Antistatic fabric flame retardant mechanism analysis

Antistatic fabric washing resistance mechanism molecular structure of the antistatic agent and the hydrophilic portion of the washability antistatic components for polyester fabrics processed with the hydrophilic portion derived from polyether segments , some sources washability the polyester segments and the entire polymer film. Polyester chain segment and the same molecular structure of polyester , heat treatment eutectic containing the fibers , so that greatly improved washability . The longer molecular chain , the greater the relative molecular mass , washability better. Plastic products for the use of internal addition method , as long as the hydrophilic and lipophilic groups in two parts with suitable , such as anti-static additives for plastic to maintain a certain compatibility, but also adsorption of moisture in the air , play antistatic effect. In other words , this ionic antistatic agent is not uniformly distributed inside the resin , the surface concentration is high , the internal low concentration . Antistatic effect mainly depends on the distribution of the resin surface monolayer . UV fabric with resin and curing the anti-static additives , antistatic agents are hydrophilic group are arranged toward the air side , the air moisture is adsorbed hydrophilic monomolecular conductive layer . When the friction and washing, the antistatic resin surface causes defects monolayer , the antistatic performance is reduced , since the resin molecules inside to keep the antistatic agent migrate to the surface , the surface defects in the monolayer can be added from the inside .
Antistatic properties length of time required for recovery , depending on the molecular antistatic migration velocity in the resin and an antistatic agent to be added , and the migration speed of the antistatic agent and the resin has a glass transition temperature , an antistatic agent with the resin the compatibility and antistatic agent relative molecular mass of size. In fact synthetic fabrics, plastic products have a certain insulation, any insulating material, there are two ways static leakage , a surface of an insulator , and the other is an insulator inside . Surface resistance of the former and the latter with the resistance of the body . For plastics and fabric lining , electrostatic most leaking from the surface , experiments confirmed that a similar rule also applies for the insulator .
Flame retardant mechanism of action of the mechanism is more complex, but nothing more so through chemical and physical means to achieve the purpose of cutting off the combustion cycle . Multifunctional composite fabric flame retardant plastics and synthetic fabrics in the combustion , with the carbon chain react violently with oxygen , on the one hand produces volatile organic combustible substances, but also generated a lot of very reactive hydroxyl radical HO. Free radical chain reactions that flame continue. Bromine -containing compound and antimony oxide flame retardants and peroxide radical initiator under the influence of heat promotes the generation of bromine radicals generated antimony bromide , which is a highly volatile gaseous material , not only to rapidly absorb discharged out of combustible material , dilute the concentration of flammable substances , but can also capture HO radicals and prevent combustion , retardant fabric to achieve better results.