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Thermoplastics
Thermoplastics are a type of plastic that is plastic at a certain temperature, solidifies after cooling, and can repeat this process. The molecular structure is characterized by linear polymer compounds. Generally, they do not have active groups and do not undergo linear molecular cross-linking when heated. Waste products can be recycled and reprocessed into new…
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Medium Density Polyethylene (MDPE)
The English abbreviation is MDPE (Medium density polyethylene) Medium density polyethylene (MDPE) is made by copolymerizing alpha olefins during the synthesis process to control the density. R&D Experience In 1970, the United States produced it by slurry method, and its production and synthesis process adopted the LLDPE method. Alpha olefins commonly used are propylene, 1-butene,…
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Engineering Plastics
Engineering plastics can be used as engineering materials and as plastics to replace metals in the manufacture of machine parts, etc. Engineering plastics have excellent comprehensive properties, including high rigidity, low creep, high mechanical strength, good heat resistance, and good electrical insulation. They can be used for a long time in harsh chemical and physical…
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Synthetic Resin
Synthetic resin is a type of artificially synthesized high molecular weight compound that has or exceeds the inherent properties of natural resins. ASTM D883-65T defines synthetic resin as an organic substance with an unrestricted molecular weight but often a high molecular weight solid, semi-solid or pseudo (quasi) solid, which has a tendency to flow when…
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Urea-Formaldehyde Resin (UF)
Urea-formaldehyde resin (UF) is the polycondensation of urea and formaldehyde under the action of a catalyst (alkaline or acidic catalyst) to form an initial urea-formaldehyde resin, and then forms an insoluble and infusible final phase under the action of a curing agent or additive. Thermosetting resin. Cured urea-formaldehyde resin is lighter in color than phenolic…
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Phenolic Plastic
Phenolic plastics, commonly known as Bakelite, are a hard and brittle thermosetting plastic. Plastics based on phenolic resin are generally called phenolic plastics. They are the most important type of thermosetting plastics and are widely used as electrical insulation materials, furniture parts, daily necessities, handicrafts, etc. Introduction Phenolic plastic, commonly known as Bakelite, was invented…
