Introduction of plastic defoamer, what are the characteristics of plastic defoamer? What is his defo

Plastic defoamer, also known as plastic desiccant, plastic defoaming masterbatch, some plastic raw materials or recycled plastics often contain trace amounts of water, if not eliminated, will form bubbles or water lines on the surface of the processed products, which will affect the performance and appearance of the products. The traditional process of using electric drying machinery to eliminate moisture needs to dry raw materials in advance, resulting in inconvenient production, and there are deficiencies such as low production efficiency, power consumption, deterioration of processing environment, and increased production costs, and the plastic defoamer is a new functional masterbatch specially developed to solve the blister problem of plastic products with PE, PP, ABS, PS, and nylon as raw materials in the processing process. The masterbatch can be molded and processed without going through the drying process through a small amount of addition and simple mixing before plastic molding processing, which has the advantages of easy use, improving production efficiency and reducing energy consumption.

A plastic defoamer is a special surfactant or polymer that is used to reduce the surface tension of liquids, so that bubbles and foam disappear. In the process of plastic processing, such as suspension, after the termination of the emulsion polymerization reaction, the process of non-reaction VCM, etc., the plastic defoamer can effectively eliminate and inhibit the generation of foam, improve production efficiency, and ensure product quality and aesthetics.

There are many types of plastic defoamers, including silicone defoamers, polyether defoamers, natural oil defoamers, etc. Different types of plastic defoamers have different properties and application ranges, and the right type and dosage need to be selected according to the specific situation.

Silicone defoamer is a new type of defoamer, which has the advantages of fast defoaming speed, good foam inhibition, low dosage, good water solubility, etc., and can be well compatible with liquid products, non-toxic and non-corrosive.

There are many types of polyether defoamers, such as GP and GPE. GP type defoamer has poor hydrophilicity and low solubility in foaming medium, which is suitable for thin fermentation broth. GPE-type defoamers are more hydrophilic and suitable for environments with a lot of moisture.

Natural oil defoamers, such as soybean oil, corn oil, etc., are easy to use, low and simple to use, but they are easy to deteriorate when stored poorly, which increases the acid value.

In conclusion, plastic defoamers play a pivotal role in the plastics processing process, and the right type and dosage need to be selected on a case-by-case basis to ensure the best results. At the same time, it is also necessary to pay attention to the environmental protection and safety of plastic defoamers to avoid adverse effects on the environment and human health.

A plastic defoamer is a chemical additive that can effectively reduce the gas content in the polymer melt and prevent foaming. In the process of plastic production, due to the action of mechanical, thermal, chemical and other factors, bubbles or pores are often produced in the plastic melt, which will adversely affect the quality of the product, such as leading to shrinkage porosity, whitening, poor appearance and other problems. Plastic defoamers inhibit these problems by reducing the gas content in the melt, thereby improving the quality and appearance of the product.

Common plastic defoamers include silicone defoamers (such as polydimethylsiloxane), fatty acid amide defoamers, fatty acid ester defoamers, polyether defoamers, etc. These defoamers can be used in different ways and in different areas, depending on the specific situation. At the same time, the amount of defoamer added also needs to be reasonably adjusted according to the production process parameters and product requirements to achieve the best defoaming effect.

The commonly used defoamers in the industry mainly include the following categories:

Polysiloxanes: Polysiloxanes are highly effective defoamers that are commonly used in chemical, oilfield and paper industries, and are particularly effective for high temperatures and high concentration foams.

Silicone: Silicone defoamer has a strong defoaming effect, especially suitable for liquid surfactants to foam rapidly, such as: chemical, oilfield, cosmetics and other industrial fields.

Deaeration resins: Deaeration resins are non-ionic adsorbents that resist the formation of foam by reducing the radius of the gas in the liquid by reducing the surface tension.

Stabilized film-forming bands: These defoamers are characterized by creating a stable film on the surface and are often used in metalworking or spray coatings.

Biological fermentation: defoamers that generate some biological proteins and other substances through microorganisms in the fermentation process to achieve the defoaming effect, which are often used in food, medicine and other industries.

It should be noted that different industries and application fields have different standards and applicable slippery properties for defoamers, and it is necessary to choose the appropriate defoamer according to the actual situation. At the same time, the use of defoamers needs to pay attention to safety and correct dosage to avoid unnecessary harm to the human body, the environment or equipment.

It is used to eliminate harmful foam in industrial production, and is widely used to remove harmful foam generated in the production process of latex, textile sizing, food fermentation, biomedicine, coating, petrochemical, papermaking, industrial cleaning and other industries.

Generally speaking, foam is a crude dispersion of gas in liquid, which belongs to the gas-liquid heterogeneous system. A gas-liquid dispersion with a bulk density close to that of a gas but not to a liquid. Gas-liquid dispersions are divided into "bubble dispersions" with more liquid and less gas, and "bubbles" with more gas and less liquid.

There are many types of defoamers, such as organosiloxanes, polyethers, silicon and ether grafting, amines, imines and amides, which have the characteristics of faster defoaming speed, longer foam inhibition time, wider range of applicable media, and even harsh media environments such as high temperature, strong acid and strong alkali.

Foam and foam often accompany people's life and production, and sometimes need to use it, such as flotation, fire extinguishing, dust removal, washing, manufacturing foam ceramics and plastics; Sometimes it needs to be eliminated, such as fermentation, coatings, papermaking, printing and dyeing, removal of flatulence from internal organs, boiler water, wastewater treatment, and the manufacture of prisms (or glass). "Bubbles" or "bubbles" are insoluble gases that exist in liquids or solids, or in separate bubbles surrounded by their films. The accumulation state in which many air bubbles are gathered together and separated by a thin slowing film is called foam.

The commonly used defoamers in industry are: polysiloxanes, organosilones, deaeration resins, stabilized film forming and biological fermentation.

1. Polysiloxanes

Polysiloxane is a highly effective defoamer, which is often used in the chemical, oilfield and paper industries, especially for high temperature and high concentration foam.

2. Silicones

Silicone-based defoamers have a strong defoaming effect, especially suitable for liquid surfactants to foam rapidly, such as chemical, oilfield, cosmetics and other industrial fields.

3. Degassing resins

Degassation resin is a non-ionic adsorbent that reduces the radius of the gas in the liquid by reducing the surface tension, rejecting hail and thus resisting the formation of foam.

4. Stabilize film-forming

These defoamers are characterized by creating a stable film on the surface and are often used in metalworking or spray coatings.

5. Bifan biological fermentation

Defoamers that generate some biological proteins and other substances through microorganisms in the fermentation process to achieve defoaming effect are often used in food, medicine and other industries.

The above content reference: Encyclopedia - Industrial Defoamer.

Characteristics of plastic defoamers:

Good dispersion, added to the plastic can quickly penetrate into the foam, in order to achieve the rapid elimination of the wheel and the mother of the foam;

High temperature resistance, acid and alkali resistance, and stable defoaming and band inhibition in these environments;

The addition to the plastic will not affect the basic system of the plastic, and will not cause the change of plastic properties.

Defoaming principle: When added to the stock solution, the surface tension of the water can be reduced, when the defoamer is in contact with the bubble film, the surface tension of the bubble film is partially reduced and the rest of the bubble film is kept unchanged, and the stronger tension of the bubble film pulls the weaker part, so that the foam bursts.

The characteristics of plastic defoamers mainly include the following aspects:

1.It can effectively eliminate bubbles and foam generated in the process of plastic processing and improve the quality of plastic products.

2.It has good thermal stability and chemical resistance, and will not affect the performance and appearance of plastic products.

3.It can be used at different temperatures and pressures, and is suitable for different types of plastic processing processes.

4.It will not cause harm to the environment and the human body, and meets the environmental protection and health requirements of the trace shirt.

The defoaming principle of plastic defoamer is mainly to reduce the surface tension and viscosity of the plastic, so that the bubbles and foam can quickly break and dissipate in the plastic. Specifically, the defoamer will form a thin film in the plastic, preventing gas diffusion and foam formation, and will also break the tension on the plastic surface, so that the bubbles and foam will burst and dissipate quickly.

The choice of defoamer needs to be evaluated according to different plastic materials and processing processes, and usually needs to consider factors such as the chemical composition of the defoamer, the temperature and pressure of use, the processing speed and the requirements of the plastic product.

There are two kinds of plastic defoamers, one of which has a volatile slag closure point that is slightly lower than the curing temperature of plastics. One is to reduce the viscosity of the plastic.

The principle of the first plastic defoamer is that before the plastic cures, it volatilizes itself, and the bubbles in the plastic are taken out of the hole, and when the curing temperature is reached, the plastic defoamer has been volatilized, which does not affect the curing of the plastic. The second kind of plastic defoamer, after adding, can reduce the viscosity of the plastic with sock drying effect, so that the bubbles in the plastic can run out smoothly before the plastic cures, so as to eliminate the bubbles.

The defoaming effect of defoamer for polyethylene mainly includes the following aspects:

1.Removal of bubbles: In the production process of polyethylene, due to the influence of processing temperature, pressure and other factors, it is easy to produce bubbles, which affects the appearance and performance of the product. Defoamers can effectively remove air bubbles, make the surface of the product smooth, and reduce the impact of air bubbles on product performance.

2.Reduce surface tension: Polyethylene has a large surface tension, which is easy to produce foam and bubbles, which affects the quality of the product. Defoamers can reduce the surface tension of polyethylene and reduce the formation of foam and bubbles.

3.Improve fluidity: In the production process of polyethylene, it is easy to have problems such as poor fluidity and high viscosity, which affects the production efficiency and quality of the product. Defoamers can improve the flow of polyethylene, making it easier to process and form.

4.Improve product quality: Defoamers can improve the quality and stability of polyethylene products, reduce product defects and defect rates, and improve product competitiveness and market share.

It should be noted that the use of defoamer needs to be evaluated and selected according to the actual situation, and it needs to be used in accordance with the guidance on the instructions to avoid harm to the human body and the environment.

Fermentation defoamer manufacturers include Chongqing Yangxuan Chemical, Suzhou Terrese Environmental Protection Technology, Beijing Zhubao Defoamer Wastewater Treatment Defoamer Manufacturer, etc. A fermentation defoamer is a type of defoamer specifically designed for the fermentation process. These include oil-based defoamers, silicone defoamers, and composite oil-based defoamers.

Manufacturer of fermentation defoamers.

Yantai Hengxin Chemical Technology Co., Ltd. is a high-tech enterprise focusing on the research and development, production, sales and import and export of defoamers. This defoamer has passed EU RoHS certification, halal certification and kosher certification. The types of defoamers include silicone defoamers, polyether defoamers, polyether modified silicone defoamers, powder defoamers and silicone oil defoamers.

Nanjing Huaxing Defoamer **** Mr. Hua is located in the beautiful ancient city of Nanjing. It is a high-tech enterprise focusing on R&D and defoamer production. The existing products include silicone defoamer, medical fermentation defoamer, textile slurry defoamer, food-grade defoamer, soybean protein defoamer, desulfurization defoamer, sewage treatment defoamer.