Sidee loo dhalaaliyaa heerka sare ee walxaha PP?

Baahida suuqa ee barta dhalaalka sare ee PP

Waxqabadka qulqulka dhalaalka ee polypropylene wuxuu si dhow ula xiriiraa miisaankiisa kelli. Celceliska miisaanka molecular ee xabagta polypropylene ganacsiga ee ay diyaarisay nidaamka catalytic ee caadiga ah ee Ziegler Natta waa guud ahaan inta u dhaxaysa 3×105 iyo 7×105. Tusmada dhalaalka ee kuwan caadiga ahxabagta polypropyleneguud ahaan waa hooseeyaa, taas oo xaddidaysa xadka codsigooda.

Iyada oo horumarka degdega ah ee warshadaha fiber kiimikaad iyo warshadaha mashiinnada dharka, warshadaha dharka aan tolmada lahayn ayaa si degdeg ah u kacay. Faa'iidooyinka taxanaha ah ee polypropylene ayaa ka dhigaya alaabta ceeriin ee la doorbido ee dharka aan timaha lahayn. Iyada oo horumarinta bulshada, beeraha codsiga ee dharka aan timaha ahayn ayaa noqonaya mid ballaaran. Dhinaca caafimaadka iyo caafimaadka, maryo aan tolnayn ayaa loo isticmaali karaa in lagu soo saaro suudadka gooni-goonida ah, waji-xidhka, gownnada qalliinka, marada nadaafadda haweenka, xafaayadda carruurta, iyo wixii la mid ah; Dhisme ahaan iyo walxo joomatari ahaan, maro aan tolmo lahayn ayaa loo isticmaali karaa ilaalinta biyaha saqafka, dhismaha waddooyinka, injineernimada ilaalinta biyaha, ama dareemada saqafka sare leh ayaa la soo saari karaa iyadoo la adeegsanayo tignoolajiyada isku dhafan ee spunbond iyo irbad feeray. Nolosheeda adeeg waxay 5-10 jeer ka dheer tahay daamurka dhaqameed ee la dareemay; Alaabta shaandheynta ayaa sidoo kale ah mid ka mid ah alaabooyinka ugu dhaqsaha badan ee loo sameeyo maryaha aan toliyaha ahayn, kuwaas oo loo isticmaali karo sifaynta gaaska iyo dareeraha ee warshadaha sida kiimikooyinka qalalan, daawooyinka, iyo cuntada, isla markaana leh suuq weyn; Intaa waxaa dheer, maro aan tolmo lahayn ayaa loo isticmaali karaa soo saarista hargaha synthetic, bagaash, dahaarka dharka, dharka qurxinta, iyo tirtiridda maryaha isticmaalka guriga.

Waa si sax ah sababtoo ah horumarinta joogtada ah eemaro aan tol lahaynin shuruudaha wax-soo-saarkooda iyo codsigooda ay si joogto ah u kordhayaan, sida dhalaalidda, wax-soo-saarka xawaaraha sare, alaabada khafiifka ah, iwm. Sidaa darteed, shuruudaha waxqabadka farsamaynta ee xabagta polypropylene, alaabta ceeriin ee ugu weyn ee dharka aan-dhogorta lahayn, ayaa sidoo kale kor u kacay; Intaa waxaa dheer, wax soo saarka ee miiqan-xawaaraha sare ama ganaax ganaax polypropylene fiilooyinka sidoo kale u baahan polypropylene resin si ay u leeyihiin waxqabadka socodka dhalaalka wanaagsan; Qaar ka mid ah midabada aan u adkeysan karin heerkulka sare waxay u baahan yihiin polypropylene sida gudbiye leh heerkul aad u hooseeya. Dhammaan kuwan waxay u baahan yihiin isticmaalka tusaha dhalaalka aadka u sarreeya ee polypropylene resin sida walxo ceeriin ah oo lagu shaqeyn karo heerkul hoose.

Maaddada gaarka ah ee dharka dhalaalaysa waa polypropylene oo leh index dhalaalid sare. Tusmada dhalaalaysa waxa loola jeedaa tirada alaabta dhalaalaysa ee dhexmaraysa tuubada xididka caadiga ah 10kii daqiiqoba mar. Markasta oo uu qiimihiisu sarreeyo, ayaa si fiican u habayn doona dareeraha alaabta. Markasta oo ay sareeyso tusmada dhalaalidda ee polypropylene, ayaa fiilooyinku ay sii fiicnaanayaan, waxayna sii fiicnaan doontaa waxqabadka sifaynta ee dharka dhalaalaysa ee la soo saaro.

Habka loogu diyaariyo tusaha dhalaalka sare ee xabagta polypropylene

Mid ka mid ah waa in la xakameeyo miisaanka molecular iyo qaybinta miisaanka kelli ee polypropylene iyadoo la xakameynayo habka falcelinta polymerization, sida hoos u dhigista miisaanka kelli ee polymerka iyadoo la kordhinayo diiradda walxaha cationic sida gaaska hydrogen, taas oo hagaajinaysa index dhalaalka. Habkani waxaa xaddiday arrimo ay ka mid yihiin nidaamka catalytic iyo xaaladaha falcelinta, taas oo adkeynaysa in la xakameeyo xasilloonida index dhalaalka oo la hirgeliyo.

Yanshan Petrochemical waxa ay si toos ah u polymeraynaysay walxaha dhalaalka ah ee la afuufay iyada oo tusmaysa dhalaalaysa in ka badan 1000 iyada oo la isticmaalayo biraha birta ah dhawrkii sano ee la soo dhaafay. Sababtoo ah dhibka lagu xakameynayo xasilloonida, polymerization-ka ballaaran lama fulin. Tan iyo markii uu dillaacay cudurka faafa ee sanadkan, Yanshan Petrochemical waxay qaadatay hoos u dhigista polypropylene dhalaalaysa tignoolajiyada wax soo saarka wax soo saarka ee lagu sameeyay 2010 si ay u soo saarto polypropylene dhalaalaysa dhar gaar ah oo aan tol lahayn bishii Febraayo 12. Isla mar ahaantaana, tijaabooyinka warshadaha ayaa lagu sameeyay qalabka iyadoo la adeegsanayo kicinta birta. Alaabta waa la soo saaray waxaana hadda loo diray isticmaalayaasha hoose si loo tijaabiyo.

Hab kale ayaa ah in la xakameeyo nabaad-guurka polypropylene ee lagu helo polymerization-ka caadiga ah, la dhimo miisaankeeda kelli, iyo in la kordhiyo index dhalaalka.

Waagii hore, hababka heerkulka sare ee hoos u dhaca ayaa caadi ahaan loo isticmaali jiray si loo yareeyo miisaanka molecular ee polypropylene, laakiin habkan heerkulka sare ee mashiinka wax u dhimaya ayaa leh cillado badan, sida khasaare wax lagu daro iyo kuleylka kuleylka, iyo hababka aan degganeyn. Intaa waxaa dheer, waxaa jira habab ay ka mid yihiin hoos u dhigista ultrasonic, laakiin hababkani waxay inta badan u baahan yihiin joogitaanka dareerayaasha, taas oo kordhinaysa dhibaatada iyo kharashka habka. Sanadihii la soo dhaafay, hababka xaalufka kiimikada ee polypropylene ayaa si tartiib tartiib ah loo dabaqay.

Soo saarista Far dhalaalaysa Sare PP habka xaalufinta Kiimikada

Habka xaalufinta kiimikadu waxay ku lug leedahay falcelinta polypropylene ee walxaha kiimikada ah sida peroxides organic ee ku jira furaha furaha, taas oo keenaysa in silsiladda molecular ee polypropylene ay jebiso oo ay yareyso miisaankeeda molecular. Marka la barbardhigo hababka kale ee hoos u dhaca, waxay leedahay faa'iidooyinka hoos u dhigista dhamaystiran, dareeraha dhalaalidda wanaagsan, habka diyaarinta fudud oo macquul ah, waana sahlan tahay in la sameeyo wax soo saarka warshadaha ballaaran. Tani sidoo kale waa habka ugu badan ee ay isticmaalaan soosaarayaasha balaastikada ah.

Shuruudaha qalabka

Barta dhalaalka sare ayaa gabi ahaanba ka duwan qalabka caadiga ah ee wax ka beddelka PP. Qalabka lagu buufiyo alaabta dhalaalaysa waxay u baahan tahay saami dheer, madaxa mishiinkuna wuxuu u baahan yahay inuu ahaado mid toosan ama isticmaal granulation biyaha hoostooda (Wuxi Huachen waxay leedahay goyn la mid ah biyaha hoostooda); Maaddadu aad bay u dhuuban tahay waxayna u baahan tahay inay la soo gasho biyaha isla markiiba ka dib markaad ka soo baxdo madaxa mashiinka si ay u qaboojiso fudud;

Soo saarista polypropylene caadiga ah, xawaaraha goynta ee extruder waa 70 mitir daqiiqadii, halka polypropylene dhalaalaysa sare, xawaaraha goynta waxaa looga baahan yahay in ay ka sarreeyaan 120 mitir daqiiqadii. Intaa waxaa dheer, sababtoo ah xawaaraha dhaqsaha badan ee polypropylene dhalaalaysa, masaafada qaboojinta waxay u baahan tahay in laga kordhiyo mitirka 4 ilaa 12 mitir.

Mashiinka samaynta alaabta dhalaalaysa waxay u baahan tahay isbeddel joogto ah oo mesh ah, sida caadiga ah iyada oo la adeegsanayo beddelaha mesh-ka laba-geesoodka ah. Shuruudaha awoodda mootada ayaa aad u sarreeya, iyo xannibaadyo badan oo xiirid ah ayaa loo isticmaali doonaa gudaha qaybaha furka; Sida laga soo xigtay Koyapan, khadka mataanaha ah ee ka samaysan walxaha khaaska ah ee dhalaalay ayaa leh wax badan oo gaar ah.

1. Hubi quudin deggan (PP, DCP, iwm.);

2. Go'aami saamiga ku habboon iyo booska axial ee furitaanka iyadoo lagu saleynayo nolosha nuska ah ee caanaha isku dhafan (oo loo sameeyay jiilka saddexaad si loo hubiyo in si siman loo saaro falcelinta CR-PP);

3. Si loo hubiyo in farta dhalaalaysa ay leedahay wax-soo-saar sare inta u dhaxaysa dulqaadka (in ka badan 30 xabbo oo la dhammeeyey ayaa leh qiime sare oo wax ku ool ah iyo saldhig isku-dar ah marka la barbar dhigo darsin kaliya);

4. Madaxyada caaryada qashin-qubka gaarka ah waa in la qalabeeyaa. Dhallaanka iyo kuleylku waa inay noqdaan kuwo isku mid ah, iyo qadarka qashinka waa inuu noqdaa mid yar;

5. Waxaa la doorbidaa in lagu qalabeeyo granulator goynta qabow baaluq ah oo loogu talagalay alaabta dhalaalaysa (taas oo sumcad wanaagsan ku leh warshadaha) si loo hubiyo tayada walxaha la dhammeeyey iyo heerka sare ee darajada;

6. Way fiicnaan lahayd haddii ay jirto jawaab celin imtixaan oo onlayn ah. Intaa waxaa dheer, ku darida bilaabayaasha xaalufinta dareeraha ee quudinta dhinaca waxay u baahan tahay saxsanaan sare sababtoo ah saamiga yar ee lagu daro. Qalabka quudinta dhinaca, sida Brabenda laga keeno, Kubota, Matsunai ee dalka laga soo saaro, iwm.

Waxyeeleyaasha xaalufka ee hadda la isticmaalo

1: Dit-butyl peroxide, oo sidoo kale loo yaqaano di-tert-butyl peroxide, initiator a, vulcanizing agent dTBP, waa dareere aan midab lahayn ama huruud yar leh oo hufan kaas oo aan lagu milmi karin biyaha oo aan la socon karin dareerayaasha organic sida benzene, toluene, iyo acetone. Oxydisayn xooggan, guban karta, heer kulka qolka oo yara deggan, dareen la'aan saamaynta

2: Laba jeer shan sulfurizer, oo loo soo gaabiyo DBPH, magaca kiimikaad 2,5-dimethyl-2,5-bis (tert butylperoxy) hexane, miisaanka kelli 290.44. Dareere cirro leh oo cufan qaraabo ah 0.8650 oo ah qaab dhawaaq iyo budo cad caano leh. Barafka qaboojinta waa 8 ℃. Barta karkarinta 50 ~ 52 ℃ (13Pa). Tusmada dib-u-celinta waxay u dhexeysaa 1.418 ilaa 1.419. Viscosity ee dareeraha waa 6.5mPa. s. Barta fiishka (koob furan) 58 ℃. Ku milma inta badan dareerayaasha dabiiciga ah sida alkolada, ethers, ketones, esters, hydrocarbons caraf udgoon, iwm, oo aan lagu milmin biyaha.

3: Tijaabinta faraha isku dhafan
Tijaabada farta dhalaalka waxay u baahan tahay in lagu sameeyo si waafaqsan GBIT 30923-2014 Polypropylene Melt Spray Materials Special; Qalabka faraha dhalaalka ah ee caadiga ah lama tijaabin karo. dhalaalid sare waxaa loola jeedaa isticmaalka habka mugga halkii habka tirada badan ee baaritaanka.

Qalabka gudaha waxaa ka mid ah Chengde Youte, Teknolojiyadda Elektrooniga ah ee Guangxin, Hangzhou Jinmai, Sayniska Jilin iyo Warshadaha Qalabka Waxbarashada, iyo qalabka la soo dhoofiyo waxaa ka mid ah Zwick; Chengde Jinjian Testing Instrument Co., Ltd. 309232014 Polypropylene dhalaalaysa buufiyo Qalabka Gaarka ah. Qiyaasta tijaabadu waa (500-2500) cm/10 daqiiqo.

Hadda, waxaa jira:

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