In the peak season of EVA demand, EVA price is expected to reach a record high
From September to October 2022, foam grade and cable grade EVA will usher in the seasonal peak demand season, with the demand for PV grade EVA rising, while the domestic PV grade supply has been fully released, and the overseas PV grade import increment is limited. The reason is that the supply gap caused by the shortage of natural gas in Europe in winter is expanding, and the upstream production problems in the United States drag EVA exports. Globally, China's EVA price is on the low side....
Application fields of polyvinyl butyral (PVB)
Application field of polyvinyl butyral -- safety glass For special glass products such as safety glass and bulletproof glass, a film made of polyvinyl butyral (PVB) is sandwiched between the two layers of glass, so that its glass has low-temperature impact, windability, light transmission, light resistance, weather resistance, sound insulation, ultraviolet ray insulation and other properties. When subjected to strong impact, polyvinyl butyral (PVB) can absorb most of the impact energy, so that...
Development status of China's dioctyl phthalate (DOP) industry in 2022
1. Industrial chain Dioctyl phthalate (DOP), an organic ester compound, is a common plasticizer. The main reaction in the production of dioctyl phthalate (DOP) is esterification reaction, that is, under the condition of catalyst and heating, phthalic anhydride and octanol produce dioctyl phthalate and water. Dioctyl phthalate is an important general plasticizer. It is mainly used for the processing of polyvinyl chloride resin, but also for the processing of high polymers such as chemical fiber...
Effect of polyvinyl alcohol thickener and its added amount
Polyvinyl alcohol thickener began to be researched and developed in China in the 1950s, and PVA products began to appear in the market in 1970. Due to the continuous improvement of the synthesis technology and the continuous reduction of the price, it has been widely used and developed rapidly., Its thickening characteristic for polyvinyl alcohol (PVA) glue is that it can give play to the potential of polyvinyl alcohol. It is an ideal thickener for construction glue and can be called a...
Analysis of China's carbon black industry in 2021
1、 Carbon black industry chain Carbon black, also known as carbon black, is a kind of amorphous carbon. It is a light, loose and very fine black powder with a very large surface area ranging from 10 to 3000 m2 / g. it is the product of incomplete combustion or thermal decomposition of carbonaceous substances (coal, natural gas, heavy oil, fuel oil, etc.) under the condition of insufficient air. Those made of natural gas are called "gas black", those made of oil are called "lamp black", and...
The supply of PVC in China has declined recently
Introduction Recently, due to centralized maintenance and load reduction of some production enterprises, the operating load rate of PVC industry has dropped to a relatively low level, and the supply of PVC has decreased. However, due to the continued weakness of the downstream demand side, the spot supply in the market is still relatively loose, and some PVC manufacturers are still facing the pressure of sales and inventory. At present, the demand side has not shown obvious signs of recovery,...
Brief analysis on supply and demand of vinyl acetate and polyvinyl alcohol industries in 2022
(1) Upstream vinyl acetate industry: 1) Basic information of vinyl acetate industry: vinyl acetate (VAC) is an important organic chemical raw material with molecular formula of C4H6O2, also known as vinyl acetate and vinyl acetate. Vinyl acetate is mainly used in the production of polyvinyl alcohol, ethylene vinyl acetate copolymer (EVA resin), ethylene vinyl alcohol copolymer (EVOH resin), vinyl acetate vinyl chloride copolymer (vinyl chloride resin), white latex, acrylic fiber and other...
Research and Analysis on development prospect and market demand of modified starch industry in 2022
What is the development status of modified starch industry and the market price of modified starch? At present, China's denatured starch industry has transitioned from traditional low-value products to high-end products and rich variety structure to strive to meet the high-end demand of the market. However, the current single product and low value are still the main reasons restricting the industrial development. The consumer market still has great potential which has not been fully developed....
The release of EVA capacity will greatly boost the demand for ethylene, and there will be a supply gap for vinyl acetate
At present, the supply and demand of vinyl acetate remain in a tight balance. With the rapid growth of EVA demand driven by the subsequent photovoltaic adhesive film, there will be a gap between supply and demand of vinyl acetate by ethylene method. It is estimated that the demand for vinyl acetate in 2022-2024 will be 23.2/41.3/513000 tons respectively. 1) Vinyl acetate mainly produces polyvinyl alcohol, and the industry is in tight balance between supply and demand The production process of...
Concept, application and development trend of modified starch
01 Concept and characteristics of modified starch In order to improve the properties of starch and expand its application range, physical, chemical or enzymatic treatment is used to introduce new functional groups into starch molecules or change the size of starch molecules and the properties of starch particles, so as to change the natural characteristics of starch (such as gelatinization temperature, thermal viscosity and its stability, freeze-thaw stability, gel force, film-forming property,...
PVC prices experienced a rapid decline and rebounded after oversold
Introduction Recently, the PVC market has performed poorly. After a smooth decline in prices, PVC has rebounded since mid July. However, the improvement of supply and demand fundamentals is expected to be small in the future, and there is still some pressure on the macro side. We need to pay attention to the possibility of PVC falling after rising. Recently, the domestic PVC market performed poorly and the market atmosphere was depressed. The PVC market experienced a rapid decline from June to...
Five methods of modification of polyvinyl alcohol (PVA)
Polyvinyl alcohol (PVA) is a colorless, non-toxic, non corrosive, biodegradable water-soluble organic polymer. At present, in addition to being used as raw material of vinylon, PVA is increasingly widely used in industrial fields such as textile size, coating, adhesive, emulsifier, film and so on. However, PVA contains a large number of hydroxyl groups, which leads to poor water resistance and stability of PVA, thus affecting its application. In the application of chemical fiber industry, PVA...
Development and pattern of titanium dioxide industry
(1) Output of titanium dioxide in China The research and establishment of titanium dioxide industry in China began in 1955, but the substantial development of titanium dioxide industry began in 1998. According to the statistical data of the titanium dioxide sub center of the National Productivity Promotion Center of the chemical industry, the total output of titanium dioxide has increased from 140000 tons in 1998 to 3.79 million tons in 2021. In terms of capacity utilization, in recent years,...
Explanation of common terms in carbon black industry
collection of carbon black The process of separating carbon black from carbon black flue gas for reprocessing into products. Furnace carbon black is usually collected by cyclone separator in series with bag filter. Contact method carbon black is to deposit the carbon black in the flame reduction layer on the surface of metal (such as channel steel), and then scrape it off and collect it through screw conveyor or pneumatic conveying. Hot cracking carbon black is generally collected by cyclone...
Technical requirements and selection principles of titanium dioxide for PVC products
Titanium dioxide is used as brightener and sunscreen in the formulation of PVC products. Anatase titanium dioxide has poor heat resistance and light resistance, and is mostly used for indoor PVC products, while rutile titanium dioxide is mostly used for outdoor PVC products. In fact, once PVC products are circulated to the market, it is difficult to control their scope of use. Although different PVC products have different requirements for the properties of titanium dioxide used, the main...
Application of rubber carbon black
People who have a little knowledge of carbon black know that carbon black can be divided into "reinforced carbon black", "conductive carbon black", "wear-resistant carbon black" and so on according to its performance. Carbon black can be used as a black dye to make Chinese ink, ink, paint, etc., and can also be used in chemical fibers and plastics... In fact, the industry with the largest amount of carbon black is still the rubber industry. What is the knowledge of the application of carbon...
Use of polyvinyl alcohol and its gel boiling method
Polyvinyl alcohol polymer is a kind of water-soluble polymer obtained by hydrolysis of polyvinyl acetate instead of monomer polymerization. It is soluble in glycerol at 120 ~ L50 ℃, but becomes a jelly when it is cold to room temperature. Polyvinyl alcohol dissolution step: to dissolve polyvinyl alcohol, add the material into room temperature water under stirring, disperse evenly, and then heat up to accelerate dissolution. The use of polyvinyl alcohol of each brand shows that the viscosity of...
How to solve the yellowing problem of PVC pipes
The main reason for the yellowing of PVC pipes is that the amount of stabilizer is not enough or the grade is not good, and there should be redness. It is possible that a stabilizer of particularly poor quality was used But in most cases, it is the problem caused by unbalanced lubrication. Too little lubrication, especially too little external sliding, and too much plasticization cause the pipe to change color and become brittle You can add a little titanium dioxide to see if it can be covered....
Market supply and demand and import and export trade of China's polyvinyl alcohol industry in 2021
1、 Definition and purpose Polyvinyl alcohol, or PVA, is an odorless, white flake, flocculent or powdery solid organic compound with the chemical formula of [c2h4o]n. PVA can be used to manufacture polyvinyl acetal, gasoline resistant pipes and vinylon, fabric treatment agent, emulsifier, paper coating, adhesive, glue, etc. it is an important chemical raw material. At the same time, PVA can also be used to develop new pharmaceutical excipients. Because PVA has the characteristics of convenient...
Effect of polyvinyl alcohol powder on coating
Polyvinyl alcohol powder is widely used in chemical industry, building materials, architectural coatings, daily chemical industry, food pharmaceutical and other industries. Due to the unique characteristics of polyvinyl alcohol, as long as a small amount of polyvinyl alcohol powder is added to the architectural coating, the performance of the coating can be greatly improved. Let's focus on common coatings as an example to see the impact of the addition of polyvinyl alcohol powder on the...
In May, PVC exports decreased slightly month on month, but the quantity remained at a high level
Introduction In May, the PVC export data were released. The export volume remained at a high level. In the short term, the export arbitrage window continued to open, and the export quantity to be delivered was still too much. It is expected that the export volume will still be high from June to July. However, with the advent of the off-season in Southeast Asia and India, the export volume may turn worse month on month. The export fell slightly month on month and remained high as a whole The...
Analysis on the development trend of China's PVC industry in 2021, and the production capacity tends to be stable
1、 Overview of PVC industry development Polyvinyl chloride (PVC) is a polymer polymerized by vinyl chloride monomer (VCM) with peroxide, azo compound and other initiators or by free radical polymerization reaction mechanism under the action of light and heat. It is an important category in synthetic resins. Polyvinyl chloride resin is mainly divided into general resin and paste resin according to its purpose: general resin (g resin) is a resin formed by mixing normal amount of plasticizer or...
Design and determination of application formula of paste PVC resin
The design and determination of a PVC paste resin formula generally go through the following steps 1. According to the properties of the products, the brand of PVC paste resin is determined; 2. Determine the amount of plasticizer added according to the hardness and softness of the product; 3. Determine the type and amount of stabilizer according to performance (such as transparency, toxicity, etc.) and economy; 4. Determine the composition and addition amount of the lubricating system according...
