Machine Cast MC-145 A/B BJB Enterprises Polyurethane Thermoset Elastomer

Product Description

MC-145 A/B is a two-component urethane casting compound that can be used with meter-mix-dispense equipment. This product is a safe, easy-to-handle, room temperature mixing and curing system that does not contain TDI, MDI, MDA, or MOCA. MC-145 A/B is relatively insensitive to typical environmental moisture and will make good voidfree parts without the problems that some conventional urethane systems exhibit. Because of this product's exceptional toughness and abrasion resistance, castings made with MC-145 A/B are particularly suitable for the mineral process and
metal forming industries.

General

Material Status

Commercial: Active

Availability

North America

Features

Good Abrasion Resistance

Good Tear Strength

High Impact Resistance

Uses

Abrasion Resistant Liners

Automotive Bumper

Molds/Dies/Tools

Appearance

Buff

Translucent

Forms

Liquid

Physical	Nominal Value	Unit	Test Method
Specific Gravity			ASTM D792
Molding Shrinkage - Flow		in/in	ASTM D955
Elastomers	Nominal Value	Unit	Test Method
Tensile Strength (Yield)		psi	ASTM D412
Tensile Elongation (Yield)		%	ASTM D412
Tear Strength		lbf/in	ASTM D624
Hardness	Nominal Value	Unit	Test Method
Durometer Hardness (Shore D)			ASTM D2240
Thermoset	Nominal Value	Unit	Test Method
Thermoset Mix Viscosity (77°F)		cP	ASTM D2393
Demold Time (77°F)		min
Post Cure Time (165°F)		hr
Additional Information
Tensile Modulus, ASTM D-412: 12000 psi Viscosity, Brookfield, 77°F: part a: 3.800cps, part b: 1.650cps, mixed:2.800cps work time, 100g, 77°F: 4 minutes gel time, 100g, 77°F: 5 minutes demold time, 100g, 77°F: 30-60 minutes Mix Ratio by weight: 100/95 Mix Ratio by volume: 1:1
Related Terminology
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Features
Features may also be described by the following terms: Good Abrasion Resistance, Abrasion Resistant, High Impact Resistance, Good Tear Strength.
Uses
Uses may also be described by the following terms: Abrasion Resistant Liners, Automotive Bumper, Automotive Bumpers, Molds/Dies/Tools, Molds, Dies, tools.

Notes

¹Typical properties: these are not to be construed as specifications.

Machine Cast MC-145 A/B

Polyurethane Thermoset Elastomer

Supplied by BJB Enterprises, Inc.