Koj puas paub tias fiberglass yog cov khoom tseem ceeb hauv kev tsim cov steel ncej ntawm engineering plastics?

Engineering plastics yog siab -cov yas yas siv rau hauv cov ntawv thov kev lag luam, uas muaj lub zog siab, siab nruj, qhov ruaj khov, thiab nkag siab. Cov khoom ntawm engineering plastics qia tsis tsuas yog los ntawm cov khoom ntawm cov yas resin tab sis kuj, thiab tej zaum tseem ceeb tshaj, los ntawmfiberglassCheebtsam incorporated rau hauv cov yas. iav fiber ntau ua raws li "steel thiab moj khaum" ntawm engineering plastics, piv rau cov hlau reinforcing hauv pob zeb. Feem ntau, alkali-dawb iav fiber ntau yog siv rau hauv kev tsim cov yas, thiab nws tuaj nyob rau hauv daim ntawv ntev, luv, thiab tiaj tus. Cov ntaub ntawv sib txawv ntawm cov iav fiber ntau nthuav tawm cov khoom sib txawv.

 

Cov iav fiber ntau, feem ntau pom nyob rau hauv kev hloov kho plastics kev lag luam, tuaj yeem faib raws li nws muaj pes tsawg leeg thiab daim ntawv:

 

Classified los ntawm cov tshuaj muaj pes tsawg leeg

Alkali-dawb fiberglass (E fiberglass): Alkali cov ntsiab lus<1%, balanced insulation, strength, and water resistance, highest production volume; used in wind turbine blades, PCBs, and plastic modification.

 

Nruab nrab-alkali fiberglass (C fiberglass): Alkali cov ntsiab lus 6% -12%, zoo acid kuj, tsis muaj zog rwb thaiv tsev, tsis muaj nqi; siv nyob rau hauv tshuaj tiv thaiv corrosion thiab asphalt waterproofing.

 

Classification los ntawm morphology

Nruam untwisted ntev iav fiber ntau: Cov iav fibers kos rau hauv cov pob khoom thiab lub qhov txhab rau hauv cov yob siv rau hauv kev ua textile thiab kev txhim kho cov qauv;

Chopped iav fiber ntau: iav fiber ntau yob uas yog txiav tom qab kho deg; ib hom loj ntawm fiber ntau siv rau kev hloov kho thiab kev txhawb nqa yas;

Flat iav fiber ntau: Ib hom tshwj xeeb ntawm iav fiber ntau nrog tus ntoo khaub lig elliptical -section tswj thaum lub sij hawm kos duab; muaj nyob rau hauv ob qho tib si ntev thiab tws daim ntawv. Nws nthuav tawm cov yam ntxwv ua haujlwm tshwj xeeb hauv kev siv.

 

Yuav ua li cas fiberglass tsim lub "steel thiab hlau skeleton" ntawm yas?

 

Cov laj thawj tseem ceeb vim li cas iav fiber ntau yog tus khub zoo tshaj plaws rau cov yas yas hauv nws lub peev xwm los them nyiaj rau qhov tsis zoo ntawm cov yas yas los ntawm kev sib koom ua ke "fiber-" cov nyhuv thiab cohesive quab yuam hloov.

 

Mechanical Strengthening: Zoo li ntxiv "steel tuav" rau cov yas, lub zog tensile tuaj yeem nce los ntawm 20% mus rau 100%, thiab cuam tshuam rau qhov hnyav tuaj yeem ncav cuag qib ntawm cov hlau;

 

Deformation Resistance: Nws inhibits resin shrinkage, ua rau cov khoom tsis tshua muaj warping nyob rau hauv siab kub thiab kev ntxhov siab, nrog shrinkage tus nqi tswj kom tsawg kawg yog 0.15%;

 

Tus nqi sib npaug: Piv rau cov khoom siv hluav taws xob ntshiab, fiber ntau- cov khoom siv ntxiv tuaj yeem ua tiav cov kev ua haujlwm siab ntawm tus nqi qis. Piv txwv li, hloov cov hlau nrog ntev iav fiber ntau PA hauv cov khoom siv tsheb txo qhov hnyav los ntawm 50% thaum txo tus nqi los ntawm 30%.

 

Dab tsi yog cov khoom tshwj xeeb ntawm ntau hom iav fiber ntau hauv plastics?

 

Txawm li cas los xij, cov ntaub ntawv sib txawv ntawm cov iav fiber ntau ua rau muaj kev cuam tshuam loj heev rau cov yas. Xaiv hom zoo tuaj yeem ua ob npaug ntawm cov khoom ua haujlwm; xaiv hom tsis ncaj ncees lawm yuav ua rau muaj teeb meem xws li cov iav fibers raug thiab tawg yooj yim. Feem ntau siv iav fibers feem ntau suav nrog iav fibers ntev, iav fibers luv, thiab iav fibers, uas txawv heev hauv morphology, kev ua tau zoo, kev ua, thiab daim ntawv thov scenarios.

 

Ntev iav fibers ua zoo li "khoom steel tuav," ua ib qho kev sib txuas txuas ntxiv hauv cov resin, zoo hloov kev ntxhov siab. Qhov no yog vim li cas lawv lub zog cuam tshuam yog 50% mus rau 100% siab dua li ntawm cov iav luv luv.

 

Cov iav luv luv ua zoo li "pob zeb crushed," uniformly dispersed tab sis nrog txwv ntev, haum rau cov ntawv thov uas xav tau siab isotropy.

 

Flat iav fibers, ntawm qhov tod tes, ua zoo li "thin steel sheets," nrog lub thickness ntawm 3 mus rau 10 μm thiab dav ntawm 50 mus rau 200 μm. Qhov no tso cai rau thaj chaw sib cuag nrog cov resin uas yog 3 mus rau 5 npaug loj dua li ntawm cov iav fiber ntau, ncaj qha txhim kho nto smoothness los ntawm ib theem.

 

Cov yam ntxwv tshwm sim

① Flat iav Fiber Filled PC

Vim nws tiaj tus, ribbon-zoo li cov qauv, thaj chaw sib cuag nrog PC resin yog 3-5 npaug loj dua li cov iav fiber ntau ntawm tib qhov hnyav, ua rau muaj kev hloov pauv ntawm cov fiber ntau thiab resin interface. Ua ke nrog qhov tsawg ntawm qhov roughness tiav los ntawm cov txheej txheem kev kos duab tshwj xeeb, lub ntsej muag gloss ntawm cov khoom tiav ( ntsuas ntawm 60℃kaum sab xis) siab.

 

② Luv iav Fiber Filled PC

Lub luv thiab uniformly dispersed fibers ua rau softer lub teeb tawg. Txawm li cas los xij, qhov kev xav me ntsis tseem muaj nyob ntawm qhov sib cuam tshuam ntawm qhov hloov pauv -section fiber thiab resin, ua rau qis qis dua li cov iav fiber ntau, feem ntau ntawm 70 thiab 80. Qhov cuam tshuam fiber ntau qhov xav tau ntau dua ntawm cov txheej txheem molding.

 

③ Ntev iav Fiber puv PC

Cov fibers ntev (6-12mm) yog qhov yooj yim rau kev sib sau ua ke hauv zos thaum ua, thiab cov fiber ntau-resin interface muaj qhov sib txawv me me vim "cov nyhuv pob txha." Lub teeb undergoes diffuse reflection nyob rau hauv cov cheeb tsam no, ua rau ib tug gloss theem ntawm tsuas yog 50-60, nrog ib tug me ntsis matte nto. Qhov no yog qhov tsim nyog rau cov khoom siv xws li engineering machinery vaj tse.

Mechanical Properties

 

Qhov ntev ntawm cov iav fiber ntau hauv cov yas, cov ntsiab lus sib txuas ntau dua ntawm cov iav fiber ntau thiab cov resin, ua rau lub zog zoo dua.

 

Cov iav fiber ntau ntev tuaj yeem suav hais tias yog qhov tsis sib haum xeeb "lub zog sib tw". Cov ntaub ntawv qhia tau hais tias, rau tib cov ntsiab lus, lub zog tensile ntawm ntev iav fiber reinforced PA yog 20% ​​~ 30% siab dua li cov iav fiber ntau luv luv, thiab qhov cuam tshuam rau lub zog yog 50% ~ 60% siab dua, ua rau nws tshwj xeeb tshaj yog haum rau cov khoom raug rau ntev - lub sij hawm kev ntxhov siab, xws li tsheb bumpers thiab lub cev muaj zog kiv cua.

 

Luv iav fiber ntau zoo hauv "sib npaug." Txawm hais tias nws lub zog qis dua me ntsis, nws muaj cov isotropy zoo, nrog rau qhov sib txawv me me ntawm txhua qhov kev qhia, ua rau nws haum rau precision qhov chaw xws li lub zog thiab cov khoom sib txuas.

 

Flat iav fiber, ntawm qhov tod tes, me ntsis txhim kho "sab toughness." Siv cov iav iav fiber ntau reinforced silicone copolymer PC hauv cov xov tooj ntawm tes, txhim kho kev poob qis los ntawm 40% thiab zam qhov tsis xws luag ntawm "pob iav fiber ntau."

Dimensional Stability

Ntev iav fibers muaj zog "skeleton nyhuv" uas zoo tuav cov resin nyob rau hauv qhov chaw, ua rau shrinkage tsawg li 0.15% nyob rau hauv cov kev taw qhia ntws. Txawm li cas los xij, lawv qhia qhov sib txawv tseem ceeb hauv kev poob qis hauv txoj kab ntsug, ua rau loj - thaj chaw tiaj tiaj ua rau muaj kev sib hloov.

 

Cov iav luv luv shrinks ntau uniformly, ua rau lawv haum rau me me mus rau nruab nrab - qhov loj me.

 

Flat iav fibers, nrog lawv cov qauv tiaj tus, muaj kev sib npaug ntau dua hauv - dav hlau shrinkage, ua rau lawv yog qhov kev xaiv zoo tshaj plaws rau tsheb sab hauv vaj huam sib luag.