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non-woven fabric

Non-woven fabrics, also known as non-woven fabrics, needle-punched cotton , needle-punched non-woven fabrics , etc., are produced from polyester fiber , polyester fiber (referred to as: PET) and are made through a needle- punching process. They can be made into different thicknesses, feel, Hardness etc. Non-woven fabrics are moisture-proof, breathable, flexible, lightweight, flame-retardant, non-toxic and odorless, low-priced, and recyclable . Can be used in different industries, such as sound insulation, heat insulation, electric heating sheets , masks, clothing, medical, filling materials , etc. Features Non-woven fabrics have no warp and weft lines , making them very convenient for cutting and sewing. They are also lightweight and easy to shape, making them very popular among craft enthusiasts. Because it is a fabric that does not require spinning or weaving. It just orients or randomly arranges short textile fibers or filaments to form a fiber mesh structure, ...

1

3月 5, 2024

1 noun, an absorption oil used to wash out benzene or naphthalene compounds from coal gas. It is a fraction of coal tar or petroleum . The temperature is 230~300°C. Its clear use was not found in the early days. It was used to combine it with coal tar and petroleum. Other components have similar miscibility characteristics and are used to wash the gas generated during the fractionation process to absorb benzene, naphthalene and other substances in the gas, hence the name washing oil, which is now mainly used as a term in the coal tar industry. Generally a yellowish-brown or brown oily liquid. It is mainly composed of naphthalene compounds, acenaphthene , fluorene , oxyfluorene, phenol , nitrogen heteroaromatic compounds, etc. 2 Verb, describing the process of washing out or washing away oil, sometimes used as a synonym. It is commonly used in the field of oil extraction in industry. Introduction Washing oil is one of the important fractions in the coal tar distill...

2

3月 11, 2024

Latex latex was formerly known as latex. A general term for colloidal emulsions formed by polymer particles dispersed in water. The water dispersion system of rubber particles is usually called latex; the water dispersion system of resin particles is called emulsion. It can be directly used for surface coating , making films and adhesives, etc. After processing, it can be made into raw rubber and latex products (such as sponges, gloves, balloons, condoms, medical hoses , etc.), which are widely used in daily life. It can be divided into three categories: natural latex , synthetic latex and artificial latex . Introduction Also known as latex. Generally refers to the colloidal emulsion formed by polymer particles dispersed in water. It is customary to call the aqueous dispersion of rubber particles as latex; the aqueous dispersion of resin particles as emulsion. Latex products processed from latex , also known as latex products, such as sponges, gloves , toys, hoses , etc....

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3月 4, 2024

Naphtha is one of the petroleum products , also known as chemical light oil and naphtha. It is a light oil produced from crude oil or other raw materials and used as chemical raw materials . It is mainly used as chemical raw materials. There are various distillation ranges due to different uses . China stipulates that the distillation range is the final boiling point of about 220°C. When used as a cracking raw material to produce ethylene , the 70°C to 145°C fraction is used and is called light naphtha; when the purpose is to produce aromatics or high-octane gasoline , the 70°C to 180°C fraction is used and is weighed as naphtha; When used as a solvent, it is called solvent naphtha; aromatic solvents derived from coal tar are also called heavy naphtha or solvent naphtha. According to the “Notice of the Ministry of Finance and the State Administration of Taxation on Increasing the Consumption Tax Rate of Refined Oils” , the scope of naphtha taxation includes various l...

1

3月 4, 2024

Coal tar is one of the products in the crude gas produced by the pyrolysis of coal in the coking industry. Its output accounts for about 3% to 4% of the coal loaded into the furnace. Its composition is extremely complex. In most cases, it is specially separated and purified by the coal tar industry. Take advantage of it. The product is in the form of black viscous liquid at normal temperature and pressure. Each fraction can be further processed to separate a variety of products , such as camphor balls, asphalt , plastics , pesticides , etc. basic introduction Coal tar is a black or brown viscous liquid, also known as coal tar. The odor is similar to naphthalene or aromatic hydrocarbons . It is a by-product of the carbonization of coal to produce coke and gas. The composition is complex, mainly a mixture of phenols , aromatic hydrocarbons and heterocyclic compounds . It is carcinogenic and belongs to IARC Category 1 carcinogen. It is mainly used to fractionate vari...

1

3月 4, 2024

Infrared Thermometer

The temperature measurement principle of the infrared thermometer is to convert the radiant energy of infrared rays emitted by an object into an electrical signal. The size of the infrared radiant energy corresponds to the temperature of the object itself. According to the size of the converted electrical signal, the temperature of the object can be determined. Introduction Infrared temperature measurement technology has developed to the point where it can scan and measure surfaces with thermal changes, determine its temperature distribution image, and quickly detect hidden temperature differences. This is the infrared thermal imaging camera . Infrared thermal imaging cameras were first used in the military, in the United States TI Company developed the world’s first infrared scanning reconnaissance system in 2019. Since then, infrared thermal imaging technology has been used in Western countries on aircraft, tanks, warships and other weapons. As a thermal s...

1

3月 4, 2024

Coal comes from ” Minecraft ” and is a renewable resource . It is harvested from coal ore and 1-3 obtained by killing wither skeletons. Coal ore can be mined using any pickaxe . The main use is as fuel or to make torches , and some villagers can exchange 15 coal for an emerald . get The most basic method is to mine coal ore. Mining a coal ore with a pickaxe will drop one coal, and mining it with a luck- enchanted pickaxe has a chance to drop more coal. Mining a coal ore has a 2/3 chance of dropping an experience orb. Killing wither skeletons also has a chance to drop 1-3 coal. This makes coal a renewable resource. If coal ore is mined with a Silk Touch enchanted pickaxe , a coal ore block will be dropped. Coal ore can be smelted into 1 coal, but since it can be mined directly into coal, burning coal ore into coal is far from ideal. use As a fuel for the furnace, coal is a very efficient item. One coal can smelt 8 units of items. &n...

2

3月 3, 2024

Natural sand is formed by natural conditions (mainly rock weathering ). Rock particles with a particle size of less than 5 mm include natural sea sand , lake sand, river sand or gravel sand (that is, minerals are naturally split into fine sand particles). product definition According to the ” Import and Export Tariff of the People’s Republic of China (2020) ” and the ” Commodity and Item Notes of the Import and Export Tariff (2017)”, except for metallic ores with commercial extraction value which are classified in Chapter 26, heading 25.05 includes various Natural sea sand, lake sand, river sand or gravel sand (i.e. minerals naturally broken down into fine sand grains), but excluding sand and powder produced artificially (for example, by crushing) (classified in heading 25.17 or classified as related stone materials) ). Classification and main uses Silica sand and quartz sand Silica sand and quartz sand are used in the c...

1

3月 3, 2024

aluminum silicate

Aluminum silicate is a kind of silicate with the chemical formula Al 2 SiO 5 . Since the structures of most silicates are very complex, they are often not written in the form of salts but in the form of the respective oxides of the metals. Therefore, aluminum silicate is often called Written as Al 2 O 3 ·SiO 2 . The density of aluminum silicate is 2.8 to 2.9 grams/cubic centimeter, and its refractive index is 1.56. Its Mohs hardness is related to the type of ore and moisture content, ranging from 4.5 to 7.5. Aluminum silicate powder is often used as fireproofing material , for example in the glass industry for building glass kilns. Introduction Aluminum silicate: Made from hard clay clinker as raw material, it is produced through resistance or electric arc furnace melting and injection fiber forming processes. Aluminum silicate is an aluminum silicate, appearance: colorless crystals. Dissolution: Insoluble in water. characteristic Low thermal conductivity, ...

1

3月 1, 2024

Calcium powder, commonly known as limestone and stone powder , is mainly composed of calcium carbonate , which is weakly alkaline , difficult to dissolve in water, and soluble in acid. Calcium powder distribution It is a common substance on the earth and is found in rocks such as aragonite , calcite , chalk, limestone, marble, and travertine. It is also the main component of animal bones or shells. Calcium powder classification Calcium powder can be divided into: heavy calcium powder, light calcium powder , active calcium powder , flue gas desulfurization calcium powder, ultrafine calcium carbonate , etc. Heavy calcium powder The shape of heavy calcium carbonate is irregular, its particle size varies greatly, and the particles have certain edges and corners, the surface is rough, the particle size distribution is wide, the particle size is large, and the average particle size is generally 1~10 μm . Heavy calcium carbonate is divided into: coar...

1

3月 10, 2024

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