Ịhọrọ ezigbo polypropylene (PP) maka ụlọ mposi nwa ma ọ bụ ụmụaka abụghị naanị mkpebi dị egwu - ọ bụ nkwụsi ike na ntinye aka nke na-egosi na ule nkwụsị, hichapụ cycles, na nchekwa nchekwa. Ọ bụrụ na ị hụla ka ọnụ ụlọ oyi na-adaba na-emebi ụdịdị dị mma, ị maara ihe kpatara mmetụta ọnọdụ okpomọkụ dị n'ebe ugwu maka ụdị a. Ntuziaka a na-atụgharị eziokwu ahụ ka ọ bụrụ usoro nhọpụta na nkwenye ọzọ ị nwere ike iji ndị na-ebubata na ụlọ nyocha rụọ ọrụ.
Isi ihe na-ewe
Jiri akụkọ ndị ọzọ dị ugbu a dị ka ọkpụkpụ nkwado gị, wee mapụta ha na CPSIA/ASTM na EN 71 3 iji kwado oke na oghere.
Mmetụta ihu ọma copolymer PP akara ule maka obere ihe siri ike; tọọ ebumnuche nnabata nke ọma na -10 Celsius C site na iji ISO 179/ASTM D256 yana kpọkọta ule dobe akụkụ.
Gosipụta nguzogide kemịkalụ na ASTM D543 yana mgbawa nrụgide na ISO 22088; re ule mmetụta mgbe ikpughe na validate ezigbo ụwa ihicha.
Welie oke ngafe site na imewe maka nrụpụta: mgbidi otu, oke ọgịrịga kwesịrị ekwesị, radii na-emesapụ aka, na njikwa ahịrị weld.
Kpochie n'ịdị mma site na iji usoro arụ ọrụ emebere (prototype → EVT/DVT → PPAP/PVT) yana nhazi akwụkwọ ndị na-ebubata ihe nyocha.
Map ndakọrịta na akụkọ ndị ọzọ
Mgbe ntọala bụ "jiri akụkọ ndị ọzọ nke ika dị ugbu a," ọrụ gị bụ ịhazigharị ihe akaebe na ikpughe oghere ngwa ngwa. Tinye maapụ gị n'ogidi atọ:
CPSIA maka kemistri na ngwaahịa ụmụaka. Ngụkọta ndu ndu US bụ 100ppm maka ngwaahịa ụmụaka, yana led na agba/mkpuchi ka edobere na 90ppm—lee akụrụngwa nke onye nhazi na CPSC Total Lead Content FAQ na ederede iwu na eCFR 16 CFR Nkebi 1303: Lead na Paint.
TS EN 71 3 (EU / UK) maka mbugharị nke ụfọdụ ihe sitere na ihe egwuregwu ụmụaka. Jiri akụkọ ụlọ nyocha enwetara nke na-akọwapụta udi I-III wee depụta nsonaazụ n'otu akụkụ. Maka ọnọdụ mmelite, lee nyocha TÜV's EN 71 3:2019+A1:2021.
FDA 21 CFR 177.1520 (nhọrọ ịdị ọcha benchmark). Ọ bụ ezie na ọ bụghị iwu maka ụlọ mposi ụmụaka na-abụghị nri, ọtụtụ ụdị na-ahọrọ kọntaktị nri PP maka elu na ikpughe mmiri. Kwenye ụdịdị/ihe mgbakwunye polima na ọnọdụ mmịpụta ekwenyere na ntinye mgbakwunye na-apụtaghị ìhè nke FDA maka polypropylene.
Otu esi agụ akụkọ nke ọma:
Kwenye nkọwa nlere anya na agba ebumnuche mmepụta dakọtara na masterbatches.
Nyochaa nzere ụlọ nyocha, NJ mkpesa, ụbọchị ule na mbipụta ọkọlọtọ.
Ọdịiche dị iche iche rịba ama (dịka ọmụmaatụ, EN 71 3 A nwalere udi, CPSIA phthalate panel obosara) yana nhazi atụmatụ n'ihu DVT.
Nhọrọ ọkwa PP maka nhọrọ ụlọ mposi nwa PP na-adịgide adịgide
Mmetụta okpomọkụ dị ala bụ ime ma ọ bụ mebie ihe maka ụdị a. Homopolymer PP na-esi ike mana ọ na-eme ka ọ na-agbake n'akụkụ na-ekpo ọkụ. Mmetụta copolymer PP (ICP) na-agbasa usoro rubbery nke na-eme ka ike sie ike na 0 ruo -20 Celsius. Azụmahịa ahụ kwụ ọtọ: ICP maka nguzogide ịdaba, ejiri geometry na nhazi mee ka ọ dịgidesie ike maka ntọala oche, ọkwá, na ọgịrịga nhazi.
Homo vs. mmetụta copolymer na ebumnuche
Chee echiche banyere homopolymer dị ka onye na-achị ọnụ gị kwụ ọtọ - siri ike ma dị mma - ebe ICP bụ ihe na-akpata ujo. Maka akụkụ agbakọtara, adaberela na ọnụ ọgụgụ okpomọkụ ụlọ datasheet. Tọọ ebumnuche nkwenye ziri ezi na ọnọdụ oyi:
Achọpụtara Charpy ISO 179 na -10 Celsius C: 6-10 kJ/m² n'elu mbadamba nkume a kpụrụ akpụ, ahọpụtara kwa ọkwa na atụmatụ mgbidi/ọgịrịga.
Nleba anya nleba anya na -10 Celsius C: nhazi atọ (mpịakọta rim, akuku, flat) × atọ tụlee nke ọ bụla site na ~ 1.0 m na ihe; enweghị mgbape ma ọ bụ hinge/onyeisi ọdịda.
Akara akara ụwa n'ezie: akara ule heterophasic ICP na-ebipụtakarị ụkpụrụ Charpy dị obere na mpempe akwụkwọ data ha. Jiri nọmba ndị ahụ mepụta atụmanya, wee kwado ịrụ ọrụ site na iji mpempe akwụkwọ a kpụrụ akpụ na akụkụ gbakọtara.
PP nhọrọ | Uru | Cons | Ojiji eji eme ihe |
Homopolymer PP (HPP) | Isi ike dị elu, ezigbo gloss, ọnụ ala dị ala | Na-akụrikasị nso 0 Celsius C, nwere mmetụta nke ọma | Ihe mkpuchi na-abụghị usoro, ngwa |
Mmetụta Copolymer PP (ICP) | Siri ike na obere oge efu, nkwụsi ike daa ka mma | Isi ike dị ntakịrị, ọgụ nwere ike ime ma ọ bụrụ na esighị ya mma n'otu | Ebe oche, ọkwá, shells na-ebu ibu |
ICP + nucleator | Ọsọ ọsọ ọsọ, morphology a nụchara anụcha | Nwere ike ịzụ ahịa ụfọdụ mmetụta ma ọ bụrụ na ịdoụbiga ya ókè | Akụkụ mgbidi dị mkpa chọrọ itule |
ICP nwere mmetụta mgbanwe | Mgbakwunye ike na oyi | Ọnụ / mgbakwunye njikwa; nyochaa DoC | Agbụ oyi ma ọ bụ oyi na-eji SKU |
Nyocha injinia: mmetụta, nguzogide kemịkalụ, na ESC
Nkwenye akwụkwọ anaghị adị ndụ ọgịrịga gbawara agbawa ma ọ bụ onye isi na-agba ara. Gosipụta arụmọrụ site na iji kọmpat, matriks ụlọ nyocha enwere ike imepụtagharị:
Mmetụta siri ike
Usoro: ISO 179 (notched Charpy) ma ọ bụ ASTM D256 (Izod) na 23 Celsius C na -10 Celsius C n'elu plaque a kpụrụ akpụ site na imepụta ebumnuche ngwá ọrụ / nhazi windo.
Nnabata: -10ºC enweghị mmetụta ≥ ahọpụtara ọnụ ụzọ (6–10 kJ/m²) yana ngafe ule dobe gbakọtara na-enweghị mgbawa.
Nguzogide kemịkalụ (ndị na-ehicha ihe/ngwọ ọrịa)
Usoro: ASTM D543 imikpu ma ọ bụ hichapụ ikpughe site na iji ihe nchacha na-egbu egbu (dịka ọmụmaatụ, quats, peroxide, bleach diluted). Ezipụta ntinye uche, okpomọkụ, na oge; tụọ mgbanwe uka/n'akụkụ wee nwale mmetụta ọzọ.
Nnabata: ≥80% njide ike mmetụta vs. njikwa; enweghị ọzịza ma ọ bụ ịcha ọcha karịrị usoro ịchọ mma.
Mgbawa nrụgide gburugburu ebe obibi (ESC)
Usoro: ISO 22088 n'okpuru na-ehulata / tensile nsogbu na 1-2% surfactant na 23 Celsius C na 40 Celsius. Dekọọ oge ịgbawa mbụ na F50.
Nnabata: Enweghị mgbawa a na-ahụ anya na 10 × ịdị ukwuu karịa oge ule; lekwasịrị anya F50 ≥ 24–72 h dabere na nzọrọ ọkwa na ịdị mkpa geometry.
Nyochaa eziokwu nke ego: Mgbe mkpughe kemịkalụ/ESC gasịrị, megharịa mmetụta -10 Celsius C na Kupọns yana otu okirikiri dobe gbakọtara. Nke ahụ bụ otu ị ga-esi enweta ọcha nrụgide na-atụgharị na nloghachi ụtụtụ Satọde.
DfM na-ebuli ọnụego ngafe nleba anya
Ike okpomọkụ dị ala na-amalite site na nhọrọ ọkwa, mana geometry na-akpọchi n'akụkụ.
Ọkpụrụkpụ mgbidi: Debe ya otu. Maka PP, mgbidi ọnụ gburugburu 0.6-3.8 mm na-arụ ọrụ nke ọma; zere nnukwu akụkụ> 5 mm nke na-ejide okpomọkụ na nrụgide.
Ribs na-ewusi ike na-enweghị ịmepụta sinks: nha nha na ~ 50-70% nke mgbidi ọnụ, ịdị elu ≤3 × mgbidi, na-enye radii na-emesapụ aka na ntọala (~ 0.25 × mgbidi).
Radii na fillets: Ebumnuche maka mgbidi ≥0.5 × na nkuku dị n'ime na ngwakọta intersecting ribs; nke a na-ebelata mmetụta uche nke na-egosi na mmiri oyi.
Atụmatụ ọnụ ụzọ ámá na ahịrị weld: Debe ọnụ ụzọ iji mee ka ahịrị weld pụọ na mpaghara ibu dị elu; jiri ọtụtụ ọnụ ụzọ ámá dabara adaba ma ọ bụ ọnụ ụzọ fan/ọnụ ụzọ. Jiri nyocha nrịbama kwado ma gosi na nlegharị anya kwatuo mgbe ule dara ada.
Window dị jụụ na nhazi: Ọwa jụrụ oyi dabara adaba yana mkpọ/jide edebere na-ebelata oghere yana n'elu mbukota n'akụkụ. Sochie okpomoku gbazere/akpụzi yana ọsọ ntụtụ n'otu akwụkwọ data ọkwa ọkwa n'oge nkwenye.
Nnwale usoro ọrụ yana ọnụ ụzọ nnabata site na prototype gaa na mmepụta oke
Ụdị ụdị (T0-T1)
Mpempe akwụkwọ mpempe akwụkwọ na kupọns geometry dị egwu na akara ule 2–3 ICP nwere usoro dị iche iche (MFR). Mepụta ntọala ISO 179/ASTM D256 na 23 Celsius na -10 Celsius; na-agba ọsọ ngwa ngwa ihuenyo D543 na eleghi anya Cleaners.
Injinia na-ewuli elu (EVT/DVT)
Mejuputa ọgịrịga/radius/weld line ndozi; jiri ihe surfactants dị mkpa na eriri etinyere rụọ ọrụ ISO 22088 ESC. Na-eme ule nleba anya -10 Celsius C n'ofe nghazi. Megharịa windo na gating ka ọ dị mkpa.
PPAP/PVT ma malite
Mkpọchi akwụkwọ ebubata (DoC, CoA, SVHC/DoP, ndị ọzọ EN 71 3/CPSIA ID). Kwenye oke agba agba. Kpochapụ njirisi nnabata yana AQL na-abata nwere ntụpọ -10 Celsius C na-elele na Kupọns kpụrụ akpụ.
Ihe atụ obere bara uru (akara nchekwa)
Nke a bụ ka enwere ike ịdepụta nhazi akwụkwọ ndị na-ebubata ihe na-enweghị hype. Ka e were ya na onye na-ebubata gị na-enye akụkọ nke ndị ọzọ na-ekpuchi EN 71 3 (nke ekwuru na ngalaba), mkpokọta CPSIA na phthalates, yana nkwupụta nri kọntaktị PP dabara na FDA 21 CFR 177.1520. Ị ga-:
Nyochaa NJ akụkọ ọ bụla, aha ụlọ nyocha akwadoro, na ụbọchị; dakọtara sample agba / masterbatch na otutu.
Crosswalk EN 71 3 rụpụtara na udi ziri ezi wee lelee ihe ndị nwere oke dị warara maka oke.
Kwenye CPSIA: ngụkọta ndu ≤100 ppm na agba/ mkpuchi ≤90 ppm ebe ọdabara; nyochaa akụkụ phthalate zuru ezu (≤0.1%).
Ọ bụrụ na enyere nkwupụta PP kọntaktị nri, nyochaa ọnọdụ mmịpụta dabara na §177.1520 yana ndị adjuvant na-ezo aka na ngalaba ziri ezi.
Kedu ihe ịzụrụ kwesịrị ịrịọ n'ụbọchị mbụ
Nkwupụta nke nnabata (oke ngwaahịa ụmụaka): EN 71 3 Nkeji kwuru; mkpuchi CPSIA maka ndu yana panel phthalate na-adịgide adịgide; colorant/masterbatch DoC.
Akụkọ ndị ọzọ: EN 71 3 (ndepụta mmewere zuru oke nwere nkeji), CPSIA (lead/phthalates) nwere NJ akụkọ, aha ụlọ nyocha, ụbọchị na nkọwa nlele; nkwupụta FDA 21 CFR 177.1520 ọ bụla maka akara ule PP ahọpụtara.
Ihe na traceability: PP ọkwa ID (homopolymer vs. ICP), SDS, REACH SVHC nkwupụta, batch CoA, molding records (MFR, usoro windo), na n'ụlọ ule protocols/nsona maka mmetụta, D543, na ISO 22088.
Ntụ aka na gburugburu
Oke kemistri US: CPSC Mkpokọta Ọdịnaya Lead FAQ (ngwaahịa ụmụaka, 100 ppm); eCFR 16 CFR Nkebi 1303 (edu na agba, 90 ppm).
Mbugharị egwuregwu ụmụaka EU/UK: Nyocha TÜV nke EN 71 3:2019+A1:2021.
Nri FDA kọntaktị PP: ntinye ihe mgbakwunye na-apụtaghị ìhè FDA maka polypropylene.
