Introduction to disposable and permanent flame retardant fabrics
Editor’s note: Acid and alkali resistant fabrics are mainly used to prevent the damage to the human body caused by chemicals such as acids and alkalis, and to prolong the time for acid to penetrate from the surface of work clothes into the skin; fire-resistant fabrics do not actually catch fire, but only after leaving the flame It will be extinguished immediately. Fire-proof fabrics are divided into two types: fiber fire-proof and post-finishing fire-proof. Post-treatment fire protection is divided into two types: disposable and durable fire protection.
What is acid and alkali resistant fabric:
Acid-proof and alkali-proof fabrics are mainly used to prevent the damage caused by chemicals such as acids and alkalis to the human body, prolong the time for acid to penetrate from the surface of work clothes to the skin, so that the acid does not adhere to the surface of work clothes, and the work clothes are in acid The strength changes little after liquid erosion and can withstand strong acid pressure.
The acid and alkali resistance reaches 97.5%, which is 90% higher than the national acid-proof performance standard, and meets the requirements of gb12012-89 acid-proof workwear. Mainly used in chemical, metallurgy, mining, geology, electroplating, printing and dyeing, papermaking and other industries to make protective clothing fabrics for work types that come into contact with acids, alkalis, and chemical agents.
Acid and alkali resistant fabrics have good air permeability and are impermeable to acid and alkali liquids, oil and water. They have good acid and alkali resistance properties such as long acid penetration time, high acid pressure resistance and low leaching rate. They are very good for practitioners. protective function. Comply with the requirements of en13034 “Protective Clothing – Protection against Chemical Liquids”.
Acid and alkali resistant fabric classification:
1. General acid and alkali resistance: Acid and alkali resistance technology is added when the fabric is made. On the surface, it is no different from ordinary fabrics. Suitable for general acid-base environment.
2. Severe acid and alkali resistance: On the basis of general acid and alkali resistance fabrics, PU coating treatment is performed, which has strong acid and alkali resistance. Suitable for high concentration acid and alkali environment.
Classification of fire-proof fabrics
Usually, the fire-resistant fabrics we imagine are non-burning in everyone’s impression, but this is not the case. Fire-resistant fabrics do not actually catch fire, they just extinguish immediately after leaving the flame. There are corresponding fire protection standards, such as: en470- 1. en531, en532, nfpa2112, nfpa70e, etc.
Fireproof fabrics are divided into two types: fiber fireproofing and post-finishing fireproofing. Post-finishing fireproofing is divided into two types: disposable and durable fireproofing.
Fiber fireproofing, also called permanent fireproofing fabric, is a work done in the early stage of the entire cloth-making process. It mainly uses fireproofing fiber to weave natural color cotton cloth. Its fireproofing effect is permanent and can generally be maintained until it is washed more than 50 times. , has a good cleaning effect, especially the fireproof yarn used is polypropylene (polyacrylic, commonly known as acrylic), which shrinks and carbonizes when exposed to fire. It is extinguished as soon as the fire source is removed. It does not melt and does not produce black smoke. Secondary fire. It is commonly used in workwear fabrics.
Disposable fire retardant fabrics are ordinary fabrics that are treated with fire retardant agents during later dyeing and finishing. Its biggest disadvantage is that the fire retardant effect disappears or significantly declines after cleaning. Usually we use it in some situations where cleaning is less frequent, such as Hotel curtains, etc.
Durable fire-retardant fabrics usually adopt the “proban” production process. The fire-retardant agent used is a durable finishing fire-retardant agent for cotton fiber and its blended chemical fiber fabrics. Its main characteristics After the use of this fire retardant agent, the fabric can have good fire retardancy within 50 times of cleaning.
There is not much difference in the initial fire-retardant properties of the three, but the fire-retardant properties of the disposable fire-retardant fabric completely disappear after washing.
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