PVC Anhui Huasu SG‑5
PVC Anhui Huasu SG‑5
Material Introduction: PVC Anhui Huasu SG‑5 is a general‑purpose polyvinyl chloride resin produced by suspension‑polymerization, normally supplied as white powder. As a medium‑polymerization‑degree resin, it features balanced processability, favorable physical‑mechanical properties, excellent chemical stability and decent electrical insulation performance, with extensive application scenarios.
Main Applications
Rigid products: rigid pipes (building pipes, agricultural irrigation pipes), special‑shaped profiles (door‑window profiles), boards, sheets, injection‑molded pipe fittings.
Soft products: insulation layers and sheaths for wires and cables, artificial leather, films (raincoats, tablecloths, greenhouse films), transparent soft compounds (large amount of plasticizer is required and processing conditions shall be well controlled).
Other fields: packaging materials, daily‑consumer goods, dip‑molded products (blended with emulsion resin), flooring materials, etc.
Physical Properties
| Test Item | Test Standard | Unit | Reference Value / Range | Remarks |
|---|---|---|---|---|
| Average Degree of Polymerization | ‑ | P | 1000‑1100 (1135‑981 or 1030±50) | or viscosity number 107‑118 mL/g, K‑Value 66‑68 |
| Bulk Density | ‑ | g/ml | 0.45‑0.60 | Common: 0.54±0.03, ≥0.45, 0.58±0.02 |
| Volatile Matter Content | ‑ | % | ≤0.30‑0.35 | |
| Sieve Residue (0.25 mm sieve) | ‑ | % | ≤0.1‑2.0 | |
| Sieve Residue (0.063 mm sieve) | ‑ | % | ≥90 | |
| Fish‑eye Count | ‑ | pcs/400cm² | ≤20 | or ≤5 pcs/100cm² |
| Plasticizer Absorption | ‑ | g/100g resin | ≥17‑20 | |
| Impurity Particle Count | ‑ | pcs/100g | ≤16‑50 | |
| Whiteness (160℃, 10 min) | ‑ | % | ≥74‑78 | |
| Residual Vinyl Chloride Monomer | ‑ | μg/g (ppm) | ≤1‑8 | |
| Thermal Stability Time | ‑ | min | ≥8 |
Processing Parameters
| Process Step / Parameter | Unit / Condition | Reference Value / Range | Remarks & Description |
|---|---|---|---|
| Material Pre‑treatment | ‑ | Normally no drying required | Proper drying shall be performed if moisture‑absorbed |
| Extruder Barrel Temperature (Rigid Products) | ‑ | Note: PVC is heat‑sensitive; thermal stabilizer must be added | |
| Feed Section | ℃ | 150‑165 | For reference; adjust according to formulation and equipment |
| Compression Section | ℃ | 165‑175 | For reference; adjust according to formulation and equipment |
| Metering Section | ℃ | 175‑185 | For reference; adjust according to formulation and equipment |
| Extrusion Die Temperature | ℃ | 180‑190 | For reference; adjust according to formulation and equipment |
| Injection Molding Barrel Temperature | ‑ | Note: PVC is heat‑sensitive; thermal stabilizer must be added | |
| Rear zone | ℃ | 150‑160 | For reference; adjust according to formulation and equipment |
| Middle zone | ℃ | 160‑170 | For reference; adjust according to formulation and equipment |
| Front zone | ℃ | 170‑180 (do not exceed 190 °C) | For reference; adjust according to formulation and equipment |
| Injection Nozzle Temperature | ℃ | 160‑170 | For reference; adjust according to formulation and equipment |
| Melt Temperature | ℃ | 170‑190 | Never exceed 210 °C to avoid decomposition |
| Injection Pressure | bar | up to 1500 | |
| Screw Speed | rpm | 20‑50 | Avoid high speed to prevent shear‑caused overheating |
| Mold Temperature | ℃ | 30‑60 | |
| Thermal Stability Reminder | ‑ | Stabilizer addition is mandatory | PVC tends to decompose under over‑heating or long‑time heat exposure. Sufficient high‑efficiency thermal stabilizer shall be added into formulation. |
Disclaimer: All above data is for reference only.
