1. Intshayelelo
I-EVA sisifinyezo se-Ethlene Vinyl Acetate Copolymer, iPolyoolefinin Polymer. Ngenxa yobushushu obuphantsi bayo obuphantsi, ulwelo olufanelekileyo, i-polay kunye nezinto ezingengo-halogn, kwaye zinokuthwalela ii-polymers ze-polymers, kwaye zinokusetyenziswa kwexabiso lezimbiwa, zinokusetyenziswa njengezixhobo zokucoca intambo, zinokusetyenziswa njengezixhobo zokucoca, zokucamngca; Inokwenziwa kwizinto ze-thermoplastic, kwaye zinokwenziwa ekuthinteleni izinto ezinqamlezileyo.
Uluhlu lwe-EVA Khetha imixholo ye-VA ephezulu ye-EVA njengoko izinto ezisesikweni zinokwenziwa kwizinto ezinganyangekiyo zeoyile; Khetha i-melt Index ye-Eva eliphakathi, yongeza amaxesha ama-2 ukuya kwezi-3 ukugcwaliswa kwe-Eva Flaments kunokwenziwa kwinkqubela phambili ye-oxyrigular kunye nexabiso le-shosmygen elunge ngakumbi (ukuzaliswa).
Kweli phepha, ukusuka kwipropathi yolwakhiwo ye-EVA, ukungeniswa kwesicelo sayo kumzi-mveliso wentambo kunye nethemba lophuhliso.
2. Iipropathi zesakhiwo
Xa uvelisa i-synthesis, ukutshintsha umlinganiselo we-Polymerismes Deegree N / M kunokuvelisa umxholo we-VA ukusuka kwi-5 ukuya kwi-90% ye-EVA; Ukunyusa inani elipheleleyo le-polymerismes linokuvelisa ubunzima bemolekyuli kumashumi amawaka ukuya kumakhulu amawaka e-EVA; I-VA ingezantsi kwe-40%, ngenxa yobukho be-crystaliation yenxalenye, i-elasticity ehluphekayo, yaziwa njengeplastiki yase-Eva; Xa umxholo we-VA ungaphezulu kwe-40%, irabha-njenge-elastomer ngaphandle kwe-crystalliation, iqhelekile njengerabha.
1. Iipropathi ezi-2
I-molecular thein ye-Eva sisiseko esipheleleyo se-Eva
I-Eva Molecule Choin ayiqukethe i-bonds ephindwe kabini, i-Benzene ye-Bezene, i-Acyl, amaqela e-acine kunye namanye amaqela anokutsha, i-phenyl, amanye amaqela. Ukongeza, imolekyuli ngokwayo ayiqulathanga izinto ze-halogn, ke ilungele ngokukodwa kwisiseko se-halogn esingapheliyo.
Ubungakanani obukhulu beqela le-vinyl acetate (va) kwi-Eva ye-EVA kunye ne-polaud yaso ephakathi kuthetha ukuba zombini zithi zobabini zithi zona zombini ziyi-vinyl i-vinyl i-fillet filler fuels. Oku kuyinyani ngakumbi kumsi ophantsi kunye nee-halogn-free, njenge-homeary barhanisi ngaphezulu kwe-50% yomxholo [umxholo we-Al (umzekelo, i-Al (njl. I-Eva kunye nomxholo ophakathi ukuya kwi-VA ephezulu isetyenziswa njengesiseko sokuvelisa umsi ophantsi kunye ne-halogn-flarment flamed slies ekhuselekileyo enezinto ezintle.
Njengomthi we-EVA SEAT viny vinyl Acetate Iqela (VA) li-polar, okuphakathi komxholo we-VA, kokukhona uPololer i-polymer yeyokumelana kweoyile. Ukuchaswa kweoyile ekufunwa ngumzi-mveliso wentambo kakhulu kubhekisa kubuchule bokumelana neoyile ye-polar okanye ebuthathaka. Ngokutsho komgaqo wokungqinelana okufanayo, uEva ngomxholo ophezulu we-VA usetyenziswa njengezinto ezisisiseko ukuze uvelise umsi ophantsi kunye ne-halogn-free riers ekuchanyoneni kweoyile elungileyo.
Imolekyuli ye-Eva kwi-Alfafin H Atom Him isebenza ngakumbi, kwi-radicals ye-Peroxide okanye isiphumo semitha esiphezulu se-Electroni kulula ukuyidibanisa, irabha enxibelelene okanye irabha, inokufunwa kwiimfuno zomsebenzi wengcinezelo kunye nezixhobo zentambo.
Ukongezwa kweqela le-vinyl ye-vinyl yenza ukuba iqondo lobushushu le-Eva lihle kakhulu, kwaye inani le-VA le-VA linokwenza ukuhamba kwe-EVA. Ke ngoko, intsebenzo yawo iphela ilunge ngakumbi kunendlela ye-polythylene efanayo, ukuba sisiseko esithandwayo sezinto ezikhuselayo zezinto ezikhuselayo kunye ne-halogn kunye ne-halog.
2 Izibonelelo zeMveliso
I-2. I-1 yokusebenza kakhulu
I-Eva yomzimba kunye noomatshini, ukumelana nobushushu, ukuxhathisa kwemozulu, ukunganyangeki kwemozulu, iipropathi zombane zilungile kakhulu. Khetha inqanaba elifanelekileyo, unokwenza ukumelana nobushushu, ukusebenza kwelangatye, kodwa neoyile, i-soorent-i-SOLVER ye-Cable.
Izinto ze-ERMOPICS ze-TROPICS zisetyenziswa kakhulu ngomxholo we-VA ye-15% ukuya kwi-46%, ngesalathiso se-5 ukuya kwi-5 ukuya kwi-4. I-Eva inabavelisi abaninzi, oonobumba abaninzi, uluhlu olubanzi, amaxabiso aphakathi, ukuhambisa okwaneleyo, abasebenzisi kufuneka bavule icandelo le-EVA, uphawu, indawo, indawo onokuthi ukhethe, ilungele kakhulu.
I-Eva yi-polyolefin polymer, ukusuka ekuthambekeni nasekusetyenzisweni kwendlela yokusebenza, kunye ne-polythylene (i-Pealyethylene (PE) i-Polyviny ye-Polyviny ye-pheby ye-pheleviny (PVC) ye-Polyviny ye-Polyviny ye-Polyvinyl (PVC) ye-Polyviny ye-Polyviny ye-Cyvinkl (PVC) ye-pibyviny ye-pheby ifanayo. Kodwa uqhubeke nophando, uya kufumana i-EVA kwaye ezi ntlobo zimbini zingezantsi zezinto ezithelekiswa nokuphakama okungaphezulu.
2. 2 Umsebenzi obalaseleyo wokuqhubela phambili
I-Eva kwisicelo sentambo ivela kwi-voltage ye-voltium ephakathi kunye ne-voltage ye-voltage ekhuselweyo ngaphakathi nangaphandle kwesiqalo, kwaye kamva yandiswa ukuya kwi-halogn-free riers. Ezi ntlobo zimbini zezinto ezibonakalayo ezivela kwindawo yokujonga ithathelwa ingqalelo njengento "yokukhusela izinto ezizalisekayo zekhabhoni enkulu kwaye zenza ukuba ukubonwa kwayo, i-rality ilahle kabukhali kabukhali; I-Halogo-flament flamedint i-heel ifuna ukongeza inani elikhulu le-halobiants ye-halobin-flastars, i-haghnn-flogity-freen-free-freen-free vissity inyuka kabukhali, i-ratity ilahle kabukhali kabukhali. Isisombululo kukufumana i-polymer enokufumana iidosi ezinkulu ze-filler, kodwa ikwanokumqatha okuphantsi kunye nolwelo oluhle. Ngesi sizathu, kukhetho olukhethiweyo.
I-Eva yamlt vissosity yokupheliswa kweqondo lokushisa kunye nenqanaba le-Shear liya kwandisa ubushushu obungapheliyo kunye nesantya esiphezulu, unokwenza intsebenzo egqwesileyo kunye neemveliso zentambo. Inani elikhulu lezicelo zasekhaya nezangaphandle zibonisa ukuba, ngenxa yezinto ezinokuzalisa kakhulu umsi, kuba i-viscosity incinci kakhulu, i-3) i-1. Izixhobo ze-ivber-isekwe izixhobo ze-rubber ezineearhente zokuhlala zinokosulelwa kuzo zombini irabha yerabha kunye nenjongo ngokubanzi. Inkqubo yokudibanisa emva (ukudibanisa-ukunxibelelanisa) kungaqhutywa nge-thermochemical (Peroxide) ukudibanisa okanye ukudibanisa i-elektronicy crodiation i-incradious ross.
I-2. 3 Kulula ukuguqula kunye nokuziqhelanisa
Iingcibi neentambo zikuyo yonke indawo, ukusuka esibhakabhakeni ukuya emhlabeni, ukusuka ezintabeni ukuya elwandle. Abasebenzisi beemfuno zecingo kunye neentambo zentambo nazo zahluka kwaye ziyinto engaqhelekanga, ngelixa isakhiwo sentambo kunye nentambo ziyafana, umahluko wentsebenzo uboniswa ikakhulu ekuchitheni kunye nokugquma kwe-sheath.
Ukuza kuthi ga ngoku, bobabini ekhaya nakwamanye amazwe, i-pvc ethambileyo isazibandakanya uninzi lwezixhobo zePolymer ezisetyenziswa kumzi-mveliso wentambo. Nangona kunjalo, ngokwazisa okwandayo kokukhusela kwendalo kunye nophuhliso oluzinzileyo.
Izinto ze-PVC zithintelwe kakhulu, izazinzulu zenza yonke into enokwenzeka ukufumana ezinye izinto kwi-PVC, elona lithembisa kakhulu kulo.
I-EVA inokudityaniswa nee-polymers ezahlukeneyo, kodwa kunye neentlobo ngeentlobo zeminerali kunye nokulungiswa kwee-AIDS, iimveliso ezihlanganisiweyo zinokwenziwa kwiplastikhi ye-thermoplastic kwiintambo zeplastiki, kodwa nakwirabha ye-carble yerabha. Abaqulunqi bokwakha banokusekelwa kwimfuno zabasebenzisi (okanye imigangatho), i-EVA njengoko i-onis ebonakalayo, ukwenza intsebenzo yezinto ezibonakalayo zokufezekisa iimfuno.
Uluhlu lwe-3 le-EVA
I-3. 1 isetyenziswe njengento ekhuselweyo ye-semids ekhuselweyo yeentambo zamandla ezi-voltage ephezulu
Njengoko sonke sazi, ezona zinto ziphambili zezinto ezikhuselayo zimnyama ezimnyama, kwiplastiki okanye isiseko serabhasi okanye irabha yokongeza inani le-carbon emnyama liya kuphakamisa ulwelo lwezinto ezikhuselayo. Ukuthintela ukukhutshwa kwethambeka kwi-nqublight ye-voltage ephezulu, izihlangu zangaphakathi nezangaphandle kufuneka zibe mncinci, zikhanyise, ziqaqambile kwaye zinxibe. Xa kuthelekiswa nezinye iipolymers, i-Eva inokwenza oku ngokulula. Isizathu soku kukuba inkqubo yokuphuma kuka-Eva ilungele kakhulu, ukuhamba okuhle, kwaye akukhathali ukuba kunyibilike inyuke. Izinto ezikhuselayo zahlulahlulwe zangamacandelo amabini: esongelwe kumqhubi wesifundo ngaphandle osibiza ikhaka elingaphakathi - kunye nezinto zangaphakathi zesikrini; esongelwe kwi-inshunsile ngaphandle ebizwa ngokuba yikhali le-Ower-kunye nempahla yangaphandle yesikrini; Isixhobo se-Inner Screen siyinto enkulu kwi-thermoplastic isixhobo esingaphakathi se-Inner uninzi lwe-thermoplastic kwaye ihlala isekwe kwi-EVA ngomxholo we-VA ngomxholo we-18% ukuya kwi-28%; Isixhobo esingaphandle sescreen sidibene kakhulu kwaye sigcwele kwaye sihlala sisekwe kwi-EVA ngomxholo we-VA nge-40% ukuya kwi-46%.
I-3. 2 Thermoplastic kunye ne-thermamed edibene neflash
I-Thermoplastic Flamedistic Remolent Polyoolefin isetyenziswa ngokubanzi kumzi-mveliso wentambo, ikakhulu kwiimfuno ze-halogn okanye ze-halogn-free yeentambo, iintambo zamandla kunye nemigca ephezulu yokwakha. Amaqondo obushushu abo okusebenza ixesha elide asusela kuma-70 ukuya kwengama-90 ° C.
Iikhampasi zamandla aphakathi nenqanaba eliphakamileyo le-10 kv kunye nenani elingaphezulu, ezineMeko yokuSebenza ePhakamileyo yoMbane, iipropathi ezihlawulelwayo zedangatye zithwalwa ikakhulu yi-sheath engaphandle. Kwezinye iiprojekthi zendalo okanye iiprojekthi, iintambo ziyacelwa ukuba zibe ne-wusi ephantsi, i-halogn-free, ityhefu ephantsi okanye umsi ophantsi kunye neepropathi ze-halogist, ke i-thermoplast polyolefeefis sisisombululo esifanelekileyo sisisombululo esisebenzayo.
Ngeenjongo ezithile ezizodwa, ububanzi bangaphandle abuphezulu, ukunyangwa kobushushu kwi-105 ~ 150 ℃ phakathi kweqhina eliyi-PollyEr Prolermer ngokweemeko ze-POLYROLERE Iqondo lobushushu lexesha elide lokusebenza lahlulwe laba yi-105 ℃, i-125 ℃, i-150 ℃, isityalo semveliso sinokwenziwa ngokweemfuno ezahlukeneyo zabasebenzisi okanye i-halogn-free okanye i-halogn enesithintelo.
Kuyaziwa ukuba i-polyolefins ayisiyo-polar okanye i-polar ebuthathaka yePolar. Njengoko zilingana neoyile yezimbiwa ezikwimo ye-pollolecy, iPolyolefins zithathwa njengengakhathalelwanga kwioyile ngokomgaqo wokungqinelana okufanayo. Nangona kunjalo, imigangatho emininzi yekhebula ekhaya nakwamanye amazwe ikwachaza ukuba ukuxhathisa okudibeneyo kufuneka kube nokumelana kakuhle kweoyile, izinyibilikisi kunye nokutsala i-oyile, i-acids kunye ne-alkalis. Lo ngumceli mngeni kubaphandi abaphathekayo, ngoku, nokuba e-China okanye kwelinye ilizwe, ezi zinto zifunwayo ziphuhlisiwe, kwaye izinto zayo zise-Eva.
I-3. 3 I-OXYGENTER YOKUGQIBELA
I-strids ezininzi ezixineneyo zinee-voils ezininzi phakathi kwezinto ezifuna ukugcwaliswa kwekheyi, ukuba ukuzaliswa ngaphakathi kwe-hearden yenziwe ngomqobo we-halogn. Lo mqobo wokuzalisa usebenza njengesithintelo sedangatye (ioksijini) xa intambo itshisa kwaye yaziwa ngokuba yi "i-OXYGEN TERREER" kwishishini.
Iimfuneko ezisisiseko ze-OXGNGN I-OXCYGEN I-OXPRINTERS: I-Expressies elungileyo, i-Halogn-Flass-Fied-Flass (i-Oxyn-Flass Hearness (i-Oxygen Index ihlala ngaphezulu kwe-40) kunye neendleko eziphantsi.
Esi sithintelo seoksijini sisetyenziswe kakhulu kumzi-mveliso we-leble ngaphezulu kweshumi leminyaka kwaye sikhokelele kuphuculo olubalulekileyo kwiflakisi yokubuyiswa kweentambo. Isithintelo seoksijini sinokusetyenziselwa zombini iintambo ze-halogn-flastant-cens-remerment kunye neentambo ze-halogn-flarment-flarmant-furmestant (umz. I-PVC). Isixa esikhulu sokuziqhelanisa sibonisile ukuba iintambo nge-oxygen rierst inokwenzeka ukuba iphumelele iimvavanyo ezivuthayo ezivuthayo.
Ukusuka kwindawo yokujonga ukwenziwa kwezinto, esi sithintelo seoksijini "yi-Ultra-fielller", kuba ukuhlangabezana ne-Filler ephezulu, kuyafuneka ukuba usebenzise i-MG (2 ukuya kwi-3 ukuya kwi-OH) i-MG (oh) i-Eva njengezixhobo ezisisiseko.
I-3. I-4
Izixhobo zokuhengisa ze-Polythylene zithambekele kwiingxaki ezimbini: Okokuqala, zithanda ukunyibilika (okt Sharkskin) ngexesha lokupheliswa; Okwesibini, uqhekezelwe kukoxinzelelo lwendalo. Isisombululo esilula ukongeza inani elithile le-EVA ekuqulunqweni. Isetyenziswe njenge-Eva eguqulweyo kakhulu isebenzisa imixholo esezantsi yenqanaba lenqanaba, i-melt ye-met ye-5 ukuya kwi-2 ifanelekile.
I-4. Ithemba loPhuculo
. Ingakumbi kule minyaka ilishumi idlulileyo, ngenxa yokubaluleka kokukhusela kwendalo, ukuxhathisa amatyala asekwe kwi-Eva-I-Eva-Ukungaxhasi kakuhle kwe-Eva. Ukusebenza kwaso ngendleko kunye nokusebenza ngokugqwesileyo kwenkqubo yokuphuma kunzima ukuyibuyisela ezinye izinto.
. Umzekelo, elona nani liphezulu le-haloging-flarmestant esiyileyo, ukhetho oluphambili lwe-VA / i-va / mi = 3 ~ ye-Eva i-Eva 265 #). Kwaye le mali yenkcazo ye-EVA ukuza kuthi ga ngoku akukho bavelisi basekhaya bavelise kwaye banikezele. Ukungakhankanya umxholo we-VA ungaphezulu kweminyaka engama-28, kwaye unyibilikise index engaphantsi kwe-3 yemveliso ye-Eva Retin kunye nokubonelela.
. Ngaphezulu kwe-50% yomxholo we-VA yerabha, inkampani yasemzini ilawulwa, kwaye ixabiso liyafana nomxholo we-VA 2 ukuya kwezi-3. Amaxabiso aphezulu, achaphazela ubungakanani bohlobo lwerabha, ngoko ishishini lentambo lifuna abafakeli basekhaya, ukuphucula izinga lemveliso yangaphakathi ye-EVA. Ukuveliswa okungaphezulu kweshishini kube kukusetyenziswa okuninzi kwe-Eva.
. Ukusetyenziswa kwe-Eva khula nge-15% ngonyaka kwaye imbono ithembisa kakhulu. Ixabiso lemali kunye nokukhula kwezinto ezikhuselayo kunye nentambo ye-voltage ye-voltage kunye ne-voltage ye-voltage kunye nenqanaba lokukhula, malunga ne-8% ukuya kwi-10% phakathi; I-Polyoolefini ikhula ngokukhawuleza, kwiminyaka yakutshanje ihleli kwi-15% ukuya kwi-20% phakathi, kwaye kwindawo ebonakalayo yeminyaka emi-10 ukuya kweli-10, inokugcina le nqanaba lokukhula.
IXESHA LOKUQALA: UJUL-31-2022