TASK™ 16

Description

This low odor, fast-setting urethane offers high tear strength, impact resistance, and wear resistance.

TASK™ 16 is phthalate free, mercury free, and MOCA free.

Mixed one part A to two parts B by weight, it pours easily with a working time of 6 minutes and a handling time of 90 minutes at room temperature.

The cured resin has exceptional performance characteristics and dimensional stability. It can be colored with SO‑Strong™ or Ignite™ colorants.

Applications

TASK™ 16 is suitable for making fast mechanical parts, gaskets, wheels, and pullies, impact-resistant props, and archival master models.

It is also used to make fast, wear-resistant rubber molds for casting concrete or concrete stamping pads. Additionally, it is an excellent choice for rotocasting to create hollow semi-rigid castings.

Important:

Cured material will inhibit the cure of liquid platinum silicone. You cannot pour platinum silicone into cured material.

Tin silicone must be used if you intend to pour silicone against cured material.

Technical Properties

Mix Ratio By Weight: 1A:2B
Working time: 6 minutes
Handling Time: 90 minutes
Cure Time: 24 hours
Shore Hardness: 80 A
Specific Gravity: 1.08 g/cc
Specific Volume: 0.93 cm³/g
Color: Light Yellow
Tensile Strength: 15.6 MPa
100% Modulus: 5.9 MPa
Elongation @ Break: 233%
Shore Hardness: 30 D
Die C Tear Strength: 34.5 kN/m
Shrinkage: 0.0025 mm/mm
Mixed Viscosity: 1,400 mPa·s

Instructions

These products have a limited shelf life and should be used as soon as possible. Store and use at room temperature (23°C).

This material is moisture sensitive, so relative humidity should be below 50%.

Wear safety glasses, long sleeves, and rubber gloves to minimize contamination risk.

Room size ventilation is necessary.

Applying A Release Agent

A release agent is necessary to facilitate demolding when casting into or over most surfaces. Use a release agent made specifically for mold making. A liberal coat of release agent should be applied onto all surfaces that will contact the plastic.

Important: To ensure thorough coverage, apply release and brush with a soft brush over all surfaces. Follow with a light mist coating and let the release agent dry for 30 minutes.

Selecting A Mold Rubber

Pour into a urethane rubber mold (release agent required) or a silicone rubber mold. To prevent cure inhibition, post-cure newly made tin silicone molds for 8 hours at 60°C and let cool prior to casting resin.

If you are unsure about surface compatibility, a trial casting should be made.

Because no two applications are quite the same, a small test application to determine suitability for your project is recommended if performance of this material is in question.

Measuring & Mixing

Liquid urethanes are moisture sensitive and will absorb atmospheric moisture resulting in bubbles in the cured rubber. Mixing tools and containers should be clean and made of metal or plastic.

Shelf life of product is drastically reduced after opening. Immediately replacing the lids on the containers after dispensing product will prolong the shelf life of the unused product.

XTEND-IT™ Dry Gas Blanket will prolong the shelf life of unused liquid urethane products.

Important: Pre Mix the Part B before using every time.

Measuring: An accurate gram scale is required to measure out 1A:2B. Inaccurate measurement can result in material partially curing or not curing at all.

Hand Mixing: After weighing and dispensing the required amounts of Parts A and B into mixing container, mix thoroughly for at least 90 seconds making sure that you scrape the sides and bottom of the mixing container several times. Pour entire quantity into a new, clean mixing container and mix again as directed above.

Mechanical Mixing: Drill mix using a Turbine mixer or equal for 30 seconds followed by careful hand mixing for 30 seconds as directed above. Then, pour entire quantity into a new, clean mixing container and repeat mixing procedure.

Be Aware: Material pot life is 6 minutes at 23°C. Pot life at elevated temperatures will be less. Do not delay between mixing and pouring.

Although this product is formulated to minimize air bubbles when cured, vacuum degassing will further reduce entrapped air. A pressure casting technique using a pressure chamber can yield totally bubble free castings.

Pouring

For best results, pour your mixture in a single spot at the lowest point of the containment field. Let the rubber seek its level. A uniform flow will help minimize entrapped air.

Curing

Allow the mold or casting to cure (at least 90 minutes) at room temperature (23°C) before demolding. Do not cure rubber in temperatures less than 18°C. Cure time can be reduced with mild heat or by adding a cure accelerator. This material will reach full cure in 24 hours at 23°C.

Post Curing

Although not necessary, post curing will enhance physical and performance properties. After material has cured at room temperature, heat while still in the mold to 65°C for 4 to 8 hours. If using this rubber as a mold material, a release agent should be applied to the mold before each casting. The type of release agent to use depends on the material being cast.

Performance & Storage

Fully cured rubber is tough, durable and will perform if properly used and stored. The physical life of the rubber depends on how you use it.

Specifications

Hundred Percent Modulus	855 psi
Color	Light Yellow
Mixed Viscocity	1,400 cps
Cure Time	24 hours
Pot Life	6 minutes
Specific Volume	25.64 cu. in./lb.
Die C Tear Strength	197 pli
Specific Gravity	1.08 g/cc
Mix Ratio By Weight	1A:2B
Shrinkage	0.0025 in. / in.
Tensile Strength	2,264 psi
Elongation At Break	233 %
Shore A Hardness	80
Shore D Hardness	30
Handling Time	90 minutes

Available in Polyurethane Resin

Product	Cure Time	Specific Gravity	Specific Volume	Tensile Strength	Tensile Modulus	Compressive Strength	Compressive Modulus	Flexural Strength	Shrinkage	Heat Deflection Temp	Elongation At Break	Flexural Modulus	Mixed Viscocity	Mix Ratio By Volume	Mix Ratio By Weight	Pot Life	Shore D Hardness	Color	Mixed Viscocity	Cure Time	Pot Life	Flexural Strength	Flexural Modulus	Specific Volume	Specific Gravity	Mix Ratio By Weight	Shrinkage	Mix Ratio By Volume	Tensile Strength	Elongation At Break	Shore D Hardness	Heat Deflection Temp	Compressive Strength	Tensile Modulus	Compressive Modulus	Handling Time	Handling Time	Heat Deflection With Post Cure	Heat Deflection With Post Cure	Shore A Hardness	Die C Tear Strength	Hundred Percent Modulus	Hundred Percent Modulus	Die C Tear Strength	Shore A Hardness
TASK™ 2	60 min.	1.12 g/cc	24.7 cu. in./lb.	6,650 psi	290,000 psi	8,300 psi	78,000 psi	9,500 psi	0.005 in. / in.	134 °F	6 %	288,000 psi	150 cps	1A:1B	115A:100B	7 min.	80	White	150 cps	60 min.	7 min.	9,500 psi	288,000 psi	24.7 cu. in./lb.	1.12 g/cc	115A:100B	0.005 in. / in.	1A:1B	6,650 psi	6 %	80	134 °F	8,300 psi	290,000 psi	78,000 psi	-	-	-	-	-	-	-	-	-	-
TASK™ 3	90 min.	1.12 g/cc	24.7 cu. in./lb.	6,650 psi	290,000 psi	8,300 psi	78,000 psi	9,500 psi	0.0025 in. / in.	134 °F	6 %	288,000 psi	150 cps	1A:1B	115A:100B	20 min.	80	White	150 cps	90 min.	20 min.	9,500 psi	288,000 psi	24.7 cu. in./lb.	1.12 g/cc	115A:100B	0.0025 in. / in.	1A:1B	6,650 psi	6 %	80	134 °F	8,300 psi	290,000 psi	78,000 psi	-	-	-	-	-	-	-	-	-	-
TASK™ 4	16 h.	1.167 g/cc	23.9 cu. in./lb.	6,500 psi	130,000 psi	7,400 psi	75,000 psi	9,000 psi	0.0035 in. / in.	110 °F	4 %	204,000 psi	250 cps	-	100A:100B	20 min.	83	Ivory	250 cps	16 h.	20 min.	9,000 psi	204,000 psi	23.9 cu. in./lb.	1.167 g/cc	100A:100B	0.0035 in. / in.	-	6,500 psi	4 %	83	110 °F	7,400 psi	130,000 psi	75,000 psi	-	-	-	-	-	-	-	-	-	-
TASK™ 5	24 h.	1.1 g/cc	25.2 cu. in./lb.	4,530 psi	200,000 psi	6,700 psi	83,000 psi	6,480 psi	0.007 in. / in.	145 °F	5 %	216,000 psi	600 cps	1A:1B	1A:1B	3 min.	77	Tan	600 cps	24 h.	3 min.	6,480 psi	216,000 psi	25.2 cu. in./lb.	1.1 g/cc	1A:1B	0.007 in. / in.	1A:1B	4,530 psi	5 %	77	145 °F	6,700 psi	200,000 psi	83,000 psi	15 min.	15 min.	-	-	-	-	-	-	-	-
TASK™ 6	24 h.	1.07 g/cc	25.9 cu. in./lb.	5,200 psi	146,000 psi	5,570 psi	65,000 psi	6,200 psi	0.0031 in. / in.	162 °F	4 %	182,500 psi	800 cps	1A:1B	1A:1B	7 min.	75	Tan	800 cps	24 h.	7 min.	6,200 psi	182,500 psi	25.9 cu. in./lb.	1.07 g/cc	1A:1B	0.0031 in. / in.	1A:1B	5,200 psi	4 %	75	162 °F	5,570 psi	146,000 psi	65,000 psi	75 min.	75 min.	-	-	-	-	-	-	-	-
TASK™ 7	10 min.	1.2 g/cc	23.1 cu. in./lb.	3,390 psi	150,700 psi	5,140 psi	57,600 psi	5,450 psi	0.0111 in. / in.	131 °F	15.1 %	148,900 psi	200 cps	1A:1B	104A:100B	2.5 min.	73	Off-White	200 cps	10 min.	2.5 min.	5,450 psi	148,900 psi	23.1 cu. in./lb.	1.2 g/cc	104A:100B	0.0111 in. / in.	1A:1B	3,390 psi	15.1 %	73	131 °F	5,140 psi	150,700 psi	57,600 psi	-	-	-	-	-	-	-	-	-	-
TASK™ 8	15 min.	1.09 g/cc	25.4 cu. in./lb.	5,840 psi	246,000 psi	8,760 psi	77,400 psi	8,280 psi	0.01 in. / in.	194 °F	4 %	271,000 psi	100 cps	1A:1B	120A:100B	2.5 min.	80	Off-White	100 cps	15 min.	2.5 min.	8,280 psi	271,000 psi	25.4 cu. in./lb.	1.09 g/cc	120A:100B	0.01 in. / in.	1A:1B	5,840 psi	4 %	80	194 °F	8,760 psi	246,000 psi	77,400 psi	-	-	263 °F	263 °F	-	-	-	-	-	-
TASK™ 11	16 h.	1.12 g/cc	24.7 cu. in./lb.	2,500 psi	-	-	-	-	0.0024 in. / in.	-	100 %	-	2,000 cps	-	100A:100B	20 min.	60	Translucent White	2,000 cps	16 h.	20 min.	-	-	24.7 cu. in./lb.	1.12 g/cc	100A:100B	0.0024 in. / in.	-	2,500 psi	100 %	60	-	-	-	-	-	-	-	-	-	-	-	-	-	-
TASK™ 12	16 h.	1.08 g/cc	26 cu. in./lb.	2,700 psi	-	-	-	-	0.001 in. / in.	-	300 %	-	2,400 cps	-	100A:44B	20 min.	60	Clear Amber	2,400 cps	16 h.	20 min.	-	-	26 cu. in./lb.	1.08 g/cc	100A:44B	0.001 in. / in.	-	2,700 psi	300 %	60	-	-	-	-	-	-	-	-	-	-	-	-	-	-
TASK™ 13	20 min.	1.15 g/cc	24.1 cu. in./lb.	1,800 psi	-	-	-	-	0.005 in. / in.	-	125 %	-	800 cps	-	100A:120B	3 min.	50	Black	800 cps	20 min.	3 min.	-	-	24.1 cu. in./lb.	1.15 g/cc	100A:120B	0.005 in. / in.	-	1,800 psi	125 %	50	-	-	-	-	-	-	-	-	-	-	-	-	-	-
TASK™ 14	45 min.	1.15 g/cc	24.1 cu. in./lb.	1,800 psi	-	-	-	-	0.0035 in. / in.	-	125 %	-	800 cps	-	100A:120B	10 min.	50	Black	800 cps	45 min.	10 min.	-	-	24.1 cu. in./lb.	1.15 g/cc	100A:120B	0.0035 in. / in.	-	1,800 psi	125 %	50	-	-	-	-	-	-	-	-	-	-	-	-	-	-
TASK™ 15	1 h.	1.12 g/cc	24.7 cu. in./lb.	2,720 psi	126,000 psi	5,450 psi	60,000 psi	5,450 psi	0.0042 in. / in.	117 °F	20 %	170,000 psi	600 cps	-	75A:100B	6 min.	75	Opaque White	600 cps	1 h.	6 min.	5,450 psi	170,000 psi	24.7 cu. in./lb.	1.12 g/cc	75A:100B	0.0042 in. / in.	-	2,720 psi	20 %	75	117 °F	5,450 psi	126,000 psi	60,000 psi	-	-	-	-	-	-	-	-	-	-
TASK™ 16	24 h.	1.08 g/cc	25.64 cu. in./lb.	2,264 psi	-	-	-	-	0.0025 in. / in.	-	233 %	-	1,400 cps	-	1A:2B	6 min.	30	Light Yellow	1,400 cps	24 h.	6 min.	-	-	25.64 cu. in./lb.	1.08 g/cc	1A:2B	0.0025 in. / in.	-	2,264 psi	233 %	30	-	-	-	-	90 min.	90 min.	-	-	80	197 pli	855 psi	855 psi	197 pli	80
TASK™ 18	16 h.	1.57 g/cc	17.6 cu. in./lb.	3,250 psi	514,000 psi	8,420 psi	97,300 psi	10,700 psi	0.0006 in. / in.	149 °F	1 %	86,000 psi	4,400 cps	-	26A:100B	20 min.	88	Metal Gray	4,400 cps	16 h.	20 min.	10,700 psi	86,000 psi	17.6 cu. in./lb.	1.57 g/cc	26A:100B	0.0006 in. / in.	-	3,250 psi	1 %	88	149 °F	8,420 psi	514,000 psi	97,300 psi	-	-	-	-	-	-	-	-	-	-
TASK™ 21	1 h.	1.07 g/cc	25.9 cu. in./lb.	5,500 psi	270,000 psi	7,100 psi	78,500 psi	7,100 psi	0.0058 in. / in.	144 °F	7.5 %	250,000 psi	500 cps	2A:1B	2A:1B	6 min.	75	White	500 cps	1 h.	6 min.	7,100 psi	250,000 psi	25.9 cu. in./lb.	1.07 g/cc	2A:1B	0.0058 in. / in.	2A:1B	5,500 psi	7.5 %	75	144 °F	7,100 psi	270,000 psi	78,500 psi	-	-	-	-	-	-	-	-	-	-

Danger