1)?Main application of building material grade cellulose ether

The field of building materials is the main demand field of cellulose ether. Cellulose ether has excellent properties such as thickening, water retention, and retardation, so it is widely used to improve and optimize ready-mixed mortar (including wet-mixed mortar and dry-mixed mortar), PVC resin manufacturing, latex paint, putty, tile adhesive, The performance of building material products including thermal insulation mortar and floor materials makes them meet the requirements of energy saving and environmental protection, improves the construction efficiency of buildings and decorations, and is indirectly applied to masonry plastering construction and interior and exterior wall decoration of various types of construction projects . Due to the large scale of investment in the field of construction engineering, various types of construction projects are dispersed, there are many types, and the construction progress varies greatly, building material grade cellulose ether has the characteristics of wide application range, large market demand, and scattered customers.

Among the middle and high-end models of building material grade HPMC, the building material grade HPMC with a gel temperature of 75°C is mainly used in dry-mixed mortar and other fields. It has strong high temperature resistance and good application effect. Its application performance is the gel temperature It cannot be replaced by building material grade HPMC at 60°C, and high-end customers have higher requirements on the quality stability of this type of product. At the same time, it is technically difficult to produce HPMC with a gel temperature of 75°C. The investment scale of production equipment is large, and the entry threshold is high. The price of the product is significantly higher than that of building material grade HPMC with a gel temperature of 60°C.

The high-end PVC-specific HPMC is an important additive for the production of PVC. Although HPMC is added in a small amount and accounts for a low proportion of PVC production costs, the product application effect is good, so its quality requirements are high. There are few domestic and foreign manufacturers of HPMC for PVC, and the price of imported products is much higher than that of domestic products.

2)?Development Trend of Building Material Grade Cellulose Ether Industry

①?The stable development of my country’s construction industry continues to drive the market demand for building material grade cellulose ether

According to the data released by the National Bureau of Statistics, in 2021, my country’s urbanization rate (the proportion of the urban population in the national population) will reach 64.72%, an increase of 0.83 percentage points compared with the end of 2020, and an increase compared with the urbanization rate of 49.95% in 2010. 14.77 percentage points, indicating that my country has entered the middle and late stages of urbanization. Correspondingly, the growth of total demand in the domestic real estate market has also entered a relatively stable stage, and the differentiation of demand in different cities has become increasingly obvious. The demand for housing continues to increase. In the future, with the decline of the proportion of my country’s manufacturing industry and the increase of the proportion of the service industry, the increase of flexible employment forms such as innovation and entrepreneurship, and the development of flexible office models, new requirements will be put forward for urban commerce, residential space and job-housing balance. Real estate products the needs of the industry will be more diversified, and the domestic real estate industry and construction industry have entered a transitional and transformational period.

The investment scale of the construction industry, the construction area of real estate, the completed area, the housing decoration area and its changes, the income level of residents and decoration habits, etc., are the main factors affecting the domestic market demand for building material grade cellulose ether. The process of urbanization is closely related. From 2010 to 2021, my country’s real estate investment completion and construction industry output value basically maintained a steady growth trend. In 2021, my country’s real estate development investment completion amount was 14.76 trillion yuan, a year-on-year increase of 4.35%; the construction industry’s total output value was 29.31 trillion yuan , an increase of 11.04% year-on-year.

From 2011 to 2021, the average annual compound growth rate of the housing construction area in my country’s construction industry is 6.77%, and the average annual compound growth rate of the construction area of ??housing completion is 0.91%. In 2021, the housing construction area of ??my country’s construction industry will be 9.754 billion square meters, with a year-on-year growth rate of 5.20%; the completed construction area will be 1.014 billion square meters, with a year-on-year growth rate of 11.20%. The positive growth trend of the domestic construction industry will increase the use of building material products such as ready-mixed mortar, PVC resin manufacturing, latex paint, putty, and tile adhesive, thereby driving the market demand for building material grade cellulose ether.

②?The country actively promotes green building materials represented by ready-mixed mortar, and the market development space of building material grade cellulose ether is further expanded

Mortar is a bonding substance used in building bricks. It is composed of a certain proportion of sand and bonding materials (cement, lime paste, clay, etc.) and water. The traditional way of using mortar is on-site mixing, but with the technological progress of the construction industry and the improvement of civilized construction requirements, the shortcomings of on-site mixing mortar have become increasingly prominent, such as unstable quality, large waste of materials, single type of mortar, low degree of civilized construction and pollute the environment, etc.

Compared with on-site mixing mortar, the process of ready-mixed mortar is concentrated mixing, closed transportation, pump pipe transportation, machine spraying on the wall, and the process characteristics of wet mixing itself, which greatly reduces the generation of dust and is convenient for mechanized construction. Therefore Ready-mixed mortar has the advantages of good quality stability, rich variety, friendly construction environment, energy saving and consumption reduction, and has good economic and environmental benefits. Since 2003, the state has issued a series of important policy documents to promote the production and application of ready-mixed mortar and improve the ready-mixed mortar industry standard.

At present, the use of ready-mixed mortar instead of on-site mixed mortar has become one of the important means to reduce PM2.5 emissions in the construction industry. In the future, with the increasing scarcity of sand and gravel resources, the cost of directly using sand on the construction site will increase, and the increase in labor costs will lead to a gradual increase in the use cost of on-site mixed mortar, and the demand for ready-mixed mortar in the construction industry will continue to grow. The amount of building material grade cellulose ether in ready-mixed mortar generally accounts for about 2/10,000. Adding cellulose ether helps to thicken the ready-mixed mortar, retain water and improve construction performance. The increase will also drive the growth of demand for building material grade cellulose ether.