What are the components of plexiglass products
What are the components of plexiglass processing plexiglass products? Plexiglass products are ubiquitous in our lives. Plexiglass photo frames, advertising signs made of plexiglass, signboards, daily necessities, etc. However, few people know what parts of the plexiglass products are composed of, the following Wuxi board Industry professional personnel will give you a detailed introduction.
What are the components of plexiglass products? The components of plexiglass products:
(1) synthetic resin
plexiglass products synthetic resin refers to coal, calcium carbide, petroleum, natural gas and some agricultural and sideline products as the main raw materials, pre-made Obtain low-molecular compounds (monomers) with certain synthesis conditions, and then synthesize high-molecular compounds by chemical and physical methods. The properties of this kind of organic glass products are similar to natural resins (such as rosin, amber, shellac, etc.), but the properties are superior to those of natural resins. For example: synthetic resin dentures.
The content of synthetic resin in plexiglass products accounts for 40%-100% of all the components of the plastic, which plays a role of bonding. It determines the main properties of the plastic, such as mechanical strength, hardness, and resistance. Aging, elasticity, chemical stability, photoelectricity, etc.
Plastic additives for plexiglass products The main purpose of adding additives to plastics is to improve processing performance, increase efficiency and reduce costs. Additives occupies a small proportion in plastic materials, but they have a great impact on the quality of plastic products. Different types of plexiglass product plastics require different types and amounts of additives due to different molding processing methods and use conditions. The main additives include the following categories:
plexiglass product plasticizer can increase the flexibility, extensibility, and plasticity of plastics, and reduce the flow temperature of plastics And the hardness is conducive to the molding of plexiglass products and plastic products. Commonly used are phthalic acid esters, sebacic acid esters, chlorinated paraffin and camphor. Our most common is camphor.
b, flame retardant
Plexiglass products can improve the flame retardant additives of plastics called flame retardants. Most plastics containing flame retardants have self-extinguishing properties, or slow down the burning rate. Commonly used organic glass products flame retardants include antimony oxide, aluminum and boron compounds, halides and phosphate esters, tetrachlorophthalic anhydride, and tetraophthalic anhydride.
c, antistatic agent
antistatic agent plays a role in eliminating or reducing static electricity on the surface of organic glass products and plastic products. Most antistatic agents are electrolytes, and their compatibility with synthetic resins is limited, so that they can migrate to the plastic surface of organic glass products to achieve the effect of absorbing moisture and eliminating static electricity.
We all know that plexiglass products and plastic products will fade and become brittle under the action of light, heat and oxygen during processing, storage and use. The aging phenomenon of melting and cracking. In order to delay and prevent the occurrence of aging, stabilizers must be added. The ones that are mainly used to prevent heat aging are called heat stabilizers; the ones that are mainly used to prevent the oxidative aging of organic glass products are called antioxidants; the ones that are mainly used to prevent light aging are called light stabilizers, and they are collectively called stabilizers. The most excellent plastic stabilizer today is methyl tin heat stabilizer (181 for short), which is very effective for the calendering of rigid polyethylene (PVC), the extrusion of plexiglass products, injection and blow molding. Because of its high safety, it is especially used for food packaging and high-definition rigid polyethylene products. At the same time, it is also widely used in plastic doors and windows, water pipes, and decorative materials to replace other highly toxic plastics. Heat stabilizers. It has been widely used in the United States, Europe, and Japan. In recent years, 181 methyl tin heat stabilizer has been widely used in my country.
Plexiglass product lubricant is a substance added to improve the mold release during plastic heating and improve the surface finish of the product. Commonly used lubricants include: stearic acid and its salts, paraffin wax, synthetic wax, etc.
f, blowing agent
plexiglass product plastic blowing agent is a kind of low molecular organic matter that can be vaporized at a certain temperature, such as dichlorodifluoromethane; or heated Organic compounds that decompose into gas at times. These gases remain in the plastic matrix to form a foamed plastic with many fine foam structures. Commonly used organic glass products include azo compounds and nitroso compounds.
g, coloring agent
plexiglass product coloring agent is used for the coloring of plastics. It is mainly used for beautification and modification. About 80% of plastic products are finished after coloring.
h, reinforcing materials and fillers
In many organic glass products, reinforcing materials and fillers occupy a considerable proportion, especially reinforced plastics and calcium plastic materials. The main purpose is: in order to improve the strength and rigidity of plastic products, generally various fiber materials or inorganic substances are added. The most commonly used plexiglass reinforcement materials are: glass fiber, asbestos, quartz, carbon black, silicate, calcium carbonate, metal oxides and so on.
Some plastics in plexiglass products are pure resins, such as polyethylene, polystyrene, etc., which are called single-component plastics. In addition to synthetic resins, some plastics also contain other auxiliary materials, such as plasticizers, stabilizers, colorants, various fillers, etc., which are called multi-component plastics.