Izinto ezihlanganisiweyo zonke zidityaniswe kunye neentsinga zokuqinisa kunye nempahla yeplastiki. Indima ye-resin kwizinto ezidibeneyo ibalulekile. Ukukhethwa kwe-resin kumisela uluhlu lweeparamitha zenkqubo yeempawu, ezinye iimpawu zomatshini kunye nokusebenza (iipropati zokushisa, ukutsha, ukuchasana nokusiNgqongileyo, njl.), izakhiwo ze-resin nazo ziyinto ephambili ekuqondeni iimpawu zomatshini wezinto ezidibeneyo. Xa i-resin ikhethiwe, iwindow emisela uluhlu lweenkqubo kunye neempawu ze-composite zizimisele ngokuzenzekelayo. I-resin ye-Thermosetting luhlobo lwe-resin olusetyenziswa ngokuqhelekileyo kwii-composites ze-resin matrix ngenxa yokwenziwa kwayo kakuhle. Iiresin ze-Thermoset ziphantse zibe lulwelo kuphela okanye ziqine ngokwe-semi-soli kwiqondo lobushushu begumbi, kwaye ngokwengqiqo zifana kakhulu ne-monomers ezenza i-thermoplastic resin kune-thermoplastic resin kwimeko yokugqibela. Ngaphambi kokuba i-thermosetting resins ziphiliswe, zinokucutshungulwa zibe ziimilo ezahlukeneyo, kodwa xa sele zinyangisiwe kusetyenziswa iiarhente zokunyanga, abaqalisi okanye ubushushu, azikwazi ukubunjwa kwakhona ngenxa yokuba amabhondi ekhemikhali ayenziwa ngexesha lokunyanga, ukwenza iimolekyuli ezincinci ziguqulwa zibe yi-three-dimensional cross-linked. iipolima eziqinileyo ezinobunzima obuphezulu bemolekyuli.
Kukho iintlobo ezininzi ze-thermosetting resins, eziqhelekileyo ezisetyenziswayo zi-phenolic resins.iintlazi epoxy, iintlaka zebhis-horse, iireyini zevinyl, i-phenolic resins, njl.
(1) I-Phenolic resin yintlaka yokuqala ye-thermosetting ene-adhesion efanelekileyo, ukumelana nobushushu obulungileyo kunye neempawu ze-dielectric emva kokunyanga, kwaye iimpawu zayo ezibalaseleyo zihle kakhulu kwiipropati zokubuyiswa komlilo, izinga lokukhutshwa kobushushu obuphantsi, ukuxinana komsi ophantsi, kunye nokutsha. Irhasi ekhutshiweyo ayinabungozi kangako. Ukuqhubekeka kulungile, kwaye izinto ezidibeneyo zinokwenziwa ngokubumba, ukujija, ukubeka izandla, ukutshiza, kunye neenkqubo zepultrusion. Inani elikhulu lezinto ezidibeneyo ze-phenolic resin-based composite zisetyenziswa kwizinto zokuhombisa zangaphakathi kwinqwelomoya.
(2)I-epoxy resinyimatrix yentlaka yokuqala esetyenziswa kwizakhiwo zenqwelomoya. Ibonakaliswa yintlobo ngeentlobo zezinto eziphathekayo. Iiarhente ezahlukeneyo zokunyanga kunye ne-accelerators zinokufumana ubushushu bokunyanga ukusuka kwiqondo lobushushu begumbi ukuya kwi-180 ℃; ineempawu eziphezulu zoomatshini; Uhlobo oluhle lokuhambelana nefiber; ukumelana nobushushu kunye nokufuma; ubunzima obubalaseleyo; ukuveliswa okugqwesileyo (i-coverage elungileyo, i-moderate resin viscosity, i-fluidity elungileyo, i-bandwidth yoxinzelelo, njl.); ilungele ukubumba okuhlangeneyo ngokubanzi kwamacandelo amakhulu; zitshiphu. Inkqubo elungileyo yokubumba kunye nokuqina okubalaseleyo kwe-epoxy resin kuyenza ibambe indawo ebalulekileyo kwimatrix yeresin yezinto eziphambili ezidityanisiweyo.
(3)Vinyl resinIbonwa njengenye yezona ntlaka zibalaseleyo ezikwaziyo ukumelana nomhlwa. Iyakwazi ukumelana ne-acids ezininzi, i-alkalis, izisombululo zetyuwa kunye nemidiya ye-solvent enamandla. Isetyenziswa ngokubanzi kwi-papermaking, imboni yeekhemikhali, i-electronics, i-petroleum, ukugcinwa kunye nokuthutha, ukukhuselwa kwendalo, iinqanawa, i-Automotive Lighting Industry. Ineempawu zepolyester engaxutywanga kunye ne-epoxy resin, ukuze ibe neempawu ezibalaseleyo zomatshini we-epoxy resin kunye nokusebenza kakuhle kwenkqubo yepolyester engaxutywanga. Ukongeza kwi-corrosion resistance resistance, olu hlobo lwe-resin lukwanayo nokumelana nobushushu. Ibandakanya uhlobo oluqhelekileyo, uhlobo lobushushu obuphezulu, uhlobo lwe-flame retardant, uhlobo lokumelana nempembelelo kunye nezinye iintlobo. Ukusetyenziswa kwe-vinyl resin kwi-fiber reinforced plastic (FRP) isekelwe ikakhulu ekubekweni kwesandla, ngakumbi kwizicelo zokulwa nokubola. Ngophuhliso lwe-SMC, ukusetyenziswa kwayo kulo mba kukwaphawuleka kakhulu.
(4) I-resin ye-bismaleimide elungisiweyo (ebizwa ngokuba yi-bismaleimide resin) iphuhliswe ukuhlangabezana neemfuno zeejethi zokulwa ezintsha ze-composite resin matrix. Ezi mfuno ziquka: amacandelo amakhulu kunye neeprofayili eziyinkimbinkimbi kwi-130 ℃ Ukwenziwa kwamacandelo, njl njl. Xa kuthelekiswa ne-epoxy resin, i-Shuangma resin ibonakala ngokugqithiseleyo umswakama ophezulu kunye nokumelana nokushisa kunye nokushisa okuphezulu kokusebenza; into engalunganga kukuba ukwenziwa kwezinto akulunganga njenge-epoxy resin, kwaye ubushushu bokunyanga buphezulu (ukunyanga ngaphezulu kwe-185 ℃), kwaye kufuna ubushushu obungama-200 ℃. Okanye ixesha elide kwiqondo lobushushu elingaphezu kwama-200 ℃.
(5) I-Cyanide (qing diacoustic) i-ester resin ine-dielectric engaguqukiyo ephantsi (2.8 ~ 3.2) kunye ne-tangent encinci ye-dielectric loss tangent (0.002 ~ 0.008), ubushushu obuphezulu beglasi (240 ~ 290 ℃) , Ukuncipha okuphantsi, ukufunxa ukufuma okuphantsi, okugqwesileyo iipropathi zoomatshini kunye neempawu zokudibanisa, njl.
Okwangoku, i-cyanate resins isetyenziswa kakhulu kwimiba emithathu: iibhodi zeesekethe eziprintiweyo zedijithali ezikhawulezayo kunye ne-high-frequency, i-high-performance wave-transmitting structure materials and high-performance-high-performance structure composite materials for aerospace.
Ukuyibeka ngokulula, i-epoxy resin, ukusebenza kwe-epoxy resin ayihambelani kuphela neemeko ze-synthesis, kodwa ngakumbi kuxhomekeke kwisakhiwo se-molecular. Iqela le-glycidyl kwi-epoxy resin licandelo eliguquguqukayo, elinokunciphisa i-viscosity ye-resin kunye nokuphucula ukusebenza kwenkqubo, kodwa kwangaxeshanye ukunciphisa ukuchasana nokushisa kwe-resin ephilileyo. Iindlela eziphambili zokuphucula i-thermal and mechanical properties of cured epoxy resins are low molecular weight and multifunctionalization ukwandisa ubuninzi be-crosslink kunye nokwazisa izakhiwo eziqinileyo. Ngokuqinisekileyo, ukuqaliswa kwesakhiwo esiqinileyo kukhokelela ekunciphiseni kwe-solubility kunye nokunyuka kwe-viscosity, okukhokelela ekunciphiseni kwenkqubo ye-epoxy resin. Indlela yokuphucula ukumelana nokushisa kwenkqubo ye-epoxy resin yinto ebaluleke kakhulu. Ukusuka kwindawo yokujonga i-resin kunye ne-ejenti yokunyanga, amaqela asebenzayo ngakumbi, ubukhulu becala lokuxinana. Okukhona iphezulu iTg. Ukusebenza okuthe ngqo: Sebenzisa i-epoxy resin esebenzayo okanye i-ejenti yokunyanga, sebenzisa i-epoxy resin ephezulu. Indlela esetyenziswa ngokuqhelekileyo kukongeza umlinganiselo othile we-o-methyl acetaldehyde epoxy resin kwinkqubo yokunyanga, enesiphumo esihle kunye neendleko eziphantsi. Ubukhulu be-avareji ye-molecular weight, iyancipha ukusabalalisa ubunzima be-molecular, kwaye iphezulu i-Tg. Ukusebenza ngokuthe ngqo: Sebenzisa i-epoxy resin esebenzayo okanye i-arhente yokunyanga okanye ezinye iindlela ezinomlinganiselo ofanayo wokusabalalisa ubunzima bemolekyuli.
Njengomgangatho ophezulu we-resin matrix esetyenziswa njenge-matrix edibeneyo, iimpawu zayo ezahlukeneyo, ezifana ne-processability, iimpawu ze-thermophysical kunye ne-mechanical properties, kufuneka zihlangabezane neemfuno zezicelo eziphathekayo. I-resin manufacturability manufacturability ibandakanya ukunyibilika kwi-solvents, i-viscosity enyibilikayo (i-fluidity) kunye nokutshintsha kwe-viscosity, kunye nokutshintsha kwexesha le-gel kunye nobushushu (ifestile yenkqubo). Ukubunjwa kwe-resin yokwenziwa kunye nokukhethwa kobushushu bokusabela kugqiba i-kinetics ye-chemical reaction kinetics (ireyithi yokunyanga), iipropathi zekhemikhali ze-rheological (i-viscosity-ubushushu ngokuchasene nexesha), kunye ne-chemical reaction thermodynamics (exothermic). Iinkqubo ezahlukeneyo zineemfuno ezahlukeneyo ze-resin viscosity. Ngokubanzi, kwinkqubo yokujija, i-resin viscosity ijikeleze i-500cPs; kwinkqubo ye-pultrusion, i-resin viscosity ijikeleze i-800 ~ 1200cPs; kwinkqubo yokungeniswa kwe-vacuum, i-resin viscosity ijikeleze i-300cPs, kwaye inkqubo ye-RTM ingaba phezulu, kodwa Ngokuqhelekileyo, ayiyi kudlula i-800cPs; ukulungiselela inkqubo yokulungiselela, i-viscosity iyafuneka ukuba ibephezulu, ngokubanzi malunga ne-30000 ~ 50000cPs. Ngokuqinisekileyo, ezi mfuno ze-viscosity zihambelana neempawu zenkqubo, izixhobo kunye nezinto eziphathekayo ngokwazo, kwaye azimi. Ngokuqhelekileyo, njengoko ukushisa kukhula, i-viscosity ye-resin iyancipha kwiqondo lokushisa eliphantsi; Nangona kunjalo, njengoko iqondo lobushushu lisanda, ukusabela kokunyanga kwe-resin kuyaqhubeka, ngokuthetha, ngokuthetha, iqondo lobushushu Ireyithi yokusabela iphinda kabini kunyuso ngalunye lwe-10℃, kwaye olu qikelelo luseluncedo ekuqikeleleni xa i-viscosity yenkqubo ye-resin esebenzayo inyuka ukuya kwi-. indawo ethile ebalulekileyo ye-viscosity. Ngokomzekelo, kuthatha imizuzu engama-50 ukuba inkqubo ye-resin ene-viscosity ye-200cPs kwi-100 ℃ yokwandisa i-viscosity yayo kwi-1000cPs, ngoko ixesha elifunekayo lenkqubo ye-resin efanayo yokwandisa i-viscosity yayo yokuqala ukusuka ngaphantsi kwe-200cPs ukuya kwi-1000cPs kwi-110℃. malunga nemizuzu engama-25. Ukukhethwa kweeparamitha zenkqubo kufuneka kuthathelwe ingqalelo ngokupheleleyo i-viscosity kunye nexesha le-gel. Ngokomzekelo, kwinkqubo yokuqaliswa kwe-vacuum, kuyimfuneko ukuqinisekisa ukuba i-viscosity kwiqondo lokushisa lokusebenza ingaphakathi kuluhlu lwe-viscosity olufunwa yinkqubo, kwaye ubomi bembiza ye-resin kule bushushu kufuneka bube bubude ngokwaneleyo ukuqinisekisa ukuba i-resin. inokungeniswa kumazwe angaphandle. Ukushwankathela, ukukhethwa kohlobo lwe-resin kwinkqubo yokutofa kufuneka kuthathelwe ingqalelo indawo ye-gel, ixesha lokuzalisa kunye nobushushu bezinto eziphathekayo. Ezinye iinkqubo zinemeko efanayo.
Kwinkqubo yokubumba, ubungakanani kunye nokuma kwenxalenye (isikhunta), uhlobo lokuqiniswa, kunye neeparitha zenkqubo zinquma izinga lokutshintshwa kobushushu kunye nenkqubo yokudlulisa ubuninzi benkqubo. I-resin iphilisa ubushushu obuphumayo, obuveliswa kukwenziwa kweebhondi zeekhemikhali. Iibhondi zeekhemikhali ezithe kratya ezenziwe kwiyunithi nganye yeyunithi ngexesha leyunithi, amandla amaninzi akhululwa. I-coefficients yokuhambisa ubushushu yeereyini kunye neepholima zazo ziphantsi kakhulu. Izinga lokususwa kobushushu ngexesha le-polymerization alikwazi ukuhambelana nesantya sokuvelisa ukushisa. Ezi zixa zonyukayo zobushushu zibangela ukusabela kweekhemikhali ukuba kuqhubeke ngesantya esikhawulezayo, okukhokelela ekubeni ngaphezulu Le mpendulo yokuziphendulela ekugqibeleni iya kukhokelela kukusilela koxinzelelo okanye ukuthotywa kwenxalenye. Oku kugqame ngakumbi ekwenziweni kwamalungu adityanisiweyo anobukhulu obukhulu, kwaye kubaluleke ngakumbi ukunyusa indlela yenkqubo yokunyanga. Ingxaki ye "iqondo lokushisa eligqithileyo" lendawo elibangelwa izinga eliphezulu le-exothermic yonyango lwe-prepreg, kunye nokwahlukana kwelizwe (njengomahluko weqondo lokushisa) phakathi kwefestile yenkqubo yehlabathi kunye nefestile yenkqubo yendawo zonke zibangelwa indlela yokulawula inkqubo yokunyanga. "Ubushushu obufanayo" kwinxalenye (ingakumbi kwicala lobunzima benxalenye), ukufezekisa "ubushushu obufanayo" kuxhomekeke kulungiselelo (okanye ukusetyenziswa) kwezinye "iiyunithi zobuchwepheshe" "kwinkqubo yokuvelisa". Kwiindawo ezincinci, ekubeni ubushushu obuninzi buya kuchithwa kwindawo, izinga lokushisa liphakama ngobumnene, kwaye ngamanye amaxesha inxalenye ayiyi kuphiliswa ngokupheleleyo. Ngeli xesha, ukushisa okuncedisayo kufuneka kufakwe ukugqiba ukusabela okunqamlezayo, oko kukuthi, ukufudumala okuqhubekayo.
Itekhnoloji edityanisiweyo engeyiyo i-autoclave yokwenza itekhnoloji inxulumene neteknoloji yokwenza i-autoclave yendabuko. Ukuthetha ngokubanzi, nayiphi na indlela yokwenza izinto ezidibeneyo ezingasebenzisi izixhobo ze-autoclave zinokubizwa ngokuba yi-non-autoclave forming technology. . Ukuza kuthi ga ngoku, ukusetyenziswa kwetekhnoloji yokubumba engeyiyo eye-autoclave kwintsimi ye-aerospace ikakhulu ibandakanya ezi zalathiso zilandelayo: itekhnoloji ye-non-autoclave prepreg, itekhnoloji yokubumba ulwelo, itekhnoloji yokubumba i-prepreg, itekhnoloji yokunyanga i-microwave, itekhnoloji ye-electron beam yokunyanga, itekhnoloji yokubumba i-Balanced pressure fluid. . Phakathi kwezi teknoloji, itekhnoloji ye-OoA (i-Outof Autoclave) ye-prepreg isondele kwinkqubo yokwenziwa kwe-autoclave yesiko, kwaye inoluhlu olubanzi lokubeka ngesandla kunye nesiseko senkqubo yokubeka ngokuzenzekelayo, ngoko ithathwa njengelaphu elingalukwanga elinokuthi liphunyezwe. ngomlinganiselo omkhulu. Itekhnoloji yokwenza i-Autoclave. Isizathu esibalulekileyo sokusebenzisa i-autoclave yamacandelo adibeneyo asebenzayo kukubonelela ngoxinzelelo olwaneleyo kwi-prepreg, enkulu kunoxinzelelo lomphunga wayo nayiphi na igesi ngexesha lokunyanga, ukuthintela ukubunjwa kwee-pores, kwaye le yi-OOA prepreg Ubunzima bokuqala bobuchwephesha. kufuneka igqobhoze. Ingaba i-porosity yenxalenye ingalawulwa phantsi koxinzelelo lwe-vacuum kunye nokusebenza kwayo kunokufikelela ekusebenzeni kwe-autoclave ephilisiwe i-laminate yinqobo ebalulekileyo yokuvavanya umgangatho we-OOA prepreg kunye nenkqubo yokubumba.
Uphuhliso lwetekhnoloji ye-OoA prepreg kuqala yavela kuphuhliso lwe-resin. Kukho iingongoma ezintathu eziphambili ekuphuhliseni i-resins ye-OOA prepregs: enye kukulawula i-porosity yamacandelo abunjiweyo, njengokusebenzisa i-resin ezongezelelweyo ze-reaction-cured resins ukunciphisa i-volatiles kwi-reaction reaction; okwesibini kukuphucula ukusebenza kwee-resin eziphilisiweyo Ukufezekisa iipropathi ze-resin ezenziwe yinkqubo ye-autoclave, kubandakanywa iimpawu zokushisa kunye nezixhobo zomatshini; okwesithathu kukuqinisekisa ukuba i-prepreg inokwenziwa kakuhle, njengokuqinisekisa ukuba i-resin inokuhamba phantsi kwe-gradient yoxinzelelo loxinzelelo lwe-atmospheric, iqinisekisa ukuba inobomi obude be-viscosity kunye nokushisa okwaneleyo kwegumbi ngaphandle kwexesha, njl njl. uphando lwezinto eziphathekayo kunye nophuhliso ngokweemfuno ezithile zoyilo kunye neendlela zenkqubo. Izikhokelo eziphambili kufuneka zibandakanye: ukuphucula iimpawu zomatshini, ukwandisa ixesha langaphandle, ukunciphisa ubushushu bokunyanga, kunye nokuphucula umswakama kunye nokumelana nokushisa. Ezinye zolu phuculo lwentsebenzo ziyangqubana. , njengokuqina okuphezulu kunye nokunyanga ubushushu obuphantsi. Kufuneka ufumane indawo yokulinganisela kwaye uyiqwalasele ngokubanzi!
Ukongeza kuphuhliso lwe-resin, indlela yokwenziwa kwe-prepreg ikwakhuthaza uphuhliso lwesicelo se-OoA prepreg. Uphononongo lufumene ukubaluleka kweendlela zokufunxa zangaphambi kokwenza i-zero-porosity laminates. Uphononongo olulandelayo lubonise ukuba i-prepregs efakwe kwi-semi-pregnated inokuphucula ngokufanelekileyo ukufikeleleka kwegesi. I-OoA prepregs i-semi-pregrated kunye ne-resin, kwaye iifayibha ezomileyo zisetyenziswa njengeendlela zokukhupha igesi. Iigesi kunye ne-volatiles echaphazelekayo ekunyangeni inxalenye ingaba yi-Exhaust ngokusebenzisa iziteshi ezifana ne-porosity yenxalenye yokugqibela yi-<1%.
Inkqubo ye-vacuum bagging yeye-non-autoclave forming (OoA) inkqubo. Ngamafutshane, yinkqubo yokubumba etywina imveliso phakathi kwe-mold kunye ne-vacuum bag, kwaye icinezela imveliso ngokucoca ukwenza imveliso ibe yinto ehambelanayo kunye neempawu ezingcono zoomatshini. Eyona nkqubo yokuvelisa i
Okokuqala, i-arhente yokukhulula okanye i-cloth yokukhulula isetyenziswe kwi-mold ye-layup (okanye i-glass sheet). I-prepreg ihlolwe ngokomgangatho we-prepreg esetyenzisiweyo, ngokukodwa kuquka ukuxinwa komphezulu, umxholo we-resin, i-volatile matter kunye nolunye ulwazi lwe-prepreg. Sika i-prepreg ngokobungakanani. Xa usika, qaphela ulwalathiso lweefibers. Ngokuqhelekileyo, ukuphambuka kolwalathiso lweentsinga kufuneka kube ngaphantsi kwe-1 °. Faka iinombolo kwiyunithi nganye engenanto kwaye urekhode inani langaphambi kokukhulelwa. Xa ubeka iileya, iileyile kufuneka zibekwe ngokungqongqo ngokuhambelana nomyalelo wokubekwa ofunekayo kwiphepha lerekhodi lokubeka, kunye nefilimu ye-PE okanye iphepha lokukhulula kufuneka lidityaniswe kwicala lemicu, kunye namaqamza omoya ukuleqwa kwicala lemicu. I-scraper isasaza i-prepreg kwaye iyikhuphe kangangoko kunokwenzeka ukususa umoya phakathi kweengqimba. Xa ubeka phezulu, ngamanye amaxesha kuyafuneka ukuba udibanise i-prepregs, ekufuneka idityaniswe ecaleni kwendlela yefiber. Kwinkqubo yokudibanisa, i-overlap kunye ne-overlap encinci kufuneka iphunyezwe, kwaye i-seams yokudibanisa yoluhlu ngalunye kufuneka igxininiswe. Ngokubanzi, i-gap ye-splicing ye-unidirectional prepreg ilandelayo. 1mm; i-prepreg ephothiweyo ivumeleke ukuba idibane kuphela, ingadibanisi, kwaye ububanzi be-overlap yi-10 ~ 15mm. Emva koko, nikela ingqalelo kwi-vacuum pre-compaction, kwaye ubukhulu be-pre-pumping buhluka ngokweemfuno ezahlukeneyo. Injongo kukukhupha umoya obanjwe kwi-layup kunye ne-volatiles kwi-prepreg ukuqinisekisa umgangatho wangaphakathi wecandelo. Emva koko kukho ukubekwa kwezinto ezincedisayo kunye ne-vacuum bagging. Ukutywinwa kwengxowa kunye nokunyanga: Imfuneko yokugqibela kukungakwazi ukuvuza umoya. Qaphela: Indawo apho kuhlala kukho ukuvuza komoya yindawo yokutywina.
Siyavelisa kwakhonafiberglass ukuzulazula ngqo,iimathi zefiberglass, umnatha wefiberglass, kwayefiberglass elukiweyo ukujikeleza.
Qhagamshelana nathi :
Inombolo yefowuni: +8615823184699
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Email:marketing@frp-cqdj.com
Ixesha lokuposa: May-23-2022
