Sio2 Hydrophobic

Tshwj xeeb Sio2 Hydrophobic

Hydrophobic silica yog feem ntau tom qab kho khoom. Sib txawv ntawm ntau hom precipitated silica yuav siv tau los ua cov khoom pib kom hnov ​​mob nrog lub chaw ua haujlwm uas tsim los ntawm ib pawg silicon hydrocarbyl; cov khoom no yog hydrophobic vim muaj qhov sib txuas ntawm non-hydrolyzed methyl pawg.

Tsis zoo li cov thawj hydrophilic silica, hydrophobic silica tsis tau nrog dej. Txawm hais tias tus hydrophobic silica density ntau dua qhov ceev, lawv tuaj yeem ntab dej. Tom qab hydrophobization, tus nqi ntawm cov dej noo absorbed yuav tsum qis dua li ntawm qhov qub hydrophilic vaporized silicon.

Los ntawm kev kho deg ntawm precipitated silica, nws cov kev ua tau zoo yuav optimized nyob rau hauv ib tug xov tooj ntawm tej daim ntaub ntawv, uas yuav ua tau zoo ntawm rheological zog ntawm ntau cov kua polymer systems, tshwj xeeb tshaj yog nyob rau hauv cov epoxy rechib system.

Khoom Discription

NTIM

Cov Lus Nug:

1. Dab tsi yog daim ntawv thov ntawm hydrophobic silica?

Rheological tus neeg sawv cev: cais rau emulsion, tus neeg sawv cev tiv thaiv kev ruaj ntseg rau xim / coatings / hauv / toners, thickening agent, thixotropic agent, anti-block tus neeg rau pluaj yas;

Puab hmoov qhuav: rau cov tshuaj tua hmoov tua hmoov av thiab hmoov tsho tiv no;

Granula tus neeg saib xyuas thiab cov tshuaj dispersion rau tshuaj tua kab;

Carrier rau kev tawg;

Thickening agent rau Adhesives thiab ntau yam ntawm cov pa roj carbon zoo li epoxy resin;

Tus neeg sawv cev ntawm tus kheej:

Abrasive tus neeg sawv cev rau tshuaj txhuam hniav;

Reinforcing tus neeg sawv cev rau cov organic elastomer organic;

Nrog cov yam ntxwv hydrophobic thiab anti-corrosion, hydrophobic precipitated silica tuaj yeem txhim khu cov cuab yeej insulating rau cables thiab cords. Thiab nrog lub siab, qhov hydrophobic precipitated silica yog dav siv nyob rau hauv cov yas yas, hloov kho yas thiab roj hmab.

2. Dab tsi yog silica dej?

Hydrated Silica (lus Askiv lub npe Hydrated Silica; Silicondioxidehydrate ), tseem hu ua dawb cov roj carbon , tseem hu ua teeb lub silica, lub ntsiab tivthaiv yog silica, dawb amorphous hmoov. Lub teeb xoob, nyob rau hauv cov kab coustic thiab hydrofluoric acid, solububle hauv dej, cov kuab tshuaj thiab cov acids (tshwj tsis yog hydrofluoric acid). Kub, tsis muaj zog, tsis qab, tsis muaj ntxhiab, nrog hluav taws xob zoo hluav taws xob. Nws qhov kev ua haujlwm zoo li cov pa roj carbon, tab sis nws yog xim dawb.Qhov mis nyuj tov molecular thiab cov qauv ntawm lub cev tuaj yeem sawv cev tau los ntawm SiO2 · nH2O, qhov twg cov nH2O yog tam sim no ua ib cov tshuaj hydroxyl. Nws cov qauv macroscopic zoo ib yam li cov roj dub, qhov hais yog kheej kheej, ib qho me me ntawm qhov sib npaug, yog cov qauv zoo li cov qauv (theem ob sab). Chain qauv thiab hydrogen nyiaj quab yuam tsim ib pawg aggregates. Cov khoom qub yog qhov zoo heev, nqus dej noo rau hauv cov huab cua los ua cov ntawv nplua nplua. Cov tshuaj lim dej ntawm cov zis ntawm hydroxyl hais, feem ntau raug rho tawm hydroxyl, uas nyob ib sab hydroxyl, silicon peb (saib daim duab 2.3). Wherein qhov adsorption ntawm pawg neeg sib txawv ntawm pawg neeg uas nyob ib sab yog ib qho tseem ceeb. Cov nyob ntawm cov pawg no ua rau lub ntsej muaj silica muaj zog hydrophilic, deg thaj tsam thiab dispersion muaj peev xwm loj, mechanical zog thiab rhuav kuj yog siab. Kev kub siab tsis zoo, kev raus dej, nrog me me, thaj chaw loj, cov yam ntxwv loj. Qhov siv los txhuam cov roj hmab lag luam zoo heev, lub lubricants, cov ntaub ntawv pov tseg. Yuav dilute sodium silicate kua thiab dilute hydrochloric acid reaction system

Cim npe nrov: Sio2 hydrophobic Tuam Tshoj, hoobkas, lwm tus lag luam, tuam txhab, yuav, ua nyob rau hauv Tuam Tshoj, ShaXian Sanming