one. Storage and handling of boards:
● Store the sheet in a dry, ventilated environment at room temperature. Do not expose the sheet to direct sunlight, heat, or moisture.
● Do not peel off the protective film before using the sheet, because the daily dust and dirt will adhere to the surface of the sheet due to static electricity. The protective film also protects the board from abrasion and scratches.
● Avoid warping, the plate should be naturally flat storage, for vertical storage, it is best to the plate into a small angle storage, and placed under the support.
two. Characteristics of Acacia
● Light weight, only about half of ordinary glass, specific gravity (1.19-1.20).
● high transparency, transparent plate of light transmission rate of 93% and above, more than ordinary glass, and has a crystal-like luster.
● white board with good light diffusion and light transmission, widely used in Dengzhao, advertising light boxes.
● has excellent UV resistance and weather resistance, can be used in tropical and cold outdoors.
● easy to thermoforming, with a blast oven will be thoroughly baking soft plate, the temperature reaches 140 ℃ to 160 ℃ to shape,
● Plates can be molded many times without damage.
● High surface hardness, equivalent to aluminum, more than most other plastics, but the ordinary plate can not withstand the steel, ceramics and glass and other inorganic materials, friction, should be properly protected.
● Resistant to common chemicals.
● Has good impact resistance.
● can be fully recycled, environmentally friendly
● Complete product variety: colorless transparent board, transparent transparent board, opaque color board, white board and porcelain white board, blackboard, mirror panel, anti-punch board and so on, and can be customized according to customers.
● Thickness from 2 mm to 100 mm can be produced.
three. How to Avoid Deformation of Acrylic Products
● The frame should be reserved for shrinkage and expansion.
● The oval-shaped screw hole must be drilled to fit the screw.
● Select the elastic rubber gasket.
● Hot forming increases the impact strength and releases internal stress.
● Thermoformed into wave type, diamond type and semi-circular shape to prevent deformation of the acrylic plate due to gravity droop.
● When using a large acrylic sheet, increase the thickness to prevent the sheet from drooping due to its own weight.
● choose the appropriate thickness to avoid the wind caused by acrylic bending deformation.
four. Precautions for use
● ordinary acrylic sheet heat distortion temperature is about 100 ℃, continuous use temperature should not be higher than 85 ℃.
● Acrylic sheet surface hardness is equivalent to aluminum, in the use or processing should be careful to avoid scratching the surface. Such as being scratched, can be restored by polishing the original glossy surface.
● Acrylic board is prone to static electricity, dust absorption. Clean with a soft cotton cloth dipped in 1% soapy water to wipe the test can be.
● Acrylic cast sheet linear expansion coefficient of about 7x10-5m / m.K, in the installation, fixed acrylic plate must be considered when leaving adequate stretching gap.
Fives. Calculation Method of Thermal Expansion and Contraction of Acrylic Sheet in
● Assuming that the temperature of the acrylic plate of 1000 mm long increases from 15 ° C to 42 ° C, the thermal expansion amount is:
1000 mm x 7 x 10-5 (42-15) = 1.89 mm
? Assume that the temperature of the acrylic board of 1000 mm length is reduced from 20 ° C to minus 30 ° C and the amount of shrinkage is:
1000 mm x 7 x 10-5 (20 - (- 30)) = 3.50 mm
six. Yanchun Acrylic sheet general processing Instructions for use:
● Rewan - open a small slot mold, the heating wire suspended in which mounted and connected to the heating transformer, transferred to a certain current, so that electric wire red, and then placed on top of the acrylic board heating to be soft after baking Can be hot bending molding, the best plate heating temperature of 100-110 ℃
Mechanical polishing - polishing the edge of the plate with a mechanical polisher should be as smooth as possible to deal with the edge of the plate, polishing polished cloth wheel after polishing wax, the plate gently in the polishing wheel pressure, uniform back and forth to promote. At this point should be noted that, not the plate in the polishing wheel for a long time to stay, otherwise, the sheet will burn yellow, resulting in throwing does not shine.
● flame polishing - saw cutting, the edge of the edge of the plate to remove burrs, and then sand the edges of the plate will be thin, flame polishing machine for polishing treatment. Polishing should pay attention to speed and balance.
● Thermoforming - using hot air circulation oven and hydraulic molding machine
● First of all, the molding of light boxes or fonts in a ratio of a good mold, then the mold fixed to the hydraulic press, while the plate into the oven baking, about 8 to 10 minutes after the baking plate to completely soften , Then quickly transferred to the pre-fixed mold on the mold, about 10 minutes to cool off.
● Adhesive - Shen Chun-chun to the use of acrylic users in the spring prepared specifically for different purposes of bonding a variety of glue. Such as:
● glue products used in the process - grams Po: This colorless colorless transparent liquid, the advantage is quick-drying (glue poured into the dry about 1 minute), the other joints are not white, much better than the market now use Of chloroform (chloroform), to achieve a beautiful effect.
● Glue for advertising light box - Acrylic glue: This glue is colorless and transparent liquid, suitable for the bonding of light box and acrylic. It can not degum and glue beautiful place. It can be greatly reduced when used outdoors. Maintenance rate, to achieve security purposes.
● Thick plate docking and fish tank bonding - Japan imported glue: This glue is a colorless transparent resin ester, designed for the use of docking a long plate and fish tank and the introduction of the bonding. Advantages are high seam transparency at the joints, seams are not obvious, known for high strength. To meet the customer aesthetic results.
