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1、 Product Introduction

FR703 is suitable for PBT specific halogen-free flame retardants.

FR703 is a phosphorus nitrogen based compound halogen-free flame retardant. This product achieves flame retardant effect through foaming. The thermoplastic polymer PBT containing FR703 foams and crosslinks upon exposure to fire, forming a stable coking carbon layer and isolation layer on the surface. The protective layer has a thermal insulation effect, which can reduce the entry of oxygen and prevent the dripping of molten polymer. FR703 is a white powder with high flame retardant efficiency in PBT. It does not corrode the mold during extrusion and is reasonably priced.

2、 Product indicators

3、 Recommended dosage

4、 Product advantages

1. Achieve flame retardant effect by combining the action of gas phase and solidification phase;

2. UL 94 V-0 grade, with a thickness as low as 0.8 millimeters;

3. Good coloring properties;

4. Flame retardant PBT exhibits excellent physical properties and outstanding electrical characteristics;

5. The most efficient grade in UL 94 and Glow Wire Ignition Temperature (GWIT) testing performance;

Compared to halogen systems, smoke has lower toxicity;

7. The contrast of laser marking is good;

8. Low material density helps to reduce weight of the product;

9. Halogen free flame retardant, with good environmental and health characteristics, fully complies with the requirements of the EU RoHS environmental directive and relevant domestic policies and regulations for halogen-free, low smoke, and green flame retardant materials.

5、 Storage and transportation

1. This product is packaged in paper bags with polyethylene liners, with a net weight of 25kg per package, and transported as a regular chemical.

2. The product should be stored at room temperature in a dry place. If stored according to the above conditions, the minimum shelf life is 12 months from the date of shipment. If stored for a long time or accidentally exposed to moisture, it is recommended to dry at 80-110 ℃ for 2-4 hours before use.

7、 Attachment: Application Examples

1. Recipe:

2. Processing technology:

Model: Twin screw extruder 36

Host temperature setting (℃): 225 225 230 235 235 230 225 225 225

Host speed: 200-300rpm

3. Test results

Formula 1 can pass UL94V-0 (1.6mm) flame retardant testing; Formula 2 can pass UL94V-0 (0.8mm) flame retardant testing.