Waya uye tambo zvinhu zvinogona kukamurwa kuita conductive zvinhu, insulating zvinhu, zvekudzivirira, zvidziviriro zvekudzivirira, zvinhu zvekuzadza uye zvichingodaro zvichienderana nekushandisa kwavo zvikamu uye mabasa.Zvinoenderana nemidziyo, inogona kukamurwa kuita simbi (mhangura, aruminiyamu, aluminium alloy, simbi), plastiki (PVC, PE, PP, XLPE/XL-PVC, PU, ​​TPE / PO), rabha, nezvimwe. zvezvinhu izvi zvakajairika kune akati wandei zvivako.Kunyanya thermoplastic zvinhu, zvakadai sepolyvinyl chloride, polyethylene, chero bedzi shanduko yechikamu chechimiro inogona kushandiswa mukudzivirira kana sheath.

Tevere, tinosuma iyo yakajairika isiri-simbi waya uye tambo mbishi zvinhu

Imwe, polyvinyl chloride (PVC)

PVC inowanzoshandiswa sekudzivirira uye zvinhu zvekudzivirira.PVC sewaya uye tambo yekuvharisa tambo: haisi nyore kupisa, kuchembera kuramba, mafuta kuramba, makemikari kuramba, kukanganisa kupikisa, kupenya nyore;Nekudaro, nekuda kweiyo hombe dielectric inogara, inowanzo shandiswa chete sechinhu chekudzivirira cheyakaderera-voltage tambo uye yekudzora tambo.

PVC sewaya uye tambo sheath kuita: neakanaka kupfeka kuramba, kuramba mafuta, asidhi, alkali, mabhakitiriya, mwando uye chiedza chezuva, uye murazvo chiito chine kuzvidzimisa kuita;PVC sheath ine hushoma hwekushanda tembiricha ye -40 ° C uye yakakwirira tembiricha kuramba 105 ° C.

Chechipiri, polyethylene (PE)

PE general physical properties: white waxy, translucent, soft and hard, zvishoma inokwanisa kutambanudza, chiedza kupfuura mvura, isina chepfu;Kupisa maitiro: kutsva, kubva pamoto kuti urambe uchipfuta, kumucheto kwepamusoro kwemurazvo kune yero uye kumucheto kwezasi kwebhuruu, kunyunguduka kunodonha kana kutsva, kunopa kunhuwa kweparafini;Polyethylene processing melting point range ndeye 132 ~ 1350C, tembiricha yemoto i3400C, inongoerekana yapisa tembiricha i3900C.

Polyethylene (PE) inowanzokamurwa kuita LDPE, MDPE, HDPE, FMPE akati wandei mapoka.

1, LDPE: yakaderera density polyethylene imwe yeyakajeka yakatevedzana yepolyethylene, inozivikanwawo seyakadzika-kumanikidza polyethylene, chimiro chechimiro hachina mutsara, ine yakaderera crystallinity uye kupfava poindi, ine zvirinani kuchinjika, kurebesa, magetsi ekudzivirira, kujeka, uye simba guru rekuita.Low density polyethylene ine hurombo hwemagetsi simba, kushoma kupisa kusagadzikana uye, nekuwedzera, kushaya simba kuri pachena ndiko kushomeka kwekusagadzikana kwezvakatipoteredza kusagadzikana kutsemuka.

2, MDPE: yepakati density polyethylene, inozivikanwawo seyepakati pressure polyethylene uye Philip polyethylene, kuita kwayo uye yakakwirira density polyethylene phase nuo, fekitori haichashandiswi, isina kutsanangurwa pano.

3, HDPE, yakakwira density polyethylene ine yakaderera density polyethylene, inozivikanwawo seyakanyanya kudzvanywa polyethylene, ine yakanakisa mashandiro akazara, sekuvandudza kupisa kwekudzivirira uye simba remagetsi, senge kureba, kukotama simba, kudzvanya simba uye kugera simba), uye yakavandudza mhute yemvura uye gasi barriers zvivakwa, kwezvakatipoteredza kusagadzikana kupwanya kuramba kuri pamusoro.

4, FMPE: Foamed PE ndiyo inonyanya kushandiswa furo zvinhu, uchishandisa kemikari foamed polyethylene, dielectric kugara kwayo inogona kudzikiswa kusvika 1.55.Kana iyo tekinoroji nyowani yekugamuchira furo remuviri, ndiko kuti, kana extrusion kune inert gasi (nitrogen kana mhepo) mune yakanyungudutswa polyethylene furo, diki saizi yemabhuru inogona kuwanikwa kubva polyethylene furo, furo dhigirii rinogona kudzorwa pakati pe35-40. %, inopfuura 40% Zhui, dielectric kugara kwayo inogona kudzikiswa kusvika 1.20 kana zvakadaro, uye nekuti iyo isingashandisi kemikari inopupuma mumiririri, iyo yekuvharisa haina furo mumiriri wakasara, uye kurasikirwa kwedielectric kunogona kuderedzwa zvakanyanya, iyo yasvika. chiyero chekudzivirira kwemhepo.

Polyethylene ine yakanakisa magetsi ekudzivirira kuita uye inoshandiswa zvakanyanya mukutaurirana tambo insulation.Kuti uvandudze hunyanzvi uye hupfumi zviratidzo zvetambo dzekukurukurirana, foam polyethylene inowanzoshandiswa.Kuti uvandudze kushushikana kwezvakatipoteredza kuputsa kuita, kunze kwekushandiswa kweXPE, inogonawo kusarudza iyo yakanyunguduka index yediki PE.Kazhinji, iyo idiki iyo molecular uremu (iyo yakakwira iyo melting index), iyo yakawedzera kushushikana kwezvakatipoteredza kuputsa kuramba.Iyo yekunyunguduka indekisi pazasi 0.4 inogona kunyanya kudzivirira kwezvakatipoteredza kusagadzikana kupaza.Iyo density ye0.950, iyo yakanyunguduka indekisi yezvidiki zvakasiyana, iyo inonyanya kupikisa kwezvakatipoteredza kusagadzikana kupaza.Kana iyo density yakakura kupfuura 0.95, iyo yemamiriro ekunze kusagadzikana kupaza kuramba kwakawedzera, asi iyo yakaderera density ine yakafanana melting index iri nani zvakanyanya.Nekudaro, kuumbwa kweHDPE kunowanzo kune kwasara kushushikana kwemukati, iyo inofanirwa kutariswa mukati mekushandisa.

Kusanganisa PE uye EVA mune imwe chikamu kunogona kuvandudza kwezvakatipoteredza kusagadzikana kupaza;Yakasanganiswa nePP inogona kuvandudza kuoma;Yakasanganiswa nePE yehuwandu hwakasiyana, inogona kugadzirisa kupfava kwayo uye kuoma.

Ethylene - vinyl acetate copolymer (EVA)

EVA imhando ye thermoplastic ine elastic senge nuo rubber, kushanda kwayo uye zviri mukati mevinyl acetate (VA) ine hukama hukuru: iyo VA diki yakafanana nepamusoro-soro polyethylene, uye iyo yakawanda VA yakafanana nerabha.EVA nuo high pressure polyethylene ine yakaderera VA yemukati, yakapfava uye yakanaka yekukanganisa simba, yakakodzera kugadzira zvinhu zvinoumbwa.

EVA ine elasticity yakanaka uye yakaderera tembiricha kuchinjika, makemikari kuramba, kuramba mamiriro ekunze, uye LDPE copolymerization, inogona kuvandudza kwezvakatipoteredza kupwanya kuramba kweLDPE, kukanganisa kupikisa, kuomarara uye kunamatira pakati pekondakita uye insulation.

Tetrapolypropylene (PP)

Iyo chaiyo giravhiti yepolypropylene ndeye 0.89 kusvika 0.91, inova idiki diki mumapurasitiki akafanana.Iyo ine yakanakisa mechanical simba, yakanyanya kupfavisa tembiricha mu thermoplastic resin, uye yakanaka yakaderera tembiricha kuramba uye kuchembera kuramba.Chete kutenderera kwemaziso kunopokana zvishoma, asi kunogona kuvandudzwa necopolymerization ine stabilizers.

General zvimiro zvepolypropylene: KUONEKWA kwePP kwakada kufanana neHDPE, ichena waxy yakasimba, inoonekera kupfuura PE, isiri-chepfu, inopisa uye icharamba ichipisa mushure memoto, uye kuburitsa kunhuhwirira kwepetroleum nuo.

Kuenzaniswa ne polyethylene, polypropylene ine zvinotevera hunhu hwakasiyana:

1, PP kuomarara kwepamusoro kwakakwira kupfuura PE, kupfeka kuramba uye kugona kubhenda deformation yakanaka kwazvo, saka PP inozivikanwa se "yakaderera density yakakwira simba repurasitiki".

2, PP iri nani pane PE imwe mukana inenge isina kwezvakatipoteredza kusagadzikana kupaza chiitiko, PP ine yakanakisa kuramba kune kwezvakatipoteredza kusagadzikana kupaza.Nekudaro, nekuda kweiyo yakakwira dhizaini yePP mamorekuru chimiro, maitiro ayo kuita pakamuri tembiricha uye yakaderera tembiricha yakashata zvakanyanya.

3, IYE magetsi ekudzivirira kushanda kwePP: PP isiri-polar zvinhu, saka pane yakanaka magetsi ekudzivirira.

Kuiswa kwayo kwemagetsi kwakangofanana neLDPE, uye haishanduki muhupamhi frequency renji.Nekuda kwekuderera kwayo kwakanyanya, dielectric constant idiki pane LDPE (ε = 2.0 ~ 2.5), dielectric loss Angle tangent is 0.0005 ~0.001, volume resistivity ye1014 ω.M, kuparara kwemunda simba zvakare rakakwirira kwazvo, 30MV/m;Mukuwedzera, kunyura kwemvura idiki kwazvo, saka PP inogona kushandiswa seyakakwira frequency insulation zvinhu.

Zvinhu zvishanu zvepolyester

Rudzi urwu rwezvinhu runoratidzwa neakakwira modulus, yakakwirira kubvarura kuramba, yakakwira kupfeka kuramba, kukwirira kwakadzika uye kuderera, muganho wepamusoro wetembiricha inoshanda ndeye 1500C, zvakanyanya kupfuura mamwe thermoplastic rabha, asi zvakare ine yakanakisa kuramba kwemafuta, kunyungudutsa. maitiro.