Rubber nano short fiber composite material for automobile tire and preparation method thereof

A technology for automobile tires and composite materials, which is applied in the field of rubber nano-short fiber composite materials for automobile tires and its preparation, can solve the problem of low tensile strength and tensile stress of the composite materials, reducing the reinforcing effect of acicular silicate, and acicular Insufficient silicate modification and other problems, to achieve the effect of high tear strength and tensile stress, small deformation, and improved hardness

Inactive Publication Date: 2011-12-21
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the modification of the acicular silicate by the inventive method is not sufficient enough. In the case of a high dosage, the acicular silicate cannot be completely dissociated into nanofibers, and there will be more aggregates, so that the stretching of the composite material The strength and modulus increase is low, which greatly reduces the reinforcement effect of acicular silicate

Method used

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  • Rubber nano short fiber composite material for automobile tire and preparation method thereof
  • Rubber nano short fiber composite material for automobile tire and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Nano-short fiber rubber composite material for automobile tire apex rubber, the mass parts of each component are:

[0037] 80 parts of natural rubber matrix;

[0038] 20 parts of epoxy natural rubber matrix;

[0039] 69.6 parts of modified palygorskite;

[0040] Soft carbon black N660 40 parts;

[0041] 2 parts paraffin oil;

[0042] 2 parts stearic acid;

[0043] 6 parts of zinc oxide;

[0044] 6 parts of sulfur;

[0045] Antiaging agent: 2 parts of 4010NA;

[0046] Vulcanization accelerator: NS 2 parts;

[0047] The modification method of palygorskite: 60 parts of 1250 mesh palygorskite, 7.2 parts of silane coupling agent γ-(2,3 glycidoxy) propyltrimethoxysilane and 2.4 parts of triethanolamine are added to the reactor, Then add dry ice and put a magnetic stirring bar at the same time. The reaction kettle is sealed and heated in a constant temperature oil bath at a temperature of 80°C until the pressure reaches 13MPa. Turn on the magnetic stirrer and stir for ...

Embodiment 2

[0050] Nano-short fiber rubber composite material for automobile tire apex rubber, the mass parts of each component are:

[0051] 85 parts of natural rubber matrix;

[0052] 15 parts of styrene-butadiene rubber matrix;

[0053] 92 parts of modified palygorskite;

[0054] Soft carbon black N642 30 parts;

[0055] 4 parts paraffin oil;

[0056] 3 parts of stearic acid;

[0057] 6 parts of zinc oxide;

[0058] 2 parts sulfur;

[0059] Antiaging agent: 4 parts of RD;

[0060] Vulcanization accelerator: 4 parts of CZ;

[0061] The modification method of palygorskite: add 80 parts of 1250 mesh palygorskite, 9 parts of vinyltriethoxysilane and 3 parts of triethanolamine into the reaction kettle, then add dry ice, and put a magnetic stirring bar at the same time, and the reaction kettle is sealed And heat it in a constant temperature oil bath at a temperature of 100°C until the pressure reaches 13.5 MPa. Turn on the magnetic stirrer and stir for 1.5 hours. After the reaction i...

Embodiment 3

[0064] Nano-short fiber rubber composite material for automobile tire apex rubber, the mass parts of each component are:

[0065] 90 parts of natural rubber matrix;

[0066] 10 parts of butadiene rubber matrix;

[0067] 38 parts of modified palygorskite;

[0068] Soft carbon black N539 60 parts;

[0069] 3 parts paraffin oil;

[0070] 2 parts stearic acid;

[0071] 5 parts of zinc oxide;

[0072] 5 parts of sulfur;

[0073] Anti-aging agent: 3 parts of 4020;

[0074] Vulcanization accelerator: 3 parts of DM;

[0075] The modification method of palygorskite: 30 parts of 1250 mesh palygorskites, 6 parts of bis-[γ (triethoxysilyl) propyl] tetrasulfide and 2 parts of triethanolamine are added to the reactor, and then dry ice is added. At the same time, put in a magnetic stirring rod, seal the reaction kettle and heat it in a constant temperature oil bath at a temperature of 40°C until the pressure reaches 10MPa. Turn on the magnetic stirrer and stir for 1.5 hours. After th...

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Abstract

The invention relates to a rubber nano short fiber composite material for an automobile tire and a preparation method thereof. By modifying needle-like silicate through a CO2 supercritical method, the needle-like silicate is dissociated into nano short fiber in the process of mixing with a rubber matrix, and soft carbon black is added. The prepared composite material is used as an automobile tireapex, and has the characteristics of high hardness, high modulus, low heat generation, and excellent processability.

Description

Technical field: [0001] The invention relates to a rubber nano-short fiber composite material for automobile tires and a preparation method thereof, which is applied to apex rubber of automobile tires and can obviously improve the hardness and modulus of the apex rubber. Background technique: [0002] At present, my country's automobile tires, especially car tires, are all radial tires, which are subjected to complex stresses during use, requiring extremely high strength and fatigue resistance at the bead. Triangular core rubber (abbreviated as apex rubber) is an important part of the bead, which plays the role of filling, positioning and bearing stress, and its hardness directly affects the rigidity of the bead. The apex rubber is located at the upper end of the bead, and plays the role of filling and strengthening the bead. It not only plays an important role in improving the lateral rigidity distribution of the radial tire, but also has a uniform and flexible transition w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L7/00C08L15/00C08L9/06C08L9/00C08K13/06C08K9/06C08K7/10C08K3/04B60C1/00
CPCY02P20/54
Inventor 田明殷石张立群邹华伍社毛
Owner BEIJING UNIV OF CHEM TECH
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