What is the acrylic material, environmental protection?
Acrylic, also known as PMMA or Acrylic, from English acrylic (acrylic plastic). Chemical name is polymethyl methacrylate, is an important early development of plastic polymer materials, with good transparency, chemical stability and weather resistance, easy to dye, easy processing, beautiful appearance, in the construction industry Has a wide range of applications. Plexiglass products can usually be divided into cast, extruded and molded.
(A) use
Acrylic products are acrylic, acrylic plastic, acrylic light boxes, signs, acrylic bathtub, acrylic artificial marble, acrylic resin, acrylic (latex) paint, acrylic adhesive, and so on a wide range of products. Acrylic products, which are common to people, are made from acrylic raw materials such as acrylic pellets, plates or resins, and are assembled with a variety of different materials and functional parts. As for the general often heard of acrylic fiber, acrylic cotton, acrylic yarn, acrylic nylon, etc., refers to the polymerization of acrylic fiber from the man-made, and acrylic products are not associated. Among them, it is often said that the acrylic plate is polymethyl methacrylate Polymeric Methyl Methacrylate (PMMA) sheet, which is from the "methyl methacrylate monomer Methyl Methacrylate (MMA)" polymerization. Or by the acrylic pellets extruded through the squeeze plate machine. Past board commonly known as plexiglass. Acrylic from English acrylic, meaning the organic compounds made by the MMA PMMA board, its transparent and transparent as glass in general. Due to all the transparent plastic such as PS, PC, or by the poor recovery of MMA made of the plate are collectively referred to as plexiglass. For the sake of segmentation, the PMMA board made of high quality pure material MMA will be called with acrylic plate, and is separated from the general plexiglass plate.
(B) characteristics
1, with a crystal-like transparency, light transmission rate of 92% or more, soft light, clear vision, with the dye color of acrylic and have a good color effect.
2, the acrylic plate has excellent weather resistance, high surface hardness and surface gloss, and better high temperature performance.
3, the acrylic board has a good processing performance, either the use of thermoforming, you can also use the mechanical processing.
4, transparent acrylic sheet with glass can be compared to the light transmittance, but the density of only half of the glass. In addition, it is not as fragile as the glass, even if the damage, it does not like the formation of sharp pieces of glass.
5, acrylic wear resistance and aluminum close to the stability of good, resistant to a variety of chemical corrosion.
6, the acrylic plate has a good printability and spray coating, the use of appropriate printing and spraying process, you can give acrylic products ideal surface decoration effect.
7, Flammability: non-spontaneous combustion but is flammable, do not have self-extinguishing.
(C) environmental performance
Acrylic material is toxic: First, the acrylic material itself is not toxic, and its own scattered taste on the human body is also non-toxic. But in a particular environment, the acrylic will be "toxic" because the melting point of acrylic at 130-140 ° C, at room temperature, the acrylic is not a chemical reaction, but at high temperatures, the acrylic reaction will produce toxic gases The Such as high-temperature combustion of acrylic, acrylic will emit toxic substances. Another example is the use of laser engraving cutting acrylic processing when the distribution of strong taste, often smell will make people dizzy, these other is toxic but not highly toxic, it is recommended acrylic products factory in the laser engraved acrylic sheet is to open the exhaust fan, so as not to too much staff inhalation These gases.
Acrylic powder is toxic: Acrylic dust with ordinary plastic, is a solid hazardous substances, the human body has a common hazard of dust: erosion of mucosal tissue, long-term cause pneumonia, emphysema, and even lung cancer, damage to glasses, from the skin into the human body , So the acrylic dust is toxic. Acrylic processing production process to bring a mask, especially for acrylic polishing.
Adhesive Acrylic glue is toxic: Acrylic bonding generally uses a new generation of plexiglass glue, its chemical composition mainly includes glacial acetic acid, chloroform, phenol. In addition to glacial acetic acid is low toxicity, chloroform and phenol are all highly toxic substances, we can see that acrylic glue is toxic, and great harm to the human body. But an acrylic finished product using acrylic glue very little water, so bonding splicing good acrylic products on the human body toxicity is also very small.
Bad quality counterfeit acrylic is toxic: the real high-quality acrylic non-toxic, but many domestic acrylic sheet manufacturers in order to save costs, the use of re-processing of plastic waste materials re-processing (produced plate called PS board, not really acrylic board), these poor quality There are other ingredients in the plate, such as resin, such as a class, so that the process will form a volatile. Has become a harmful gas.
