Polytetramethylene Ether Glycol (PTMEG), kuj paub tias yog Polytetrahydrofuran (PolyTHF), yog cov khoom siv dawb. Polytetramethylene Ether Glycol (PTMEG) yuav tig mus rau hauv cov kua pob tshab thaum qhov kub siab tshaj qhov kub ntawm chav tsev. Polytetramethylene Ether Glycol (PTMEG) dissolves yooj yim hauv cawv, esters, ketones, aromatic hydrocarbons thiab hydrocarbon chlorides. Txawm li cas los xij, Polytetramethylene Ether Glycol (PTMEG) tsis yaj hauv dej lossis roj hydrocarbons.
PTMEG polyol muaj nyob rau hauv ntau qhov hnyav molecular: PTMEG 250, PTMEG 650, PTMEG 1000, PTMEG 1400, PTMEG 1800, PTMEG 2000, thiab PTMEG 3000. Txawm li cas los xij, feem ntau qib ntawm PTMEG siv nyob rau hauv daim ntawv polyurethane thiab TMEG 10TMEG. 2000. PTMEG yog tsim rau siv los tsim cov thermoset thiab thermoplastic polyurethane elastomers thiab feem ntau siv rau hauv polyurethane adhesives.
PTMEG-based polyurethanes nthuav tawm cov yam ntxwv hauv qab no:
Superior tsis kam rau hydrolytic cleavage
Kev ua tau zoo heev thiab khaws cov khoom ntiag tug ntawm qhov kub thiab txias
High resiliency thiab rebound khoom
Zoo heev mechanical thiab dynamic zog, nrog rau tsawg hysteresis
Qhov zoo tshaj plaws impingement abrasion kuj
Cov yam ntxwv ua haujlwm zoo
PTMEG ua ib qho kev ua tau zoo polyol muaj peev xwm tsim cov polyurethane elastomers hauv ntau cov lus qhia zoo. PTMEG yuav txhim khu kev ua tau zoo ntawm polyurethane elastomer hais txog kev yoog raws, cov khoom muaj zog, kev ruaj ntseg hydrolytic, thiab kev puas tsuaj.
PTMEG raws li polyurethane prepolymer yog qib siab dua ntawm Polyether raws li prepolymer.PTMEG raws li polyurethane prepolymer raug pom zoo rau cov ntawv thov uas qhov chaw muaj kev ntxhov siab, thiab lwm yam.This polyurethane resin incurs qis cua sov build-up.This polyurethane prepolymer kuj muaj qhov zoo nyob rau hauv siab resilience, tsawg Kev ua haujlwm kub thiab tiv thaiv dej tawm tsam (hydrolysis).
Daim ntawv thov
-Polyurethane Fiber (Spandex): Swimsuits, ris tsho hauv qab, sportswear, stocking thiab lwm yam.
-Polyuretane Elastomer (Thermoplastic elastomer, thermosetting elastomer): Automotive qhov chaw, cable thiab hlau, hose thiab tubing, log thiab rollers, khoom log tsheb thiab lwm yam.
- Synthetic leathers: khau, hnab thiab lwm yam.
- Xim, txheej tus neeg sawv cev: dej resistant txheej thiab lwm yam.
-Adhesives, sealants: nplaum rau kev lag luam thiab tsev.
Poperties
| Yam khoom | QAB 250 | qw 650 | BQ1000 | QAB 1400 | QAB 1800 | BQ 2000 | QAB 3000 |
| Molecular hnyav | 250±25 | 650±25 | 1000±50 | 1400±50 | 1800±50 | 2000±50 | 3000±100 |
| Viscosity (40 degree cp) | 50 | 205 | 270 | 660 | 1215 | 1225 | 1350 |
| Index ntawm refraction (nD25) | 1.462 | 1.462 | 1.463 | 1.463 | 1.464 | 1.464 | 1.464 |
| Melting point (Tm, degree) | -5 | 19 | 24 | 26 | 28 | 32 | 35 |
| Hydroxyl (mgKOH/g) | 408.0-498.7 | 166.2-179.5 | 106.9-118.1 | 77.4-83.1 | 60.6-64.1 | 54.7-57.5 | 36.2-38.7 |
| Cov ntsiab lus dej (wt%, ppm) | 250 max | 200 max | 200 max | 200 max | 150 max | 200 max | 200 max |
Ntim thiab khaws cia
PTMEG Polyol yuav tsum muab khaws cia rau hauv lub thawv kaw tag, kaw nrog cov nitrogen qhuav thiab yuav tsum muab cia rau hauv qhov chaw txias, qhuav thiab qhov cua zoo, thiab kom deb ntawm qhov hluav taws kub, qhov hluav taws kub thiab liab qab nplaim taws.
PTMEG polyol ua rau kub kub heev. Yog tias ntes tau hluav taws, tshuaj tsuag dej, cawv ua npuas dej, cov khoom siv tshuaj qhuav lossis cov pa roj carbon dioxide tua hluav taws yuav tsum tau siv los tua hluav taws.
Cim npe nrov: Tuam Tshoj molecular hnyav 2000 ptmeg polytetramethylene ether glycol, Tuam Tshoj molecular hnyav 2000 ptmeg polytetramethylene ether glycol manufacturers, lwm tus, Hoobkas
