PVC Tianjin Dagu DG‑800
PVC Tianjin Dagu DG‑800 Resin
Material Introduction: PVC Tianjin Dagu DG‑800 is a well‑balanced and widely‑applied polyvinyl chloride resin. It is especially suitable for manufacturing transparent sheets, bottle‑grade materials and high‑performance flat heat‑shrinkable tubes. Its prominent features include moderate degree of polymerization, good whiteness and low fish‑eye count.
Main Applications
Boards, sheets and bottle‑grade materials. Besides, it is applicable to other rigid or semi‑rigid PVC products.
Performance Parameters
| Test Item | Test Method / Condition | Unit | Value / Range (Reference) | Remarks |
|---|---|---|---|---|
| Average Degree of Polymerization | ‑ | ‑ | 700±50 (Reference) | Degree of polymerization is the key basis for PVC grade classification |
| K‑Value | ‑ | ‑ | 59‑61 (Reference) | Lower K‑value generally brings better processability |
| Bulk Density | ‑ | g/ml | 0.50‑0.60 (Reference) | Affects conveying and processing efficiency |
| Volatile Matter Content | ‑ | % | ≤0.3‑0.5 (Reference) | Index for superior grade is usually lower |
| Fish‑eye Count | ‑ | pcs/100cm² | ≤5‑10 (Reference) | Affects appearance uniformity of finished products |
| Original Whiteness | ‑ | % | ≥85‑90 (Reference) | |
| Impurity Particle Count | ‑ | pcs/100g | ≤20‑50 (Reference) |
Processing Technology
| Process / Parameter | Unit / Condition | Value / Range (Reference) | Remarks & Description |
|---|---|---|---|
| Drying Treatment | ‑ | Normally not required | Dry at 80‑90℃ for 1‑2 hours if moisture‑absorbed |
| Extruder Barrel Temperature | ‑ | Note: PVC is heat‑sensitive material, thermal stabilizer must be added | |
| ‑ Feeding Section | ℃ | 140‑160 | For reference only; actual value adjusted according to formula and equipment |
| ‑ Compression Section | ℃ | 160‑170 | For reference only; actual value adjusted according to formula and equipment |
| ‑ Metering Section | ℃ | 170‑180 | For reference only; actual value adjusted according to formula and equipment |
| Extruder Die‑head / Die Temperature | ℃ | 180‑190 | For reference only; actual value adjusted according to formula and equipment |
| Injection Molding Barrel Temperature | ‑ | Note: PVC is heat‑sensitive material, thermal stabilizer must be added | |
| ‑ Rear Section | ℃ | 140‑150 | For reference only; actual value adjusted according to formula and equipment |
| ‑ Middle Section | ℃ | 150‑165 | For reference only; actual value adjusted according to formula and equipment |
| ‑ Front Section | ℃ | 165‑175 | For reference only; actual value adjusted according to formula and equipment |
| Injection Nozzle Temperature | ℃ | 160‑170 | For reference only; actual value adjusted according to formula and equipment |
| Melt Temperature | ℃ | 170‑190 | Do not exceed 210℃ to avoid decomposition |
| Mold Temperature | ℃ | 30‑60 | |
| Thermal Stability Notice | ‑ | Stabilizer addition is mandatory | PVC tends to decompose under overheating or long‑term heat exposure. Proper thermal stabilizers, lubricants and other additives shall be incorporated in formula. |
Disclaimer: All above data is for reference only.
