev. Ntawm chav tsev kub (kwv yees li 25 degree), nws cov thermal conductivity yog li 0.027 W / (m·K).

Tus nqi no tsawg dua li cov khoom siv hlau feem ntau (piv txwv li, steel kwv yees li 50 W / (m·K), aluminium kwv yees li 237 W / (m·K)), thiab kuj tseem qis dua ntau cov khoom siv hauv tsev thiab cov khoom siv (piv txwv li, pob zeb kwv yees li 1.7 W / (m·K), ntoo kwv yees li 0.1-0.2 W / (m·K)).

 

Qhov no tsis tshua muaj thermal conductivity txhais tau hais tias iav fiber ntau cuam tshuam cov cua sov hloov mus, ua rau nws ua tau zoo - cov khoom siv thermal rwb thaiv tsev.

 

Temperature Effect: Raws li ambient kub nce, thermal conductivity ntawm iav fiber ntau nce me ntsis, tab sis nws cov yam ntxwv uas tsis tshua muaj thermal conductivity yog khaws cia nyob rau hauv ntau qhov kub thiab txias, ua rau nws haum rau thermal rwb thaiv tsev nyob rau hauv nruab nrab mus rau qhov kub kub.

 

2. Zoo heev High -Tsub Resistance thiab Non{2}}combustibility

 

Muab piv rau cov organic fibers (xws li paj rwb, ntaub plaub, polyester, nylon, aramid, thiab lwm yam), iav fiber ntau ua rau muaj kev kub ntxhov heev.

 

Nws softening kub yog siab li 550℃- 750℃. Qhov no txhais tau hais tias hauv qab no qhov kub thiab txias ntau yam, iav fiber ntau tswj lub zog txaus thiab morphological stability yam tsis muaj softening lossis deforming.

 

Qhov txiaj ntsig tseem ceeb: Tsis yog -combustible. Cov iav fiber ntau yog cov khoom siv tsis muaj roj silicate uas tsis kub hnyiab ntawm qhov kub thiab tsis tso pa tawm. Cov yam ntxwv no ua rau nws zoo tagnrho rau cov ntawv thov kev nyab xeeb hluav taws (xws li rwb thaiv tsev tiv thaiv hluav taws hauv cov tsev, cov pam hluav taws kub, cov ntaub thaiv hluav taws, thiab siab -kub yeeb nkab cladding).

 

3. Thermal Shrinkage thiab nws cuam tshuam rau cov khoom sib xyaw

 

Txawm hais tias txhua yam khoom ntawm iav fiber nws tus kheej tsis hloov pauv loj heev thaum rhuab mus rau qhov kub thiab txias qis dua nws qhov muag muag, thermal shrinkage tshwm sim.

 

Associative Risks nyob rau hauv Composite Materials: Qhov kev coj tus cwj pwm thermal shrinkage no tseem ceeb heev rau cov resin-raws li composites (fiberglass) reinforced iav fiber. Yog tias qhov sib txuas ntawm cov iav fiber ntau thiab cov resin matrix tsis zoo (piv txwv li, xaiv tus neeg sawv cev ntub dej tsis tsim nyog lossis cov txheej txheem tsis sib xws uas ua rau tsis zoo sib txuas), thaum rov ua cua sov thiab cua txias (thermal cycling) ntawm cov khoom:

 

· Cov fiber ntau thiab resin yuav deform txawv vim qhov sib txawv ntawm lawv coefficients ntawm thermal expansion/contraction.

 

· Lub interface tsis zoo tsis tuaj yeem hloov kev ntxhov siab lossis kev sib koom ua ke deformation.

 

· Qhov no thaum kawg yuav ua rau kev sib cuam tshuam ntawm kev sib cais (kev sib cais) ntawm fiber ntau thiab cov resin matrix.

 

· Cov txiaj ntsig: Interfacial debonding ua rau tsis muaj zog ntawm kev ncaj ncees ntawm cov khoom sib xyaw, dhau los ua qhov kev ntxhov siab thiab qhov pib tawg, ua rau muaj qhov txo qis hauv cov khoom siv zog (tshwj xeeb tshaj yog interlaminar shear zog thiab qaug zog), cuam tshuam rau nws lub sijhawm ntev - kev cia siab thiab kav ntev.

 

 

Daim Ntawv Thov Cheeb Tsam: Kev daws teeb meem rau siab - kub thiab thermal rwb thaiv tsev xav tau

 

Raws li cov khoom siv thermal tshwj xeeb saum toj no, iav fiber ntau tau siv dav hauv:

 

• Lub tsev thermal rwb thaiv tsev: iav ntaub plaub, rwb thaiv tsev xav tau / board, siv rau phab ntsa, ru tsev, thiab cov yeeb nkab rwb thaiv tsev, txuag hluav taws xob thiab txo kev noj.

 

• Industrial High-Tsub Rwb thaiv tsev: rwb thaiv tsev txheej rau siab-kub kilns, pipelines, thiab khoom; thermal rwb thaiv tsev system; txuag zog.

 

• Kev Nyab Xeeb Hluav Taws Xob: Cov khoom siv hluav taws kub hauv qhov rooj, cov khoom siv hluav taws xob, cov khoom siv hluav taws xob, cov pam hluav taws kub, cov txheej rwb thaiv tsev rau cov hluav taws kub hnyiab, cov ntaub thaiv hluav taws kub.

 

• Aerospace thiab Kev Thauj Mus Los: Cov rwb thaiv tsev thermal, suab rwb thaiv tsev, thiab cov khoom siv hluav taws xob tiv thaiv rau lub dav hlau, nkoj, thiab siab - tsheb ciav hlau ceev.

 

• Cov Khoom Siv Hauv Tsev: Cov khoom siv rwb thaiv tsev thermal rau siab - cov khoom siv kub xws li qhov cub, grills, thiab tshuab ziab khaub ncaws.

 

Cov ntsiab lus

 

Fiberglass, nrog nws tsis tshua muaj thermal conductivity (zoo rwb thaiv tsev), ultra- kub softening, thiab tsis yog -combustibility (zoo heev - kub tsis kam thiab hluav taws kev nyab xeeb), tau tsim nws cov tub ntxhais txoj hauj lwm nyob rau hauv siab - kub rwb thaiv tsev thiab tiv thaiv hluav taws. Txawm li cas los xij, nws cov khoom siv thermal shrinkage kuj tseem ceeb rau peb tias kev ua kom muaj kev sib raug zoo ntawm cov fiber ntau thiab cov resin yog qhov tseem ceeb hauv kev siv cov khoom siv sib xyaw (tshwj xeeb tshaj yog cov uas xav tau thermal cycling). Txhim kho qhov kev sib txuas los ntawm kev ua kom zoo tshaj qhov kev sib txuas ntawm tus neeg sawv cev (tshwj xeeb tshaj yog coupling agents) thiab kev tswj cov txheej txheem yog qhov tseem ceeb rau kev ua kom muaj zog ntawm cov iav fiber ntau thiab ua kom lub sijhawm ntev -kev ua haujlwm ruaj khov ntawm cov ntaub ntawv sib xyaw hauv cov cua sov.