HQEE yog qhov tseem ceeb tshaj plaws diol saw txuas rau MDI-based polyurethane elastomers. Piv rau 1, 4-butanediol, cov neeg ua haujlwm ntawm kev lag luam, HQEE-MDI raws li polyurethanes nthuav tawm qhov nyuaj-thaiv yaj kub, superior tensile zog, phua-tear kuj, hardness thiab rigidity, resiliency, tsawg hysteresis, thiab txhim kho thermal aging kev ua tau zoo.
HQEE yog qhov tseem ceeb tshaj plaws diol saw txuas rau MDI-based polyurethane elastomers. Piv rau 1, 4-butanediol, cov neeg ua haujlwm ntawm kev lag luam, HQEE-MDI raws li polyurethanes nthuav tawm qhov nyuaj-thaiv yaj kub, superior tensile zog, phua-tear kuj, hardness thiab rigidity, resiliency, tsawg hysteresis, thiab txhim kho thermal aging kev ua tau zoo.
Cia peb saib tsib qhov tseeb muaj txiaj ntsig txog Gantrade's high-purity HQEE ua cov saw txuas ntxiv hauv polyurethane elastomers. Raws li tus thawj coj hauv kev faib thoob ntiaj teb ntawm HQEE, peb txaus siab rau peb tus kheej ntawm kev muab peb cov neeg siv khoom nrog cov ntaub ntawv tshiab los pab lawv xaiv cov khoom siv tshuaj zoo rau lawv cov khoom specifications.
1. Kev ua tau zoo ntawm HQEE MDI-based polyurethane elastomers
Thaum nws los txog rau kev ua tau zoo hauv ib puag ncig huab, HQEE yog cov saw txuas ntxiv ntawm kev xaiv rau feem ntau cov qauv tsim. Raws li cov saw txuas ntxiv, HQEE hnov mob nrog MDI thiab MDI prepolymers los tsim cov crystalline "thaj-segment" domains uas ua tau zoo microphase cais. Ntau cov kev tshawb fawb tau pom tias cov khoom ntawm polyurethane yog nyob ntawm cov yam ntxwv thiab kev ua tiav ntawm cov txheej txheem nyuaj no.
HQEE-MDI yeej sawv tawm ntawm kev sib tw nrog rau kev ua tiav cov khoom lag luam tshwj xeeb hauv qab no:
Superior elevated kub thiab tshav kub-aging zog
Hardness thiab rigidity
Tsawg kub buildup los yog hysteresis nyob rau hauv dynamic flex tej yam kev mob
Zoo heev resiliency thiab rebound yam ntxwv
Tear lub zog thiab sib cais-ua kua muag kuj
Txhim kho qhov kub thiab txias qis zog vim muaj kev sib cais microphase zoo
Raws li qhov ntsuas kub siab, HQEE MDI elastomers yog qhov kev nyiam tshaj plaws
Lub melting kub ntawm HQEE-MDI nyuaj domain yog elevated nyob rau hauv polyurethane elastomers piv rau polyurethanes uas yog chain-extended nrog lwm yam diols. Raws li cov txiaj ntsig ntawm DSC, HQEE txuas ntxiv ua rau 30 degree siab dua hard-segment melting kub thiab ntau dua melting enthalpy (the degree ntawm tshav kub yuav tsum tau yaj lub nyuaj ntu) qhia superior elevated kub zog ntawm HQEE-MDI piv rau BDO-MDI elastomers.
HQEE-raws li tshuab qhia ntau dua theem kev sib cais thiab kev txiav txim siab dua ntawm hydrogen bonding nyob rau hauv lub hard domain ntawm polyurethanes. Cov qauv uas muaj ntxhiab tsw zoo txhawb nqa cov ntu ntu ntim thiab sib luag -OCH2CH2- ntu hauv HQEE ua kom muaj kev sib txuas ntawm cov hydrogen nrog cov urethane txuas. Cov kev sib sau ua ke no ua tau zoo pab txhawb nqa cov khoom ntim nyuaj, ua rau kom paub meej microphase cais morphologies hauv polyurethane.