Product characteristics of hydroxypropyl methylcellulose for construction
Soluble in water and some organic solvents. Can be dissolved in cold water. Its maximum concentration only depends on the viscosity. The solubility changes with the viscosity. The lower the viscosity, the greater the solubility.
Salt-resistant building-specific hydroxypropyl methylcellulose is a non-ionic cellulose ether, and is not a polyelectrolyte, so it is relatively stable in aqueous solution in the presence of metal salts or organic electrolytes, but excessive addition of electrolytes can cause gelation and precipitation.
Surface activity Because the aqueous solution has surface activity function, it can be used as colloidal protective agent, emulsifier and dispersant. When the aqueous solution of hydroxypropyl methylcellulose for construction is heated to a certain temperature, it becomes opaque, gels, and precipitates, but when it is continuously cooled, it returns to the original solution state, and this gel and precipitation occur The temperature mainly depends on their lubricants, suspending agents, protective colloids, emulsifiers, etc.
Mildew resistance It has relatively good anti-mildew ability and good viscosity stability during long-term storage.
PH stability, the viscosity of hydroxypropyl methylcellulose aqueous solution for construction is hardly affected by acid or alkali, and the pH value is relatively stable in the range of 3.0 to 11.0.
Shape retention Since the highly concentrated aqueous solution of hydroxypropyl methylcellulose for construction has special viscoelastic properties compared with aqueous solutions of other polymers, its addition can improve the ability to maintain the shape of extruded ceramic products.
Water retention Hydroxypropyl methylcellulose for construction is a kind of high-efficiency water retention agent due to its high hydrophilicity and high viscosity of its aqueous solution. Other properties Thickener, film-forming agent, binder, lubricant, suspending agent, protective colloid, emulsifier, etc.
Advantages of hydroxypropyl methylcellulose for construction in the field of construction
performance:
1. It is easy to mix with dry powder formula.
2. It has the characteristics of cold water dispersion.
3. Suspend solid particles effectively, making the mixture smoother and more uniform.
mix:
1. The dry blend formula containing hydroxypropyl methylcellulose for construction can be easily mixed with water.
2. Quickly obtain the desired consistency.
3. The dissolution of cellulose ether is faster and without lumps.
construction:
1. Improve lubricity and plasticity to enhance machinability and make product construction more convenient and faster.
2. Enhance the water retention characteristics and prolong the working time.
3. Helps prevent the vertical flow of mortar, mortar and tiles. Extend the cooling time and improve work efficiency.
4. Improve the bonding strength of tile adhesives.
5. Enhance the anti-crack shrinkage and anti-cracking strength of mortar and board joint filler.
6. Improve the air content in the mortar, greatly reducing the possibility of cracks.
7. It can enhance the vertical flow resistance of tile adhesives.
8. Use with Kima Chemical’s starch ether, the effect is better!
Application of hydroxypropyl methylcellulose for construction in construction field
Water-resistant putty for interior and exterior walls:
1. Excellent water retention, which can prolong the construction time and improve work efficiency. High lubricity makes construction easier and smoother. Provides a fine and even texture for smoother putty surfaces.
2. High viscosity, generally 100,000 to 150,000 sticks, makes the putty more adhesive to the wall.
3. Improve shrinkage resistance and crack resistance, improve surface quality.
Reference dosage: 0.3~0.4% for interior walls; 0.4~0.5% for exterior walls;
External wall insulation mortar
1. Enhance the adhesion with the wall surface, and enhance the water retention, so that the strength of the mortar can be improved.
2. Improve the construction performance by improving the lubricity and plasticity. It can be used together with Shenglu brand starch ether to strengthen the mortar, which is easier to construct, saves time and improves cost-effectiveness.
3. Control the infiltration of air, thereby eliminating the micro-cracks of the coating and forming an ideal smooth surface.
Reference dosage: general mortar 0.1~0.3%; thermal insulation mortar 0.3~0.6%; interface agent: 0.3~0.6%;
Gypsum plaster and plaster products
1. Improve the uniformity, make the plastering paste easier to spread, and improve the anti-sagging ability to enhance fluidity and pumpability. Thereby improving work efficiency.
2. High water retention, prolonging the working time of mortar, and producing high mechanical strength when solidified.
3. By controlling the consistency of the mortar to form a high-quality surface coating.
Reference dosage: gypsum plaster 0.1~0.3%; gypsum products 0.1~0.2%;
Cement-based plasters and masonry mortars
1. Improve the uniformity, make it easier to coat the thermal insulation mortar, and improve the anti-sagging ability at the same time.
2. High water retention, prolonging the working time of mortar, improving work efficiency, and helping the mortar to form high mechanical strength during the setting period.
3. With special water retention, it is more suitable for high water absorption bricks.
Reference dosage: about 0.2%
Panel joint filler
1. Excellent water retention, which can prolong the cooling time and improve work efficiency. High lubricity makes construction easier and smoother.
2. Improve shrinkage resistance and crack resistance, improve surface quality.
3. Provide a smooth and uniform texture, and make the bonding surface stronger.
Reference dosage: about 0.2%
tile adhesive
1. Make the dry mix ingredients easy to mix without lumps, thus saving working time. And make the construction faster and more effective, which can improve the workability and reduce the cost.
2. By prolonging the cooling time, the efficiency of tiling is improved.
3. Provide excellent adhesion effect, with high skid resistance.
Reference dosage: about 0.2%
self leveling floor material
1. Provide viscosity and can be used as anti-sedimentation aid.
2. Enhance fluidity and pumpability, thereby improving the efficiency of paving the ground.
3. Control water retention, thereby greatly reducing cracking and shrinkage.
Reference dosage: about 0.5%
Water-Based Paints and Paint Removers
1. Extended shelf life by preventing solids from settling. Excellent compatibility with other components and high biological stability.
2. It dissolves quickly without lumps, which helps to simplify the mixing process.
3. Produce favorable fluidity, including low splashing and good leveling, which can ensure excellent surface finish and prevent paint vertical flow.
4. Enhance the viscosity of water-based paint remover and organic solvent paint remover, so that the paint remover will not flow out of the workpiece surface.
Reference dosage: about 0.05%
extruded concrete slab
1. Enhance the machinability of extruded products, with high bonding strength and lubricity.
2. Improve the wet strength and the adhesion of the sheet after extrusion.
Reference dosage: about 0.05%
Post time: Dec-15-2022