Kub yaj siab-rhiab nplaum nplaum (HMPSA) feem ntau muab faib ua ntau hom raws li lawv cov muaj pes tsawg leeg. Nov yog cov lus txhais ntawm cov ntawv uas tau muab ua lus Askiv:
Thermoplastic Elastomer HMPSA
Thermoplastic elastomer HMPSA yog tsim los ntawm cov thermoplastic elastomers, tackifying resins, plasticizers, antioxidants, thiab fillers, melted thiab blended ua ke.
Cov thermoplastic elastomer feem ntau yog hais txog styrene block copolymer, xws li styrene-butadiene block copolymer (SBS) thiab styrene-isoprene block copolymer (SIS). Muaj dav thiab tsim nyog tus nqi, lawv muaj cov khoom siv thermoplastic ntawm qhov kub thiab txias zoo li roj hmab elasticity ntawm chav tsev kub.
Piv nrog rau lwm yam kub yaj siab-rhiab nplaum nplaum, thermoplastic elastomer HMPSA muaj qhov zoo xws li kev sib koom ua ke zoo, tsis tshua muaj viscosity, muaj zog adhesion, thiab cov txheej txheem ua tiav. Txawm li cas los xij, SBS thiab SIS cov molecules muaj qhov polarity tsawg thiab muaj cov ntawv cog lus tsis txaus ntseeg, ua rau qee qhov tsis zoo xws li tsis muaj zog adhesion rau cov ntaub ntawv polar, tsis zoo rau cov roj thiab cov kuab tshuaj, thiab tsis txaus thermal thiab oxidative kev laus. Cov kws tshawb fawb tau hloov kho tsis tu ncua SIS-raws li HMPSA los ntawm ntau txoj hauv kev, suav nrog SIS thermoplastic elastomer hloov kho, tackifying resin hloov kho, thiab lub cev sib xyaw.
Acrylic HMPSA
Acrylic HMPSA muaj cov monomers, nrog rau cov monomers saj zawg zog, nruj monomers, thiab ua haujlwm pab pawg monomers. Saj zawg zog monomers muab cov khoom nplaum nrog lub iav tsis tshua muaj kev hloov pauv kub (Tg), thaum cov monomers nruj nrog Tg siab ua rau muaj zog nplaum thiab cohesion, txhim kho dej tsis kam thiab pob tshab. Cov pab pawg ua haujlwm monomers muaj ob daim ntawv cog lus uas pab txhawb kev sib txuas sib txuas, txhawb nqa polymerization thiab nrawm cov tshuaj tiv thaiv yam tsis tas yuav tsum tau tackifying resins thiab antioxidants. Piv nrog rau lwm yam HMPSA, acrylic HMPSA muaj kev yooj yim hauv kev tsim thiab huab cua zoo heev thiab kub ua haujlwm yam tsis muaj kev siv tackifying resins thiab antioxidants.
Silicone-based HMPSA
Silicone-based HMPSA feem ntau yog cov organic silicone roj hmab, silicone resin, thiab qee yam additives. Nrog rau daim ntawv thov dav dav, nws tsis yog tsuas yog nthuav tawm cov khoom zoo ntawm HMPSA tab sis kuj tseem ua haujlwm zoo rau qhov kub thiab txias, hluav taws xob, thiab tshuaj lom neeg. Polymers siv rau silicone-based HMPSA suav nrog polydimethylsiloxane, polymethylphenylsiloxane, polydimethyldiphenylsiloxane, thiab ntau yam siloxane polymers.
Amorphous Polyolefin HMPSA
Amorphous polyolefin HMPSA yog qhov tseem ceeb ntawm homopolymer uas tsis muaj molecular-yuag los yog copolymer ntawm propylene, ethylene, butene, thiab hexene tsim los ntawm low-pressure copolymerization. HMPSA npaj los ntawm amorphous polyolefins muaj qhov zoo xws li tus nqi qis, tsis tshua muaj softening point, tsawg yaj viscosity, zoo heev tiv taus kub thiab tsis kub, ncua sij hawm cia, thiab muaj zog adhesion rau hlau, ntoo, ntawv, polyethylene, thiab polypropylene.
Roj Hmab hom HMPSA
Nyob rau hauv xyoo tas los no, cov roj hmab-hom HMPSA tau tsim, feem ntau muaj cov roj hmab (xws li cov roj hmab ntuj thiab hluavtaws), tackifying resins, plasticizers, thiab cov khoom tsim nyog. Nws yog ib qho yooj yim-rau-ua, ib puag ncig tus phooj ywg nplaum uas tsis muaj kuab paug emissions. Piv rau ib txwm siv SBS / SIS-hom HMPSA, roj hmab-hom HMPSA nthuav tawm zoo dua qhov kub thiab txias, cov khoom ntub dej zoo heev ntawm PE substrates, thiab cov dej thiab roj kuj zoo.
