Flame retardant antibacterial cotton high-loft nonwoven fabrics

Abstract

Flame retardant treated gray cotton fibers were blended with antibacterial treated gray cotton fibers and polyester/polyester sheath/core bicomponent fibers to form high-loft fabrics. The high flame retardancy (FR) and antibacterial property of these high lofts were evaluated by limiting oxygen index, vertical flame testing, and antimicrobial tests against S. aureus (ATCC 6538), a Gram-positive bacterium, and K. pneumonia (ATCC 4352), a Gram-negative bacterium. The blended high-loft nonwoven fabrics, apart from the control blend number 5, had high LOI values greater than 24.7. Samples should have a higher LOI value than the threshold value of 20.95. All the blended high-loft nonwoven fabrics passed the vertical flame test and the char length increased with the decrease in the proportion of the SRRC FR cotton in the blends. The blended high-loft nonwoven fabrics were effective in reducing the bacteria by 99.9% for both types of bacteria tested. FR gray cotton fiber obtained from the treatment of SRRC 2 formulation (blend number 4) also showed good antibacterial properties.

Flammability Characteristics of Chemical Treated Woven Hemp Fabric

“…during thermal decomposition. The environment in the area of inflamed substrate could be diluted by the inert gasses and this situation complicates fuel gas such as oxygen access into the flammable volatiles of combustion product [12]. This situation creates flame retardancy and this mechanism is also known as 'gas dilution theory' [36].…”

“…The rate of the initial rise in temperature depends on the specific heat of the fibre, thermal conductivity, and the latent heat of fusion. Since the 1950s up to present, many researchers have been conducted on fire retardant chemicals in many aspects such as its toxicity, durability and new chemical products [2,11,12].…”

Flammability characteristics of chemical treated woven hemp fabric reinforced vinyl ester composites

“…This situation is similar to the several flame retardant generated inert gasses such as CO 2 , SO 2 , H 2 O, NH 3 , etc. during thermal decomposition thus complicates fuel gas such as oxygen access into the flammable volatiles of combustion product [46]. This situation creates flame retardancy and this mechanism is also known as 'gas dilution theory' [47].…”

Determination of Optimal Concentrations of Agents for Preparation of Multifunctional Water and Oil Repellent and Flame Retardant Finish

“…Na trgu so različna anorganska in organska ognjevarna sredstva za zaščito celuloznih vlaken [10], ki se razlikujejo v kemijski strukturi, učinkovitosti, pralni obstojnosti, ekološki sprejemljivosti in ceni. V najsodobnejših raziskavah se uporabljajo fosforjeve, dušikove, silicijeve in žveplove spojine in njihove kombinacije [11][12][13][14][15][16][17][18][19][20][21]. Ognjevarna sredstva delujejo po različnih mehanizmih, ki vključujejo odstranjevanje toplote, zmanjšanje dostopa kisika in redčenje zmesi gorljivih plinov, zmanjšanje tvorbe gorljivih hlapnih produktov in povečanje količine pooglenelega ostanka, dehidriranje vlaken in nastanek pooglenelega ostanka.…”

“…1, str. [13][14][15][16][17][18][19][20][21] enaki koncentraciji sredstva OP (200 g/l) dolžina raztrganine povečuje, ti rezultati narekujejo uporabo čim nižje koncentracije sredstva FAS. Iz tega sledi, da je najprimernejša koncentracija sredstva FAS enaka 100 g/l, ki v prisotnosti 200 g/l sredstva OP že zagotovi oceno oljeodbojnosti, enako 6.…”