News Details
Self-cleaning water-based paint crosslinking agent
2017-6-11 23:51:51
Self-cleaning water-based paint crosslinking agent
Waterborne polyurethane with traditional solvent polyurethane with high intensity, as well as good adhesion, abrasion resistance, but the introduction of the hydrophilic chain segment coating has high surface energy, water resistant performance of coating decreased significantly.
The researchers made a series of efforts to address the problem of water resistance. Yao Ming such as alkane hydroxyl silicone oil was synthesized using alkane hydroxyl silicone oil modified waterborne polyurethane emulsion, the dosage of the organic silicon 2%, the coating of water contact Angle increased from 90 ° to 113 °.
After the modification of hydroxy silicone oil, the rich set of organosilicate was applied to the coating surface, thereby increasing the hydrophobic properties of the coating. Bai, such as use of pentaerythritol second acrylate (PEDA) chain extender, the organic silicone modified polyurethane chain (PDMS), the double bond is introduced in after UV curing waterborne polyurethane material hydrophobicity, stability and mechanical properties are improved obviously.
Dong Qingqing using poly (propylene oxide such as alcohol and polyether polysiloxane glycol as mixed soft segments and isophorone diisocyanate as hard segment organic silicone modified waterborne polyurethane was synthesized by emulsion (Si - WPU). Study found, polyether polysiloxane glycol dosage was 10%, the modified polyurethane emulsion coating on the surface of the water contact Angle is 104.5 °, showing good hydrophobic property.
Verma, methyl in liujia oxygen radicals such as melamine (HMMM) as crosslinking agent, the methyl benzene sulfonic acid (p - the TSA) as catalyst, using polyester base polydimethylsiloxane (PMDS) modified waterborne, thermosetting hydrophobic coating anticorrosion of hydrophobic coating was prepared by copper.
The results show that the modified PDMS coating on the surface of the water contact Angle from the original 56 ° to 100 °, hydrophobic performance.
Verma, etc. Also use of hydroxyl-terminated polydimethylsiloxane (OH - PDMS) made from rough surface with low surface energy, developed a metal substrate of hydrophobic self-cleaning waterborne polyester resin coatings. Through the static contact Angle and the fouling resistance test of PDMS were studied the influence of hydrophobic and self-cleaning, experimental observation to the contact Angle from 70 ° to 104, demonstrated good self-cleaning properties, prevents dirt particles from adhesion on the coating surface.
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 addition, when the temperature from 30 ℃ to 90 ℃, the contact Angle is kept constant, the coating has good thermal stability. Wu, such as main chain by polymerization in aqueous polyurethane on the introduction of polydimethylsiloxane (PDMS), nonpolar PDMS chain segments and high polarity of polyurethane chain segment in the solubility parameter differences lead to PDMS in air - polymer interface enrichment, separation degree increase, form the rough structure.
So that the combination of PDMS concentration and coarse structure make coating surface contact Angle is as high as 156.5 °, the formation of super hydrophobic surface, and super hydrophobic coating in the most visible wavelength optical transmittance about 78% ~ 87%. Ultra-hydrophobic and permeable properties will further expand the application of water-based polyurethane, especially environmental protection and industrial applications.
Water-based epoxy resin has a significant reduction in water resistance due to the presence of the hydrophilic segment. The research shows that the epoxy resin crosslinking system with polysiloxane modification can effectively improve hydrophobic, toughness and heat resistance.
Ding with end amino polysiloxane modified epoxy resin such as some, as the end, an increase in the amount of amino polysiloxane, siloxane segment, migration to coating surface coating water contact Angle increased significantly.
Studies show that the end of amino modified polysiloxane, some viscosity increase of epoxy resin, particle size decreases, and some basic unchanged, the surface tension of the but with siloxane segment on the surface of the coating, enrichment, coating the surface tension of the fallen.
With the improvement of the performance of water-based coatings in the application area, the self-cleaning coating is becoming more and more concerned. Nanoparticles due to its special properties used in water-based paint, with excellent mechanical properties of nanometer modification can not only be prepared waterborne coatings, and at the same time can also be prepared antibacterial, self-cleaning functional coating, etc.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Waterborne polyurethane with traditional solvent polyurethane with high intensity, as well as good adhesion, abrasion resistance, but the introduction of the hydrophilic chain segment coating has high surface energy, water resistant performance of coating decreased significantly.
The researchers made a series of efforts to address the problem of water resistance. Yao Ming such as alkane hydroxyl silicone oil was synthesized using alkane hydroxyl silicone oil modified waterborne polyurethane emulsion, the dosage of the organic silicon 2%, the coating of water contact Angle increased from 90 ° to 113 °.
After the modification of hydroxy silicone oil, the rich set of organosilicate was applied to the coating surface, thereby increasing the hydrophobic properties of the coating. Bai, such as use of pentaerythritol second acrylate (PEDA) chain extender, the organic silicone modified polyurethane chain (PDMS), the double bond is introduced in after UV curing waterborne polyurethane material hydrophobicity, stability and mechanical properties are improved obviously.
Dong Qingqing using poly (propylene oxide such as alcohol and polyether polysiloxane glycol as mixed soft segments and isophorone diisocyanate as hard segment organic silicone modified waterborne polyurethane was synthesized by emulsion (Si - WPU). Study found, polyether polysiloxane glycol dosage was 10%, the modified polyurethane emulsion coating on the surface of the water contact Angle is 104.5 °, showing good hydrophobic property.
Verma, methyl in liujia oxygen radicals such as melamine (HMMM) as crosslinking agent, the methyl benzene sulfonic acid (p - the TSA) as catalyst, using polyester base polydimethylsiloxane (PMDS) modified waterborne, thermosetting hydrophobic coating anticorrosion of hydrophobic coating was prepared by copper.
The results show that the modified PDMS coating on the surface of the water contact Angle from the original 56 ° to 100 °, hydrophobic performance.
Verma, etc. Also use of hydroxyl-terminated polydimethylsiloxane (OH - PDMS) made from rough surface with low surface energy, developed a metal substrate of hydrophobic self-cleaning waterborne polyester resin coatings. Through the static contact Angle and the fouling resistance test of PDMS were studied the influence of hydrophobic and self-cleaning, experimental observation to the contact Angle from 70 ° to 104, demonstrated good self-cleaning properties, prevents dirt particles from adhesion on the coating surface.
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 addition, when the temperature from 30 ℃ to 90 ℃, the contact Angle is kept constant, the coating has good thermal stability. Wu, such as main chain by polymerization in aqueous polyurethane on the introduction of polydimethylsiloxane (PDMS), nonpolar PDMS chain segments and high polarity of polyurethane chain segment in the solubility parameter differences lead to PDMS in air - polymer interface enrichment, separation degree increase, form the rough structure.
So that the combination of PDMS concentration and coarse structure make coating surface contact Angle is as high as 156.5 °, the formation of super hydrophobic surface, and super hydrophobic coating in the most visible wavelength optical transmittance about 78% ~ 87%. Ultra-hydrophobic and permeable properties will further expand the application of water-based polyurethane, especially environmental protection and industrial applications.
Water-based epoxy resin has a significant reduction in water resistance due to the presence of the hydrophilic segment. The research shows that the epoxy resin crosslinking system with polysiloxane modification can effectively improve hydrophobic, toughness and heat resistance.
Ding with end amino polysiloxane modified epoxy resin such as some, as the end, an increase in the amount of amino polysiloxane, siloxane segment, migration to coating surface coating water contact Angle increased significantly.
Studies show that the end of amino modified polysiloxane, some viscosity increase of epoxy resin, particle size decreases, and some basic unchanged, the surface tension of the but with siloxane segment on the surface of the coating, enrichment, coating the surface tension of the fallen.
With the improvement of the performance of water-based coatings in the application area, the self-cleaning coating is becoming more and more concerned. Nanoparticles due to its special properties used in water-based paint, with excellent mechanical properties of nanometer modification can not only be prepared waterborne coatings, and at the same time can also be prepared antibacterial, self-cleaning functional coating, etc.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Spanish
French
Italian
Portuguese
Japanese
Korean
Arabic
Russian