Chemical Encyclopedia_Materials Encyclopedia_Trade Encyclopedia - TDD-Global

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Gloves are hand warmth or labor protection products , and they are also used for decoration. Gloves are a very special thing. They were not originally created for practicality. Only in modern times have they become essential for thermal insulation in cold areas , or as medical antibacterial and industrial protective equipment . Gloves are divided into sewing, knitting, dipping, etc. according to the production method. But in addition to gloves in the traditional sense, today’s gloves have a deeper meaning, which is completely different from traditional gloves. This is due to the rise of online games, which has led to the emergence of overwhelming names of game equipment . Due to the large number of game players, especially compared to traditional industries, more information on gloves on the Internet is related to online game equipment. Gloves were the earliest Originated in ancient Greece . Classification Classification by production method Gloves ar...

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2024-03-10

Medical

What to do if the white bags, light-colored sofas or even the walls at home are dirty. It can’t be washed with water. It’s easy to crack. So what should I do? It seems very troublesome to find someone to clean it. Don’t worry, just use a small eraser to clean it. Bags, sofas and other leather products can be wiped with an eraser. It will not damage the surface, and the phone case can also be wiped with an eraser. There are many, many places that can be wiped with an eraser. Introduction name English-Chinese translation: 1. [rubber] The general name for vulcanized rubber . 2. [eraser] Stationery made of rubber, which can erase traces of graphite or ink. There are many types of erasers, with different shapes and colors. There are ordinary fragrant erasers, 2B , 4B, 6B and other special art erasers for painting, as well as plastic erasers , etc. principle Pencil lead is made of graphite plus clay. Graphite is soft, black in color, and ...

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2024-03-10

Resin

Coke (English: Cola) refers to a carbonated drink that is sweet, contains caffeine but does not contain ethanol . Flavors include vanilla, cinnamon, lemon, etc. The name comes from one of Coke’s early ingredients: kola nut extract. The most well-known cola brands are Coca-Cola and Pepsi-Cola . Drinking Coke is originally a consumption behavior no different from drinking other drinks. However, the rich connotation of Coke culture goes far beyond the scope of “drinking”. origin invention Coke was invented by an American pharmacist named John Pemberton. He hoped to create a medicinal mixed drink that would refresh the mind, relieve fatigue, and cure headaches . The “Coca Cola” prepared by Pemberton was originally gas-free and was mixed with cold water when drinking. It was only due to an accident that it became a carbonated drink . On the afternoon of May 8, 1886, a drunkard stumbled into Pemberton’s drug store. He sa...

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Solvent

Rubble (English: Rubble) is a small piece of broken rock with irregular size, shape, and texture . It may be caused by natural causes or caused by man-made damage. rock Rock is a solid aggregate with a stable shape composed of one or several minerals and natural glass . Rocks composed of one mineral are called monomineral rocks , such as marble composed of calcite , quartzite composed of quartz , etc.; rocks composed of several minerals are called complex mineral rocks , such as granite composed of quartz, feldspar, mica and other minerals. , gabbro is composed of basic plagioclase and pyroxene , etc. Liquids without a certain shape such as oil , gases such as natural gas , and loose sand and mud are not rocks. Rock is one of the materials that make up the earth’s crust and is the main component of the earth’s lithosphere . Among them, feldspar is the most important rock-forming component in the earth’s crust , accounting for 60%, and quartz is t...

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Sands

River sand is a non-metallic ore produced by repeated collision and friction of natural stone under the force of water for a long time in its natural state . Its composition is relatively complex, the surface has a certain smoothness, and it is a non-metallic ore with high impurity content . River sand has smooth particles, is relatively clean, and comes from a wide range of sources; river sand has no taste, while sea sand has a salty taste. type River sand is currently divided into: river sand 4-8 mesh, river sand 8-16 mesh, river sand 10-20 mesh, river sand 20-40 mesh, river sand 40-70 mesh, river sand 70-100 mesh. contribute River sand has made outstanding contributions to the construction industry. But sea sand is the opposite. Sea sand is often mixed with shells and salt. Most sea sand contains excessive chloride ions , which will corrode the steel bars in reinforced concrete , eventually leading to the destruction of the building structure and shorten...

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2024-03-11

Sands

Industrial lubricants

Industrial lubricants have a wide range of applications, and there are many types of base oils, such as: pure mineral oil, PAO polyɑolefin synthetic oil, polyether synthetic oil, alkylbenzene oil, biodegradable lipid oil, when they become certain When making industrial lubricants, they cannot be mixed with each other. For example, after polyether synthetic oil is mixed with other industrial oils, its performance will be significantly reduced. Industrial lubricants have different additives in different applications . Hydraulic oil used outdoors must be suitable for local temperature changes, and hydraulic oil used in indoor closed environments cannot be used. In addition, the usage conditions of heavy-duty gear oil and molding oil are also different. Heavy-duty gear oil contains extreme pressure additives to ensure that it can be used in harsh environments. Molding oil is usually pure mineral oil without additives. composition Lubricating oil generally consists of ...

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2024-03-11

Lubricating

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...

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2024-03-11

Coal

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...

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2024-03-10

Powder

Titanium ore refers to minerals containing a large amount of titanium ore. The main ones utilized in China are ilmenite , rutile and titanium magnetite . Raw material characteristics Titanium is a typical lithophile element and often appears as an oxide mineral. There are more than 80 kinds of minerals containing more than 1% TiO2 in the earth’s crust, and 15 kinds have industrial value. The main ones used in China are ilmenite , rutile and titanium magnetite (Table 3.5.1). They are both primary (rock minerals) and secondary (weathered residual slope accumulation and sedimentary sand minerals ). Properties of titanium Because titanium metal is silvery white, it has a high melting point (1727°C), light specific gravity (4.5), high mechanical strength (5), low temperature resistance (resistivity is almost 0 at ultra-low temperatures), abrasion resistance, and good plasticity of titanium wire (can Thin-walled use), not easily oxidized, and highly reducib...

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2024-03-10

Titanium

High titanium slag

High Titanium Slag is commonly known as the titanium ore enrichment formed through the physical production process. The titanium ore is heated and melted by an electric furnace to melt and separate the titanium dioxide and iron in the titanium ore, which is a high-content titanium dioxide enrichment. High titanium slag is neither a waste residue nor a by-product, but a high-quality raw material for the production of titanium tetrachloride , titanium dioxide and titanium sponge products. Titanium slag is smelted from Ilmenite. status color The general state is powdery and black. The particle size is 40-200 mesh (Mesh). Supplied in powder form, the total amount of particle size between 0.425mm and 0.075mm is not less than 75%. Application areas 1. High titanium slag with a TiO 2 content greater than 90% can be used as a raw material for the production of titanium dioxide by chlorination method 2. High-titanium slag with less than 90% TiO 2 is a high-quality ...

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Titanium

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