Kufunika kwa msika kwa malo osungunuka kwambiri PP
Kusungunuka kwa madzi a polypropylene kumagwirizana kwambiri ndi kulemera kwake kwa maselo. Wapakati maselo kulemera kwa malonda polypropylene utomoni wokonzedwa ndi ochiritsira Ziegler Natta chothandizira dongosolo zambiri pakati 3 × 105 ndi 7 × 105. The Sungunulani index wa izi ochiritsirapolypropylene utomoninthawi zambiri imakhala yotsika, zomwe zimalepheretsa kugwiritsa ntchito kwawo.
Ndikukula kwachangu kwamakampani opanga ma fiber ndi makina opangira nsalu, makampani opanga nsalu osaluka akwera kwambiri. Mndandanda wa ubwino wa polypropylene umapangitsa kuti zikhale zopangira zopangira nsalu zopanda nsalu. Ndi chitukuko cha anthu, minda yogwiritsira ntchito nsalu zopanda nsalu ikukula. Pankhani ya zamankhwala ndi zaumoyo, nsalu zopanda nsalu zingagwiritsidwe ntchito popanga suti zodzipatula, masks, mikanjo ya opaleshoni, zopukutira zaukhondo za amayi, matewera a ana, ndi zina zotero; Monga nyumba ndi zinthu za geotechnical, nsalu zosalukidwa zitha kugwiritsidwa ntchito potchingira madzi padenga, kupanga misewu, uinjiniya wosungira madzi, kapena denga lapamwamba lomwe limatha kupangidwa pogwiritsa ntchito ukadaulo wa spunbond ndi singano. Utumiki wake umatalika nthawi 5-10 kuposa phula lachikhalidwe; Zosefera ndi imodzi mwazinthu zomwe zikukula mwachangu pansalu zosalukidwa, zomwe zitha kugwiritsidwa ntchito kusefera gasi ndi madzi m'mafakitale monga mankhwala owuma, mankhwala, ndi chakudya, ndipo ali ndi mwayi wamsika waukulu; Kuonjezera apo, nsalu zosalukidwa zimatha kugwiritsidwa ntchito popanga zikopa zopangira, katundu, zomangira zovala, nsalu zokongoletsera, ndi nsalu zopukutira zapakhomo.
Ndi ndendende chifukwa cha kukula kosalekeza kwansalu zosalukidwakuti zofunikira pakupanga ndi kugwiritsa ntchito kwawo zikuchulukirachulukira, monga kusungunula, kuthamangitsidwa mwachangu, zinthu zoonda, etc. Chifukwa chake, zofunikira pakukonza utomoni wa polypropylene, zopangira zazikulu zansalu zosalukidwa, zawonjezekanso chimodzimodzi; Kuphatikiza apo, kupanga kupota kothamanga kwambiri kapena ulusi wabwino wa denier polypropylene kumafunanso utomoni wa polypropylene kuti ukhale ndi ntchito yabwino yosungunuka; Ma pigment ena omwe sangathe kupirira kutentha kwambiri amafunikira polypropylene ngati chonyamulira chokhala ndi kutentha kocheperako. Zonsezi zimafuna kugwiritsa ntchito ultra-high melt index polypropylene resin monga zopangira zomwe zingathe kukonzedwa ndi kutentha kochepa.
Zida zapadera zosungunula nsalu zowombedwa ndi polypropylene yokhala ndi index yosungunuka kwambiri. Sungunulani index imatanthawuza kuchuluka kwa zinthu zosungunuka zomwe zimadutsa mu chubu chokhazikika cha capillary mphindi 10 zilizonse. The apamwamba mtengo, bwino processing fluidity wa zinthu. Mlozera wosungunuka wa polypropylene ukakhala wokwera, ulusi wopopera bwino umakhala wowoneka bwino, komanso kusefa kwa nsalu yowombedwa ndi mpweya wabwino.
Njira yokonzekera high melt index polypropylene resin
Imodzi ndikuwongolera kulemera kwa maselo ndi kugawa kwa maselo a polypropylene poyang'anira njira ya polymerization, monga kuchepetsa kulemera kwa ma polima powonjezera kuchuluka kwa ma cationic othandizira monga gasi wa hydrogen, potero kuwongolera index yosungunuka. Njirayi imakhala yochepa ndi zinthu monga catalytic system ndi zochitika zomwe zimachitika, zomwe zimapangitsa kuti zikhale zovuta kulamulira kukhazikika kwa ndondomeko yosungunuka ndikuyigwiritsa ntchito.
Yanshan Petrochemical yakhala ikupanga polymerizing kusungunula zida zowomberedwa ndi index yosungunuka yopitilira 1000 pogwiritsa ntchito zida za metallocene m'zaka zingapo zapitazi. Chifukwa chovuta kuwongolera bata, polymerization yayikulu sinachitike. Chiyambireni mliri chaka chino, Yanshan Petrochemical watengera controllable kuwonongeka polypropylene Sungunulani kuwomba chuma kupanga luso anayamba mu 2010 kutulutsa polypropylene Sungunulani kuwombeza sanali nsalu nsalu wapadera zinthu pa February 12. Pa nthawi yomweyo, mayesero mafakitale akhala akuchitikira pa chipangizo ntchito chothandizira metallocene. Chogulitsacho chapangidwa ndipo chikutumizidwa kwa ogwiritsa ntchito omwe akutsika kuti ayesedwe.
Njira ina ndikuwongolera kuwonongeka kwa polypropylene yomwe imapezeka kudzera mu polymerization wamba, kuchepetsa kulemera kwake kwa maselo, ndikuwonjezera kusungunuka kwake.
M'mbuyomu, njira zowonongeka zowonongeka zinkagwiritsidwa ntchito kawirikawiri pofuna kuchepetsa kulemera kwa maselo a polypropylene, koma njira yowonongeka ya makina otenthetsera kwambiri imakhala ndi zovuta zambiri, monga kutayika kowonjezera ndi kuwonongeka kwa kutentha, ndi njira zosakhazikika. Kuonjezera apo, pali njira monga kuwonongeka kwa akupanga, koma njirazi nthawi zambiri zimafuna kukhalapo kwa zosungunulira, zomwe zimawonjezera zovuta komanso mtengo wa ndondomekoyi. M'zaka zaposachedwa, njira zowonongeka kwa mankhwala a polypropylene zakhala zikugwiritsidwa ntchito pang'onopang'ono.
Kupanga kwa High Melt Finger PP ndi Chemical Degradation Method
Njira yowonongera mankhwala imaphatikizapo kuchitapo kanthu ndi polypropylene ndi zinthu zowononga mankhwala monga organic peroxides mu screw extruder, zomwe zimapangitsa kuti ma molekyulu a polypropylene asweke ndikuchepetsa kulemera kwake. Poyerekeza ndi njira zina zowonongeka, zimakhala ndi ubwino wa kuwonongeka kwathunthu, kusungunuka kwamadzimadzi kwabwino, njira yosavuta komanso yotheka yokonzekera, ndipo n'zosavuta kuchita kupanga kwakukulu kwa mafakitale. Iyinso ndiyo njira yomwe imagwiritsidwa ntchito kwambiri ndi opanga pulasitiki osinthidwa.
Zofunikira pazida
Malo osungunuka kwambiri ndi osiyana kwambiri ndi zida wamba zosinthira PP. Zida zopopera mankhwala osungunula zimafuna kutalika kwa chiŵerengero, ndipo mutu wa makinawo uyenera kukhala ofukula kapena kugwiritsa ntchito granulation pansi pa madzi (Wuxi Huachen ali ndi kudula kofanana pansi pa madzi); Zinthuzo ndi zoonda kwambiri ndipo zimafunika kukhudzana ndi madzi mwamsanga mutangotuluka mumutu wa makina kuti muzizizira mosavuta;
Pakuti kupanga polypropylene ochiritsira, kudula liwiro la extruder ndi mamita 70 pa mphindi, pamene mkulu kusungunula polypropylene, liwiro kudula chofunika kukhala pamwamba 120 mamita pa mphindi. Kuphatikiza apo, chifukwa cha kuthamanga kwachangu kwa polypropylene yosungunuka kwambiri, mtunda wake wozizirira uyenera kuwonjezeka kuchokera pa 4 metres mpaka 12 metres.
Makina opangira zida zosungunula amafunikira kusintha kosalekeza kwa mauna, nthawi zambiri pogwiritsa ntchito chosinthira mauna apawiri. Zofunikira zamagetsi zamagalimoto ndizokwera kwambiri, ndipo zotchingira zambiri zometa ubweya zidzagwiritsidwa ntchito mkati mwa zomangira; Malinga ndi Koyapan, zingwe zopangira mapasa opangidwa ndi zida zapadera zosungunuka zimakhala ndi zosiyana kwambiri.
1. Kuonetsetsa kuti chakudya chili chokhazikika (PP, DCP, etc.);
2. Dziwani gawo loyenera la chiŵerengero ndi malo axial otsegulira potengera theka la moyo wa chilinganizo chophatikizika (chidasinthidwa mpaka m'badwo wachitatu kuti zitsimikizire kutulutsa kosalala kwa CR-PP);
3. Kuonetsetsa kuti chala chosungunula chimakhala ndi zokolola zambiri mkati mwa kulekerera (zoposa 30 zomaliza zimakhala ndi zotsika mtengo komanso zosakanikirana poyerekeza ndi khumi ndi awiri okha);
4. Mitu ya nkhungu yapadera ya ngalande iyenera kukhala ndi zida. Sungunulani ndi kutentha ziyenera kukhala zofanana, ndipo kuchuluka kwa zinyalala kuyenera kukhala kochepa;
5. Ndi bwino kukhala okonzeka ndi okhwima ozizira kudula granulator kwa kusungunula kuwomba zipangizo (omwe ali ndi mbiri yabwino mu makampani) kuonetsetsa ubwino wa particles yomalizidwa ndi mlingo wapamwamba kalasi;
6. Zingakhale bwinoko ngati pali mayankho oyesera pa intaneti. Kuonjezera apo, kuwonjezera kwa zoyambitsa zowonongeka zamadzimadzi ku chakudya cham'mbali kumafuna kulondola kwakukulu chifukwa cha gawo laling'ono la zowonjezera. Pakuti mbali kudyetsa zida, monga kunja Brabenda, Kubota, m'nyumba opangidwa Matsunai, etc.
Zothandizira zowononga zomwe zimagwiritsidwa ntchito masiku ano
1: Dit-butyl peroxide, yomwe imadziwikanso kuti di-tert-butyl peroxide, initiator a, vulcanizing agent dTBP, ndi madzi opanda mtundu mpaka achikasu owonekera pang'ono omwe sasungunuka m'madzi komanso osakanikirana ndi zosungunulira organic monga benzene, toluene, ndi acetone. Wamphamvu oxidizing, kuyaka, ndithu khola kutentha firiji, wosamva kukhudza.
2: Sulfurizer iwiri, yofupikitsidwa ngati DBPH, dzina la mankhwala 2,5-dimethyl-2,5-bis (tert butylperoxy) hexane, molecular weight 290.44. Madzi otumbululuka achikasu okhala ndi kachulukidwe wachibale wa 0.8650 mu mawonekedwe a phokoso ndi ufa woyera wamkaka. Kuzizira ndi 8 ℃. Malo otentha 50 ~ 52 ℃ (13Pa). Mndandanda wa refractive umachokera ku 1.418 mpaka 1.419. Kukhuthala kwamadzimadzi ndi 6.5mPa. s. Kung'anima (chikho chotseguka) 58 ℃. Amasungunuka mu zosungunulira zambiri monga ma alcohols, etha, ketoni, esters, ma hydrocarbon onunkhira, ndi zina zambiri, osasungunuka m'madzi.
3: Kuyesa zala zosakanikirana
Kuyezetsa kwa chala chosungunuka kuyenera kuchitidwa molingana ndi GBIT 30923-2014 Polypropylene Melt Spray Zida Zapadera; Zida wamba zosungunuka zala sizingayesedwe. Kusungunuka kwakukulu kumatanthawuza kugwiritsa ntchito njira ya volumetric m'malo mwa njira ya misa yoyesera.
Zida zapakhomo zikuphatikizapo Chengde Youte, Guangxin Electronic Technology, Hangzhou Jinmai, Jilin Science and Education Instrument Factory, ndi zipangizo zomwe zimatumizidwa kunja zikuphatikizapo Zwick; Chengde Jinjian Testing Instrument Co., Ltd. 309232014 Polypropylene Sungunulani Utsi Wapadera Zida. Mitundu yoyesera ndi (500-2500) cm / 10min.
Panopa, pali:
1. Shandong Daoen Polymer Materials Co., Ltd
2. Hunan Shengjin New Materials Co., Ltd
3. Jinfa Technology Co., Ltd
4. Beijing Yishitong New Materials Development Co., Ltd
5. Shanghai Huahe Composite Materials Co., Ltd
6. Hangzhou Chenda New Materials Co., Ltd
7. Basel, Dalin, South Korea
Nthawi yotumiza: Apr-01-2024