Polyolefin molding compound
The polyolefin molding of polyethylene and polypropylene are in accordance with ISO 1872 (PE) and ISO 1873 (PP).
Plastics must be provided with additives and aggregates before processing . In order to be able to understand these changes, polyolefin molding compounds are marked according to ISO 1872 and ISO 1873 (old DIN 16773).
These standards clearly identify the polyolefin molding compound using a series of letters and numbers that are arranged in up to five blocks. The following example serves as an illustration:
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ISO 1873 - PP-H MFRN 06-D003 GF30
- Block 1: Abbreviation of the polymer and additives, here polypropylene homopolymer
- Block 2: Processing method, here injection molding compound, fire protection m., Mold release m., Not colored
- Block 3: ...
The characters possible for each data block and their respective meanings are listed below.
Data block 1
Data block 1 contains the abbreviation of the plastic used. The following are code letters for special properties.
Identification letters for data block 1
| B. | Block polymer | C. | chlorinated | D. | density |
| E. | Foamed; Emulsion polymer | F. | Flexible; liquid | G | Cast resin |
| H | high (high); Homopolymer | I. | impact resistant | J | Prepolymer |
| L. | low; Graft polymer | M. | medium. molecular; Bulk polymer | N | normal; nucleated |
| P | contains plasticizer | R. | elevated; Resol | S. | Suspension polymer |
| T | thermoplastic | U | ultra; plasticizer-free; unsaturated | V | very (very) |
| W. | Weight | X | networked; networkable |
Data block 2
position 1
Intended processing methods
| B. | Blow molding | C. | Calendering | D. | Vinyl and video records |
| E. | Extrusion : | Pipes , profiles, plates | F. | Extrusion: foil | G | general applications |
| H | Coatings | K | Cable wire sheathing | L. | Monofilament extrusion |
| M. | Injection molding | P | Paste production | Q | Press |
| R. | Rotational molding | S. | Powder sintering | T | Ribbon manufacturing |
| V | Thermoforming | X | not specified | Y | Fiber manufacture |
Position 2-8
Qualitative characteristics (additives and coloring).
| A. | Processing stabilizer | B. | Antiblocking agent | C. | Colorants | D. | Powder (dry blend) |
| E. | Propellant | F. | Fire retardants | G | granules | H | Anti-aging agents |
| K | Metal deactivator | L. | Light and weather stabilizer | N | Without added color (natural color) | P | impact modified |
| R. | Mold release agents | S. | Lubricants, auxiliary agents | T | increased transparency | X | networkable |
| Y | improves electrical conductivity | Z | Antistatic |
Data block 3
Density of polyethylene [kg m −3 ]
| 00 | ≤ 901 |
| 03 | 901 ... 906 |
| 08 | 906 ... 911 |
| 13 | 911 ... 916 |
| 18th | 916 ... 921 |
| 23 | 921 ... 925 |
| 27 | 925 ... 930 |
| 33 | 930 ... 936 |
| 40 | 936 ... 942 |
| 45 | 942 ... 948 |
| 50 | 948 ... 954 |
| 57 | 954 ... 960 |
| 62 | > 960 |
Modulus of elasticity of polypropylene [M Pa ]
| 02 | <400 |
| 06 | 400 ... 800 |
| 10 | 800… 1200 |
| 16 | 1200 ... 2000 |
| 28 | 2000 ... 3500 |
| 40 | ≥ 3500 |
Notched impact strength of polypropylene [k J m −2 ]
| 02 | <3 |
| 05 | 3… 6 |
| 09 | 6… 12 |
| 15th | 12… 20 |
| 25th | 20 ... 30 |
| 35 | ≥ 30 |
Melt mass flow rate [g min −1 ]
| with polyethylene | ||
| character | Temperature [ ° C ] | Load [ kg ] |
|---|---|---|
| E. | 190 | 0.325 |
| D. | 190 | 2.16 |
| T | 190 | 5.00 |
| G | 190 | 21.6 |
| for polypropylene and polyethylene | ||
| 000 | ≤ 0.1 | |
| 001 | 0.1-0.2 | |
| 003 | 0.2-0.4 | |
| 006 | 0.4-0.8 | |
| 012 | 0.8-1.5 | |
| 022 | 1.5-3.0 | |
| 045 | 3.0-6.0 | |
| 090 | 6-12 | |
| 200 | 12-25 | |
| 400 | 25-50 | |
| 700 | 50 | |
Data block 4
position 1
Material of the added additive.
| B. | boron | C. | carbon | G | Glass | K | Calcium carbonate | L. | Cellulose |
| M. | Mineral; metal | Q | silicant fillers | S. | synthetic fabrics, org. Fabrics | T | talc | W. | Wood |
Position 2
Shape or structure of the added additive.
| B. | Balls ; Pearls; Balls | D. | powder | F. | Fibers | G | Regrind | H | Whiskers |
| S. | Peel; Flakes | X | Not fixed | Z | other |
Paragraph 3–4
Mass fraction in% of the added additive.
| 05 | to 7.5 | 10 | > 7.5 to 12.5 | 15th | > 12.5 to 17.5 | 20th | > 17.5 to 22.5 | 25th | > 22.5 to 27.5 |
| 30th | > 27.5 to 32.5 | 35 | > 32.5 to 37.5 | 40 | > 37.5 to 42.5 | 45 | > 42.5 to 47.5 | 50 | > 47.5 to 52.5 |
| 55 | > 52.5 to 57.5 | 60 | > 57.5 to 62.5 | 65 | > 62.5 to 67.5 | 70 | > 67.5 to 72.5 | 75 | > 72.5 to 77.5 |
| 80 | > 77.5 to 82.5 | 85 | > 82.5 to 87.5 | 90 | > 87.5 to 92.5 |
Data block 5
The data block 5 is voluntary. If this is omitted, it is indicated by two commas.
Norms
- EN ISO 17855-1 Plastics - Polyethylene (PE) molding compounds - Part 1: Designation system and basis for specifications .
- EN ISO 19069-1 Plastics - Polypropylene (PP) molding compounds - Part 1: Designation system and basis for specifications .