Degradable halogen-free flame-retardant foaming material and preparation method thereof

A foaming material and foaming agent technology, applied in the field of degradable halogen-free flame retardant foaming materials and their preparation, can solve problems such as endangering life safety, and achieve the effect of expanding the processing window and making the processing window larger

Pending Publication Date: 2019-12-06
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing flame retardants added to foaming materials are usually bromine-antimony system flame retardant products, which will release a large amount of toxic gases during the combustion process, endangering human life, so the use of more environmentally friendly flame retardant systems is more pressing needs

Method used

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  • Degradable halogen-free flame-retardant foaming material and preparation method thereof
  • Degradable halogen-free flame-retardant foaming material and preparation method thereof
  • Degradable halogen-free flame-retardant foaming material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 70 parts of PVA, 10 parts of poly-β-hydroxybutyric acid, 5 parts of glycerol, 20 parts of aluminum hydroxide, 5 parts of boehmite, 5 parts of foaming agent, 3 parts of crosslinking agent, 0.5 parts of heat stabilizer Add it into a high-speed mixer, mix it at a low speed for 3 minutes, and then put the uniformly mixed material into a twin-screw plate extruder, knead, extrude, and cool to obtain the final product. Wherein the extrusion temperature of each extrusion zone in the twin-screw extruder is 170°C, 180°C, 190°C, 190°C, 200°C respectively. The product performance is shown in Table 1

Embodiment 2

[0023] 60 parts of PVA, 8 parts of poly-β-hydroxybutyric acid, 4 parts of glycerin, 25 parts of aluminum hydroxide, 4 parts of boehmite, 4 parts of foaming agent, 2 parts of crosslinking agent, 0.5 parts of heat stabilizer Add it into a high-speed mixer, mix it at a low speed for 3 minutes, and then put the uniformly mixed material into a twin-screw plate extruder, knead, extrude, and cool to obtain the final product. Wherein, the extrusion temperatures of each extrusion section in the twin-screw extruder are 165°C, 175°C, 185°C, 185°C, and 195°C, respectively. The product performance is shown in Table 1

Embodiment 3

[0025] Add 45 parts of PVA, 5 parts of poly-β-hydroxybutyric acid, 3 parts of glycerol, 30 parts of aluminum hydroxide, 3 parts of boehmite, 3 parts of foaming agent, 1 part of crosslinking agent, and 0.5 parts of heat stabilizer Put it into a high-speed mixer, mix at a low speed for 3 minutes, and then put the uniformly mixed material into a twin-screw extruder for mixing, extrusion, and cooling to obtain the final product. Wherein the extrusion temperature of each extrusion zone in the twin-screw extruder is 160°C, 170°C, 180°C, 180°C, 190°C respectively. The product performance is shown in Table 1

[0026] Table 1

[0027]

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Abstract

The invention provides a degradable halogen-free flame-retardant foaming material and a preparation method thereof. The material is prepared from, by mass, 45-70 parts of PVA, 5-15 parts of poly-beta-hydroxybutyric acid, 3-5 parts of glycerol, 20-30 parts of aluminum hydroxide, 3-5 parts of boehmite, 3-5 parts of a foaming agent, 1-3 parts of a cross-linking agent and 0.5 part of a heat stabilizerthrough mixing and extrusion. According to the degradable halogen-free flame-retardant foaming material provided by the invention, PVA with relatively low molecular weight and viscosity is selected as a base material, and the efficient micromolecular plasticizer glycerol is added into the PVA matrix, so the processing window of the degradable halogen-free flame-retardant foaming material is greatly expanded. And meanwhile, the finally prepared foaming material has partially degradable performance and flame retardant properties.

Description

technical field [0001] The invention relates to the field of general plastics, in particular to a degradable halogen-free flame-retardant foaming material and a preparation method thereof. Background technique [0002] Polymer foam is a foaming material based on polymer materials. Due to its good performance and stability, it is widely used in the packaging and transportation industry, the automobile industry and the construction industry. However, since the material body contains a large number of air bubbles, the burning speed is extremely fast after encountering an open flame, so it is necessary to modify the flame retardant of the foaming material used in special industries. The existing flame retardants added to foaming materials are usually bromine-antimony system flame retardant products, which will release a large amount of toxic gases during the combustion process, endangering human life, so the use of more environmentally friendly flame retardant systems is more u...

Claims

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Application Information

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IPC IPC(8): C08L29/04C08L67/04C08K13/02C08K5/053C08K3/22C08K3/38C08J9/32
CPCC08J9/32C08J9/0061C08J9/0066C08J9/0095C08J9/0023C08J2203/22C08J2329/04C08J2467/04
Inventor 杨桂生赵鑫姚晨光
Owner HEFEI GENIUS NEW MATERIALS
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