Iziphumo ze-PTFE Emulsion pH Ixabiso kuZinzo lwayo kunye neNtsebenzo yokuPhumelela

I-Jiangsu Aokai New Materials, i-PTFE umenzi welaphu lobushushu obuphezulu, uchaza indlela ixabiso le-pH le-polytetrafluoroethylene (PTFE) emulsion isebenza njengeparameter ebalulekileyo eqinisekisa ukuqhutyelwa kwayo kunye nokusebenza kwesicelo. Iimveliso eziphambili zihlala zigcina i -alkaline ethambileyo ezinzileyo ye-pH ye-8.0-10.5 . Ukuguquguquka kwe-pH kunokubangela ukusabela kwetsheyini ukusuka kumanqanaba amancinci ukuya kuma-macro, okuchaphazela uzinzo lwenkqubo (umzekelo, ubomi beshelufu, amandla okumelana nokuqina) kunye nokusebenza kokungena (umzekelo, ukungeneka, umgangatho wokugqibela wokugquma).

1. Iziphumo kuZinzo

I-emulsion ye-PTFE yinkqubo engazinzanga ye-thermodynamically nozinzo oluxhomekeke ikakhulu kwi-electrostatic repulsion phakathi kwe-PTFE microparticles. I-pH ilawula ngokuthe ngqo le bhalansi ephambili.

I-Electrostatic Stabilization Mechanism (Zeta Potential)

Kwindawo ebuthathaka ye-alkaline, i-PTFE i-microparticles ihlawuliswa kakubi nge-adsorbing hydroxyl ions (OH⁻), kunye ne-Zeta enokubakho malunga -50 mV ukuya -65 mV . Oku kugxothwa okunamandla kwe-electrostatic kwanele ukunqoba amandla e-van der Waals kunye nokugcina amasuntswana ahlakazekile.Ukuba i-pH yehla kwindawo ye-isoelectric ye-PTFE (malunga ne-pH 2.9-3.2), iintlawulo ze-surface zingathathi hlangothi, i-Zeta enokubakho isondela kwi-zero, kwaye i-emulsion iyancipha ngokukhawuleza kwaye iqhube i-coagulation engenakuguquleka.

Ukuzinzisa isiphumo sokusiNgqongileyo kweAlkaline

I-emulsions ye-PTFE yoRhwebo igcinwa i-alkaline ebuthathaka kakhulu ngenxa yezi zizathu zilandelayo:

· Ukuthintela ukukhula kwe-microbial : Indawo ebuthathaka ye-alkaline icinezela ukukhula kwebhaktheriya, ibathintele ekutyeni i-surfactants kunye nokunciphisa i-emulsion.

· Ukucinezelwa kokuthotywa kwe-acidic : Imekobume yealkaline yenza izinto ezishiyekileyo ezineasidi zingasebenzi kwipolymerization, zithintela ukubola kwezixhobo kunye nokwehla kokusebenza.

Imingcipheko ye-Acid Addiction

Xa kulungiswa i-pH kunye ne-asidi efana ne-acetic acid, i-asidi kufuneka yongezwe ngokucothayo kwimilinganiselo emincinci ngokuvuselela okuthambileyo kunye nokuhlanjululwa kwangaphambili. Ukongezwa ngokukhawuleza okanye i-asidi egqithisileyo iya kuphazamisa ibhalansi yentlawulo yenkqubo kwaye ibangele ukuphuka kwe-emulsion ngokukhawuleza.

2. Iziphumo kwiNtsebenzo ye-Impregnation

Impregnation idinga i-emulsion ukuba ingene ngokufanelekileyo kwi-substrate kwaye yenze isambatho esifanayo. I-pH ichaphazela le nkqubo ngokuyinhloko ngokuguqula i-viscosity, ukumanzi, kunye nentlawulo yomhlaba wenkqubo.

Ukunyamezela kunye nokubambelela

i-pH ichaphazela ukuziphatha kwe-rheological ye-emulsion. I-pH efanelekileyo ilungiselela ukusasazeka kunye nokungena kwe-capillary kwi-substrate surface kwaye igweme iziphene. I-pH ephantsi kakhulu okanye ephezulu inokunciphisa ukunamathela kwi-coating.

IParameter engundoqo yeNkqubo yokuBambisana

Ekulungiseleleni izinto ezidibeneyo, ukulungelelanisa i-pH kuvumela ukulawula amandla e-Zeta yeentlobo ezimbini okanye ngaphezulu zeengqungquthela, okwenza ukuba i-uniform kunye ne-coagulation esebenzayo idibanise ngokusebenzisa i-electrostatic interaction. Ngokomzekelo, ukulungelelanisa i-pH ye-carbon black and PTFE emulsion umxube we-emulsion kwi- 7-10  ifezekisa i-coagulation epheleleyo ngaphandle kwee-coagulants ezongezelelweyo.

Kwizinto eziNtsha ze-Aokai, ulawulo lwe-pH kulo lonke ulungiselelo lwe-emulsion kunye nemveliso lugubungela ubomi obupheleleyo be-PTFE emulsion ukusuka kwindawo yokugcina ukuya ekusebenzeni kwemveliso yokugqibela, okwenza kube yimfuneko ukuxhaphaza ngokupheleleyo iimpawu ezibalaseleyo zezinto ze-PTFE.

Olu lwazi lungasentla lunikezelwe nguJiangsu Aokai New Materials Technology Co., Ltd.

Iiparameters ezineenkcukacha, iimeko zesicelo kunye nezisombululo ezilungelelanisiweyo zoluhlu lwethu olupheleleyo lweemveliso ezibandakanya i-PTFE yobushushu obuphezulu, i-PTFE iteyiphu yobushushu obuphezulu, i-PTFE high-temperature mesh belt, amabhanti angenamthungo omatshini bokudibanisa, ilaphu le-PTFE elisecaleni elinye, i-high-temperature-high-temperature tape, i-fiberglass enganyangekiyo kwi-conveyor yoqhagamshelwano kunye nathi

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