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Flame retardant composite material and preparation method thereof

A composite material and flame retardant technology, which is applied in the field of flame retardant composite materials and its preparation, can solve the problems of high cost, large amount of addition, and reduced mechanical properties of polymer materials, so as to achieve small mechanical properties and improve flame retardant Performance, the effect of good market application value

Active Publication Date: 2019-08-09
GUIZHOU MATERIAL IND TECH INSTITUE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Additive halogen-free flame retardants are usually organic or inorganic powders. When using additive-type halogen-free flame retardants, they usually have disadvantages such as large amount of addition, high cost, and reduced mechanical properties of polymer materials.

Method used

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  • Flame retardant composite material and preparation method thereof
  • Flame retardant composite material and preparation method thereof
  • Flame retardant composite material and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0029] The embodiment of the present invention also provides a method for preparing a composite material, which includes the following steps: mixing the polymer substrate, phosphogypsum and DOPO or its derivatives, and then performing molding treatment. The preparation process does not require complicated process steps, and the molding process can be adjusted according to the application situation to produce products that meet the requirements of the application scenario.

[0030] Specifically, the molding process is to melt and extrude the mixed raw materials, then cool and pelletize. The processing temperature of the melt extrusion process is 180-220°C, which can be carried out by using a twin-screw extruder. The materials are melted, extruded and mixed evenly at high temperature, and then cut into granules of required size after cooling.

[0031] Preferably, the polymer substrate, phosphogypsum and DOPO or its derivatives are dried separately before mixing the raw material...

Embodiment 1

[0034] This embodiment provides a flame-retardant composite material, which includes 92 parts of polymer base material, 0.1 part of phosphogypsum and 8 parts of DOPO in parts by mass; wherein, the polymer base material is polyethylene terephthalate The particle size of phosphogypsum is 5nm.

[0035] This embodiment also provides a method for preparing a composite material, comprising the steps of:

[0036] According to the above weight parts, take the polymer substrate, DOPO, and phosphogypsum to dry separately for later use; mix the above dried components evenly and put them into the extruder for melt blending. The processing temperature is: 180°C, after cooling , Diced.

Embodiment 2

[0038] This embodiment provides a flame-retardant composite material, which includes 87 parts of polymer base material, 3 parts of phosphogypsum and 10 parts of DOPO in parts by mass; wherein, the polymer base material is polybutylene terephthalate , The particle size of phosphogypsum is 50nm.

[0039] This embodiment also provides a method for preparing a composite material, comprising the steps of:

[0040]According to the above weight parts, take the polymer substrate, DOPO, and phosphogypsum to dry separately for later use; mix the above dried components evenly and put them into the extruder for melt blending. The processing temperature is: 220°C, after cooling , Diced.

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Abstract

Relating to the technical field of high polymer materials, the invention discloses a flame retardant composite material and a preparation method thereof. The flame retardant composite material includes, by mass, 50-95 parts of a macromolecular matrix, 0.1-5 parts of phosphogypsum and 5-15 parts of DOPO or a derivative thereof; preferably, the macromolecular matrix is selected from at least one ofpolyester, polyamide, a thermoplastic elastomer and polyolefin. The preparation method of the composite material adopts the above formula materials as the raw materials, is simple and feasible, and issuitable for industrial production. The prepared composite material has good flame retardant properties, and the adding amount of flame retardant is small, thus ensuring the mechanical properties ofthe material.

Description

technical field [0001] The invention relates to the technical field of polymer materials, and in particular to a flame-retardant composite material and a preparation method thereof. Background technique [0002] With the improvement of the requirements for the flame retardant performance of composite materials, halogen-free flame retardant polymer composites have received more and more attention. Additive halogen-free flame retardants are usually organic or inorganic powders. When using additive-type halogen-free flame retardants, they usually have disadvantages such as large amount of addition, high cost, and reduced mechanical properties of polymer materials. [0003] Therefore, in order to improve the flame retardancy of polymer materials, it is of great market application value to develop composite materials with less flame retardant addition and good dispersion. Contents of the invention [0004] The object of the present invention is to provide a flame-retardant com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L67/03C08L77/02C08L77/06C08L75/04C08L53/00C08L23/02C08L23/06C08L23/12C08L23/20C08K5/5313C08K3/30C08K5/5399
CPCC08K3/30C08K5/5313C08K5/5399C08K2003/3045C08K2201/003C08K2201/011C08L2201/02C08L2207/04C08L67/02C08L67/03C08L77/02C08L77/06C08L75/04C08L53/00C08L23/02C08L23/06C08L23/12C08L23/20
Inventor 周颖郭建兵秦舒浩何玮頔徐定红高成涛伍宏明
Owner GUIZHOU MATERIAL IND TECH INSTITUE
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