[IoT] Product design structure design: smart door lock or safe outer panel material selection

As an exterior part, the smart lock panel is an important part of the smart lock.

The panel materials of smart locks are mainly divided into three categories:

Plastics such as tempered glass, acrylic and PV/PC.

1) Tempered glass is mostly used in high-end models because of its high price;

2) Although the price of PV/PC is low, few manufacturers will use it because the quality is not good enough;

3) The most widely used panel is acrylic.

Advantages and disadvantages of glass cover and acrylic cover:

1) The surface hardness of optical-grade double-sided hardened acrylic is 4H, and the hardness of tempered glass is 6 to 7H;

2) Anti-fingerprint effect acrylic and glass can be made, and anti-fingerprint is cheaper than glass;

3) Thermal expansion and contraction are physical properties of acrylic, but larger than glass;

4) Processing time. The processing time of acrylic is about one-fifth of glass. The glass must be made into a single finished product before it can be screen printed. Acrylic is batch screen printing;

5) Glass is fragile and falls freely at the same height. Acrylic is less fragile than glass;

6) Cost, the cost of glass is more than twice that of acrylic, because the glass has a high defect rate, difficult processing, bursting and scrapping rates are higher than acrylic.
 

Guess you like

Origin blog.csdn.net/liwei16611/article/details/111246563