The defoamer must be able to spread quickly on the surface of the foam and be able to penetrate quickly to make the foam burst quickly. The commonly used types of defoamers are silicones and polyacrylates.Silicone defoamers are usually of the polysiloxane type. For example: polydimethylsiloxane containing acrylate functional group and polyether modified polydimethylsiloxane, etc. Silicone has high temperature resistance, low temperature resistance, stable physical properties, chemical inertness, ...

There was a saying on the Internet that 90% of shampoos contain an ingredient called "polydimethylsiloxane", which is the so-called silicone oil smoothing agent. Rumors say that because this chemical substance of silicon or dimethylsiloxane fills the gaps between the hair scales, the hair is very smooth after washing, but due to the impermeability and inertness of silicon, it will Clog the pores, it is easy to make the scalp itchy, even hair loss, hair loss, etc. Let us know some commo ...

Resin usually refers to an organic polymer that has a softening or melting range after being heated, and has a tendency to flow under the action of external force when softened. It is a solid, semi-solid, or liquid organic polymer at room temperature. Broadly speaking, any polymer that can be used as a raw material for plastic products processing is called a resin.Plastic refers to a material that uses resin (or directly polymerized with monomers during processing) as the main component, and add ...

Dear new and old customers:In the season of golden osmanthus, we are about to celebrate the 71st anniversary of the founding of the People’s Republic of China. In accordance with the spirit of the "Notice on the National Day Holiday Arrangements in 2020" of the General Office of the State Council, the notice of the 2020 National Day holiday arrangements is as follows:From October 1st to October 8th, it will be closed for a total of 8 days.Work as usual on Friday, October 9.It coincide ...

At present, the silicone oil emulsion used in the textile printing and dyeing industry is very extensive, and the amount of use is also very large. Roughly speaking, the most mainstream silicone oil emulsions are divided into two categories:1. Ordinary amino silicone oil emulsion       This category is currently mainly reflected in ice-feeling silicone oil, smooth silicone oil, smooth silicone oil, soft silicone oil, etc. It is mainly used on cotton and cotton blended stretch ...

Softeners can be divided into two types: fatty acid derivatives and silicone oils. The former is a traditionally widely used softener, and the latter is a new species that comes from behind. The development of silicone softeners is fast, and new varieties with various properties and functions are constantly being developed and marketed.Because silicone softeners not only have better softening effect than traditional softeners, but also the finishing effect has better durability. Therefore, it ha ...

Silicone anti-sticking agent refers to a kind of anti-sticking material with low toxicity, low polarity, low surface tension and immiscibility with organic polymers. It is a kind of anti-sticking agent widely used at present. Silicone anti-sticking agent is currently the most widely used anti-sticking agent, and it is also a kind of organic silicon material with huge market and broad prospects.There are three types of silicone release agents: solvent type, water emulsion type, and solvent-free t ...

Silicone oil defoamers are widely used in the petroleum industry and have become an indispensable and important additive in the production process. Due to the extensive use of strong foaming surfactants in drilling fluids, defoamers are not only indispensable for extracting crude oil, but defoamers must also be used in the post process of crude oil refining. In the crude oil distillation process, silicone oil defoamer is used. Secondly, the gas removed from the top of the tower or the natural ga ...

One: Environmental protection From the perspective of environmental protection, water-based coatings have natural advantages over oil-based coatings (solvent-based wood coatings). In theory, the lower the VOC content, the higher the environmental protection, but the low VOC content has an impact on the abrasion resistance, hardness, and scratch resistance of oil-based coatings. The above indicators have always been technical problems that need to be overcome in water-based coatings. How to achie ...

1. The local surface tension of the foam decreases and the foam collapsesThe origin of this mechanism is to sprinkle higher alcohol or vegetable oil on the foam. When it dissolves into the foam liquid, it will significantly reduce the surface tension there. Because these substances are generally less soluble in water, the reduction in surface tension is limited to the local area of ​​the foam, while the surface tension around the foam hardly changes. The part with reduced surface tension is pu ...