{"id":4202,"date":"2024-01-18T03:18:56","date_gmt":"2024-01-18T03:18:56","guid":{"rendered":"https:\/\/longchangchemical.com\/?post_type=product&p=4202"},"modified":"2025-12-17T04:16:20","modified_gmt":"2025-12-17T04:16:20","slug":"n-methylformamide-cas-123-39-7","status":"publish","type":"product","link":"https:\/\/longchangchemical.com\/hu\/product\/n-methylformamide-cas-123-39-7\/","title":{"rendered":"n-metilformamid cas 123-39-7"},"content":{"rendered":"

N-metil-formamidT\u00edpusos tulajdons\u00e1gok<\/strong><\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
T\u00e9tel<\/td>\nM\u0171szaki adatok<\/td>\nEredm\u00e9nyek<\/td>\n<\/tr>\n
Megjelen\u00e9s<\/td>\nSz\u00edntelen \u00e1tl\u00e1tsz\u00f3 folyad\u00e9k<\/td>\nSz\u00edntelen \u00e1tl\u00e1tsz\u00f3 folyad\u00e9k<\/td>\n<\/tr>\n
Assay<\/td>\n\u226599.5%<\/td>\n99.69%<\/td>\n<\/tr>\n
V\u00edztartalom<\/td>\n\u22640,050%<\/td>\n0.019%<\/td>\n<\/tr>\n
Sz\u00edn ( Pt-Co)<\/td>\n\u22645<\/td>\n5<\/td>\n<\/tr>\n
Metanol %<\/td>\n\u22640.10<\/td>\n0.050<\/td>\n<\/tr>\n
Amm\u00f3nia %<\/td>\n\u22640.010<\/td>\n0.002<\/td>\n<\/tr>\n
Hangyasav %<\/td>\n\u22640.010<\/td>\nNincs<\/td>\n<\/tr>\n
Amm\u00f3nium-formi\u00e1t %<\/td>\n\u22640.080<\/td>\n0.030<\/td>\n<\/tr>\n
K\u00f6vetkeztet\u00e9s<\/td>\nAz eredm\u00e9nyek megfelelnek a v\u00e1llalati szabv\u00e1nyoknak<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

N-metil-formamid Haszn\u00e1lat<\/strong><\/h2>\n

Ez a term\u00e9k fontos szerves k\u00e9miai nyersanyag \u00e9s k\u00f6ztes term\u00e9k, \u00e9s j\u00f3 szerves old\u00f3szer. Nagy hat\u00e9konys\u00e1g\u00fa \u00e9s alacsony toxicit\u00e1s\u00fa egym\u00f3dszeres, kett\u0151s tej \u00e9s \u00edgy tov\u00e1bb szintetiz\u00e1l\u00e1s\u00e1ra haszn\u00e1lj\u00e1k. A szerves szint\u00e9zishez reakci\u00f3old\u00f3szerk\u00e9nt \u00e9s tiszt\u00edtott old\u00f3szerk\u00e9nt haszn\u00e1lj\u00e1k. Szint\u00e9n sz\u00e9les k\u00f6rben haszn\u00e1lj\u00e1k az orvostudom\u00e1nyban, a sz\u00ednez\u00e9kekben, a f\u0171szerekben \u00e9s az elektrol\u00edzisben, a galvaniz\u00e1l\u00f3 iparban.<\/p>\n

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  1. \n

    K\u00e9miai szint\u00e9zis:<\/strong> Az N-metilformamidot gyakran alkalmazz\u00e1k old\u00f3szerk\u00e9nt gy\u00f3gyszerek, agrok\u00e9miai anyagok \u00e9s k\u00fcl\u00f6nb\u00f6z\u0151 szerves vegy\u00fcletek szint\u00e9zis\u00e9ben. K\u00fcl\u00f6n\u00f6sen hasznos olyan reakci\u00f3kban, amelyekben amidok \u00e9s m\u00e1s nitrog\u00e9ntartalm\u00fa vegy\u00fcletek k\u00e9pz\u0151dnek.<\/p>\n<\/li>\n

  2. \n

    Polimeripar:<\/strong> Polimerek, p\u00e9ld\u00e1ul poliuret\u00e1nok \u00e9s poliakrilnitril el\u0151\u00e1ll\u00edt\u00e1s\u00e1ra haszn\u00e1lj\u00e1k. Bizonyos sz\u00e1lak \u00e9s gyant\u00e1k el\u0151\u00e1ll\u00edt\u00e1sa sor\u00e1n az N-metil-formamid old\u00f3szerk\u00e9nt \u00e9s reakci\u00f3k\u00f6zegk\u00e9nt szolg\u00e1l.<\/p>\n<\/li>\n

  3. \n

    Gy\u00f3gyszerek:<\/strong> A vegyi anyagot a gy\u00f3gyszeriparban akt\u00edv gy\u00f3gyszerhat\u00f3anyagok (API-k) \u00e9s egy\u00e9b k\u00f6ztes term\u00e9kek szint\u00e9zis\u00e9re haszn\u00e1lj\u00e1k. Megk\u00f6nny\u00edti az amidcsoportok molekul\u00e1kba t\u00f6rt\u00e9n\u0151 bevezet\u00e9s\u00e9vel j\u00e1r\u00f3 reakci\u00f3kat.<\/p>\n<\/li>\n

  4. \n

    Textilfeldolgoz\u00e1s:<\/strong> Az N-metil-formamidot a textiliparban a sz\u00e1lak fon\u00e1s\u00e1hoz haszn\u00e1lt old\u00f3szerk\u00e9nt alkalmazz\u00e1k, k\u00fcl\u00f6n\u00f6sen az olyan szintetikus sz\u00e1lak, mint az akril \u00e9s a modakril el\u0151\u00e1ll\u00edt\u00e1s\u00e1hoz.<\/p>\n<\/li>\n<\/ol>\n

    N-metil-formamid Csomagol\u00e1s<\/strong><\/h2>\n

    1kg\/bpttle, 200kg\/dob<\/p>\n

    L\u00e9pjen kapcsolatba vel\u00fcnk most!<\/b><\/strong><\/h2>\n

    Ha COA, MSDS vagy TDS-re van sz\u00fcks\u00e9ge, k\u00e9rj\u00fck, t\u00f6ltse ki el\u00e9rhet\u0151s\u00e9g\u00e9t az al\u00e1bbi \u0171rlapon, \u00e1ltal\u00e1ban 24 \u00f3r\u00e1n bel\u00fcl felvessz\u00fck \u00d6nnel a kapcsolatot. \u00d6n is k\u00fcldhet nekem e-mailt info@longchangchemical.com<\/a><\/span> munkaid\u0151ben ( 8:30-18:00 UTC+8 H.-Szombat ) vagy haszn\u00e1lja a weboldal \u00e9l\u0151 chatj\u00e9t, hogy azonnali v\u00e1laszt kapjon.<\/b><\/strong><\/h4>\n

     <\/p>\n

    <\/p>\n

    Milyen hat\u00e1ssal van a kataliz\u00e1tor a habz\u00e1sra?<\/p>\n

    A poli\u00e9ter, mint f\u0151 nyersanyag, izocian\u00e1ttal reag\u00e1lva uret\u00e1nt hoz l\u00e9tre, amely a habterm\u00e9kek v\u00e1zreakci\u00f3ja. Azonos funkcionalit\u00e1s eset\u00e9n a molekulat\u00f6meg n\u0151, a hab szak\u00edt\u00f3szil\u00e1rds\u00e1ga, ny\u00fal\u00e1sa \u00e9s rugalmass\u00e1ga n\u0151, \u00e9s az azonos t\u00edpus\u00fa poli\u00e9ter reakci\u00f3aktivit\u00e1sa cs\u00f6kken; azonos egyen\u00e9rt\u00e9k\u0171 \u00e9rt\u00e9k (molekulat\u00f6meg\/funkcionalit\u00e1s) eset\u00e9n a funkcionalit\u00e1s n\u0151, a reakci\u00f3 viszonylag felgyorsul, \u00e9s a keletkez\u0151 uret\u00e1n t\u00e9rh\u00e1l\u00f3sod\u00e1si foka javul, \u00e9s a hab kem\u00e9nys\u00e9ge n\u0151, a ny\u00fal\u00e1s sebess\u00e9ge pedig cs\u00f6kken. A poliol \u00e1tlagos off-energi\u00e1j\u00e1nak 2,5 f\u00f6l\u00f6tt kell lennie, ha az \u00e1tlagos off-energia t\u00fal alacsony, a habtest rosszul regener\u00e1l\u00f3dik a nyom\u00e1s ut\u00e1n.<\/p>\n

    Ha a poli\u00e9ter d\u00f3zisa magas, akkor ez egyen\u00e9rt\u00e9k\u0171 a t\u00f6bbi nyersanyag (TDI, v\u00edz, kataliz\u00e1tor stb.) cs\u00f6kkent\u00e9s\u00e9vel, ami k\u00f6nnyen okozhatja a habterm\u00e9kek reped\u00e9s\u00e9t vagy \u00f6sszeoml\u00e1s\u00e1t. Ha a poli\u00e9ter adagol\u00e1sa kicsi, a habterm\u00e9kek kem\u00e9nyek, a rugalmass\u00e1g cs\u00f6kken, \u00e9s a k\u00e9z\u00e9rzet rossz. 1\u3001Habos\u00edt\u00f3<\/p>\n

    \u00c1ltal\u00e1ban a 21-n\u00e9l nagyobb s\u0171r\u0171s\u00e9g\u0171 poliuret\u00e1n t\u00f6mbhab gy\u00e1rt\u00e1sa sor\u00e1n csak vizet (k\u00e9miai f\u00fav\u00f3anyag) haszn\u00e1lnak f\u00fav\u00f3anyagk\u00e9nt, az alacsony s\u0171r\u0171s\u00e9g\u0171 k\u00e9sz\u00edtm\u00e9nyekben vagy az ultral\u00e1gy k\u00e9sz\u00edtm\u00e9nyekben a metil\u00e9n-klorid (MC) \u00e9s m\u00e1s alacsony forr\u00e1spont\u00fa vegy\u00fcletek (fizikai f\u00fav\u00f3anyag) seg\u00e9df\u00fav\u00f3anyagk\u00e9nt t\u00f6rt\u00e9n\u0151 haszn\u00e1lata el\u0151tt. A seg\u00e9df\u00fav\u00f3szer cs\u00f6kkenti a hab s\u0171r\u0171s\u00e9g\u00e9t \u00e9s kem\u00e9nys\u00e9g\u00e9t, \u00e9s a reakci\u00f3h\u0151 egy r\u00e9sz\u00e9nek g\u00e1zos\u00edt\u00e1s\u00e1val t\u00f6rt\u00e9n\u0151 elnyel\u00e9se miatt a kem\u00e9nyed\u00e9s lelassul, ami a kataliz\u00e1tor adagj\u00e1nak n\u00f6vel\u00e9s\u00e9t ig\u00e9nyli. A h\u0151elnyel\u00e9s miatt elker\u00fclhet\u0151 a mag\u00e9g\u00e9s vesz\u00e9lye. A habk\u00e9pz\u0151 k\u00e9pess\u00e9get a habk\u00e9pz\u00e9si indexszel (100 r\u00e9sz poli\u00e9terre felhaszn\u00e1lt v\u00edz vagy v\u00edzegyen\u00e9rt\u00e9k sz\u00e1ma) lehet kifejezni: m-habk\u00e9pz\u0151szer mennyis\u00e9ge Habk\u00e9pz\u00e9si index IF=m(v\u00edz)+m(F-11)\/10+m(MC.)\/9(100 r\u00e9sz poli\u00e9ter) A v\u00edz mint habk\u00e9pz\u0151szer reakci\u00f3ba l\u00e9p az izocian\u00e1ttal, karbamidk\u00f6t\u00e9st hoz l\u00e9tre \u00e9s nagy mennyis\u00e9g\u0171 CO2-t \u00e9s h\u0151t szabad\u00edt fel, ami egy l\u00e1ncreakci\u00f3t jelent. A v\u00edz mennyis\u00e9ge nagyobb, a hab s\u0171r\u0171s\u00e9ge cs\u00f6kken, a kem\u00e9nys\u00e9g n\u0151, ugyanakkor a bubor\u00e9klyukak oszlopai kisebbek \u00e9s gyeng\u00e9bbek lesznek, ami cs\u00f6kkenti a teherb\u00edr\u00f3 k\u00e9pess\u00e9get, \u00e9s k\u00f6nnyen \u00f6sszeomlik a bubor\u00e9k \u00e9s a bubor\u00e9k megreped\u00e9se. A felhaszn\u00e1lt TDI mennyis\u00e9ge n\u0151, t\u00f6bb h\u0151 szabadul fel, \u00e9s k\u00f6nnyen meg\u00e9geti a sz\u00edvet. Ha a v\u00edz mennyis\u00e9ge meghaladja az 5,0 r\u00e9szt, fizikai habos\u00edt\u00f3szert kell hozz\u00e1adni a h\u0151 egy r\u00e9sz\u00e9nek elnyel\u00e9s\u00e9re, hogy elker\u00fclhet\u0151 legyen a mag\u00e9g\u00e9s el\u0151fordul\u00e1sa. Kevesebb v\u00edz eset\u00e9n a kataliz\u00e1tor mennyis\u00e9ge ennek megfelel\u0151en cs\u00f6kken, de a s\u0171r\u0171s\u00e9g n\u0151 ''F''.<\/p>\n

    2\u3001Toluol-diizocian\u00e1t<\/p>\n

    \u00c1ltal\u00e1nos l\u00e1gy hab TDI80\/20, 2, 4 \u00e9s 2, 6 izomer kever\u00e9kkel. El\u00e9rhet\u0151 h\u0171t\u00e9si m\u00f3dszer T100 el\u0151\u00e1ll\u00edt\u00e1s\u00e1ra, amely tiszta 2,4 TDI. TDI adag = (8,68 + m v\u00edz \u00d7 9,67) \u00d7 TDI index. A TDI-index \u00e1ltal\u00e1ban 110-120. Izocian\u00e1t index n\u00f6vekszik egy bizonyos tartom\u00e1nyban, majd a hab kem\u00e9nys\u00e9ge n\u00f6vekszik, de el\u00e9r egy bizonyos pontot, miut\u00e1n a kem\u00e9nys\u00e9g m\u00e1r nem jelent\u0151s n\u00f6veked\u00e9s a szak\u00edt\u00f3szil\u00e1rds\u00e1g, szak\u00edt\u00f3szil\u00e1rds\u00e1g \u00e9s ny\u00fal\u00e1s cs\u00f6kken, a hab kialakul\u00e1sa nagy lyukak, a z\u00e1rt cell\u00e1s emelkedik, a A rugalmass\u00e1g cs\u00f6kken, a fel\u00fclet hossz\u00fa ideig ragacsos, az \u00e9r\u00e9si id\u0151 hossz\u00fa, ami mag\u00e9g\u00e9st okoz. Az alacsony izocian\u00e1t-index a hab reped\u00e9seit, gyenge rugalmass\u00e1got, gyenge szil\u00e1rds\u00e1got okoz, a t\u00f6m\u00f6r\u00edt\u00e9s tart\u00f3s deform\u00e1ci\u00f3ja nagyobb, \u00e9s a fel\u00fclet nedves \u00e9rzet\u0171.<\/p>\n

    3\u3001Kataliz\u00e1tor<\/p>\n

    Amin: \u00e1ltal\u00e1ban az A33-at haszn\u00e1lja, szerepe az izocian\u00e1t \u00e9s a v\u00edz reakci\u00f3j\u00e1nak el\u0151seg\u00edt\u00e9se, a habs\u0171r\u0171s\u00e9g, a bubor\u00e9knyit\u00e1si sebess\u00e9g stb. be\u00e1ll\u00edt\u00e1sa, els\u0151sorban a habk\u00e9pz\u0151d\u00e9si reakci\u00f3 el\u0151seg\u00edt\u00e9se. Amin t\u00f6bb: a hab term\u00e9kek megjelennek osztott, a hab lyukak vagy bubor\u00e9k szemek Amin kevesebb: a hab zsugorod\u00e1s, z\u00e1rt cell\u00e1s, \u00e1ltal kiadott alj\u00e1n a hab term\u00e9kek vastag. \u00d3n: \u00e1ltal\u00e1ban a T-9 \u00f3n-okto\u00e1tot haszn\u00e1lj\u00e1k; a T-19 egy g\u00e9lreakci\u00f3-kataliz\u00e1tor, nagy katalitikus aktivit\u00e1ssal, els\u0151sorban a g\u00e9lreakci\u00f3, azaz a k\u00e9s\u0151i reakci\u00f3 el\u0151seg\u00edt\u00e9s\u00e9re. \u00d3n t\u00f6bb: gyors zsel\u00e9sed\u00e9s, viszkozit\u00e1s n\u00f6vekszik, gyenge rugalmass\u00e1g, rossz \u00e1tereszt\u0151k\u00e9pess\u00e9g, ami z\u00e1rt lyuk jelens\u00e9get eredm\u00e9nyez. Ha megfelel\u0151en n\u00f6veli az adagol\u00e1s\u00e1t kaphat laza j\u00f3 nyitott cell\u00e1s hab, tov\u00e1bb n\u00f6veli az adagol\u00e1st, hogy a hab fokozatosan szoross\u00e1 v\u00e1ljon, \u00edgy zsugorod\u00e1s, z\u00e1rt cell\u00e1s. \u00d3n kevesebb: el\u00e9gtelen g\u00e9l, a habos\u00edt\u00e1si folyamat hasad\u00e1st okoz. Van reped\u00e9s a sz\u00e9l\u00e9n vagy a tetej\u00e9n, \u00e9s a dehiszcencia, a burr jelens\u00e9g. Az amin cs\u00f6kkent\u00e9se vagy az \u00f3n n\u00f6vel\u00e9se n\u00f6velheti a polimer bubor\u00e9kfilm fal\u00e1nak szil\u00e1rds\u00e1g\u00e1t, amikor nagy mennyis\u00e9gben g\u00e1zosod\u00e1s t\u00f6rt\u00e9nik, \u00edgy cs\u00f6kkentve az \u00fcregesed\u00e9st vagy a reped\u00e9st. Az, hogy egy poliuret\u00e1nhabnak k\u00edv\u00e1natos nyitott vagy z\u00e1rt cell\u00e1s szerkezete van-e, els\u0151sorban a g\u00e9lreakci\u00f3 \u00e9s a g\u00e1z] t\u00e1gul\u00e1si sebess\u00e9ge k\u00f6z\u00f6tti egyens\u00falyt\u00f3l f\u00fcgg a habk\u00e9pz\u0151d\u00e9s sor\u00e1n. Ezt az egyens\u00falyt a tercier aminkataliz\u00e1tor, a habstabiliz\u00e1l\u00f3 \u00e9s egy\u00e9b adal\u00e9kanyagok t\u00edpus\u00e1nak \u00e9s mennyis\u00e9g\u00e9nek be\u00e1ll\u00edt\u00e1s\u00e1val lehet el\u00e9rni a k\u00e9sz\u00edtm\u00e9nyben.<\/p>\n

    4\u3001Habstabiliz\u00e1tor (szilikonolaj)<\/p>\n

    A habstabiliz\u00e1tor egyfajta fel\u00fcletakt\u00edv anyag, amely a polikarbamidot j\u00f3l diszperg\u00e1lja a habk\u00e9pz\u0151 rendszerben, a \"fizikai t\u00e9rh\u00e1l\u00f3sod\u00e1si pont\" szerep\u00e9t t\u00f6lti be, \u00e9s nyilv\u00e1nval\u00f3an jav\u00edthatja a habkever\u00e9k korai viszkozit\u00e1s\u00e1t, hogy elker\u00fclje a hab reped\u00e9s\u00e9t. Egyr\u00e9szt van emulge\u00e1l\u00f3 hat\u00e1sa, hogy a habanyag \u00f6sszetev\u0151i a k\u00f6lcs\u00f6n\u00f6s oldhat\u00f3s\u00e1g k\u00f6z\u00f6tt a javul\u00e1s, m\u00e1sr\u00e9szt, miut\u00e1n hozz\u00e1ad\u00e1sa szilikon fel\u00fcletakt\u00edv anyag cs\u00f6kkentheti a fel\u00fcleti fesz\u00fclts\u00e9g a folyad\u00e9k r, g\u00e1z diszperzi\u00f3 kell n\u00f6velni a szabad energia, hogy cs\u00f6kkentse a leveg\u0151 diszperg\u00e1lt a nyersanyagok a kever\u00e9si \u00e9s kever\u00e9si folyamat nagyobb val\u00f3sz\u00edn\u0171s\u00e9ggel v\u00e1lik nukle\u00e1lt, hogy seg\u00edtse a gener\u00e1ci\u00f3s kis bubor\u00e9kok, \u00e1ll\u00edtsa be a m\u00e9ret\u00e9t a hab p\u00f3rusok, szab\u00e1lyozza a szerkezet a p\u00f3rusok, hogy jav\u00edtsa a stabilit\u00e1st a habz\u00e1s; megakad\u00e1lyozza a bubor\u00e9klyukak leereszt\u00e9s\u00e9t, megreped\u00e9s\u00e9t \u00e9s a reped\u00e9sek elker\u00fcl\u00e9s\u00e9t. Be\u00e1ll\u00edthatja a habp\u00f3rusok m\u00e9ret\u00e9t, szab\u00e1lyozhatja a habp\u00f3rusok szerkezet\u00e9t, \u00e9s jav\u00edthatja a habz\u00e1s stabilit\u00e1s\u00e1t; megakad\u00e1lyozhatja a habp\u00f3rusok leereszt\u00e9s\u00e9t \u00e9s felszakad\u00e1s\u00e1t, rugalmasabb\u00e1 teheti a habfalat, \u00e9s szab\u00e1lyozhatja a p\u00f3rusm\u00e9retet \u00e9s a hab egyenletess\u00e9g\u00e9t. Stabiliz\u00e1lja a habot a habz\u00e1s korai szakasz\u00e1ban, megakad\u00e1lyozza a hab bubor\u00e9kosod\u00e1s\u00e1t a habz\u00e1s k\u00f6zep\u00e9n, \u00e9s a habz\u00e1s k\u00e9s\u0151i szakasz\u00e1ban \u00f6sszekapcsolja a hab lyukait. \u00c1ltal\u00e1noss\u00e1gban elmondhat\u00f3, hogy min\u00e9l t\u00f6bb a habk\u00e9pz\u0151 szer \u00e9s a POP adagja, ann\u00e1l t\u00f6bb a szilikonolaj adagja. Nagyobb adagol\u00e1s: a k\u00e9s\u0151i habfal rugalmass\u00e1g\u00e1nak n\u00f6vel\u00e9se, nem szakadhat meg, a bubor\u00e9klyuk finom. Okozza a z\u00e1rt cell\u00e1t. Alacsony adagol\u00e1s: habszakad\u00e1s, a bubor\u00e9k \u00f6sszeoml\u00e1sa ut\u00e1n a bubor\u00e9k emelked\u00e9se, a p\u00f3rusm\u00e9ret nagyobb, k\u00f6nny\u0171 \u00e9s bubor\u00e9k.<\/p>\n

    5\u3001H\u0151m\u00e9rs\u00e9klet hat\u00e1sa<\/p>\n

    A poliuret\u00e1n habk\u00e9pz\u0151d\u00e9si reakci\u00f3ja felgyorsul az anyagh\u0151m\u00e9rs\u00e9klet emelked\u00e9s\u00e9vel, ami a mag \u00e9g\u00e9s\u00e9nek \u00e9s a t\u0171z vesz\u00e9ly\u00e9t okozza az \u00e9rz\u00e9keny k\u00e9pletben. A h\u0151m\u00e9rs\u00e9klet poliol- \u00e9s izocian\u00e1tkomponensek \u00e1ltal\u00e1nos ellen\u0151rz\u00e9se v\u00e1ltozatlan marad. Amikor a habk\u00e9pz\u0151 hab s\u0171r\u0171s\u00e9ge cs\u00f6kken az anyagh\u0151m\u00e9rs\u00e9klet ennek megfelel\u0151en n\u00f6vekszik. Ugyanaz a k\u00e9plet, az anyag h\u0151m\u00e9rs\u00e9klete ugyanaz a ny\u00e1ri h\u0151m\u00e9rs\u00e9klet, a reakci\u00f3 sebess\u00e9ge felgyorsult, ami a hab s\u0171r\u0171s\u00e9g\u00e9nek cs\u00f6kken\u00e9s\u00e9t, a kem\u00e9nys\u00e9g, a ny\u00fal\u00e1s n\u00f6veked\u00e9s\u00e9t, a mechanikai szil\u00e1rds\u00e1g n\u00f6veked\u00e9s\u00e9t eredm\u00e9nyezi. Ny\u00e1ron a TDI-index megfelel\u0151en n\u00f6velhet\u0151 a kem\u00e9nys\u00e9g cs\u00f6kken\u00e9s\u00e9nek korrig\u00e1l\u00e1s\u00e1ra.<\/p>\n

    6\u3001A leveg\u0151 p\u00e1ratartalm\u00e1nak hat\u00e1sa<\/p>\n

    A p\u00e1ratartalom emelkedik, mivel a hab izocian\u00e1t alap\u00fa r\u00e9sze reag\u00e1l a leveg\u0151ben l\u00e9v\u0151 nedvess\u00e9ggel, ami a kem\u00e9nys\u00e9g cs\u00f6kken\u00e9s\u00e9t eredm\u00e9nyezi, \u00edgy a TDI adagol\u00e1sa megfelel\u0151en n\u00f6velhet\u0151 a habos\u00edt\u00e1s sor\u00e1n. Ha t\u00fal nagy, akkor az \u00e9rlel\u00e9si h\u0151m\u00e9rs\u00e9klet t\u00fal magas lesz, ami gyomor\u00e9g\u00e9st okoz.<\/p>\n

    7, a l\u00e9gk\u00f6ri nyom\u00e1s hat\u00e1sa<\/p>\n

    Ugyanaz a k\u00e9plet, habz\u00e1s nagy magass\u00e1gban, a habterm\u00e9kek s\u0171r\u0171s\u00e9ge kicsi. Megjegyz\u00e9s:<\/p>\n

    (1) A habk\u00e9pz\u0151d\u00e9s folyamat\u00e1ban a g\u00e9lreakci\u00f3 \u00e9s a habk\u00e9pz\u0151d\u00e9si reakci\u00f3 egyidej\u0171leg zajlik, de a reakci\u00f3k k\u00f6z\u00f6tt verseny van, \u00e9s \u00e1ltal\u00e1ban a habk\u00e9pz\u0151d\u00e9si reakci\u00f3 sebess\u00e9ge nagyobb, mint a g\u00e9lreakci\u00f3 sebess\u00e9ge. G\u00e9lreakci\u00f3 - a karbam\u00e1t k\u00e9pz\u0151d\u00e9si reakci\u00f3ja, (reakci\u00f3 -OH-val) Habk\u00e9pz\u0151d\u00e9si reakci\u00f3 - a v\u00edz r\u00e9szv\u00e9tel\u00e9vel lej\u00e1tsz\u00f3d\u00f3, karbamidot l\u00e9trehoz\u00f3 \u00e9s bubor\u00e9kokat termel\u0151 reakci\u00f3ra utal.<\/p>\n

    2) Nukle\u00e1l\u00f3szer - olyan anyag, amely bubor\u00e9kk\u00e9pz\u0151d\u00e9st okoz, p\u00e9ld\u00e1ul mikroszkopikus szil\u00e1rd r\u00e9szecsk\u00e9k \u00e9s folyad\u00e9kok a rendszerben. Habstabiliz\u00e1tor vagy eredetileg a finom bubor\u00e9kok anyag\u00e1ban oldott anyag stb.; bele\u00e9rtve a poliolokban \u00e9s izocian\u00e1tokban oldott leveg\u0151t vagy nitrog\u00e9nt, sz\u00e9n-dioxidot, habstabiliz\u00e1tort, kormot \u00e9s egy\u00e9b t\u00f6lt\u0151anyagokat. De a g\u00e1z az anyagban, hogy t\u00f6bb bubor\u00e9kot termeljen; stabiliz\u00e1l\u00e1s \u00e9s a t\u00f6bb gener\u00e1lt bubor\u00e9k lyukak finomabbak lesznek. A habos\u00edt\u00f3 rendszerben k\u00e9pz\u0151d\u0151 bubor\u00e9kok sz\u00e1ma \u00e9s a habban l\u00e9v\u0151 bubor\u00e9klyukak m\u00e9rete a nukle\u00e1l\u00f3szerek hozz\u00e1ad\u00e1s\u00e1nak szerep\u00e9t\u0151l f\u00fcgg; t\u00f6bb nukle\u00e1l\u00f3szer, t\u00f6bb bubor\u00e9k, kisebb bubor\u00e9klyukak. A h\u0151m\u00e9rs\u00e9klet emelked\u00e9s\u00e9vel cs\u00f6kken a g\u00e1z oldhat\u00f3s\u00e1ga a folyad\u00e9kban, \u00edgy t\u00f6bb bubor\u00e9k k\u00e9pz\u0151dik, vagy az el\u0151z\u0151 kezdet n\u0151. A hosszabb emulzi\u00f3s id\u0151 a nagy bubor\u00e9kok n\u00f6veked\u00e9s\u00e9nek kedvez. A kataliz\u00e1tor mennyis\u00e9g\u00e9nek n\u00f6vel\u00e9s\u00e9vel az emulzi\u00f3s id\u0151 ler\u00f6vid\u00edthet\u0151, \u00e9s a g\u00e9lreakci\u00f3 \u00e9s a bubor\u00e9kk\u00e9pz\u0151d\u00e9s egym\u00e1ssal verseng\u0151 reakci\u00f3i miatt finomsejt\u0171 habot kaphatunk.<\/p>\n

    3) Az, hogy a habnak k\u00edv\u00e1natos nyitott vagy z\u00e1rt cell\u00e1s szerkezete van-e, els\u0151sorban att\u00f3l f\u00fcgg, hogy a habk\u00e9pz\u0151d\u00e9s sor\u00e1n a zsel\u00e9sed\u00e9si sebess\u00e9g \u00e9s a g\u00e1z t\u00e1gul\u00e1si sebess\u00e9ge egyens\u00falyban van-e. Ez az egyens\u00faly a tercier amin kataliz\u00e1torok \u00e9s adal\u00e9kanyagok, p\u00e9ld\u00e1ul habstabiliz\u00e1torok t\u00edpus\u00e1nak \u00e9s adagol\u00e1s\u00e1nak be\u00e1ll\u00edt\u00e1s\u00e1val \u00e9rhet\u0151 el a k\u00e9sz\u00edtm\u00e9nyben.<\/p>","protected":false},"excerpt":{"rendered":"

    N-metilformamidGyors r\u00e9szletek<\/strong><\/h2>\n

    K\u00e9miai n\u00e9v: N-metilformamid<\/p>\n

    CAS: 123-39-7<\/p>\n

    Molekul\u00e1ris k\u00e9plet:C2H5NO<\/p>\n

    Molekulat\u00f6meg:59,07<\/p>\n

    K\u00e9miai szerkezet:\"N-metil-formamid<\/p>\n

    Megjelen\u00e9s: Folyad\u00e9k<\/p>\n

    Tisztas\u00e1g: 99.0%<\/p>","protected":false},"featured_media":6516,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[69],"product_tag":[],"class_list":{"0":"post-4202","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-catalysts-chemical-auxiliary-agents","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"yoast_head":"\nChina n-Methylformamide Manufacturer CAS 123-39-7 -Longchang Chemical<\/title>\n<meta name=\"description\" content=\"n-methylformamide cas 123-39-7 is key product of Longchang Chemical. We provide best price. 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