Hydroxypropyl methylcellulose (HPMC) inoshandiswa zvakanyanya mumaindasitiri akasiyana siyana kusanganisira kuvaka nekuda kwemabasa ayo akawanda. Mumunda wekugadzira putty, HPMC inoita basa rakakosha mukuvandudza zvivakwa zvakaita sekuita kwekuvaka, kunamatira, kuchengetwa kwemvura uye kuramba kwekuputika.
Putty chinhu chakasiyana-siyana chinoshandiswa zvakanyanya mukuvaka kuzadza makatsemuka, nhanho yepasi uye nekupa yakatsetseka nzvimbo yemadziro uye sirin'i. Kuita kweputty kwakakosha kuti uwane mhedzisiro inodiwa mumapurojekiti ekuvaka, saka zvekuwedzera zvinoshandiswa kusimudzira zvivakwa zvayo. Hydroxypropyl methylcellulose (HPMC) yave chinhu chekuwedzera chakakosha mukuumbwa kweputty nekuda kwekugona kwayo kugadzirisa rheology, kunatsiridza kushanda uye kuwedzera kusimba.
1. Pfupiso yeHydroxypropyl Methylcellulose (HPMC):
HPMC inotorwa kubva ku cellulose, yakagadzirwa nekutsiva mapoka ehydroxyl e cellulose ne methoxy uye hydroxypropyl mapoka. Uku kugadziridzwa kwemakemikari kunopa HPMC yakasarudzika zvivakwa, zvichiita kuti inyungudika zvakanyanya mumvura uye inokwanisa kugadzira yakagadzikana colloidal mhinduro. Mukugadzira putty, HPMC inoita seyakakora, binder, uye inochengeta mvura mumiriri, inokanganisa kutsva uye kuomesa zvinhu zveputty.
2.Recipe manotsi:
Kubatanidza HPMC mune putty formulations kunoda kunyatsotarisisa zvinhu zvakaita senge particle size distribution, viscosity zvinodiwa, kuseta nguva, uye kuenderana nezvimwe zvinowedzera. Kusarudza iyo yakakodzera HPMC giredhi uye kutarisisa kwakakosha kuti uwane yakaringana pakati pekugadzirisa uye michina zvivakwa. Pamusoro pezvo, kudyidzana pakati peHPMC uye zvimwe zvinongedzo zvakaita semafirita, pigment, uye zvinoparadzira zvinofanirwa kuongororwa kuti ive nechokwadi chekuenderana uye nekugonesa kuita.
3. Impact pane processability:
Imwe yemabhenefiti makuru eHPMC mune putty formulations kugona kwayo kuvandudza kushanda nekugadzirisa rheological properties. HPMC inoshanda seyakakora, ichiwedzera viscosity ye putty paste uye kuderedza sagging kana kudonha panguva yekushandisa. Iyo pseudoplastic zvimiro zveHPMC mhinduro inowedzera kufambisira nyore kupararira uye kutsetseka kupedzisa kweiyo putty pamusoro, nekudaro ichiwedzera kushanda kwese uye kushanda mune akasiyana mamiriro ekuvaka.
4. Impact pane mechanical properties:
Kuwedzerwa kweHPMC kunogona kukanganisa zvakanyanya ma mechanic properties ye putty, kusanganisira kunamatira simba, kusimba simba uye flexural simba. HPMC inoumba firimu rakatetepa pamusoro pemafirita particles, anoita seanonamira uye anonatsiridza kubatana kwechiso pakati pezvimedu. Izvi zvinowedzera kubatana mukati me putty matrix uye zvinowedzera kuramba kuputika uye deformation. Uye zvakare, HPMC inobatsira kuumba dense microstructure, nekudaro inovandudza michina zvimiro senge compression simba uye kupfeka kuramba.
5. Wedzera kusimba:
Durability chinhu chakakosha chekushanda kweputty, kunyanya mumashandisirwo ekunze uko kuratidzwa kune zvakatipoteredza zvinhu senge unyoro, UV mwaranzi uye kushanduka kwekushisa kunogona kukanganisa zvinhu nekufamba kwenguva. HPMC inoita basa rakakosha mukusimudzira kusimba kwemaputty nekuvandudza kusamira kwemvura, kuramba kwemamiriro ekunze uye kuramba kukura kwehutachiona. Iyo hydrophilic chimiro cheHPMC inoibvumira kuchengetedza hunyoro mune putty matrix, kudzivirira kupera mvura uye kuderedza njodzi yekuputsika. Mukuwedzera, HPMC inoumba firimu rinodzivirira pamusoro peputty, iyo inodzivirira hunyoro kubva pakupinda uye kurwisa kwemakemikari, nokudaro kuwedzera hupenyu hwebasa reputty.
6. Mafungiro ezvakatipoteredza:
Mumakore achangopfuura, kwave kuri kuwedzera kufarira mukugadzira zvinhu zvekuvaka zvine hushamwari zvinoderedza kukanganisa kwezvakatipoteredza. HPMC inopa mabhenefiti akati wandei mune izvi, sezvo ichitorwa kubva kune zvinogonekazve zviwanikwa uye inoodza pasi pemamiriro akanaka. Kupfuurirazve saka, kushandiswa kweHPMC mune putty maumbirwo kunowedzera kushandiswa kwezvinhu zvakanaka uye kunoderedza kugadzirwa kwemarara, zvichibatsira kuchengetedza simba nezviwanikwa. Nekudaro, iyo yese kutenderera kwehupenyu kukanganisa kweHPMC-ine putty, zvinosanganisira zvinhu zvakaita sekugadzira maitiro, chekufambisa uye kuraswa, zvinofanirwa kutariswa kunyatso ongorora kusimba kwayo.
Hydroxypropyl methylcellulose (HPMC) ndeye multifunctional additive iyo inogona kukanganisa zvakanyanya kuita kwe putty mukuvaka maapplication. Kugona kweHPMC kushandura rheological zvimiro, kunatsiridza kushanda, kusimudzira michina zvivakwa uye kunatsiridza kusimba kunofambisa kuvandudzwa kwemhando yepamusoro putty maumbirwo anokodzera zvakasiyana siyana zvinodiwa. Nekudaro, kuwana kuita kwakaringana kunoda kunyatso kuumbwa, tichifunga zvinhu zvakaita sekusarudzwa kwegiredhi, kugarisana uye zvakatipoteredza. Kumwe kutsvagisa kunodiwa kuti uongorore mashandisirwo matsva eHPMC mune putty mafomati uye kugadzirisa matambudziko arikubuda mumaitiro ekuvaka akasimba.
Nguva yekutumira: Feb-22-2024