Kev ruaj khov yog qhov tseem ceeb rau ntau yam khoom yas, txij li cov khoom siv hauv tsheb mus rau cov thawv cia khoom. Peb cov hmoov yas talc, nrog nws cov qauv siv lead ua lamellar tshwj xeeb, ua rau flexural modulus (kev ntsuas ntawm kev ruaj khov) los ntawm 30-50% thaum ntxiv rau PP resins. Qhov kev txhim kho no yog vim txoj kev uas cov khoom tiaj tus, zoo li phaj ntawm talc sib txuas hauv cov yas matrix, tsim kom muaj kev sib txuas lus. Piv txwv li, ib lub tuam txhab tsim khoom siv hauv tsheb ua cov khoom siv PP bumpers tau txo qhov tuab ntawm phab ntsa ntawm lawv cov khoom los ntawm 18% tom qab koom nrog peb cov hmoov talc. Qhov no tsis yog tsuas yog ua rau kev txuag qhov hnyav xwb tab sis kuj txo cov kev siv resin, thaum kawg txo cov nqi tsim khoom ib chav. Ntxiv mus, kev ruaj khov ntxiv ua kom ntseeg tau tias cov khoom tuaj yeem tiv taus kev thauj mus los thiab kev teeb tsa yam tsis muaj kev sib txhuam lossis tawg.

Qhov ruaj khov ntawm qhov loj me yog lwm qhov txiaj ntsig tseem ceeb uas ua rau peb cov hmoov talc txawv ntawm lwm cov. Cov khoom yas feem ntau ntsib teeb meem ntsws lossis warping thaum lub sijhawm txias tom qab molding, uas tuaj yeem ua rau muaj teeb meem kim heev thiab cov khoom tsis zoo. Peb cov hmoov talc, nrog nws qhov loj me thiab kev faib tawm ntawm cov khoom me me uas tswj tau zoo, txo qhov ntsws los ntawm 15-20%. Qhov no yog qhov tseem ceeb heev rau cov khoom siv precision xws li cov khoom siv hluav taws xob, qhov twg txawm tias qhov sib txawv me me tuaj yeem ua rau tag nrho cov khoom sib dhos tsis ua haujlwm. Ib lub tuam txhab hluav taws xob paub zoo uas tsim cov yeeb nkab PVC rau cov kav hluav taws xob tau tshaj tawm tias muaj kev txo qis 90% ntawm cov nqi tsis zoo tom qab hloov mus rau peb cov hmoov talc. Qhov sib xws ntawm cov khoom tsim tau ua kom ntseeg tau tias lawv cov khoom ua tau raws li cov qauv kev lag luam nruj tshaj plaws, ua rau lawv lub koob npe nrov rau qhov zoo.

Tsis zoo li qee cov khoom sau uas ua rau tsis kam rau kev cuam tshuam, peb cov hmoov yas sau talc yeej tswj lossis txhim kho cov yam ntxwv no thaum siv rau hauv qhov ntau thiab tsawg zoo tshaj plaws (10–30% los ntawm qhov hnyav). Qhov no yog qhov tseem ceeb tshaj plaws rau cov khoom uas raug kev cuam tshuam ntau zaus, xws li cov vaj huam sib luag sab hauv tsheb lossis cov khoom ua si menyuam yaus. Qhov sib faib me me ntawm peb cov hmoov talc lav qhov sib npaug hauv cov yas yaj, tiv thaiv kev tsim cov ntsiab lus ntxhov siab uas yuav ua rau tawg. Piv txwv li, ib tus neeg muag khoom siv tsheb hauv North America, pom tias kev koom ua ke peb cov hmoov talc rau hauv PP qhov rooj vaj huam sib luag ua rau muaj kev tiv thaiv kev cuam tshuam ntau dua 22%. Qhov kev txhim kho no ua rau lawv ua tau raws li cov qauv kev nyab xeeb nruj uas cov chaw tsim khoom siv tseem ceeb (OEMs) tau teeb tsa, ua rau lawv muaj kev sib tw hauv kev ua lag luam.

Kev siv nyiaj tsawg yog ib qho tseem ceeb rau cov tuam txhab tsim yas, thiab peb cov hmoov talc muab kev txuag nyiaj ntau. Los ntawm kev hloov 10–30% ntawm cov resin nrog peb cov hmoov talc pheej yig dua, cov tuam txhab tsim khoom tuaj yeem txo cov nqi khoom siv raw los ntawm 8–15%. Txhawm rau piav qhia txog kev txuag tau, xav txog lub tuam txhab tsim 5,000 tons ntawm cov khoom PP txhua xyoo. Los ntawm kev siv peb cov hmoov talc, lawv tuaj yeem txuag tau ntau dua $ 200,000 txhua xyoo. Ntxiv rau qhov kev txuag nyiaj ncaj qha los ntawm kev hloov cov resin, peb cov hmoov talc kuj tseem txhim kho qhov kev ntws ntawm cov yas yaj. Qhov kev ntws zoo no txo ​​​​​​kev siv hluav taws xob thaum lub sijhawm extrusion thiab txhaj tshuaj molding, txo cov nqi tsim khoom ntxiv. Nws kuj tso cai rau lub sijhawm voj voog sai dua, nce throughput thiab ua rau cov tuam txhab tsim khoom kom tau raws li qhov xav tau ntau dua yam tsis tas yuav hloov kho cov khoom siv kim.

Peb cov txheej txheem tsim khoom yog ib qho pov thawj rau peb txoj kev cog lus rau qhov zoo. Peb tau txais cov talc nyoos los ntawm cov chaw tso nyiaj uas paub zoo tias lawv muaj cov magnesium silicate ntau (≥95%) thiab cov qib tsis muaj kuab paug tsawg. Cov txheej txheem rho tawm pib nrog kev khawb av kom zoo kom ntseeg tau tias cov hlau muaj kev ncaj ncees. Thaum khawb tau, cov talc yuav ua tiav ntau yam txheej txheem ua tiav. Ua ntej, nws raug tsoo thiab sib tsoo kom txo nws qhov loj. Tom qab ntawd, cov txheej txheem ntxuav siab heev raug siv, suav nrog kev sib cais sib nqus kom tshem tawm cov hlau me me thiab cov khoom ua npuas dej kom tshem tawm cov zaub mov uas tsis yog talc. Rau peb cov qib zoo heev, peb siv cov tshuab jet mills zoo tshaj plaws uas muab kev tswj hwm qhov loj me ntawm cov khoom. Txhua pawg ntawm cov hmoov talc raug kuaj xyuas kom zoo rau kev faib tawm ntawm cov khoom me me, qhov dawb, thiab cov tshuaj lom neeg. Cov txiaj ntsig ntawm kev xeem ntxaws ntxaws tau sau tseg hauv Daim Ntawv Pov Thawj Kev Tshawb Fawb (COA) uas tau muab rau peb cov neeg siv khoom, ua rau lawv pom tseeb thiab ntseeg siab rau qhov zoo ntawm peb cov khoom.

Peb nkag siab tias txhua daim ntawv thov yas muaj cov kev xav tau tshwj xeeb, yog vim li cas peb thiaj muab cov kev daws teeb meem tshwj xeeb. Rau cov khoom nyias nyias xws li cov zaj duab xis ntim khoom, qhov twg pob tshab yog qhov tseem ceeb, peb muab 2000-mesh talc hmoov. Cov hmoov zoo no tawg yooj yim hauv cov yas matrix, kom ntseeg tau tias nws tsis cuam tshuam qhov meej lossis cov khoom pom ntawm zaj duab xis. Ntawm qhov tod tes, rau cov ntawv thov kub siab xws li hauv qab-lub-hood tsheb qhov chaw, uas raug rau kub heev, peb muab cov talc-stabilized kub. Cov khoom tshwj xeeb no yog tsim los tswj nws cov kev ua tau zoo txawm tias ntawm qhov kub txog li 180 ° C, kom ntseeg tau tias kev ntseeg tau thiab lub neej ntev ntawm cov khoom. Peb pab neeg ua haujlwm mob siab ua haujlwm nrog cov neeg siv khoom, ua qhov kev sim sib xws tob nrog ntau yam resins thiab additives. Los ntawm cov kev sim no, peb txiav txim siab qhov koob tshuaj zoo tshaj plaws thiab qhov loj me ntawm cov khoom rau txhua daim ntawv thov, muab cov kev daws teeb meem tshwj xeeb uas ua tau raws li cov kev xav tau tshwj xeeb ntawm peb cov neeg siv khoom.

Kev xa khoom thiab kev txhawb nqa cov neeg siv khoom yog ib feem tseem ceeb ntawm peb cov kev pabcuam. Peb muaj kev xaiv xa khoom yooj ywm los ntawm hiav txwv, cua, lossis av, uas ua rau peb ua tau raws li lub sijhawm thiab cov kev xav tau ntawm peb cov neeg siv khoom. Txawm tias nws yog ib qho kev txiav txim me me, ceev ceev uas yuav tsum tau xa sai sai los ntawm huab cua lossis ib qho khoom xa tuaj loj uas tuaj yeem thauj tau zoo dua los ntawm hiav txwv, peb muaj peev xwm ua kom xa khoom raws sijhawm. Peb txoj kev cog lus rau kev txaus siab ntawm cov neeg siv khoom txuas ntxiv mus rau qhov muag. Peb pab neeg txhawb nqa tom qab muag yeej ib txwm npaj txhij los muab kev pab daws teeb meem thiab cov lus qhia txog kev ua haujlwm zoo. Peb nkag siab tias tej zaum yuav muaj teeb meem tshwm sim thaum lub sijhawm koom ua ke ntawm peb cov hmoov talc rau hauv cov txheej txheem tsim khoom, thiab peb mob siab rau kev pab peb cov neeg siv khoom kov yeej txhua yam teeb meem uas lawv yuav ntsib. Tsis tas li ntawd, peb muab cov qauv ntawm peb cov hmoov talc, uas ua rau cov neeg siv khoom tuaj yeem soj ntsuam nws cov kev ua tau zoo hauv lawv cov chaw ua haujlwm ua ntej txiav txim siab rau cov xaj loj. Cov txheej txheem kuaj tsis muaj kev pheej hmoo no muab sijhawm rau peb cov neeg siv khoom los txiav txim siab zoo thiab ua kom peb cov khoom ua tau raws li lawv cov qauv nruj.

Vim nws muaj peev xwm txhim kho kev ua tau zoo thiab txo cov nqi, peb cov hmoov yas talc tau txais kev nyiam dav dav ntawm cov chaw tsim khoom hauv Tebchaws Europe, Asia, thiab North America. Nws tau dhau los ua qhov kev xaiv ntseeg siab rau cov tuam txhab uas tab tom nrhiav kev txhim kho qhov zoo ntawm lawv cov khoom thaum tswj hwm kev sib tw hauv kev lag luam thoob ntiaj teb. Raws li qhov kev thov rau cov yas ua tau zoo txuas ntxiv mus, peb cov hmoov talc yuav tseem yog qhov kev daws teeb meem ntau yam thiab txhim khu kev qha, pab cov tuam txhab yas kom nyob ua ntej hauv kev lag luam uas hloov pauv sai.