Polycarbonate is most commonly formed with the reaction of bis-phenol A produced through the condensation of phenol with acetone under acidic conditions with carbonyl chloride in an interfacial process.
PC falls into the polyester family of plastics. Polycarbonate remains one of the fastest growing engineering plastics as new applications are defined; global demand for PC exceeds 1. Looking to buy polycarbonate PC? Special flame retardant grades exist which pass several severe flammability tests. Constraints to the use of PC include limited chemical and scratch resistance and it's tendency to yellow upon long term exposure to UV light. However these constraints can be readily overcome by adding the right additives to the compound or processing through a co-extrusion process.
Polycarbonate is available in a number of different grades dependent on the application and chosen processing method. The material is available in a variety of grades such as film, flame retardant, reinforced and stress crack resistant, branched for applications requiring high melt strength and other speciality grades.
Also blends of PC are available with e. ABS or Polyesters, widely used in automotive industry. Processing of PC generally falls into:. Note that these ratings are generalised. The resistance against specific substances can deviate and are dependent on temperature, applied stresses, exposure time etc. Most studies with government funding showed BPA to be a hazardous risk to health while many with industry funding showed lower to no medical risks.
Regardless of the contradictory studies on the negative effects of BPA, certain types of Polycarbonate have been associated with its release. Although Polycarbonate is known for its high impact resistance, it is very susceptible to scratching. For this reason, clear surfaces such as a polycarbonate lenses in a pair of glasses will typically be coated with a scratch-resistant layer for protection.
Topics: Plastics. Our expertise and unique collaborative process alleviates your stress and helps take your Design, Engineering and Prototyping process to the next level. Home About Contact Blog. Email: info creativemechanisms. Call Now: Image From ptsllc. What are the Characteristics of Polycarbonate? Why is Polycarbonate used so often? A few examples include the following: clear windows on prototype models color tinted translucent prototypes clear tubes for sports equipment prototypes diffusers and light pipes for LEDs clear molds for urethane and silicone casting 3D printed models for high heat applications when ABS is not an option machinery guards We have seen tinted PC used for the purposes of reducing glare for example to cover lighted signs on the highway.
How is PC made? Is PC Toxic? It's become the plastic of choice as a durable and strong alternative to other materials for consumer products. The building industry uses polycarbonate due to its benefits over glass but the key advantages include the ability to act as a glass alternative, by diffusing light and filtering light through in various colours. It can also be used to maintain and modify heat through temperature control by absorbing heat resulting in slightly cooler rooms even in direct sunlight.
The shatterproof nature of polycarbonate means its ideal for not only roofing but also perfect for garden sheds and greenhouses in particular. The world of technology is expanding all the time and there is a big push particularly in light of companies becoming more eco-friendly towards efficient plastics and durable materials which help with reducing carbon emissions.
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