| Customization: | Available |
|---|---|
| EINECS: | No |
| Certification: | / |
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PVC Foam Regulator is a chemical additive used in the production of polyvinyl chloride (PVC) foam materials. Its primary functions include optimizing the foam structure, controlling cell size and distribution, and enhancing the material's physical properties (such as strength and surface smoothness). It acts as a critical regulatory agent during the PVC foaming process, serving as a key additive for manufacturing high-quality foamed PVC products (e.g., sheets, profiles, pipes).
Adding foam modifier into PVC products can promote fusion of PVC compounds and improve the melt strength and ductility. Improve the surface quality of products. Make the small bubble hole formed by foaming agent stable, prevent bubbles merging to produce product with uniform foamed, so that the foam formed not only with small density but also with high strength.
This additive can be applied to PVC foam products, such as thin and thick foam board, WPC floor, foam shoes and foam decoration materials etc., also can be applied to PVC profile, pipes, sheet and so on.
| Property | Description / Typical Value |
|---|---|
| Physical Properties | |
| Appearance | White or light yellow powder/granules (some liquid forms are transparent or slightly turbid). |
| Density | 1.1-1.3 g/cm³ (solid form). |
| Melting Point | No distinct melting point (softens at ~80-120°C). |
| Solubility | Insoluble in water; soluble in polar organic solvents (e.g., acetone, THF). |
| Thermal Stability | Decomposition temperature >200°C (must match blowing agent's decomposition range). |
| Melt Flow Rate (MFR) | 0.5-5 g/10 min (tested at 190°C, 2.16 kg load). |
| Hygroscopicity | Low moisture absorption (<0.5%; requires dry storage). |
| Chemical Properties | |
| Main Composition | Acrylate copolymers (ACR, e.g., PMMA-co-BA), possibly with functional groups (-COOH, epoxy). |
| Functional Groups | Ester (-COOR), methacrylate (CH2=C(CH3)COO-). |
| Decomposition Byproducts | CO2, H2O, and trace organic gases (at high temperatures). |
| pH (aqueous dispersion) | Neutral (6.5-7.5). |
| Reactivity | Physically interacts with PVC (no direct chemical reaction). |
| Molecular Structure | |
| General Formula (ACR-type) | -(CH2-C(CH3)(COOR))m-(CH2-CH(COOR))n- (R = alkyl group; m/n ratio adjusts properties). |
| Molecular Weight | 100,000-500,000 g/mol (broad distribution, varies by grade). |
| Key Performance Data | |
| Melt Strength | High (resists bubble collapse during foaming). |
| Glass Transition Temp (Tg) | 40-80°C (affects processing window). |
| Decomposition Temperature | 200-250°C (must align with blowing agent's decomposition). |
| Dosage | 1-10 wt% (based on PVC resin weight). |
| Particle Size | <50 µm (ensures uniform dispersion in PVC matrix). |
| Safety & Environment | |
| Toxicity | Low (FDA/EU-compliant for food-contact applications). |
| Flammability | Non-flammable (ignition point >300°C). |
| Certifications | RoHS, REACH (lead/phthalate-free). |
| Storage | Cool and dry (<25°C; avoid moisture). |
| Processing Parameters | |
| Processing Temperature | 160-200°C (synchronized with PVC resin). |
| Foam Cell Size | 50-500 µm (adjustable via regulator type/loading). |
| Compatibility | Compatible with PVC resin, Ca/Zn stabilizers, and lubricants (e.g., stearic acid). |
Avoid strong oxidizers to prevent decomposition.
Pre-mixing with PVC resin, blowing agents, and stabilizers is critical for uniformity.
Testing via torque rheometer (melt strength) and foam trials (cell structure) is recommended.
Key Products
PVC Foam Boards
Applications: Interior partitions, ceiling panels, exterior wall cladding
Regulator Function: Optimizes cell uniformity, enhances flexural strength and surface smoothness
Usage: 3-5% regulator blended with PVC resin and AC foaming agent (e.g., azodicarbonamide), processed via twin-screw extrusion
Wood-Grain Profiles
Applications: Window/door frames, skirting boards, outdoor decking
Regulator Function: Controls foam density (0.4-0.7 g/cm³) for authentic wood texture
Usage: Co-extrusion process with glossy PVC surface layer and microcellular foam core
Industry Advantages
50% lighter than solid wood for easier installation
Weather-resistant: waterproof and termite-proof
Key Products
Automotive Interior Panels
Applications: Door panels, dashboard padding, headliners
Regulator Function: Enhances melt strength to prevent foam collapse during hot molding
Usage: 5-8% regulator mixed with PVC paste resin for compression molding
Railway Soundproofing Materials
Applications: High-speed train/metro cabin insulation
Regulator Function: Creates closed-cell structure (>90% closed cells) for noise/vibration damping
Usage: Combined with nano-calcium carbonate for superior acoustic performance
Industry Advantages
Weight reduction improves fuel efficiency
Flame-retardant formulations meet vehicle safety standards
Key Products
Protective Packaging
Applications: Electronics, precision equipment cushioning
Regulator Function: Controls cell size (100-300 μm) for impact absorption
Usage: 2-4% regulator with supercritical CO2 physical foaming (density: 0.1-0.3 g/cm³)
Thermal Insulation Boxes
Applications: Pharmaceutical/cold chain logistics
Regulator Function: Increases closed-cell content (thermal conductivity <0.05 W/(m·K))
Usage: PVC/nano-clay composites for enhanced insulation
Industry Advantages
Recyclable alternative to EPS foam
Customizable through mold design
Key Products
Stone-Pattern Countertops
Applications: Kitchen worktops, bathroom vanities
Regulator Function: Improves adhesion between foam core and surface veneer
Usage: Marble-effect PVC film laminated onto 0.6-0.8 g/cm³ foam core
Flexible Floor Mats
Applications: Children's play mats, yoga mats
Regulator Function: Enhances elasticity (>60% rebound) and durability
Usage: Open-cell foam with 10-15% plasticizers (e.g., DOP)
Industry Advantages
Cost-effective natural material alternatives
Non-porous surfaces resist staining
Key Products
Cable Insulation
Applications: High-frequency communication cables
Regulator Function: Reduces cell defects (dielectric constant <3.5)
Usage: Chemical foaming with crosslinking agents
Industrial Filters
Applications: Gas/liquid filtration media
Regulator Function: Controls open-cell rate (>80%) and pore distribution (10-100 μm)
Usage: Gradient foaming for multi-layer pore structures
Industry Advantages
Chemical resistance to acids/alkalies
Post-processable via laser cutting/thermoforming
Innovative Products
Artificial Floating Islands
Applications: Wetland restoration, aquaculture platforms
Regulator Function: Maximizes buoyancy (density <0.2 g/cm³)
Usage: Closed-cell foam with anti-fouling coatings
3D Printing Filaments
Applications: Lightweight prototypes
Regulator Function: Improves melt flow for layer adhesion
Usage: Powder blending for SLS printing
Formulation
Base Recipe: PVC resin (100 phr) + Foam Regulator (1-10 phr) + Blowing Agent (0.5-3 phr)
Blowing Agent Selection:
Chemical: AC foamer (160-200°C decomposition)
Physical: Supercritical N2/CO2 (special equipment required)
Process Flow
Mixing: High-speed blender (<100°C)
Plasticizing: Twin-screw extruder (160-200°C)
Foaming: Pressure release at die/mold
Cooling: Water/air cooling to stabilize cells
Critical Parameters
Melt pressure: 5-15 MPa (prevents premature foaming)
Cooling rate: <10°C/min (prevents warping)
| Issue | Root Cause | Solution |
|---|---|---|
| Surface roughness | Insufficient melt strength | Increase regulator dosage (+2-3%) or switch to high-melt-strength grade |
| Cell collapse | Blowing agent mismatch | Use temperature-matched foamer (e.g., OBSH) |
| Density variation | Poor melt homogeneity | Optimize screw speed/temperature profile |
| Excessive shrinkage | Rapid cooling/open cells | Reduce cooling rate, add nucleating agents (talc) |
1.Q:How's the quality?
A:We are the source factory, quality is guaranteed.
2.Q:When does it ship?
A:We have standardized processes to ship as fast as possible.
3.Q:How do you protect the after-sales?
A:We keep samples of each batch and support returns and technical traceability in case of quality problems.
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