A brief history of plexiglass (acrylic) As early as the 1920s, Rohm and Hahn first invented the method of polymerizing MMA into acrylic plates, which was later called "Oroglas/Plexiglas". However, the company failed to find a more economical process route to produce MMA, so acrylic board was not widely used at that time. 193 1 year, scientists from ICI company invented the acetone cyanohydrin method to produce MMA, which greatly reduced the cost of MMA and popularized acrylic boards. At the same time, ICI also successfully developed the acrylic board for fighter cockpit cover, and then ICI built the world's largest acrylic board factory in Britain.
Acrylic and plexiglass "plexiglass" comes from the brand name "Oroglas", which means "plexiglass". As mentioned earlier, "Oroglas" is a kind of PMMA plate, that is, acrylic plate. Some people think that transparent plastic board is plexiglass. In order to avoid confusion and mistakes, most PMMA plates are now called acrylic plates, and all kinds of PMMA materials are called acrylic or acrylic in cages.
Types of plexiglass (acrylic board) Acrylic board (acrylic board) can be divided into cast-plastic sheet and extruded sheet according to polymerization mode, in which cast-plastic sheet has higher molecular weight, greater rigidity and stronger crack resistance, and is more suitable for processing large-size signs. In addition, foundry workers are more suitable for producing small batches of plates with different colors. However, the extruded board has low molecular weight and high flexibility, which is suitable for vacuum suction molding. The extruder can better control the thickness of the plate and produce a large number of monochromatic plates.
Acrylic plexiglass board can be divided into pure transparent board, color transparent board, translucent board (such as milky white board) and opaque board (such as color board) according to transmittance. According to the surface gloss, it can be divided into high-gloss board, mercerized board and matte board (also called sanding board); According to the characteristics, acrylic board can also be divided into ordinary board, anti-? Board, ultraviolet protection board, flame retardant board and high wear-resistant board, etc.
Acrylic is the best new material for making sanitary ware after ceramics. As a special plexiglass, acrylic can also be used for airplane windshields, which have been used in harsh environments for decades.
Compared with traditional ceramic materials, acrylic has the following advantages in addition to unparalleled high brightness: good toughness and not easy to be damaged; Strong recovery, as long as you dip in soft foam toothpaste, you can wipe the sanitary ware; Soft texture, no icy feeling in winter; Bright colors can satisfy the individual pursuit of different tastes. The basin, bathtub and toilet made of acrylic are not only exquisite and durable, but also environmentally friendly, and their radiation level is almost the same as that of human bones. Acrylic bathroom first appeared in the United States, and now it has occupied more than 70% of the entire international market.
Due to the difficulty and high cost of acrylic production, there are many low-quality and low-cost substitutes on the market. These substitutes, also called "acrylic", are actually ordinary organic boards or composite boards (also called sandwich boards). Ordinary plexiglass plate is cast with ordinary plexiglass cracking material and pigment, which has low surface hardness and is easy to fade, and the polishing effect is poor after polishing with fine sand. The composite board has only a thin layer of acrylic with ABS plastic in the middle, which is easy to be layered due to thermal expansion and cold contraction in use. True and false acrylic can be identified from the subtle color difference and polishing effect of the plate section.
When many customers customize authorization cards, franchise cards, badges and plaques, especially product display stands, display stands, POP display boards, plexiglass products and acrylic, they often make up their minds on the selection of materials, and they can't tell the difference and material properties between acrylic and plexiglass, for fear of affecting the beauty and quality of products.
1, material properties: acrylic, also known as acrylic. Strictly speaking, acrylic can be divided into three materials: domestic, joint venture and imported, so we won't talk about some chemical element terms from its material element composition. It is often used for high-grade and exquisite display items, such as the "Zhou Shengsheng" jewelry display table produced by our factory. Plexiglass, often referring to some simple and clear application technologies, is very thin and is mostly used in light boxes and small panel displays, such as plexiglass data boxes.
2, sensory distinction: acrylic material, transparency is very clear, without any impurities, commonly known as "imitation crystal", feel and texture are very good, giving people a high-end elegant look and feel, because its transparency is pure natural colorless and transparent, mostly used to make noble crafts and high-end product display tables. Plexiglass is generally transparent. Because many people don't know enough about it, they often compare it with PVC and plastic board, which shows its texture. Most plexiglass is slightly yellow.
3. Specifications and thickness: Acrylic is mostly heavy, with a thickness above 0.5 mm ... Plexiglass is usually light and thin.
4. Popular applications: customers often ask about "Crystal brand". The crystal here does not refer to rock crystal, but is another name of authorized brand and franchise brand of acrylic material. Plexiglass is commonly known as "Plexiglass Screen Printing", "Plexiglass Plate" and "Plexiglass Publicity Desk".
Note: Usually in real life, many people regard acrylic and plexiglass as one substance. The above introduction is not about the analysis of professional materials of acrylic and plexiglass, and does not contain any relevant professional academic terms.