Naphthalene is an organic compound with the formula C10H8. It is the simplest polycyclic aromatic hydrocarbon and is a white crystalline solid with a characteristic odor that is detectable at concentrations as low as 0.08 ppm by mass. Industrial naphthalene is white or reddish, yellowish flaky crystals, has a unique smell, is volatile [...]
DEFINITION ALPHA GYPSUM is a common ingredient for making plaster. Alpha gypsum is made by processing gypsum stone into a fine powder and is well regarded for its strength and low absorptive levels. DIFFERENCE PHYSICAL PROPERTIES 1.Hemihydrate gypsum has two forms: α and β, both of which are rhombic [...]
EPS Beads Making Machine EPS auto batch pre-expander, EPS beads making machine is functioned to expand EPS raw material to the required density. Material filling and expanding are done batch by batch, so it’s called Batch pre-expander. EPS auto batch pre-expander EPS beads making machine is a complete automatic EPS machine. [...]
In terms of upstream silicon metal, the price of silicon metal (441#) showed a sustained bottoming out this week, kindly refer to below image. The overall domestic silicone DMC market rebounded slightly and tended to stabilize. The National Development and Reform Commission recently announced the completion of the dual control targets for [...]
STANDARD WEIGHT IN CHINA The Chinese gypsum board standard stipulates that the surface density of the corresponding thickness of the gypsum board is: the surface density of the 12mm thickness gypsum board should not be greater than 9.0kg/m2. REASON ONE: GYPSUM QUALITY If the quality of the gypsum board [...]
Market research organization Future Market Insights (FMI) estimates that between 2022 and 2030, the compound annual growth rate of all applied gypsum markets in the world will reach 5%. FMI stated that this would be due to the global construction industry's growth, digitization, and technological advancement. FMI noted that economic activity must first return [...]
There are 99 different active producers of gypsum wallboard in 2021. The top 10 gypsum wallboard producers in 2021: 1. Knauf ● 3294Mm2/yr 2. BNBM ● 2832Mm2/yr 3. Saint-Gobain ● 3294Mm2/yr 4. National Gypsum ● 794Mm2/yr 5. ETEX Group ● 721Mm2/yr 6. Georgia-Pacific ● 677Mm2/yr 7. Yoshino Gypsum ● 631Mm2/yr 8. American Gypsum [...]
How many years can silicone oil keep in stock? Silicone oil, used as a waterproof additive in gypsum board production, is stable chemistry and therefore does not have an official shelf life. In general, the shelf life is a minimum of 12 months when the material is kept in the original container [...]
Adding silicone fluid is efficient to improve the water-resistance of gypsum plasterboard. As the water repellent agent methyl hydrogen silicone fluid added into the gypsum, the polysiloxane with -Si-O-Si main molecular chain and organic molecular side chain will combine with -OH molecular chain in gypsum raw material, to form a low tension [...]
Organic Chemical Material: Silicone DMC from the year 2019 compared to 2020 in the above chart. Looking back at the main trend of DMC in 2019, the market is still suppressed first and then increased. The price fluctuations throughout the year were noticeable and soaring, and emergency stops are the norm. [...]
The water-reducing agent is an additive that can keep the working fluidity of gypsum slurry unchanged and significantly reduce the added amount. Adding water reducing agent in the production of gypsum board, even in the case of a lower water-to-slurry ratio, still can improve the proper fluidity of gypsum slurry. Therefore, reducing the amount [...]
Fibre materials can be added to the gypsum slurry to improve the gypsum board's strength and toughness. The requirement for the use of fibre materials is to strengthen the strength of the gypsum board while not affecting the strength, density and elasticity of the gypsum board, adhesion, etc. Fibre materials play a [...]
Since the development of the gypsum board, people have become more demanding on the board's weight. Under the premise of ensuring strength, gypsum boards with a smaller unit weight are more and more popular. It saves transportation costs, reduces construction personnel's labour intensity, and facilitates its application in high-rise buildings. Therefore, the foaming agent is [...]
Unfortunately, China's various industries will have an unprecedented rise due to many reasons, ranging from 5% to 20%. Apart from the exchange rate and raw material, the major factors are international politics and finance. Due to COVID-19, many countries are constantly issuing currency to ease the economic crisis. The United States uses [...]
Summary Many factories still use manual palletizing machines with low production capacity and require at least two human workers. This ceiling tiles machine solves the palletizing problem, achieving automatic stacking function, reducing labour, saving costs, and increasing production efficiency. Gypsum Board Lamination Machine 1. Easy to install and easy to operate 2. Full-automatic [...]
Some customers told us that their blades were not applied as it was expected, kindly advise to check the dryer running speed, the moisture will cause the blade to bad cutting performance. Make sure the board is fully dried. Here is the example, let's set the gypsum board length of the production [...]
China Manufacturing Raw Materials Purchase Price Index is at a current level of 67.10, up from 53.80 one year ago. This is a change of 24.72% from one year ago. In 2020, worldwide demand for oil fell rapidly as governments closed businesses and restricted travel due to the COVID-19 pandemic. The average [...]
From the perspective of the performance development process of water reducing agents, the development of water-reducing agents can be divided into the following four stages:① Development and application of ordinary water-reducing agents represented by lignosulfonate;② Superplasticizer represented by β-naphthalenesulfonate formaldehyde condensate (PNS) and sulfonated melamine formaldehyde condensate (PMS);③ A superplasticizer with slump retention ability modified [...]
SUMMARY Automatic gypsum cornice production line is composed of a dosing system, mixing system, foaming system, transporting line system, cleaning system, maintenance and drying system, etc. The traditional manual procedure cannot control the quality, especially lead cornice to low strength, poor waterproof performance. With our R&D, now problems solved by this production line, the [...]
We are sharing you some information about gypsum edge tape, which can seal two boards together only with water, no pollution. The popular edge tape most of gypsum board factories applied, specification as below: 1. Width: 50mm 2. Length per roll: 1000m 3. Paper: 68GSM/sqm 4. Glue: 20GSM (123microns) 5. Flexo printing 6. Glue: [...]
The main component of the naphthalene basis superplasticizer is the sodium salt of naphthalene sulfonic acid formaldehyde condensate, which is widely applied in concrete and cement. The characteristics of sodium naphthalene sulfonate are high water reduction rate, a low impact on the concrete setting time and low air-entraining properties. Because of these [...]
High range water reducer is the key material and essential technical means for preparing advanced cement-based materials. The use of superplasticizer can produce ultra-high-strength concrete with a compressive strength of 120-150MPa, which is far higher than the strength level of cement, which ensuring concrete has good construction performance. At present, the synthesis [...]
Chemical material for silicone oil is increasing crazily nowadays, below is the related material trends. DMC prices continue to rise, making the supply of goods insufficient, monomer manufacturers entertained and accept orders in limited quantities. The superimposed emergencies have caused the downstream products to follow up. It is expected that the supply pressure on [...]
High range water reducer, HRWR, has different names in different countries. Europe and the United States used to call it superplasticizers, SP; Germany named it superverflussigar; In Japan call it air-entraining (AE) high range water reducer. In the development process of concrete technology, the invention and application of superplasticizers are recognized as [...]
Abstract: According to the actual situation there are poor adaptability between water reducing agents and gypsum in the production of plaster board, three types of water-reducing agent are chosen in this subject: lignin, naphthalene and polycarboxylate. Based on the requirements of the production process，effects of three different types of water-reducing agent on setting time, [...]
1. The Function of Gypsum Board Adhesive The production and molding of the gypsum board is the bonding of gypsum board surface paper and gypsum slurry. The surface paper must be firmly bonded to the gypsum board core, so that the gypsum board has a specific strength. The effect and performance of the adhesive [...]
The technical parameters of gypsum board are calculated based on the length of 3000mm, the width of 1200mm, and the thickness of 9.5mm.
Introduction Gypsum building material has excellent fire resistance, air permeability and sound absorption property. The excellent appearance of white color and smooth structure is good for decoration, combined with lightweight and relatively low prices, and gypsum building materials were developing very rapidly in recent years. Currently, the gypsum building material is mainly [...]
What is VISIGHT mission? At VISIGHT, our approach to safety and quality chemicals and materials to is be your most reliable and resourceful partner. We pride ourselves on being an Outstanding Materials Supplier. What kind of customers is VISIGHT focusing on? VISIGHT offers a [...]
