News Details
Flame retardants for organophosphate cotton
2017-10-21 13:43:53
Flame retardants for organophosphate cotton
Organophosphorus cotton with flame retardants in use process, with the increase of pH value, and breaking strength of the fabric color distortion value increased gradually. The reason is: high pH, the crosslinking process of H + reduction, catalytic crosslinking degree is reduced. In addition, with the increase of pH value, the LOI and crease recovery Angle increased first and then down slowly, after washing the LOI have the same change trend, but after washing the crease recovery Angle reduced. Therefore, the pH value should select 3.5.
With the increase of catalyst dosage, breaking strength and color distortion value is slightly lower, while the LOI first increases then decreases. The reason is that: the catalyst slants small, inadequate flame retardant cotton fiber and the crosslinking, and use too much easy to happen since the crosslinking. 10 g/L reach maximum when the LOI, and after wash still retains the good flame retardant and anti-wrinkle effect. Therefore, catalyst selection 10 g/L.
With the increase of number of washing, the LOI and crease recovery Angle start falling faster, when more than 30 times, change the basic leveling off, but after 50 times washing, and the LOI of the fabric crease recovery Angle is 26.4 ° and 26.4 ° respectively. The fabric after washing 50 times still have certain flame retardant properties, good washing resistance. In addition, the retention of flame retardant effect can be verified by the weight loss rate of the fabric after washing.
Raw cotton cloth quality retention rate of 94%, at 272 ℃ with the temperature, mass loss increase. Quality retention rate of 20%, at 384 ℃ after mass loss slows, quality retention rate of about 11% to 800 ℃, the department of organophosphorus in flame retardant finishing of cotton fabric in mass loss in the process of heating up faster.
Reason is that organic phosphorus is cotton with compounds containing phosphorus flame retardants will be transformed into phosphoric acid at high temperature, heated phosphate will in turn into metaphosphate, poly phosphoric acid, with phosphoric acid and poly phosphoric acid has strong water, have a catalytic dehydration carbonization effect on cotton fiber, cause began to heat up in flame retardant finishing of cotton fabrics carbonization speed, mass loss earlier. 228 ℃ when the quality retention rate of 94%, then the mass loss, 322 ℃ when the quality retention rate of 55%, after the mass loss is slowing, 800 ℃ quality retention rate > 30%. The reason is: make the cotton fabric flame retardant form stable carbon layer, good quality retention rate.
An organophosphate flame retardant was prepared from melamine, dimethyl phosphite and aldehydes. Thermal analysis results show that the temperature to 800 ℃, the quality of treated fabrics retention rate > 30%.
Trimethyl phosphate (TMP) use is mainly used in medicine, pesticides, solvents and extractants, used as a solvent, extraction, determination of zirconium and GC stationary liquid, the ester is used in medicine and pesticide solvent and extractant. Pesticide intermediates. In Japan, Trimethyl phosphate use as anti stain of textile oil and polymer, flame retardant additive for lithium ion battery.
Trimethyl phosphate is currently the main market in India, mostly for textile auxiliaries, the products are mainly exported to Japan, South Korea, Thailand, India.
As of Trimethyl phosphate use need to do not understand, please contact us!
Optimized finishing technology of finishing agent for: flame retardant, 400 g/L, catalyst MgCl2 10 g/L, pH value of 3.5, working liquid for 10 min, 2 no.2 rolling, 80 ℃ drying 3 min, 170 ℃ baking 3 min. This condition the LOI is 30.6, crease recovery Angle is 240.6 °.
After 50 times standard washing, the LOI can reach 26.4, crease recovery Angle is 188.5 °, show that the flame retardant performance and good washing resistance.
With the new technology in the development, the researchers used capsule coating technology, adopt different capsule, taking multiple coated technology, also made a breakthrough on color, implements the coated surface after white white degree of the red phosphorus, basically overcomes the problem of easy red phosphorus moisture absorption, easy oxidation, breakthrough the limitations on the color at the same time, this new type of whiteness capsule red phosphorus, also called the white degree of red phosphorus flame retardants, will usher in a new development opportunity.
Phosphorus-containing flame retardant - four hydroxymethyl phosphorus chloride THPC for short, is a kind of important flame retardant finishing agent, can be made of phosphine, formaldehyde and hydrochloric acid reaction system: is a kind of flame retardant finishing agent is mainly used for cotton cellulose.
Can be crosslinked with cellulose to produce flame retardant effect with strong durability. Mixed with the resin finishing agent, such as hydroxymethyl melamine, can improve the resistance to wash, and change the crease resistance and anti-corrosion. In the mid-1980s, the us patent introduced THPS and nh3 preshrunk into preshrunk, known as THPN.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Organophosphorus cotton with flame retardants in use process, with the increase of pH value, and breaking strength of the fabric color distortion value increased gradually. The reason is: high pH, the crosslinking process of H + reduction, catalytic crosslinking degree is reduced. In addition, with the increase of pH value, the LOI and crease recovery Angle increased first and then down slowly, after washing the LOI have the same change trend, but after washing the crease recovery Angle reduced. Therefore, the pH value should select 3.5.
With the increase of catalyst dosage, breaking strength and color distortion value is slightly lower, while the LOI first increases then decreases. The reason is that: the catalyst slants small, inadequate flame retardant cotton fiber and the crosslinking, and use too much easy to happen since the crosslinking. 10 g/L reach maximum when the LOI, and after wash still retains the good flame retardant and anti-wrinkle effect. Therefore, catalyst selection 10 g/L.
With the increase of number of washing, the LOI and crease recovery Angle start falling faster, when more than 30 times, change the basic leveling off, but after 50 times washing, and the LOI of the fabric crease recovery Angle is 26.4 ° and 26.4 ° respectively. The fabric after washing 50 times still have certain flame retardant properties, good washing resistance. In addition, the retention of flame retardant effect can be verified by the weight loss rate of the fabric after washing.
Raw cotton cloth quality retention rate of 94%, at 272 ℃ with the temperature, mass loss increase. Quality retention rate of 20%, at 384 ℃ after mass loss slows, quality retention rate of about 11% to 800 ℃, the department of organophosphorus in flame retardant finishing of cotton fabric in mass loss in the process of heating up faster.
Reason is that organic phosphorus is cotton with compounds containing phosphorus flame retardants will be transformed into phosphoric acid at high temperature, heated phosphate will in turn into metaphosphate, poly phosphoric acid, with phosphoric acid and poly phosphoric acid has strong water, have a catalytic dehydration carbonization effect on cotton fiber, cause began to heat up in flame retardant finishing of cotton fabrics carbonization speed, mass loss earlier. 228 ℃ when the quality retention rate of 94%, then the mass loss, 322 ℃ when the quality retention rate of 55%, after the mass loss is slowing, 800 ℃ quality retention rate > 30%. The reason is: make the cotton fabric flame retardant form stable carbon layer, good quality retention rate.
An organophosphate flame retardant was prepared from melamine, dimethyl phosphite and aldehydes. Thermal analysis results show that the temperature to 800 ℃, the quality of treated fabrics retention rate > 30%.
Trimethyl phosphate (TMP) use is mainly used in medicine, pesticides, solvents and extractants, used as a solvent, extraction, determination of zirconium and GC stationary liquid, the ester is used in medicine and pesticide solvent and extractant. Pesticide intermediates. In Japan, Trimethyl phosphate use as anti stain of textile oil and polymer, flame retardant additive for lithium ion battery.
Trimethyl phosphate is currently the main market in India, mostly for textile auxiliaries, the products are mainly exported to Japan, South Korea, Thailand, India.
As of Trimethyl phosphate use need to do not understand, please contact us!
Optimized finishing technology of finishing agent for: flame retardant, 400 g/L, catalyst MgCl2 10 g/L, pH value of 3.5, working liquid for 10 min, 2 no.2 rolling, 80 ℃ drying 3 min, 170 ℃ baking 3 min. This condition the LOI is 30.6, crease recovery Angle is 240.6 °.
After 50 times standard washing, the LOI can reach 26.4, crease recovery Angle is 188.5 °, show that the flame retardant performance and good washing resistance.
With the new technology in the development, the researchers used capsule coating technology, adopt different capsule, taking multiple coated technology, also made a breakthrough on color, implements the coated surface after white white degree of the red phosphorus, basically overcomes the problem of easy red phosphorus moisture absorption, easy oxidation, breakthrough the limitations on the color at the same time, this new type of whiteness capsule red phosphorus, also called the white degree of red phosphorus flame retardants, will usher in a new development opportunity.
Phosphorus-containing flame retardant - four hydroxymethyl phosphorus chloride THPC for short, is a kind of important flame retardant finishing agent, can be made of phosphine, formaldehyde and hydrochloric acid reaction system: is a kind of flame retardant finishing agent is mainly used for cotton cellulose.
Can be crosslinked with cellulose to produce flame retardant effect with strong durability. Mixed with the resin finishing agent, such as hydroxymethyl melamine, can improve the resistance to wash, and change the crease resistance and anti-corrosion. In the mid-1980s, the us patent introduced THPS and nh3 preshrunk into preshrunk, known as THPN.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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