LIGHT IN WEIGHT
ACRYPOLY (Specific gravity 1. 19) is less than as compared with inorganic glass (Specific gravity 2. 5).
WATER CLEAR
Colorless ACRYPOLY is as clear as rock crystal. Its light transmittance rate of 93% means that ACRYPOLY is the most clear material available in the market.
WEATHER RESISTANCE
ACRYPOLY has an extremely excellent resistance to sunlight, weather, and both high and low temperatures.
Outdoor exposure test for all kinds of ACRYPOLY has been done both in a desert district of the U. S. and MRC's in Tokyo Plastics Laboratory.
VARIOUS COLORS AVAILABLE
A wide range of transparent colors as well as translucent colors are available.
Surface of colored sheet has superior gloss.
White translucent colors have a superior light diffusion effect, characteristics of which are rnade good use in lightning diltuser panel, sky-light-dome, sign-board and so on.
IMPACT RESISTANCE
ACRYPOLY has a greater impact strength than glass. It is unbreakable when You hit with hammer in case of breakage will not shatter into small pieces which will fly-off in different directions, thus safer than glass.
THERMALFORM ABILITY
Being a thermoplastic, ACRYPOLY becomes soft when heated, and hard when cooled.
Typical forming conditions using an air circulating oven follows:
| ACRYPOLY L SIZE | ACRYPOLY S SIZE | |||
| Thickness | 3.0mm | 4.0mm | 3.0mm | 4.0mm |
| Single curve forming | 140 ~ 145 degree C | 140 ~ 145 degree C | 140 ~ 145 degree C | 140 ~ 145 degree C |
| Free Blowing | 150 degree C | 145 degree C | 155 degree C | 150 degree C |
THERMAL CONDUCTIVITY
The thermal conductivity of ACRYPOLY is as small as that of phenolics and only one sixth of that of glass.
SURFACE HARDNESS
Generally speaking, the surface hardness of ACRYPOLY is almost the same as that of aluminum. It is harder than some of other plastics sheet but a bit softer than glass.
CHEMICAL RESISTANCE
It is insolvent to inorganic chemicals and normal chained hydrocarbon, but contact with inorganic solvent causes dissolution, swelling, hazing and cracking
EFFECT OF SOLVENTS:
Unattached at normal temp:
Hexane, Octane, Formaline 40%, , Glycol, Keten
Insoluble but swelled or crazing:
Methyl alcohol, Ethyl Alcohol, Isopropyl Alcohol, Carbontetrachloride
Soluble at normal temparature:
Acetone, Benzone, Totuol, Xylol, Ethylenedichloride, Cholroform, Ethylacetate.
| QUANTITY | CASTING | EXTRUDED |
|---|---|---|
| Appearance | A fine smooth finish on both surfaces can be obtained | One surface tends to be less than deffect. |
| Optical | Cast acrylic sheets are glass clear (ie. optically clew). having a light transmission rate of 92% | Haze is higher than cast sheets |
| Shrinkage during forming | 2% | There is a higher tendency of shrinkage |
| Crazing resistence | Cast sheets show exceptional resistance as a result of lower internal stress factors | Less resistant against crazing due to higher internal stress factors |
| Mechanical | Surfaces toughness exceeds extruded sheets due to improved alignment of polymers during polymerization | Extrusion produces sheets exhibit lower tensile strength due to less alignment of polymers as a result of the wital process of manufacture |
| Thermal | Heat distortion temperature is higher, Wrapping is less likely | Heat distortion temperature is lower. There is a higher tendency for sagging. |
| Forming | Elongation at break in the melt stage is lower and the achievable tensile strength of formed objects is higher | Elongation at break in the melt stage is higher. Tensile strength is lower |
Test Method: ASTM D-543 after 7 days immersion at 25 degree C (77 F)
| Reagent | Change in Appearance | Reagent | Change in Appearance |
|---|---|---|---|
| Acetone | Dissolved | Nitric acid (10%) | None |
| Aniline | Dissolved | Sodium hypochlorite | None |
| Iso-octane | None | Diethyl ether | Crazing |
| Ethyl Alcohol (95%) | None | Diemethyl formamide | Dissolved |
| Ethyl Alcohol (50%) | None | Ammonium hydroxide (S.G.0.9) | None |
| 2-Ethyl hexyl sebacate | None | Ammonium hydroxide (10%) | None |
| Hydrocloric acid (S.G.1.9) | soap aqua solution (1%) | None | |
| Hydrocloric acid (10%) | None | Sodium carbonate (20%) | None |
| Sodium chloride (10%) | None | Sodium cabonate (2%) | None |
| Oleic acid | None | Turpentine | None |
| Olive Oil | None | Tulene | Dissolved |
| Hydrogen Peroxide (28%) | None | Kerosene | None |
| Hydrogen Peroxide (3%) | None | Ethylene dichloride | Dissolved |
| Sodium hydroxide (48%) | None | Hydroflouric acid (40%) | Swollen, whitening |
| Sodium hydeoxide (10%) | None | n-Heptane | None |
| Sodium Hydroxide (1%) | None | Phenolic solution | Swollen, whitening |
| Citric acid (10%) | None | Transformer oil | None |
| Chromic acid (40%) | Roughened surface yellowish discoloring |
Benzene | Dissolved |
| Mineral Oil | None | Methyl alcohol | Swollen slightly |
| Acetic acid (5%) | None | Cotton oil | None |
| Acetic acid (S.G. 1.42) | Dissolved | Sulfuric acid (S.G. 1.84) | Swollen and dissolved |
| Ethyl acetate | Dissolved | Sulfuric acid (30%) | None |
| Carbon tetrachloride | Whitening | Sulfuric acid (3%) | None |
| Nitric acid (S.G. 1.42) | Dissolved | Water (distilled) | None |
| Nitric acid (40%) | None | Sea Water | None |