Zvishandiso zvePolyurethane (PU) zvakakosha mukugadzirwa kwezvinhu zvakasiyana-siyana zvepolyurethane, kusanganisira mafoam emasero akavharwa. Semutengesi anotungamira we polyurethane catalyst, tinonzwisisa basa guru rinoitwa neizvi mukuvandudza hunhu uye mashandisirwo emafoam emasero akavharwa.
Kunzwisisa Foam Yemasero Akavharwa
Foam yemasero akavharwa imhando yefuro apo magasi anovharwa zvachose nezvinhu zvakasimba, zvichigadzira chimiro chakafanana. Kusiyana nefuro remasero akazaruka, uko masero akabatana, furo remasero akavharwa rinoratidzwa nekusimba kwaro kwakanyanya uye kuomarara. Chimiro ichi chakasiyana chinopa hunhu hwakawanda hwakanakira, senge kushoma kwemvura, kukosha kwakanyanya kwekudzivirira, uye simba rakanaka.
Mashandisirwo eFuro reMasero Akavharwa
Foam yemasero akavharwa inoshandiswa zvakanyanya mumaindasitiri akasiyana-siyana nekuda kwehunhu hwayo hunoshandiswa zvakasiyana-siyana. Heano mamwe emashandisirwo ayo makuru:
1. Kudzivirira: Nekuda kwekudzivirira kupisa kwakanyanya uye kunyorova kwakaderera, furo remaseru akavharwa rinoshandiswa zvakanyanya mukudzivirira kupisa muzvivako. Rinobatsira mukuderedza mitengo yesimba nekuchengetedza tembiricha yakafanana muzvivako.
2. Kurongedza: Simba refuro uye hunhu hwaro hwekushongedza zvinoita kuti rive rakakodzera kurongedza zvinhu zvine hunyoro uye zvinokosha. Rinodzivirira zvakanyanya kubva pakukanganiswa nekuzunguzika.
3. Kuvaka: Mukuvaka, furo remaseru akavharwa rinoshandiswa padenga, pasi, uye kudzivirira madziro. Kusimba kwechimiro chayo kunowedzera simba kune zvinhu zvekuvaka, uye hunhu hwayo hunodzivirira kukura kwefungus nefungus.
4. Mota: Foam yemasero akavharwa inoshandiswa muindasitiri yemotokari kudzivirira ruzha uye kudzivirira kupisa. Inowedzera kugadzikana uye kuchengetedzeka kwemotokari nekuderedza ruzha uye kuchengetedza tembiricha.
5. Maritime: Muchikamu chemaritime, furo rema closed cell rinokosheswa nekuda kwekusanyorova kwaro uye kusapinda mumvura. Rinoshandiswa mumidziyo yekuyangarara, mahull echikepe, uye madoko kuitira kuti rigare kwenguva refu uye rakachengeteka mukushandiswa mumvura.
Zvishandiso zvePolyurethane muKugadzirwa kweFoam yeMasero Akavharwa
Kugadzirwa kwefuro repolyurethane foam rinovharwa kunoenderana nekushandiswa kwemacatalysts chaiwo kudzora mwero wekuita kwepolyol nezvikamu zveisocyanate. Kusarudzwa kwecatalyst kunokanganisa zvakanyanya hunhu hwefuro, kusanganisira chimiro charo chemasero, huwandu hwaro, uye mashandiro aro ese.
1. Amine Catalysts: Amine catalysts dzinowanzo shandiswa mukugadzira furo rema closed cell. Dzinokurumidzisa reaction pakati pe isocyanate ne blowing agent, zvichiita kuti pave nechimiro chakafanana chemasero uye density inodiwa. Mienzaniso inosanganisira triethylenediamine (TEDA) uye dimethylcyclohexylamine (DMCHA).
2. Zvishandiso zveMetal Catalysts: Zvishandiso zvesimbi, zvakaita sezvine tin kana bismuth, zvinoshandiswawo kuwedzera maitiro epolymerization. Izvi zvinobatsira mukuita kuti pave nemhinduro yakaringana, zvichikonzera furo rine hunhu hwakafanana uye kugadzikana kwakawedzerwa.
3. Zvinhu Zvinofuridza: Kunyangwe zvisiri zvinhu zvinofuridza mupfungwa yechinyakare, zvinhu zvinofuridza zvakaita semvura kana mahydrofluorocarbon (HFCs) zvinoita basa rakakosha mukugadzira chimiro chemasero akavharwa. Kana zvikabatanidzwa nezvinhu zvakakodzera, zvinoita kuti pave nemasero akavharwa akafanana uye akasimba.
Mhedziso
Semutengesi we polyurethane catalyst, tinoziva kukosha kwekusarudza catalysts dzakakodzera kugadzira foam yemhando yepamusoro ye closed cell. Kuchinja-chinja kwe closed cell foam, pamwe chete nekunyatsogadzirwa nema polyurethane catalysts akasarudzika, kunoita kuti ive chinhu chinokosha mumaindasitiri akasiyana-siyana. Nekunzwisisa mashandisirwo uye maitiro ekugadzira, tinogona kuramba tichigadzira zvinhu zvitsva uye kupa mhinduro dzinosangana nezvinodiwa nevatengi vedu.
Nguva yekutumira: Chikumi-12-2024