PE mapaipivava pamusika, uye vatove chigadzirwa chakajairika, kunyanya avo vari muindasitiri.Kana mapaipi ePE ataurwa, anobva afunga nezvekupfeka kuramba, kudzvanywa, kuramba kwecorrosion uye hupenyu hurefu hwebasa.Kune akawanda PE mapaipi.Mhando, mbishi zvinhu PE zvakakamurwawo mumhando dzakawanda, iyo yakagadzirwa PE pombi zvigadzirwa zvakakamurwa kuva marudzi mazhinji, yanhasi yakadzama tsananguro yakazara, ndeupi musiyano pakati pezviyero zvePE80 pombi uye PE100 pombi?
PE zvinhu ndeye polyethylene, iyo yakasiyana-siyana yepurasitiki zvinhu.Icho chinhu chepolymer chakagadzirwa kubva ku polyethylene.
Yakakamurwa muzvikamu zviviri: yakaderera density polyethylene LDPE (yakaderera simba);high density polyethylene HDPE.Zvishandiso zvePE zvakakamurwa kuita mamakisi mashanu zvichienderana nepasi rose zvakabatana mwero: giredhi rePE32, giredhi rePE40, giredhi rePE63, giredhi rePE80 uye giredhi rePE100.
Kugadzirwa kwemapombi ePE epombi dzekupa mvura ndeye high-density polyethylene (HDPE), uye mamakisi ayo PE80 uye PE100 (maererano nekudimburirwa kweMinimum Rinodiwa Simba, MRS).Iyo MRS yePE80 inosvika 8MPa;iyo MRS yePE100 inosvika 10MPa.MRS inoreva hoop tensile stress simba yepombi (yakaverengerwa kukosha kwakaedzwa zvinoenderana nepasi rose mwero).
PE80 (8.00～9.99Mpa) is a masterbatch ine antimony trioxide content ye80% pa polyethylene substrate, inogona kunyanya kushandiswa mukukanda nekugadzira firimu panguva imwe chete.Iyo granular yemahara-inoyerera guruva-isina masterbatch yakachengeteka mukugadzirwa pane yechinyakare hupfu, iri nyore kubata dosage, uye zvakare inoonekwa seyakajairwa-chinangwa masterbatch, iyo yakasununguka-inoyerera mune granular fomu.
PE100 (10.00～11.19Mpa) ndiyo nhamba yemagiredhi anowanikwa nekutenderedza hushoma hunodiwa simba (MRS) re polyethylene raw materials.Zvinoenderana neGB/T18252, iyo hydrostatic simba rezvinhu zvinoenderana ne20 ℃, 50 makore uye mukana wakafanotaurwa we97.5% unotemerwa maererano neGB/T18252.σLPL, shandura iyo MRS, uye wedzera iyo MRS negumi kuti uwane nhamba yemhando yezvinhu.
Kana mapaipi uye zvigadziriso zvinogadzirwa kubva kumagiredhi akasiyana e polyethylene raw materials zvichizobatanidzwa, majoini acho anozoiswa muyedzo yehydraulic.Kazhinji, PE63, PE80, PE100 misanganiswa ine melt flow rate (MFR) (190 ° C / 5kg) pakati pe 0.2g / 10min uye 1.3g / 10min inofanira kuonekwa seyakasanganiswa uye inogona kubatanidzwa kune mumwe nemumwe.Raw materials kunze kweiyi siyana inoda kuongororwa kuti ione.
1. Chii chinonzi PE100 polyethylene pombi?
Kuvandudzwa kwezvinhu zvepombi yepolyethylene kunozivikanwa sekukamurwa kuita zvizvarwa zvitatu, zvinoti matanho matatu ekukura:
Chizvarwa chekutanga, yakaderera-density polyethylene uye "rudzi rwekutanga" yakakwira-density polyethylene, ine kusashanda zvakanaka uye yakaenzana neyezvino polyethylene pombi zvinhu pazasi PE63.
Chizvarwa chechipiri, chakaonekwa kumakore ekuma1960, chiri chepakati-density polyethylene pombi zvinhu zvine simba renguva refu re hydrostatic uye kutsemuka kuramba, iyo yava kunzi PE80 giredhi polyethylene pombi zvinhu.
Chizvarwa chechitatu, icho chakaonekwa muma1980, chinonzi chizvarwa chechitatu polyethylene pombi yakakosha zvinhu PE100.PE100 zvinoreva kuti pa20°C, pombi yepolyethylene inogona kuramba iine simba shoma rinodiwa MRS re10MPa mushure memakore makumi mashanu, uye ine kuramba kwakanakisa kukurumidza kutsemuka kukura.
2. Ndezvipi zvakakosha zve PE100 polyethylene pipe?
PE100 ine zvese zvakanakisa zvivakwa zve polyethylene, uye michina yayo inovandudzwa zvakanyanya, izvo zvinoita kuti PE100 ive nezvakawanda zvakakosha uye inoshandiswa mune mamwe minda.
2.1 Kunyanya kudzvinyirira kuramba
Nokuti PE100 resin ine simba shoma rinodiwa re10MPa, yakasimba kudarika mamwe ma polyethylenes, uye gasi uye mvura inogona kutakurwa pasi pekumanikidzwa kukuru;
2.2 Mudhuri mutete
Pasi pesimba rekushanda rakajairwa, madziro epombi akagadzirwa nePE100 zvinhu anogona kutetepa zvakanyanya.Pamapaipi emvura makuru-diameter, kushandiswa kwepaipi yakaonda-yakakomberedzwa inogona kuchengetedza zvinhu uye kuwedzera nzvimbo yepamuchinjikwa-chikamu chepombi, nokudaro kuwedzera simba rekufambisa kwepombi.Kana simba rekufambisa richigara riripo, kuwedzera kwechikamu chemuchinjiko kunotungamirira kukudzikira kweyero yekuyerera, kuitira kuti kufambisa kugone kuitika nepombi yemagetsi diki, asi mutengo unochengetwa.
2.3 Yakakwirira kuchengetedza chinhu
Kana iyo pombi yakakura kana kudzvanywa kwekushanda kwatsanangurwa, iyo yekuchengetedza iyo PE100 inogona kuve nechokwadi inovimbiswa mune yanhasi yakasiyana-siyana polyethylene piping series.
2.4 Kuoma kwepamusoro
PE100 zvinhu zvine elastic modulus ye1250MPa, iyo yakakwira kupfuura 950MPa yeyakajairwa HDPE resin, inoita kuti PE100 pombi ive nepamusoro mhete kuoma.
3. Mechanical properties yePE100 resin
3.1 Simba Risingaperi
Simba rekutsungirira rakagadziriswa nekumanikidza kuedza mitsara pakupisa kwakasiyana (20 ° C, 40 ° C, 60 ° C uye 80 ° C).Pa20 ℃, PE100 resin inogona kuchengetedza simba re10MPa mushure memakore makumi mashanu, (PE80 is 8.0MPa).
3.2 Kushushikana kwakanaka kwekurambana
PE100 polyethylene pombi yakakosha zvinhu ine yakanaka kuramba kushushikana kutsemuka, kunonoka kuitika kwekunetsekana kutsemuka (> 10000 maawa), uye inogona kunonoka kweanopfuura makore zana pasi pemamiriro e20 ℃.
3.3 Kupokana kwakakosha kukurumidza kukura kwekutsemuka
Chinodiwa chekukwanisa kurwisa kukurumidza kukura kwekutsemuka kunomisa kushandiswa kwechinyakare polyethylene pombi: yegasi, iyo yekumanikidza muganho ndeye 0.4MPa, uye yekuunza mvura, i1.0MPa.Nekuda kwekugona kunoshamisa kwePE100 kupikisa kukurumidza kukura kwekutsemuka, iyo yekumanikidza mugasi wegasi network inowedzerwa kusvika 1.0MPa (1.2MPa yakashandiswa muRussia uye 1.6MPa mumvura yekutapurirana network).Mukutaura, kushandiswa kwePE100 polyethylene zvinhu mumapaipi kuchave nechokwadi kuti maitiro ekushanda kwepe100 pombi dzemvura mupombi network zvakachengeteka, zvakanyanya hupfumi uye zvine hupenyu hurefu hwebasa.
Nhungamiro: http://www.chinapipe.net/baike/knowledge/15022.html
Nguva yekutumira: Nov-04-2022
