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The effect and application of hydroxypropyl cellulose ether in building materials. In most cities in China, the environmentally friendly putty that is resistant to water and wiping has been paid attention to. In the past few years, putty made of building glue emits formaldehyde gas hazards.

Enhance the adhesion to the surface of the masonry, and can enhance the water retention, so that the strength of the mortar can be improved. Improve lubricity and plasticity to improve construction performance, easier to apply, save time, and improve cost-effectiveness.

1. Appearance method: Use a glass rod to thinly and evenly cover a small amount of redispersible latex powder on the surface of a clean glass plate. The redispersible latex powder manufacturer places the glass plate on white paper and inspects the particles visually. The appearance of foreign matter and coagulum.

Accurate weighing and measurement of hydroxypropyl methyl cellulose samples, hydroxypropyl methyl cellulose cover the crucible half, calculate the content of iron salt content: the amount of plastic iron is 1000, the sample quality is measured several times and transferred to 50mL Volumetric flask to remove iron; accurately weigh 1～1.5g (accurate to 0.0001g) sample

1. Construction industry: As a water-retaining agent and retarder of cement mortar, it makes the mortar pumpable. Used as a binder in plaster, plaster, putty powder or other building materials to improve spreadability and prolong operation time. It can be used as a paste tile, marble, plastic decoration, paste enhancer, and can reduce the amount of cement.

In order to obtain accurate and reliable hydroxypropyl methylcellulose viscosity measurement data, several points must be noted:

1. The performance indicators of the instrument must meet the requirements of the national metrological verification regulations.

For the calculation of the insoluble content of hydroxypropyl methylcellulose, the remaining residue should not exceed 5mg (0.5%). Add 300mL of distilled water and set aside; dry the sample and the No. 1 vertical melting glass crucible in advance. The washing liquid is also added to the above glass crucible and filtered, put into a beaker,

Overview of cellulose ether: Cellulose ether is a non-ionic semi-synthetic high molecular polymer. It has two types of water-soluble and solvent-based. The effects caused by different industries are different, such as in chemical building materials. It has the following compound effects:

1. The pure HPMC is in a fluffy visual state, with a small bulk density, ranging from 0.3-0.4g/ml; adulterated HPMC has better fluidity and feels heavier, which is obviously different from the original appearance.

2. The aqueous solution is clear and has high light transmittance, and the water retention rate is ≥97%; the adulterated HPMC water solution is turbid, and the water retention rate is difficult to reach 80%.