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Fabric fire-proof performance standard
Generally, there are 2 methods for evaluating fabric fire-proof performance
1ã€According to the fabric burning speed: By the regulation method, after fabric contact the flame for a certain period of time, remove the flame, then measure the after flame time, smolder time and the length of damaged fabric. The shorter of after flame, smolder time and damaged length, the better performance the fabric got.
2ã€According to LOI sample test: Oxygen index means oxygen need of fabric burning, the high oxygen index means fabric burning need a high oxygen concentration, that is hard to burn. The volume of oxygen concentration is 21% in air, the fabric belongs to inflammable fiber when burning oxygen index is lower than 20%; it belongs to combustible fiber that oxygen index is between 20% to 26%; it belongs to flame-retardant fiber that oxygen index is between 26% to 34%, it belongs to non-flammable that the oxygen index is higher than 35%.
Note. LOI method fit technology process experiment.
Common Method of flame-retardant test:
1ã€Burning Test Method: According to relative position of sample and flame, the test can be divided into Vertical Method, 45°Method and Horizontal Method. Generally vertical method apply to flame-retardant performance test of garment fabric, decorative fabric, tent fabric etc.. 45°tilt method apply to test of decorative cloth for airplane; Horizontal method apply to test for carpet kind mat cloth and automobile interior fabrics.
2ã€LOI Method: Put sample into transparent burning cylinder vertically, in which there is a oxygen nitrogen flow blow up-forward, set fire to one end of sample, then observe combustion phenomenon, meanwhile compare flame burn duration and damaged length with specified limit value, according to same test in different oxygen concentration, it may detect minimum oxygen concentration that keep fabric burning.
By xinxiang yulong textile
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∙ 8y ago
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Which characteristics do the modacrylic flame retardant fabric have?
The modacrylic flame retardant fabric is made of the flame retardant modified acrylic fiber. The flame retardant performance of the fabric will not reduced after many times washing. The fabric can pass the EN11612(EN531),EN11611(EN470-1),EN533,16CFR,NFPA2112,ASTM standard test by the MTL, TUV, SGS. The characteristics are as bellow, 1. Good flame retardant performance 2. Arc proof 3. Anti acid 4. Anti metal filling splash 5. Anti welding spark 6. Anti-static 7. Visibility 8. Comfortable and washable 9. Wear-resisting property
Is LSZH material same as Flame retardant?
Yes if it is referred that has passed the flame test according to IEC 60332-1
Does flame retardant spray work?
Flame retardant spray does work on most materials. When it comes to fabrics however, it is not effective on many synthetic materials such as nylon and acrylic. To be sure of the effectiveness on a particular material, a test should be performed before trying practical application.
How can you test strontium nitrate ammonium carbonate and potassium sulfate?
A flame test.
Is the flame test a qualitative or quantitative test for the identity of an unknown?
just looking at the color of the flame --- qualitative
What will be the different results by different test method of flame retardant fabric?
It is a complex procedure when testing the flame retardant property of the fabric, because there are many factors to effect the fabric burning. And the factors are related to each other. Even if one same fabric behave different, the test result will be a little difference. In general, the factors are: lighting fire form, time on fire, the position of the fabric and the fire, etc. Different test method have different test result. Until now, horizontal firing, 45℃ firing and the vertical firing are the most commonly used method. When balance the flame retardant property of the fabric, we should specify the test method and the condition and the horizontal firing is the most relaxed method.With the same finished process, test by the 45℃ firing, if the flame can not burn through the fabric immediately in the fabric and the fire will increase and spread to the around. The flame retardant property is bad. When test by vertical firing, if the fabric after burning can form the expansive carbon residue, which can be in favor of the flame spread up and get good flame retardant property.As the the 45℃ firing, we suggest to use the molten drop flame retardant chemicals, which is in favor of burning through in short time. As for vertical firing , we suggest to use the form carbon flame retardant chemicals, which is benefit for the fabric to form the non flame carbon floor in short time and get the flame retardant property.by yulong tex
Which characteristics do the modacrylic flame retardant fabric have?
The modacrylic flame retardant fabric is made of the flame retardant modified acrylic fiber. The flame retardant performance of the fabric will not reduced after many times washing. The fabric can pass the EN11612(EN531),EN11611(EN470-1),EN533,16CFR,NFPA2112,ASTM standard test by the MTL, TUV, SGS. The characteristics are as bellow, 1. Good flame retardant performance 2. Arc proof 3. Anti acid 4. Anti metal filling splash 5. Anti welding spark 6. Anti-static 7. Visibility 8. Comfortable and washable 9. Wear-resisting property
Is LSZH material same as Flame retardant?
Yes if it is referred that has passed the flame test according to IEC 60332-1
Which common terms when testing the flame retardant fabric?
The flame retardant fabric is widely used in the oil, chemical, hotel and other industry. It is a problem for us to choose the flame retardant fabric. We usually search on the internet when choosing the fabric, but we can not understand many common terms. These common terms can reflect the burning of the flame retardant fabric very preciseness and perceptual intuition. Through learning the common terms, we can know about the products more clearly. Let's learn some professional terms as bellow, 1. Burning: the flammability materials move away from the fire and produce the oxidation redox exothermic reaction with lighting in the flame and non-flame area. 2. Firing: flammability materials catches the fire, the firing process without the flame and lighting in the firing area. 3. Residual fuel: the burning materials move away from the fire and also have flame burning. 4. After glow: the burning materials move away from the fire and also burn without flame. 5. Flame burning: burning with light 6. Smouldering: a slowly burning with smog, but no light 7. Light temperature: inflammation point, the lowest temperature to keep the materials burning under the specified test condition. 8. Pyrolysis: the irreversible chemical decomposition under the non-oxydic high temperature. 9. Molten drop: drop under high temperature 10. Carbonization: the process of the materials to form the carbon residue under the pyrolysis and imperfect combustion. 11. Flame retardant: some materials have the characters of prevent, slow and stop the flame. 12. Flame spread: the expansion process of the flame 13. Damage length: the longest char length under the test condition. 14. LOI: the min concentration of the oxygenic to keep the materials in burning under the test condition. By YULONG textile
What are our common flame retardant textiles standards?
(1) GB17591 "flame retardant woven fabrics"This standard specifies the flame-retardant woven fabric product classifications, technical requirements, test methods, inspection rules, and packaging and labeling. Standards divided flame retardant properties of woven fabric into two levels: 1) B1 level: damage length ≤150MM, after-flame time ≤5S, afterglow time ≤5S; 2) B2 Level: damage length ≤200MM, after-flame Time ≤15S, afterglow time≤10S. Test Method for flame property according to GB / T5455. According to the product usage or negotiated by both parties to determine the assessment level, generally applicable to the B1 level of administration and the particular needs of decorative cloth, B2 level for a variety of fabrics.(2) GB8965 "flame retardant protective clothing"This standard specifies the technical requirements for flame retardant protective clothing, test methods, inspection rules, marking, packaging, transportation and storage, only apply to workers engaged in a fire, emitting sparks, molten metal in the vicinity of the operation and in flammable substances and have Combustion dangerous place wearing flame-retardant clothing. Its flame retardant property of clothing shall be tested according to GB / T5455, and achieve B1 level requirements as specified in GB17591.(3) GB50222 "interior decoration of buildings for fire protection design"The standard of fire-retardant requirements and test methods for the home decorative fabrics (such as curtains, curtains, bedspreads, furniture, cloth, etc.) has made the relevant regulations. According to GB / T5455 test vertical method, underground civil construction decorative fabrics must meet the B1 level requirements, high-level civil construction of decorative fabric must reach B1 level requirements, high-rise residential and civil buildings must meet the hotel's bedspreads B1 level requirements, and curtains, curtain cloth and furniture have reached B1 level or B2 level requirements according to different buildings and places.
What is the fabric vertical flame retardant machine?
I. The usage and standard of the machineThe machine is used for the flame retardant property test for the garment fabric, decorative fabric, tent fabric, which have the fire proof requires. It can be used by the colleges of wool spinning, cotton spinning, poly and dyed industry and the test center, research and development department.II. Working principleThe machine is test for the fire proof property of fabric. The principle is vertical. Test the flame retardant property according the burning time, afterglow time and damage length after burning the fabric verticality.After flame time: under the specified test condition, the fire burning time after move away from the flame.After glow time: under the specified test condition, the non fire burning time after fire end or move away from the fire.Damage length: under the specified test condition, the max length of the damage fabric in fix direction.III. Main specification and the technical data1. Burner: federa I, inside dia is 11mm, incline 25°, the power is 10w;2. Preset the ignite time is 0.1～999.9s, the Chinese standard is 12s;3. The after glow time and the after flame time is 0.1～9999.9s(min 0.1s );4. The height of the flame device: 40mm;5. The dimension of the machine: 581x331x845（mm）;6. The power supply: 220v，50hz;IV.The structure1. Electric automatic ignite device, the ignite time can be preset between 0.1～999.9s2. The burning oven is made of stainless steel, the inside size is L 329 x W 329 x H 767（mm）;3. Adjusted height of flame;4. Automatic keeping of the burner.By YULONG tex
Does flame retardant spray work?
Flame retardant spray does work on most materials. When it comes to fabrics however, it is not effective on many synthetic materials such as nylon and acrylic. To be sure of the effectiveness on a particular material, a test should be performed before trying practical application.
What are the method of FR treatment?
The number of fire disaster and death rate caused by textile is more than which are caused by other reasons, and caused heavy loss of life and property. So, All countries in the world make flame retardant technical regulations of textile, and rule some textiles must be flame retardant finishing. Flame retardant finishing has two methods, one is additional agent, mix flame retardant agent and fiber original fluid, or add flame retardant agent into polymeride then spinning, make the fiber flame retardant. Another is finished, it means that make flame retardant treatment on the fiber or textile. At present, foreign countries are all developing flame retardant textile, usually use for wearing, decorate and industrial. The wearing is main for work wear, sleepwear and shirt of children and adult. Decorate textile includes the textile for airplane, train, car, ship, hotel, high building and public place. Home textile as curtain, door curtain, folding screen, table cloth, mattress, bed sheet, carpet, wall covering, sofa covering etc.. Industrial textile like tent, toy etc., include cotton, viscose, woolen, polyester, nylon, mod-acrylic and blended textile. Flame retardant textile needs different flame retardant property, it has specified standard and test methods, also need meet different requirements of textile, when choosing flame retardant agent and flame retardant technology should be taken into account. By YULONG textile
What color should the flame test carried out on a sample of chalk give?
red :)
How can you test the fire retardant property of non woven fabrics?
You can't properly, but you could hold a match or candle flame to a small sample and observe if it ignites and continues to burn when removed from the source, or goes out. The proper trade tests are carried out in controlled laboratory conditions to ensure fair, consistent results.
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.
What are some easy ways to test flame retardant fabric performance?
Below are some maneuverable methods of testing flame retardant textile property:1, matchstick test methodTesting by matchstick can evaluate the textile fire retardant function or compare fire retardant property. Taking about one pcs 2.5cm*30cm size fabric, put lighted matches under the sample, burn down the matches(or 5-12s), observe the sampple combustion condition or flame retardant effect.Once the sample burning time is not exceeding 5s, it is qualified, exceed middle line or more than 15s, it is not qualified. This means is similar to straight beam method.2, lighter test mothodThe sample size is subject to the test, heat source is the lighter, burning time is 5s, heat source putting place is similar to application condition. After fire extinguished, see the fire spread condition, if not serious, it is qualified.3, ethanol combustion test methodHeat source is 0.3mL ethanol, put into a small beaker (bottle cap is ok), the test method can be used straight beam method, horizons method or 45 degrees oblique method, the distance from ethanol and fabric can be measured by requirements, for example, carbon length, burning area, afterglow time, after flame time and combustion sdross situation.4, Tablet test methodThe method is adopted in the hexamine(HMTA), weight is 150mg, diameter is 6mm. If possible, also can use one pcs square plate(230mmx230mm, in the middle, make a 205mm diameter circular hole). Put the tablet to the center of sample(300mmx300mm) when test, use ighted matches touch tablet surface lightly, the test ending is fire extinguished or the fire spread to the tablet observe edge. Take the sample between the center of the sample with the damaged area, record the tablet fire to fire spread to the tablet edge time at the same time. The method is suitable for floor cloth, such as carpet or evaluate the reaction of combination textile to heat or fire reactivity property, it also can be used to observed the flame retardant affect test or the comparison and selection of test conditions.5, Hot metal nut methodPut a stainless steel hex nut into the electric furnace heated to 950 ℃, with crucible tongs to remove the nut, immediately put it to the p sample center(300mm * 300mm), after 30s later, take out the nut and test the glowiag time, afterglow time and record nut placed points to ignite action involved nut width to edge pressure ring time needed. This method applies to all kinds of floor cloth test.By yulong tex
