Polypropylene glycol (PPG)bụ polymer na-abụghị ionic enwetara site na polymerization na-emepe mgbanaka nke propylene oxide. Ọ nwere ihe ndị bụ isi dị ka solubility mmiri na-agbanwe agbanwe, nnukwu viscosity nso, nkwụsi ike kemịkalụ siri ike, na nsi dị ala. Ngwa ya gbasara ọtụtụ ụlọ ọrụ, gụnyere kemịkalụ, ọgwụ, kemịkalụ kwa ụbọchị, nri, na nrụpụta ụlọ ọrụ. PPG nke ịdị arọ molekụla dị iche iche (nke sitere na 200 ruo ihe karịrị 10,000) na-egosipụta nnukwu ọdịiche ọrụ. PPG dị arọ dị obere (dị ka PPG-200 na 400) bụ ihe na-agbaze mmiri ma na-ejikarị eme ihe dị ka ihe mgbaze na plasticizers. PPG nke ọkara na nke dị elu (dị ka PPG-1000 na 2000) bụ mmanụ-soluble ma ọ bụ ọkara siri ike ma na-ejikarị eme emulsification na njikọ elastomer. Nke a bụ nyocha zuru oke nke mpaghara ngwa ya:
1. Polyurethane (PU) Ụlọ ọrụ: Otu n'ime ihe ndị dị na Core Raw Materials
PPG bụ isi ihe akụrụngwa polyol maka imepụta ihe polyurethane. Site n'imeghachi omume na isocyanates (dị ka MDI na TDI) na ijikọta ya na ndị na-ebu ibu, ọ nwere ike ịmepụta ụdị ngwaahịa PU dị iche iche, na-ekpuchi ụdị ụfụfụ dị nro na nke siri ike:
Polyurethane elastomers: PPG-1000-4000 na-ejikarị eme nkwadebe nke polyurethane thermoplastic (TPU) na nkedo polyurethane elastomer (CPU). A na-eji elastomers ndị a na-akpụ akpụ akpụkpọ ụkwụ (dị ka ịkwanye midsoles maka akpụkpọ ụkwụ egwuregwu), akara igwe, eriri ebu, na catheters ahụike (nke nwere ezigbo biocompatibility). Ha na-enye nguzogide abrasion, mgbochi anya mmiri, na mgbanwe.
Ihe mkpuchi polyurethane / adhesives: PPG na-eme ka mgbanwe ahụ dịkwuo mma, nkwụsị mmiri, na adhesion nke mkpuchi ma jiri ya mee ihe na-emepụta ihe OEM akpaaka, agba mgbochi corrosion ụlọ ọrụ, na mkpuchi osisi. Na adhesives, ọ na-eme ka ike nkekọ na nguzogide ihu igwe dịkwuo mma, na-eme ka ọ dị mma maka njikọta ọla, plastik, akpụkpọ anụ na ihe ndị ọzọ.
2. Kemịkalụ kwa ụbọchị na nlekọta onwe onye: mgbakwunye na-arụ ọrụ
A na-eji PPG, n'ihi ịdị nwayọọ ya, ihe na-eme emulsifying, na ihe na-eme ka mmiri dị nro, na-ejikarị na nlekọta anụ ahụ, ihe ịchọ mma, ncha, na ngwaahịa ndị ọzọ. Ngwaahịa dị arọ molekụla dị iche iche nwere ọrụ dị iche iche:
Emulsifiers na Solubilizers: PPG dị arọ molecular arọ (dị ka PPG-600 na PPG-1000) na-ejikọta ya na fatty acids na esters dị ka emulsifier nonionic na ude, lotions, shampoos, na usoro ndị ọzọ, na-eme ka usoro mmanụ-mmiri guzosie ike na igbochi nkewa. Enwere ike iji PPG dị arọ molekụla dị ala (dịka PPG-200) dị ka ihe solubilizer, na-enyere aka igbari ihe ndị na-agbaze mmanụ dị ka ihe na-esi ísì ụtọ na mmanụ dị mkpa na nhazi mmiri.
Moisturizers na Emollients: PPG-400 na PPG-600 na-enye mmetụta dị nro na-adịghị mma na mmetụta na-enye ume ọhụrụ, na-enweghị isi. Ha nwere ike dochie ụfọdụ glycerin na toners na serum, na-eme ka mmịpụta ngwaahịa dịkwuo mma. Na conditioners, ha nwere ike ibelata ọkụ eletrik ma welie ntutu ire ụtọ. Ihe mgbakwunye ngwaahịa na-ehicha: N'ime mmiri ịsa ahụ na ncha aka, PPG nwere ike ịhazigharị viscosity usoro, kwalite nkwụsi ike nke ụfụfụ, ma belata iwe nke ndị surfactants. Na ncha eze, ọ na-arụ ọrụ dị ka ihe na-eme ka ọkpụkpụ na-eme ka ọ dị arọ, na-egbochi mado ahụ site na ihicha na ịgbawa.
3. Ngwa ọgwụ na ọgwụ: Ngwa nchekwa dị elu
N'ihi nsi ya dị ala yana ezigbo bioocompatibility (dabere na USP, EP, na ụkpụrụ ọgwụ ndị ọzọ), a na-eji PPG eme ihe n'ụdị ọgwụ na akụrụngwa ọgwụ.
Ndị na-ebu ọgwụ na ihe mgbaze: PPG dị arọ molekụla dị ala (dị ka PPG-200 na PPG-400) bụ ihe mgbaze dị mma maka ọgwụ ndị na-adịghị edozi ahụ ma enwere ike iji ya na nkwusioru ọnụ na injectables (na-achọ njikwa ịdị ọcha siri ike na iwepụ adịghị ọcha), na-eme ka ike ọgwụ na-edozi ahụ na bioavailability. Ọzọkwa, enwere ike iji PPG dị ka ihe mgbakwasị ụkwụ iji melite ntọhapụ ọgwụ.
Mgbanwe Ihe Nlekọta Ahụike: Na ihe ndị polyurethane ahụike (dị ka arịa ọbara artificial, valves obi, na urinary catheters), PPG nwere ike ịhazigharị hydrophilicity na biocompatibility nke ihe ahụ, na-ebelata nzaghachi mgbochi nke anụ ahụ ma na-emeziwanye mgbanwe nke ihe ahụ na nguzogide corrosion ọbara. Ngwakọta ọgwụ: Enwere ike iji PPG dị ka ihe ndabere na mmanụ na ude iji kwalite ntinye ọgwụ site na akpụkpọ ahụ ma dabara maka ọgwụ ndị dị n'elu (dị ka ọgwụ nje na-egbu egbu na steroid).
4. Lubrication ụlọ ọrụ na igwe: Ihe mmanye na-arụ ọrụ dị elu
PPG na-enye mmanu mmanu, ihe mgbochi iyi, yana nguzogide dị elu na nke dị ala. Ọ nwekwara ndakọrịta siri ike na mmanụ ịnweta na ihe mgbakwunye, na-eme ka ọ bụrụ isi akụrụngwa maka mmanu sịntetik.
Hydraulic na Gear Mmanụ: Ọkara na elu-molecular arọ PPG (dị ka PPG-1000 na 2000) nwere ike iji mee ka mgbochi-eyi hydraulic mmiri mmiri kwesịrị ekwesị maka elu-nrụgide hydraulic usoro na-ewu ígwè na ngwá ọrụ igwe. Ha na-edobe mmiri dị mma ọbụna na obere okpomọkụ. Na mmanụ gia, ha na-ebuli ihe mgbochi na mgbochi iyi, na-agbatị ndụ gia.
Fluids Metalworking Fluids: Enwere ike iji PPG mee ihe dị ka mgbakwunye n'ịrụ ọrụ igwe na igwe na-egweri, na-enye mmanu mmanu, nju oyi na mgbochi nchara, na-ebelata iyi ngwá ọrụ na ịkwalite izi ezi nke igwe. Ọ bụkwa ihe na-emebi emebi (ụfọdụ PPGs emezigharịrị na-egbo mkpa nke mmiri igbuchapụ gburugburu ebe obibi). Ọpụrụiche Lubricants: Lubricants eji na elu okpomọkụ, elu-nrụgide, ma ọ bụ pụrụ iche media (dị ka acidic na alkaline gburugburu), dị ka aerospace ngwá na kemịkalụ nfuli na valves, nwere ike dochie omenala ịnweta mmanụ ma melite akụrụngwa ntụkwasị obi.
5. Nhazi nri: Ihe mgbakwunye nri-ọkwa
A na-eji PPG ọkwa nri (FDA-compliant) nke ọma maka emulsification, defoaming, na moisturize na nhazi nri:
Emulsification na Nkwụsi ike: Na ngwaahịa mmiri ara ehi (dị ka ice cream na ude) na ngwaahịa esi nri (dị ka achịcha na achịcha), PPG na-eme ihe dị ka emulsifier iji gbochie nkewa mmanụ ma melite ọdịdị ọdịdị ngwaahịa na uto. N'ihe ọṅụṅụ, ọ na-eme ka ekpomeekpo na pigment guzosie ike iji gbochie nkewa.
Defoamer: N'ime usoro ịgba ụka nri (dị ka biya na soy sauce brewing) na nhazi ihe ọṅụṅụ, PPG na-arụ ọrụ dị ka onye na-eme mkpọtụ iji gbochie ụfụfụ ma melite arụmọrụ mmepụta na-enweghị emetụta ekpomeekpo.
Humectant: N'ime achịcha achịcha na swiiti, PPG na-arụ ọrụ dị ka mmiri mmiri iji gbochie ihicha na ịgbawa, na-agbatị ndụ shelf.
6. Mpaghara ndị ọzọ: Ngbanwe ọrụ na ngwa inyeaka
Mkpuchi na Ink: Na mgbakwunye na mkpuchi polyurethane, PPG nwere ike iji mee ihe dị ka ihe na-agbanwe maka alkyd na epoxy resins, na-eme ka mgbanwe ha dịkwuo mma, nhazi ọkwa, na nkwụsị mmiri. N'ime ink, ọ nwere ike ịhazigharị viscosity wee kwalite ịdị nbipụta (dịka ọmụmaatụ, dechapụ na ink gravure).
Auxiliaries Textile: Ejiri ya dị ka ihe mgbochi antistatic na softener maka textiles, ọ na-ebelata nrụpụta static ma kwalite ịdị nro. Na agba agba na imecha, enwere ike iji ya dị ka onye na-eme ka ọ dị larịị iji kwalite mgbasa nke agba ma kwalite ịdị n'otu.
Defoamers na Demulsifiers: Na mmepụta kemịkalụ (dịka ọmụmaatụ, ịde akwụkwọ na ọgwụgwọ mmiri), enwere ike iji PPG mee ihe dị ka ihe nkwụsịtụ iji gbochie ụfụfụ n'oge mmepụta. Na mmepụta mmanụ, enwere ike iji ya dị ka demulsifier iji nyere aka kewaa mmanụ cru na mmiri, si otú ahụ na-abawanye mgbake mmanụ. Isi ngwa ngwa: Ngwa nke PPG chọrọ nlezianya na-atụle molekụla arọ (eg, obere molekụla arọ na-elekwasị anya solvents na moisturizing, mgbe ọkara- na elu molekul arọ na-elekwasị anya emulsification na lubrication) na ịdị ọcha ọkwa (elu-ọcha ngwaahịa na-ahọrọ na nri na ọgwụ ụlọ ọrụ, mgbe ọkọlọtọ akara ule nwere ike họrọ dabere na ulo oru mkpa). Ụfọdụ ngwa na-achọkwa mgbanwe (dịka ọmụmaatụ, grafting ma ọ bụ cross-linking) iji kwalite arụmọrụ (dịka ọmụmaatụ, ịkwalite nguzogide okpomọkụ na ire ọkụ). Site n'ịchọwanye maka nchekwa gburugburu ebe obibi na ịrụ ọrụ dị elu, mpaghara ngwa nke PPG gbanwetụrụ (dịka ọmụmaatụ, PPG dabere na biodegradable PPG) na-agbasawanye.
Oge nzipu: Ọkt-29-2025