Kev faib tawm thiab hom fillers

Muaj ntau ntau hom thiab ntau yam ntawm fillers, feem ntau yog cov hauv qab no:
(1) Calcium carbonate: Calcium carbonate yog cov khoom siv ntau tshaj plaws thiab pheej yig tshaj. Calcium carbonates ntawm txawv keeb kwm thiab cov khoom yog raws li nram no:
Ib qho yooj yim calcium carbonate (chalk): dawb crystals los yog hmoov, tshwj xeeb gravity 2.70-2.95, soluble nyob rau hauv acid tab sis nyuaj rau yaj nyob rau hauv dej. Kub rau 825 degree decomposes rau hauv calcium oxide thiab carbon dioxide.
Ntuj calcium carbonate minerals muaj xws li limestone, calcite, calcite, datian pob zeb, thiab lwm yam, uas yog av rau hauv hmoov thiab hu ua dog dig calcium carbonate. Lawv muab faib ua kev sib tsoo qhuav thiab ntub dej sib tsoo, nrog rau qhov loj me ntawm 1.5-44 microns, kev sib tsoo qhuav muaj qhov loj me dua 20 microns thiab kev sib tsoo ntub dej muaj qhov loj me me dua 20 microns.
B Precipitated calcium carbonate: Hmoov calcium carbonate generated los ntawm nag lossis daus ntawm txiv qaub dej los yog sodium carbonate tov nrog txiv qaub dej los ntawm carbon dioxide, feem ntau muab faib ua:
Lub teeb precipitated calcium carbonate: lub ntiajteb txawj nqus 2.50-2.60
Heavy precipitated calcium carbonate: lub ntiajteb txawj nqus 2.70-2.80
Qhov loj me me ntawm precipitated calcium carbonate yog 1. cawv, thiab tso carbon dioxide thaum nws ntsib acid; nws muaj me ntsis hygroscopicity.
C Active lub teeb calcium carbonate: Qhov no yog lub teeb calcium carbonate nrog ib txheej ntawm fatty acid xab npum adsorbed rau saum npoo ntawm cov khoom. Nws yog cov hmoov dawb uas tsis muaj tsw thiab tsw tsw ntxhiab nrog lub ntiajteb txawj nqus ntawm 1.99-2.01. Cov ntsiab lus noo noo yog qis dua 0.5%, cov ntsiab lus stearic acid yog 2-5%, qhov loj me me yog tsawg dua 0.1 microns, thaj chaw tshwj xeeb yog 25-28m / g, thiab lub refractive index yog 1.49. Nws yog insoluble nyob rau hauv dej thiab cawv, decomposes thiab tso carbon dioxide thaum nws ntsib acid, thiab tsis muaj tshuaj hloov thaum muab tso rau hauv cov huab cua, thiab tsuas yog me ntsis hygroscopicity. Qhov kev ua si yog ntau dua li cov calcium carbonate zoo tib yam, thiab nws muaj kev txhawb zog me ntsis.
(2) Cov pa roj carbon dub: Hom muab tub lim no suav nrog ntau yam carbon dub. Cov pa roj carbon dub yog cov khoom tsim los ntawm ib nrab combustion lossis thermal decomposition ntawm cov kua lossis gaseous hydrocarbons thaum tsis muaj huab cua. Lub hauv paus muaj pes tsawg leeg ntawm cov pa roj carbon dub feem ntau yog carbon, tsuas yog ib qho me me ntawm hydrogen thiab oxygen. Nws yog cov hmoov dub dub nrog cov qauv "quasi-graphite crystal" thiab cov colloidal particle loj. Vim muaj ntau yam thev naus laus zis, carbon dub tuaj yeem muab faib ua ntau qib, tab sis ob qho hauv qab no feem ntau siv hauv kev lag luam yas:
Lub Tank Ntuj Roj Dub: Cov hmoov dub dub nrog lub ntsej muag ntxhib uas yooj yim nqus dej noo hauv huab cua. Qhov nruab nrab particle loj yog 23-30 micrometers, thiab thaj chaw tshwj xeeb yog 130-160m / g.
B Mixed gas tank dub: Qhov no yog ib hom carbon dub ua los ntawm anthracene roj, naphthalene roj, thiab lwm yam nyob rau hauv thee tar uas yog gasified thiab tov nrog natural gas li raw khoom.
Lub npe hu ua "cov qauv" ntawm cov pa roj carbon dub yog hais txog qhov nyiam ntawm cov pa roj carbon dub kom sib sau ua ke thiab teeb tsa hauv cov hlua. Qhov "cov qauv" no ua lub luag haujlwm tseem ceeb hauv cov khoom rheological ntawm cov pa roj carbon dub-polymer system. "Cov qauv siab" carbon dub txhawb siab viscosity, siab elastic modulus, tsis tshua muaj nqi thiab du tsis tshua muaj o extrusion ntawm polymers. Cov pa roj carbon dub ntxiv rau cov polymers tuaj yeem tsis tsuas yog tiv thaiv lub teeb degradation thiab thermal oxidation, tab sis kuj txhim kho rigidity ntawm cov khoom yas.
(3) Cellulose
Daim ntawv Shredded: Kraft ntawv, ntawv dawb, ntawv xim thiab lwm yam ntawv tuaj yeem siv los ua cov khoom ntim. Feem ntau, daim ntawv yog soaked nyob rau hauv resin, sliced ​​​​tom qab ziab, thiab ces nias rau hauv boards.
B Ntoo hmoov: Siv dav hauv cov thermosetting resins, nws muaj kev cuam tshuam lub zog, qis shrinkage, zoo hluav taws xob thiab tus nqi qis. Cov hmoov ntoo yuav tsum tsis sib xws hauv qhov loj, thiab cov khoom loj xws li ntoo chips thiab tawv ntoo yuav tsum raug tshem tawm.
C Cotton scraps: Cov paj rwb yog tau los ntawm kev txiav paj rwb los yog purifying paj rwb spinning. Cov khoom siv yas ntim nrog cov paj rwb tau txhim kho kev cuam tshuam thiab ntim loj.
D-cellulose: -cellulose yog cov khoom tsis muaj xim cellulose tau los ntawm kev kho alkali ntawm ntoo pulp. Nws yog tsuas yog siv nyob rau hauv lub teeb xim urea-formaldehyde thiab melamine formaldehyde resin formulations. Qhov cuam tshuam lub zog ntawm cov khoom ntim nrog -cellulose tsis zoo li cov khoom ntim cov hmoov ntoo. Lawv muaj hardness siab dua, tsis cuam tshuam rau lub ntiajteb txawj nqus, thiab muaj tsawg molding shrinkage.
E Peanut plhaub: Peanut plhaub yog ib qho khoom siv pheej yig nrog cov ntsiab lus phenol siab thiab ntau qhov chaw. Peanut plhaub hmoov tuaj yeem txhim kho kev ua tau zoo ntawm HDPE, PS, thiab PP thiab txo cov nqi. Qhov saum npoo ntawm txiv laum huab xeeb hmoov yog feem ntau tsis-polar. Nws qhov nqus dej kuj tseem qis dua li cov hmoov ntoo.
F Walnut plhaub: Walnut hmoov yog cov pov tseg uas tsim thaum ua cov walnuts. Vim tias nws muaj ntau cov ntoo cob thiab keratin wax, nws tsis nqus dej.
G iav fiber ntau; feem ntau yog siv rau cov yas reinforcement.