Foamable rubber composition
A composition and rubber technology, applied in the field of foam articles and the manufacture of foam articles, can solve problems such as health and environmental hazards
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example 1
[0092] The compositions of Examples 1 to 7 were prepared using an internal mixer (Shaw K1 Mark IV Intermix) with a capacity of 3 liters having intermeshing rotor blades and having a start temperature of 25°C. The elastomeric polymer was first introduced into the mixer and allowed to comminute for a period of 30 seconds before adding the carbon black, white filler and / or oil. Mixing was allowed to proceed until a temperature of 70°C was reached, at which point the remaining ingredients were added. Mixing was allowed to proceed up to a mixing temperature of 95°C, at which point the batches were transferred to a two-roll mill for cooling and blending to obtain a high level of dispersion of ingredients. Incorporation of CaSO on a two-roll mill (Troester WNU 2) 4 2H 2 O. The compositions were compression molded into 2 mm sheets (10 min, 180°C) and 6 mm sheets (12 min, 180°C) for testing purposes. These test pieces were used to determine the physical properties reported in Table...
example 8
[0101] The compositions of Example 8 and comparative experiments were prepared using an internal mixer (Farrel Bridge 3D Banbury) with a capacity of 70 liters with tangential rotor blades and a start temperature of 25°C. The elastomeric polymer was first introduced into the mixer and allowed to comminute for a period of 30 seconds before adding the carbon black, white filler and oil. Mixing was allowed to proceed until a temperature of 70°C was reached, at which point the remaining ingredients were added. Mixing was allowed to proceed up to a mixing temperature of 95°C, at which point the batches were transferred to a two-roll mill for cooling, and blended to obtain a good level of dispersion of ingredients.
[0102] Mooney value measurements were performed using an Alpha Technologies MV2000E.
[0103] table 3
[0104]
[0105] 8) 75% azo polymer bound on the EPM carrier; 9) 75% OBSH polymer bound on the EPM carrier;
[0106] Extrusion, foaming and curing
[0107] T...
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