What are the main uses of building-grade hydroxypropyl methylcellulose ether HPMC?
The main uses of ethyl-based HPMC in Jianan Fujiang mustard base are as follows:
First, in the food field, the function is different. It can be used to thicken and make the food more perfect and uniform. For example, in the taste and fruit, adding this ingredient can make it fixed, not easy to divide, and improve the richness of the taste, making it more sticky and adhesive, and the food can better taste its mellow taste. In addition, it can also be used as a water retention device. For baked goods, it can effectively reduce the rate of water dispersion and loss, so that bags, cakes, etc. can maintain a soft taste and extend their shelf life, so that those who consume food can still enjoy new and delicious baked goods for 7 days.
Second, in the construction industry, there is also an extraordinary performance. The addition of cement sand can improve the construction performance of sand. It can increase the water retention of sand, avoid moisture from being quickly absorbed by the foundation, ensure that the cement is fully hydrated, and improve the durability of sand. At the same time, it increases the cohesion of sand, making it easier to wipe and spread during construction, and it is not easy to flow. It is convenient for operation and improves construction efficiency.
Third, it is also important for chemical performance. It can be used for condensation and is used for condensation of chemical products, such as face coagulation, etc. It can reduce the viscosity of the whole product and improve the flow and plasticity of the product, making it more convenient for users to use. In addition, its good film-forming properties can form a thin and uniform film on the surface of the skin or skin, which can protect the skin and prevent the skin, and improve the effect of the chemical product.
What Are the Quality Standards for Building Grade Hydroxypropyl Methyl Cellulose Ether HPMC
The quality of HPMC, which is the key ingredient in the deck of a Jianan boat, is studied because it is very important for the construction of a boat.
The degree of first component, the degree of vitamin HPMC, is high, and the content of vitamin HPMC is low. This is because if there are many, it will not affect the physical properties of the ship, such as hardness and adhesion. It is more likely to cause chemical reactions under different conditions, invade the deck, and endanger the safety of the ship. Therefore, the degree of viscosity needs to be high in order to ensure the high quality of the product.
Furthermore, viscosity is also an important indicator. The appropriate viscosity can make the surface cover the deck evenly, forming a security. If the viscosity is too high, the brush will be trapped, and it is easy to cause uneven thickness; if the viscosity is too low, it will be effectively attached and easy to fall off. Therefore, the viscosity of vitamin HPMC needs to be controlled in a specific setting to meet the needs of the ship's deck.
Qualitative also cannot be ignored. The ship is often in a variety of environments, such as high and high ocean conditions. Vitamin HPMC needs to be kept stable under these conditions, not decomposed or damaged, in order to maintain the effectiveness of the ship's protective deck. Its qualitative and weather resistance need to be high-quality, so as to ensure that the middle product is not good during use.
Solubility is also a consideration. Good solubility can ensure that other ingredients of vitamin HPMC are fully integrated and achieve optimum performance. In the preparation of raw materials, it can be quickly dispersed, avoid separation, sedimentation, etc., and ensure the integrity of the product.
As mentioned above, the product quality of HPMC on the deck of Jian'an ship has strict requirements, such as composition, viscosity, characterization and solubility, so as to provide reliable protection for the deck of the boat and ensure the safety performance of the boat in various environments.
What are the precautions for the storage and transportation of building-grade hydroxypropyl methylcellulose ether HPMC?
Construction grade furanoformyl group vitamin HPMC in storage and transportation, there are a number of precautions need to be carefully observed.
When it is stored, the first weight is moisture-proof. HPMC is hygroscopic. If placed in a humid place, water vapor is easy to invade, causing changes in its properties, or agglomeration, which will damage the quality and use effect. Therefore, dry and ventilated storage should be selected to avoid moisture lingering.
Temperature is also the key. It should not be stored in a place where the temperature is too high or too low. High temperature can easily cause a gradual change in the chemical structure of HPMC, affecting its performance; low temperature may cause it to freeze and destroy the internal structure. The ideal storage temperature is about 5 ° C - 35 ° C, so that its stability can be guaranteed.
The storage place should also be kept away from fire sources and oxidants. Although HPMC is not extremely flammable, it still poses a risk in case of open flames and hot topics. And oxidants may react chemically with it, endangering safety and quality.
As for transportation, there are also many precautions. The handling process must be handled with care, and violent loading and unloading should be avoided. HPMC is mostly in powder or granular form. If it is severely hit, dropped, packaged or broken, the product will leak out, or the performance will be affected by particle breakage.
The choice of transportation means is also important. It is appropriate to use a dry, clean vehicle or container with good sealing performance. If the convertible is exposed to rain, the HPMC will absorb moisture and destroy it; the container is unclean, impurities are mixed in, and its quality is also damaged.
During transportation, temperature and humidity should be controlled. Prevent excessive temperature caused by sun exposure in summer, and avoid severe cold and prevent freezing in winter. If you pass through an area with high humidity, you should strengthen moisture-proof measures. You can lay moisture-proof pads and desiccant in the car.
How to use building-grade hydroxypropyl methylcellulose ether HPMC with other additives
Eh! Building a cement substrate HPMC can be used in combination with other additives, which is one of the most important things. If you want to make sense, study it.
The use of HPMC is of great significance in building a cement substrate. It has the effect of thickening, which can make the material mix more evenly, so as not to be easily divided, such as loose sand gathering into hills, which is solid and orderly. And it can increase the viscosity of the base material, so that the components are dense, such as a solid solution.
It also has its own capabilities for other additives. There are those who promote coagulation, which can make the substrate quickly form, and if spring flowers stimulate flowers, accelerate the hardening process; those who increase the coagulation, can make the substrate not easy to crack, like adding softness, and have the beauty of softness.
However, it is compatible, so be careful. The dosage of HPMC should be appropriate in the medium, and more materials should be viscous, which is inconvenient for construction operations. If the paste is too thick, it should be wiped; the method of less coagulation is effective, and the base material is scattered, such as the wood of the root. And other additions should be added in proportion according to the required properties of the substrate. Such as promoting coagulation, more hardening speed, easy to crack; less coagulation is slow, and the construction period is delayed.
To get a good match, it must be reversed. Check the quality of the material, the performance of the substrate, such as good disease, inspection and research. First determine the amount of HPMC, and then adjust other additions in turn, reduce them, and improve the law. In this way, only the performance of the cement substrate can be improved, and it can become a usable material. The construction needs to be added to the manufacturing process, and the achievement of the beam.
What are the differences between different models of construction-grade hydroxypropyl methylcellulose ether HPMC?
Nowadays, there are different models of construction-grade hydroxypropyl methylcellulose (HPMC). What are the differences between them? Let me explain in detail.
HPMC, the type of HPMC, the first difference is the viscosity. The viscosity is different, and the use is also unique. Those with high viscosity are very effective in retaining water and thickening, and are mostly used in architectural coatings, putty, etc. When applied, the material can be thick, attached to the wall does not fall, and can be moisturized for a long time, so that the coating is dry and uniform, without the risk of cracking. Those with low viscosity have good fluidity and are often used in self-leveling materials, which can make the material spread quickly to form a flat surface.
Secondly, the degree of substitution is different. The degree of substitution is related to the solubility and stability of HPMC. If the degree of substitution is moderate, it dissolves rapidly and uniformly in water, and can maintain stable performance in different environments. If the substitution is too high or too low, not only will the solubility be hindered, but its role in building materials will also be impaired.
Furthermore, the particle fineness is different. Fine particles have excellent dispersion, and can be quickly and evenly distributed when the material is mixed, improving the overall performance. Coarse particles, although the cost is low, are not easily dispersed, or cause uneven material properties.
There are differences in purity. High-purity HPMC has few impurities and has little interference with the performance of building materials, which can ensure long-term stability of the material. If the purity is insufficient, impurities or reactions with other components can affect the strength and durability of the material.
From this perspective, different models of construction-grade HPMC have their own uses due to differences in viscosity, degree of substitution, particle fineness, and purity. They play a unique role in different aspects of construction projects. They should be carefully selected according to actual needs.
