TECNOTHANE® MDE 282 G

Tecnothane® MDE282G has been designed to show excellent properties for parts working in harsh environments, requiring resistant and efficient materials. For this reason it fits particularly well with mining-grade and technical application, such as sieves, scrapers, screens, etc. and it shows a reaction profile oriented to mass production. “G” series is designed for improved abrasion resistance.

The purpose of the following table is only to provide indicative data about material properties. Typical properties are referred to samples prepared according to internal conditions and measured thirty days after post curing.

ISO 7619-1
Hardness (ShA)	30±2	35±2	40±2	45±2	50±2	55±2	65±2	70±2	75±2	80±2	85±2	90±2	95±2
Hardness (ShD)	/	/	/	/	/	/	/	/	27±2	32±2	35±2	42±2	51±2
ISO 2781
Density (g/cm³)	1.22	1.22	1.22	1.22	1.22	1.22	1.22	1.22	1.22	1.22	1.22	1.22	1.22
ISO 37 (Tensile)
Modulus 50% (N/mm²)	0.5	0.5	1.0	1.0	1.5	1.5	2.0	2.0	2.5	3.5	4.5	5.0	6.0
Modulus 100% (N/mm²)	1.0	1.0	1.5	1.5	2.0	2.0	2.5	3.0	4.5	5.0	6.0	7.0	8.0
Modulus 300% (N/mm²)	1.5	2.0	2.0	2.5	3.0	4.0	4.5	5.5	7.0	8.5	9.5	11.0	12.0
Tensile strength (N/mm²)	4.0	5.0	8.0	12.0	16.0	25.0	30.0	35.0	38.0	39.0	40.0	45.0	47.0
Elongation (%)	800	800	800	770	750	660	660	660	660	650	650	650	650
ISO 34-1 (Tear strength)
DIE B/a (kN/m), 90° without nick	9	12	15	18	23	35	44	51	60	66	72	80	91
DIE B/b (kN/m), 90° with nick	5	7	9	12	16	20	23	25	27	29	35	43	55
DIE C (kN/m), crescent with nick	7	9	12	15	23	36	45	52	61	68	74	82	93
ISO 4662
Rebound resilience (%)	/	/	/	70	65	58	58	55	55	53	52	50	49
ISO 815
Compression set at 70ºC / 23h (%)	/	/	/	10	12	12	14	15	16	16	18	20	23
ISO 4649
Abrasion resistance (mg)	/	/	/	55	40	25	24	24	23	23	25	27	27

Do not allow excessive cooling of molded parts between demolding and post-curing.

Hardness (ShA)	Temperature (°C)	Time (hours)
From 55 to 74	70	16
Higher than 75	90	16

For hardness ≤ 78 ShA it is recommended to wait 24 h at room temperature before the post-curing cycle.
For hardness above 93 ShA, two annealing steps are recommended to quickly reach the best performances; let the material cool down to room temperature in between the 2 post curing processes.

Hardness (ShA)	MDE282G	R562	RT140	PLC9100	Catalyst (%)	Molds T (°C)	Pot life (sec)	Demolding (min)
30	100.00	251.80	-	72.65	1.50	95-105	150-180	35-40
35	100.00	260.85	-	56.70	1.40	95-105	150-180	35-40
40	100.00	268.70	-	45.85	1.35	95-105	150-180	35-40
45	100.00	276.85	-	32.90	1.30	95-105	150-180	35-40
50	100.00	288.40	-	-	1.25	95-105	150-180	35-40
55	100.00	167.50	5.20	-	1.20	95-105	150-180	35-40
60	100.00	148.15	6.80	-	1.10	95-105	150-180	35-40
65	100.00	117.05	9.10	-	1.00	95-105	150-180	35-40
70	100.00	110.20	9.75	-	0.90	95-105	150-180	35-40
75	100.00	100.70	10.60	-	0.80	95-105	150-180	35-40
80	100.00	85.35	11.80	-	0.70	95-105	150-180	35-40
85	100.00	68.85	13.05	-	0.60	105-115	150-180	35-40
90	100.00	57.05	13.95	-	0.50	105-115	105-125	35-40
95	100.00	44.95	14.80	-	0.45	105-115	90-105	35-40

The amount of main components is given on parts by weight.
Pot life and demolding time are referred to the system with the recommended amount of catalyst, Tecnokat T24 can be used to adjust pot life and demolding time.

Materials are available in following packaging: 25, 50 or 200 kg

• In order to allow complete melting, pre-heat materials at following conditions (melting times are referred to 200 kg drums,stored at 20°C)

Pre-heating temperature (°C)	50 - 60
Pre-heating time (hours)	16

• After pre-heating, make sure all materials are completely melted.
• Well mix melted material by drilling or rolling the drum
• Load materials to the machine immediately after mixing.
• Materials must be stored under nitrogen blanket after use.