Polyhexamethylene Guanidine (PHMG) yog siab -molecular- hnyav cationic polymer nrog cov tshuaj formula (C7H15N3)n·x(HCl) thiab CAS Tsis yog. 57028-96-3. Nws cov pab pawg neeg guanidine tau txais txiaj ntsig zoo ua tiav qhov dav -spectrum antimicrobial kev ua haujlwm los ntawm kev cuam tshuam ntawm microbial cell los ntawm kev ua haujlwm tsis zoo ntawm cov phab ntsa ntawm cov phab ntsa. permeability thiab metabolic enzyme ua haujlwm. Nws nthuav tawm qhov tsawg kawg nkaus Inhibitory Concentration (MIC) tsawg li 0.5-2 ppm tiv thaiv Gram- cov kab mob zoo thiab pwm, thiab muaj qhov kub thiab txias decomposition ntau tshaj 222 degree, ua rau nws tsim nyog rau daim ntawv thov uas yuav tsum tau ntev - tiv thaiv kab mob.
Kev tsom xam ntawm cov yam ntxwv tseem ceeb:
1. Antimicrobial Efficacy and Safety: It achieves rapid microbial elimination by dissolving cell membrane lipids and blocking ATP synthesis; it demonstrates a kill rate of >99.9% against *Staphylococcus aureus* and *Escherichia coli*. With an acute oral LD50 of >5000 mg/kg thiab tsis muaj qhov tshwm sim tshwm sim hauv kev kuaj tawv nqaij khaus, nws ua tau raws li qhov tsawg - toxicity yuav tsum tau rau cov khoom siv hauv tsev.
2. Physicochemical Stability: Nws cov tshuaj aqueous tswj pH ntawm 6.5-8.5 thiab viscosity ntawm 5 mPa·s ntawm 25 degree. Nws yog sib xws nrog cov tsis yog -ionic surfactants thiab tseem ua haujlwm ruaj khov nyob rau hauv qhov kub ntawm 20-100 degree, ua rau nws tsim nyog rau kev tiv thaiv pwm hauv tshav kub- cov ntaub ntawv hauv tsev rhiab heev.
3. Environmental Friendliness: It boasts a biodegradation rate of >90% thiab generates xoom VOC emissions. Nws tau txais kev pom zoo raws li EU Biocidal Products Regulation (BPR) thiab rau zaub mov-cov ntaub ntawv tiv tauj los ntawm US FDA. Tsis zoo li quaternary ammonium ntsev, nws tsis muaj kev pheej hmoo ntawm inducing microbial tsis kam, ua rau nws haum rau ntev -lub sij hawm, rov siv dua.
Daim Ntawv Thov Scenario hauv Cov Khoom Siv Hauv Tsev:
1. Txhim kho Ntoo Pwm Tiv Thaiv: Qhov sib ntxiv ntawm 0.5% kev daws txuas ntxiv pwm -dawb lifespan ntawm plywood thiab nruab nrab- ntom fiberboard (MDF) mus rau 12 lub hlis. Kev sim cov ntaub ntawv los ntawm ib lub chaw tsim khoom tau pom tias cov pwm tshwm sim hauv Suav fir cov qauv raug txo los ntawm 78% mus rau 3.2%.
2. Functional Upgrades for Structural Adhesives: At an addition rate of 0.3%–0.8%, it extends the curing time of neutral silicone sealants by no more than 15%. Furthermore, it maintains a shear strength retention rate of >92%.
3. Antimicrobial Upgrades rau Coatings: Thaum sib xyaw nrog dej -raws li acrylic emulsions los tsim cov tshuaj tiv thaiv kab mob, nws tsim ib qho inhibition cheeb tsam ntawm 21 mm tiv thaiv * Aspergillus niger *, yog li ua tau raws li qhov yuav tsum tau muaj ntawm GB / T 21866 tus qauv. 4. Kev tiv thaiv pob zeb hauv kev tiv thaiv kev sib tsoo Lub kaum sab xis ntawm marble nce los ntawm 62℃mus rau 108 degree, thiab tus nqi tua tawm tsam * Bacillus subtilis * tshaj 90%.
Kev sib piv ntawm cov txheej txheem tsis qhia pom tias PHMG ua tau zoo tshaj benzalkonium chloride thiab hydrogen peroxide nyob rau hauv cov nqe lus ntawm MIC, thermal stability, compatibility nrog tsev cov ntaub ntawv, lub sij hawm ntawm sustained antibacterial kev ua si, thiab migration theem nyob rau hauv adhesives.
