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How long can flame last without air?
Combustion or burning requires oxygen of the air. So, if there's no air, the flame will extinguish immediately because there's no oxygen.
How long does flame resistant clothing last?
Flame retardent clothing would, in normal terms, last as long as the materials used in the clothing and this would vary from material to material, such as wool, linen, cotton etc. The flame retardent elements of the clothing would only be able to withstand flame and fire destruction depending on the chemicals used The most widely used flame retardent product is a mineral compound known as ATH (aluminium hydroxide). Other common types of flame retardents are organohalogen compounds and organophosphorus compounds.
How long does synthetic fabric take to decompose in a landfill site?
how long does fabrics take to decompose how long does fabrics take to decompose
Why can you hold your fingers beside the candle flame without being harmful but not above the flame?
Beside the flame the heat you experience is that heat being radiated as light - if you hold your finger too close or leave it too long, you will get harmed! Beside the flame the air is cool as cool air is being sucked into the flame. However above the flame the hot gases produced by the combustion of the wax in the flame are rising upward by convection. These hot gasses will heat you skin by conduction and you will be burned very quickly.
Is it true that redwoods don't burn down?
The wood of the tree will burn some what like Pine. But the bark is 6 inches or more thick and has natural flame retardant properties. as long as the wood is not exposed by the bark haven been broken off or there is not a large amount of dry fuel like dead falls next to the base of the tree it will not burn normal brush ans weeds that grow in the area of the trees would not burn a long time and will not degrade the bark to the point that the wood of the tree will start to burn.
What are the requirements of praban cotton flame retardant finishing process?
1.Determine the concentration of flame retardant were described In the process of making process. It should be determined according to the size of the pad fluid rate and thickness of the fabric.2.The size of the tide content The fabric after pad flame retardant drying,it is should have some of the humidity for the sake of ammonia and fabric flame retardant on the crosslinking reaction When the ammonia smoked,occur flame retardant effect and with the washing resistance.In the process of production should be monitoring the size of the tide content at any moment,and adjust,Contain too small tide will lead to inadequate crosslinking,flame retardant effect not washable,contains too much tide will lead to excess crosslinking,feel stiff,color will also have changed.3.Determine the amount of ammonia flow The amount of consumption of ammonia by per kilogram of flame retardants in theory is certain,But the actual production process should be excessive some,in order that crosslinking fully.Usually too small ammonia flow rate can lead to inadequate crosslinking,flame retardant effect of washing resistance is poor;Excess flow,cause to waste and ammonia spillover,result in poor working conditions.In practical application, also should adjust the ammonia flow according to the thickness of a fabric and the size of the flame retardant agent to achieve the best effect of flame retardant.4.The concentration of oxidant The flame retardant after ammonia smoked curing in order to make it more stable,usually adopts padding hydrogen peroxide to achieve,the amount of hydrogen peroxide should be according to the thickless of fabric, the number of the amount of flame retardants. The speed of padding oxidation liquid should not too fast,make sure have enough hydrogen peroxide on the fabric,after drafty oxidation than wash with neutral soap,oxidation time shoulds not be too long, Otherwise, it will reduce the fabric strength.
What brand of baby clothes is the most flame retardant?
Well, all pajamas are flame-resistant. You won't need to worry about pajamas. When the baby is asleep he/she is not in harms way.Even though is shrinks, you should get mostly cotton in your baby's clothing. Cotton is treated to meet flame-retardant standards. You don't need to worry that much about shrinking, because babies are constantly growing, and the clothes won't last long anyway. You may have to get one size larger to fit the baby's needs.
What kind of development trend of flame retardant textiles?
With the rapid development of textile technology, China's flame retardant textiles has been got considerable progress in recent years, and show different trends.Function compositeIn addition to the early functional textiles flame retardant heat radiation, flame retardant anti-static,in recent years, according to different application areas of textile fabrics made new demands, such as for curtains, curtain bathrooms and other wet environments, etc., in addition to flame resistant, but also requires mildew and water repellent; for taking, sofa and bed linen retardant outer fabric requirements need to have health care function. In the military field, combat uniforms and military equipment camouflage material requires not only flame retardant, but also requires a security function. In China, the flame-retardant anti-static textile research more mature, flame retardant water- and oil-repellent products also have research, develop health-care functional textile need us to concern.Green environmental protectionGreen of FR fiber refers to reduce the toxic effects process to the environment and the operator in the production , to prevent adverse effects on the fiber through the employer, when the fire broke out, will not have a "secondary poisoning." This is because the FR fibers used generally contain halogen, phosphorus, sulfur and other elements, most have greater toxicity, flame retardants and synthetic fiber production process, the operator will have some toxic effects, its "three wastes "emissions will bring more serious environmental pollution. From the environmental protection, human security and the development of halogen-free flame retardant efficiency point of view, efficient, low smoke, low toxicity, environmentally friendly flame retardant textiles are the future trends. As a typical silicone-based flame retardant halogen-free flame retardant, it is an efficient, non-toxic, low smoke, pollution-free characteristics, and having improved dispersion and processing performance characteristics.High technologyHigh technology fiber is a series of fiber with high performance and high functionality with the development of high-tech industry's development. High-tech fiber developed series of new technology in the production process, such as electrostatic spinning, gel spinning, spinning membrane crack, liquid crystal spinning, centrifugal spinning, etc., to bring new life to the synthetic fiber industry. High-tech high-temperature flame-retardant fiber is one important branch of high-tech fire-retardant fiber, due to its unique chemical structure, without adding flame retardant material or modified, itself has a high temperature and flame retardant properties. As pre-oxidized polyacrylonitrile fiber (OPANF), polybenzimidazole (PBI) fibers, polyethylene phthalate isophthalic diamine (MPIA) fibers, fibers Melamine Formaldehyde (MF) and the like.Charming FR fiberIn the high-temperature, heat radiation and a fire in the environment, workers must wear protective clothing flame or heat protective clothing. Under these conditions, the people of the thermal load is too high, difficult to adhere to the normal work efficiency for a long time. So for flame retardant textiles, it must take into account the comfort of textiles. It should take into account for the purposes of flame retardant fiber performance, spinning performance and comfort of heat and moisture.By YULONG textile
How long does an enternal flame last?
forever
Which fabric of Permanent fr overalls?
FR overalls in fact is welding protective clothing like we usually say. Fr clothing can be divided into Permanent flame retardant overalls and durability fire-retardant clothing, fabric of permanent flame retardant overalls refer to yarn or filament already have fire-retardant properties, high washing performance. While the after-treated flame retardant overalls refers to fabric have no fire-retardant properties, treatment after weaving the fabric use yarn or filament, washable performance of treated flame retardant fabric is relatively low. So What are permanent flame retardant fabric?Common fiber of Permanent fr clothing and features:(1) Nomex fiber: heat retardant fiber (scientific name: meta-aramid fiber, aramid 1313);Nomex fiber Features:1, heat-resistant permanent flame retardant fiber, high strength, high wear resistance, low shrinkage, chemical structure and stability, acid and alkali resistant and prevent corrosion of organic chemicals ,etc.2, good dimensional stability, its heat shrinkage rate was only 1% after long-term use at 250 ℃ , fire does not melt, no droplet, does not produce toxic gases;3, over 400 ℃ began to decompose, the surface of cloth began thickening when decomposition , at a temperature of 900 ℃ -1500 ℃ of heat transfer can be isolated without cracking. FR clothing produced by Nomex fiber, light weight, elastic, breathable, soft and comfortable to wear;4, due to the outstanding performance of the fabric is from the fiber itself, not auxiliaries,so it can be any washing, but its function will not change;5, the fibers are added Kevlar bulletproof fiber which increases the breaking strength and tear strength of the fabric. Nylon fiber with added carbon fiber core, so that the fabric has a permanent anti-static function;6, Nomex after oil water repellent finishing so that the fabric has a performance of water and oil repellent, stain-release and so on.(2) Kevlar fiber: High-density low elongation bulletproof fiber (scientific name: para-aramid fiber, Kevlar, domestic known as aramid 1414);Kevlar fiber Features:1, Kevlar (Kevlar) has a very good thermal stability, Fire Resistance, chemical resistance, insulation resistance, and high strength and modulus, the physical properties of Kevlar and other fibers to make a comparison, Kevlar fiber is asbestos 2-11 times the intensity is 1.6 times the strength of high-strength graphite, three times the strength of the glass fiber, the same weight of steel fiber is five times the strength. And Kevlar density is very low, almost half the density of asbestos;2, thermal stability, Kevlar hot test (TGA) is very stable until 600 ℃ have a significant weight loss;3, low aggressive, having a high content of the test strip Kevlar, exhibits less than half of the metal sheet erosion;4, wear resistance, compared with asbestos fibers, Kevlar fibers in good condition to reflect the very low abrasion resistance.Therefore, the above-mentioned flame-retardant clothing made of fabric widely used in petroleum, petrochemical, chemical, power and other industries, particularly favored by foreign labor protection department.
a scientist claims that Fabric A is better able to resist fire than Fabric B. Which options describes an experiment that will produce evidence that will support or refute her claim?
Hold each fabric over a candle flame and time how long it takes for the fabric to start to burn~Apex
What is fiber and their characteristics of permanent flame retardant overalls?
Fabric of permanent flame retardant overalls is yarn or thread already has flame retardant properties and high washing performance. While the opposite after-treatment FR coverall retardant refers to the fabric essentially does not have fire-retardant properties, after weaving fabric the yarn or thread will do after-treatment, post-processing flame retardant fabric washable relatively less performance. Then what is the permanent fire-retardant clothing fabrics,now we will introduce common fibers and their characteristics: (1) Nomex® fiber: heat and FR fiber (aramid 1313) Nomex® fiber Features: 1, heat-resistant permanent flame retardant fiber, high strength, high wear resistance, low shrinkage, chemical structure and stability, acid and alkali resistant and prevent corrosion of organic chemicals ,etc. 2, good dimensional stability, its heat shrinkage rate was only 1% after long-term use at 250 ℃ , fire does not melt, no droplet, does not produce toxic gases. 3, over 400 ℃ began to decompose, the surface of cloth began thickening when decomposition , at a temperature of 900 ℃ -1500 ℃ of heat transfer can be isolated without cracking. FR clothing produced by Nomex® fiber, light weight, elastic, breathable, soft and comfortable to wear. 4, due to the outstanding performance of the fabric is from the fiber itself, not auxiliaries,so it can be any washing, but its function will not change; 5, Nomex® after oil water repellent finishing so that the fabric has a performance of water and oil repellent, stain-release and so on. (2) Kevlar fiber: High-density low elongation bulletproof fiber (scientific name: para-aramid fiber, Kevlar, domestic known as aramid 1414); Kevlar fiber Features: 1, Kevlar (Kevlar) has a very good thermal stability, Fire Resistance, chemical resistance, insulation resistance, and high strength and modulus, the physical properties of Kevlar and other fibers to make a comparison, Kevlar fiber is asbestos 2-11 times the intensity is 1.6 times the strength of high-strength graphite, three times the strength of the glass fiber, the same weight of steel fiber is five times the strength. And Kevlar density is very low, almost half the density of asbestos; 2, thermal stability, Kevlar hot test (TGA) is very stable until 600 ℃ have a significant weight loss; 3, low aggressive, having a high content of the test strip Kevlar, exhibits less than half of the metal sheet erosion; 4, wear resistance, compared with asbestos fibers, Kevlar fibers in good condition to reflect the very low abrasion resistance. (3) Aramid IIIA fibers: aramid fibers 3A Aramid IIIA fiber is 93% of Nomex® fiber, 5% Kevlar® and 2% carbon fiber, bulletproof Kevlar® fiber is added in fiber to increase the tensile strength and tear strength of the cloth. Nylon fiber with added carbon fiber, so that the fabric has a permanent anti-static function. Therefore, the above-mentioned flame-retardant clothing made of fabric widely used in petroleum, petrochemical, chemical, power and other industries, particularly favored by foreign labor protection department.
How long does a flame last?
Until the fuel or oxygen is all consumed, whichever comes first.
How long can flame last without air?
Combustion or burning requires oxygen of the air. So, if there's no air, the flame will extinguish immediately because there's no oxygen.
Does flame have a long vowel?
Yes, the 'a' in 'flame' is long.
How long does flame resistant clothing last?
Flame retardent clothing would, in normal terms, last as long as the materials used in the clothing and this would vary from material to material, such as wool, linen, cotton etc. The flame retardent elements of the clothing would only be able to withstand flame and fire destruction depending on the chemicals used The most widely used flame retardent product is a mineral compound known as ATH (aluminium hydroxide). Other common types of flame retardents are organohalogen compounds and organophosphorus compounds.
How long will your leather rug last?
Leather rug is a tough, long-lasting fabric. Leather rugs are ideal for high-traffic areas since they can tolerate bare feet, paws, and even shoes, and they will last a long time if properly cared for.
