Mmiri karama ọkwa PET resin (PET)
Okwu Mmalite ngwaahịa
Mmiri karama ọkwa polyester ibe bụ adabara na-eme ka nkwakọ ngwaahịa maka mmiri dị ọcha, eke ịnweta mmiri, distilled mmiri, mmiri ọṅụṅụ, flavoring na swiiti containers, etemeete si karama na PET mpempe akwụkwọ ihe wdg.
Ụdị ngwaahịa ahụ nwere ọdịnaya ọla dị arọ dị ala, ọdịnaya acetaldehyde dị ala, uru agba dị mma, viscosity kwụsiri ike.Na a pụrụ iche usoro uzommeputa na elu mmepụta technology, ngwaahịa nwere magburu onwe nhazi atụmatụ, ala nhazi okpomọkụ, obosara akporo na nhazi, magburu onwe nghọta na elu na okokụre ngwaahịa ọnụego.N'ime karama, ngwaahịa ahụ nwere obere mmebi na ọdịnaya dị ala nke acetaldehyde.Ka ị na-ahụ maka nchekwa na ịdị ọcha, ọ nwere ike idobe uto pụrụ iche nke mmiri a na-eme ka ọ dị ọcha, mmiri ịnweta mmiri na mmiri distilled.
Nka na ụzụ
| Ttem | Nkeji | Index | Usoro ule | |
| Viscosity dị n'ime (ahia nke mba ọzọ) | dL/g | 0.800± 0.02 | GB17931 | |
| Ọdịnaya nke acetaldehyde | ppm | <1 | chromatography gas | |
| Uru agba | L | - | >82 | HunterLab |
| b | - | <1 | HunterLab | |
| Otu njedebe Carboxyl | mmol/kg | <30 | Photometric titration | |
| Ebe mgbaze | Celsius C | 243 ± 2 | DSC | |
| Ọdịnaya mmiri | wt% | <0.2 | Usoro ibu | |
| Uzuzu ntụ ntụ | PPm | <100 | Usoro ibu | |
| Wt.nke 100 ibe | g | 1.55± 0.10 | Usoro ibu | |
Ụdị nhazi ọnọdụ
ihicha dị mkpa tupu nhazi agbaze iji gbochie resin si hydrolysis.Ọnọdụ ihicha a na-ahụkarị bụ ikuku ikuku nke 160-180 ° C, oge obibi awa 4-6, ebe igirigi dị n'okpuru -40 *C.
Okpomọkụ gbọmgbọm dị ka 275-293 Celsius.
