Casting Resins
Quick Overview
Casting Resins are specifically formulated as 2-component 100% solids polyurea-based materials designed to produce dimensionally stable high temperature, high impact, chemical resistant parts. Resins are available in both hard or flexible versions and provide a dent-scratch resilient class A part surface. Flexible Casting Resin may be pour cast, RIM injected molded or cartridge gun spray dispensed. Cured materials are extremely tough and exhibit excellent durability against abrasion and cleaning chemicals. Casting Resins deliver a 1-15 minute reaction time to provide enhanced part manufacturing cycle times. Depending on the hard or semi-flexible neat formulation the material shrinkage will range from .007-.010 in./lin. in. Fillers may be added to reduce shrinkage and to provide other desired physical properties. Pigments are normally added to provide uniform appearance. Material functional operation temperature ranges from -40°F to 180°F.
Physical Properties
Casting Resin 60 A – Flexible Physical Properties | ||
---|---|---|
Color/Clearity | Visual | Amber/Opaque |
Flex Modulus | ASTM D790 | 20k psi (241.3 Mpa |
Tensile Strength | ASTM D412 | 1200 psi (13.8 Mpa) |
Elongation | ASTM D412 | 450% |
Hardness -Shore A | ASTM D785 | 60 A |
Abrasion -TaberCS17 | ASTM D4060 | 50 mg/1k cycles |
Tear Strength | ASTM D624 | 200 lbs/lin in. (5357 kg/m) |
Gel Time | Time | 6 min |
Mix Ratio | PBV | 1:1 |
Casting Resin 70 D – Hard Physical Properties | ||
---|---|---|
Color/Clearity | Visual | Amber/Opaque |
Flex Modulus | ASTM D790 | >350k psi (2413.16 Mpa) |
Tensile Strength | ASTM D412 | 5000 psi (34.47 Mpa) |
Elongation | ASTM D412 | 30% |
Hardness -Shore D | ASTM D785 | 70 D |
Abrasion -TaberCS17 | ASTM D4060 | 50 mg/1k cycles |
Tear Strength | ASTM D624 | 350 lbs/ lin.in (6250 kg/m) |
Gel Time | Time | 15 min |
Mix Ratio | PBV | 1:1 |
Casting Resin 75 A – Flexible Physical Properties | ||
---|---|---|
Color/Clearity | Visual | Amber/Opaque |
Flex Modulus | ASTM D790 | 35k psi (241.3 Mpa |
Tensile Strength | ASTM D412 | 2000 psi (13.8 Mpa) |
Elongation | ASTM D412 | 400% |
Hardness -Shore A | ASTM D785 | 75 A |
Abrasion -TaberCS17 | ASTM D4060 | 50 mg/1k cycles |
Tear Strength | ASTM D624 | 300 lbs/lin in. (5357 kg/m) |
Gel Time | Time | 15 min |
Mix Ratio | PBV | 1:2 |
Mixing Instructions
Casting Resins may be mixed and dispensed using a plural component pumping machine for pour casting or RIM injection. They may also be dispensed using low pressure pneumatic cartridge guns with static mixer tubes or hand batch mixed in bucket using jiffy mixer. When hand mixing, stir slowly and carefully as to not induce air into resin mixture. Cured material produces a smooth glossy surface. To obtain a Class A mold surface, mold surfaces must be polished smooth. Casting Resins must be mixed thoroughly before using. It is very important not to induce air bubbles while mixing as to avoid air entrapment. For closed mold RIM part manufacture, always provide adequate air-bleed tunnels or vents throughout mold perimeter. For pour casting of parts,small entrapped surface air bubbles may be relieved by quickly waving over the liquid surface with a propane torch. Please call email our Technical Support Group for any questions regarding material, application or direction of use.
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