- August 6, 2021
- Posted by: admin
- Category: News
How to correctly distinguish redispersible latex powder?
Redispersible latex powder is a water-soluble redispersible powder, which is a polymer of butadiene and vinyl acetate, and uses acrylic emulsion as a maintenance colloidal solution. Therefore, the redispersible latex powder is very popular in the construction industry sales market. The improper use of the redispersible latex powder leads to the unidealization of the actual effect of the engineering construction.
How to identify redispersible latex powder:
1. Mix the redispersible latex powder and water in a ratio of 1:5, stir evenly and let stand for five minutes, and then observe the sedimentation of the bottom layer. Generally, the less the sedimentation, the better the quality of the redispersible natural latex powder. it is good.
2. Mix the redispersible latex powder and water in a ratio of 1:2, stir well and let stand for 2 minutes, then stir evenly, pour the aqueous solution on the neatly placed laminated glass, and place the laminated glass in a natural ventilated shade After sufficient dryness, peel off the coating on the laminated glass and observe the polymer film. The more transparent it is, the better the quality of the natural latex powder. Then the film should be properly involved. The better the elasticity, the better the quality. Well, cut the film into strips and soak in water, and observe after 1 day. It is cost-effective with less melting.
3. Add an appropriate amount of natural latex powder to weigh, put it in a stainless steel container after weighing, raise the temperature to around 500 degrees, burn it at 500 degrees, and then weigh it after cooling. The harder the net weight, the better the quality.
4. Use carton board or veneer board for glue dispensing experiment. Take two small pieces of cardboard or thin wood board of the same size, apply adhesive on the page of the test piece. The glue should be evenly distributed. Place the two main boards with adhesive and apply them with 500g-1000g hanging objects. After 30 minutes of pressure, remove the test. If it can be bonded firmly, it is a good quality rubber powder product. If only a part of the page is damaged, it means that the adhesive strength of the adhesive powder is not very good, and the quality is not good enough. If the page is intact and undamaged, it indicates that it is a counterfeit.