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Putty is a coating material that is often used for base surface treatment when painting interior and exterior walls. The main function is to fill in the defects of the base wall and to micro-level the base surface. For better work results, we recommend using HPMC in putty powder.
Hydroxypropyl Methyl Cellulose (HPMC) is a non-ionic cellulose ether. It is an odorless and tasteless white powder. It is made from purified cotton or wood pulp through a series of etherification reactions.
Hydroxypropyl Methyl Cellulose (HPMC) has thermal gelation property. Its aqueous solution will precipitate and gel and then dissolve again after cooling. The gelation temperatures vary according to different specifications. Its solubility also varies with the viscosity, and the lower the viscosity is, the higher the solubility will be. Essentially, HPMC is methyl cellulose modified by epoxy methane, so it has similar characteristics to methyl cellulose that soluble in cold water but insoluble in hot water. The solution doesn&#;t contain an ionic charge, so it will not react with metal salts or ionic compounds.
Hydroxypropyl Methyl Cellulose (HPMC) has good dispersibility, emulsification, thickening, adhesiveness, water-retention, and glue-retention, so it is widely used in pharmaceuticals, petrochemicals, construction, ceramics, textiles, food, household chemicals, synthetic resins, coatings, and electronic products, etc.
According to the application, Hydroxypropyl Methyl Cellulose (HPMC) can be divided into construction grade, food-grade, and medical grade. In construction, HPMC is mainly used in putty powder, accounting for 90% of the total.
The company is the world’s best HPMC for putty powder supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.
HPMC in putty powder are mainly used as thickeners, water-retentioner, and lubricants.
Hydroxypropyl Methyl Cellulose (HPMC) does not participate in any chemical reactions except as an auxiliary molecule. The process of adding water to putty powder is placed on the wall as a chemical reaction. In the process, a new substance (calcium carbonate) is formed.
The main components of ash calcium powder are: Ca(OH)2, a mixture of CaO, and a small amount of CaCO3. The reaction equation is as follows:
CaO+H2O=Ca(OH)2 &#;Ca(OH)2+CO2=CaCO3&#;+H2O
In this process, gray calcium will be transformed into calcium carbonate under the action of CO2 and water, while HPMC is only working as a water-retentioner to assist the reaction under the better condition without participating in the reaction.
The putty formula can be different according to different specifications. Therefore, the viscosity and the dosage of Hydroxypropyl Methyl Cellulose (HPMC) are also different. In practical applications, it is recommended to use HPMC products with lower viscosity in winter, which is more conducive to construction. Otherwise, when the temperature is low, the viscosity will increase, which may cause trouble for further applications.
At the same time, the corresponding preparations should be done before construction. The underlying surface should remain firm and level. Dry and clean in advance to ensure that the surface of the base is free of grease, batik and other loose substances. Construction workers should also do safety protection work before construction to avoid contamination of window sills, door and window glass and other completed sub-projects during the construction process.
HPMC, or Hydroxypropyl Methylcellulose, is a versatile chemical compound widely used in various industries, particularly in the production of putty powder. Putty powder, a key ingredient in construction and woodworking, is employed for filling, smoothing, and bonding surfaces. The addition of HPMC significantly enhances its performance and workability. Hydroxypropyl Methylcellulose, a type of cellulose ether, is derived from natural cellulose through chemical modification. Its molecular structure makes it an ideal additive due to its unique properties such as water retention, thickening, and film-forming abilities. In the context of putty powder, HPMC serves as a binding agent, improving the mixture's consistency and reducing shrinkage during drying. When HPMC is incorporated into putty powder, it enhances its workability, making it easier to apply and spread evenly on surfaces. It also improves the powder's water retention, allowing for a longer open time, which is crucial for large-scale applications where extended working periods are necessary. Moreover, HPMC contributes to the final finish, ensuring a smooth, crack-free surface after drying. The percentage of HPMC used in putty powder can vary depending on the specific requirements of the application The percentage of HPMC used in putty powder can vary depending on the specific requirements of the applicationThe percentage of HPMC used in putty powder can vary depending on the specific requirements of the application The percentage of HPMC used in putty powder can vary depending on the specific requirements of the application hpmc for putty powder . Generally, a lower percentage is sufficient for basic applications, while higher percentages may be needed for more demanding tasks that require superior adhesion and durability. The precise ratio needs to be determined through careful experimentation and testing, balancing the desired properties with cost-effectiveness. In addition to its functional benefits, HPMC is also environmentally friendly, being derived from renewable resources and biodegradable. This eco-conscious aspect further underscores its attractiveness in the construction industry, where sustainability is increasingly becoming a priority. In conclusion, HPMC plays a vital role in the formulation of putty powder, augmenting its performance, workability, and sustainability. Its ability to enhance the quality of finished surfaces and improve the overall efficiency of construction processes makes it an indispensable component in modern putty powders. As technology advances and construction demands evolve, the use of HPMC in putty powders is expected to continue growing, solidifying its position as a cornerstone in the industry.
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