defoamer-antifoam

  Current status and development trend of defoamers for waterborne coatings in China INTRODUCTION of defoamers for waterborne coatings Although the amount of additives used in water-based coatings is small, its effect is huge. Generally speaking, many problems encountered in the production, construction and application of water-based coatings can be solved by additives, among which defoamers for waterborne coatings are one of the more important additives. China is a major producer of architectural coatings, of which latex paint is the largest and most important variety. Latex paint has a large demand for defoamers, and it is increasing year by year, so the development of defoamers is very important. Before the German BYK additives entered the Chinese market, China's defoamers for waterborne coatings market was almost blank. At the same time, the magical functions of water-based paint additives began to receive approval, and Japan's Nippon Paint Company launched latex paint in C...

INVELYCHEM is focus on defoamers in China with full range of industries over 10 years, as ANTIFOAMS producer,Invelychem offers a great alternative choice to customer globally.  In 2019, we expand our capacity up to 18,000tons/year because of the rapid growth of our  business. Silicone based defoamers : 8000Tons/Year Fatty Alcohol based defoamers: 6000Tons/Year Mineral Oil based defoamers: 1000Tons/Year Polyether based defoamers: 3000Tons/Year. Our philosophy is refreshingly simple. To produce the best products in the market and support this with an outstanding technical sales and customer support team.  Chinese Leaders in Foam Control Solutions—Serving global market with our profession for more info:  https://www.ywlchemical.com/

How to choose the appropriate defoamer for low viscosity acrylic adhesive What is defoamers? Antifoaming agents are substances with lower surface tension and higher surface activity, which can inhibit and eliminate foam in liquids, which means that antifoaming agents can reduce the surface tension of water, solutions, suspensions, etc. Some bubbles are eliminated. The long-term defoaming is also called anti-foaming. The length of the anti-foaming time is the main symbol of the quality of the antifoaming agent. In most cases, the use of anti-foaming agent is to use his anti-foaming properties, rather than the initial anti-foaming properties. Defoaming and foam suppression are relative. Products with good defoaming performance will have relatively poor foam suppressing performance. In actual application, it depends on the specific situation. Therefore, from the perspective of defoaming effects, defoamers include defoamers, defoamers, and defoamers, which are collectively called defoamers...

1. Turbidity of defoamer: The defoamer is not compatible with the system used, the second is suspended in it. Then the performance of the defoamer will vary greatly due to the different dosage and color of different materials. But as long as the final defoaming effect is good, the foam suppression time is long. 2. Antifoaming time of antifoaming agent: defoamers The nature and content of the silicone oil in the defoamer can determine the length of time the defoamer suppresses the foam in the system and the duration of use. The particle size of the antifoaming agent determines the filtration resistance of the antifoaming agent. During the use, the sewage needs to be filtered multiple times. Both the anti-foam effect and the anti-foam effect will have a certain impact. 3. The defoamer fails: There are many types of defoamers on the market, and different defoamers have different properties. Some defoamers have poor acid and alkali resistance, which can cause the silicone oil to decompose,...

Do you know how to control defoamer dosage in the WWTP in order to make defoamer work best? We know that sewage and wastewater need to be treated before it can be discharged daily. But there is a lot of bubbles in the wastewater without treatment, and these bubbles are difficult to eliminate. We must use wastewater treatment and defoamer before we can discharge. . However, how to use the defoamer and how much can be used to just eliminate all the bubbles, many people do not understand the principle, so the defoaming effect is not ideal. Before we understand the defoamer, we must first understand its function and principle! Anyone that can destabilize the foam can be used for defoaming. At present, there are many types of defoamers for wastewater treatment, which are mainly divided into complex system water treatment, high temperature water treatment, sewage treatment, general sewage treatment, and pulp mill water treatment. Use different defoamers depending on the nature of the wa...

Tips for making Coating Formula and defoamer in coating How many factors would affect defoamer performance in the paint&coating? Ⅰ . Surface Tension The surface tension of the paint has a greater impact on the defoamer. The surface tension of the defoamer must be lower than the surface tension of the paint, otherwise the defoaming and antifoaming effects cannot be achieved. The surface tension of the coating is a variable factor, so when selecting a defoamer, a constant surface tension must be taken into account, and the surface tension change factor must be taken into account. Ⅱ . Effects of other additives The surfactants used in coatings are mostly incompatible with the tendency of defoamers to function. In particular, emulsifiers, wetting and dispersing agents, leveling agents, thickeners, etc. can affect the effectiveness of defoamers. Therefore, we must pay attention to the relationship between different auxiliaries when ...

The magical effect of fumed silica in silicone rubber Fumed silica is one of the most important high-tech ultra-fine inorganic new materials. Due to its small particle size, it has a large specific surface area, strong surface adsorption, large surface energy, high chemical purity, good dispersion performance, thermal resistance, It has specific properties in terms of electrical resistance, etc. Its superior stability, reinforcement, thickening and thixotropic properties are unique in many disciplines and fields and have an irreplaceable role. Today, Xiaobian will work with you to learn how to apply fumed silica in silicone rubber. Application of fumed silica in high temperature vulcanization (HTV) silicone rubber The use of fumed silica can be divided into silicone materials and other fields, in which the amount of silica in the silicone material is nearly 60%, and the silicone rubber is the most used material in the silicone material. It can be added in an amount of up to 50% ...

Effect of fumed silica addition on tensile strength and hardness of RTV silicone rubber Fumed silica is a very effective reinforcing filler for RTV silicone rubber and can significantly increase its strength. This aspect is due to the small size effect of the fumed silica particles and the large specific surface area; on the other hand, because the surface contains many silicols, the particles can form a network structure through the interaction of hydrogen bonds and van der Waals forces, while silica The particles also interact strongly with the silicone molecules, improving interfacial adhesion. The smaller the particle size of fumed silica, the larger the specific surface area, the larger the contact surface between the particles and the rubber compound, and the more bonding points, the better the reinforcing performance for RTV silicone rubber, the tensile strength, tear strength and resistance of the vulcanized rubber. The abrasiveness and hardness are also high, but at the same...

Defoamer for industrial circulating water Industrial circulating water defoamer is a defoamer developed according to the characteristics of industrial circulating water foaming in the cooling water system. Industrial circulating water is also called cooling circulating water, and is mainly composed of a circulating pump, a control system, a check valve, and the like. However, when water treatment is carried out using industrial cycle machine technology, foam is easily generated due to agitation, entry of soluble gas, equipment, water quality, additives, and the like. If these foams are discharged without treatment, the impact on the ecological environment will be very large. Therefore, it is necessary to use industrial circulating water defoamer at this time. Industrial circulating water process      The industrial circulating water defoaming agent is a defoaming agent which is prepared by compounding a modified silicon polyether with a modified siloxane and us...

How to use defoamer for oil& gas? Do you know why should use defoamer in oil&gas production? In the petroleum industry, defoamer is necessary from the extraction and processing of crude oil. During the drilling process, a mud pump is used to hit the mud along the hollow of the drill pipe to the drill bit at the bottom of the drill pipe, and then The space between the drill pipe and the wall of the well is returned to the ground, and the cuttings that are drilled down are carried along with the return. After the cuttings have settled in the mud pool, they must be recycled for clean use. There are several main ways of foam generation during drilling: When natural gas overflows in the formation, foam is generated in the mud, and the surfactant in the mud has the function of stabilizing the foam, so that the foam generated by the mud is too late to burst and circulate to In the well; Too much surfactant; Foam generated from the gas generated by decomposition or fermentation...

Defoamer Test Method Defoamer testing methods are divided into dynamic defoaming and static defoaming tests. If your foaming environment is different, the recommended test methods are different. There are three main types of foam experiments to characterize the activity of defoamers. Persistence. As we have different experimental conditions in different laboratories and the experiments used in our research to obtain results from existing literature, we will introduce these experiments below. Other methods are sometimes used depending on the particular application. 1.Ross-Miles Foam Tester Features: Tested for strong foaming environments. This experiment is widely used for characterization (1) Foaming of surfactant solution (2) Research and application of foam stability in the presence of defoamer In the foaming system, the defoaming performance test was carried out by circulating bubbling by a Ross-Miles foam meter. In a 2000 mL measuring cylinder, a certain amount of foaming ...

Our Spring festival is coming in next week, Thanks for your supports, my friends, i hope you has great success in 2020! By the way: our office and factory will closed on next week, and will back to work on Feb, 03, 2020, However, you can contact me freely if anything, i will reply you whithin 24 hours. Below is my last shipment to Shanghai Port before our holiday! hashtag # antifoam hashtag # defoamer hashtag # invelychem https://www.ywlchemical.com/

What is pesticide additives and why should use defoamer for pesticide production? Pesticide additives are auxiliary substances added to the processing or use of pesticide preparations and used to improve the physical and chemical properties of pharmaceuticals, also known as pesticide adjuvants. The auxiliaries themselves are essentially free of biological activity, but can affect the control effect. With the wide use and development of pesticide additives, its variety is also increasing, so the choice of such additives has become the second biggest choice for farmers to choose pesticides. 1. Auxiliary agent to help disperse the original drug Filler and carrier A solid inert mineral, plant or synthetic material added to a solid pesticide formulation for the purpose of adjusting the finished product content or improving the physical state. The filler is used to dilute the original drug to increase the dispersibility of the original drug, and the carrier also has the function of a...

Why is there bubble in sewage treatment? What are the hazards of these bubbles? How to eliminate these bubbles? In the process of sewage treatment, I believe that everyone often encounters a large amount of foam in the biochemical pool, and if it is at rest, it will overflow from the pool, causing serious pollution of the external pool wall of the external equipment, which will deteriorate the operating conditions. Affected  the surrounding environment Type of foam in sewage treatment 1.    Initial bubble In the initial stage of aeration tank start, the sludge in the aeration tank is not suitable for the water quality of the sewage, and is not suitable for the growth environment, and foam is easily formed. As the sludge adapts to water quality, the foam will decrease. At the beginning of the aeration tank start-up, the sludge is relatively small, the sludge load is high, and foam is easily generated. After the amount of sludge increases, the foam will gradua...

High temperature overflow printing and dyeing defoamer Defoamer for textile can workable at over 100 ℃？ yes or no? Printing and dyeing process: Raw cloth preparation → Singeing → Refining → Bleaching → Setting → Satinization → Dyeing and printing →Finishing. Here will show INVELY-6200 which is workable over 100 ℃ with good performance. Desizing The main role of desizing: remove slurry as much as possible, creating favorable conditions for subsequent processing. Common alkali desizing principle: The slurry swells under the action of hot alkaline solution, from the gel state to the sol state, and becomes loose with the fiber, which is easy to wash off. Foaming occurs more during desizing, and the application of defoaming agents is mainly concerned with the pH and temperature of the foaming environment. INVELY-6200 is recommended when the temperature is higher than 90 ° C.  Dyeing According to the temperature can be divided into: normal temperature dyeing (room tempe...