Ethylene-vinyl acetate(EVA), i ʻike ʻia ʻopoli (ethylene-vinyl acetate)(PEVA), ʻo ia ka copolymer o ka ethylene a me ka vinyl acetate.ʻO ka pākēneka kaumaha o ka vinyl acetate maʻamau mai 10 a 40%, me ke koena he ethylene.ʻEkolu mau ʻano like ʻole o ka EVA copolymer, ʻokoʻa i ka ʻike vinyl acetate (VA) a me ke ʻano o ka hoʻohana ʻana i nā mea.
EVA waiʻO ka membrane kahi ʻano mea pepa maʻalahi i hana ʻia ma o ke ʻano o nā kaʻina hana e like me ka hoʻohālikelike ʻana, ka hoʻoluʻu, ka hoʻāʻo ʻana, ka hoʻopili ʻana a me ka hoʻopili ʻana, me ka ethylene vinyl acetate copolymer ma ke ʻano he kumu nui, i hui pū ʻia me ka nui o nā modifiers, antioxidants, ultraviolet absorbers, colorants. , mea hoʻopiha, plasticizers, etc.
EVA waiHōʻike ʻia ka membrane e ke kūʻē maikaʻi ʻana i ke koʻikoʻi o ke kaiapuni, ka paʻakikī maikaʻi, ke kū ʻana o ka wā, ka haʻahaʻa haʻahaʻa haʻahaʻa, ka elasticity ikaika, ke kūʻē ʻana i ke koʻikoʻi, ka maʻalahi, ka ikaika kiʻekiʻe, ka gravity kikoʻī liʻiliʻi, ka elongation kiʻekiʻe, ka waiho ʻana, ʻaʻohe displacement, etc. pili i nā ʻano ana o lalo o ka honua, tunnels, subways, municipal construction and other watering and seepage-proofing works.
| Nā mea | |||
| FS2 | JS2 | ||
| Ikaika U'i | Ka wela maʻamau (23 ℃) | 60(N/cm) | 16(MPa) |
| Ka wela kiʻekiʻe (60 ℃) | 30(N/cm) | 6(MPa) | |
| ʻO ka hoʻolōʻihi i ka wā hoʻomaha | Ka wela maʻamau (23 ℃) | 400 | 550 |
| Haʻahaʻa wela (-20 ℃) | 300 | 350 | |
| Haehae ikaika | 50(N) | 60(KN/m) | |
| ʻAʻohe (0.3MPa, 30min) | ʻAʻohe leakage | ʻAʻohe leakage | |
| Piʻo haʻahaʻa wela | -20 ℃ ʻAʻohe māwae | -35 ℃ ʻAʻohe māwae | |
| Nā memo: | |||
| mānoanoa | 30mil(0.8mm),40mil(1.0mm),50mil(1.2mm),60mil(1.5mm),80mil(2.0mm) Hoʻopilikino ʻia. | ||
| Ka lōʻihi o ka ʻōwili | 20m | ||
| Laulā oloka | 2m | ||
| L ype | He kūpono nā wili kākoʻo fiber no nā ʻōnaehana hoʻopaʻa paʻa kumu a i ʻole nā ʻōnaehana hoʻopaʻa mīkini. | |||||
| ʻAno P | He kūpono ka coil i hoʻoikaika ʻia no ka ʻōnaehana wai paʻa mechanical. | |||||
| ʻAno H | He kūpono ka coil homogeneous no ka hoʻoheheʻe ʻana a me ka hana node maikaʻi. | |||||
Nā hana o ke kaona: ke kahua kaʻaahi a me ke kaila holo kaʻaahi.
ʻO ka hana maʻalahi, maʻalahi ka wili.
