Key points of the hottest polycarbonate plate maki

2022-08-07
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Key points of polycarbonate plate making

printers who often contact these two materials can distinguish them by feeling, possibly through sound, touch, appearance or tearing

the simplest is the chemical test. Polyester is solvent resistant while polycarbonate is not. Knowing this, a drop of cyclohexanone on polycarbonate will soften obviously after 15 ~ 30min, while polyester will not be affected

it is difficult to ignite polycarbonate during combustion test. It has crackling sound, orange flame, odor and black smoke. Polycarbonate is carbonized in the combustion process, and will continue to burn when removed from the fire. It is cut clean, softened in case of cyclohexanone, and not in case of aromatic solvent

the polyester burning test will find that it burns rapidly, with a blue light yellow flame. When it is moved from the fire, it will continue to burn. The above standard specifications mentioned that the polyester is very solvent resistant

test

the initial test begins with observation. Only when necessary, the chemical test of solvent and combustion can be carried out. Through the processing performance, it is possible to identify a variety of plastics without further chemical test

the first step is to record the color, texture and feel. The feel includes rough, smooth, cloth, fibrous, waxy and oily. Smell the plastic to determine whether there is any smell. If there is any smell, it may be a softener. Shake it to listen to the sound. Is it easy to bend? Or is it crispy? Can you tear it apart easily by making sure that we all study it carefully? Cut "a small piece of material, observe whether it is neat or has rough edges, and put it into the water to see whether it is floating or sinking

further tests are solvent experiment and combustion experiment. These tests shall be conducted in a well ventilated environment. Operators shall wear gloves and protective glasses when testing any industrial chemicals

a simple and easy solvent test is to drop a drop of solvent on the material, put it for 30min, and then touch the drop of solvent with the fingertips of gloves?? It is ketone solvent and aromatic solvent. Most thermoplastics are not solvent resistant, but the materials commonly used for printing are solvent resistant, including polypropylene, polyethylene and polyester

clean flame from alcohol lamp or propane burner shall be used for flame test or combustion test. Use a pair of pliers or tweezers to clamp a small piece of plastic to the flame, and observe the color and the appearance of the flame. The color can indicate the type of plastic. Remove the plastic from the spray gun and observe whether the material continues to burn or extinguishes itself

another method of flame test is to take 30cm long copper wire, strip a few centimeters of insulating material at one end, heat the exposed copper wire on the spray gun until it glows red and all impurities have been burned, lift the glowing copper wire onto the plastic, melt some plastic and cover the copper wire, move the copper wire wrapped in plastic onto the spray gun, and observe the flame color. Styrene is orange and ethylene is bright green, Other plastics have their own color characteristics

if it is inconvenient for the printer to carry out these tests, you can contact the ink supplier. The ink manufacturer provides complete testing services and technical services to distinguish the substrate

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