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Durable flame retardant finishing of cotton fabrics Optimization

Author: DingZuoZuo
Tutor: ZhangXiaoDong
School: Qingdao University
Course: Textile Chemistry and Dyeing and Finishing Engineering
Keywords: Cotton fabric Durable flame retardant finishing optimization Free formaldehyde content Pilot
CLC: TS195.6
Type: Master's thesis
Year: 2005
Downloads: 375
Quote: 6
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Abstract


With the improvement of people's living standards , wear comfortable cotton fabric demand growing number of increasingly high requirements for textile finishing . Worldwide each year because the fabric caused by fire about 40-50% of the world's total amount of fire , so to speed up the fabric flame retardant finishing significance is very substantial . Flame retardant cotton fabric is Pyrovatex CP and CFR -201 , although the flame-retardant effect is better, but the prevalence of free formaldehyde in the finished fabric is too high, and the process of taking the release formaldehyde . How to reduce the free formaldehyde content of the finished fabric performance is more consistent with the requirements of environmental protection has been dyeing and finishing workers are a hot research . The main topic is to resolve this problem and now the CFR - 201 type flame retardants and melamine crosslinking agent is optimized CFR -201 pre- intermediates and methylated melamine formaldehyde resin to replace the original flame retardant and a crosslinking agent in order to reduce the content of formaldehyde . Synthesis the dimethoxy phosphine carboxypropionamide and six methylated melamine formaldehyde resin , and the experimental influencing factors are discussed, finally got the best synthesis conditions . And small scale in the laboratory on the basis of the pilot , and then the application of synthetic flame retardants, crosslinking agent , flame retardant process variations on the performance of cotton fabric , and ultimately determine the appropriate flame retardant prescription and processes. The results showed that , after optimization, flame retardant properties and use the same performance of CFR -201 , and small laboratory scale and pilot synthetic flame retardant cotton fabric flame retardant effect is the same , to achieve the requirements of the fire-retardant , the indicators also reached requirements: tear strength retention rate of about 80% , wrinkle recovery angle greater than 240 degrees , carbon about 6cm long , the whiteness decreased by 8.5% , finishing the fabric softer , especially the finished fabric the free formaldehyde content significantly decreased than the previous the flame retardant CFR - 201 , washed with water only 86ppm, more than the original non-modified flame retardants 180ppm decreased substantially reaches the target of the experiment , and for the cotton fabric flame retardant finishing move from the laboratory to plant large-scale application laid a theoretical and practical basis .

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CLC: > Industrial Technology > Light industry,handicrafts > Textile industry,dyeing and finishing industry > Dyeing and finishing industry > Finishing > The finishing of a variety of fiber and its products
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