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Synthesis of epoxy resin modified waterborne polyurethane
- Categories:news
- Author:
- Origin:
- Time of issue:2018-09-11 17:36
(Summary description)Waterborne polyurethane is a kind of polymer material with good physical properties, mechanical properties, weather resistance, environmental friendliness and other advantages. However, the performance of water-based polyurethane is still inferior to that of oil-based polyurethane in some aspects due to the limitation of synthetic methods. In order to improve the comprehensive properties of water-based polyurethane, more and more scientific researchers are devoted to the modification of water-based polyurethane resin. The current modification methods mainly include: 1. Improvement of monomer and synthesis process; 2. Additives; 3. Cross-linking; 4. Compounding. waterborne polyurethane The optimized compounding of waterborne polyurethane mainly includes epoxy resin modification, polysiloxane modification and acrylic compound modification. The following will briefly introduce epoxy resin modified waterborne polyurethane. Epoxy resin itself has the characteristics of high mechanical strength, good adhesion, good chemical stability and low cost, and has long been widely used in the industry. However, it also has some disadvantages, such as poor toughness, brittleness after curing, and low impact resistance, which limit its application field. Epoxy modified polyurethane with excellent performance can be obtained by combining polyurethane with high elasticity and high adhesive force with epoxy resin. There are three main methods for epoxy resin modified waterborne polyurethane: 1. Mechanical blending, that is, mixing epoxy resin and water-based polyurethane in a certain proportion; 2. Graft copolymerization of epoxy resin and polyurethane: After graft copolymerization of epoxy resin and polyurethane prepolymer, water emulsification is performed to obtain epoxy resin modified waterborne polyurethane; 3. Ring-opening of epoxy resin into polyurethane: the epoxy resin after ring-opening is introduced into the polyurethane prepolymer as a polyol component.
Synthesis of epoxy resin modified waterborne polyurethane
(Summary description)Waterborne polyurethane is a kind of polymer material with good physical properties, mechanical properties, weather resistance, environmental friendliness and other advantages. However, the performance of water-based polyurethane is still inferior to that of oil-based polyurethane in some aspects due to the limitation of synthetic methods. In order to improve the comprehensive properties of water-based polyurethane, more and more scientific researchers are devoted to the modification of water-based polyurethane resin. The current modification methods mainly include:
1. Improvement of monomer and synthesis process; 2. Additives; 3. Cross-linking; 4. Compounding.
waterborne polyurethane
The optimized compounding of waterborne polyurethane mainly includes epoxy resin modification, polysiloxane modification and acrylic compound modification. The following will briefly introduce epoxy resin modified waterborne polyurethane.
Epoxy resin itself has the characteristics of high mechanical strength, good adhesion, good chemical stability and low cost, and has long been widely used in the industry. However, it also has some disadvantages, such as poor toughness, brittleness after curing, and low impact resistance, which limit its application field. Epoxy modified polyurethane with excellent performance can be obtained by combining polyurethane with high elasticity and high adhesive force with epoxy resin.
There are three main methods for epoxy resin modified waterborne polyurethane:
1. Mechanical blending, that is, mixing epoxy resin and water-based polyurethane in a certain proportion;
2. Graft copolymerization of epoxy resin and polyurethane: After graft copolymerization of epoxy resin and polyurethane prepolymer, water emulsification is performed to obtain epoxy resin modified waterborne polyurethane;
3. Ring-opening of epoxy resin into polyurethane: the epoxy resin after ring-opening is introduced into the polyurethane prepolymer as a polyol component.
- Categories:news
- Author:
- Origin:
- Time of issue:2018-09-11 17:36
Information
Waterborne polyurethane is a kind of polymer material with good physical properties, mechanical properties, weather resistance, environmental friendliness and other advantages. However, the performance of water-based polyurethane is still inferior to that of oil-based polyurethane in some aspects due to the limitation of synthetic methods. In order to improve the comprehensive properties of water-based polyurethane, more and more scientific researchers are devoted to the modification of water-based polyurethane resin. The current modification methods mainly include:
1. Improvement of monomer and synthesis process; 2. Additives; 3. Cross-linking; 4. Compounding.
waterborne polyurethane
The optimized compounding of waterborne polyurethane mainly includes epoxy resin modification, polysiloxane modification and acrylic compound modification. The following will briefly introduce epoxy resin modified waterborne polyurethane.
Epoxy resin itself has the characteristics of high mechanical strength, good adhesion, good chemical stability and low cost, and has long been widely used in the industry. However, it also has some disadvantages, such as poor toughness, brittleness after curing, and low impact resistance, which limit its application field. Epoxy modified polyurethane with excellent performance can be obtained by combining polyurethane with high elasticity and high adhesive force with epoxy resin.
There are three main methods for epoxy resin modified waterborne polyurethane:
1. Mechanical blending, that is, mixing epoxy resin and water-based polyurethane in a certain proportion;
2. Graft copolymerization of epoxy resin and polyurethane: After graft copolymerization of epoxy resin and polyurethane prepolymer, water emulsification is performed to obtain epoxy resin modified waterborne polyurethane;
3. Ring-opening of epoxy resin into polyurethane: the epoxy resin after ring-opening is introduced into the polyurethane prepolymer as a polyol component.
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