Low Shrinkage Additives
Specialized additives designed to reduce polymerization shrinkage in unsaturated polyester resins during compression molding and pultrusion processes. Our additives improve surface quality, dimensional stability, and mechanical properties.
Product Overview
Our low shrinkage additives are specially formulated to reduce polymerization shrinkage in unsaturated polyester resins during compression molding and pultrusion processes. These additives improve surface quality, dimensional stability, and mechanical properties while maintaining excellent processability and compatibility with various resin systems.
Key Applications
- • Compression molding processes
- • Pultrusion applications
- • SMC and BMC formulations
- • High-quality surface finishes
- • Dimensional stability requirements
Key Benefits
- • Reduced shrinkage
- • Improved surface quality
- • Enhanced dimensional stability
- • Better mechanical properties
- • Excellent processability
Product Highlights
Low Shrinkage Additive Product Specifications
Complete technical specifications for our low shrinkage additive series. Use the search and filter functions to find the perfect additive for your specific molding requirements.
| Model | Chemical Type | Viscosity (mPa·s) | Gel Time (min) | Molding Process | Application Field | Characteristics | Actions |
|---|---|---|---|---|---|---|---|
LC-3801 | General PS | 9000-15000 | — | Compression molding, Pultrusion | SMC/BMC | Plasticity, colorable | |
LC-3803 | General PS | 4000-6500 | — | Compression molding, Pultrusion | SMC/BMC | Plasticity, colorable | |
LC-3814 | High Impact PS | 3500-5500 | — | Compression molding, Pultrusion | SMC/BMC | High impact, colorable | |
LC-3892 | Saturated Polyester | 150-230 | — | Compression molding, Pultrusion | SMC/BMC | High gloss, low viscosity, non-colorable | |
LC-3817 | PVAc | 4200-4800 | — | Compression molding, Pultrusion | SMC/BMC | Low profile, high brightness, non-colorable | |
LC-3870 | PMMA | 2500-3200 | — | Compression molding, Pultrusion | SMC/BMC | High gloss, weather resistance, water resistance |
Product Summary
Technical Advantages
Shrinkage Reduction
Significantly reduces polymerization shrinkage, improving dimensional accuracy and reducing internal stress in molded parts.
Surface Quality Enhancement
Improves surface smoothness and gloss, reducing the need for post-processing and finishing operations.
Processing Compatibility
Excellent compatibility with various resin systems and processing conditions without compromising cure characteristics.
Application Guidelines
Polystyrene (PS) Based
General purpose and high impact polystyrene additives with good plasticity.
- • LC-3801: General PS, high viscosity
- • LC-3803: General PS, medium viscosity
- • LC-3814: High impact PS
Saturated Polyester
High gloss, low viscosity additive for premium surface finish applications.
- • LC-3892: High gloss finish
- • Low viscosity for easy processing
- • Non-colorable formulation
Usage Recommendations
Typical addition levels and processing considerations for optimal performance.
- • Addition level: 5-15% by weight
- • Mix thoroughly before use
Need Low Shrinkage Solutions?
Our technical specialists can help you select the right low shrinkage additive and optimize your molding processes for superior surface quality.