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Discuss the value of the existence of sand and dust test chamber machinery and equipment
Time of Update: 2022-10-19
At the manufacturing level, people use the sand and dust test chamber machinery and equipment to simulate the natural environment of dust, carry out anti-fouling and anti-fouling experiments on goods, and improve the service life and economic benefits of goods.
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Study on Synthesis of Polyester Resin for Ultra Weather Resistant Powder Coatings Cured by Hydroxyalkylamide System at Low Temperature
Time of Update: 2022-04-16
By studying the effect of epoxy value and dosage of acrylic prepolymer on the properties of modified polyester, the effect of acid hydrolyzing agent on the properties of polyester was investigated, in order to prepare suitable New polyester resin for low temperature curing ultra-weather resistant powder coatings in Primid system .
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Soil and sediments. Determination of dioxins. Isotope dilution high resolution gas chromatography-high resolution mass spectrometry (3
Time of Update: 2022-02-25
7. Operation requirementsThe sample pre-processing and instrument operators must be trained, and the extraction of the internal standard recovery of the blank experiment reaches the standard specified range and the operation is stable before the sample pre-processing; the instrument operator needs to have a comprehensive understanding of multiple instruments and master skilled manual tuning , The abnormal condition of the instrument can be judged by gas chromatography and mass spectrometry .
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Hundreds of billions of gas storage investment market will start
Time of Update: 2022-02-17
During the two sessions this year, He Lifeng, the head of the National Development and Reform Commission, said that China will steadily advance the construction of storage and gas supply capacity and pipeline network in accordance with the principles of marketization and rule of law .
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Compressed gas and liquefied gas (1
Time of Update: 2022-02-06
(2) Non-combustible and non-toxic gasRefers to non-toxic non-flammable gas at 20 ℃, not lower than the vapor pressure of 280kPa or frozen liquid transport noncombustible toxic gases, such as nitrogen, argon, carbon dioxide , oxygen, combustion-supporting gas, such as compressed air .
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Russian Prime Minister: Russia will restrict nitrogen fertilizer exports for 6 months
Time of Update: 2021-11-11
Mishustin said: "The increase in natural gas prices has brought a series of negative effects on the global market, which may involve Russia .
Export Mishustin said: "The increase in natural gas prices has brought a series of negative effects on the global market, which may involve Russia .
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Jiangsu closed 750 outdated chemical companies this year and rectified 100,000 "scattered and polluted" companies
Time of Update: 2021-07-09
This year, Jiangsu Province will adhere to the goal of "high-quality ecological environment", take the "263" special action as the starting point, and ensure the implementation of environmental protection "Party and government have the same responsibility", focusing on the three major battles of gas, water and soil control.
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Guangzhou Petrochemical's research and optimization of nitrogen consumption decreased by nearly 30% month-on-month
Time of Update: 2021-06-06
After the 70,000 sulphur plant was put into operation, the desulfurization zone combined with the operation capacity of the three sets of equipment to carry out research and optimization with the theme of reducing nitrogen consumption, which effectively reduced the nitrogen consumption.
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Development of epoxy resin and curing agent for heavy-duty anticorrosive powder coatings
Time of Update: 2020-10-04
(3) The factors that affect the synthesis of epoxy resin are: the composition of line phenolic resin, the ratio of raw materials, the reaction temperature and time, and the factors affecting the properties of curing agents are: the composition and molecular weight of high molecular end hydroxyl compounds, the amount of anion catalytic curing agent.
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Another batch of drugs into the OTC majority fear "no chance" of health care catalog
Time of Update: 2020-07-23
On 8 July , the State Drug Administration issued a circular stating that, in accordance with the provisions of the Measures for the Classification of Prescription and Over-The-Prescription Drugs (Tria
