Khoom piav qhia
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). Polyethers kuj tseem muaj qis viscosity thiab lub ntiajteb txawj nqus.
PTMEG polyurethane resin tuaj yeem siv los tsim cov pas nrig, cov menyuam, lub log caser, lub nplhaib sib khi, lub phaj phaj thiab lwm yam polyurethane elastomers.
PTMEG raws li polyurethane prepolymer kawg cov khoom muaj qhov zoo abrasion tsis kam, dej tsis kam, pov thawj kab mob, zoo txhua yam khoom, xim regualting los ntawm kev ntxiv pigment.
Qhov sib ntxiv ntawm cov khoom me me ntawm hydroxyl-functional polyoxyalkylene monol rau PTMEG-derived isocyanate-terminated prepolymer thaum lub sij hawm prepolymer npaj ua rau kev npaj ntawm glycol txuas polyurethane elastomer uas nthuav tawm kev txhim kho lub cev, tshwj xeeb tshaj yog elongation, tensile zog, tsis muaj zog tear. cuam tshuam elastomer hardness.
Txheej txheem txheej txheem
Prepolymer ntawm 75 ~ 85 degree preheating, tom qab nqus degassing, yaj MOCA zoo homogeneous sib tov, deaeration, pouring, molding, vulcanization molding, stripping, vulcanization.
Cia
Khaws rau hauv qhov chaw txias thiab qhuav thiab siv kom sai li sai tau tom qab qhib;
Yog tias nws tsis tuaj yeem siv rau ib zaug, nws yuav tsum tau ntim nrog nitrogen;
Qhov thib ob qhib yuav tsum tau siv rau defoaming, thiab thawj lub sij hawm cia yog rau lub hlis.
Ntim
20kg lossis 200kg hlau nruas
|
Hom |
qw 8319 |
qw 8320 |
qw 8321 |
qw 8322 |
qw 8323 |
qw 8324 |
qw 8325 |
|
NCO content/% |
3.0±1.0 |
3.5±0.1 |
4.2±0.2 |
6.2±0.2 |
7.0±0.2 |
8.6±0.2 |
9.65±0.2 |
|
Qhov tshwm sim ntawm 20 degree |
dawb khoom |
||||||
|
MOCA / g (100g prepolymer) |
8.8 |
10 |
12.1 |
18 |
20.5 |
25 |
27.5 |
|
Lub sijhawm gel / min |
12 |
11 |
10 |
6 |
4 |
4 |
2 |
|
hardness (ntaub A) |
82±2 |
85±2 |
90±1 |
95±1 |
97±1 |
65D |
75D |
|
100% Modulus / MPa |
4.3 |
5.4 |
7.5 |
12.8 |
18.5 |
26.9 |
32.6 |
|
Tensile zog / MPa |
24 |
27 |
33 |
48 |
49 |
44 |
54 |
|
Elongation ntawm tawg /% |
610 |
550 |
500 |
350 |
320 |
250 |
220 |
|
Tear zog (tsis muaj nick / KN / m) |
55 |
65 |
78 |
95 |
111 |
185 |
160 |
|
Kev puas tsuaj /mm³ |
50 |
39 |
39 |
38 |
52 |
72 |
70 |
Cim npe nrov: PTMEG Raws li Polyurethane Prepolymer, Tuam Tshoj PTMEG Raws li Polyurethane Prepolymer manufacturers, lwm tus neeg, Hoobkas
