Phenolic plastic, also known as bakelite or bakelite, is the oldest type of thermosetting plastic. Bakelite materials have been produced since 1909. Over the years, its output has continued to rise and its applications have continued to expand. It is inseparable from its excellent performance, abundant raw material sources, easy processing and molding, and low prices. In this article, I will talk to you about the advantages of bakelite products.
The raw materials used to make bakelite products are mainly phenol and formaldehyde. They use alkali or acid as a catalyst to carry out polycondensation reaction to form thermosetting phenolic resin, and then mix with appropriate amount of fillers, accelerators, colorants, lubricants, etc. to form molding powder, and press molding under the conditions of heat and pressure . Once compressed, it changes from a long-chain chemical structure to a network-like chemical structure, which will not be deformed after heating. Therefore, bakelite products generally have good heat and cold resistance, high surface hardness, and can withstand friction. Bakelite also has good insulation, is not easy to transfer heat and conduct electricity, and is often used to make insulating materials. It also has good corrosion resistance, is not prone to aging and deterioration, and has strong resistance to various solvents and oils. The phone casing, bottle cap, hair dryer, and electric knife handle can be made of bakelite.
Of course, as a material, there are advantages and disadvantages. The color of bakelite is relatively deep, not gorgeous, and it has low toughness and high water absorption. It is necessary to prevent knocking, knocking, and dampness during use.
| Feedback |
|
|