pmma resin suppliers
Polymerisates of monomers or pre-polymerised methyl-methacrylates with modified components are used to make MMA resins.
The reaction resins are hardened through peroxide to thermoplastics or duromers in the presence of a catalyser. The powdered hardener is introduced to the fluid monomer mixture either in a solution of polymerisate in related monomers (casting resin system) or in a mixture with polymer powder (MoPo system). Unlike the cast resin technique, which requires somewhat precise component dosage, the MoPo system is more or less independent of dosing.
Hard to soft coatings can be generated according to the requirements, depending on the type of resin and modification. The viscosity of fluid polymer resins is often very low. Hardening of conventional PMMA systems takes between 20 minutes to an hour. Temperatures as low as 0° C, and in the case of cast resin, as low as -10° C, can be achieved without significantly slowed hardening times or loss of characteristics.
The formation of scents during working and hardening is a negative, as is the fact that these resins are flammable and can form inflammable mixes when mixed with water vapours. Because PMMA resins shrink quite a bit during hardening, problems can emerge if these shrinking stresses aren’t appropriately addressed by careful pipe treatment and appropriate mortar recipes.
| Properties | Unit | No filler | Filler(Quartz) | Test standards |
|---|---|---|---|---|
| Filler contents | % Weight | 0 | 55 to 75 | − |
| Raw density | g⁄cm3 | Approx. 1.2 | 1.4 to 1.9 | DIN 53479 |
| Compressive strength | N⁄mm2 | to 20 | 30 to 90 | Similar to DIN 1048 |
| Bending strength | N⁄mm2 | to 10 | to 40 | DIN 53452 |
| Tensile strength | N⁄mm2 | to 50 | 10 to 20 | DIN 53455 |
| E−Modulus from bending |
N⁄mm2 | to 2000 | to 9000 | DIN 53457 |
| Linear coefficient of thermal expansion |
10−6 mm⁄mmK | to 150 | 50 to 80 | VDE 0304 |
| Shrinkage (linear) | % | < 1 | < 1 | Rod method (not standardised) |
