The fabric rejects the pre-oxidized fiber with excellent high temperature resistance and aramid with excellent high strength, high mold, high temperature resistance and wear resistance, blended according to a certain proportion. Overcome the disadvantages of these two fibers. The advantages of both fibers are brought into play.
Flame retardant grade: The difficulty of this index is the spinning of pre-oxygenated silk and aramid. Flame-retardant items clothing fireproof cloth manufacturers after the implementation of more, the configuration and technology has been greatly changed, so that the spinning rate and yarn quality has been greatly improved, the spinning aramid paper factory rate reached more than 80%. After the relevant force giant organization testing, the indicators of the fabric have reached the relevant standard requirements, can be made of high temperature resistant, heat insulation, flame retardant protective clothing. The fabric not only has excellent strength, wear resistance, and excellent flame retardant, high temperature resistance, thermal radiation resistance, as long as the value of the import of the same type of 1113, there are excellent prospects for operation. This fabric has been proved by users to dominate in the reality, in the environment of UV protection cloth, high temperature radiation, high temperature melting drops, burning flame and so on. The fabric has high temperature resistance, heat insulation, flame retardant multifunctional composite cloth performance is good, high strength and permanent dominance strength decrease little.aramid paper factory
2 Commonly used flame retardant and fire retardant cloth auxiliary classification: a wide variety of flame retardant, classification methods are also a variety of. According to the flame retardant elements, it can be divided into halogenated flame retardant, phosphorus flame retardant, nitrogen flame retardant, etc. According to the use of flame retardant and polymer in the form, divided into adding type and reaction type; According to the durability of flame retardant fabric, it can be divided into three kinds: non-durable flame retardant finishing agent, semi-durable flame retardant finishing agent and durable flame retardant finishing agent. According to the type of compound can be divided into inorganic flame retardant and organic flame retardant. The following mainly introduces the flame retardant work clothes classified by the last two methods.
1.1 Classification by durability of fabrics aramid paper factory
1) non-durable flame retardant finishing agent: also known as temporary flame retardant finishing agent, most of them are water-soluble (or emulsion) inorganic salts. The flame retardant is dissolved in water, and the fabric can be used after dipping and drying. There is also a double bath, the second bath with ammonia or soda ash, so that the oxide deposited on the fabric. This method is simple and cheap, but the feel of the fabric is poor, and the flame retardant effect decreases greatly after washing. It is often used in disposable protective clothing.
(2) semi-durable flame retardant finishing agent: the flame retardant textiles treated with this process can be gently washed for 1 ~ 10 times, but not resistant to high temperature soap washing. The method includes urea phosphoric acid method (usually called Banflam method), urine phosphate method, ammonium phosphate – methyl acetate mixed solution method.
(3) Durability flame-retardant finishing agent: The chemical method is used for polymerization or condensation on the internal surface of the fiber to form water-insoluble polymer, and the washing resistance is generally required to be more than 30 times. The main methods include Ciba (CP) method and Proban method. CP process was created by Ciba Company, Switzerland. The process is easy to implement and the flame-retardant effect is remarkable. The disadvantage is that the strength loss of the fabric is larger and the influence on the performance of the garment is larger. Proban method was created by British Aubry Wilson Co., LTD., this method finished fabric, flame retardant effect is good, especially after the treatment of fabric feel and strong maintenance is incomparable to any other finishing method, but this method is more dangerous, serious environmental pollution, so the promotion is limited.
2.2 Classification of flame retardants by compound type
(1) inorganic flame retardant: Inorganic flame retardant is the main role of heat absorption, the main varieties have antibacterial deodorant cloth aluminum hydroxide, magnesium hydroxide, red phosphorus, antimony oxide, molybdenum oxide, ammonia molybdate, zinc borate, zinc oxide, zirconia, zirconia, zirconia, etc., which with aluminum hydroxide, magnesium hydroxide, red phosphorus, antimony oxide is the most widely used, especially aluminum hydroxide, magnesium hydroxide can not only play a flame retardant effect, but also can play To fill action. They have the characteristics of good thermal stability, high efficiency, smoke suppression, drip resistance, safe filling, basically no pollution to the environment and cheap price, etc., and have been widely used in halogen-free flame retardant materials. But inorganic flame retardant fire retardant cloth washing resistance is poor, this is because inorganic flame retardant has strong polarity and hydrophilicity, and non-polar fabric compatibility is poor. At the same time, in order to meet the prescribed flame retardant requirements, inorganic flame retardants are added in large amounts, which has a great impact on the mechanical properties and processing properties of materials. Therefore, in recent years, the research on the superrefinement and nanization of traditional inorganic flame retardants has received unprecedented attention. In addition, in order to reduce the amount of flame retardant with the same flame retardant effect, it is also the research direction of flame retardant in recent years to combine flame retardant and study the synergistic effect of flame retardant.
(2) organic flame retardants: organic flame retardants are divided into phosphorus series and halogen series. The former is very limited in its use. Halogenated flame retardants mainly include chlorine and bromine. However, the effect of chlorine flame retardants is much worse than bromine flame retardants, because it is not easy to produce free chlorine group. Anti-wrinkle and non-ironing fabric, in addition, due to the corrosion and toxicity of bromide after thermal decomposition is relatively small, so a small amount of use can achieve the same flame retardant effect as chloride. So brominated flame retardants are much more common. However, from the point of view of the overall use, because of the shortcomings of halogenated flame retardants, which contain halogenated acid in their decomposition products, large smoke and harmful to human body, they are gradually replaced by other inorganic flame retardant and fireproof cloth additives.
Post time: Jan-29-2023