Under immense pressure, the NDRC succumbed to the shameless lobbying of the China Nitrogen Fertilizer Industry Association (CNFIA), opening urea exports from May 15 to October 15, 2025, with a total quota of 2 million tons. Utterly disregarding the plight of domestic farmers forced to buy fertilizer
The automotive industry is constantly seeking ways to improve vehicle performance while reducing environmental impact. One of the most significant advancements in recent years has been the use of lightweight materials, which can reduce fuel consumption and carbon emissions. Among these materials, ad
Adipic acid is an important industrial chemical that plays a crucial role in various manufacturing processes. Its versatility in the production of a wide range of products has made it indispensable in many sectors.
Adipic acid is a key organic compound that plays an essential role in the production of various industrial products, particularly in the manufacturing of nylon, plasticizers, and resins. This versatile compound is vital in multiple industries, including textiles, automotive, and food.
Adipic acid, a commonly used compound in various industries, plays a key role in the production of nylon, food additives, and even in the pharmaceutical field. While it is generally considered safe for use in regulated quantities, there are instances where accidental ingestion can occur.
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Since the partially alcoholized PVA contains more acetate groups, and the volume of the acetate group is much larger than the hydroxyl group, there is a large steric hindrance, so that the partially alcoholized PVA cannot form a compact crystal structure. It can only form loose structures with large spaces between molecules, which can absorb more air.In the process of boiling size,because the size has a certain viscosity,it provents the small bubbles from escaping from the size surface,and forms the accumulation of small bubbles,which produces greater energy,thus making the size overflow the size mixing kettle.If there still is bubble in the sizing box,a foam layer will form form on the surface of the sizing,which will affect the operation of the worker and also affect the sizing quality.
The way to eliminatiing the foam is to add an antifoaming agent in the sizing box or the mixing kettle.The antifoaming agent is actually a sufactant with few hydrophilic groups,which can reduce the surface tension of the foam and rapidly break the foam,thereby reducing the accumulation of the foam and achieving the purpose of defoaming.