Latex pendi (inozivikanwawo sependi yemvura) imhando yependi ine mvura se solvent, iyo inonyanya kushandiswa pakushongedza nekudzivirira madziro, sirin'i uye mamwe maficha. Iyo fomula yependi ye latex inowanzo ine polymer emulsion, pigment, filler, additives uye zvimwe zvinongedzo. Pakati pavo,hydroxyethyl cellulose (HEC)yakakosha mukobvu uye inoshandiswa zvakanyanya mupende ye latex. HEC haigoni kungovandudza viscosity uye rheology yepende, asiwo kuvandudza kushanda kwefirimu yepende.
1. Hunhu hunokosha hweHEC
HEC musanganiswa wemvura unonyungudika wepolymer wakagadziridzwa kubva kune cellulose ine yakanaka gobvu, kumiswa uye firimu-kugadzira zvinhu. Yayo molecular cheni ine hydroxyethyl mapoka, ayo anoigonesa kunyungudika mumvura uye kugadzira yakakwira-viscosity mhinduro. HEC ine yakasimba hydrophilicity, iyo inoita kuti iite basa mukudzikamisa kumiswa, kugadzirisa rheology uye kugadzirisa firimu kuita mulatex pendi.
2. Kudyidzana pakati peHEC uye polymer emulsion
Iyo yakakosha chikamu che latex pendi ndeye polymer emulsion (yakadai se acrylic acid kana ethylene-vinyl acetate copolymer emulsion), iyo inoumba huru skeleton yefirimu repende. Kudyidzana pakati peAnxinCel®HEC uye polymer emulsion inonyanya kuratidzwa mune zvinotevera zvinhu:
Yakavandudzwa kugadzikana: HEC, seyakakora, inogona kuwedzera viscosity yepende ye latex uye kubatsira kudzikamisa emulsion particles. Kunyanya mu-low-concentration polymer emulsions, kuwedzerwa kweHEC kunogona kuderedza sedimentation ye emulsion particles uye kuvandudza kugadzikana kwekuchengetedza kwepende.
Rheological regulation: HEC inogona kugadzirisa rheological zvimiro zve latex pendi, kuitira kuti ive nekuita kurinani kwekuputira panguva yekuvaka. Semuenzaniso, panguva yekupenda, HEC inogona kuvandudza iyo inotsvedza pfuma yepende uye kudzivirira kudonha kana kudonha kwejasi. Uye zvakare, HEC inogona zvakare kudzora kudzoreredza kwepende uye kuwedzera kufanana kwefirimu repende.
Kugonesa kwekuita kwekuvhara: Kuwedzerwa kweHEC kunogona kuvandudza kuchinjika, kupenya uye kukwenya kuramba kwejasi. Iyo molecular chimiro cheHEC inogona kudyidzana neiyo polymer emulsion kuwedzera chimiro chese chependi firimu, ichiita kuti ive yakaoma uye nekudaro ichivandudza kusimba kwayo.
3. Kudyidzana pakati peHEC uye pigments
Pigment mu latex pendi kazhinji inosanganisira inorganic pigments (senge titanium dioxide, mica powder, etc.) uye organic pigments. Kudyidzana pakati peHEC uye pigments kunonyanya kuratidzwa mune zvinotevera zvinhu:
Pigment dispersion: Iko kukora mhedzisiro yeHEC inowedzera viscosity yependi yelatex, inogona kuparadzira zvirinani pigment particles uye kudzivirira pigment aggregation kana kunaya. Kunyanya kune mamwe mapigment particles akanaka, iyo polymer chimiro cheHEC inogona kuputira pamusoro peiyo pigment kudzivirira kuungana kwe pigment particles, nokudaro kuvandudza kupararira kwe pigment uye kufanana kwepende.
Kusunga simba pakati pe pigment uye coating film:HECmamorekuru anogona kuburitsa adsorption yemuviri kana kemikari kuita nepamusoro pe pigment, kuwedzera simba rekusunga pakati pe pigment neiyo firimu rekuputira, uye kudzivirira chiitiko chekudururwa kwepigment kana kupera pamusoro peiyo firimu rekuputira. Kunyanya mu-high-performance latex pendi, HEC inogona kunyatso kuvandudza kupikisa kwemamiriro ekunze uye UV kuramba kwepigment uye kuwedzera hupenyu hwebasa rejasi.
4. Kudyidzana pakati peHEC uye fillers
Mamwe mafiritsi (akadai se calcium carbonate, talcum powder, silicate minerals, nezvimwewo) anowanzowedzerwa kune latex pendi kuti avandudze rheology yepende, kuvandudza simba rekuhwanda refirimu rekuvhara uye kuwedzera mari-inoshanda yepende. Kudyidzana pakati peHEC nemafiller kunoratidzwa mune zvinotevera zvinhu:
Kumiswa kwemafirita: HEC inogona kuchengetedza mafirita akawedzerwa kune latex pendi mune yunifomu yekuparadzira mamiriro kuburikidza nekuita kwayo kukora, kudzivirira mafiritsi kuti asagadzika. Kune mafirita ane hukuru hukuru hukuru, iyo thickening mhedzisiro yeHEC inonyanya kukosha, iyo inogona kunyatso chengetedza kugadzikana kwepende.
Kupenya uye kubata kwejasi: Kuwedzerwa kwemafiritsi kunowanzo kukanganisa kupenya uye kubata kwejasi. AnxinCel®HEC inogona kuvandudza kutaridzika kwekuita kwejasi nekugadzirisa kugovera uye kurongeka kwemafirita. Semuenzaniso, kupararira kweyunifomu yezvimedu zvekuzadza kunobatsira kuderedza kushata kwepamusoro pekuvhara uye kuvandudza kupenya uye kupenya kwefirimu repende.
5. Kudyidzana pakati peHEC nezvimwe zvinowedzera
Iyo latex pendi formula inosanganisirawo zvimwe zvinowedzera, senge defoamers, preservatives, wetting agents, etc. Izvi zvinowedzera zvinogona kupindirana neHEC apo zvichivandudza kushanda kwepende:
Kudyidzana pakati pe defoamers neHEC: Basa re defoamers nderokuderedza mabhubhu kana furo mupende, uye yakakwirira viscosity maitiro eHEC anogona kukanganisa maitiro e defoamers. Yakawandisa HEC inogona kuita kuti zviome kuti defoamer ibvise zvachose furo, zvichikanganisa kunaka kwependi. Nokudaro, huwandu hweHEC hwakawedzerwa hunoda kurongeka nehuwandu hwe defoamer kuti uwane zvakanakisisa.
Kudyidzana pakati pekuchengetedza uye HEC: Basa rekuchengetedza nderokudzivirira kukura kwehutachiona mupende uye kuwedzera nguva yekuchengetedza yepende. Seyakasikwa polymer, HEC's molecular structure inogona kupindirana nemamwe mapreservatives, inokanganisa anti-corrosion effect. Naizvozvo, zvakakosha kuti usarudze chinochengetedza chinowirirana neHEC.
Basa reHECmu latex pendi haisi kungokora chete, asi kusangana kwayo ne polymer emulsions, pigments, fillers uye zvimwe zvinowedzera pamwe chete zvinogadzirisa kushanda kwepende yelatex. AnxinCel®HEC inogona kuvandudza rheological zvimiro zve latex pendi, kuvandudza dispersibility ye pigment uye mafirita, uye kuwedzera ma mechanical zvivakwa uye kusimba kwejasi. Uye zvakare, iyo synergistic mhedzisiro yeHEC uye zvimwe zvinowedzera zvinewo kukosha kwakakosha pakugadzikana kwekuchengetedza, kuita kwekuvaka uye kupfekedza kutaridzika kwependi yelatex. Nokudaro, mukugadzirwa kwelatex pendi formula, kusarudzwa kunonzwisisika kweHEC rudzi uye kuwedzera kwehuwandu uye kuenzana kwekubatana kwayo nezvimwe zvinoshandiswa ndicho chinhu chikuru chekuvandudza kushanda kwese kwepende ye latex.
Nguva yekutumira: Zvita-28-2024