ABS
Hana o ABS
Hoʻokumu ʻia ʻo ABS me ʻekolu monomers kemika acrylonitrile, butadiene a me styrene. Mai ka hiʻohiʻona o ka morphology, ABS he mea non-crystalline, me ka ikaika mechanical kiʻekiʻe a me ka "ikaika, paʻakikī, kila" maikaʻi. He polymer amorphous, ʻo ABS he plastic engineering maʻamau, kona ʻano, hoʻohana ākea, ʻike ʻia hoʻi ʻo "plastic plastic", maʻalahi ka ABS e hoʻomoʻa i ka wai, ʻo 1.05g/cm3 ka nui o ke kaumaha ma mua o ka wai), haʻahaʻa haʻahaʻa. ka helu (0.60%), ka nui paʻa, ka hana hoʻoheheʻe maʻalahi.
ʻO nā hiʻohiʻona o ABS e hilinaʻi nui ʻia i ka ratio o nā monomers ʻekolu a me ke ʻano molekala o nā pae ʻelua. Hāʻawi kēia i ka loli nui i ka hoʻolālā huahana, a pēlā e hoʻopuka ai i nā haneli o nā mea ABS maikaʻi like ʻole ma ka mākeke. Hāʻawi kēia mau mea waiwai ʻokoʻa i nā hiʻohiʻona like ʻole, e like me ke kūpaʻa ʻana i ka hopena kiʻekiʻe, haʻahaʻa a kiʻekiʻe a me nā hiʻohiʻona distortion kiʻekiʻe. He machinability maikaʻi loa ka mea ABS, nā hiʻohiʻona hiʻohiʻona, ka haʻahaʻa haʻahaʻa, ke kūpaʻa maikaʻi loa a me ka ikaika hopena kiʻekiʻe.
ʻO ABS ka māmā melemele granular a i ʻole bead opaque resin, non-toxic, tasteless, haʻahaʻa wai absorption, he maikaʻi piha piha kino a me mechanical waiwai, e like me ka maikaʻi uila waiwai, aahu pale, dimensional paʻa, kemika kū'ē a me ka honua gloss, a maʻalahi ka hana. a me ke ano. ʻO nā hemahema ka pale ʻana i ke aniau, maikaʻi ʻole ke kū ʻana i ka wela, a hiki ke puhi ʻia.
Kaʻina hana o ABS
He kiʻekiʻe ka hygroscopiness a me ka haʻahaʻa o ka ABS. Pono e hoʻomaloʻo piha ʻia a preheated ma mua o ka hana ʻana a me ka hana ʻana (hoʻomaloʻo ma 80 ~ 90C no ka liʻiliʻi o 2 mau hola), a mālama ʻia ka maʻi ma lalo o 0.03%.
ʻO ka viscosity hehee o ka resin ABS ʻaʻole i maʻalahi i ka mahana (ʻokoʻa mai nā resins amorphous ʻē aʻe). ʻOiai ʻoi aku ka kiʻekiʻe o ka mahana injection o ABS ma mua o ka PS, ʻaʻole hiki ke loaʻa kahi ākea ākea e like me PS. ʻAʻole hiki ke hoʻemi ʻia ka viscosity o ABS e ka hoʻomehana makapō. Hiki ke hoʻomaikaʻi ʻia ka wai o ABS ma ka hoʻonui ʻana i ka wikiwiki o ka screw a i ʻole ke kaomi injection. He kūpono ka mahana hana maʻamau ma 190-235 ℃.
ʻO ka melting viscosity o ABS ka mea maʻamau, ʻoi aku ka kiʻekiʻe ma mua o ka PS, HIPS a me AS, a ʻoi aku ka kiʻekiʻe o ke kaomi injection (500-1000 bar).
ʻOi aku ka maikaʻi o nā mea ABS me ka wikiwiki a me ke kiʻekiʻe. (Inā ʻaʻole paʻakikī ke ʻano a koi ʻia nā ʻāpana ʻāpana ʻāpana i ka nui o ka injection), maʻalahi ka huahana e hana i nā laina kinoea ma ka waha.
He kiʻekiʻe ka mahana o ka hoʻoheheʻe ʻana o ABS, hoʻololi maʻamau ʻia kona ʻano wela ma 25-70 ℃. I ka hana ʻana i nā huahana ʻoi aku ka nui, ʻoi aku ka kiʻekiʻe o ka wela paʻa (mua o mua) ma mua o ka neʻe ʻana (mold hope) ma kahi o 5 ℃ kūpono. (E hoʻopilikia ka wela o ka ʻōpala i ka pau ʻana o nā ʻāpana plastik, e alakaʻi ka mahana haʻahaʻa i ka hopena haʻahaʻa)
ʻAʻole pono ʻo ABS e noho i loko o ka pahu wela kiʻekiʻe no ka lōʻihi (emi ma mua o 30 mau minuke), i ʻole e maʻalahi ka decompose a melemele.
Laulā noi maʻamau
ʻO nā kaʻa kaʻa (nā mea hana, nā puka hatch mea hana, nā uhi huila, nā pahu hoʻomanaʻo, a me nā mea ʻē aʻe), nā pahu hau, nā mea hana ikaika kiʻekiʻe (nā lauoho maloʻo, nā mea hui, nā meaʻai, nā mowers, a me nā mea ʻē aʻe). e like me nā kaʻa kolepa a me nā jet sledges a pēlā aku.
PMMA
Hana o PMMA
ʻO ka PMMA he polymer amorphous, i kapa ʻia ʻo plexiglass. Maikaʻi maikaʻi, pale wela maikaʻi (thermal deformation wela o 98 ℃), me nā hiʻohiʻona kūʻē hopena maikaʻi, kāna huahana o ka ikaika mechanical medium, haʻahaʻa haʻahaʻa paʻakikī, maʻalahi e ʻoki ʻia e nā mea paʻakikī a haʻalele i nā meheu, hoʻohālikelike ʻia me PS, ʻaʻole maʻalahi. māwae, ka umekaumaha kiko'ī o 1.18g/cm3. Loaʻa i ka PMMA nā hiʻohiʻona optical maikaʻi loa a me ka pale ʻana i ka wā. ʻO ke komo ʻana o ke kukui keʻokeʻo e like me 92%. He haʻahaʻa loa ka birefringence o nā huahana PMMA, kūpono loa no ka hana ʻana i nā disc wikiō. Loaʻa i ka PMMA nā ʻano kolo wela o ka lumi. Me ka piʻi ʻana o ka ukana a me ka manawa, hiki ke hoʻoulu ʻia ke kaumaha.
Kaʻina hana o ABS
ʻOi aku ka koʻikoʻi o ka hana ʻana o ka PMMA, ʻoi aku ka maʻalahi o ka wai a me ka mahana, ma mua o ka hoʻomaʻamaʻa ʻana a maloʻo loa (i ʻōlelo ʻia i nā kūlana maloʻo o 90 ℃, 2 a i 4 mau hola), ʻoi aku ka nui o kona viscosity melt, pono e hana i kahi kiʻekiʻe (225). -245 ℃) a me ke kaomi, make ka mahana ma 65-80 ℃ ʻoi aku ka maikaʻi. ʻAʻole paʻa loa ka PMMA, a hiki ke hoʻohaʻahaʻa ʻia e ka wela kiʻekiʻe a i ʻole ka noho lōʻihi ʻana i ka wela kiʻekiʻe. ʻAʻole nui ka wikiwiki o ka wili (60% a i ʻole), maʻalahi nā ʻāpana PMMA mānoanoa e ʻike i ka "cavity", pono e lawe i ka puka nui, "haʻahaʻa haʻahaʻa haʻahaʻa, kiʻekiʻe ka wela make, lohi wikiwiki" ke ʻano o ka injection e hana.
Laulā noi maʻamau
ʻO kaʻoihana kaʻa (nā lako kukui hōʻailona, nā mea kani a me nā mea'ē aʻe), kaʻoihana lāʻau (ʻo ka pahu mālama koko a me nā mea'ē aʻe), ka noiʻoihana (video disc, light scatterer), nā mea kūʻai (nā kīʻaha inu, nā mea kākau a pēlā aku).
Ka manawa hoʻouna: 23-11-22