Paint chemicals

Flexible Resins: Overview and Key Properties

Category	Details
Chemical Type	Elastomeric polymers (silicones, polyurethanes, etc.)
Curing Mechanism	UV, thermal, or two-part curing
Appearance	Clear, translucent, or colored liquids
Key Feature	High elasticity & impact resistance

Common Types & Properties

Resin Type	Elongation at Break	Shore Hardness	Primary Use
Flexible Polyurethane	150–600%	A30–A90	Prototypes, gaskets
Silicone Rubber	300–1000%	A10–A50	Medical devices, molds
TPE (Thermoplastic Elastomer)	200–800%	A60–D50	Consumer products
Epoxy Hybrid	50–200%	D30–D70	Impact-resistant coatings

Performance Characteristics

Property	Typical Value
Tensile Strength	1–15 MPa
Tear Strength	10–50 kN/m
Rebound Elasticity	30–80%
Minimum Bend Radius	1–5 mm

Processing Methods

Method	Conditions	Cure Time
UV Curing	365–405 nm light	10–60 sec
Thermal Curing	60–120°C	1–24 hrs
Two-Part Mixing	RT (Room Temp)	5 min–6 hrs

Applications

Industry	Use Cases	Key Benefit
3D Printing	Wearables, prosthetics	High detail flexibility
Automotive	Seals, vibration dampers	Durability
Medical	Soft-tissue models	Biocompatibility
Consumer Goods	Phone cases, toys	Shock absorption

Advantages vs. Rigid Resins

Feature	Flexible Resins	Rigid Resins
Impact Resistance	Excellent	Poor
Durability	High (flex cycles)	Brittle
Applications	Dynamic parts	Structural parts

Safety & Handling

Parameter	Guidelines
Skin Contact	Low toxicity (silicones); PPE for polyurethanes
VOC Emissions	Low (UV-curable) to moderate (two-part)
Storage	6–12 months (avoid UV/heat)

Market Data

Segment	Market Share	Growth Rate (CAGR)
3D Printing	40%	9.2%
Medical	25%	7.5%
Industrial	35%	6.8%

Key Benefits & Limitations

Advantages	Limitations
Extreme durability under stress	Lower tensile strength than rigid resins
Realistic material feel	Longer curing times (some types)
Wide range of hardness options	Higher cost than standard resins

Summary

Flexible resins enable innovative applications requiring elasticity and toughness, from medical simulations to functional prototypes. Advances in UV-curable formulations are driving adoption in 3D printing, while silicones remain dominant in healthcare.

This product is a modified epoxy resin product with excellent flexibility performance.

By grafting flexible soft segments at the end of the epoxy polymer molecular structure, it solves the problems of decreasing the internal strength of the cured product, decreasing the electrical and chemical resistance properties, and cracking the product after adding plasticizer to the traditional formula.

Self-contained lively epoxy group enhances its reaction activity with the curing agent, so that the cured product not only has good elasticity, high elongation characteristics, but also has excellent chemical resistance, electrical insulation properties and mechanical strength.

The product has good water and chemical resistance, strong adhesion and good toughness.

The flexible epoxy resin can have a wide range of applications in electronics, electrical, coatings, adhesives and so on. Such as epoxy soft electronic potting adhesive, transformer, transformer casting material, crystal drip glue, elastic floor coatings, civil engineering construction adhesive (concrete bonding, repair, paste tiles, etc.), elastic sealant.

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