News Details
Latex paint paint crosslinking agent
2017-5-25 11:48:01
Latex paint paint crosslinking agent
In the case of emulsioni paint performance, should be able to be resistant to contamination, washing and brushing, aging, water resistance, solvent and water vapor through sex. In emulsion synthesis, currently the world's most advanced synthetic technology has self - crosslinking, core-shell polymerization and soap-free polymerization technology, and self - crosslinking can be compatible with core-shell technology, also can be compatible with the soap-free polymerization technology.
Crosslinking and non-crosslinking coatings are two to three times different in performance. On the market at present most of the emulsion is thermoplastic, its structure is linear structure, therefore, the fouling resistance, aging resistance, water resistance, wash resistance, solvent resistance, etc, there are insufficient, far cannot satisfy the use requirement.
At room temperature, the insufficiency of thermoplastic emulsion was solved. When the emulsion polymerization is introduced, the functional group that can be appropriately crosslinked is introduced to produce the crosslinking in the process of forming, forming a three-dimensional network structure.
Diacetone acrylamide (DAAM) is a reactive, environment-friendly monomer, white crystal or light yellow. The acrylamide double bond on the molecule can be used for free radical copolymerization and copolymerization with many acrylates. Hydrazine can react with a ketocarbonyl in the molecule of diacetone acrylamide. But hydrazine is so toxic that it has to be made of dihydrazide, which can also be made into other acylhydrazine. In terms of the overall cost, it is more economical to use dihydrate.
In emulsion polymerization with DAAM, introduce ketone carbonyl, ketone carbonyl double bond in emulsion in water in a closed state, suitable for long-term preservation of emulsion, and ketone carbonyl when coating and ADH form double hydrazone, dehydration crosslinking reaction generated water, moisture volatilizes continue crosslinking, finished until the water loss. The crosslinking must be performed under weak or weak acid conditions. Since the crosslinking reaction time and temperature and humidity, generally 25 ℃, 7 d crosslinking.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine packing： net weight 200KG/ galvanized iron drum (a small cabinet pallet loaded 16 tons), 1000KG/IB barrels (a small cabinet loaded 18 tons or 23 tons of ISOTANK).
The formula of self-crosslinking lotion. According to the above formula obtained emulsion Tg (glass transition temperature) to 0 ℃, solid content is (48 + 2) %. Also can adjust the amount of DAAM, Tg and ratio of hard and soft monomer to set, the general set of Tg - 10 ~ 30 ℃. In the process of making emulsioni, the Tg of emulsion should be considered, the higher the Tg, the higher the hardness, the better the stain resistance. The lower the Tg, the lower the hardness, the worse the stain resistance. Since crosslinked coating film at room temperature, Tg can back up 15 ℃ or so commonly, so the emulsion Tg don't design too high, high Tg emulsion in the film to be a lot of film-forming additives.
Synthesis process: adding emulsifier to emulsify beforehand in the kettle, and add a variety of pre emulsified monomers, the reaction kettle temperature to 78 ℃, to join the ammonium persulfate, began to add pre emulsion, add finished within 3 h, 2 h 80 ℃ heat preservation, cooling, cooling, add ammonia neutralization, the pH value to 7 ~ 9, filtering, discharging. The emulsion is nucleated under the electron microscope, 50 ~ 70 mu m.
Paint process: the deionized water into the paint kettle, to join the additives, fillers high-speed dispersion 1 h, sanding 2 times, to join the preparation of emulsion, flow ping agent, ammonia, alcohol ester - 12, thickener, low-speed mixing 1.5 h, stop stirring, filtration, discharge, a quick finished product, obtained the emulsioni paint of storage at room temperature 2 a no obvious stratification.
1 - the paint film is soaked in water for 1 month (720 h) without change; 2 - the three gorges paint of li huazhong's engineers was able to wash more than 100,000 times. 3 - this paint is made from the self-crosslinked phenylene acrylic emulsion, the domestic gold red stone type titanium powder, the performance will be better if pure propylene emulsion or silicone emulsion.
By the performance test result: the preparation of the performance of self - crosslinking latex paint better than that of non self crosslinking of waterborne fluorocarbon lacquer, its performance is excellent, exterior wall due to the density of 3 d mesh structure, waterproof, metope by natural water flushing, clean for years.
This paint can mark handwriting, round pearl, ink, oil pollution, such as mosquitoes, flies blood excrement, the metope of general artificial soiled, can use wet towel touchs detergent scrub clean gently, a trace. You can also use stainless steel wire scrubbing. Because of its base material for any clean has excellent adhesion, adapt the metope outside (tile), steel, plastic, Mosaic decoration, really is brush is live on environmental protection, no smell.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
In the case of emulsioni paint performance, should be able to be resistant to contamination, washing and brushing, aging, water resistance, solvent and water vapor through sex. In emulsion synthesis, currently the world's most advanced synthetic technology has self - crosslinking, core-shell polymerization and soap-free polymerization technology, and self - crosslinking can be compatible with core-shell technology, also can be compatible with the soap-free polymerization technology.
Crosslinking and non-crosslinking coatings are two to three times different in performance. On the market at present most of the emulsion is thermoplastic, its structure is linear structure, therefore, the fouling resistance, aging resistance, water resistance, wash resistance, solvent resistance, etc, there are insufficient, far cannot satisfy the use requirement.
At room temperature, the insufficiency of thermoplastic emulsion was solved. When the emulsion polymerization is introduced, the functional group that can be appropriately crosslinked is introduced to produce the crosslinking in the process of forming, forming a three-dimensional network structure.
Diacetone acrylamide (DAAM) is a reactive, environment-friendly monomer, white crystal or light yellow. The acrylamide double bond on the molecule can be used for free radical copolymerization and copolymerization with many acrylates. Hydrazine can react with a ketocarbonyl in the molecule of diacetone acrylamide. But hydrazine is so toxic that it has to be made of dihydrazide, which can also be made into other acylhydrazine. In terms of the overall cost, it is more economical to use dihydrate.
In emulsion polymerization with DAAM, introduce ketone carbonyl, ketone carbonyl double bond in emulsion in water in a closed state, suitable for long-term preservation of emulsion, and ketone carbonyl when coating and ADH form double hydrazone, dehydration crosslinking reaction generated water, moisture volatilizes continue crosslinking, finished until the water loss. The crosslinking must be performed under weak or weak acid conditions. Since the crosslinking reaction time and temperature and humidity, generally 25 ℃, 7 d crosslinking.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine packing： net weight 200KG/ galvanized iron drum (a small cabinet pallet loaded 16 tons), 1000KG/IB barrels (a small cabinet loaded 18 tons or 23 tons of ISOTANK).
The formula of self-crosslinking lotion. According to the above formula obtained emulsion Tg (glass transition temperature) to 0 ℃, solid content is (48 + 2) %. Also can adjust the amount of DAAM, Tg and ratio of hard and soft monomer to set, the general set of Tg - 10 ~ 30 ℃. In the process of making emulsioni, the Tg of emulsion should be considered, the higher the Tg, the higher the hardness, the better the stain resistance. The lower the Tg, the lower the hardness, the worse the stain resistance. Since crosslinked coating film at room temperature, Tg can back up 15 ℃ or so commonly, so the emulsion Tg don't design too high, high Tg emulsion in the film to be a lot of film-forming additives.
Synthesis process: adding emulsifier to emulsify beforehand in the kettle, and add a variety of pre emulsified monomers, the reaction kettle temperature to 78 ℃, to join the ammonium persulfate, began to add pre emulsion, add finished within 3 h, 2 h 80 ℃ heat preservation, cooling, cooling, add ammonia neutralization, the pH value to 7 ~ 9, filtering, discharging. The emulsion is nucleated under the electron microscope, 50 ~ 70 mu m.
Paint process: the deionized water into the paint kettle, to join the additives, fillers high-speed dispersion 1 h, sanding 2 times, to join the preparation of emulsion, flow ping agent, ammonia, alcohol ester - 12, thickener, low-speed mixing 1.5 h, stop stirring, filtration, discharge, a quick finished product, obtained the emulsioni paint of storage at room temperature 2 a no obvious stratification.
1 - the paint film is soaked in water for 1 month (720 h) without change; 2 - the three gorges paint of li huazhong's engineers was able to wash more than 100,000 times. 3 - this paint is made from the self-crosslinked phenylene acrylic emulsion, the domestic gold red stone type titanium powder, the performance will be better if pure propylene emulsion or silicone emulsion.
By the performance test result: the preparation of the performance of self - crosslinking latex paint better than that of non self crosslinking of waterborne fluorocarbon lacquer, its performance is excellent, exterior wall due to the density of 3 d mesh structure, waterproof, metope by natural water flushing, clean for years.
This paint can mark handwriting, round pearl, ink, oil pollution, such as mosquitoes, flies blood excrement, the metope of general artificial soiled, can use wet towel touchs detergent scrub clean gently, a trace. You can also use stainless steel wire scrubbing. Because of its base material for any clean has excellent adhesion, adapt the metope outside (tile), steel, plastic, Mosaic decoration, really is brush is live on environmental protection, no smell.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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