What is fiber and their characteristics of permanent flame retardant overalls?

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.

Which methods can be realized to make the fabric flame retardant?

There are the fiber flame retardant and the after finished flame retardant. Because the cost difference, the after finished flame retardant treatment is widely used in China. The two way to make the fabric flame retardant, 1. Add the fire retardant chemicals to the fiber by polymerization, blended, alloying, composite spinning, melt grafting to make the fiber flame retardant. 2. The coated flame retardant or padded the flame retardant chemicals to the fabric. This two way have two different flame retardancy. The best way is to make the modified treatment to the fabric by nano technology, which have low cost and permanent flame retardancy. And the fabric is also soft, which have get the world class standard. In general, the fiber flame retardant can take full advantage of the FR chemicals than the after finished FR fabric. It is more softer and have permanent flame retardant effects. But in the practive use, we usually use more than one chemicals or two kind of method at the same time to get the flame retardant effects. By YULONG textile

What are the Characteristics of the Aramid Flame Retardant Fabric?

The aramid fiber is the permanent flame retardant fiber, which is heat proof, high strength, high wear resistance, soft, low shrinkage, stable chemical structure, burning without drop, no poisonous and other adventure. The aramid fabric have good stability of size. The hot shrinkage is only 1% under 250℃. The fiber softening temperature is 373℃. And more than 400℃, the fiber begin to dissociate and at the same time the fabric become thick and the fiber expansion. And the fabric can isolated the heat transfer without dehiscence. For different staining method, the fabric have different performance: 1. Fiber dyed: dyed before weaving, never fade. 2. Fabric dyed: dyed after weaving, the color fastness, the standard of dry and wet rubbing is more than 3. Added the anti-static fiber and we can also treated with water oil repellent finish. And then sewing to the garment, the function is as bellow, 1. Permanent flame retardant, and the LOI is more than 28 2. Permanent anti-static 3. Permanent anti-acid alkali 4. High strength, wear proof, high tear resistance 5. No drop when burning, no poisonous gas 6. When burning, the cloth become thick, enhance the leakproofness and don't break out.

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

What is the Dyeing Basic Principle of Flame Retardant Fabric?

The dyeing is a process to make the fabric lustrous according to the dye together with flame retardant fabric through chemical or physical chemistry way. Once the dyed flame retardant fabric colour fading, the fabric has been redyed if you want the fabric recover the original color. The flame retardant fabric dyeing process including surface adsorption, internal divergence and dye fixation.1, Surface adsorptionThe dye will be adsorbed the fiber surface when dipped the fiber to the dye liquor, this is the initial stage of the dyeing process. Good appetency and high concentration dye together with moderate electrolyte will increase the fiber adsorption speed, which will help to make the dyeing pricess correctly.2, Internal divergenceThe dye will be diffused to the fiber interior after the dye adsorbed to the fiber surface. This process is the longest stage in the whole dyeing process. In the dye liquor, the fiber surface dye spreads to the low concentration fiber interior, makes the dye added to the fiber surface continuous, until the fiber dye strength same as the dye strength in the dye solution. After transformation finished, the dye adsorption finished on the fiber surface. So, adsorption and diffusion are the inalienable and simultaneous process.3, Dye fixationThe dye adsorb, diffuse and permeate to the fiber surface and interior, and also fix on the fiber with all kinds of chain, the dye and fiber are diffrent, so as the fixation style, and because of the different fixation style, so as the dye fastness.By YULONG FR tex

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

What is the testing method of flame retardant textile?

Mainly from two points to evaluate the flammability of flame retardant fabric, the property of easy to ignite, the flammability of textile (the property of flame retardant). There are two standards to evaluate the flammability of flame retardant fabric: 1. The burning rate of textile. Flame retardant fabric contact with the fire in a certainly time follow to the standard, then move the fire, to measure afterflame time and afterglow time and the char length. The shorter time of after flame and afterglow, the lower of the char length, it shows that flame retardant property of fabric is better, on the other hand, the FR property is bad. 2. Oxygen index method (LOI ). Fabric burning need oxygen, LOI is expression of oxygen needed by fiber burning, so through measure LOI can judge the FR property of fabric, the higher of LOI, the higher of oxygen concentration for keeping the fiber burning, it means that the fabric is difficult to burn. The index can be expressed by the minimum volume percentage of oxygen , what needed by sample is keep burning in nitrogen and oxygen mixed gas, LOE=oxygen concentration / (oxygen concentration + nitrogen concentration)*100%, LOI <20%, is combustible fiber, LOI between 20 ~ 26%, is flammable fiber; LOI between 26 ~ 34%, is flame retardant fiber; Oxygen index above 35%, is non flame fiber. By YULONG tex

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

Would you prefer natural fiber or manufactured fiber to survive a fire?

Natural Fibres because they're fire retardant (meaning can resist against fires) and in addition some manufactured fibres can't resist against high temperatures and will melt.

What is the most flame retardent fabric?

The most flame retardant fabric is deemed to be wool, because it is harder to catch fire and the flames are quite often extinguished by the fiber. Synthetic acrylic, nylon and polyester are the next flame retardant fabrics because they can withstand higher temperatures than natural fabrics.

What are The Classifications of Fire Retardant Textile?

FR textiles can be divided into non-flame fiber, flame retardant fiber, combustible fiber and burn easily fibers. non-flame fiber( fire cannot lit)-- LOI value was over 35, glass fiber, metal fiber, asbestos fiber, carbon fiber: flame retardant fiber(fire can lit it, but will be extinguished without fire) --LOI value was over 35, chloro fiber, aramid fiber, modacrylic fiber.: combustible fiber(fire can lit it, continued fire without fire)-- LOI value was over 20, polyester, nylon, silk, wool; burn easily fibers(burns rapidly, burns up without fire) -- LOI value was under 20, cotton, linen, viscose, acrylic, etc. Limited oxygen index LOI: under the stated experimental conditions, the material can be maintained the combustion state needed the oxygen minimum concentration of oxygen-nitrogen mixture gas. Testing method: placed a certain size sample on the sample holder, adjusting the ratio of oxygen and nitrogen, igniting the sample with a specific igniter, makes the sample self-extinguishing after burning the certain time(2 minutes), or certain damage length (40mm), under this condition, according to the oxygen /nitrogen flow to calculated the LOI.

Which fiber characteristics are most important for clothing and why?

Fiber characteristics such as strength, durability, comfort, absorbency, and breathability are important for clothing. Strength and durability ensure longevity, comfort allows for ease of wear, absorbency helps manage moisture, and breathability enhances comfort by allowing air circulation. Ultimately, these characteristics contribute to the overall quality and functionality of the garment.