Cov nplaum ntuj yog cov nplaum uas siv ntau hauv peb lub neej. Raws li ntau qhov chaw sib txawv, nws tuaj yeem muab faib ua cov nplaum tsiaj, cov nplaum zaub thiab cov nplaum pob zeb. Cov nplaum tsiaj suav nrog cov nplaum tawv nqaij, cov nplaum pob txha, shellac, cov nplaum casein, cov nplaum albumin, cov nplaum ntses zais zis, thiab lwm yam.; cov nplaum zaub suav nrog cov hmoov txhuv nplej siab, dextrin, rosin, gum arabic, roj hmab ntuj, thiab lwm yam.; cov nplaum pob zeb suav nrog cov nplaum pob zeb, asphalt tos. Vim nws muaj ntau qhov chaw, tus nqi qis thiab tsis muaj tshuaj lom, nws yog siv dav hauv rooj tog, phau ntawv khi, ntim khoom thiab kev ua tes ua.
cov hmoov txhuv nplej nplaum
Tom qab cov nplaum hmoov txhuv nplej nkag mus rau hauv lub xyoo pua 21st, qhov kev ua tau zoo ntawm ib puag ncig ntawm cov khoom siv yuav dhau los ua qhov tseem ceeb ntawm cov khoom siv tshiab. Hmoov txhuv nplej yog cov khoom tsis muaj tshuaj lom, tsis muaj teeb meem, pheej yig, biodegradable thiab cov khoom siv rov ua dua tshiab uas zoo rau ib puag ncig. Nws yog siv dav hauv ntau yam lag luam. Tshwj xeeb tshaj yog nyob rau xyoo tas los no, lub ntiaj teb cov nplaum kev lag luam tsim khoom siv thev naus laus zis tab tom txhim kho hauv kev txuag hluav taws xob, pheej yig, tsis muaj kev puas tsuaj, viscosity siab thiab tsis muaj kuab tshuaj.
Ua ib yam khoom tiv thaiv ib puag ncig ntsuab, cov nplaum hmoov txhuv nplej siab tau nyiam kev saib xyuas thiab kev saib xyuas zoo hauv kev lag luam nplaum. Raws li daim ntawv thov thiab kev txhim kho cov nplaum hmoov txhuv nplej siab, qhov kev cia siab ntawm cov nplaum hmoov txhuv nplej siab oxidized los ntawm cov hmoov txhuv nplej siab yog qhov zoo, thiab kev tshawb fawb thiab daim ntawv thov yog qhov tseem ceeb tshaj plaws.
Tsis ntev los no, hmoov txhuv nplej siab ua cov nplaum feem ntau yog siv rau hauv ntawv thiab cov khoom lag luam ntawv, xws li kev kaw lub thawv thiab lub thawv ntawv, daim ntawv lo, nplaum lub dav hlau, lo cov ntawv xa ntawv, kev sib txuas ntawm lub hnab ntawv ntau txheej, thiab lwm yam.
Muaj ntau cov nplaum hmoov txhuv nplej siab uas tau qhia hauv qab no:
Cov nplaum oxidized hmoov txhuv nplej siab
Cov gelatinizer uas tau npaj los ntawm kev sib xyaw ntawm cov hmoov txhuv nplej hloov kho nrog qib qis ntawm polymerization uas muaj aldehyde pawg thiab carboxyl pawg thiab dej nyob rau hauv qhov kev ua ntawm oxidant los ntawm cua sov lossis gelatinizing ntawm chav tsev kub yog ib qho khoom nplaum hmoov txhuv nplej siab. Tom qab cov hmoov txhuv nplej siab raug oxidized, cov hmoov txhuv nplej siab oxidized nrog cov dej solubility, wettability thiab adhesiveness yog tsim.
Tus nqi ntawm cov oxidant me me, qib ntawm oxidation tsis txaus, tag nrho cov pawg ua haujlwm tshiab uas tsim los ntawm cov hmoov txhuv nplej txo qis, qhov viscosity ntawm cov nplaum nce ntxiv, qhov viscosity pib txo qis, qhov fluidity tsis zoo. Nws muaj kev cuam tshuam loj rau qhov acidity, pob tshab thiab cov ntsiab lus hydroxyl ntawm cov nplaum.
Nrog rau lub sijhawm ntev ntawm lub sijhawm teb, qib ntawm oxidation nce, cov ntsiab lus ntawm carboxyl pawg nce, thiab viscosity ntawm cov khoom txo qis maj mam, tab sis qhov pob tshab tau zoo dua thiab zoo dua.
Cov nplaum esterified starch
Cov nplaum hmoov txhuv esterified yog cov nplaum hmoov txhuv uas tsis lwj, uas muab cov hmoov txhuv nrog cov pab pawg ua haujlwm tshiab los ntawm kev sib xyaw esterification ntawm cov pab pawg hydroxyl ntawm cov hmoov txhuv thiab lwm yam khoom, yog li txhim kho kev ua haujlwm ntawm cov nplaum hmoov txhuv. Vim yog qhov sib txuas ib nrab ntawm cov hmoov txhuv esterified, yog li Lub viscosity nce ntxiv, qhov ruaj khov cia zoo dua, cov khoom tiv thaiv dej noo thiab tiv thaiv kab mob tau zoo dua, thiab cov txheej nplaum tuaj yeem tiv taus qhov siab thiab qis thiab lwm yam kev ua.
Cov nplaum nplaum uas muaj hmoov txhuv nplej siab
Kev txuas cov hmoov txhuv nplej siab yog siv cov txheej txheem lub cev thiab tshuaj lom neeg los ua kom cov hmoov txhuv nplej siab tsim cov dawb radicals, thiab thaum ntsib cov polymer monomers, cov tshuaj tiv thaiv saw hlau raug tsim. Ib sab saw hlau uas muaj cov polymer monomers raug tsim rau ntawm cov hmoov txhuv nplej siab tseem ceeb.
Siv qhov zoo ntawm qhov tshwj xeeb uas ob qho tib si polyethylene thiab cov hmoov txhuv nplej siab muaj cov pab pawg hydroxyl, cov hydrogen bonds tuaj yeem tsim ntawm polyvinyl cawv thiab cov hmoov txhuv nplej siab molecules, uas ua lub luag haujlwm ntawm "grafting" ntawm polyvinyl cawv thiab cov hmoov txhuv nplej siab molecules, yog li ntawd cov hmoov txhuv nplej siab nplaum tau muaj ntau qhov zoo nplaum, fluidity thiab tiv thaiv kev khov.
Vim tias cov nplaum hmoov txhuv nplej siab yog cov nplaum polymer ntuj, nws pheej yig, tsis muaj tshuaj lom thiab tsis muaj saj, thiab tsis muaj kuab paug rau ib puag ncig, yog li nws tau raug tshawb fawb thiab siv dav. Tsis ntev los no, cov nplaum hmoov txhuv nplej siab feem ntau yog siv rau hauv ntawv, ntaub paj rwb, hnab ntawv, daim ntawv lo, thiab cov ntawv corrugated.
Cov nplaum cellulose
Cov cellulose ether derivatives siv ua cov nplaum feem ntau suav nrog methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, carboxymethyl cellulose thiab lwm yam ethyl cellulose (EC): yog ib qho thermoplastic, dej-insoluble, nonionic cellulose alkyl ether.
Nws muaj kev ruaj khov tshuaj zoo, tiv taus alkali zoo, rwb thaiv hluav taws xob zoo heev thiab rheology kho tshuab, thiab muaj cov yam ntxwv ntawm kev tswj lub zog thiab kev ywj pheej ntawm qhov kub siab thiab qis. Nws yooj yim sib xws nrog siv quav ciab, resin, plasticizer, thiab lwm yam, xws li ntawv, roj hmab, tawv, thiab cov nplaum rau ntaub.
Methyl cellulose (CMC): ionic cellulose ether. Hauv kev lag luam textile, CMC feem ntau siv los hloov cov hmoov txhuv nplej siab zoo ua tus neeg sawv cev rau cov ntaub. Cov ntaub coated nrog CMC tuaj yeem ua rau qhov mos thiab txhim kho cov khoom luam ntawv thiab zas xim zoo heev. 'Hauv kev lag luam zaub mov, ntau yam khoom qab zib ntxiv nrog CMC muaj cov duab zoo ruaj khov, yooj yim rau xim, thiab tsis yooj yim rau mos. Ua ib qho nplaum, nws yog siv los ua cov tongs, cov thawv ntawv, cov hnab ntawv, cov ntawv ntsa thiab cov ntoo dag.
Cellulose estercov khoom siv sib xyaw: feem ntau yog nitrocellulose thiab cellulose acetate. Nitrocellulose: Kuj hu ua cellulose nitrate, nws cov nitrogen feem ntau yog nruab nrab ntawm 10% thiab 14% vim muaj ntau qib esterification.
Cov ntsiab lus siab yog feem ntau hu ua paj rwb hluav taws, uas tau siv rau hauv kev tsim cov hmoov phom tsis muaj pa luam yeeb thiab colloidal. Cov ntsiab lus qis yog feem ntau hu ua collodion. Nws tsis yaj hauv dej, tab sis yaj hauv cov kuab tshuaj sib xyaw ntawm ethyl cawv thiab ether, thiab cov tshuaj yog collodion. Vim tias cov kuab tshuaj collodion ua pa thiab tsim cov zaj duab xis tawv, nws feem ntau siv rau kev kaw lub raj mis, kev tiv thaiv qhov txhab thiab thawj cov yas celluloid hauv keeb kwm.
Yog tias ntxiv cov alkyd resin kom tsim nyog ua cov khoom hloov kho thiab siv cov camphor kom tsim nyog ua cov khoom tawv, nws yuav dhau los ua cov nplaum nitrocellulose, uas feem ntau siv rau kev sib txuas ntawv, ntaub, tawv, iav, hlau thiab ceramics.
Cellulose acetate: Kuj hu ua cellulose acetate. Thaum muaj cov tshuaj sulfuric acid catalyst, cellulose raug acetated nrog cov acetic acid thiab ethanol sib xyaw, thiab tom qab ntawd dilute acetic acid ntxiv rau hydrolyze cov khoom mus rau qib esterification xav tau.
Piv nrog rau nitrocellulose, cellulose acetate siv tau los tsim cov nplaum uas muaj cov kuab tshuaj los khi cov khoom yas xws li tsom iav thiab cov khoom ua si. Piv nrog cellulose nitrate, nws muaj kev tiv thaiv viscosity zoo heev thiab ruaj khov, tab sis nws tsis tiv taus acid, tiv taus dej noo thiab tiv taus huab cua.
kua nplaum protein
Cov nplaum protein yog ib hom nplaum ntuj uas muaj cov khoom muaj protein ua cov khoom siv tseem ceeb. Cov nplaum tuaj yeem ua los ntawm cov protein tsiaj thiab cov protein zaub. Raws li cov protein siv, nws muab faib ua cov protein tsiaj (fen kua nplaum, gelatin, cov kua nplaum protein sib xyaw, thiab albumin) thiab cov protein zaub (taum pauv, thiab lwm yam). Feem ntau lawv muaj kev sib txuas siab thaum qhuav thiab siv rau hauv kev tsim rooj tog thiab kev tsim khoom ntoo. Txawm li cas los xij, nws qhov kev tiv taus kub thiab kev tiv taus dej tsis zoo, uas cov nplaum protein tsiaj tseem ceeb dua.
Kua nplaum protein taum pauv: Cov protein zaub tsis yog tsuas yog cov khoom siv tseem ceeb hauv cov khoom noj xwb, tab sis kuj muaj ntau yam kev siv hauv cov teb uas tsis yog khoom noj. Tsim los ntawm cov kua nplaum protein taum pauv, thaum ntxov li xyoo 1923, Johnson tau thov daim ntawv pov thawj rau cov kua nplaum protein taum pauv.
Xyoo 1930, cov kua nplaum phenolic resin board (DuPont Mass Division) tsis tau siv dav vim tias lub zog sib txuas tsis muaj zog thiab tus nqi tsim khoom siab.
Nyob rau xyoo tas los no, vim yog kev nthuav dav ntawm kev lag luam nplaum, qhov acidity ntawm cov peev txheej roj thoob ntiaj teb thiab kev ua qias tuaj ib puag ncig tau nyiam kev mloog, uas ua rau kev lag luam nplaum rov xav txog cov nplaum ntuj tshiab, ua rau cov nplaum protein taum pauv dua los ua qhov chaw tshawb fawb kub.
Cov nplaum taum pauv tsis muaj tshuaj lom, tsis muaj saj, yooj yim siv, tab sis tsis tiv taus dej. Ntxiv 0.1% ~ 1.0% (pawg) ntawm cov neeg sawv cev sib txuas xws li thiourea, carbon disulfide, tricarboxymethyl sulfide, thiab lwm yam tuaj yeem txhim kho kev tiv taus dej, thiab ua cov nplaum rau kev sib txuas ntoo thiab kev tsim cov ntoo plywood.
Cov kua nplaum protein ntawm tsiaj: Cov kua nplaum tsiaj tau siv dav hauv kev lag luam rooj tog thiab kev ua ntoo. Cov khoom siv feem ntau suav nrog cov rooj tog xws li cov rooj zaum, cov rooj, cov txee, cov qauv, cov khoom ua si, cov khoom siv kis las thiab cov rooj zaum deck.
Cov kua nplaum tsiaj tshiab uas muaj cov khoom khov ntawm 50-60% suav nrog cov hom kho sai thiab kho qeeb, uas yog siv rau hauv kev sib txuas ntawm cov vaj huam sib luag ntawm cov txee hardboard, kev sib dhos hauv tsev mobile, cov laminates nyuaj, thiab lwm yam tsiaj thermal pheej yig dua. Cov nplaum me thiab nruab nrab xav tau cov kua nplaum.
Cov kua nplaum rau tsiaj yog ib hom kua nplaum yooj yim uas siv rau hauv cov ntaub nplaum. Cov ntaub nplaum no siv tau rau cov hnab muag khoom me me thiab cov ntaub nplaum hnyav xws li kev kaw lossis ntim cov khoom siv fiber khov kho thiab cov thawv corrugated rau cov khoom xa tuaj uas xav tau kev ua haujlwm ceev ceev thiab lub zog sib txuas ntev.
Lub sijhawm no, cov kua nplaum pob txha ntau heev, thiab cov kua nplaum tawv nqaij feem ntau siv ib leeg lossis ua ke nrog cov kua nplaum pob txha. Raws li Coating Online, cov kua nplaum siv feem ntau yog tsim nrog cov khoom khov kho li ntawm 50%, thiab tuaj yeem sib xyaw nrog dextrin ntawm 10% txog 20% ntawm cov kua nplaum qhuav, nrog rau me me ntawm cov neeg sawv cev ntub dej, cov yas yas, cov tshuaj tiv thaiv gel (thaum tsim nyog).
Cov nplaum (60 ~ 63 ℃) feem ntau yog sib xyaw nrog xim rau ntawm daim ntawv thaub qab, thiab qhov ntau ntawm cov khoom khov feem ntau yog 25% ntawm qhov hnyav ntawm lub hauv paus ntawv. Daim kab xev ntub tuaj yeem ziab hauv qab qhov nruj nrog cov menyuam dov cua sov lossis nrog cov cua sov ncaj qha hloov kho tau.
Tsis tas li ntawd xwb, cov ntawv thov kua nplaum rau tsiaj suav nrog kev tsim cov ntawv xuab zeb thiab cov ntaub so ntswg abrasives, qhov loj thiab txheej ntawm cov ntaub thiab ntawv, thiab kev khi cov phau ntawv thiab cov ntawv xov xwm.
Cov nplaum tannin
Tannin yog ib qho organic compound uas muaj cov pawg polyphenolic, pom dav hauv cov qia, tawv ntoo, cov hauv paus hniav, nplooj thiab cov txiv hmab txiv ntoo ntawm cov nroj tsuag. Feem ntau los ntawm cov ntoo ua cov tawv ntoo thiab cov nroj tsuag uas muaj cov tannin ntau. Cov tannin, formaldehyde thiab dej raug sib xyaw thiab cua sov kom tau cov tannin resin, tom qab ntawd ntxiv cov tshuaj kho thiab cov khoom sau, thiab cov nplaum tannin tau los ntawm kev sib tov kom sib npaug.
Cov nplaum tannin muaj kev tiv taus kub thiab av noo zoo, thiab kev ua tau zoo ntawm kev nplaum ntoo zoo ib yam li cov nplaum phenolic. Nws feem ntau yog siv rau kev nplaum ntoo, thiab lwm yam.
cov nplaum lignin
Lignin yog ib qho ntawm cov khoom tseem ceeb ntawm ntoo, thiab nws cov ntsiab lus suav txog li 20-40% ntawm cov ntoo, thib ob tsuas yog cellulose. Nws nyuaj rau rho tawm lignin ncaj qha los ntawm ntoo, thiab qhov chaw tseem ceeb yog cov kua pov tseg pulp, uas muaj cov peev txheej nplua nuj heev.
Lignin tsis yog siv ua cov nplaum xwb, tab sis yog cov phenolic resin polymer uas tau los ntawm kev ua haujlwm ntawm pawg phenolic ntawm lignin thiab formaldehyde ua cov nplaum. Yuav kom txhim kho kev tiv thaiv dej, nws tuaj yeem siv ua ke nrog cov isopropane epoxy isocyanate uas muaj nplhaib, stupid phenol, resorcinol thiab lwm yam tshuaj sib xyaw. Cov nplaum Lignin feem ntau yog siv rau kev sib txuas plywood thiab particleboard. Txawm li cas los xij, nws cov viscosity siab thiab xim tob, thiab tom qab kev txhim kho, qhov ntau thiab tsawg ntawm kev siv tuaj yeem nthuav dav.
Cov kua nplaum Arabic
Gum arabic, tseem hu ua acacia gum, yog ib qho exudate los ntawm tsob ntoo tsev neeg locust qus. Lub npe no vim nws muaj ntau nyob rau hauv cov teb chaws Arab. Gum arabic feem ntau yog tsim los ntawm cov polysaccharides uas muaj molecular hnyav qis dua thiab cov acacia glycoproteins uas muaj molecular hnyav siab dua. Vim yog qhov zoo ntawm cov gum arabic solubility hauv dej, cov qauv yooj yim heev, tsis tas yuav kub lossis cov khoom siv ua kom nrawm. Gum Arabic qhuav sai heev. Nws tuaj yeem siv rau kev sib txuas cov iav qhov muag, nplaum cov ntawv cim, nplaum cov ntawv cim lag luam, sib txuas cov khoom noj khoom haus thiab luam ntawv thiab zas xim.
Cov nplaum tsis muaj organic
Cov nplaum uas tsim los ntawm cov khoom inorganic, xws li phosphates, phosphates, sulfates, boron salts, hlau oxides, thiab lwm yam, hu ua inorganic adhesives. Nws cov yam ntxwv:
(1) Kev kub siab tiv taus, tuaj yeem tiv taus 1000 ℃ lossis kub dua:
(2) Cov khoom zoo tiv thaiv kev laus:
(3) Me me ntsws
(4) Brittleness zoo heev. Lub elastic modulus yog ib qho kev txiav txim siab siab dua li ntawm cov organic adhesives:
(5) Kev tsis kam dej, kua qaub thiab alkali tsis zoo.
Koj puas paub? Cov nplaum muaj lwm yam kev siv ntxiv rau kev nplaum.
Kev Tiv Thaiv Kev Xeb: Cov kav dej ntawm cov nkoj feem ntau yog npog nrog txhuas silicate thiab asbestos kom ua tiav kev rwb thaiv tsev thermal, tab sis vim muaj kev xau lossis hloov pauv txias thiab cua sov, dej condensate tsim, uas sib sau ua ke ntawm phab ntsa sab nraud ntawm cov kav dej hauv qab; thiab cov kav dej pa raug rau qhov kub siab rau lub sijhawm ntev, cov ntsev soluble Lub luag haujlwm ntawm kev xeb ntawm phab ntsa sab nraud yog qhov loj heev.
Txog qhov kawg no, cov kua nplaum iav dej tuaj yeem siv ua cov khoom siv txheej rau ntawm txheej hauv qab ntawm txhuas silicate los tsim cov txheej nrog cov qauv zoo li enamel. Hauv kev teeb tsa tshuab, cov khoom feem ntau raug ntsia hlau. Kev raug rau huab cua ntev rau cov khoom siv ntsia hlau tuaj yeem ua rau muaj kev xeb tawg. Hauv cov txheej txheem ntawm kev ua haujlwm tshuab, qee zaum cov ntsia hlau raug xoob vim muaj kev co hnyav.
Yuav kom daws tau qhov teeb meem no, cov khoom sib txuas tuaj yeem sib txuas nrog cov nplaum inorganic hauv kev teeb tsa kho tshuab, thiab tom qab ntawd txuas nrog cov bolts. Qhov no tsis yog tsuas yog ua lub luag haujlwm hauv kev txhawb nqa, tab sis kuj ua lub luag haujlwm hauv kev tiv thaiv xeb.
Biomedical: Cov khoom siv hydroxyapatite bioceramic yog ze rau cov khoom inorganic ntawm pob txha tib neeg, muaj kev sib raug zoo biocompatibility, tuaj yeem tsim cov tshuaj sib txuas nrog pob txha, thiab yog cov khoom siv hloov pauv zoo tagnrho.
Txawm li cas los xij, qhov dav dav elastic modulus ntawm cov HA cog cog uas tau npaj tseg yog siab thiab lub zog qis, thiab kev ua haujlwm tsis zoo tagnrho. Cov nplaum iav phosphate raug xaiv, thiab cov hmoov HA raw khoom raug sib txuas ua ke ntawm qhov kub qis dua li qhov kub sintering ib txwm muaj los ntawm kev ua haujlwm ntawm cov nplaum, yog li txo cov elastic modulus thiab xyuas kom meej tias cov khoom siv ua haujlwm.
Cohesion Technologies Ltd. tshaj tawm tias lawv tau tsim cov tshuaj Coseal sealant uas siv tau rau kev sib txuas ntawm lub plawv thiab tau siv tau zoo hauv kev kho mob. Los ntawm kev siv sib piv ntawm 21 tus neeg mob phais plawv hauv Tebchaws Europe, nws pom tias kev siv Coseal phais tau txo qhov kev sib txuas ntawm kev phais piv rau lwm txoj kev. Cov kev tshawb fawb tom qab ntawd qhia tau tias Coseal sealant muaj peev xwm zoo hauv kev phais plawv, kev kho mob poj niam thiab kev phais plab.
Kev siv cov nplaum hauv tshuaj yog lub hauv paus tshiab hauv kev lag luam nplaum. Cov nplaum ua los ntawm cov epoxy resin lossis unsaturated polyester.
Hauv kev siv tshuab tiv thaiv: Cov nkoj me me uas zais ntshis yog ib qho ntawm cov cim ntawm kev ua kom niaj hnub ntawm cov khoom siv tub rog hauv dej. Ib txoj hauv kev tseem ceeb ntawm kev zais ntshis hauv dej yog muab cov vuas suab nrov rau ntawm lub plhaub hauv dej. Cov vuas suab nrov yog ib hom roj hmab uas muaj cov yam ntxwv nqus suab.
Yuav kom paub txog kev sib xyaw ua ke ntawm cov vuas muffler thiab cov hlau phaj ntawm phab ntsa nkoj, nws yog qhov tsim nyog los vam khom cov nplaum. Siv rau hauv kev ua tub rog: kev saib xyuas lub tank, kev sib dhos nkoj tub rog, cov dav hlau tub rog lub foob pob hluav taws, cov txheej tiv thaiv thermal tiv thaiv foob pob hluav taws, kev npaj cov ntaub ntawv camouflage, tiv thaiv kev ua phem thiab tiv thaiv kev ua phem.
Puas zoo kawg li? Tsis txhob saib peb cov nplaum me me, muaj ntau yam kev paub nyob hauv.
Cov khoom siv lub cev thiab tshuaj lom neeg tseem ceeb ntawm cov nplaum
Lub sijhawm ua haujlwm
Lub sijhawm ntev tshaj plaws ntawm kev sib tov cov nplaum thiab kev sib txuas ntawm cov khoom kom sib txuas
Lub sijhawm kho thawj zaug
Lub Sijhawm Tshem Tawm Lub Zog Tso Cai Rau Lub Zog Txaus Rau Kev Tuav Cov Pob Qij Txha, suav nrog Cov Khoom Txav Mus Los Ntawm Cov Khoom Siv
lub sijhawm kho mob tag nrho
Lub sijhawm xav tau los ua kom tiav cov khoom siv kho tshuab kawg tom qab sib tov nplaum
lub sijhawm khaws cia
Nyob rau hauv qee qhov xwm txheej, cov nplaum tseem tuaj yeem tswj tau nws cov khoom siv thiab lub sijhawm khaws cia ntawm lub zog teev tseg
lub zog sib txuas
Nyob rau hauv qhov kev ua ntawm lub zog sab nraud, qhov kev ntxhov siab uas xav tau los ua kom qhov sib txuas ntawm cov nplaum thiab cov nplaum hauv cov nplaum tawg lossis nws thaj chaw ze
Lub zog txiav
Lub zog txiav yog hais txog lub zog txiav uas qhov chaw sib txuas ntawm lub tshuab tuaj yeem tiv taus thaum qhov chaw sib txuas puas lawm, thiab nws lub tshuab yog qhia hauv MPa (N/mm2).
Lub zog rub tawm tsis sib npaug
Qhov siab tshaj plaws uas qhov sib koom ua tau thaum raug lub zog rub tsis sib npaug, vim tias qhov hnyav feem ntau yog nyob rau ntawm ob sab lossis ib sab ntawm cov txheej nplaum, thiab lub zog yog ib chav ntev dua li ib cheeb tsam, thiab chav yog KN / m
Lub zog tensile
Lub zog tensile, tseem hu ua lub zog rub tawm sib npaug thiab lub zog tensile zoo, hais txog lub zog tensile ib cheeb tsam thaum lub zog lo rau puas tsuaj, thiab chav ntsuas tau qhia hauv MPa (N / mm2).
lub zog tev tawv
Lub zog tev tawm yog qhov siab tshaj plaws ntawm ib chav dav uas tuaj yeem tiv taus thaum cov khoom sib txuas raug sib cais raws li cov xwm txheej tev tawm tshwj xeeb, thiab nws lub chav yog qhia hauv KN / m
Lub sijhawm tshaj tawm: Plaub Hlis-25-2024