I-compound yokubumba ishiti ibhekisa kwi-resin ye-polyester engagcwaliyo njengomzimba oyintloko, yongeza i-agent yokunyanga, i-agent yokukhulula i-mold, i-filler, i-agent yokuncitshiswa okuphantsi, i-thickener, njl. I-compound yokubumba egqunywe ngefilimu ye-polyethylene (PE). Eli phepha lichaza ngokufutshane ukwakheka kunye nokusetyenziswa kohlu lwe-SMC.
Ukwakhiwa kweCompound yeSheet Molding
I-SMC yenziwe nge-resin ye-polyester engagcwaliyo, i-agent edibanisayo, i-initiator, i-filler, i-thickener, i-agent yokukhulula, i-fiber yeglasi, kunye ne-polymerization inhibitor. Phakathi kwazo, iindidi ezine zokuqala zibonelela ngesakhelo sezinto zeemveliso kunye nokwandisa amandla. Iindidi ezine zokugqibela ikakhulu zezophawu lokwanda kwe-viscosity, ukumelana nokugqwala, ukugquma, kunye nokuzinza kwesakhiwo semveliso.
1. I-resin ye-polyester engagcwaliyo kunye nee-agents ezidibanisayo zezona zinto ziphambili kwi-SMC. Ii-resin ze-polyester ezingagcwaliyo zihlala zi-polycondensed ezivela kwi-dicarboxylic acids ezingagcwaliyo (okanye ii-anhydrides), ii-dicarboxylic acids ezingagcwaliyo (okanye ii-anhydrides), kunye nee-polyols. Ineempawu ezithile zoomatshini kunye namandla, kwaye amandla angaphakathi ayafana. I-arhente edibanisayo ikakhulu yi-styrene. Emva kokuba ezi zimbini zidibene, zezona zinto ziphambili zokwenza imveliso ibe yiplastiki, edlala indima yokunxibelelana, inkxaso, ibhalansi yokudlulisela, kunye nokukhusela.
2. Isiqalo sibangela ukuba i-resin kunye ne-crosslinker ziphile kwaye zakheke kwinqanaba le-resin paste. Umsebenzi wayo ngokuyintloko kukwenza i-resin kunye ne-double bond kwi-cross-linking monomer efana ne-styrene copolymerize ukuze i-SMC iqine kwaye yenziwe kwindawo yokubumba.
3. I-filler ithatha ngaphezulu kwesithathu se-sheet molding compound kwaye inokulungisa i-viscosity ye-molding compound. Ngokuqhelekileyo kufuneka ibe neempawu zomxhuzulane ophantsi, ixabiso eliphantsi lokufunxwa kweoyile, ii-pores ezimbalwa, ukumelana nokugqwala, kunye nexabiso eliphantsi. Izinto ezisetyenziswa kakhulu kwi-filler yi-CaCO3, i-Al(OH)3, njl.njl.
4. Izinto ezithinathayo zinika i-SMC i-viscosity ephezulu, ipropathi enganamatheliyo. Ukulungiswa kwee-sheet kunye nee-bulk molding compounds kufuna i-viscosity ephantsi ye-resin ukuze kube lula ukufunxwa kwe-glass fiber kunye ne-filler yi-resin. Kwaye ukufunxwa koxinzelelo kufuna i-viscosity ephezulu. Ke ngoko, kuyimfuneko ukongeza i-thickener ngaphambi kwenkqubo yokufunxwa ukuguqula i-viscosity ephantsi yokufunxwa kwe-glass fiber ibe yi-viscosity ephezulu enganamatheliyo.
5. Isixhobo sokukhulula sithintela i-compound yeshiti ukuba ingabi nobudlelwane nomphezulu we-mold yesinyithi. Isixhobo sokukhulula sinokuthintela i-resin ye-polyester engagcwaliyo ukuba ingadibani nomphezulu we-mold yesinyithi ngexesha lenkqubo yeplastiki yomxube we-resin. Ngokuyintloko ii-acids ezinamafutha ezinde okanye iityuwa ezimelwe yi-zinc stearate. Ukusetyenziswa kakhulu kuya kunciphisa lula ukusebenza kwemveliso. Ukusetyenziswa ngokubanzi kwenza i-1 ~ 3% yemveliso iyonke ukuqinisekisa umgangatho wemveliso.
6. Iifayibha zeglasi zinokuphucula ukumelana nokugqwala kunye neempawu zokuthintela ukugquma ze-SMC. I-compound yeshiti idla ngokukhetha iimathi zefayibha zeglasi ezinqunqiweyo njengezinto zokuqinisa. Ukusetyenziswa kakhulu kuya kwenza imveliso ibe thambile kakhulu, kwaye ukusetyenziswa kwedosi encinci kakhulu akuyi kuba nefuthe elicacileyo lokuqinisa kwimveliso. Ukusetyenziswa ngokubanzi malunga ne-20%. Ngale ndlela, imveliso inokuhlangabezana ngaxeshanye neenkqubo ezimbini zokubumba i-extrusion kunye nokubumba i-compression.
7. I-inhibitor yonyusa uzinzo lwe-SMC kwaye yandisa ixesha lokugcina. Ekubeni i-styrene yokuqala iya kubola kancinci, nto leyo ebangela ukuba i-resin ibe yi-polymerization, ukongeza inani elifanelekileyo le-free radical scavenger (i-polymerization inhibitor) kunokucothisa isantya sokubola kwe-styrene kwaye kwandise ixesha lokugcina kwayo. I-inhibitors zihlala ziyi-benzoquinones kunye nee-polyvalent phenolic compounds.
Ukusetyenziswa kweeMveliso zeCompound zeSheet Molding
I-SMC ineengenelo zokusebenza kakuhle kombane, ukumelana nokugqwala okunamandla, uyilo lobunjineli olukhaphukhaphu, olulula noluguquguqukayo, njl. Iimpawu zayo zoomatshini ziyafana nezinye izinto zesinyithi. Ke ngoko, isetyenziswa kakhulu kwiindawo ezisibhozo ezifana noshishino lweemoto, izithuthi zikaloliwe, ulwakhiwo, izixhobo zombane, kunye nonxibelelwano (Itheyibhile 1).
Phakathi kwazo, kwinqanaba lokuqala, yayisetyenziswa kakhulu ngendlela yeebhodi zokukhusela ubushushu kwicandelo lokwakha, izixhobo zombane, kunye nonxibelelwano, kwaye ubuchwepheshe sele bukhulile. Emva koko yasetyenziswa kwishishini leemoto ukutshintsha inxalenye yezinto zentsimbi kunye ne-aluminium alloy zomzimba ukunciphisa ubunzima bemoto.
Phantsi kwemvelaphi yokonga amandla kunye nokunciphisa ukukhutshwa komoya kunye nophuhliso lwezithuthi ezintsha zamandla, itekhnoloji yeemveliso zeemoto iyaqhubeka nokukhula isiya kukhaphukhaphu kwaye ikumgangatho ophezulu. Ukuza kuthi ga ngoku, ukusetyenziswa kwezixhobo ze-SMC kunokubonwa kuyo yonke indawo kubomi bemihla ngemihla. Oku kubonakala kunxibelelwano olungenazingcingo, kwiindawo zombane ezithintela ukuqhuma, izixhobo zokuthintela ubushushu emhlabeni, amagumbi okuhlambela, kunye nezibonelelo zikaloliwe ezihamba ngesantya esiphezulu.
Itheyibhile 1 Izicelo ezisibhozo eziphambili kunye neendawo zokwahlulahlula izixhobo ze-SMC
| NO | Intsimi | Ukwahlulahlulahlula |
| 1 | Ishishini leemoto | Iindawo zokumiswa, iideshibhodi; iindawo zomzimba kunye nezinto ezisetyenziswa phantsi kwebhondi |
| 2 | Isithuthi sikaloliwe | Iifreyimu zeefestile; Izihlalo; Iiphaneli zeenqwelo kunye neesilingi; Izixhobo zendlu yangasese |
| 3 | Icandelo lokwakha | Itanki yamanzi; Iimveliso zokuhlamba; Itanki yeSeptic; Ifomu yesakhiwo; Izixhobo zegumbi lokugcina izinto |
| 4 | Izixhobo zoMbane kunye noNxibelelwano | Izivalo zombane; izixhobo zombane kunye nezixhobo (izixhobo zokuvala ubushushu) |
| 5 | Igumbi lokuhlambela | Isinki; Izixhobo zeshawa; Igumbi lokuhlambela ngokubanzi; Izinto zokucoca |
| 6 | Izinto ezisetyenziswa emhlabeni | Umgangatho ochasene nokutyibilika ochasene nokunganyakazi |
| 7 | Isigqubuthelo sombane esingaqhumiyo | Iimveliso zegobolondo zezixhobo zombane ezingaqhumiyo |
| 8 | Unxibelelwano olungenazingcingo | I-antenna yokubonakalisa i-FRP, njl. |
Shwankathela
I-resin ye-polyester engagcwaliyo, i-agent edibanisayo, i-initiator, kunye ne-filler kwi-sheet molding compound zibonelela ngesakhelo sezinto zemveliso kwaye zonyusa amandla esakhiwo. I-thickener, i-agent yokukhulula, i-fiber yeglasi, kunye ne-polymerization inhibitor zongeza i-viscosity, ukumelana nokugqwala, ukufudumala, kunye nokuzinza kwesakhiwo kwimveliso. Ezi mveliso zisetyenziswe kwiindawo ezisibhozo eziphambili kuquka ishishini leemoto kunye nezithuthi zikaloliwe. Phantsi kwemvelaphi yangoku yokulondolozwa kwamandla, ukukhuselwa kwendalo, kunye nokusetyenziswa kwamandla aphantsi, ishishini leemoto libeke phambili iimfuno eziphezulu neziphezulu zezinto ze-SMC ngenxa yeemfuno zazo ezilula. Eli ligunya eliphambili lophuhliso lwetekhnoloji ye-SMC.
Sebenzisaumatshini wokushicilela we-hydraulic odityanisiweyoukucinezela iimveliso ze-compound molding sheet. UZhengxi yingcaliumzi-mveliso we-hydraulic press eTshayina, ebonelela ngoomatshini bokushicilela abakumgangatho ophezulu. Qhagamshelana nathi ukuze ufumane iinkcukacha.
Ixesha leposi: Meyi-17-2023
