Functionalized Graphene Oxide Rubber for Tooth-Scar-Free Tooth Blocks

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Solution Overview

Problem

Existing nitrile rubber used in drilling tools for oil and gas production suffers from limited temperature range, leading to reduced mechanical properties and poor interfacial compatibility between fillers and rubber, resulting in tooth scars and tool failure.

Innovation Solution

Functionalized graphene oxide nitrile rubber with a specific composition and preparation method that enhances mechanical properties and temperature range, using a combination of functionalized graphene oxide, epoxy resin, and other additives to form a local interpenetrating network structure.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If nitrile rubber is used in high temperature environment, then the service temperature range is extended, but the mechanical properties and aging resistance are reduced

Engineering Contradiction:

Improveservice temperature rangeVSAvoidmechanical properties

Core Design Contradiction:

TemperatureVSStrength

Solution Approach 1:

The patent uses functionalized graphene oxide as a filler to create a composite rubber material. The functionalized graphene oxide forms an interpenetrating network structure with the rubber matrix, providing reinforcement that maintains mechanical properties even at elevated temperatures, thus resolving the contradiction between extending service temperature range and maintaining strength.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent modifies the rubber compound by incorporating specific additives and fillers (functionalized graphene oxide, epoxy resin, silane-modified polyethylene) in optimized proportions. This changes the physical and chemical parameters of the rubber compound, enabling it to maintain mechanical integrity across a wider temperature range while resisting thermal aging.

Inventive Principle:

Principle #35Parameter changes

2Strength

If conventional fillers are used to enhance mechanical properties, then the mechanical strength is improved, but the interfacial compatibility between filler and rubber deteriorates

Engineering Contradiction:

Improvemechanical strengthVSAvoidinterfacial compatibility

Core Design Contradiction:

StrengthVSStability of the object's composition

Solution Approach 1:

The patent applies surface functionalization to the graphene oxide, transforming it from a conventional filler with poor interfacial compatibility to a functionalized filler with optimized surface properties. This parameter change in the filler's surface chemistry enables strong interfacial bonding with the rubber matrix while maintaining enhanced mechanical strength.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The functionalized graphene oxide acts as an intermediary between the rubber matrix and other fillers (epoxy resin, silane-modified polyethylene). Its functional groups facilitate interfacial compatibility and promote the formation of an interpenetrating network structure, ensuring uniform stress distribution and preventing filler aggregation.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Temperature

If silica is used to improve heat resistance, then the heat resistance is enhanced, but the weather resistance and color stability deteriorate due to yellowing

Engineering Contradiction:

Improveheat resistanceVSAvoidweather resistance and color stability

Core Design Contradiction:

TemperatureVSObject-affected harmful factors

Solution Approach 1:

The patent creates a multi-component composite system where functionalized graphene oxide works synergistically with epoxy resin and silane-modified polyethylene. This composite structure provides heat resistance through the functionalized filler network while the epoxy resin and silane components protect against weathering and prevent yellowing, thus resolving the contradiction between heat resistance and weather resistance.

Inventive Principle:

Principle #40Composite materials

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The functionalized graphene oxide nitrile rubber provides improved mechanical properties, wider temperature range, and better filler dispersion, resulting in a tooth-scar-free tooth block with enhanced stability and reduced defects.

Implementation Method 1

using a combination of functionalized graphene oxide, epoxy resin, and other additives to form a local interpenetrating network structure

Methodology Applied

Scientific EffectInterpenetrating network structure formation: Composite Materials

Implementation Method 2

1.8-2.52 parts of vulcanizing agent, 1.2-1.68 parts of vulcanization accelerator, 5-7 parts of vulcanization activator

Methodology Applied

Scientific EffectVulcanization: Chemical Bonding

Data Source

PatentUS12509573B2Functionalized graphene oxide nitrile rubber and tooth-scar-free tooth block

Publication Date: 2025.12.30 JIANHU KAITAI PETROLEUM MASCH CO LTD

AI summary

A functionalized graphene oxide nitrile rubber and A tooth-scar-free tooth block is provided. The functionalized graphene oxide nitrile rubber comprises the following components in parts by weight: 100-140 parts of nitrile rubber, 30-90 parts of a functionalized graphene oxide nitrile rubber masterbatch, 1.8-2.52 parts of a vulcanizing agent, 1.2-1.68 parts of a vulcanization accelerator, 5-7 parts of a vulcanization activator, 17-23.8 parts of a plasticizer, 2-2.8 parts of antioxidant, 59-86.6 parts of a filler, 0.1-0.14 parts of a curing agent, and 2-2.8 parts of dichlorophenol. The functionalized graphene oxide nitrile rubber above has excellent mechanical properties, a wide applicable temperature range and strong stability in use, and can be prepared into a tooth-scar-free tooth block.