C. C. Fluorine-free waterproofing agent: Who is the best additive for waterproof fabrics in the textile industry?
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C8, C6, and fluorine-free waterproofing agent, which one is the best additive for waterproof fabrics in the textile industry?
We often encounter waterproofing in umbrellas, tents, raincoats, and jackets. Do you know what waterproofing agents are? In the functional textile printing and dyeing industry, we often come into contact with C8 waterproofing agent, C6 waterproofing agent and fluorine-free waterproofing agent. So what are the differences between them? What are the differences in terms of effects?
C8 waterproofing agent and C6 waterproofing agent are collectively called fluorine-based waterproofing agents according to the structure of the carbon chain. Fluorine-free waterproofing agent is a non-fluorine-based waterproofing agent.
Waterproof effect:
C8 waterproofing agent has excellent effect and affordable price compared to C6. It has been put into use by major textile and leather industries many years ago, but C8 waterproofing agent contains PFOA, PFOS and APEO. The effect of C8 waterproof agent is superior to that of C6 and fluorine-free waterproof agent, and C8 and C6 have waterproof and oil-proof effects, while fluorine-free waterproof agent only has a single waterproof function, and the waterproof effect is C8>C6>fluorine-free waterproof agent;
Environmental protection:
According to the environmental protection requirements of KO-TEX Standard 100, the PFOA and PFOS content in the fluorine-based waterproofing agent must be less than 1ug/㎡. Since the PFOA and PFOS content in the C8 waterproofing agent seriously exceeded the standard and did not meet the environmental requirements, it was banned Use prohibited. PFOA stands for perfluorooctanoic acid and its ammonium-containing main salt, or “C8”. It is an important raw material for “three-proof finishing agents” for textiles. Perfluorooctanoic acid and its salts are also organic pollutants that are difficult to degrade. They are highly persistent in the environment. Over time, they will also accumulate in the environment and strongly accumulate in human and animal tissues, and will enter the food chain. , and may cause potential danger to human health and the environment for a long time. The PFOA and PFOS content in C6 waterproofing agent cannot be detected, which is lower than the detection limit of 1ug/㎡. Therefore, C6 waterproofing agent is environmentally friendly and complies with various international environmental protection requirements. Then the fluorine-free waterproofing agent is undoubtedly environmentally friendly, because it does not contain PFOA and PFOS;
Through the above analysis, we know the advantages and disadvantages of C8, C6, and fluorine-free waterproofing agent. C8 is indeed waterproof. The effect is remarkable, but due to environmental issues, it can only be replaced by C6 and fluorine-free waterproofing agents. Therefore, under various environmental protection policies, fluorine-free waterproofing agents and carbon-6 waterproofing agents have become the first choice of major textile industries.
What is fluorine-free waterproofing agent?
Fluorine-free waterproofing agent does not contain APEO, PFOA or PFOS. It is a good alternative to organic fluorine waterproofing agent.
Advantages of fluorine-free waterproofing agent:
Can be used as a waterproofing agent alone, with 100% waterproof effect;
Affordable price: equivalent to the current C8 fluorine-based waterproofing agent, and cheaper than C6 fluorine-based waterproofing agent;
> It also has water-repellent and washable effects: it can be used as a waterproofing agent synergist and a three-proof finishing synergist: used in the same bath with all fluorine-based three-proof products, it can significantly improve the initial water-repellent effect and washability, and help The comprehensive cost of agent use is greatly reduced, and it is an excellent three-proof finishing enhancement agent currently on the market
Practice has proven that the dosage is 40~50g/l with the best effect;
It is especially suitable for water-repellent finishing of chemical fibers and other synthetic fibers;
It has the effects of anti-siphoning, hydrostatic pressure resistance and anti-slurry penetration. It can be used for anti-siphoning finishing of shoe materials, which is absolutely environmentally friendly; it can also effectively curb the “degumming” phenomenon of fabric coating finishing;
Whether used alone or with It is different from the cross-linking agent used in the same bath as the three-proof products;
Fluorine-free waterproofing agent will replace it and become the most popular waterproofing agent product in the textile industry. Contains no PFOA, PFOS and APEO, has excellent waterproof effect and is washable.
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