How to check the strength and hardness of the acrylic display stand?
When customers receive an acrylic display stand, they generally only pay attention to the design and sticking stability of the acrylic display stand, and often ignore the strength test of the acrylic display stand. We have been concerned about the production and processing of acrylic display stands for 18 years. Today, we will teach customers how to test the strength of acrylic display stands.
Acrylic display stands mainly reflect the quality through appearance check points such as transparency, brightness, and surface finish, but some strength requirements are often ignored by ordinary buyers or users. The structural design and strength of the acrylic display stand are very important and are related to the wear and tear of the display stand and its service life.
The surface hardness and toughness of acrylic display stands are two important strength indicators. Hardness refers to the hardness of an object. Diamond is the hardest natural substance and can be used to cut hard glass; toughness refers to the ability of an object to return to its original shape after deformation. Although diamonds are hard, they have low toughness and are easily broken. Acrylic display stands have low hardness, but good toughness. After heating, its bending ability is stronger than glass, but the surface is not as hard as tempered glass.
What is the relationship between the hardness and toughness of the acrylic display stand and its quality? The higher the surface hardness of acrylic display stands, the higher the scratch resistance; the better the toughness, the less likely it is to break. If some inferior acrylic display stands are processed with reusable recycled materials, they will age and turn yellow, and the product will have poor toughness. It will break with a little effort and cannot withstand a drop. Hardness is one of the rigid indexes to evaluate the quality of acrylic display stand. Compared with the acrylic display stand produced by the extrusion method, the acrylic display stand produced by the casting method has a higher hardness index, reaching an average of 90 degrees Rockwell hardness.
In addition to using a professional Rockwell hardness tester, is there a simpler, more intuitive and more life-like method for testing surface hardness? In fact, many factories do not use professional hardness testers to accurately detect the surface hardness of acrylic display stands, but use a relatively simple comparison method: use a pencil to draw a horizontal line on the surface of the acrylic display stand with a force of about 1KG, and use an eraser. Wipe it clean to see if there are any obvious marks on the surface. The surface hardness of the acrylic display stand can be distinguished by the pencil label. The surface hardness of acrylic display racks is generally divided into 2B, 1B, HB, H, 2H, 3H from low to high, and acrylic display racks with surface hardness of 3H can be reached.
The surface hardness of our acrylic display stands can reach the highest level between 2H and 3H. It is very scratch-resistant and has very good toughness.