WHAT IT IS ACRYLIC:
Acrylic, a thermoplastic, is the polymer of Methacrylate of Metila monomer, produced from raw material. It is the noblest of plastics, brilliant, more transparent than glass and more resistant to the weather conditions than any other.
Despite all these qualities, it is not more expensive than its substitutes. In fact, in most of the applications where the characteristics of the acrylic are needed, it is the best cost-benefit option.
Properties of the Acrylic Plates Cast.
Below we describe some typical properties of the "Cast" acrylic plates. The data below are only for information, not constituting guarantee.
A) Transmission of light
The acrylic plates crystals have up to 92% of transparency, surpassing all the other competing materials used in the civil construction that possess this characteristic, including the glass.
B) Resistance to Impact
The acrylic plates are approximately 10 times more resistant to impact than a glass of the same thickness. Acrylic plates can be used in applications where resistance to impact is necessary, the necessary thickness to be used having to be evaluated.
Acrylic is ten times more resistant to impact than the glass.
C) Weight
Acrylic plates have 50% of the weight of glass of the same thickness or 43% of the weight of aluminum per unit of area.
D) Acoustic Isolation
The table below shows the reductions of noise obtained with the use of acrylic plates in different thickness (values in decibels).
Acrylic gauge:
Frequency of the Sound 3mm 6,35mm 10mm 15,9mm
Low 15 21 25 28
High 28 31 33 35
Note: A bigger reduction, from 3 to 5 dB, can be obtained using the system of double wall with air chamber.
E) Coefficient of Expansion
The acrylic plates are dilated or contracted more than the majority of the usual materials of construction, although less than most plastic. Below we compare the coefficient of expansion of acrylic plates with aluminum and glass.
Values in cm/cm /ºC.
Material Coefficient of Expansion
Acrylic 0,0000738
Glass 0,0000091
Aluminum 0,0000233
Thus, attention must be paid in the installation of the acrylic to allow enough space for its expansion.
F) Rigidity
Acrylic plates also have lesser rigidity that the glass or aluminum being subject to pliancy if submitted to a load. Note that flexibility reduces the total area of the plate, this having to be foreseen deciding for its use.
G) Load in Use
The acrylic plates must not be submitted to loads or tensions superior to 100 kg/cm2. The use over of this condition will cause "crazing" in the material.
H) Temperature of Work
The acrylic plates behave well in the temperature range between 40ºC negative and 80ºC positive.
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