Ziwiri zikuluzikulu polyurethane likamanena: mwachidule, mbali ndi ndemanga

Ziwiri zikuluzikulu polyurethane ndi polima amene amapangidwa mwa kusakaniza zosakaniza awiri. Woyamba kuchita isocyanate pawiri, pamene pawiri chachiwiri angakhale hydroxyl gulu. zinthu kucheza, ndi polima chifukwa aumbike ku eg polyurethane.

mitundu polyurethane

Pakuti polima ndi adzafuna kusakaniza nthumwi yochiritsa ndi tsinde mu kufanana yoyenera. Ziwiri zikuluzikulu polyurethane akhoza umaimiridwa ndi kusintha kuzizira ndipo otentha polymerization. Yotsirizira njira zinthu Kumafuna kumva kutentha okwera pamene woyamba polymerized pa kutentha achilengedwe.

mbali Ofunika

Zipangizo zinalongosoledwa ntchito kupanga, ndi mkulu mphamvu makhalidwe, iwo ndi kugonjetsedwa ndi mapangidwe ankhanza ndi oipa, komanso kutentha m'mwamba. mbali zonsezi kuwonjezera kuchuluka kwa ntchito polyurethane. Ndi oyenera kupanga:

• utoto;
• kumatira;
• mankhwala ena omatira;
• vanishi.

Pambuyo kusakaniza zikuchokera amapeza flowability kwambiri, imene imathandiza popanga therefrom mbali kwa akuponya luso. Chitsanzo ndi kuonetsetsa dongosolo wamanja. M'nkhani ino tikukamba za ziwiri zikuluzikulu polyurethane kuponyera mitundu. The katundu zinthu ofunitsitsa ndi zigawo zikuluzikulu pachiyambi. Mu gawo ili yofunika ya isocyanate hardener ndipo m'munsi.

mbali zina

The katundu zinthu zingasiyane malingana ndi Kuwonjezera zinthu zosiyana, monga fillers ndi utoto. Ena polyurethanes m'malo mphira, chifukwa yodziwika ndi elasticity mkulu. Polyurethanes angapezeke kuti atha kubwezeretsa mawonekedwe wapachiyambi chifukwa kuwononga makina, zomwe zimawachititsa chofunika kwambiri mu makampani.

Mwachidule malo ntchito

Ziwiri zikuluzikulu polyurethane anapeza anthu ambiri masiku ano. Kugwiritsidwa ntchito kupanga zodzikongoletsera, wa asilikali osiyana ndi castings magiya. Ntchito katundu wa mbali chifukwa sizovuta mkulu. Ichi chizathandiza ntchito chuma ngakhale mavuto. Chifukwa, osatha kupereka viscous, zovuta ndi mankhwala kusamva zigawo zikuluzikulu. Monga yotsirizira zingakhale:

• zida;
• mitengo;
• pulleys;
• mawilo;
• odzigudubuza;
• malamba imodzi;
• anatsekera zinthu;
• Various zoteteza zokutira;
• zowalamulira;
• mapaipi;
• Tsatanetsatane wa mayendedwe;
• wamanja.

Mfundo wokonzeka kutumikira monga mkulu khalidwe ndi lalitali, chifukwa iwo ndi kugonjetsedwa kuvala ndipo cholimba kwambiri. Madzi ziwiri zikuluzikulu zotanuka mitundu polyurethane maziko a mawilowo chifukwa magalimoto ndi forklifts. Chifukwa, mankhwala akhoza kuwapeza, umene uli kwambiri cholimba kuposa mphira. Iwo ndi okonzeka ntchito ngakhale pamene kuyenda kuwonongeka.

Mabukuwa ndi maziko zothangatira ndi kalozera odzigudubuza, amene opareshoni molumikizana ndi pazimalamba zozungulira ndi conveyor. zam'mwamba ndi wokonzeka kutumikira yaitali kwambiri kuposa mphira lamba HIV, mayendedwe ndi mayendedwe.

Mabukuwa ntchito damper ndi nyengo kusindikiza, chifukwa ali ndi kukana apamwamba kuvala ndi durability. N'chifukwa chake mbali mphira zaposachedwapa ndi zambiri m'malo mwa polyurethane. Kusinthasintha mu nkhani iyi amakhalabe pa mlingo chomwecho. Ziwiri zikuluzikulu polyurethane akamaumba wapeza ntchito mu kupanga mapaipi, amene yodziwika ndi mphamvu ndi kukana mankhwala. Zochitika analandira mu chidutswa chimodzi. Komanso, kugwiritsa ntchito zinthu sangathe kokha mapaipi kuchokera mkati, komanso kunja.

Reviews a m'madera ena ntchito

Malinga ogula ziwiri zikuluzikulu polyurethane ntchito kupanga zomatira ndi penti ndi vanishi. osakaniza analandira pambuyo polymerization kugonjetsedwa ndi zotsatira zakunja mwamphamvu unachitikira ndi wokonzeka kutumikira kwa nthawi yaitali. The polyurethane madzi amagwiritsidwa ntchito mu kupanga mitundu, amene anachita mwa kuchita luso. Kenako, mankhwala ntchito kuponyera:

• konkire;
• poliyesitala resins;
• sera;
• gypsum.

Kuyambira mawu ogula, ndi madzi ziwiri zikuluzikulu polyurethane ntchito komanso m'munda wa mankhwala, pamene nkhaniyo ili maziko kupeza mano otere. Polyurethane ntchito zambiri ndi zodzikongoletsera kupanga. Mwa zimenezi ngakhale adzakhetsedwa apansi, amene yodziwika ndi cholimba, kugonjetsedwa ndi kuvala ndi kukana mkulu katundu.

Malinga ndi ogula m'madera ena a m'madera polyurethane ali opambana zitsulo kwa chiwerengero cha magawo. Komabe, kupanga ndondomeko ndi zosavuta, amene amalola kupeza pa linanena bungwe la zigawo kakang'ono ndipo castings chachikulu, yoyamba amatha kulemera zosaposa gram, pamene yotsirizira mwina gulu la makilogalamu 500 ndipo zambiri.

Kuti mudziwe zambiri pa polyurethane chifukwa amatha kuumba

Ziwiri zikuluzikulu polyurethane kupanga amatha kuumba chingathe kupirira nambala inayake ya castings. Ngati tikulankhula masitampu wamba, miyala osewera akhoza kuchitika nthawi 1,200. Ngati mu ndondomeko ya mtundu kupanga ntchito zipangizo zabwino ndi zofunika kwa yokonza osakaniza akhala anakumana, ndiye mawonekedwe wokonzeka kupirira mpaka castings 4,000. Izi ndi zoona ngakhale choncho pamene mawonekedwe a linatsimikizidwa popereka processing zingalowe, komanso ntchito kudzazidwa si abrasive kwambiri, zikuwononga ndi zipangizo zomatira.

Onani osiyanasiyana msika lonse, inu mukhoza kumvetsa kuti polyurethane lero ukufanizidwa ndi zopangidwa angapo, tchulani pakati pawo:

• vulkopreny;
• Vulkollan;
• adipreny;
• poramoldy.

Ngati mungakonde chikuni Russian, muyenera kusankha SIC-PU 5, SKU-PFL 100. Iwo anapanga poliyesitala kupanga zoweta, koma khalidwe si zoipa kwambiri kuposa anzawo yachilendo. Komanso, iwo akupita ku zinthu zina.

Brand polyurethane amasiyana mipweya, kuchuluka kwa magulu urethane, pomanga unyolo polima ndi nkhani maselo kulemera. Katundu akhoza lizilamuliridwa ndi kusankha mosamala zopangira. Zimenezi zikhoza kuwapeza aloyi ndi nthambi ma polima unyolo.

Zina likamanena polyurethane

Ziwiri zikuluzikulu polyurethane likamanena akhoza wodzilemekeza ndi zinthu zosiyanasiyana, akuti:

• modifiers;
• fillers;
• utoto.

Iwo anafunika kusintha khalidwe la zikuchokera. Mwachitsanzo, kuti imathandizira zimene modifiers ntchito, omwe ananenanso mu tiziduswa tating'ono ting'ono. Pankhani inki, iwo amatha kusintha tione njira amafotokozera chilango mtundu. Pofuna kuchepetsa zili pulasitiki, fillers ntchito moti malonda ndi mtengo.

Excipients zingakhale:

• talc;
• choko;
• mpweya wakuda;
• mankhwala, galasi, mpweya ulusi.

Komabe mndandanda umenewu sangatengedwe kukhala wangwiro. Polyurethane mawonekedwe miyala ndi mtundu mithunzi ku chikasu kuwala bulauni. Ngati ntchito zina mwapadera, n'zotheka kuti pafupifupi mtundu uliwonse.

Pomaliza

Polyurethanes lero akhala ntchito pafupifupi m'madera a makampani. zakuthupi More ntchito tsiku ndi tsiku. Monga mmodzi mwa madera zingamuthandize amachita madzi bicomponent polyurethane. ntchito yake ya m'Chingelezi chosavuta ndi speeded ntchito pa kuponyera simenti ndi pulasitala. Mothandizidwa ndi polyurethane kunatheka kupanga mitundu yaing'ono kamangidwe, amaika mumsewu ndi zinthu zokongoletsera, ngakhale panyumba.