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Polyvinyl chloride (PVC) paste Resin , as the name implies, is that this resin is mainly used in paste form. People often use this type of paste as plastisol, which is a unique liquid form of PVC plastic in its unprocessed state. . Paste resins are often prepared by emulsion and micro-suspension methods.
| Viscosity Grade | Characteristics | Typical Values (Brookfield, 25°C) | Applications |
| Low Viscosity | Excellent fluidity, suitable for thin coatings | 3,000-10,000 mPa·s | Artificial leather surface, wallpaper |
| Medium Viscosity | Balanced flow and moldability | 10,000-30,000 mPa·s | Gloves, tool handles, automotive seals |
| High Viscosity | Thick paste, ideal for foaming or complex molds | 30,000-100,000 mPa·s | Foamed flooring, shoe soles |
| K-value Range | Characteristics | Applications |
| Low (K=60-65) | Lower molecular weight, high fluidity | Soft toys, low-strength coatings |
| Medium (K=65-70) | Balanced strength and processability | Artificial leather, automotive interiors |
| High (K=70-80) | High mechanical strength, wear resistance | Industrial flooring, foamed products |
| Process | Characteristics | Applications |
| Microsuspension | Uniform particle size, high transparency | Transparent coatings, glossy surfaces |
| Emulsion | Smaller particles, high flexibility | Elastic seals, complex-shaped products |
| Application Grade | Characteristics | Examples |
| General Purpose | Cost-effective for standard products | Toys, packaging materials |
| Foaming Specialty | High compatibility with foaming agents | Foamed wallpaper, automotive soundproofing |
| Medical Grade | High purity, low migration, FDA-compliant | Medical gloves, disposable tubes |
| Weather-resistant | UV stabilizers added for outdoor use | Inflatable products, automotive coatings |
PVC Resin vs. PVC Paste Resin
| Comparison Criteria | PVC Resin | PVC Paste Resin |
| Chemical Properties | ||
| Molecular Weight (K-value) | 55-75 (high molecular weight, uniform chains) | 60-80 (medium-low molecular weight, branched chains) |
| Plasticizer Absorption Capacity | <10% (dense surface, low absorption) | 60-100% (porous structure, high absorption) |
| Thermal Stability | Requires high-temperature processing (160-200°C), relies on stabilizers | Low-temperature curing (120-180°C), requires localized heat control |
| Solvent Resistance | High (rigid structure, no plasticizer migration) | Moderate (plasticizer migration may cause swelling) |
| Environmental Compliance | Low risk (typically no plasticizers) | Requires attention to plasticizer types (e.g., restricted phthalates) |
| Production Process | ||
| Polymerization Method | Suspension or bulk polymerization | Microsuspension or emulsion polymerization |
| Particle Characteristics | Large particles (100-150 μm), smooth surface | Ultrafine powder (0.1-2 μm), porous structure |
| Physical Form | ||
| Appearance | White powder or granules | Ultrafine powder, forms a paste when mixed with plasticizers |
| Flowability | Relies on high-temperature melt flow | Paste-like flow at room temperature (plasticizer-dependent) |
| Processing Methods | ||
| Temperature Requirements | High-temperature melting (160-200°C) | Room-temperature mixing, heated curing (120-180°C) |
| Typical Processes | Extrusion, injection molding, calendering | Coating, dipping, casting, foaming |
| Additives Required | Stabilizers, lubricants, fillers | Plasticizers, stabilizers (compatible with plasticizers) |
| Application Fields | ||
| Primary Products | Rigid or semi-rigid products | Soft, flexible, or complex-shaped products |
| Typical Applications | Pipes, window profiles, sheets, cable jackets | Artificial leather, gloves, toys, automotive seals, foamed products |
| Core Advantages | High strength, corrosion resistance, low cost | High flexibility, complex molding capability, low-temperature processing |
| Application Area | Specific Uses | Advantages |
| Toys | Inflatable pools, balls, dolls, soft models | 1.High flexibility, tear-resistant 2.Low-temperature processing for complex shapes 3.Complies with child safety standards |
| Household Items | Anti-slip mats, shower curtains, tablecloths | 1.Water and chemical-resistant 2.Easy-to-clean surface with diverse patterns |
| Packaging | Transparent flexible packaging, cosmetic bottle seals | 1.High transparency, printable 2.Excellent sealing performance |
| Application Area | Specific Uses | Advantages |
| Interior Parts | Dashboard coatings, door panel surfaces, steering wheel covers | 1.Soft touch, wear-resistant 2.Weather-resistant 3.Conforms to complex curves |
| Sealing Strips | Window seals, door waterproof strips | 1.High elasticity, long-term compression resistance 2.Aging-resistant (-30°C to 120°C) |
| Soundproofing | Foamed soundproof pads, engine compartment insulation | 1.Lightweight, excellent sound absorption 2.Flame-retardant |
| Application Area | Specific Uses | Advantages |
| Wallpaper/Flooring | Foamed wallpaper, PVC flooring surfaces, carpet backing | 1.Fine patterns, 3D effects 2.Wear and stain-resistant 3.Foam structure for thermal and sound insulation |
| Waterproofing | Roof coatings, basement damp-proof membranes | 1.Seamless adhesion, water pressure-resistant 2.Root puncture-resistant |
| Decorative Films | Furniture films, wood-grain coatings on metal | 1.High-fidelity textures 2.Scratch-resistant, easy to clean |
| Application Area | Specific Uses | Advantages |
| Medical Products | Disposable gloves, blood bags, catheters | 1.Biocompatible 2.High transparency, easy to sterilize 3.No plasticizer migration risk |
| Protective Gear | Industrial gloves, protective clothing coatings, chemical mask seals | 1.Acid/alkali and puncture-resistant 2.Flexible and comfortable for prolonged wear |
| Application Area | Specific Uses | Advantages |
| Wires & Cables | Insulation sheaths, high-temperature cable coatings | 1.Flame-retardant 2.Stable voltage and insulation performance |
| Electronic Packaging | Anti-static trays, protective coatings for electronic components | 1.Conductive/anti-static 2.Chemical corrosion-resistant |
| Industrial Coatings | Anti-corrosion coatings for metal pipes, conveyor belt surfaces | 1.Strong adhesion, wear and corrosion-resistant 2.Thick-coating, one-step molding |
| Application Area | Specific Uses | Advantages |
| Artificial Leather | Shoes, bags, sofa fabrics | 1.Leather-like texture, breathable 2.Recyclable |
| Functional Clothing | Raincoat waterproof layers, flame-retardant coatings for firefighting suits | 1.Water pressure-resistant 2.Flame-retardant, high-temperature resistant |
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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