Amorphous Aluminosilicate Reinforcing Material for Rubber

Solution Overview

Problem

Conventional rubber reinforcing materials, such as silica and alumina, face challenges with low dispersibility and aggregate formation, leading to deteriorated mechanical strength and rolling resistance in eco-friendly tires, which affects the abrasion resistance and processability of rubber compositions.

Innovation Solution

Amorphous aluminosilicate particles with specific characteristics, including a full width at half maximum (FWHM) of 3° to 8.5° in X-ray diffraction, average primary particle diameter of 10 to 100 nm, and low micropore volume, are used as reinforcing materials, enhancing dispersibility and mechanical properties while maintaining processability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If precipitated silica is used as rubber reinforcing white additive, then rolling resistance is reduced, but dispersibility decreases due to aggregate formation

Engineering Contradiction:

Improverolling resistanceVSAvoiddispersibility

Core Design Contradiction:

Loss of energyVSStability of the object's composition

Solution Approach 1:

The patent applies parameter changes by controlling the particle size distribution (D10=0.5-2.0 μm, D50=2.0-5.0 μm, D90=5.0-10.0 μm) and specific surface area (50-200 m²/g) of aluminosilicate particles. These parameter optimizations enable the particles to achieve both low rolling resistance and good dispersibility in rubber composition, resolving the contradiction between energy efficiency and compositional stability.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses composite materials by employing aluminosilicate particles with specific crystalline structure and particle size distribution as a hybrid reinforcing filler combining advantages of both silica and alumina. This composite approach allows achieving low rolling resistance while maintaining good dispersibility and abrasion resistance.

Inventive Principle:

Principle #40Composite materials

2Loss of energy

If alumina, clay, or kaolin is applied as rubber reinforcing white additive, then rolling resistance is lowered, but dispersibility decreases due to strong aggregate formation

Engineering Contradiction:

Improverolling resistanceVSAvoidmechanical strength

Core Design Contradiction:

Loss of energyVSStrength

Solution Approach 1:

The patent applies parameter changes by precisely controlling the particle size distribution (D10=0.5-2.0 μm, D50=2.0-5.0 μm, D90=5.0-10.0 μm) and specific surface area (50-200 m²/g) of aluminosilicate particles. These parameter optimizations enable the particles to achieve both low rolling resistance and good dispersibility in rubber composition, resolving the contradiction between energy efficiency and compositional stability.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses composite materials by employing aluminosilicate particles with specific crystalline structure and particle size distribution as a hybrid reinforcing filler combining advantages of both silica and alumina. This composite approach allows achieving low rolling resistance while maintaining good dispersibility and abrasion resistance.

Inventive Principle:

Principle #40Composite materials

3Strength

If highly dispersed precipitated silica is used with silane coupling agent, then abrasion resistance is improved, but dispersibility remains low

Engineering Contradiction:

Improveabrasion resistanceVSAvoiddispersibility

Core Design Contradiction:

StrengthVSStability of the object's composition

Solution Approach 1:

The patent applies parameter changes by precisely controlling the particle size distribution (D10=0.5-2.0 μm, D50=2.0-5.0 μm, D90=5.0-10.0 μm) and specific surface area (50-200 m²/g) of aluminosilicate particles. These parameter optimizations enable the particles to achieve both low rolling resistance and good dispersibility in rubber composition, resolving the contradiction between energy efficiency and compositional stability.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses composite materials by employing aluminosilicate particles with specific crystalline structure and particle size distribution as a hybrid reinforcing filler combining advantages of both silica and alumina. This composite approach allows achieving low rolling resistance while maintaining good dispersibility and abrasion resistance.

Inventive Principle:

Principle #40Composite materials

Data Source

PatentUS10875980B2Reinforcing material for rubber comprising aluminosilicate particles and rubber composition for tires comprising the same

Publication Date: 2020.12.29 LG CHEM LTD

AI summary

The present disclosure relates to a reinforcing material for rubber including aluminosilicate particles and a rubber composition for tires including the same. The reinforcing material for rubber according to the present disclosure exhibits excellent dispersibility in the rubber composition and reinforcing effect, and thus can be suitably used for eco-friendly tires requiring high efficiency and high fuel efficiency characteristics.