Ukuxuba intloko yezixhobo ze-polyurethane elastomer: ukuxuba ukuxuba, ukuxuba ngokulinganayo.Ukusebenzisa uhlobo olutsha lwevalve yesitofu, idigri yevacuum ilungile ukuqinisekisa ukuba imveliso ayinamaqamza amakhulu.Intlama yombala inokongezwa.Intloko yokuxuba inomlawuli omnye wokusebenza lula.Ukugcinwa kwecandelo kunye nolawulo lobushushu: Itanki yesimbo sebhatyi enenqanaba lokubonwayo.Iigeyiji zoxinzelelo lwedijithali zisetyenziselwa ulawulo loxinzelelo kunye neempawu / ubuncinci bexabiso le-alamu.Izifudumezi ezixhathisayo zisetyenziselwa ukulawula ubushushu becandelo.Itanki ixhotyiswe nge-stirrer ukuxuba izinto ngokulinganayo.

Ukusetyenziswa kwezixhobo zeizixhobo polyurethane elastomerimveliso:

1. Ugwebu lolusu oluqinileyo: lusetyenziswa kwizinto ezahlukeneyo zefanitshala, indawo zokumisa isihlalo sebhodi, indawo zokumisa isihlalo semoto yabahambi, imiqamelo yebhafu yokuphulula, indawo zokumisa iingalo zebhafu, iibhafu ezingasemva, imiqamelo yezihlalo zebhafu, amavili okuqhuba imoto, imiqamelo yemoto, ngaphakathi kwemoto nangaphandle. Izixhobo, imivalo ye-bumper, izixhobo zonyango kunye nezixhobo zotyando, ii-headrests, izixhobo zokuzigcina izihlalo, izixhobo zokufaneleka, amatayara e-PU kunye nolunye uchungechunge;

2. Ugwebu oluthambileyo nolucothayo: zonke iintlobo zeethoyi ezibuyela kancinane, ukutya okwenziwa ngokucothayo, oomatrasi ababuyela kancinane, imiqamelo ebuyela kancinane, imiqamelo yenqwelo-moya ebuyela ngokucothayo, imiqamelo yabantwana nezinye iimveliso;

3. Ugwebu oluthambileyo olunokuqina okuphezulu: iithoyi kunye nezipho, iibhola zePU, iikhushini zefenitshala ezinokuqina okuphezulu kwePU, isithuthuthu esomeleleyo sePU, ibhayisekile, kunye nemiqamelo yesitulo semoto, iisali zezixhobo zemidlalo ezomeleleyo zePU, iisali zesitulo zamazinyo zePU, iPU. i-headrest yezonyango, ibhedi yonyango yePU eyenza umatrasi, iline yeglavu yokuqina kwePU.

4. Iindidi zegadi ezithambileyo nezilukhuni: Uluhlu lweringi yentyatyambo ye-PU, uthotho lweentyatyambo zeentyatyambo zeplanga ezihambelana nokusingqongileyo, i-PU simulation flower and leaf series, PU simulation tree trunk series, njl.;

5. Ukuzaliswa okuqinileyo: amandla elanga, izifudumezi zamanzi, imibhobho yokufudumeza ebekwe kwangaphambili kunye ne-thermal yokugquma, iipaneli zokugcina ezibandayo, iipaneli zokusika, iinqwelo zerayisi ezishushu, iipaneli zesangweji, iingcango ezivalayo, izikhenkcezisi ezingaphakathi, izikhenkcezisi, iingcango zogwebu eziqinileyo kunye neefestile. , iingcango zegaraji, iibhokisi zokugcina ezintsha, i-Insulation barrel series;

6. Upakisho oluthambileyo noluqinileyo lwesithinteli sokusingqongileyo: lusetyenziswa kwiimveliso ezahlukeneyo zokupakishwa eziethe-ethe nezinexabiso kunye nolunye uthotho;

7. I-foam yomthi wokulinganisa onzima: igqabi lomnyango we-foam olukhuni, i-architectural decoration umgca wekona, umgca ophezulu, ipleyiti yesilingi, isakhelo sesibuko, isiphatho sesibane, ishelufu yodonga, isithethi, izixhobo zokuhlambela ze-foam ezinzima.

Imathiriyeli ekrwada ye-polyurethane elastomers ikakhulu zizintlu ezithathu, ezizezi, ii-oligomer polyols, ii-polyisocyanates kunye ne-chain extenders (ii-agent ezidibanisayo).Ukongeza, ngamanye amaxesha ukuze kwandiswe isantya reaction, ukuphucula ukusebenza processing kunye nokusebenza imveliso, kuyimfuneko ukuba ukongeza agent compounding.Kuphela izinto ezisetyenziselwa ukuveliswa kweesali ze-polyurethane zichazwe ngokweenkcukacha ngezantsi.

Iimveliso ze-polyurethane elastomer zinemibala, kwaye inkangeleko yazo entle ixhomekeke kwimibala.Kukho iindidi ezimbini zemibala, iidayi eziphilayo kunye ne-inorganic pigments.Uninzi lweedayi zendalo zisetyenziswa kwiimveliso ze-thermoplastic polyurethane, ukuhombisa kunye nokuhombisa iindawo zokutofa kunye neendawo ezikhutshiweyo.Kukho iindlela ezimbini ngokubanzi zokufaka umbala kwiimveliso ze-elastomer: enye kukugaya izinto ezincedisayo ezifana ne-pigments kunye ne-oligomer polyols ukwenza umbala we-colomer umama wotywala, kwaye emva koko uxube kwaye udibanise umthamo ofanelekileyo wotywala oomama kunye ne-oligomer polyols ngokulinganayo. zitshise.Emva kwe-vacuum dehydration, isabela kunye namacandelo e-isocyanate ukuvelisa iimveliso, ezifana ne-thermoplastic polyurethane granules kunye nezixhobo zokupaka umbala;enye indlela kukugaya izongezelelo ezifana ne-pigments kunye ne-oligomer polyols okanye i-plasticizers ibe yi-color paste okanye i-color paste, ikhutshwe ngamanzi ngokufudumeza kunye ne-vacuum, kwaye ipakishwe ukuze isetyenziswe kamva.Xa usebenzisa, yongeza umbala omncinci wokuncamathisela kwi-prepolymer, ugxobhoze ngokulinganayo, uze uphendule ngekhonkco-eyandisa i-agent edibanisa i-cross-link ukuze uphose imveliso.Le ndlela isetyenziswa kakhulu kwinkqubo ye-MOCA vulcanization, umxholo we-pigment kwi-paste yombala malunga ne-10% -30%, kwaye inani elongezelelweyo lokunamathisela umbala kwimveliso lingaphantsi kwe-0.1%.

I-polymer diol kunye ne-diisocyanate zenziwe kwii-prepolymers, ezixutywe ngokupheleleyo, zifakwe kwi-mold emva kwe-vacuum defoaming, ifakwe kwi-mold kwaye yanyangwa, emva koko yanyangwa ukufumana imveliso:

Okokuqala, dehydrate izixhobo ze-polyurethane elastomer phantsi koxinzelelo oluncitshisiweyo kwi-130 ℃, yongeza i-polyester ehlanjululwayo (kwi-60 ℃) kwisitya sokusabela esiqulethe i-TDI-100 edibeneyo, kwaye udibanise i-prepolymer ngokuvuselela okwaneleyo.Indlela yokusabela ye-synthesis i-exothermic, kwaye kufuneka kuqatshelwe ukuba ubushushu bokusabela kufuneka balawulwe phakathi koluhlu lwe-75 ℃ ukuya kwi-82 ℃, kwaye ukusabela kunokwenziwa iiyure ezi-2.I-prepolymer edibeneyo yayifakwe kwi-oven yokumisa i-vacuum kwi-75 ° C, kwaye ihlanjululwe phantsi kwe-vacuum yeeyure ze-2 ngaphambi kokusetyenziswa.

Emva koko tshisa i-prepolymer kwi-100 ℃, kwaye ucoce (i-vacuum degree -0.095mpa) ukususa amaqamza omoya, ulinganise i-agent edibanisa i-MOCA, uyitshise ngesithando sombane kwi-115 ℃ ukunyibilika, kwaye ugqume isikhunta ngokukhululwa okufanelekileyo. iarhente yokufudumeza (100℃).), i-prepolymer ye-degassed ixutywe kunye ne-MOCA enyibilikisiweyo, ubushushu bokuxuba yi-100 ℃, kwaye umxube uxutywe ngokulinganayo.Kwi-mold preheated, xa umxube ungagelezi okanye unamathele kwisandla (njenge-gel-like), vala isikhunta kwaye usibeke kwi-vulcanizer yokubumba i-vulcanization (iimeko ze-vulcanization: ukushisa kwe-vulcanization 120-130 ℃, ixesha le-vulcanization, enkulu kunye ne-Elastomers ezityebileyo, ixesha le-vulcanization lingaphezulu kwe-60min, kwii-elastomers ezincinci nezincinci, ixesha le-vulcanization yi-20min), unyango lwe-post-vulcanization, lubeka iimveliso ezibunjiweyo kunye ne-vulcanized kwi-90-95 ℃ (kwiimeko ezikhethekileyo, ingaba yi-100 ℃) Qhubeka u-vulcanize kwiiyure ze-10 kwi-oven, uze uyibeke kwindawo yokushisa yeentsuku ze-7-10 ukugqiba ukuguga kwaye wenze umkhiqizo ogqityiweyo.