Huizhou Pengchengrui Technology Co., Ltd.

Composite materials with memory properties mainly refer to Shape Memory Composites (SMCs), which combine the intelligent response characteristics of shape memory materials with the advantages of high specific strength and stiffness of composite materials. They have wide applications in aerospace, medical devices, intelligent structures, and other fields.

1、 Main types

1. Shape memory alloy based composites (SMA composites)

Matrix: Shape memory alloys such as titanium nickel (TiNi) and copper zinc aluminum (CuZnAl)

Reinforcement: carbon fiber, glass fiber, ceramic particles

Features: High resilience, high response frequency, able to withstand large loads

Typical applications:

• Aircraft wing leading edge de icing system

• Adaptive vibration control device

  Intelligent fasteners and connectors

Nickel titanium memory alloy

2. Shape memory polymer based composites (SMP composites)

Matrix: Shape memory polymers such as epoxy resin, polyurethane, polylactic acid, etc

Enhancers: carbon fiber, glass fiber, graphene

Features: Large deformation, good processability, low cost

Typical applications:

• Expandable spatial structures (satellite antennas, solar sails)

• Medical stents and sutures

• Intelligent packaging materials

Nickel titanium alloy carbon fiber composite material

3. Other new types of memory composite materials

Magnetron shape memory composite material: shape recovery triggered by magnetic field

Light controlled shape memory composite material: remote control achieved through photothermal conversion

Multi field responsive composite materials: capable of simultaneously responding to various stimuli such as temperature, light, electricity, and magnetism

2、 Application Fields

• Aerospace: Variable wing structure, adaptive wing, deployable space structure

• Biomedical: Minimally invasive interventional devices, self fixing bone repair materials, intelligent rehabilitation equipment

• Automotive industry: active shock absorption system, collision energy absorption device

• Intelligent Building: Adaptive Soundproofing/Insulation Structure, Intelligent Window Control System

• Electronic devices: deformable display screen bracket, intelligent heat dissipation structure

3、 Performance characteristics

Bidirectional memory effect: reversible conversion between two shapes

• Multi stimulus response: multiple triggering methods such as temperature, light, electricity, and magnetism

• Structural integration: combining load-bearing and driving functions, reducing the number of components

• High design freedom: performance parameters can be optimized through material combination

The core of composite materials with memory properties is to combine shape memory materials (such as alloys, polymers, ceramics) with other reinforcing phases (such as fibers, particles, nanomaterials) to optimize the mechanical properties (strength, toughness), functional stability, or expand new characteristics (such as conductivity, thermal conductivity, self-healing) of a single shape memory material. In the future, the development direction of memory property composite materials will focus on high temperature stability (breaking through SMP above 200 ℃), high recovery (SMP close to SMA), and multifunctional integration (memory+conductivity+self-healing), further promoting their applications in high-end manufacturing, biomedicine, deep space exploration and other fields.