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Halogen-free flame-retardant ABS (Acrylonitrile Butadiene Styrene) resin and preparation method thereof

A technology of ABS resin and ammonium polyphosphate, applied in the field of flame retardant, can solve the problems of strong hygroscopicity, inconvenient processing, poor compatibility, etc.

Active Publication Date: 2012-10-17
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, phosphate ester flame retardants are mostly liquid, have certain volatility and are inconvenient to process.
[0005] Intumescent flame retardant is the key field of halogen-free flame retardant research. The classic ammonium polyphosphate / pentaerythritol / melamine system has the characteristics of halogen-free, low smoke, and non-toxic, but its flame retardant efficiency for ABS resin is not high, and the addition amount is relatively large , poor compatibility with ABS resin, and strong hygroscopicity

Method used

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  • Halogen-free flame-retardant ABS (Acrylonitrile Butadiene Styrene) resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1) Dry 700g of ABS resin, 225g of ammonium polyphosphate and montmorillonite nanocomposite, and 75g of dipentaerythritol in a forced air drying oven at 80°C for 3 hours;

[0024] 2) Mix the ABS resin obtained in step 1), ammonium polyphosphate and montmorillonite nanocomposite, dipentaerythritol, 3g of polytetrafluoroethylene, 4g of 168 antioxidant and 2g of 1010 antioxidant;

[0025] 3) The mixture obtained in step 2) is melt-blended with a twin-screw extruder, extruded and granulated. The temperature settings of the extruder from the feed port to the head are 186°C, 191°C, 196°C, 196°C, 191°C, 185°C.

[0026] 4) Dry the granulated particles in step 3) in an oven at 80°C for 2 hours, then inject them on the injection molding machine, and inject splines of the following sizes: 120mm×6mm×3mm, 127mm×12.7mm×3.2mm, 127mm ×12.7mm×1.6mm, and 100mm×100mm×3mm; the temperature of each section of the injection molding machine is set to 205°C, 205°C, 205°C, 200°C, 195°C, and the ...

Embodiment 2

[0029] Same as Example 1, except that the mass of ABS resin in step 1) is 600g, the mass of ammonium polyphosphate and montmorillonite nanocomposite is 300g, and the mass of dipentaerythritol is 100g. The test results are shown in Table 1.

Embodiment 3

[0031] 1) Bake 700g of ABS resin, 225g of ammonium polyphosphate and montmorillonite nanocomposite, 75g of dipentaerythritol and 30g of coated red phosphorus in a blast drying oven at 80°C for 3h;

[0032] 2) Combine the ABS resin obtained in step 1), ammonium polyphosphate and montmorillonite nanocomposite, dipentaerythritol, coated red phosphorus with 3g of polytetrafluoroethylene, 4g of 168 antioxidant and 2g of 1010 antioxidant well mixed;

[0033] 3) The mixture obtained in step 2) is melt-blended with a twin-screw extruder, extruded and granulated. The temperature settings of the extruder from the feed port to the head are 186°C, 191°C, 196°C, 196°C, 191°C, 185°C.

[0034] 4) Dry the granulated particles in step 3) in an oven at 80°C for 2 hours, then inject them on the injection molding machine, and inject splines of the following sizes: 120mm×6mm×3mm, 127mm×12.7mm×3.2mm, 127mm ×12.7mm×1.6mm, and 100mm×100mm×3mm; the temperature of each section of the injection moldin...

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Abstract

The invention relates to halogen-free flame-retardant ABS (Acrylonitrile Butadiene Styrene) resin and a preparation method thereof, which particularly relate to application of ammonium polyphosphate and montmorillonite nanocomposite, dipentaerythritol and encapsulated red phosphorous in flame-retardant ABS terpolymer, and belong to the field of flame-retardant technology. The halogen-free flame-retardant ABS resin comprises ABS resin, ammonium polyphosphate and montmorillonite nanocomposite, dipentaerythritol, Teflon and antioxygen. According to the halogen-free flame-retardant ABS resin and the preparation method, the ammonium polyphosphate and montmorillonite nanocomposite, the dipentaerythritol and the encapsulated red phosphorous are added into the flame-retardant ABS, and tests prove that the ammonium polyphosphate and montmorillonite nanocomposite, the dipentaerythritol and the encapsulated red phosphorous can improve the value of limit oxygen index of ABS and the grade of vertical burning of UL94 (Test for Flammability of Plastic Materials for Parts in Devices and Appliances) and can reduce the heat releasing rate and the peak of the heat releasing rate.

Description

technical field [0001] The invention relates to a halogen-free flame-retardant ABS resin and a preparation method thereof, in particular to ammonium polyphosphate, montmorillonite nanocomposite, dipentaerythritol and coated red phosphorus in flame-retardant acrylonitrile-butadiene-styrene ternary The application in the copolymer belongs to the technical field of flame retardancy. Background technique [0002] Acrylonitrile-butadiene-styrene terpolymer (Acrylonitrile Butadiene Styrene, referred to as ABS), is a thermoplastic engineering plastic developed in the 1940s, grafted from polystyrene-acrylonitrile (SAN) resin to Polybutadiene (PB) is formed on the molecular chain, which combines the advantages of the three components. It has good mechanical properties, chemical corrosion resistance, and is easy to process and shape. Therefore, it is widely used in electronic appliances, automobile manufacturing, cultural, educational and entertainment products. And building material...

Claims

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Application Information

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IPC IPC(8): C08L55/02C08K13/06C08K3/32C08K3/34C08K5/06C08K3/02
Inventor 李向梅张志远杨荣杰
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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