Rubber compound for elastic node and preparation method thereof

Abstract

The invention discloses a rubber compound for an elastic node. The rubber compound comprises the following components in parts by mass: 60-75 parts of natural rubber, 25-40 parts of solution polymerized styrene-butadiene rubber, 50-60 parts of a reinforcing agent, 5-10 parts of an active agent, 4-8 parts of an anti-aging agent, 2-3.5 parts of a modifier, 3-8 parts of a flame retardant, 5-12 partsof a plasticizer, 1.5-3 parts of a vulcanizing agent and 1.5-3 parts of an accelerant, wherein the sum of the mass parts of the natural rubber and the solution polymerized styrene-butadiene rubber is100 parts. The technical problem that in the prior art, a rubber material for an elastic node cannot meet the combustion performance standards and requirements is solved.

Description

technical field

[0001] The invention belongs to the field of polymer materials, and in particular relates to a rubber compound used for elastic joints and a preparation method thereof. Background technique

[0002] Modern railway vehicles use a large number of rubber elastic components in the suspension system, equipment installation system, connection, and limit positions to play the role of vibration reduction, buffering, flexible connection, and limit. However, the rubber in these components is a combustible material. Once a fire breaks out, the rubber compound will burn and emit a lot of heat and smoke, and the smoke is often toxic to a certain extent, which is not conducive to the evacuation and escape of personnel when the vehicle is on fire. Increased fire safety hazards during fires.

[0003] The European Union issued the fire protection standard EN45545-2 for railway vehicles in 2013. At present, many countries adopt this standard to regulate the fire performance ...

Examples

Embodiment 1

[0047] A rubber compound for elastic joints, the rubber compound component comprises, in parts by mass:

[0048] 75 parts of natural rubber, 25 parts of solution polystyrene butadiene rubber, 3.5 parts of zinc oxide, 1.5 parts of stearic acid, 30 parts of white carbon black, 30 parts of carbon black, 3 parts of anti-aging agent 4010NA, 2 parts of anti-aging agent RD, 3 parts of paraffin , 3.5 parts of modifier, 12 parts of naphthenic oil, 8 parts of high molecular weight crystal form-II ammonium polyphosphate, 1 part of sulfur, 0.5 parts of N, N'-m-phenylene bismaleimide, 1 part of accelerator TBzTD Parts, accelerator TBBS 2 parts.

[0049] Concrete preparation steps are as follows:

[0050] Manufacturing equipment and key process parameters: intermeshing type internal mixer with nominal volume (90-250) L, temperature control unit temperature setting within 30-40 °C, upper jacking bolt pressure 0.45-0.6 MPa. The rotor speed of the internal mixer in the following steps 1 to 5...

Embodiment 2

[0059] A rubber compound for elastic joints, the rubber compound component comprises, in parts by mass:

[0060] 70 parts of natural rubber, 30 parts of solution polystyrene butadiene rubber, 5 parts of zinc oxide, 2 parts of stearic acid, 25 parts of white carbon black, 30 parts of carbon black, 2.5 parts of anti-aging agent 4010NA, 1 part of anti-aging agent RD, 2 parts of paraffin , modifier 2.5 parts, naphthenic oil 8 parts, high molecular weight crystal form-II ammonium polyphosphate 5 parts, sulfur 1.3 parts, N, N'-m-phenylene bismaleimide 0.8 parts, accelerator TBzTD 0.6 Parts, accelerator TBBS 1.6 parts.

[0061] Manufacturing equipment and key process parameters: intermeshing type internal mixer with nominal volume (90-250) L, temperature control unit temperature setting within 30-40 °C, upper jacking bolt pressure 0.45-0.6 MPa. The rotor speed of the internal mixer in the following steps 1 to 5 is 35 to 45 r / min, and the rotor speed of the internal mixer in steps 6 ...

Embodiment 3

[0070] A rubber compound for elastic joints, the rubber compound component comprises, in parts by mass:

[0071] 60 parts of natural rubber, 40 parts of solution polystyrene butadiene rubber, 8 parts of zinc oxide, 2 parts of stearic acid, 20 parts of white carbon black, 30 parts of carbon black, 1.5 parts of anti-aging agent 4010NA, 1 part of anti-aging agent RD, 1.5 parts of paraffin , 2 parts of modifier, 5 parts of naphthenic oil, 3 parts of high molecular weight crystal form-II ammonium polyphosphate, 2 parts of sulfur, 1 part of N, N'-m-phenylene bismaleimide, accelerator TBzTD 0.3 Part, accelerator TBBS 1.2 parts.

[0072] Manufacturing equipment and key process parameters: intermeshing type internal mixer with nominal volume (90-250) L, temperature control unit temperature setting within 30-40 °C, upper jacking bolt pressure 0.45-0.6 MPa. The rotor speed of the internal mixer in the following steps 1 to 5 is 35 to 45 r / min, and the rotor speed of the internal mixer in...

technical field

[0001] The invention belongs to the field of polymer materials, and in particular relates to a rubber compound used for elastic joints and a preparation method thereof. Background technique

[0002] Modern railway vehicles use a large number of rubber elastic components in the suspension system, equipment installation system, connection, and limit positions to play the role of vibration reduction, buffering, flexible connection, and limit. However, the rubber in these components is a combustible material. Once a fire breaks out, the rubber compound will burn and emit a lot of heat and smoke, and the smoke is often toxic to a certain extent, which is not conducive to the evacuation and escape of personnel when the vehicle is on fire. Increased fire safety hazards during fires.

[0003] The European Union issued the fire protection standard EN45545-2 for railway vehicles in 2013. At present, many countries adopt this standard to regulate the fire performance ...

Examples

Embodiment 1

[0047] A rubber compound for elastic joints, the rubber compound component comprises, in parts by mass:

[0048] 75 parts of natural rubber, 25 parts of solution polystyrene butadiene rubber, 3.5 parts of zinc oxide, 1.5 parts of stearic acid, 30 parts of white carbon black, 30 parts of carbon black, 3 parts of anti-aging agent 4010NA, 2 parts of anti-aging agent RD, 3 parts of paraffin , 3.5 parts of modifier, 12 parts of naphthenic oil, 8 parts of high molecular weight crystal form-II ammonium polyphosphate, 1 part of sulfur, 0.5 parts of N, N'-m-phenylene bismaleimide, 1 part of accelerator TBzTD Parts, accelerator TBBS 2 parts.

[0049] Concrete preparation steps are as follows:

[0050] Manufacturing equipment and key process parameters: intermeshing type internal mixer with nominal volume (90-250) L, temperature control unit temperature setting within 30-40 °C, upper jacking bolt pressure 0.45-0.6 MPa. The rotor speed of the internal mixer in the following steps 1 to 5...

Embodiment 2

[0059] A rubber compound for elastic joints, the rubber compound component comprises, in parts by mass:

[0060] 70 parts of natural rubber, 30 parts of solution polystyrene butadiene rubber, 5 parts of zinc oxide, 2 parts of stearic acid, 25 parts of white carbon black, 30 parts of carbon black, 2.5 parts of anti-aging agent 4010NA, 1 part of anti-aging agent RD, 2 parts of paraffin , modifier 2.5 parts, naphthenic oil 8 parts, high molecular weight crystal form-II ammonium polyphosphate 5 parts, sulfur 1.3 parts, N, N'-m-phenylene bismaleimide 0.8 parts, accelerator TBzTD 0.6 Parts, accelerator TBBS 1.6 parts.

[0061] Manufacturing equipment and key process parameters: intermeshing type internal mixer with nominal volume (90-250) L, temperature control unit temperature setting within 30-40 °C, upper jacking bolt pressure 0.45-0.6 MPa. The rotor speed of the internal mixer in the following steps 1 to 5 is 35 to 45 r / min, and the rotor speed of the internal mixer in steps 6 ...

Embodiment 3

[0070] A rubber compound for elastic joints, the rubber compound component comprises, in parts by mass:

[0071] 60 parts of natural rubber, 40 parts of solution polystyrene butadiene rubber, 8 parts of zinc oxide, 2 parts of stearic acid, 20 parts of white carbon black, 30 parts of carbon black, 1.5 parts of anti-aging agent 4010NA, 1 part of anti-aging agent RD, 1.5 parts of paraffin , 2 parts of modifier, 5 parts of naphthenic oil, 3 parts of high molecular weight crystal form-II ammonium polyphosphate, 2 parts of sulfur, 1 part of N, N'-m-phenylene bismaleimide, accelerator TBzTD 0.3 Part, accelerator TBBS 1.2 parts.

[0072] Manufacturing equipment and key process parameters: intermeshing type internal mixer with nominal volume (90-250) L, temperature control unit temperature setting within 30-40 °C, upper jacking bolt pressure 0.45-0.6 MPa. The rotor speed of the internal mixer in the following steps 1 to 5 is 35 to 45 r / min, and the rotor speed of the internal mixer in...

Images