Abstract 1. Notice on holding the fourth executive director (expansion) meeting of the 5th Superhard Materials Branch (view original) 2. The new version of the coated abrasive net is officially launched. Read the new function (View original) March 27, China The new version of the coated abrasive net was officially launched. New version of the network...
1. Notice on Holding the Fourth Executive Director (Extended) Meeting of the 5th Superhard Materials Branch ( View Original ) 
On March 27th, the new version of China's coated abrasives network was officially launched. What's new in the new website? Xiaobian takes you deeper.
One-click collection to create a personal information base
In the past, if you saw the content of interest on the Internet, or it was a very important technical information, you may not find it because you forgot to save it and look it again next time.
Therefore, in order to make it easier for users to access information, the most familiar Chinese coated abrasive net has deliberately designed the “one-click collection†function. As long as it is the content you are interested in, it is a little easier, any time, anywhere. You can continue to browse easily.
Moreover, if the user keeps the habit of collecting information for many years, the Chinese coated abrasive net will become your exclusive network information resource library. Whether it is industry news or investment purchase information, will you have a sense of accomplishment when you look at your own information resource library for one year?
3, diamond selection machine family ushered in the newborn to successfully solve the problem of fine-grained sorting ( view original )
Synthetic diamond abrasives are synthesized under high temperature and high pressure conditions. The pressure and temperature conditions in the high pressure chamber are not completely consistent, and the diamonds grown are not the same, so their performance is also different. Studies have shown that the strength and fracture properties of diamond abrasive grains mainly depend on their crystal form and its regularity, internal defects and impurity content and distribution.
The purpose of the classification and sorting is to mix the synthetic diamond abrasives with large difference in particle size and shape under high temperature and ultra-high pressure conditions, and to make them precise by particle size and crystal by means of screening and different sorting methods. The shape and the degree and integrity of the rules as well as the internal defects and impurity content and even the surface traits are strictly classified to achieve the goal of making their designated products more consistent and performance stable; to ensure the long-term stability of product quality and performance, try to Meet the various needs of different users.
The history of direct mass production of micron-sized diamonds by presses in China is not long. The conventional fine-grained diamonds (micron-scale) are obtained by synthesis after press, and the shape selection cannot be carried out by mechanical means. Traditionally, the sedimentation method is mainly used for shape selection. The method has a long time and a large area, and the precision of the produced diamond particles is difficult to meet the requirements of the industry standard, and the application range is limited. In addition, the diamond selection machine currently on the market is not ideal for selecting in a humid environment.
4. Announcement of Yu Diamond on obtaining government subsidies ( view original )
The company and all members of the board of directors guarantee the truthfulness, accuracy and completeness of the information disclosure, and there are no false records, misleading statements or major omissions.
Zhengzhou Huajing Diamond Co., Ltd. (hereinafter referred to as “the companyâ€) recently received subsidies from the Zhengzhou High-tech Industrial Development Zone Management Committee and the Zhengzhou New Materials Industrial Park Management Committee, with a total amount of RMB 10,543,815.00. Details are as follows:
I. Obtaining government subsidies 1. According to the “Zhengzhou High-tech Industrial Development Zone Management Committee's Decision on Recognizing 2016 High-growth Enterprises†(Zheng Kai Guan [2017] No. 9), the company closed on March 27, 2017. The amount of the award to the payment of 400,000.00 yuan;
2. According to the Notice of Zhengzhou New Material Industrial Park on Giving Zhengzhou Huajing Diamond Co., Ltd. Project Construction Investment Award and Related Subsidy (Zheng Xincai [2017] No.6), the company received on March 28, 2017 The project construction investment incentive fund of Zhengzhou New Material Industrial Park Management Committee is 10,000,000.00 yuan, the intellectual property industrialization subsidy fund is 140,000.00 yuan, and the management system certification financial subsidy fund is 3,815.00 yuan.
5, Sifangda: enjoy the oil cycle recovery cycle ( view original )
In 2017, oil prices bottomed out, rig activity increased, and demand for petroleum composites rebounded.
Petroleum composite sheets are mainly used for oil drilling, and their demand is closely related to rig activity and oil price. In 2017, OPEC cut production, oil prices gradually recovered, while the cost of shale oil in North America decreased significantly, the economy improved, and the activity of rigs in North America and the world recovered. On March 24, the number of active rigs in North America increased by 74% year-on-year. In February, global rig activity increased by 15% year-on-year. In this context, we expect the market size of petroleum composites to rise from approximately US$400 million in 2016 to nearly US$700 million in 2018, with an annual growth rate of over 30%.
The company's market development has been fruitful and the foreign market has steadily advanced. The oil composite film market is basically occupied by overseas companies, and the market share of Sifangda and other enterprises is only single digit.
With the improvement of the company's product performance and the emergence of cost-effective advantages, the company's products have been recognized by the oil service drill bit enterprises, and the market share is expected to increase.
6, Mei Chang new material: practicing internal strength to meet the development of electroplating diamond line industry ( view original )
“The company was registered in July 2015. Since the production started in February 2016, the production line has not stopped the expansion of production capacity. The electroplating diamond wire produced has been in short supply.†Wu Ying, Chairman of Yangling Meichang New Materials Co., Ltd. Said, "The company built production lines last year and put it into production. In the same year, it achieved operating income of 183 million yuan and net profit of 95 million yuan. This year our production capacity is increasing every month, reaching 800,000 km/month by the end of the third quarter."
The electroplating diamond wire produced by Meichang New Materials is currently mainly used in the field of monocrystalline silicon and polycrystalline silicon in the photovoltaic industry. “Our competitors are Japanese companies.†Wu Ying said, “Only by staying ahead in technology, we can surpass them in price/performance ratio.â€
7, Shi Diwei, Zhengzhou University: functional application of artificial diamonds ( view original )
Brilliant diamonds are actually natural diamonds that have been cut and polished. Natural diamonds are particularly expensive due to their scarcity in nature. The formation conditions of diamond are also very demanding. It is formed by transforming graphite into metastable diamond under high temperature and high pressure conditions during crustal movement. The arrangement of carbon atoms in the crystal structure of diamond is a regular tetrahedral structure formed by covalent bond of CC and infinitely expands in space. This special structure makes it the hardest substance in nature today. The high hardness characteristics make it widely used in the industrial abrasive industry, but natural diamonds are scarce, so the synthetic technology is quite critical. In the middle of the last century, the technicians of Zhengzhou Abrasives Grinding Research Institute used high temperature and high pressure technology to synthesize China's first synthetic diamond in China's self-developed six-face press, which also marked the opening of a brand new The era of carbon materials.
In the early days of the creation of artificial diamonds, they were widely used in the preparation of abrasive tools. Compared with ordinary abrasive tools, the birth of superhard abrasives has greatly improved the efficiency of industrial production. As the research progresses, other excellent properties of diamond are gradually known.
8. Study on compression deformation of liquid phase sintered porous silicon carbide ceramics ( view original )
The porous silicon carbide ceramic is prepared by a liquid phase sintering method using an additive of 1 wt% Al2O3- 1 wt% Y2O3 at a hot pressing temperature of 1400 °C to 1900 °C. The longitudinal strain of the compression fracture increases at a higher porosity and is greater than the transverse strain. The compressive Young's modulus and strain at break depend on the direction of measurement and increase with decreasing specific surface area due to grain boundary formation. However, compressive strength and fracture energy are not very sensitive to the direction of measurement. The compressive strength of the porous silicon carbide compact increases as the crystal interface increases. According to the theoretical modeling of the relationship between the strength and the crystal interface, it can be inferred that the fracture of the crystal interface of the porous silicon carbide compact is caused by shear deformation rather than compression deformation.
9. Born with a diamond anvil "a new compound that cannot exist" ( view original )
Theoretical studies and experiments in recent years have shown that under high pressure, elements can form new compounds that are impossible in classical chemistry. The reporter learned from the Beijing High Voltage Research Center on the 30th that Li Kuo, a researcher at the center, and Chen Yue, a professor at the University of Hong Kong, first synthesized a new compound, Sn3Se4, which violates the common valence. The compound is metallic and converts to a superconductor at low temperatures and may have better physical properties. The relevant research results were published in the Physical Review Letter, the world's top academic journal published on the 28th.
As a dimension that is as important as temperature, pressure changes the structure of a substance by changing the atomic spacing and charge distribution to form a high-pressure phase with new properties. For example, scientists predict that under high pressure hydrogen will exhibit a metallic character - conductivity. In recent years, scientists have found that high pressure can also change the valence of elements. Some compounds that cannot exist under normal pressure conditions can be synthesized and stabilized under high pressure, constantly subverting our knowledge of the original chemical knowledge.
Researcher Li Kuo told the Science and Technology Daily that the Sn-Se system compound has good properties in photoelectric, thermoelectric and storage conversion. Usually, only two compounds, SnSe and SnSe2, can be observed. Then, is there any other new compound in the Sn-Se binary system?
10, trillion new material industry ecological dilemma: half of the sea half flame ( view original )
Although there is a constant increase in national policy support, the industrialization dilemma still exists. The long-term and high threshold of investment returns have also made some venture capital capital deterred, and the “small and beautiful†entrepreneurial projects are facing embarrassment.
After several years of development and the increasing support of national policies, the concept of “first-generation model first-generation materials†has changed to “first-generation material generation modelâ€, and materials have become the industry consensus.
At the spring summit of new materials technology investment held on March 29-30, the convener of the Ministry of Science and Technology “Key Specialized and Intelligent Materials Key Projectâ€, deputy chief engineer of China Iron and Steel Research and Technology Group Co., Ltd., Antai Technology Director and Chief Engineer Zhou Shaoxiong It is said that the new material has actually received rare attention at the national level.
Zhou Shaoxiong revealed that four of the six key research and development projects in the field of materials have been launched in the Ministry of Science and Technology. In addition, the “Key New Functional Materials and Devices R&D and Application†project has set up an expert committee, which will be implemented in two months. The program is expected to be released in the second half of the year.
But calmly look at the development of new materials, although many products have gone out of the laboratory for production, but still in small quantities. After overcoming the technical difficulties, the application-side problem reappeared.
Therefore, the long-term and high threshold of return on investment has also made some venture capital capital deterred, and the “small and beautiful†entrepreneurial projects are facing embarrassment.
The key products are lead containing stabilizers, which is produced in our lead salt factory, we also can supply tributyl citrate, dicumyl peroxide, diethyl sebacate, triphenyl phosphate and so on.
1. Product name:Dicumyl peroxide (DCP)
2. Applications:DCP, as an excellent organic peroxide, is mainly used as the crosslinking agents of PE, EVA resins; the vulcanizing agent of EPDM, natural rubber, nitrile rubber; the initiating agent of polymerization reaction; the curing agent of unsaturated polyester; and the conditioning agent in polypropylene melt index, etc. It is widely used in wires and cable, EPS, shoemaking, fire retardant paint and other industries.
3. Packing, storage, and transportation
(1) The internal packing of this product is PE plastic bags, and the net weight of each bag is 5 kg. The external packing is corrugated paper, and the net weight of each carton is 20 kg.
(2) The storage temperature: below 30 ℃.
(3) In the transportation, the exposure to strong sunlight and rain should be avoided;
(4) Protect it from heat, strong acid, and reducing agents in storage and transportation.
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Gemhold (SJZ) Trading Co., Ltd. , https://www.gemhold.cn