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Preparation method for dialysis-resistant composite halogen-free flame-proof agent

A composite flame retardant and composite halogen-free technology, which is applied in the field of preparation of anti-dialysis composite halogen-free flame retardants, can solve the problems affecting the mechanical properties of materials, flame retardant processing performance and product surface properties, poor thermal stability, and application limitations and other problems, to achieve the effect of easy industrial production, good compatibility and high production efficiency

Inactive Publication Date: 2008-07-09
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of flame retardant also has the disadvantages of high hygroscopicity, poor compatibility with the matrix polymer, and poor thermal stability. Material mechanical properties, flame retardant function, processing performance and product surface properties limit its application

Method used

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  • Preparation method for dialysis-resistant composite halogen-free flame-proof agent
  • Preparation method for dialysis-resistant composite halogen-free flame-proof agent
  • Preparation method for dialysis-resistant composite halogen-free flame-proof agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1) The compound system formulated with the mass ratio of ammonium polyphosphate: pentaerythritol: melamine = 65:20:15 was dried in a vacuum oven at 80°C for 4 hours, and then 1 part of γ-aminopropyltriethoxysilane was added , stirred and mixed evenly at 100°C to obtain an active composite flame retardant;

[0017] Add a suspension system consisting of 1 part of glyoxal, 0.01 part of dicumyl peroxide, 0.08 part of antioxidant and 10 parts of ethanol to 100 parts of active composite flame retardant, stir and react at 150°C for 60 minutes, and cool and drying to obtain a dialysis-resistant composite halogen-free flame retardant with a particle size of 20-100 μm.

[0018] 2) Stir the above anti-dialysis composite halogen-free flame retardant and polypropylene at a mass ratio of flame retardant: polypropylene = 30:100 at high speed for 5 minutes, and then melt and extrude it through a twin-screw extruder at a barrel temperature of 150-180°C and injection molded to obtain te...

Embodiment 2

[0021] 1) The compound system formulated with the mass ratio of ammonium polyphosphate: pentaerythritol: melamine=40:35:25 was dried in a vacuum oven at 80°C for 4 hours, and then 0.5 parts of γ-glycidyloxypropyltrimethoxy base silane, stirred and mixed evenly at 150°C to obtain an active composite flame retardant;

[0022] Add a suspension system consisting of 3 parts of glutaraldehyde, 0.08 parts of dicumyl peroxide, 0.5 parts of antioxidant and 50 parts of ethanol to 100 parts of active composite flame retardant, stir and react at 150°C for 30 minutes, and cool and drying to obtain a dialysis-resistant composite halogen-free flame retardant with a particle size of 20-100 μm.

[0023] 2) Stir the above-mentioned anti-dialysis composite halogen-free flame retardant and polypropylene at a mass ratio of flame retardant: polypropylene = 30:100 at high speed for 5 minutes, and then melt through a twin-screw extruder at a barrel temperature of 150-180°C Extruded and injection mol...

Embodiment 3

[0026] 1) The mass ratio of ammonium polyphosphate: pentaerythritol: melamine = 80:15:5 formulated compound system, dried in a vacuum oven at 80°C for 4hr, then added 2 parts of isopropyl tri(isostearate Acyl) phthalate, stirred and mixed uniformly at 80°C to obtain an active composite flame retardant;

[0027] Add the suspension system consisting of 10 parts of glutaraldehyde, 0.1 part of benzoyl peroxide, 0.02 parts of antioxidant and 100 parts of ethanol to 100 parts of active composite flame retardant, stir and react at 220 °C for 30 minutes, after cooling, drying to obtain a dialysis-resistant composite halogen-free flame retardant with a particle size of 20-100 μm.

[0028] 2) Stir the above-mentioned anti-dialysis compound halogen-free flame retardant and polypropylene at a mass ratio of flame retardant: polypropylene: talcum powder = 30: 100: 30 at high speed for 5 minutes, and then pass through a twin-screw extruder at a barrel temperature of 150 Melt extrusion at ~2...

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Abstract

The invention discloses a making method of dialysis-proof composite non-halogen fire retardant, which comprises the following steps: decorating bulking-typed non-halogen fire retardant through coupling agent; blending with monomer with aldehyde group, initiator, anti-oxidant and dispersing dielectric suspension evenly; reacting at 150-220 deg.c completely; acting monomer with aldehyde group and composite non-halogen fire retardant completely; drying to obtain the smooth fire retardant polypropylene material without releasing toxic smoke.

Description

technical field [0001] The invention relates to a preparation method of a dialysis-resistant composite halogen-free flame retardant, in particular to a preparation method of a dialysis-resistant composite halogen-free flame retardant specially used for producing halogen-free flame-retardant polypropylene composite materials. Background technique [0002] Polypropylene has excellent comprehensive properties and is widely used in the fields of civil and engineering plastics. However, polypropylene is easy to burn and has a high calorific value, and the molten droplets produced can easily spread flames. Therefore, polypropylene flame-retardant technology, especially halogen-free flame-retardant technology, has become an inevitable development of flame-retardant polypropylene composite materials because it meets environmental protection requirements. trend [0003] The method of adding organic and inorganic halogen-free flame retardants to polypropylene to realize polypropylene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K11/00C08K3/32C08K5/05C08K5/3492C08L23/12
Inventor 杨红梅胡巧玲曹苏华
Owner ZHEJIANG UNIV
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