Expandable Polystyrene
(Extracellular Polymeric Substances, EPS)
| Name of the Products: | Expandable Polystyrene (Extracellular Polymeric Substances) |
|
| Appearance: | Colorless or milky small granule | |
| Density: | About 0.6 g/cm3 | |
| Main composition: | Expandable Polystyrene | about 92%-95% |
| Expanding agent | about 4%-8% | |
| Water | ≤0.5% | |
| Free monomer | about 0.1%-0.4% (Depending on different classification) |
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| Flame-retardant grade include flame-retardant agent (halogen compound, mainly bromide) | ||
| CFC (chloro-fluorocarbons) component free | ||
| Characteristics: | EXPANDING | |
| FWhen heating EPS particles through heating source (over 90℃), the extracellular polymeric substances particles are softened. Expanding agent let extracellular polymeric substances particles expand and the expandable times reach 40-80. The advantages of our products are low expanding temperature, quick velocity, high expandable times, and fewer steams. | ||
| MELTING | ||
| When heating extracellular polymeric substances (EPS) particles through heating source (over 110℃), the EPS particles become melting and adhesive. Considering low expanding and forming temperature, our products are more stable and easier for the Combining. | ||
| Package: | 25kg kraft paper PP woven compound bag or 750kg/800kg Flexible Container (according to the client’s request) | |
| Storage: | The EPS need to be put on the place cool and ventilated, keep the storage temperature below 20℃ in order to minimize the lost of expanding agent from escaping. The lower the temperature is, the better the quality is. The EPS should avoid rain, fog, snow, direct sunlight, static electricity and the fire source. Once the package material is open, the product should be used up as quickly as possible. Otherwise, the remaining EPS might lose its function due to escaping of expanding agent. If the EPS is stored too long, the expandable times might decrease. | |
| Classification | Specification | Particle-Diameter Range (mm) | Expandable Range | Characteristics & Application |
| Multiple-times Grade (P Grade) | P201 | 1.4-2.3 | 90-110 | Very high frothing times, good reserving, good binding, very smooth and tough, with multiple-times pre-frothing ability. The multiple-times grade EPS can be made into large plate material and materials for packaging electric appliances, packaging pottery and porcelain with automatic-vacuum-shaping machines. |
| P301 | 1.0-1.8 | 80-100 | ||
| P302 | 0.8-1.3 | 70-90 | ||
| P303 | 0.6-1.0 | 60-80 | ||
| P401 | 0.3-0.8 | 55-75 | ||
| P501 | 0.3-0.5 | 15-30 | ||
| Flame-retardant Grade (F Grade) | F201 | 1.4-2.3 | 90-110 | Good flame-retardant, good frothing, good preserving, good binding and low heat-conducting rate. Oxygen index over 30 (testing after 7-14 days flowing EPS being shaped), used as building-materials, materials for heat preservation, thermal insulation and for packing precision instruments. |
| F301 | 1.0-1.8 | 50-70 | ||
| F302 | 0.8-1.3 | 45-65 | ||
| F303 | 0.6-1.0 | 40-60 | ||
| F401 | 0.3-0.8 | 30-50 | ||
| F501 | 0.3-0.5 | 15-30 | ||
| Common Grade (E Grade | E201 | 1.4-2.3 | 90-110 | High expandable times, good preserving character, good binding and very smooth . This common grade EPS can be used to traditional processing machine and automatic-vacuum-processing machine to produce material for packaging electric appliances, plate, handicraft articles and box-like or case-like containers |
| E301 | 1.0-1.8 | 75-95 | ||
| E302 | 0.8-1.3 | 65-85 | ||
| E302 | 0.8-1.3 | 65-85 | ||
| E303 | 0.6-1.0 | 55-75 | ||
| E401 | 0.3-0.8 | 50-70 | ||
| E501 | 0.3-0.5 | 15-30 |
The chemical division of JOC Group is a specialist in the production and supply of extracellular polymeric substances.
Extracellular polymeric substances, which are also known as exopolysaccharide (or EPS) are compounds of high molecular weight that are released by some micro organisms into their surrounding environments. Primarily composed of polysaccharides, they can remain attached to the cell's exterior surface, or be secreted into its growth medium. EPS compounds play an important role in the formation of biofilm and cell adhesion.
EPS, composed of sugar residues, is also a critical component of cell aggregation and the protection of cells from adverse environmental conditions. In food and pharmaceutical industries, EPS has a diverse range of uses due to the wide variety of composition available.
Among the advantageous properties of EPS are as a viscosity enhancer and as a stabilizer in the dairy food industry. Extracellular polymeric substances can also find use as a plasma extender. Additionally, exopolysaccharides often facilitate the application of dextran for some bread products in the baking industry.
For a detailed specification or to enquire about extracellular polymeric substances produced by JOC Group, please contact our chemical products division via the website’s online form or alternatively by email / telephone using the following details:
| Telephone: | +86-512-58323782 |
| Cell phone: | +86-13606229555 |
