What is the material composition of acrylic sheet (analysis of advantages and disadvantages of acrylic sheet)

1. What are the materials of acrylic sheet material?

The composition of acrylic sheet is mainly polymethyl methacrylate (PMMA), that is, we often hear about plexiglass, and some friends may mistakenly think that it is a kind of glass, but it is actually plastic in terms of performance and use. Acrylic sheets can be simply divided into two types according to the manufacturing process: pouring plates and extruded plates, and their properties are also different.

Acrylic casting plate: Generally, the acrylic raw material is melted, plasticized, and then put into the mold to shape, and finally cut into different pieces according to the demand. The molecular weight is high, the stiffness and strength are good, and it also has stable chemical properties, and the specifications of the product are very complete.

Acrylic extrusion plate: Generally, the acrylic raw material is melted first, and then extruded at high temperature by mechanical equipment. The molecular weight is low and the mechanical properties are slightly weaker, but this feature is conducive to bending and thermoforming processing.

2. Analysis of the advantages and disadvantages of acrylic sheets

1. Advantages of acrylic sheet

1) Good plasticity: acrylic sheet is suitable for machining, easy to heat and shape, can be shaped into a variety of shapes, and is suitable for many occasions.

2) Strong light transmittance: acrylic sheet is colorless and transparent, and the light transmittance can reach more than 95%, which is very similar to glass.

3) High stability: The physical and chemical properties of acrylic sheet are stable, can adapt to a variety of environments, and can withstand long-term wind, rain and sun.

4) Long life: Generally, the service life of ordinary acrylic sheet is about 10 years, while the service life of high-quality acrylic sheet can be 20-30 years.

2. Disadvantages of acrylic sheets

1) The manufacturing process of acrylic sheet material is very complex, if it is not standardized, it will lead to a decrease in its performance, and even the material that is not fully processed will release toxic substances and endanger human health, so we must choose regular and qualified products.

2) Acrylic sheet is soluble in organic solvents due to its special chemical properties, and we try not to let it come into contact with wind oil, alcohol, benzene and other substances during daily maintenance.

3) Easy to leave scratches: The hardness of ordinary acrylic sheets is not very large, so we try not to hit them with too hard or sharp objects to avoid damage and affect the aesthetics.

3. How to choose acrylic sheet

There are many types of acrylic sheets on the market, and the quality is also uneven, so you can refer to the following points when purchasing:

1. Look at the surface: first of all, you can observe whether the whole plate has yellowing and discoloration, especially at the edge, to see whether it is smooth and flat, if there is, the quality is not good;

2. Look at combustion: High-quality acrylic sheet is non-flammable, we can try to ignite it with a small board, if it burns quickly and the taste is great, it means that the quality is not good.

3. Look at the thickness: the thickness of the acrylic plate is closely related to its strength and stability, and the thickness must be understood clearly before purchasing.