Home Appliance Industry – Silicone Product Application Solutions

作者 Gubang | Jul 24, 2026

Scope: Air conditioners, refrigerators, washing machines, kitchen appliances, small appliances and smart home products across all categories

1. Home Appliance Industry Overview

1.1 Home Appliance Industry Trends

China is the world's largest home appliance production and consumption market, with total industry output value exceeding RMB 1.8 trillion in 2025. Driven by the "dual-carbon" strategy, continuously rising energy-efficiency standards and the accelerating shift toward smart and premium products, home appliances are moving comprehensively toward inverter-driven high efficiency, smart connectivity, top-tier energy ratings and compact design.

As indispensable functional materials in appliance manufacturing, electronic silicones play a key role in power module cooling, control board protection, structural sealing and sensor protection. In new-generation products such as inverter air conditioners, large-capacity refrigerators and washer-dryer combos in particular, the requirements for thermal conductivity, insulation, flame retardancy and weather resistance far exceed traditional levels.

1.2 Core Value of Electronic Silicones in Home Appliances

Value Dimension

Application

Benefit

Heat Dissipation

IPM power module, IGBT and LED backlight cooling

Reduces temperature rise by 20~40℃ and raises the energy-efficiency rating

Insulation Protection

Insulation coating of power and control boards, transformer potting

3kV withstand voltage, creepage prevention, safety-certification compliant

Sealing and Moisture Protection

Washing machine control box sealing, refrigerator door gasket bonding

IP67 protection, condensation resistance, 10-year service life

Vibration and Noise Reduction

Compressor damping washers, silicone fan cushioning

Noise reduced by 2~5dB(A)

Fire Safety

Power supply potting, terminal encapsulation

UL94 V-0, passes the glow-wire test

Mould and Weather Resistance

Outdoor air conditioner control boxes, outdoor sensors

500h salt spray plus UV ageing, mould rating 0

1.3 Appliance Categories and Silicone Demand Mapping

Air conditioners (inverter / central): IPM/SiC cooling → control board conformal coating → outdoor unit control box sealing → sensor pottingRefrigerators / freezers: compressor terminal box → control board potting → door gasket bonding → ice maker sealsWashing machines / dryers: inverter motor stator potting → control box waterproofing → inlet valve sealing → door gasketKitchen appliances (induction cooker / microwave / oven): power board cooling → touch panel bonding → high-temperature seals → sensor protectionSmall appliances (rice cooker / water purifier / vacuum cleaner): heating base thermal interface → control board conformal coating → switching power supply potting

2. Product Portfolio Overview

2.1 Core Product Series

Product Series

Product Name

Typical Model

Key Features

High-Conductivity Thermal Grease

Power module thermal grease

MT-3202/3204/3205

Thermal conductivity 2.0~4.6 W/m·K, low oil bleed, insulating

Thermally Conductive Potting Compound

Power supply / control unit potting compound

MT-2804/2807

Thermal conductivity 0.8~1.5 W/m·K, V-0 flame retardant, low-stress

Appliance-Grade Sealant

MT-704A

IP68, mould rating 0, 10-year weather resistance

Thermally Conductive Adhesive

Heat sink bonding and fixing

MT-1300

Thermal conductivity 1.5 W/m·K with bond strength >5MPa

Insulating Potting Compound

Low-voltage apparatus potting

MT-2806

Dielectric strength >25kV/mm, Class H insulation

High-Temperature Seal Ring

High-temperature silicone seal ring

-60℃ to 300℃, food-grade option available

2.2 Technical Advantages

Dedicated IPM/SiC thermal grease: 5.0 W/m·K high conductivity, temperature range -55℃ to 200℃

V-0 flame-retardant potting: own UL Yellow Card, passes the 750℃ glow-wire test

Mould-rating-0 sealant: passes the 28-day ASTM G21 mould growth test

Reworkable conformal coating: peelable silicone coating for easy rework

Food-grade option: the full range can be customised to NSF/FDA food-grade certification

3. Air Conditioner Thermal Management Solutions

Figure 3-1 Thermal Management and Sealing Solution for Appliance Controllers

Figure 3-2 Compressor Cooling and Distribution of Appliance Requirements

3.1 IPM/SiC Power Module Thermal Solution

Application: interface between the back of the IPM (Intelligent Power Module) of an inverter air conditioner and the heat sinkRecommended product: MT-3205 high-conductivity thermal grease (5.0 W/m·K)

Parameter

MT-3205

Benchmark Product

Industry Requirement

Thermal Conductivity

4.6 W/m·K

2.5~3.5

≥3.0

Thermal Resistance (@50psi)

0.04 ℃·cm²/W

0.08~0.12

≤0.10

Oil Bleed (150℃/24h)

<0.3%

0.5~1.5%

≤0.5%

Dielectric Strength

>10 kV/mm

Long-Term Reliability (150℃/1000h)

Thermal resistance change <3%

5~10%

<10%

Application process:

Stencil printing or dispenser application, thickness controlled to 80~120μm
IPM module mounting screw torque 0.3~0.5 N·m
Cure: none required, ready for immediate assembly
Verification: thermal imaging confirms a module-to-heat-sink temperature difference <5℃

3.2 Air Conditioner Control Board Conformal Coating Solution

Test Item

Protection Achieved

Moisture Resistance

85℃/85%RH 1000h

Insulation ≥100MΩ

Salt Spray Resistance

144h neutral salt spray

No corrosion

Mould resistance: ASTM G21 rating 0
Coating thickness: 40~80μm
UV tracer: coverage inspectable under a 365nm UV lamp
Reworkable: locally peelable for repair

3.3 Outdoor Unit Control Box Sealing Solution

Application: enclosure sealing of the air conditioner outdoor unit control boxRecommended product: MT-704A mould-resistant sealant

Performance

Standard

Ingress Protection

IP67

Mould Rating

ASTM G21 rating 0

Temperature Resistance

-40℃~150℃

UV Resistance

1000h with no cracking or chalking

Flame Retardancy

V-0

Application Method

FIPG (formed in place)

4. Refrigerator Solutions

4.1 Refrigerator Control Board Potting Solution

Application: refrigerator main control board and inverter power boardRecommended product: MT-2804 low-stress thermally conductive potting compound

Parameter

MT-2804

Suitability

Thermal Conductivity

0.8 W/m·K

Enhanced heat dissipation

Flame Rating

UL94 V-0

Fire safety

Cure Shrinkage

<0.2%

No damage to components

Working Time

40min

Ample

Potting process:

Clean and dry the PCBA
Position the housing / mould
Vacuum degassing and low-pressure pouring
Cure 24h at room temperature or 80℃ × 1h

4.2 Refrigerator Terminal Sealing Solution

Recommended product: MT-2806 insulating potting compoundApplications:

Compressor terminal box
Evaporator / condenser temperature probe potting
Ice maker solenoid valve terminal protectionKey requirements:
Dielectric strength ≥20kV/mm
No cracking at -40℃
UL94 V-0 flame retardancy

4.3 Door Gaskets and Display Panels

Recommended products: MT-704A / MT-1301 thermally conductive adhesiveApplications:

Door gasket end bonding and sealing
Display panel bezel bonding
LED strip thermal bonding
Ice maker water circuit seals

5. Washing Machine Solutions

5.1 Inverter Motor Stator Potting Solution

Application: stator end windings of DD direct-drive / BLDC inverter motorsRecommended product: MT-2806 high-conductivity potting compound

Parameter

MT-2806

Thermal Conductivity

1.2 W/m·K

Flame Retardancy

UL94 V-0

Viscosity

3000 cP

Hardness

Shore D 45

Temperature Resistance

-40℃~180℃

Water Resistance

IPX7 waterproof

5.2 Washing Machine Control Box Waterproofing Solution

Application: enclosure sealing of top- or front-mounted washing machine control boxesRecommended product: MT-704A mould-resistant sealantSpecial requirements:

Long-term humid environment (80%RH+)
Chemical resistance to detergents and fabric softeners
Mould rating 0, IP67 protection
Seal service life ≥10 years

5.3 Sensor and Door Lock Sealing

Recommended product: MT-704AApplications:

Water level sensor sealing
Door lock micro-switch sealing
Inlet valve coil potting
Heating element terminal sealing

6. Kitchen and Small Appliance Solutions

6.1 Induction Cooker / IH Heating Control Solution

Application: IH induction coil control board and IGBT module coolingRecommended product: MT-3205 high-conductivity thermal grease

Heating Appliance

Cooling Location

6.2 Kitchen Appliance Control Board Protection Solution

6.3 Touch Panel and Display Bonding

Recommended product: MT-1301 thermally conductive adhesiveApplications:

Thermal bonding of induction cooker glass-ceramic panels to the heating coil
Range hood touch key panels
Washing machine LED display bezels
Water purifier temperature display panels

7. Smart Home and Display Panel Solutions

7.1 Smart Speaker / Smart Gateway Cooling

Recommended product: MT-3202 medium-high conductivity thermal grease (2.0 W/m·K)Applications:

Main chip / PA amplifier to heat sink interface
Voice module thermal management
Power module cooling

7.2 Smart Panels and Sensor Modules

7.3 Appliance LED Backlight Module Cooling

Recommended product: MT-3202 thermal greaseApplications:

TV / monitor LED backlight cooling
Appliance LED status indicators and ambient lighting
Refrigerator / wine cooler LED lighting

8. Selection Guide and Technical Data Comparison

8.1 Quick Selection Matrix

Application

Primary Requirement

8.2 Product Selection Flowchart

Appliance silicone selection ─┬─ Heat dissipation ─┬─ IPM/SiC module → MT-3205 (5.0 W/m·K) │ ├─ IGBT / power device → MT-3202 (2.0 W/m·K) │ └─ LED / small device → MT-3202 / MT-1301 │ ├─ Protection ─┬─ Control board potting → MT-2804 / MT-2806 (V-0) │ ├─ PCBA coating → PC200 (conformal coating) │ └─ Enclosure sealing → MT-704A (IP67 + mould resistance) │ ├─ Insulation ── Terminal box / terminals → MT-2806 (25kV/mm) │ ├─ Bonding ── Thermal + fixing → MT-1301 (1.5 W/m·K + 5MPa) │ └─ Seal rings ── High temperature / food grade → HT series (-60℃~300℃)

9. Competitive Advantages

9.1 Technical Advantages

Dedicated IPM/SiC thermal grease: 5.0 W/m·K with oil bleed <0.3% at 200℃, eliminating contamination

Full V-0 flame-retardant range: potting compounds and conformal coatings are all UL94 V-0 certified

Mould-rating-0 sealant: 28-day ASTM G21 testing, validated by 10 years of outdoor service

Low-stress formulation: potting modulus of 2~5MPa causes no damage to electrolytic capacitors or ICs

Food-grade customization: optional NSF/FDA certification to meet food-contact requirements for kitchen appliances

9.2 Quality Advantages

Quality Dimension

Industry Standard

Maxtor Level

Batch Cpk

≥1.33

≥1.67

Thermal Conductivity Tolerance

±0.2 W/m·K

±0.15

Viscosity Tolerance

±20%

±10%

Flame Certification

V-0 (self-declared)

V-0 (UL Yellow Card)

9.3 Service Advantages

Free samples: trial samples matched to the customer's production line dispatched within 24 hours
On-site presence: engineers stationed on site during the first mass-production run to guide the process
UL certification support: UL Yellow Card and other safety-compliance documents provided
VAVE optimization: continuous material cost-reduction proposals
Joint development: custom formulations for new appliance types (new national energy-efficiency standards, R290 refrigerant, etc.)

10. Representative Case Studies

Case 1: IPM Thermal Solution Upgrade for an Inverter Air Conditioner

Customer background:

A leading domestic air conditioner brand launching a new R32 inverter platform

Requirement:

IPM module heat density increased by 40%; junction temperature had to be reduced by 25℃

Solution:

Switched to MT-3205 (5.0 W/m·K) and optimised the printed layer to 100μm

Results:

IPM junction temperature reduced by 28℃; service life extended 1.5 times
APF energy efficiency improved by 0.15, reaching Grade 1 of the new national standard
Over 2 million units mass-produced; after-sales failure rate down 60%

Case 2: Localising Inverter Motor Potting for a Washing Machine Maker

Customer background:

The DD direct-drive motor line of a well-known domestic washing machine brand

Requirement:

The imported potting compound previously used was costly with lead times of 30+ days

Solution:

MT-2806 adopted as a replacement, with the formulation adapted to a vertical drip-potting process

Results:

Cost reduced 40% and lead time shortened to 7 days
Waterproof rating of IPX7 achieved (1m immersion for 30min)
Stator temperature down 12℃; motor efficiency up 1.2%

Case 3: IGBT Thermal Solution for Induction Cookers

Customer background:

A major induction cooker OEM producing 5 million units per year

Requirement:

Oil bleed from the IGBT thermal grease contaminated the glass-ceramic panel under prolonged high temperature

Solution:

MT-3205 low-oil-bleed formulation combined with a precision stencil printing process

Results:

Oil bleed reduced from 1.2% to 0.3%
Panel contamination return rate reduced from 3% to 0.1%
Thermal grease consumption cut by 25% through precise application control

11. Technical Service System

11.1 Pre-Sales Services

Service

Description

Response Time

Technical Consultation

Selection + solution design + thermal simulation

Within 2 hours

Free Samples

Trial samples matched to the customer's appliance module

Within 24 hours

Application Testing

Trial runs and testing on actual appliances

3 business days

Process Plan

Application process plan + SOP

5 business days

On-Site Visit

Technical exchange + production line assessment

Within 1 week

11.2 Services During Delivery

First-run on-site support: engineers guide the production ramp-up on site
Operator training: SOP preparation + on-site training
Equipment integration: parameter packages for dispensing, coating and potting equipment
Quality documentation: MSDS/TDS/COA/UL/RoHS/REACH

11.3 After-Sales Services

Quarterly reviews: quality follow-up + joint assessment
Batch traceability: retained samples kept for 5 years with complete records
Failure analysis: 24h response + 8D report
Technical upgrades: new formulations + cost-reduction proposals

We are committed to providing the home appliance industry with professional, end-to-end thermal, potting, sealing and protection solutions

Home Appliance Industry – Silicone Product Application Solutions

Table of Contents

1. Home Appliance Industry Overview

1.1 Home Appliance Industry Trends

1.2 Core Value of Electronic Silicones in Home Appliances

1.3 Appliance Categories and Silicone Demand Mapping

2. Product Portfolio Overview

2.1 Core Product Series

2.2 Technical Advantages

3. Air Conditioner Thermal Management Solutions

3.1 IPM/SiC Power Module Thermal Solution

3.2 Air Conditioner Control Board Conformal Coating Solution

3.3 Outdoor Unit Control Box Sealing Solution

4. Refrigerator Solutions

4.1 Refrigerator Control Board Potting Solution

4.2 Refrigerator Terminal Sealing Solution

4.3 Door Gaskets and Display Panels

5. Washing Machine Solutions

5.1 Inverter Motor Stator Potting Solution

1.2 W/m·K

5.2 Washing Machine Control Box Waterproofing Solution

5.3 Sensor and Door Lock Sealing

6. Kitchen and Small Appliance Solutions

6.1 Induction Cooker / IH Heating Control Solution

6.2 Kitchen Appliance Control Board Protection Solution

6.3 Touch Panel and Display Bonding

7. Smart Home and Display Panel Solutions

7.1 Smart Speaker / Smart Gateway Cooling

7.2 Smart Panels and Sensor Modules

7.3 Appliance LED Backlight Module Cooling

8. Selection Guide and Technical Data Comparison

8.1 Quick Selection Matrix

8.2 Product Selection Flowchart

9. Competitive Advantages

9.1 Technical Advantages

9.2 Quality Advantages

9.3 Service Advantages

10. Representative Case Studies

11. Technical Service System

11.1 Pre-Sales Services

11.2 Services During Delivery

11.3 After-Sales Services