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High-performance cord fabric rubber for tires and preparation method of high-performance cord fabric rubber

A high-performance, cord fabric technology, applied in the rubber field, can solve the problems of various physical properties deterioration, large sulfur, etc., and achieve the effect of reducing heat generation, small hysteresis loss, and reducing compression heat generation.

Pending Publication Date: 2022-04-22
SHANGHAI TIRE & RUBBER TIRE RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that a large amount of sulfur needs to be used, and the physical properties will deteriorate rapidly after aging

Method used

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  • High-performance cord fabric rubber for tires and preparation method of high-performance cord fabric rubber
  • High-performance cord fabric rubber for tires and preparation method of high-performance cord fabric rubber
  • High-performance cord fabric rubber for tires and preparation method of high-performance cord fabric rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] According to formula in table 1, the raw material of preparation embodiment 1 and comparative example 1, comparative example 2

[0033] Table 1 raw material formula

[0034]

[0035]

[0036] According to the formula in Table 1, the cord glue is prepared by the following method:

[0037](1) One stage of mastication: take the respective components by weight according to Table 1, start the internal mixer, set the rotor speed of the internal mixer to 45rpm, the mixing pressure to 10MPa, the cooling water temperature to 30°C, and the rotor temperature to 35°C, then add natural rubber, masticate for 35 seconds to lift up the top bolt, stay for 10 seconds to press on the top bolt, lift the top bolt at the mixing temperature to 145°C, reduce the speed to 30rpm, stay for 15 seconds to press on the top bolt, wait The temperature is up to 160°C to remove the glue, and a section of plain glue is obtained;

[0038] (2) Second-stage master mixing: Start the internal mixer, s...

Embodiment 2

[0047] Embodiment 2 The formula of high-performance cord rubber for tires is as shown in Table 3:

[0048] Table 3 Example 2 Cord Glue Formula

[0049] raw material name parts by weight natural rubber 70.00 Isoprene Rubber 30.00 Carbon black N326 30.00 Carbon black N660 40.00 Silica 165Gr 8.00 A silane coupling agent 0 Antiaging agent 4020 1.00 Antiaging agent RD 1.00 stearic acid 3.00 Cobalt boroacylate 0 magnesium oxide 4.00 Meta-formic resin A250 0 Zinc oxide 10.00 insoluble sulfur 5.40 Accelerator HMT 0 Accelerator NS 1.50 Anti-scorch agent CTP 0.50 Anti-reversion agent 3.0

[0050] According to the formula in Table 3, the cord glue is prepared by the following method:

[0051] (1) One stage of mastication: Weigh each component of the corresponding weight portion, start the internal mixer, set the rotor speed of the internal mixer to be 40rpm, the mix...

Embodiment 3

[0056] Embodiment 3 The formula of high-performance cord rubber for tires is as shown in table 4:

[0057] Table 4 Example 3 Cord Glue Formula

[0058]

[0059]

[0060] According to the formula in Table 4, the cord rubber is prepared by the following method:

[0061] (1) One-stage mastication: Weigh each component of the corresponding weight portion, start the internal mixer, set the rotor speed of the internal mixer to 50rpm, the mixing pressure to 15MPa, the cooling water temperature to 35°C, and the rotor temperature to 40°C. Then add natural rubber and isoprene rubber, masticate for 40 seconds to lift up the top bolt, stay for 15 seconds to press the top bolt, lift the top bolt at the mixing temperature to 150°C, reduce the speed to 35rpm, stay for 20 seconds to press the top bolt, Wait until the temperature reaches 170°C to remove the glue, and get a piece of plain glue;

[0062] (2) Second-stage master mixing: Start the internal mixer, set the rotor speed of the...

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Abstract

The high-performance cord fabric rubber is prepared from the following raw materials in parts by weight: 70 to 100 parts of natural rubber, 0 to 30 parts of isoprene rubber, 0 to 3 parts of stearic acid, 3 to 10 parts of zinc oxide, 1 to 4 parts of magnesium oxide, 0 to 2 parts of cobalt salt, 0 to 2 parts of a methyl donor, 0 to 3 parts of a methyl acceptor, 0.5 to 2 parts of an accelerant, 3 to 5.4 parts of sulfur, 2 to 6 parts of an anti-aging agent, 25 to 70 parts of carbon black, 8 to 35 parts of white carbon black and 0 to 4 parts of a coupling agent. 0-3 parts of an anti-reversion agent and 0-0.5 part of a scorch retarder. Compared with the prior art, the material has good hardness and balance of compression heat generation and elongation at break.

Description

technical field [0001] The invention relates to the technical field of rubber, in particular to a formula of high-performance cord rubber for tires and a preparation method thereof. Background technique [0002] With the implementation of the tire labeling law, the requirements for low rolling resistance, high wear resistance and wet grip resistance of tires have become more stringent. At the same time, more and more attention has been paid to the retreadability of tires. The non-retreading of the tire after the end of its use is generally due to the failure of the tire carcass, especially the crown. Improving the performance of tire cord rubber has become an important topic for tire developers. [0003] In general, high pull-out force is the most basic requirement for cord rubber used in tires. At the same time, it is required to have a good balance of properties such as hardness, elongation, and heat generation. [0004] For steel tires in particular, the cord rubber ne...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): C08L7/00C08L9/00C08K13/04C08K7/26C08K3/04C08K5/18C08K5/3437C08K5/09C08K3/22C08K3/06
CPCC08L7/00C08K2003/222C08K2003/2296C08K2201/014C08K13/04C08K7/26C08K3/04C08K5/18C08K5/3437C08K5/09C08K3/22C08K3/06C08L9/00
Inventor 谢斌蒋琦
Owner SHANGHAI TIRE & RUBBER TIRE RES INST
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