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Comparison of LLDPE and LDPE .
Linear low density polyethylene, structurally different from general low density polyethylene, because there are no long chain branches. The linearity of LLDPE depends on the different production and processing processes of LLDPE and LDPE. LLDPE is usually formed by the copolymerization of ethylene and higher alpha olefins such as butene, hexene or octene at lower temperature and pressure. The LLDPE polymer produced by the copolymerization process has a narrower molecular weight distribution than general LDPE, and at the same time has a linear structure that makes it have different rheological properties. melt flow properties The melt flow characteristics of LLDPE are adapted to the requirements of the new process, especially the film extrusion process, which can produce high quality LL... -
Jinan Refinery has successfully developed a special material for geotextile polypropylene .
Recently, Jinan Refining and Chemical Company successfully developed YU18D, a special material for geotextile polypropylene (PP), which is used as the raw material for the world’s first 6-meter ultra-wide PP filament geotextile production line, which can replace similar imported products. It is understood that the ultra-wide PP filament geotextile is resistant to acid and alkali corrosion, and has high tear strength and tensile strength. The construction technology and the reduction of construction costs are mainly used in key areas of national economy and people’s livelihood such as water conservancy and hydropower, aerospace, sponge city and so on. At present, domestic ultra-wide geotextile PP raw materials rely on a relatively high proportion of imports. To this end, Jina... -
100,000 balloons released! Is it 100% degradable?
On July 1, along with the cheers at the end of the 100th anniversary celebration of the Communist Party of China, 100,000 colorful balloons rose into the air, forming a spectacular color curtain wall. These balloons were opened by 600 students from the Beijing Police Academy from 100 balloon cages at the same time. The balloons are filled with helium gas and are made of 100% degradable materials. According to Kong Xianfei, the person in charge of the balloon release of the Square Activities Department, the first condition for a successful balloon release is the ball skin that meets the requirements. The balloon that was finally selected is made of pure natural latex. It will explode when it rises to a certain height, and it will degrade 100% after falling into the soil for a week, so th... -
Introduction about Wanhua PVC Resin .
Today let me introduce more about China’s big PVC brand: Wanhua. Its full name is Wanhua Chemical Co., Ltd, which is located in Shandong Province in Eastern China, it is 1 hours distance by airplane from Shanghai. Shandong is an important central city along the coast of China, a coastal resort and tourist city, and an international port city. Wanhua Chemcial was established in 1998, and went to the stock market in 2001, now it owns around 6 production base and factories, and more than 10 subsidiary companies, 29th in the global chemical industry. With more than 20 years high speed development, this giant manufacturer has formed following product series: 100 thousand tons capacity PVC resin, 400 thousand tons PU, 450,000 tons LLDPE, 350,000 tons HDPE. If you want to talk about China’s PV... -
After the National Day, PVC prices have risen .
Before the National Day holiday, under the influence of poor economic recovery, weak market transaction atmosphere and unstable demand, the PVC market did not improve significantly. Although the price rebounded, it still remained at a low level and fluctuated. After the holiday, the PVC futures market is temporarily closed, and the PVC spot market is mainly based on its own factors. Therefore, supported by factors such as the rise in the price of raw calcium carbide and the uneven arrival of goods in the region under the restriction of logistics and transportation, the price of the PVC market has continued to rise, with a daily increase. In 50-100 yuan / ton. Traders’ shipping prices have been raised, and the actual transaction can be negotiated. However, the downstream constructi... -
Analysis of the recent domestic PVC export market trend.
According to customs statistics, in August 2022, my country’s export volume of PVC pure powder decreased by 26.51% month-on-month and increased by 88.68% year-on-year; from January to August, my country exported a total of 1.549 million tons of PVC pure powder, an increase of 25.6% compared with the same period last year. In September, the performance of my country’s PVC export market was average, and the overall market operation was weak. The specific performance and analysis are as follows. Ethylene-based PVC exporters: In September, the export price of ethylene-based PVC in East China was around US$820-850/ton FOB. After the company entered the middle of the year, it began to close externally. Some production units faced maintenance, and the supply of PVC in the region de... -
Chemdo launches a new product —— Caustic Soda ！
Recently，Chemdo decided to launch a new product —— Caustic Soda .Caustic Soda is a strong alkali with strong corrosiveness, generally in the form of flakes or blocks, easily soluble in water (exothermic when dissolved in water) and forms an alkaline solution, and deliquescent Sexually, it is easy to absorb water vapor (deliquescent) and carbon dioxide (deterioration) in the air, and itcan be added with hydrochloric acid to check whether it is deteriorated. -
The output of BOPP film continues to increase, and the industry has great potential for development.
Biaxially oriented polypropylene film (BOPP film for short) is an excellent transparent flexible packaging material. Biaxially oriented polypropylene film has the advantages of high physical and mechanical strength, light weight, non-toxicity, moisture resistance, wide application range and stable performance. According to different uses, biaxially oriented polypropylene film can be divided into heat sealing film, label film, matte film, ordinary film and capacitor film. Polypropylene is an important raw material for biaxially oriented polypropylene film. Polypropylene is a thermoplastic synthetic resin with excellent performance. It has the advantages of good dimensional stability, high heat resistance and good electrical insulation, and is in great demand in the packaging field. In 2... -
Xtep launches PLA T-shirt .
On June 3, 2021, Xtep released a new environmentally friendly product-polylactic acid T-shirt in Xiamen. Clothes made of polylactic acid fibers can be naturally degraded within one year when buried in a specific environment. Replacing plastic chemical fiber with polylactic acid can reduce the harm to the environment from the source. It is understood that Xtep has established an enterprise-level technology platform – “Xtep Environmental Protection Technology Platform”. The platform promotes environmental protection in the whole chain from the three dimensions of “environmental protection of materials”, “environmental protection of production” and “environmental protection of consumption”, and has become the main driving force of the ... -
Global PP market faces multiple challenges.
Recently, market participants predicted that the supply and demand fundamentals of the global polypropylene (PP) market will encounter many challenges in the second half of 2022, mainly including the new crown pneumonia epidemic in Asia, the start of the hurricane season in the Americas, and the conflict between Russia and Ukraine. In addition, the commissioning of new production capacity in Asia may also affect the PP market structure. Asia’s PP oversupply concerns.Market participants from S&P Global said that due to the oversupply of polypropylene resin in the Asian market, production capacity will continue to expand in the second half of 2022 and beyond, and the epidemic is still affecting demand. The Asian PP market may face challenges. For the East Asian market, S&P ... -
Starbucks launches biodegradable ‘grounds tube’ made of PLA and coffee grounds.
Starting from April 22, Starbucks will launch straws made of coffee grounds as raw materials in more than 850 stores in Shanghai, calling it “grass straws”, and plans to gradually cover stores nationwide within the year. According to Starbucks, the “residue tube” is a bio-explainable straw made of PLA (polylactic acid) and coffee grounds, which degrades more than 90% within 4 months. The coffee grounds used in the straw are all extracted from Starbucks’ own coffee. use. The “slag tube” is dedicated to cold drinks such as Frappuccinos, while hot drinks have their own ready-to-drink lids, which do not require straws. -
Alpha-olefins, polyalpha-olefins, metallocene polyethylene!
On September 13, CNOOC and Shell Huizhou Phase III Ethylene Project (referred to as Phase III Ethylene Project) signed a “cloud contract” in China and the United Kingdom. CNOOC and Shell respectively signed contracts with CNOOC Petrochemical Engineering Co., Ltd., Shell Nanhai Private Co., Ltd. and Shell (China) Co., Ltd. signed three agreements: Construction Service Agreement (CSA), Technology License Agreement (TLA) and Cost Recovery Agreement (CRA), marking the start of the overall design phase of the Phase III ethylene project. Zhou Liwei, member of the CNOOC Party Group, Deputy General Manager and Secretary of the Party Committee and Chairman of CNOOC Refinery, and Hai Bo, member of the Executive Committee of Shell Group and President of Downstream Business, attended an...