News Details
Water-based antirust paint crosslinking agent
2017-5-26 18:33:02
Water-based antirust paint crosslinking agent
In recent years, many scholars by seed emulsion polymerization technology, with acrylic monomers as the main body, GMA and MAA (methacrylic acid) as crosslinking monomer, the synthesis of crosslinking emulsion with core-shell structure, make the crosslinking functional groups distributed in different layers core-shell structure. As the water evaporates in the process of film forming, the interaction between epoxy and carboxyl groups in different layers occurs.
Hai-yan jiang GMA was synthesized in nuclear layer, such as methyl acrylic acid distribution in the shell of the crosslinking styrene acrylic emulsion with core-shell structure, GMA and methylacrylic acid dosage for 3% of the total layer monomer. The water-based rust resistant paint prepared by this emulsion has excellent rust resistance compared to normal phenyl acrylic emulsion.
Liu looked at the effect of the amount of the crosslinking monomer on the coating properties, and concluded that the optimum acrylic dosage was 2% ~ 4% of the monomer. When GMA USES more than 4 percent of the amount, it causes the system to become too sticky and even gel, so the GMA should be strictly controlled.
The room-temperature hydrolysis of siloxane is condensed from the crosslinking. Water will be introduced to the organic siloxane polymer molecular chain of paint, coating solidifying cross-linking between through siloxane was realized by hydrolysis and polycondensation reaction at room temperature. Siloxane groups in alcohol can under the condition of normal temperature hydrolysis into silicon, silicon or silicon alcohol between alcohol and silanol and the molecular chain of the polymer reactive condensation into Si - O - Si crosslinking structure.
Function of siloxane monomer containing a double bond can be polymerization, such as oxygen propyl methyl acryloyl silane (MATS), three oxygen radicals by free radical copolymerization reaction is introduced into the polymer molecular chain on the side base of polymer emulsion and endowed with self - crosslinking performance.
Xiao-li zhu, using three kinds of containing unsaturated double bond siloxane: vinyl three (beta - methoxy) ethoxy silane (A172), vinyl triethoxy silane (VTES) and gamma - propyl methyl acryloyl oxygen top oxygen radicals silane (A174) as functional monomer, prepared by semi-continuous emulsion polymerization method for self - crosslinking acrylic emulsion, the research results show that the crosslinking density of the emulsion coating, mechanical properties and water resistance with the function of siloxane monomer and VTES A174 increases the amount of time.
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).
Use contain amino, hydroxyl or siloxane epoxy group and other functional groups with the reactive polymer molecular chain reaction, will be introduced to the siloxane resin in room temperature can also be prepared crosslinked resin.
BaoLiang etc will be 3 - amino propyl triethoxy silane (KH550) was introduced to the aqueous polyurethane, which was prepared to self - crosslinking aqueous polyurethane, experimental analysis shows that due to the hydrolytic condensation of siloxane crosslinking, polyurethane properties such as hardness and water resistance was improved. Subramani etc will be organic siloxane 3 - ammonia containing amino siloxane propyl three oxygen radicals (APTMS) is introduced into the aqueous polyurethane, chain extender, alkoxy seal was the water-based polyurethane emulsion.
The hardness of the emulsion coating was improved significantly due to the condensation of the hydrolysis in the system. Wang, such as preparation of waterborne polyurethane modified by APTMS self crosslinking emulsion, and the specific performance of siloxane content on the emulsion coating are studied, the results show that with the increase of the content of APTMS coating bibulous rate and absorption rate of ethanol is reduced, the tensile strength of coating film.
Ludewing etc developed to room temperature curing alkoxy polyurethane containing silicon, product has the advantages of low viscosity, high elasticity and high adhesion, the adhesive can be used for construction, automotive industry or the preparation of coatings.
Kan, such as preparation of the one-component room temperature based on silicon alkoxy crosslinked poly (propylene oxide emulsion and polyurethane emulsion, the emulsion with good stability, can be stable storage at room temperature above 180 d, also can store more than 50 d under 50 ℃, and it has excellent freeze-thaw stability and centrifugal stability.
Currently, siloxane with double functional groups are used to prepare water-based one-component room temperature since the crosslinking resin, especially for polydimethylsiloxane with double functional group modified waterborne polyurethane research more.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
In recent years, many scholars by seed emulsion polymerization technology, with acrylic monomers as the main body, GMA and MAA (methacrylic acid) as crosslinking monomer, the synthesis of crosslinking emulsion with core-shell structure, make the crosslinking functional groups distributed in different layers core-shell structure. As the water evaporates in the process of film forming, the interaction between epoxy and carboxyl groups in different layers occurs.
Hai-yan jiang GMA was synthesized in nuclear layer, such as methyl acrylic acid distribution in the shell of the crosslinking styrene acrylic emulsion with core-shell structure, GMA and methylacrylic acid dosage for 3% of the total layer monomer. The water-based rust resistant paint prepared by this emulsion has excellent rust resistance compared to normal phenyl acrylic emulsion.
Liu looked at the effect of the amount of the crosslinking monomer on the coating properties, and concluded that the optimum acrylic dosage was 2% ~ 4% of the monomer. When GMA USES more than 4 percent of the amount, it causes the system to become too sticky and even gel, so the GMA should be strictly controlled.
The room-temperature hydrolysis of siloxane is condensed from the crosslinking. Water will be introduced to the organic siloxane polymer molecular chain of paint, coating solidifying cross-linking between through siloxane was realized by hydrolysis and polycondensation reaction at room temperature. Siloxane groups in alcohol can under the condition of normal temperature hydrolysis into silicon, silicon or silicon alcohol between alcohol and silanol and the molecular chain of the polymer reactive condensation into Si - O - Si crosslinking structure.
Function of siloxane monomer containing a double bond can be polymerization, such as oxygen propyl methyl acryloyl silane (MATS), three oxygen radicals by free radical copolymerization reaction is introduced into the polymer molecular chain on the side base of polymer emulsion and endowed with self - crosslinking performance.
Xiao-li zhu, using three kinds of containing unsaturated double bond siloxane: vinyl three (beta - methoxy) ethoxy silane (A172), vinyl triethoxy silane (VTES) and gamma - propyl methyl acryloyl oxygen top oxygen radicals silane (A174) as functional monomer, prepared by semi-continuous emulsion polymerization method for self - crosslinking acrylic emulsion, the research results show that the crosslinking density of the emulsion coating, mechanical properties and water resistance with the function of siloxane monomer and VTES A174 increases the amount of time.
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).
Use contain amino, hydroxyl or siloxane epoxy group and other functional groups with the reactive polymer molecular chain reaction, will be introduced to the siloxane resin in room temperature can also be prepared crosslinked resin.
BaoLiang etc will be 3 - amino propyl triethoxy silane (KH550) was introduced to the aqueous polyurethane, which was prepared to self - crosslinking aqueous polyurethane, experimental analysis shows that due to the hydrolytic condensation of siloxane crosslinking, polyurethane properties such as hardness and water resistance was improved. Subramani etc will be organic siloxane 3 - ammonia containing amino siloxane propyl three oxygen radicals (APTMS) is introduced into the aqueous polyurethane, chain extender, alkoxy seal was the water-based polyurethane emulsion.
The hardness of the emulsion coating was improved significantly due to the condensation of the hydrolysis in the system. Wang, such as preparation of waterborne polyurethane modified by APTMS self crosslinking emulsion, and the specific performance of siloxane content on the emulsion coating are studied, the results show that with the increase of the content of APTMS coating bibulous rate and absorption rate of ethanol is reduced, the tensile strength of coating film.
Ludewing etc developed to room temperature curing alkoxy polyurethane containing silicon, product has the advantages of low viscosity, high elasticity and high adhesion, the adhesive can be used for construction, automotive industry or the preparation of coatings.
Kan, such as preparation of the one-component room temperature based on silicon alkoxy crosslinked poly (propylene oxide emulsion and polyurethane emulsion, the emulsion with good stability, can be stable storage at room temperature above 180 d, also can store more than 50 d under 50 ℃, and it has excellent freeze-thaw stability and centrifugal stability.
Currently, siloxane with double functional groups are used to prepare water-based one-component room temperature since the crosslinking resin, especially for polydimethylsiloxane with double functional group modified waterborne polyurethane research more.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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