{"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\/tr\/product\/n-methylformamide-cas-123-39-7\/","title":{"rendered":"n-metilformamid cas 123-39-7"},"content":{"rendered":"

N-MetilformamidTipik \u00d6zellikler<\/strong><\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
\u00d6\u011fe<\/td>\nTeknik \u00d6zellikler<\/td>\nSonu\u00e7lar<\/td>\n<\/tr>\n
G\u00f6r\u00fcn\u00fc\u015f<\/td>\nRenksiz \u015eeffaf S\u0131v\u0131<\/td>\nRenksiz \u015eeffaf S\u0131v\u0131<\/td>\n<\/tr>\n
Tahlil<\/td>\n\u226599,5%<\/td>\n99.69%<\/td>\n<\/tr>\n
Su i\u00e7eri\u011fi<\/td>\n\u22640,050%<\/td>\n0.019%<\/td>\n<\/tr>\n
Renk (Pt-Co)<\/td>\n\u22645<\/td>\n5<\/td>\n<\/tr>\n
Metanol %<\/td>\n\u22640.10<\/td>\n0.050<\/td>\n<\/tr>\n
Amonyak %<\/td>\n\u22640.010<\/td>\n0.002<\/td>\n<\/tr>\n
Formik asit %<\/td>\n\u22640.010<\/td>\nHi\u00e7biri<\/td>\n<\/tr>\n
Ammonin format\u0131 %<\/td>\n\u22640.080<\/td>\n0.030<\/td>\n<\/tr>\n
Sonu\u00e7<\/td>\nSonu\u00e7lar kurumsal standartlarla uyumludur<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

N-Metilformamid Kullan\u0131m\u0131<\/strong><\/h2>\n

Bu \u00fcr\u00fcn \u00f6nemli bir organik kimyasal hammadde ve ara maddedir ve iyi bir organik \u00e7\u00f6z\u00fcc\u00fcd\u00fcr. Y\u00fcksek verimli ve d\u00fc\u015f\u00fck toksik tek y\u00f6ntem, \u00e7ift s\u00fct ve benzerlerini sentezlemek i\u00e7in kullan\u0131l\u0131r. Organik sentez i\u00e7in bir reaksiyon \u00e7\u00f6z\u00fcc\u00fcs\u00fc ve safla\u015ft\u0131r\u0131lm\u0131\u015f bir \u00e7\u00f6z\u00fcc\u00fc olarak kullan\u0131l\u0131r. Ayr\u0131ca t\u0131p, boyalar, baharatlar ve elektroliz, elektrokaplama end\u00fcstrisinde yayg\u0131n olarak kullan\u0131lmaktad\u0131r.<\/p>\n

    \n
  1. \n

    Kimyasal Sentez:<\/strong> N-Metilformamid genellikle farmas\u00f6tiklerin, zirai kimyasallar\u0131n ve \u00e7e\u015fitli organik bile\u015fiklerin sentezinde bir \u00e7\u00f6z\u00fcc\u00fc olarak kullan\u0131l\u0131r. Amidlerin ve di\u011fer azot i\u00e7eren bile\u015fiklerin olu\u015fumunu i\u00e7eren reaksiyonlarda \u00f6zellikle yararl\u0131d\u0131r.<\/p>\n<\/li>\n

  2. \n

    Polimer End\u00fcstrisi:<\/strong> Poli\u00fcretanlar ve poliakrilonitril gibi polimerlerin \u00fcretiminde kullan\u0131l\u0131r. Baz\u0131 elyaf ve re\u00e7inelerin \u00fcretiminde, N-Metilformamid bir \u00e7\u00f6z\u00fcc\u00fc ve bir reaksiyon ortam\u0131 olarak hizmet eder.<\/p>\n<\/li>\n

  3. \n

    \u0130la\u00e7lar:<\/strong> Kimyasal, ila\u00e7 end\u00fcstrisinde aktif farmas\u00f6tik bile\u015fenlerin (API'ler) ve di\u011fer ara \u00fcr\u00fcnlerin sentezi i\u00e7in kullan\u0131l\u0131r. Amid gruplar\u0131n\u0131n molek\u00fcllere eklenmesini i\u00e7eren reaksiyonlar\u0131 kolayla\u015ft\u0131r\u0131r.<\/p>\n<\/li>\n

  4. \n

    Tekstil \u0130\u015fleme:<\/strong> N-Metilformamid, tekstil end\u00fcstrisinde, \u00f6zellikle akrilik ve modakrilik gibi sentetik elyaflar\u0131n \u00fcretiminde elyaf e\u011firme i\u00e7in bir \u00e7\u00f6z\u00fcc\u00fc olarak kullan\u0131l\u0131r.<\/p>\n<\/li>\n<\/ol>\n

    N-Metilformamid Ambalaj<\/strong><\/h2>\n

    1kg\/kep\u00e7e, 200kg\/tambur<\/p>\n

    \u015eimdi Bize Ula\u015f\u0131n!<\/b><\/strong><\/h2>\n

    COA, MSDS veya TDS'ye ihtiyac\u0131n\u0131z varsa, l\u00fctfen a\u015fa\u011f\u0131daki forma ileti\u015fim bilgilerinizi girin, genellikle 24 saat i\u00e7inde sizinle ileti\u015fime ge\u00e7ece\u011fiz. Bana e-posta da g\u00f6nderebilirsiniz info@longchangchemical.com<\/a><\/span> \u00c7al\u0131\u015fma saatleri i\u00e7inde (8:30 - 6:00 UTC+8 Pzt.~Sat.) veya h\u0131zl\u0131 yan\u0131t almak i\u00e7in web sitesi canl\u0131 sohbetini kullan\u0131n.<\/b><\/strong><\/h4>\n

     <\/p>\n

    <\/p>\n

    Kataliz\u00f6r\u00fcn k\u00f6p\u00fcrme \u00fczerindeki etkisi nedir?<\/p>\n

    Ana hammadde olan polieter, k\u00f6p\u00fck \u00fcr\u00fcnlerinin iskelet reaksiyonu olan \u00fcretan\u0131 olu\u015fturmak i\u00e7in izosiyanat ile reaksiyona girer. Ayn\u0131 i\u015flevsellik durumunda, molek\u00fcler a\u011f\u0131rl\u0131k artar, k\u00f6p\u00fc\u011f\u00fcn gerilme mukavemeti, uzamas\u0131 ve esnekli\u011fi artar ve ayn\u0131 t\u00fcr polieterin reaksiyon aktivitesi azal\u0131r; ayn\u0131 e\u015fde\u011fer de\u011fer (molek\u00fcler a\u011f\u0131rl\u0131k \/ i\u015flevsellik) durumunda, i\u015flevsellik artar, reaksiyon nispeten h\u0131zlan\u0131r ve \u00fcretilen \u00fcretan\u0131n \u00e7apraz ba\u011flanma derecesi iyile\u015fir ve k\u00f6p\u00fc\u011f\u00fcn sertli\u011fi artar ve uzama oran\u0131 azal\u0131r. Poliol\u00fcn ortalama off-enerjisi 2,5'in \u00fczerinde olmal\u0131d\u0131r, ortalama off-enerji \u00e7ok d\u00fc\u015f\u00fckse, k\u00f6p\u00fck g\u00f6vdesi bas\u0131n\u00e7tan sonra zay\u0131f toparlanmaya sahiptir.<\/p>\n

    Polieter dozaj\u0131 y\u00fcksekse, k\u00f6p\u00fck \u00fcr\u00fcnlerinin \u00e7atlamas\u0131na veya \u00e7\u00f6kmesine neden olmas\u0131 kolay olan di\u011fer hammaddelerin (TDI, su, kataliz\u00f6r vb.) azalt\u0131lmas\u0131na e\u015fde\u011ferdir. Polieter dozaj\u0131 k\u00fc\u00e7\u00fckse, k\u00f6p\u00fck \u00fcr\u00fcnleri serttir, elastikiyet azal\u0131r ve el hissi k\u00f6t\u00fcd\u00fcr. 1\u3001K\u00f6p\u00fcrt\u00fcc\u00fc madde<\/p>\n

    Genel olarak 21'den daha y\u00fcksek yo\u011funluklu poli\u00fcretan blok k\u00f6p\u00fck \u00fcretiminde, yard\u0131mc\u0131 \u015fi\u015firme maddesi olarak metilen klor\u00fcr (MC) ve di\u011fer d\u00fc\u015f\u00fck kaynama noktal\u0131 bile\u015fikler (fiziksel \u015fi\u015firme maddesi) kullan\u0131lmadan \u00f6nce d\u00fc\u015f\u00fck yo\u011funluklu form\u00fclasyonlarda veya ultra yumu\u015fak form\u00fclasyonlarda \u015fi\u015firme maddesi olarak sadece su (kimyasal \u015fi\u015firme maddesi) kullan\u0131l\u0131r. Yard\u0131mc\u0131 \u015fi\u015firme maddesi k\u00f6p\u00fc\u011f\u00fcn yo\u011funlu\u011funu ve sertli\u011fini azaltacak ve reaksiyon \u0131s\u0131s\u0131n\u0131n bir k\u0131sm\u0131n\u0131n gazla\u015ft\u0131r\u0131lmas\u0131yla emilmesi nedeniyle k\u00fcrlenme yava\u015flayacakt\u0131r, bu da kataliz\u00f6r dozaj\u0131nda bir art\u0131\u015f gerektirir. Is\u0131n\u0131n emilmesi nedeniyle \u00e7ekirdek yanmas\u0131 tehlikesi \u00f6nlenir. K\u00f6p\u00fcrme kabiliyeti k\u00f6p\u00fcrme indeksi (100 par\u00e7a polieter i\u00e7in kullan\u0131lan su veya su e\u015fde\u011feri say\u0131s\u0131) ile yans\u0131t\u0131labilir: m-k\u00f6p\u00fcrme maddesi miktar\u0131 K\u00f6p\u00fcrme indeksi IF=m(su)+m(F-11)\/10+m(MC.)\/9(100 par\u00e7a polieter) K\u00f6p\u00fcrme maddesi olarak su, \u00fcre ba\u011f\u0131 olu\u015fturmak i\u00e7in izosiyanat ile reaksiyona girer ve zincirleme bir b\u00fcy\u00fcme reaksiyonu olan b\u00fcy\u00fck miktarda CO2 ve \u0131s\u0131 a\u00e7\u0131\u011fa \u00e7\u0131kar\u0131r. Su miktar\u0131 artt\u0131k\u00e7a k\u00f6p\u00fc\u011f\u00fcn yo\u011funlu\u011fu azal\u0131r, sertli\u011fi artar, ayn\u0131 zamanda kabarc\u0131k deliklerinin s\u00fctunlar\u0131 k\u00fc\u00e7\u00fcl\u00fcr ve zay\u0131flar, bu da ta\u015f\u0131ma kapasitesini azalt\u0131r ve kabarc\u0131\u011f\u0131 \u00e7\u00f6kertmek ve kabarc\u0131\u011f\u0131 \u00e7atlatmak kolayd\u0131r. T\u00fcketilen TDI miktar\u0131 artar, daha fazla \u0131s\u0131 a\u00e7\u0131\u011fa \u00e7\u0131kar ve kalbi yakmak kolayd\u0131r. Su miktar\u0131 5.0 par\u00e7ay\u0131 a\u015farsa, \u00e7ekirdek yanmas\u0131n\u0131n olu\u015fmas\u0131n\u0131 \u00f6nlemek i\u00e7in \u0131s\u0131n\u0131n bir k\u0131sm\u0131n\u0131 emmek i\u00e7in fiziksel bir k\u00f6p\u00fcrt\u00fcc\u00fc madde eklenmelidir. Daha az su, kataliz\u00f6r miktar\u0131 buna g\u00f6re azalt\u0131l\u0131r, ancak yo\u011funluk artar ''F''<\/p>\n

    2\u3001Toluen diizosiyanat<\/p>\n

    TDI80\/20, 2,4 ve 2,6 izomerleri kar\u0131\u015f\u0131m\u0131 ile genel yumu\u015fak k\u00f6p\u00fck. Saf 2,4 TDI olan T100'\u00fc haz\u0131rlamak i\u00e7in mevcut so\u011futma y\u00f6ntemi. TDI dozaj\u0131 = (8.68 + m su \u00d7 9.67) \u00d7 TDI indeksi. TDI indeksi genellikle 110-120'dir. \u0130zosiyanat indeksi belirli bir aral\u0131kta artar, daha sonra k\u00f6p\u00fck sertli\u011fi artar, ancak sertlik art\u0131k y\u0131rt\u0131lma mukavemetinde \u00f6nemli bir art\u0131\u015f olmad\u0131ktan sonra belirli bir noktaya ula\u015f\u0131r, \u00e7ekme mukavemeti ve uzama azal\u0131r, k\u00f6p\u00fckte b\u00fcy\u00fck delikler olu\u015fur, kapal\u0131 h\u00fccre y\u00fckselir, Esneklik azal\u0131r, y\u00fczey uzun s\u00fcre yap\u0131\u015fkand\u0131r, olgunla\u015fma s\u00fcresi uzundur, \u00e7ekirdek yanmas\u0131na neden olur. D\u00fc\u015f\u00fck izosiyanat indeksi k\u00f6p\u00fck \u00e7atlaklar\u0131na, zay\u0131f esnekli\u011fe, zay\u0131f mukavemete neden olur, s\u0131k\u0131\u015ft\u0131rma kal\u0131c\u0131 deformasyonu daha b\u00fcy\u00fckt\u00fcr ve y\u00fczey nemli bir hisse sahiptir.<\/p>\n

    3\u3001Kataliz\u00f6r<\/p>\n

    Amin: genellikle A33 kullan\u0131r, rol\u00fc izosiyanat ve su reaksiyonunu te\u015fvik etmek, k\u00f6p\u00fck yo\u011funlu\u011funu, kabarc\u0131k a\u00e7\u0131lma oran\u0131n\u0131 vb. ayarlamak, esas olarak k\u00f6p\u00fcrme reaksiyonunu te\u015fvik etmektir. Amin daha fazla: k\u00f6p\u00fck \u00fcr\u00fcnleri b\u00f6l\u00fcnm\u00fc\u015f g\u00f6r\u00fcn\u00fcr, k\u00f6p\u00fc\u011f\u00fcn delikleri veya kabarc\u0131k g\u00f6zleri vard\u0131r Amin daha az: k\u00f6p\u00fck b\u00fcz\u00fclmesi, kapal\u0131 h\u00fccre, k\u00f6p\u00fck \u00fcr\u00fcnlerinin alt k\u0131sm\u0131 taraf\u0131ndan kal\u0131n olarak verilir. Kalay: genellikle stannous octoate T-9 kullan\u0131n; T-19, esas olarak jel reaksiyonunu, yani ge\u00e7 reaksiyonu te\u015fvik etmek i\u00e7in y\u00fcksek katalitik aktiviteye sahip bir jel reaksiyon kataliz\u00f6r\u00fcd\u00fcr. Kalay daha fazla: h\u0131zl\u0131 jelle\u015fme, viskozite artar, zay\u0131f esneklik, zay\u0131f ge\u00e7irgenlik, kapal\u0131 delik fenomenine neden olur. Dozaj\u0131n\u0131 uygun \u015fekilde artt\u0131r\u0131rsan\u0131z, gev\u015fek iyi a\u00e7\u0131k h\u00fccreli k\u00f6p\u00fck elde edebilir, k\u00f6p\u00fc\u011f\u00fcn yava\u015f yava\u015f s\u0131k\u0131 hale gelmesi i\u00e7in dozaj\u0131 daha da artt\u0131r\u0131n, b\u00f6ylece b\u00fcz\u00fclme, kapal\u0131 h\u00fccre. Kalay az: yetersiz jel, k\u00f6p\u00fcrme i\u015flemi yar\u0131lmaya neden olur. Kenarlarda veya \u00fcstte \u00e7atlama ve a\u00e7\u0131lma, \u00e7apak olgusu vard\u0131r. Aminin azalt\u0131lmas\u0131 veya kalay\u0131n art\u0131r\u0131lmas\u0131, b\u00fcy\u00fck miktarlarda gaz olu\u015ftu\u011funda polimer kabarc\u0131k film duvar mukavemetini art\u0131rabilir, b\u00f6ylece oyukla\u015fma veya \u00e7atlamay\u0131 azaltabilir. Bir poli\u00fcretan k\u00f6p\u00fc\u011f\u00fcn arzu edilen a\u00e7\u0131k veya kapal\u0131 h\u00fccre yap\u0131s\u0131na sahip olup olmad\u0131\u011f\u0131, \u00f6ncelikle k\u00f6p\u00fck olu\u015fumu s\u0131ras\u0131nda jel reaksiyon h\u0131z\u0131 ile gaz] genle\u015fme h\u0131z\u0131 aras\u0131ndaki dengeye ba\u011fl\u0131d\u0131r. Bu denge, form\u00fclasyondaki tersiyer amin kataliz\u00f6r\u00fcn\u00fcn ve k\u00f6p\u00fck stabilize edici ve di\u011fer katk\u0131 maddelerinin t\u00fcr\u00fc ve miktar\u0131 ayarlanarak sa\u011flanabilir.<\/p>\n

    4\u3001K\u00f6p\u00fck dengeleyici (silikon ya\u011f\u0131)<\/p>\n

    K\u00f6p\u00fck stabilizat\u00f6r\u00fc, poli\u00fcreyi k\u00f6p\u00fck sisteminde iyi da\u011f\u0131lm\u0131\u015f hale getirebilen, 'fiziksel \u00e7apraz ba\u011flanma noktas\u0131' rol\u00fcn\u00fc oynayabilen ve k\u00f6p\u00fc\u011f\u00fcn \u00e7atlamas\u0131n\u0131 \u00f6nlemek i\u00e7in k\u00f6p\u00fck kar\u0131\u015f\u0131m\u0131n\u0131n erken viskozitesini a\u00e7\u0131k\u00e7a art\u0131rabilen bir t\u00fcr y\u00fczey aktif maddedir. Bir yandan em\u00fclsifikasyon etkisine sahiptir, b\u00f6ylece geli\u015ftirme aras\u0131ndaki kar\u015f\u0131l\u0131kl\u0131 \u00e7\u00f6z\u00fcn\u00fcrl\u00fc\u011f\u00fcn k\u00f6p\u00fck malzemesi bile\u015fenleri, di\u011fer yandan silikon y\u00fczey aktif madde eklendikten sonra s\u0131v\u0131 r'nin y\u00fczey gerilimini azaltabilir, gaz dispersiyonunun serbest enerjiyi artt\u0131rmas\u0131 gerekir. kar\u0131\u015ft\u0131rma ve kar\u0131\u015ft\u0131rma i\u015fleminde hammaddelerde da\u011f\u0131lm\u0131\u015f havan\u0131n \u00e7ekirdeklenme olas\u0131l\u0131\u011f\u0131 daha y\u00fcksektir, k\u00fc\u00e7\u00fck kabarc\u0131klar\u0131n olu\u015fumuna yard\u0131mc\u0131 olmak, k\u00f6p\u00fck g\u00f6zeneklerinin boyutunu ayarlamak, k\u00f6p\u00fcrmenin stabilitesini art\u0131rmak i\u00e7in g\u00f6zeneklerin yap\u0131s\u0131n\u0131 kontrol etmek; Kabarc\u0131k deliklerinin s\u00f6nmesini, y\u0131rt\u0131lmas\u0131n\u0131 ve \u00e7atlamas\u0131n\u0131 \u00f6nler. K\u00f6p\u00fck g\u00f6zeneklerinin boyutunu ayarlayabilir, k\u00f6p\u00fck g\u00f6zeneklerinin yap\u0131s\u0131n\u0131 kontrol edebilir ve k\u00f6p\u00fcrmenin stabilitesini art\u0131rabilir; k\u00f6p\u00fck g\u00f6zeneklerinin s\u00f6nmesini ve y\u0131rt\u0131lmas\u0131n\u0131 \u00f6nleyebilir, k\u00f6p\u00fck duvar\u0131n\u0131 elastik hale getirebilir ve g\u00f6zenek boyutunu ve k\u00f6p\u00fc\u011f\u00fcn homojenli\u011fini kontrol edebilir. K\u00f6p\u00fcrmenin erken a\u015famas\u0131nda k\u00f6p\u00fc\u011f\u00fc stabilize eder, k\u00f6p\u00fcrmenin ortas\u0131nda k\u00f6p\u00fc\u011f\u00fcn kabarmas\u0131n\u0131 \u00f6nler ve k\u00f6p\u00fcrmenin ge\u00e7 a\u015famas\u0131nda k\u00f6p\u00fck deliklerinin ba\u011flanmas\u0131n\u0131 sa\u011flar. Genel olarak, daha fazla k\u00f6p\u00fcrt\u00fcc\u00fc madde ve POP dozaj\u0131, daha fazla silikon ya\u011f\u0131 dozaj\u0131. Daha fazla dozaj: ge\u00e7 k\u00f6p\u00fck duvar esnekli\u011fini art\u0131r\u0131r, y\u0131rt\u0131lmamal\u0131, kabarc\u0131k deli\u011fi iyi. Kapal\u0131 h\u00fccreye neden olur. D\u00fc\u015f\u00fck dozaj: k\u00f6p\u00fck y\u0131rt\u0131lmas\u0131, kabarc\u0131\u011f\u0131n \u00e7\u00f6k\u00fc\u015f\u00fcn\u00fcn y\u00fckselmesinden sonra, g\u00f6zenek boyutu daha b\u00fcy\u00fck, kolay ve kabarc\u0131k.<\/p>\n

    5\u3001S\u0131cakl\u0131k etkisi<\/p>\n

    Poli\u00fcretan\u0131n k\u00f6p\u00fcrme reaksiyonu malzeme s\u0131cakl\u0131\u011f\u0131n\u0131n y\u00fckselmesi ile h\u0131zlan\u0131r, bu da hassas form\u00fclde \u00e7ekirdek yanmas\u0131 ve yang\u0131n tehlikesine neden olur. S\u0131cakl\u0131\u011f\u0131n poliol ve izosiyanat bile\u015fenlerinin genel kontrol\u00fc de\u011fi\u015fmeden kal\u0131r. K\u00f6p\u00fck yo\u011funlu\u011fu azald\u0131\u011f\u0131nda malzeme s\u0131cakl\u0131\u011f\u0131 da buna ba\u011fl\u0131 olarak artar. Ayn\u0131 form\u00fcl, malzeme s\u0131cakl\u0131\u011f\u0131 ayn\u0131 yaz s\u0131cakl\u0131\u011f\u0131, reaksiyon h\u0131z\u0131 h\u0131zland\u0131, k\u00f6p\u00fck yo\u011funlu\u011funda bir azalma ile sonu\u00e7land\u0131, sertlik, uzama artt\u0131, mekanik mukavemet artt\u0131. Yaz aylar\u0131nda, sertlikteki d\u00fc\u015f\u00fc\u015f\u00fc d\u00fczeltmek i\u00e7in TDI indeksi uygun \u015fekilde art\u0131r\u0131labilir.<\/p>\n

    6\u3001Hava neminin etkisi<\/p>\n

    K\u00f6p\u00fc\u011f\u00fcn izosiyanat bazl\u0131 k\u0131sm\u0131n\u0131n havadaki nemle reaksiyona girmesi nedeniyle nem artar, bu da sertli\u011fin azalmas\u0131na neden olur, bu nedenle k\u00f6p\u00fcrme s\u0131ras\u0131nda TDI dozaj\u0131 uygun \u015fekilde art\u0131r\u0131labilir. \u00c7ok b\u00fcy\u00fck oldu\u011funda, olgunla\u015fma s\u0131cakl\u0131\u011f\u0131n\u0131n mide ek\u015fimesine neden olacak kadar y\u00fcksek olmas\u0131na neden olacakt\u0131r.<\/p>\n

    7, atmosferik bas\u0131nc\u0131n etkisi<\/p>\n

    Ayn\u0131 form\u00fcl, y\u00fcksek irtifada k\u00f6p\u00fcrme, k\u00f6p\u00fck \u00fcr\u00fcnlerinin yo\u011funlu\u011fu azd\u0131r. Not:<\/p>\n

    (1) K\u00f6p\u00fck olu\u015fumu s\u00fcrecinde jel reaksiyonu ve k\u00f6p\u00fcrme reaksiyonu ayn\u0131 anda ger\u00e7ekle\u015fir, ancak reaksiyonlar aras\u0131nda rekabet vard\u0131r ve genellikle k\u00f6p\u00fcrme reaksiyonunun h\u0131z\u0131 jel reaksiyonunun h\u0131z\u0131ndan daha fazlad\u0131r. Jel reaksiyonu - karbamat\u0131n olu\u015fum reaksiyonu, (-OH ile reaksiyon) K\u00f6p\u00fcrme reaksiyonu - suyun kat\u0131l\u0131m\u0131 ile \u00fcre \u00fcreten ve kabarc\u0131klar \u00fcreten reaksiyonu ifade eder<\/p>\n

    2) \u00c7ekirdekle\u015ftirici madde - sistemdeki mikroskobik kat\u0131 par\u00e7ac\u0131klar ve s\u0131v\u0131lar gibi kabarc\u0131klar\u0131n olu\u015fumuna neden olan bir madde. K\u00f6p\u00fck stabilizat\u00f6r\u00fc veya ba\u015flang\u0131\u00e7ta ince kabarc\u0131klar\u0131n malzemesinde \u00e7\u00f6z\u00fcnm\u00fc\u015f, vb.; polioller ve izosiyanatlar, karbon dioksit, k\u00f6p\u00fck stabilizat\u00f6r\u00fc, karbon siyah\u0131 ve di\u011fer dolgu maddelerinde \u00e7\u00f6z\u00fcnm\u00fc\u015f hava veya azot dahil. Ancak daha fazla kabarc\u0131k \u00fcretmek i\u00e7in malzemedeki gaz; stabilizasyon ve daha fazla \u00fcretilen kabarc\u0131k delikleri daha ince olacakt\u0131r. K\u00f6p\u00fck sisteminde olu\u015fan kabarc\u0131klar\u0131n say\u0131s\u0131 ve k\u00f6p\u00fckteki kabarc\u0131k deliklerinin boyutu, \u00e7ekirdekle\u015ftirici ajanlar\u0131n eklenmesinin rol\u00fcne ba\u011fl\u0131d\u0131r; daha fazla \u00e7ekirdekle\u015ftirici ajan, daha fazla kabarc\u0131k, k\u00fc\u00e7\u00fck kabarc\u0131k delikleri. S\u0131cakl\u0131k y\u00fckseldi\u011finde, s\u0131v\u0131daki gaz \u00e7\u00f6z\u00fcn\u00fcrl\u00fc\u011f\u00fc azal\u0131r, b\u00f6ylece daha fazla kabarc\u0131k olu\u015fur veya \u00f6nceki ba\u015flang\u0131\u00e7 b\u00fcy\u00fcr. Daha uzun em\u00fclsiyon s\u00fcresi b\u00fcy\u00fck kabarc\u0131klar\u0131n b\u00fcy\u00fcmesini destekler. Kataliz\u00f6r miktar\u0131n\u0131n art\u0131r\u0131lmas\u0131 em\u00fclsiyon s\u00fcresini k\u0131saltabilir ve jel reaksiyonu ve kabarc\u0131k olu\u015fumunun rekabet eden reaksiyonlar\u0131 nedeniyle ince h\u00fccreli k\u00f6p\u00fck elde edilebilir.<\/p>\n

    3) K\u00f6p\u00fc\u011f\u00fcn arzu edilen a\u00e7\u0131k veya kapal\u0131 h\u00fccre yap\u0131s\u0131na sahip olup olmad\u0131\u011f\u0131, esas olarak k\u00f6p\u00fck olu\u015fumu s\u0131ras\u0131nda jelle\u015fme h\u0131z\u0131 ile gaz genle\u015fme h\u0131z\u0131n\u0131n dengede olup olmad\u0131\u011f\u0131na ba\u011fl\u0131d\u0131r. Bu denge, form\u00fclasyondaki tersiyer amin kataliz\u00f6rlerinin ve k\u00f6p\u00fck stabilizat\u00f6rleri gibi katk\u0131 maddelerinin t\u00fcr\u00fc ve dozaj\u0131 ayarlanarak sa\u011flanabilir.<\/p>","protected":false},"excerpt":{"rendered":"

    N-MetilformamidH\u0131zl\u0131 Ayr\u0131nt\u0131lar<\/strong><\/h2>\n

    Kimyasal Ad\u0131:N-Metilformamid<\/p>\n

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

    Molek\u00fcler Fom\u00fcl:C2H5NO<\/p>\n

    Molek\u00fcler A\u011f\u0131rl\u0131k:59.07<\/p>\n

    Kimyasal Yap\u0131:\"N-Metilformamid<\/p>\n

    G\u00f6r\u00fcn\u00fc\u015f: Renksiz S\u0131v\u0131<\/p>\n

    Safl\u0131k: 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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