1. Sib dua

Yas yog ib yam khoom siv sib dua nrog qhov ceev ntawm 0.90-2.2. Nws yog qhov tseeb tias, cov yas puas tuaj yeem ntab saum dej? Tshwj xeeb tshaj yog cov yas ua npuas dej, vim yog cov micropores sab hauv, cov qauv sib dua, thiab qhov ceev ntawm tsuas yog 0.01. Qhov no tso cai rau cov yas siv rau hauv kev tsim cov khoom uas xav tau qhov hnyav sib dua.

2. Kev ruaj khov tshuaj zoo heev

Feem ntau cov yas muaj kev tiv thaiv xeb zoo rau cov tshuaj xws li cov kua qaub thiab alkalis. Tshwj xeeb, polytetrafluoroethylene (F4), feem ntau hu ua Vaj Ntxwv ntawm Plastics, muaj kev ruaj khov tshuaj ntau dua li kub, thiab nws yuav tsis lwj txawm tias nws raug rhaub hauv "aqua regia" ntau tshaj kaum teev. Vim tias F4 muaj kev ruaj khov tshuaj zoo heev, nws yog cov khoom siv tiv thaiv xeb zoo tagnrho. Piv txwv li, F4 tuaj yeem siv ua cov khoom siv rau kev xa cov kav dej corrosive thiab viscous.

3. Cov khoom siv hluav taws xob zoo heev

Cov yas ib txwm yog cov neeg ua hluav taws xob tsis zoo, thiab lawv qhov tsis kam ntawm qhov chaw thiab qhov ntim tsis kam loj heev, uas tuaj yeem ncav cuag 109 txog 1018 ohms hauv tus lej. Lub zog tawg yog loj, thiab tus nqi dielectric poob tangent yog me me. Yog li ntawd, cov yas muaj ntau yam kev siv hauv kev lag luam hluav taws xob thiab kev lag luam tshuab. Xws li cov yas rwb thaiv tsev tswj cov xov hlau.

4. Tus neeg ua haujlwm thermal tsis zoo, nrog rau kev txo suab nrov thiab kev nqus dej poob siab

Feem ntau hais lus, qhov thermal conductivity ntawm yas yog qhov tsawg, sib npaug rau 1/75-1/225 ntawm cov hlau, thiab cov micropores ntawm cov yas ua npuas ncauj.

Nws muaj roj, uas muaj kev rwb thaiv cua sov zoo dua, kev rwb thaiv suab thiab kev tiv thaiv kev poob siab. Piv txwv li, qhov thermal conductivity ntawm polyvinyl chloride (PVC) tsuas yog 1/357 ntawm hlau thiab 1/1250 ntawm txhuas. Hais txog lub peev xwm rwb thaiv cua sov, cov qhov rai yas ib-iav yog 40% siab dua li cov qhov rai txhuas ib-iav, thiab cov qhov rai ob-iav yog 50% siab dua. Tom qab lub qhov rai yas ua ke nrog cov iav khoob, nws tuaj yeem siv rau hauv cov tsev nyob, cov chaw ua haujlwm, cov chav kawm, thiab cov tsev so, txuag cua sov thaum lub caij ntuj no thiab txuag cov nqi cua txias thaum lub caij ntuj sov, thiab cov txiaj ntsig yog qhov pom tseeb heev.

5. Kev faib dav dav ntawm lub zog kho tshuab thiab lub zog tshwj xeeb siab dua

Qee cov yas tawv npaum li pob zeb thiab hlau, thiab qee qhov mos npaum li ntawv thiab tawv. Los ntawm qhov pom ntawm cov khoom siv kho tshuab xws li qhov nyuaj, lub zog tensile, elongation, thiab lub zog cuam tshuam ntawm cov yas, lawv muaj ntau yam kev faib tawm thiab muaj ntau txoj kev xaiv rau kev siv. Vim yog qhov hnyav tshwj xeeb me me thiab lub zog siab ntawm cov yas, nws muaj lub zog tshwj xeeb siab. Piv nrog rau lwm cov ntaub ntawv, cov yas kuj muaj qhov tsis zoo pom tseeb, xws li kev kub hnyiab, kev tawv dua li cov hlau, kev tiv thaiv kev laus tsis zoo, thiab kev tiv thaiv kub.

Yog li ntawd, peb cov khoom yas siv cov khoom yas raws li qhov xwm txheej ntawm cov khoom
Piv txwv li:diavcov khoom lag luam yog cov khoom noj khoom haus PP thiab cov khoom siv kho mob PP.
Lubkoob txhaj tshuajyog qib kho mob PP, thiablub raj kuajmuaj qib kho mob PP lossis PS.lub raj mis tsuagyog qhov sib xyaw ua ke ntawm PET thiab PP.

Vim tiaslub pwmCov ntaub ntawv peb siv yog cov hlau pwm zoo heev, xws li 718. Qhov zoo ntawm cov khoom yas ua tau zoo heev. Peb muaj 13 xyoo ntawm keeb kwm kev paub hauv thaj chaw no, kev tshaj lij heev