Plexiglass and acrylic are trade names for polymethyl methacrylate (PMMA), a synthetic resin made from methyl methacrylate (MMA). PMMA is a clear plastic that can be molded into various shapes and sizes. It has many advantages over glass, such as shatter-resistant, weather-resistant, UV-resistant, moisture-resistant, and easy to work with. But technically, both Plexiglass and Acrylic are not the same thing. The difference lies in the manufacturing process, which can be extrusion or cell casting. Plexiglass has a more rigid and transparent surface and is more scratch-resistant than extruded acrylic sheets.
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This blog post will explain the common confusion between the plexiglass and cast acrylic, their manufacturing process and composition, their difference in physical properties and features, their applications and uses, and their cost and availability.
The confusion between Plexiglass and cast acrylic arises primarily because Plexiglass is actually a brand name for a type of cast acrylic sheet. Plexiglass is a registered trademark of the company Rohm & Haas, which is now owned by Arkema. Over time, the term Plexiglass has become synonymous with cast acrylic, similar to how Band-Aid is often used to refer to any adhesive bandage. This common usage has contributed to the misconception that Plexiglass and cast acrylic are one and the same.
Acrylic is a generic term for a synthetic polymer that is derived from acrylic acid. Acrylic can be molded into different shapes and forms, such as sheets, rods, tubes, and fibers. Plexiglass sheet is one of the most popular forms of cast acrylic sheet with many advantages over glass, such as being lighter, stronger, and more resistant to shattering.
However, plexiglass is not the only brand name for acrylic sheets. Other brands, such as Lucite, Perspex, Acrylite, and Optix, also produce high-quality acrylic sheets. Hence, plexiglass is a type of acrylic sheet, but not all acrylic sheets are plexiglass.
Plexiglass and acrylic are both made from the same material: polymethyl methacrylate (PMMA). PMMA is a thermoplastic polymer that can be heated and cooled repeatedly without losing its properties. PMMA is produced by polymerizing methyl methacrylate (MMA), a monomer that is derived from petroleum or natural gas.
The manufacturing process of plexiglass and acrylic involves two main methods: extrusion and casting.
Extruded acrylic sheets are cheaper and more flexible than clear-cast acrylic sheets. However, cast acrylic sheets tend to have better optical quality and higher resistance to scratching and chemicals than extruded sheets. Besides, clear cast acrylic is transparent, impact resistant, moisture resistant, and half the weight of glass, yet 17 times stronger. In addition, clear acrylic boasts a higher optical clarity than glass, but it is also 10 times more shatter resistant.
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Plexiglass and cast acrylic have similar physical properties and features, such as being transparent, lightweight, durable, and easy to work with. However, there are also some differences that may affect their suitability for different applications. Here are some of the main differences:
Both plexiglass and acrylic have high transparency and clarity, allowing the most visible light to pass through them without distortion. However, cast acrylic sheets (plexiglass) tend to have higher transparency and clarity than extruded acrylic sheets because they have less internal stress and fewer impurities. Cast acrylic sheets can transmit up to 92% of visible light, while extruded cast acrylic sheets can transmit up to 90% of visible light.
Both plexiglass and acrylic cast has high resistance to impact and weathering, meaning they can withstand strong forces and harsh environmental conditions without breaking or degrading. However, plexiglass tends to have higher resistance to impact than acrylic because it has higher molecular weight and cross-linking density. Plexiglass can withstand up to 17 times more impact than glass, while acrylic can withstand up to 10 times more impact than glass.
Moreover, they have good UV stability and low water absorption. However, plexiglass tends to have higher resistance to weathering than acrylic cast because it has a lower thermal expansion coefficient and higher heat deflection temperature. Plexiglass can withstand temperatures up to 115°C (239°F), while acrylic cast can withstand temperatures up to 95°C (203°F).
Both plexiglass and acrylic have low thermal conductivity, meaning they do not conduct heat well. This makes them good insulators for windows and doors. However, plexiglass has lower thermal conductivity than cast acrylic sheets because it has higher molecular weight and cross-linking density. Plexiglass has a thermal conductivity of 0.19 W/mK (watts per meter kelvin), while cast acrylic sheet has a thermal conductivity of 0.2 W/mK.
Plexiglass and acrylic find applications in various industries due to their versatility.
Plexiglass is a clear-cast acrylic sheet that has good optical properties. It is ideal for high-performance applications that require clarity, durability, and customization, such as retail displays, aquariums, greenhouses, clear store displays, solar panels, and bullet-resistant glazing.
Acrylic cast sheets are not transparent/opaque. They are suitable for applications that require less demanding specifications, such as signage, framing, rear projection screens, picture frames, extruded plastic sheets for furniture, skylights, etc.
In terms of cost, Plexiglass is generally more expensive than standard-cast acrylic. This is partly due to its brand recognition and the perceived higher quality associated with the Plexiglass name. Acrylic, a more generic term, is widely available from various manufacturers and suppliers, making it more accessible and cost-effective for many applications.
In terms of availability, both are available in different sheet sizes, thicknesses, and colors to suit different needs and preferences. At PrintSafari, some standard sheet sizes for plexiglass and acrylic sheets are 4×8, 4×10, 4×12, 5×7, 6×10, 8×10, 12×12, 12×36, 14×14, 18×24, 24×36, and 30×36 inches. However, these sheets can also be laser-cut to custom sizes according to the project’s specifications. Plexiglass and acrylic sheets can be easily shaped using laser cutting and are durable and lightweight, which can be used for windows, signs, displays, furniture, art, and more. You can also get done custom prints on your cast and extruded acrylic sheets with viable thickness tolerance.
In conclusion, while Plexiglass and acrylic are related, they are not identical. Plexiglass is a specific brand of acrylic, and both materials have their own unique properties and characteristics. Understanding the differences between Plexiglass and acrylic is crucial when choosing the right material for a specific application. Factors such as transparency, impact resistance, weather resistance, thermal properties, and cost should all be considered. By being aware of these distinctions, you can make informed decisions and select the most suitable material for your project.
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get an instant print quote!Meta description: Acrylic plastic, also named plexiglass sheet, has become a household name for residential, commercial, and also industrial purposes. Find out today why people love them so much and use them everywhere! Here are the advantages of Acrylic you need to know.
Acrylic plastic is one of the world’s oldest synthetic materials available. Acrylic is a tough transparent plastic alternative to glass which became a common name in almost all industries and for household uses instantly.
This material is becoming more common in the building industry. It’s tough, as well as shatter-resistant. For which it was used during World War II for making periscopes and gun turrets.
Let’s see some of the benefits of Acrylic Plastic and why they are so commonly used worldwide:
When it comes to manufacturing material, acrylic shows excellent performance because of its ability to be molded into any shape. Acrylic, when heated up to 100 degrees, can be easily molded into a variety of shapes such as:
As it cools with time, it holds its formed shape. This makes it easier for manufacturers to make large sheets into bow-front aquariums and skylights. Being a thermoplastic, it softens when the temperature is raised and thus it is formed into different shapes.
The toughness of this material makes it appropriate for indoor and outdoor applications like- windows, car lenses, or headlights. They can resist tough weather, including hailstorms, as they are stronger than glass.
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Acrylic letters as outdoor signs hold up indefinitely, resist adverse weather and hold the color. Sculptors and glass artists prefer acrylic for outdoor designs because of the material’s weather resistance and light refracting capabilities.
Besides weathering, acrylic plays a vital role in protecting colors. Light does not affect the color of acrylic. That’s why they tend to retain the color for a long period.
For instance, when used as hanging wall signs, they glow easily. The reason is that acrylic is easily lit with clarity.
Clear acrylic sheets have high optical clarity, which makes them suitable for greenhouses, windows, or skylights. One of the common uses is plane windows. The optical clarity of acrylic does not turn yellow with age.
Transparency of this material is tested when it is used as surveillance mirrors and automobile parts where transparency and durability are valued.
Acrylic is used as food sneeze guards in cafeterias, self-serve salad bars, grocery takeaway displays, and many sweets stores. People often prefer a food sneeze guard with a curved surface on the outside.
It is quite expensive and a lengthy process to manufacture a curved glass for this purpose. Acrylic has made it easier for the manufacturers to be used in the food sneeze guards and curved easily. And this is easier to fit in because it’s lightweight.
Acrylic plastic is UV resistant in nature. So, it makes them a perfect choice for roofing for both commercial and residential spaces. Also for carpool and other shades.
Acrylic is 50% less the weight of glass and more durable. Therefore it is easy to handle polymers. This makes it suitable for several industrial applications, which include the roofing system of homes.
Acrylic shoes, dentures and artificial nails, and other commodities are more comfortable due to their lightweight properties. The majority of composite dental filling is made of acrylic.
Polymers are used for cosmetic surgery too. It is easier to install acrylic on the roofs without any risk. Acrylic skylights are easier to install and they increase light transmission. The roofs do not significantly increase the load on a house’s foundation or frame.
Acrylic plastics have a tensile strength of lbs. per square inch. You can install acrylic plastic on impact-prone areas like- security barriers, shower doors, bath enclosures, field barriers, or other custom purposes that are impact prone. But it is not stronger than polycarbonate, know the difference between acrylic and polycarbonate.
Because the impact resistance of acrylic is 6-17 times greater than glass, it has a beneficial safety feature. They are also used as hockey rinks and ball field enclosures, sliding glass doors, security applications where clarity is needed, and windows.
If you live in an area with frequent storms or hail storms, acrylic is the right choice. Its high-impact capability can resist any storm without any crack or scratch on the surface.
One of the most significant advantages of using acrylic plastic instead of glass is that- it is 50% less in weight than glass but is more durable and stronger than glass. Because of having excellent durability, acrylic can be used over a broad temperature range.
The material does not shatter or crack under high impact, making it different from glass and other forms of plastic. Unlike glass, acrylic does not shatter and break into million pieces easily. The best thing about this material is that both cast and extruded acrylic are cheaper than glass.
Maybe, you want to know the difference between plexiglass and glass.
When machining a glass material, you need to proceed with caution. Any ignorance or error might lead to damaged pieces or many times the glass breaks. There are only a few methods for machining glass unless it breaks.
On the contrary, acrylic can be machined without any restrictions and it is less time-consuming. The plexiglass offers limitless options for machining. The machining can be carried out in several methods like- saw, mill, drill, engrave, glue, polish, bend, and beyond.
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Acrylic is ideal for applications where safety is a must. It is challenging to break acrylic than glass as it is 30 times stronger than glass. That is why acrylic sheets are often used for balcony glazing of aquariums.
In addition to that, being UV resistant makes this plastic a safer choice for roofs and skylights.
Apart from all other advantages, acrylic is also an insulating substance meaning it can cut down your energy bills if you use it on a construction project. This property of acrylic plastic also prevents electrocution in construction.
UVACRYLIC is 100% subsidiary of UVPLASTIC, which is a top manufacturer of polycarbonate sheets and acrylic sheets. Meantime, we provide machining polycarbonate services.
Acrylic plastics are suitable for multiple applications, not only for a single property. They are tough and durable and can resist adverse weather and impact. Acrylic plastics can be curved and they can be molded into any shape, unlike glass.
It is easier to handle because of its lightweight design which makes it fit for all applications. Medical, cosmetic, construction, and many such industries have adopted acrylic as it benefits the users. They cannot be broken or shattered no matter how force is applied to them.
So if you are looking for a light, transparent, or semi-transparent, durable, impact-resistant, and light material, it cannot be any better than acrylic. Acrylic does not only serve your purpose but is also easy to handle and install.
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