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Glass fiber reinforced halogen-free flame-retardant PP material and preparation method thereof

A glass fiber, intumescent flame retardant technology, applied in the field of glass fiber reinforced halogen-free flame retardant PP material and its preparation, can solve the problem of poor product surface appearance and product performance, difficulty in maintaining plastic processing temperature, and flame retardant decomposition temperature Low problems, to achieve the effect of improving mechanical properties, excellent heat resistance, and improving flame retardant properties

Inactive Publication Date: 2019-10-11
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the existing halogen-free filled flame retardant PPs have low decomposition temperature of flame retardants (decomposition begins below 250°C), which makes it difficult to maintain a high processing temperature for plastics, resulting in poor product surface appearance and product performance during processing , high scrap rate, etc.

Method used

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  • Glass fiber reinforced halogen-free flame-retardant PP material and preparation method thereof
  • Glass fiber reinforced halogen-free flame-retardant PP material and preparation method thereof
  • Glass fiber reinforced halogen-free flame-retardant PP material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 50 parts of polypropylene copolymer, 25 parts of boehmite, 10 parts of glass fiber, 5 parts of halogen-free intumescent flame retardant melamine phosphate, 10 parts of ammonium polyphosphate, 0.5 part of antioxidant 1010, 0.5 part of antioxidant 168 Add it into a high mixer and mix for 10 minutes to mix evenly. Extrude the mixed blend through a twin-screw extruder to obtain a composition. The temperature of each zone of the extruder is 180°C from the feeding section to the head 180°C, 180°C, 185°C, 185°C, 190°C, 190°C, 195°C, 200°C, 190°C, the aspect ratio of the extrusion screw is 42, and the rotation speed of the extrusion screw is 300 rpm.

Embodiment 2

[0025] Add 60 parts of polypropylene copolymer, 20 parts of boehmite, 10 parts of glass fiber, 10 parts of halogen-free intumescent flame retardant melamine phosphate and 0.8 part of antioxidant DSTDP into a high-mixer and mix for 10 minutes to mix evenly. The blend is extruded and granulated by a twin-screw extruder to obtain a composition. The temperature of each zone of the extruder from the feeding section to the head temperature is 175°C, 175°C, 180°C, 180°C, 185°C, and 185°C. , 185°C, 195°C, 205°C, 190°C, the length-to-diameter ratio of the extrusion screw is 42, and the rotation speed of the extrusion screw is 300 rpm.

Embodiment 3

[0027] Add 65 parts of polypropylene copolymer, 15 parts of boehmite, 10 parts of glass fiber, 12 parts of halogen-free intumescent flame retardant phosphazene and 0.5 part of antioxidant 1010 into a high-mixer and mix for 10 minutes to mix evenly. The mixture is extruded and granulated by a twin-screw extruder to obtain a composition. The temperature of each zone of the extruder from the feeding section to the head temperature is 175°C, 175°C, 175°C, 180°C, 180°C, 185°C, 185°C, 190°C, 200°C, 195°C, the length-to-diameter ratio of the extrusion screw is 42, and the rotation speed of the extrusion screw is 300 rpm.

[0028] The composite materials prepared in the above-mentioned Examples 1-3 were tested for performance, and the test results are shown in Table 1.

[0029] Table 1:

[0030]

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PUM

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Abstract

The invention discloses a glass fiber reinforced halogen-free flame-retardant PP material and a preparation method thereof. The glass fiber reinforced halogen-free flame-retardant PP material is prepared by, by weight, 50-65 parts of co-polypropylene, 15-25 parts of boehmite, 10 parts of glass fibers, 10-15 parts of halogen-free intumescent flame retardant and 0.5-1 part of antioxidant. The glassfiber reinforced halogen-free flame-retardant PP material is prepared by compounding the boehmite and the intumescent flame retardant, and the flame retardance, thermal stability and mechanical performance of the polypropylene material are increased.

Description

technical field [0001] The invention relates to the technical field of modified plastics, in particular to a glass fiber reinforced halogen-free flame-retardant PP material and a preparation method thereof. Background technique [0002] The flame retardant performance of plastics directly determines the application range of its products, so the flame retardant modification of plastics is a very important research direction in the modified plastics industry. At present, the flame-retardant effect is the most remarkable is the halogen-containing flame retardant, but the halogen-containing flame-retardant material will produce a large amount of smoke and toxic corrosive hydrogen halide gas during the flame-retardant process. The requirements for the environmental protection performance of materials are getting higher and higher, and the development of halogen-free flame-retardant materials has very important practical significance. [0003] The existing halogen-free filled fla...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08K13/04C08K7/14C08K3/34C08K5/3492C08K3/32C08K5/5399
CPCC08K13/04C08K7/14C08K3/34C08K5/34928C08K3/32C08K5/5399C08K2201/003C08K2201/011C08K2003/323
Inventor 杨桂生赵鑫姚晨光
Owner HEFEI GENIUS NEW MATERIALS