News Details
Polyacrylamide paint crosslinking agent
2017-5-20 19:54:31
Polyacrylamide paint crosslinking agent,It is a kind of linear water-soluble polymer which is one of the most widely used in the chemical fiber industry.
Because unit contains ene acyl polyacrylamide structure, easy to form hydrogen bonding, make it has good water solubility and high chemical activity, easily obtained by grafting and crosslinking branched chain or network of a variety of modified polyacrylamide series products, the polymer can be homopolymer, can also be a copolymer.
In the production of viscose fiber, polyacrylamide can be used as a crosslinking agent, used for crosslinking of two or more than two different polymers, increase fixation ratio of blending system, such as in order to reduce the spinning forming process of the flame retardant: the loss of high polymer material such as protein, chitin, typically in the preparation process of functional additives to join or use crosslinking agent.
The crosslinking of polyacrylamide and cellulose. The cellulose grafted acrylamide was reported earlier. With a sodium borohydride or sodium hypochlorite sodium periodate treated cotton linter under the effect of initiator and acrylamide graft copolymerization, and found that the grafting rate of increased with the content of hydroxyl groups in the system.
Some people studied s208 2 + cause acrylamide and methyl cellulose grafting. The results showed that, with the increase of initiator concentration, the grafting rate increased, when the concentration of initiator was 3.7 x 10-4 mol/l. Acrylamide can be produced when cellulose and acrylamide are grafted together.
It is reported that adding a small amount of diethylene monomer to cross-linking and using the inert solvent as the reaction medium can achieve the goal of reducing the homopolymer.
The light of acrylamide and aldehydes causes grafting, and with the increase of the level of the aldehydes, the grafting rate increases. There are also reports of acrylamide and cellulose grafting under radiofrequency discharge or radiation exposure. In the process of cellulose and acrylamide copolymer, macromolecule polymerization mechanism for the use of cellulose on the formation of free radicals, the resulting free radical grafting monomers to form cellulose chain, graft polymerization.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Uses:
The product is identical to Ethancure 100 and Lonza DETDA 80, DETDA is very effective polyurethane elastomer chain extender; also be used as polyurethane and epoxy resin curing agent, epoxy resin of an antioxidant, industrial oils and lubricants . In addition, also as intermediates in organic synthesis.Especially for the RIM (reaction injection molding), is important in the field of spray polyurea chain extender species. Also can be used for casting polyurethane elastomer (CPU) and a curing agent, epoxy curing agent, epoxy resin of antioxidants, lubricants and industrial oils other antioxidants.
In the early stage of the graft crosslinking of cellulose graft chain chain growth caused by free radicals monomer, the free radical grafting chain is able to get free diffusion, liquid reaction showed low viscosity flow state; The reaction speed was accelerated, the reaction system was more viscous, and the branched chain increased. At the end of the reaction, the reaction system is converted from a viscous liquid to a semi-solid state, and the long chain of free radicals cannot be free to operate, also known as a single base buried state.
For viscose fiber production, not need higher molecular weight of PAM grafted onto cellulose chain, but rather through a certain chain length of PAM in polymer additives, such as protein and fiber to form a limited bound between nodes, PAM in the form of fiber reinforcement effect for protein.
Different initiator system for grafting reaction of cellulose with graft copolymerization of acrylamide party have a significant impact, it is generally believed grafting efficiency size order for kmn04 > ce4 + > fe2 + > h202 > tu/h202. But for crosslinking reaction, cellulose is has some neat degree of the linear macromolecules, with more hydroxyl, cellulose after the regenerated fibre can form more hydrogen bonds between molecules.
Soy protein macromolecules in alkaline in the dope show linear structure, amino acid composition with a variety of polar group, rely mainly on hydrogen bond between soybean protein macromolecules, all kinds of salt type and double sulphur keys link to each other, this is a chemical crosslinking.
But due to the complexity of macromolecular structure of soybean protein, the amino acids in the arrangement of different kinds of macromolecule branched chain is bigger, the neat degree is low, soy protein macromolecules separate fiber forming ability is very weak, if the viscose mother liquor were mixed with soy protein, soy protein and cellulose macromolecular tangles mutually, can form many physical junction.
Crosslinking treatment after the state of aggregation of soybean protein/viscose composite fiber structure for rectilinear macromolecular network structure, it ensures the protein in the fiber with high fixation rate. Cross-linking agent 1 protein a mixture of the mixture solution and a protein a mixture solution.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Because unit contains ene acyl polyacrylamide structure, easy to form hydrogen bonding, make it has good water solubility and high chemical activity, easily obtained by grafting and crosslinking branched chain or network of a variety of modified polyacrylamide series products, the polymer can be homopolymer, can also be a copolymer.
In the production of viscose fiber, polyacrylamide can be used as a crosslinking agent, used for crosslinking of two or more than two different polymers, increase fixation ratio of blending system, such as in order to reduce the spinning forming process of the flame retardant: the loss of high polymer material such as protein, chitin, typically in the preparation process of functional additives to join or use crosslinking agent.
The crosslinking of polyacrylamide and cellulose. The cellulose grafted acrylamide was reported earlier. With a sodium borohydride or sodium hypochlorite sodium periodate treated cotton linter under the effect of initiator and acrylamide graft copolymerization, and found that the grafting rate of increased with the content of hydroxyl groups in the system.
Some people studied s208 2 + cause acrylamide and methyl cellulose grafting. The results showed that, with the increase of initiator concentration, the grafting rate increased, when the concentration of initiator was 3.7 x 10-4 mol/l. Acrylamide can be produced when cellulose and acrylamide are grafted together.
It is reported that adding a small amount of diethylene monomer to cross-linking and using the inert solvent as the reaction medium can achieve the goal of reducing the homopolymer.
The light of acrylamide and aldehydes causes grafting, and with the increase of the level of the aldehydes, the grafting rate increases. There are also reports of acrylamide and cellulose grafting under radiofrequency discharge or radiation exposure. In the process of cellulose and acrylamide copolymer, macromolecule polymerization mechanism for the use of cellulose on the formation of free radicals, the resulting free radical grafting monomers to form cellulose chain, graft polymerization.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Uses:
The product is identical to Ethancure 100 and Lonza DETDA 80, DETDA is very effective polyurethane elastomer chain extender; also be used as polyurethane and epoxy resin curing agent, epoxy resin of an antioxidant, industrial oils and lubricants . In addition, also as intermediates in organic synthesis.Especially for the RIM (reaction injection molding), is important in the field of spray polyurea chain extender species. Also can be used for casting polyurethane elastomer (CPU) and a curing agent, epoxy curing agent, epoxy resin of antioxidants, lubricants and industrial oils other antioxidants.
In the early stage of the graft crosslinking of cellulose graft chain chain growth caused by free radicals monomer, the free radical grafting chain is able to get free diffusion, liquid reaction showed low viscosity flow state; The reaction speed was accelerated, the reaction system was more viscous, and the branched chain increased. At the end of the reaction, the reaction system is converted from a viscous liquid to a semi-solid state, and the long chain of free radicals cannot be free to operate, also known as a single base buried state.
For viscose fiber production, not need higher molecular weight of PAM grafted onto cellulose chain, but rather through a certain chain length of PAM in polymer additives, such as protein and fiber to form a limited bound between nodes, PAM in the form of fiber reinforcement effect for protein.
Different initiator system for grafting reaction of cellulose with graft copolymerization of acrylamide party have a significant impact, it is generally believed grafting efficiency size order for kmn04 > ce4 + > fe2 + > h202 > tu/h202. But for crosslinking reaction, cellulose is has some neat degree of the linear macromolecules, with more hydroxyl, cellulose after the regenerated fibre can form more hydrogen bonds between molecules.
Soy protein macromolecules in alkaline in the dope show linear structure, amino acid composition with a variety of polar group, rely mainly on hydrogen bond between soybean protein macromolecules, all kinds of salt type and double sulphur keys link to each other, this is a chemical crosslinking.
But due to the complexity of macromolecular structure of soybean protein, the amino acids in the arrangement of different kinds of macromolecule branched chain is bigger, the neat degree is low, soy protein macromolecules separate fiber forming ability is very weak, if the viscose mother liquor were mixed with soy protein, soy protein and cellulose macromolecular tangles mutually, can form many physical junction.
Crosslinking treatment after the state of aggregation of soybean protein/viscose composite fiber structure for rectilinear macromolecular network structure, it ensures the protein in the fiber with high fixation rate. Cross-linking agent 1 protein a mixture of the mixture solution and a protein a mixture solution.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Spanish
French
Italian
Portuguese
Japanese
Korean
Arabic
Russian