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1、 Product Introduction

FR701 is mainly suitable as a phosphinate flame retardant for reinforced polyamide 6.

FR701 is a non halogenated flame retardant based on organic phosphinic acid salts. This product achieves flame retardant effect through foaming. The thermoplastic polymer containing FR701 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. FR701 is a white powder with high flame retardant efficiency in polyamide. 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 0.4 millimeters;

3. Good coloring properties;

4. Suitable for both glass fiber reinforced and non reinforced grades;

5. Flame retardant polyamide compounds exhibit excellent physical properties and outstanding electrical characteristics;

6. The most efficient grade in terms of UL 94 and glow wire ignition temperature (GWIT) testing performance;

Compared to halogen systems, smoke has lower toxicity;

8. The contrast of laser marking is good;

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

10. Zero halogen 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、 Usage suggestions and precautions

FR701 is applied to polyamide. It is applicable to both reinforced and non reinforced glass fiber grades. This flame-retardant polyamide compound exhibits excellent physical and electrical properties. FR701 can also be used for various injection molded parts and synthetic leather.

2. The formulation of FR701 in glass fiber reinforced polyamide 6 or 66, with a dosage of 15-20% (by weight), is typically sufficient to meet UL 94 V-0 rating for electrical components (1.6 and 0.8 mm thickness). The amount of flame retardant used may vary depending on the polymer grade, processing conditions, and glass fiber reinforcement.

Before adding FR701, it is necessary to pre dry the polyamide as usual. If possible, the moisture content after pre drying should be less than 0.1% by weight. It is not necessary to pre dry FR701. However, if it is necessary to avoid very low moisture content, it is recommended to perform pre drying (such as 4 hours at 120 degrees Celsius). The optimal conditions for joining should be determined based on specific circumstances. Attention must be paid to ensuring that all ingredients are evenly dispersed. The temperature of the polymer melt should not exceed 300 ℃.

6、 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. Formula：

2. Processing technology:

Model: Twin screw extruder 36

Host temperature setting (℃): 250 260 265 270 265 260 255 250

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) testing; Formula three can pass UL94V-0 (1.6mm) flame retardant testing.