Advanced ceramic high-density polyethylene resins can be used to mold plastic products by injection, extrusion, blow molding and rotational molding. Various types of containers, industrial accessories, medical supplies, toys, shells, bottle stoppers and protective covers can be molded by injection molding. Various hollow containers and ultra-thin films can be formed by blow molding. Extrusion can be used to form pipes, stretch strips, straps, monofilaments, wire and cable sheaths, etc.
In addition, it can also be used to form decorative panels, shutters, synthetic wood, synthetic paper, synthetic film and molded calcium plastic products. Keep away from fire and heat insulation during storage. The warehouse should be kept dry and tidy. It is strictly forbidden to mix in any impurities, sun and rain. Transport should be stored in clean, dry, covered carriages or cabins, and no sharp objects such as iron nails. Mixed transportation with flammable aromatic hydrocarbons, halogenated hydrocarbons and other organic solvents is strictly prohibited. For example, the four-liter barrel of mineral water from Nongfu Spring is this material. Sic Ceramic is the fastest growing part of the plastic material warehouse recycling market. This is mainly due to its easy reprocessing, minimal degradation characteristics and its large number of applications for packaging purposes. The main recycling is to reprocess 25% of recycled materials, such as post-consumer recyclables (PCR), with pure HDPE to make bottles that are not in contact with food.
In this process, the polymerization solvent is n-hexane, and the catalyst is a high-activity zN catalyst. After mixing ethylene and hydrogen, it enters the first reactor Sic Ceramic and is mixed with the catalyst to cause polymerization. The polymer in the reactor is suspended in hexane as a slurry. The polymerization temperature is about 80℃ and the polymerization pressure is less than 10 bar. This process can produce products with a density ranging from 0.942 to 0.965 g/cm3, a melt index ranging from 0.2 to 80, and the comonomers are propylene and 1-butene. Traditional HDPE and bimodal HDPE, high-density pipes have excellent performance and are suitable for making pressure pipes up to PE100+. The characteristics of the continuous polymerization process of the slurry tank reactor are: low operating pressure and operating temperature; dual tank reactors can produce unimodal and bimodal products in different forms in parallel and in series; process flexibility is high and product brand conversion Fast, low requirements for raw material purity; comonomers use propylene, 1-butene; use hexane as solvent, simple recovery unit. The characteristic of this process is that the polymerization is carried out in an inert hydrocarbon diluent. The process flow Sic Ceramic is as follows: the polymerized ethylene (99.9% ethylene, 0.1% ethane) is sent to the dryer, and then enters the tank reactor together with the circulating diluent composed of n-hexane. The catalyst adopts the carrier containing titanium, manganese, and triethyl Base aluminum is the brand of co-catalyst. A small amount of hydrogen is added to control the molecular weight. Polyethylene particles are formed by the polymerization reaction. The reaction temperature is 90℃ and the pressure is 1.8MPa. The reaction can be carried out in two polymerization tanks in two steps. The production concentration is 34% (mass fraction). The monomer conversion rate can reach 97%.
How to recycle ceramics?
2021 01/21