Nhau - Hydroxyethyl Cellulose Inokanganisa Sei Kusviba

Hydroxyethyl cellulose (HEC)ipolymer isinganyungudike mumvura inogadzirwa ne cellulose yechisikigo kuburikidza ne etherification. Nekuti inoumba mhinduro yakajeka, yakagadzikana ye colloidal kana yanyungudutswa mumvura, inoshandiswa zvakanyanya mukuputira, makemikari emumba, zvinhu zvekuvaka, kubhowa kwemafuta, nedzimwe nzvimbo. Kukanganisa kweHEC pa viscosity yesystem ndeimwe yemabasa ayo akakosha, uye pesvedzero iyi inosanganisira zvinhu zvakawanda, kusanganisira chimiro chemamorekuru, kunyunguduka, uye mamiriro ekunze.

1. Hukama huripo pakati peMaumbirwo eMolecular uye Viscosity

Cheni huru yeHEC imusana we cellulose wakabatana ne β-1,4-glucose bonds, ne hydroxyl groups pa glucose units dzichitsiviwa ne hydroxyethyl groups. Dhigirii rekutsiva (DS) uye molar substitution (MS) zvinosarudza kunyungudika kwemorekuru mumvura uye kuchinjika kwezvikamu zvecheni. Maketani marefu emorekuru (huremu hwakawanda hwemorekuru) uye mwero wepakati wekutsiva zvinoguma nekusangana kwakawanda mushure mekunyorova, zvichiwedzera zvakanyanya viscosity yesystem. HEC ine huremu hwakawanda inogadzira viscosity yakakura kupfuura mhando dzine huremu hwakaderera pahuwandu humwe chete.

2. Maitiro ekunyunguduka uye emvura anokanganisa kusviba

Maitiro ekunyungudika kweHEC mumvura anosanganisira matanho matatu: kunyorovesa, kupararira, uye kunyorovesa. Kana upfu hweHEC hwasangana nemvura, chikamu chekunze chinobva chatora mvura nekukasika chobva chawedzera kuita firimu, zvichiteverwa nekunyorovesa zvishoma nezvishoma chikamu chemukati. Mushure mekunyorovesa zvakakwana, mamorekuru marefu anopararira zvakaenzana mumvura, zvichigadzira mhinduro ine chimiro che network chinotadzisa kufamba kwemamorekuru emvura, nokudaro zvichiwedzera kunyorovesa kwemhinduro. Kana kunyungudika kusina kukwana kana kusangana kwakaitika, mamorekuru haana kuvhurwa zvizere, zvichikonzera kunyorovesa kwakaderera.

3. Hukama huripo pakati peKuisa Pfungwa paChinhu uye Kusviba

Muchikamu chidiki chehuwandu hwezvinhu, HEC viscosity inowedzera zvishoma nezvishoma nekuwedzera kwehuwandu hwezvinhu. Kana huwandu hwacho hwasvika pahuwandu hwezvinhu zvakakosha, zvinhu zvakawanda zvinobatanidzwa pakati pemaketani emamorekuru, uye viscosity inowedzera zvakanyanya. Kuwanda kwakawanda kunogona kukonzera kuti mhinduro iratidze mamiriro akafanana negel, zvichideredza kuyerera kwemvura zvakanyanya. Nokudaro, mukushandiswa kwakakodzera, chiyero chakakodzera chinofanira kusarudzwa zvichienderana nezvinodiwa zvesystem kuti uwane viscosity yakatarwa.

4. Mhedzisiro yeMamiriro Ekunze Pakusviba

Tembiricha: Kuwanda kwemvura inonyungudika yeHEC kunoderera nekuwedzera kwekupisa. Izvi zvinokonzerwa nekuti tembiricha yakakwira inowedzera kufamba kwekupisa kwemaketani emamorekuru, zvichideredza kugadzikana kwe hydration layer. pH: Kuwanda kwemvura inonyungudika yeHEC kwakagadzikana mukati me pH range ye2-12, asi mamiriro eacid nealkaline akanyanya anogona kukanganisa maketani emamorekuru, zvichikonzera kudzikira kwesimba.

Munyu Nezvinonyungudutsa: Semushonga usiri weionic polymer, HEC inogara yakagadzikana kana paine ma electrolytes. Zvisinei, kuwanda kwemunyu kana zvinonyungudutsa zve organic kunogona kukanganisa hydration, nokudaro zvichideredza viscosity.

5. Kudzora Kusviba Mumasisitimu Akasiyana-siyana

Indasitiri yeCoatings: HEC inopa hunhu hwakakodzera hwekushandisa viscosity uye kuenzanisa mapendi elatex, zvichidzivirira pigment uye filler set.
Mishonga Yemumba: Mu shampoo nesipo yemaoko, HEC inoita kuti furo rive rakapfava uye rinodzivirira furo.
Zvishandiso zvekuvaka: Mudhaka resimende, HEC inopa kuchengetedza mvura uye kugara kwenguva refu, zvichivandudza mashandiro ekushandisa.
Kuboorera Oiri: HEC inoshandiswa mukuchera mvura kugadzirisa rheology uye kuwedzera kugona kwekutakura machipisi.

Hydroxyethyl cellulose inowedzera zvakanyanya viscosity yesystem kuburikidza nekunyorova, kupindirana, uye kuumbwa kwenetwork yenzvimbo yemamorekuru ayo marefu mumvura. Viscosity haina kungova nechekuita nehuremu hwemamorekuru eHEC, mwero wekutsiva, uye kuwanda, asiwo inokanganiswa nekupisa, pH, uye kuumbwa kwesystem. Mukugadzira formula,kusarudza zvakanaka rudzi rweHECuye chiyero chemushonga chinobvumira kudzora kwakarurama kwehunhu hwerheological hwechigadzirwa, zvichiita kuti pave nemigumisiro yakasiyana-siyana kubva pakutetepa kusvika pakukora.