Product Description
| Application | tubing |
Product name: Item: Test properties: | Polyvinyl chloride resin Sample Entrusted inspection | Model specification: Inspection basis: | PVC-SG8 GB/T 5761-2018 "County Float General-purpose Polyvinyl Chloride Resin" | Productquantity -tons Productiondate:2024-06-07 Inspectiondate:2024-06-07 |
| Item | Index | Measured value | ||
| Superiorproducts | First grade | Qualified products | ||
Viscosity/(mL/g) (or K value) (or average degree of polymerization) | 86~73 (59~55) [740～650] | 82 | ||
| Number of impurity granular/pcs ≤ | 20 | 40 | 60 | 0/10 |
| Volatile matter (including water) mass fraction/% ≤ | 0.40 | 0.40 | 0.50 | 0.05 |
| Apparent density/(g/mL) | 0.52 | 0.45 | 0.42 | 0.55 |
Screen residue mass fraction/% 250μm Sieve hole ≤ | 1.6 | 2.0 | 8.0 | 0.2 |
Screen residue mass fraction/% 63μm Sieve hole | 97 | 90 | 85 | - |
| Number of "fish eyes"/(pieces/400cm^2) ≤ | 30 | 30 | 60 | 15 |
| 100g resin plasticizer absorption/g ≥ | 12 | - | - | 18 |
| Whiteness (160℃,10min)/% ≥ | 75 | 70 | 70 | 80 |
| Residual vinyl chloride monomer content/(μg/g) ≤ | 5 | 5 | 10 | 0.8 |
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