News Details
Paint direct printing crosslinking agent
2017-6-16 11:58:37
Paint direct printing crosslinking agent
Paint direct printing commonly used auxiliary agent has adhesive, crosslinking agent, thickening agent, emulsifying paste A, moisture-proofing agent, defoaming agent, dehumidifier, thickener etc. Its function and application method are described as follows:
(1) adhesions. The paint itself has no affinity for the fiber, and the glue must be used for fixing the fibers. Adhesives have an important effect on the quality of pigment printing.
Pigment printing besides shooting performance, the rubbing fastness is also a key index, except the size of the particles with paint itself depends largely on the performance of the adhesive glue film after its skin membrane of the friction coefficient is smaller, the rubbing fastness, the better.
Add organic silicon in pigment printing paste, therefore, smoothing agent can improve the rubbing fastness, appropriate if copolymerization with acrylate and silicone monomer, and made of silicone acrylic emulsion adhesive, its handle and rubbing fastness are improved substantially.
Pigment printing fabric on free formaldehyde is mainly the hydroxyl methyl acrylate adhesive of crosslinking monomer or hydroxyethyl functional groups, therefore, must choose excluding hydroxymethyl or hydroxyethyl class make duplicate system into the adhesive, such as epoxy group of duplicate system into the binder.
(2) crosslinking auxiliaries. The crosslinking agent for pigment printing may produce one or more bonds in the active position of the adhesive copolymer. It can improve the wearability, heat resistance and weather resistance of coating printing by improving the adhesion strength of the skin and the strength of the film itself. The crosslinking agent for pigment printing is divided into four types: urea-formaldehyde resin and crosslinking agent; An epoxide crosslinking agent; Ethylene imide crosslinking agent; Acrylamide cross-linking agent.
(3) thickening agent. A thickening agent is a substance that increases the viscosity of the liquid or gel. Polyacrylate thickening agent is widely used in pigment printing paste, which can be divided into crosslinking and non-crosslinking in chemical composition:
Type 1) crosslinking acrylate, methyl acrylate, their esters or acrylamide monomer copolymerization, add a small amount of double vinyl crosslinking monomer, such thickeners thickening ability is stronger, is not sensitive to pH value, pulp can generally be made transparent.
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.
(2) is non crosslinked acrylic acid, acrylate and styrene copolymer, such as thickener when adding water can quickly evenly spread out, under the condition of alkaline volume rapid expansion, into a transparent sticky liquid, so also known as the alkali soluble thickener, its no crosslinking linear molecules, widely used in pigment printing, color quantity is higher. The dosage of good synthetic thickening agent is 1.2% ~ 1.8%.
Although water-based coatings are superior to solvent coatings in terms of environmental humidity and water rate requirements, they are less applicable in other areas than solvent coatings.
Because the surface tension of the water is large, it is difficult to infiltrate the base material, it is easy to produce shrinkage, the water based coating is also high on the surface cleanliness requirement of the construction process and material surface.
Two types of coating dispersion medium the melting point of difference is very big, water is 0 ℃, and a lot of the relatively low melting point organic solvent, toluene as - 95 ℃, xylene as - 25 ℃ or so. Therefore, for the construction temperature, coating construction general requirements above 5 ℃, and solvent-based coating at 0 ℃ can construction.
Spray coating to the humidity of spray room also to have certain request, waterborne coatings in the environmental relative humidity above 85% when table dry slowly, water solvent to volatilize in the saturated humidity environment, when the humidity is too high (above 90%), the coating on the coating will flow down [4]. Therefore, there is a need for a good air circulation in the paint room to maintain the proper humidity.
Because the evaporation latent heat of water is large, it is 5 ~ 7 times that of general solvent, need to increase drying temperature or prolong drying time.
Although water-based paint a common solvent coating protective and decorative function, but in the case of high ornamental, unable to reach the fullness of high, need solvent coatings.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Paint direct printing commonly used auxiliary agent has adhesive, crosslinking agent, thickening agent, emulsifying paste A, moisture-proofing agent, defoaming agent, dehumidifier, thickener etc. Its function and application method are described as follows:
(1) adhesions. The paint itself has no affinity for the fiber, and the glue must be used for fixing the fibers. Adhesives have an important effect on the quality of pigment printing.
Pigment printing besides shooting performance, the rubbing fastness is also a key index, except the size of the particles with paint itself depends largely on the performance of the adhesive glue film after its skin membrane of the friction coefficient is smaller, the rubbing fastness, the better.
Add organic silicon in pigment printing paste, therefore, smoothing agent can improve the rubbing fastness, appropriate if copolymerization with acrylate and silicone monomer, and made of silicone acrylic emulsion adhesive, its handle and rubbing fastness are improved substantially.
Pigment printing fabric on free formaldehyde is mainly the hydroxyl methyl acrylate adhesive of crosslinking monomer or hydroxyethyl functional groups, therefore, must choose excluding hydroxymethyl or hydroxyethyl class make duplicate system into the adhesive, such as epoxy group of duplicate system into the binder.
(2) crosslinking auxiliaries. The crosslinking agent for pigment printing may produce one or more bonds in the active position of the adhesive copolymer. It can improve the wearability, heat resistance and weather resistance of coating printing by improving the adhesion strength of the skin and the strength of the film itself. The crosslinking agent for pigment printing is divided into four types: urea-formaldehyde resin and crosslinking agent; An epoxide crosslinking agent; Ethylene imide crosslinking agent; Acrylamide cross-linking agent.
(3) thickening agent. A thickening agent is a substance that increases the viscosity of the liquid or gel. Polyacrylate thickening agent is widely used in pigment printing paste, which can be divided into crosslinking and non-crosslinking in chemical composition:
Type 1) crosslinking acrylate, methyl acrylate, their esters or acrylamide monomer copolymerization, add a small amount of double vinyl crosslinking monomer, such thickeners thickening ability is stronger, is not sensitive to pH value, pulp can generally be made transparent.
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.
(2) is non crosslinked acrylic acid, acrylate and styrene copolymer, such as thickener when adding water can quickly evenly spread out, under the condition of alkaline volume rapid expansion, into a transparent sticky liquid, so also known as the alkali soluble thickener, its no crosslinking linear molecules, widely used in pigment printing, color quantity is higher. The dosage of good synthetic thickening agent is 1.2% ~ 1.8%.
Although water-based coatings are superior to solvent coatings in terms of environmental humidity and water rate requirements, they are less applicable in other areas than solvent coatings.
Because the surface tension of the water is large, it is difficult to infiltrate the base material, it is easy to produce shrinkage, the water based coating is also high on the surface cleanliness requirement of the construction process and material surface.
Two types of coating dispersion medium the melting point of difference is very big, water is 0 ℃, and a lot of the relatively low melting point organic solvent, toluene as - 95 ℃, xylene as - 25 ℃ or so. Therefore, for the construction temperature, coating construction general requirements above 5 ℃, and solvent-based coating at 0 ℃ can construction.
Spray coating to the humidity of spray room also to have certain request, waterborne coatings in the environmental relative humidity above 85% when table dry slowly, water solvent to volatilize in the saturated humidity environment, when the humidity is too high (above 90%), the coating on the coating will flow down [4]. Therefore, there is a need for a good air circulation in the paint room to maintain the proper humidity.
Because the evaporation latent heat of water is large, it is 5 ~ 7 times that of general solvent, need to increase drying temperature or prolong drying time.
Although water-based paint a common solvent coating protective and decorative function, but in the case of high ornamental, unable to reach the fullness of high, need solvent coatings.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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