Ndi zida ziti zazikulu zopangira nsalu zosalukidwa zomwe zimasungunuka

Polypropylene ndi imodzi mwazofunikira kwambirizida zogwiritsira ntchitokwa nsalu zopanda nsalu, zomwe zimatha kupatsa nsalu zopanda nsalu zomwe zimakhala ndi thupi labwino kwambiri.

Nsalu zosalukidwa ndi chiyani

Nsalu zosalukidwa ndi mbadwo watsopano wa zinthu zomwe zimagwirizana ndi chilengedwe zomwe zimaphatikiza ulusi kapena ulusi wofupikitsa wa granular kudzera munjira zamakemikolo, zamakina, kapena zopangidwa ndi mankhwala, popanda kuyika ulusi munjira ya nsalu.

Chifukwa chiyani mumagwiritsa ntchito polypropylene

Polypropylene ndi imodzi mwazinthu zomwe zimagwiritsidwa ntchito kwambiri popanga nsalu zopanda nsalu, makamaka chifukwa chazifukwa izi:

1. Polypropylene ili ndi kukana kwabwino kwa kuvala ndi kulimba, zomwe zingapangitse mphamvu ndi kulimba kwa nsalu zopanda nsalu;

2. Polypropylene ndi yosavuta kukonza ndi mawonekedwe, kupanga njira yopangira nsalu zopanda nsalu zosavuta;

3. Polypropylene imasungunuka pa kutentha kwakukulu ndipo imatha kupereka mgwirizano wabwino kwa nsalu zopanda nsalu.

Makhalidwe azinthu zapadera za polypropylene za nsalu zosungunuka

Sungunulani wowombedwa wapadera polypropylene zakuthupi PP ndi chilengedwe thermoplastic polima, amene ali makhalidwe a mphamvu mkulu, kutchinjiriza wabwino, mayamwidwe otsika madzi, mkulu matenthedwe kutentha kutentha, otsika kachulukidwe, mkulu crystallinity, ndi bwino kusungunuka flowability; Panthawi imodzimodziyo, imakhala ndi kukana kwabwino kwa zosungunulira, kukana mafuta, asidi ofooka ndi kukana kwa alkali, ndipo ndi yotsika mtengo komanso yosavuta kupeza, choncho imagwiritsidwa ntchito kwambiri m'munda wa fiber.

Zofunikira pakupanga zinthu zapadera za polypropylene pansalu yosungunuka

Chifukwa chaukadaulo waukadaulo wowomberedwa, zida za PP zomwe zimagwiritsidwa ntchito ngati zida zapadera zosungunula nsalu zopanda nsalu ziyenera kukwaniritsa izi:

(1) Mlozera wosungunuka kwambiri uyenera kukhala wamkulu kuposa 400g/10min.

(2) Kugawa kwapang'onopang'ono kwa molekyulu (MWD).

(3) Low phulusa okhutira, otsika kusungunula index wa zopangira kusungunuka, mkulu mamasukidwe akayendedwe a kusungunula, amafuna extruder kupereka kupsyinjika kwakukulu kuti bwino extrude izo kuchokera dzenje nozzle, kumafuna mphamvu yochuluka yogwiritsira ntchito mphamvu ndi kuyika zida zosungunuka kuti zikhale zovuta kwambiri; Ndipo kusungunuka sikungatambasulidwe mokwanira ndikuyengedwa pambuyo potulutsidwa kuchokera ku dzenje lozungulira, zomwe zimapangitsa kuti zikhale zosatheka kupanga ulusi wa ultrafine.

Chifukwa chake, zida za PP zokha zokhala ndi index yosungunuka kwambiri zimatha kukwaniritsa zofunikira zaukadaulo wowombedwa, kupanga nsalu za ultrafine fiber nonwoven, ndikuchepetsa kugwiritsa ntchito mphamvu. Kugawa kwapang'onopang'ono kwa mamolekyulu kumakhudza kwambiri magwiridwe antchito, magwiridwe antchito, komanso kugwiritsa ntchito kwa PP kusungunuka. Popanga nsalu zopanda nsalu zosungunula, ngati kuchuluka kwa kulemera kwa maselo ndikokulirakulira ndipo pali zochulukirapo zama cell wolemera PP, kupsinjika kwa PP kumakhala kowopsa.

Ntchito ya polypropylene mu nsalu zopanda nsalu

1. Kupititsa patsogolo mphamvu ndi kukhazikika kwa nsalu zopanda nsalu

Chifukwa cha kukana kwake kovala bwino komanso kulimba kwake, kuwonjezera polypropylene kumatha kupititsa patsogolo mphamvu ndi kulimba kwa nsalu zopanda nsalu, kuzipangitsa kukhala zolimba komanso zosavala.

2. Kupititsa patsogolo kusefera kwa nsalu zopanda nsalu

Polypropylene ndi zinthu zazing'ono zomwe zimatha kusefa tinthu tating'ono poyang'anira kukula kwake popanga nsalu zopanda nsalu. Chifukwa chake, polypropylene imatha kuwonetsa kusefa kwabwino kwambiri munsalu zosalukidwa.

3. Pangani nsalu yopanda nsalu kuti ikhale yolimba kwambiri

Polypropylene imasungunuka pa kutentha kwakukulu ndipo imapereka mgwirizano wabwino kwa nsalu zosalukidwa, kupanga dongosolo lolimba pakati pa ulusi ndi kupanga nsalu zosalukidwa kukhala zokhazikika ndi zolimba.

Mapeto

Mwachidule, polypropylene, monga imodzi mwazinthu zazikulu zopangira nsalu zosalukidwa, imatha kupatsa nsalu zopanda nsalu zokhala ndi mawonekedwe abwino kwambiri ndipo zimagwira ntchito yofunika kwambiri popanga nsalu zosalukidwa.