From these observations a flame spread rating can be calculated.
Acrylic sheets with class b flame spread.
Its higher impact strength makes it a great glass replacement for applications such as garage door windows storm windows and other glazing needs.
Precautions should be taken to protect the material from flames and high heat sources.
Is an authorized stocking distributor of lexan polycarbonate sheet products including flame retardant lexan 9034v.
Lexan thermoclear thermoclick and corrugated sheet products have a class a.
Although stronger than glass and plexiglass fire rated polycarbonate is easily die cut punched and sheared to meet your fabrication.
The results of tests for fire propagation when tested to bs 476 part 7 confirm that acrylic glazing achieves a class 3 classification u k.
For example if the flame travels 19 1 2 feet in less than 5 1 2 minutes the time required for flame to spread on 19 1 2 feet of red oak the rating is 100 times 5 1 2 divided by the time minutes in which flame spreads 19 1 2 feet on the sample.
Overview of ul 94 flame classifications.
Ul 94 the standard for safety of flammability of plastic materials for parts in devices and appliances testing there are two types of pre selection test programs conducted on plastic materials to measure flammability characteristics.
The first determines the material s tendency either to extinguish or to spread the flame once the specimen has been ignited.
This material can thus be classified category tp b according to bs 2782 method 508 a for thermoplastics material as defined by the building regulations u k.
Flammability of paint study national paint coatings association inc 1974 project 3 3774 141 southwest research institute.
Fire rated polycarbonate sheet is a flame inhibiting uv stable plastic sheeting and glazing product that is virtually unbreakable.
Acrylic flammability data flammability.
Plexiglas g acrylic sheet in thicknesses 0 118 0 236 and 0 472 pass the requirements for flammability per faa far 25 853 appendix f part 1 paragraphs a 1 iv procedure b 5 15 second horizontal test formaly 25 853 b 2.
The ul listed material for flammability is a clear polycarbonate sheet that combines excellent formability and impact resistance.
Flame retardant polycarbonate sheets.
In all cases smoke development must be less than 450.
Flame spread and smoke development astm e84 in order to obtain the flame spread classification results must fall into a range between 0 and 25 to be class a 26 75 for class b and 76 200 for class c.
Access panels may be required for evacuation and venting of rooms glazed with acriglas sheet.
