Preparation method of plastic and wood section with high flame-retardant property

A high flame retardant and high performance technology, applied in the field of plastic wood profiles and their preparation, can solve problems such as failure to meet the requirements of profile products, poor fluidity of plastic wood profiles, unstable extrusion melt, etc., and achieve good appearance and performance. The effect of superior mechanical properties and enhanced melt fluidity of the product

Active Publication Date: 2018-06-01
南京聚锋新材料有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, the flame retardant performance can be improved by adding flame retardant fillers, but it is difficult to obtain high-level flame retardant profile products. Because of environmental protection requirements, inorganic flame retardants are usually used, and inorganic flame retardants with high filling content In order to achieve high-level flame retardant performance, but too high filling amount of inorganic flame retardants will cause poor fluidity of wood-plastic profiles, resulting in unstable melt flow during extrusion, or melt fracture is difficult to extrude, and the profile strength poor
In the prior art, the compatibility of fillers is usually improved by adding lubricants and coupling agents, but the extruded melt still appears unstable and cracked, such as figure 1 As shown, still can not meet the requirements of profile products

Method used

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  • Preparation method of plastic and wood section with high flame-retardant property
  • Preparation method of plastic and wood section with high flame-retardant property
  • Preparation method of plastic and wood section with high flame-retardant property

Examples

Experimental program
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Effect test

Embodiment 1

[0040] A method for preparing a polyethylene-based plastic wood profile with high flame retardancy, comprising the following steps:

[0041] (1) Modification treatment of the flame retardant system: first, 20 parts of polyphosphazene and 80 parts of magnesium hydroxide with a particle size of 40um are placed in a ball mill, and 8 parts of 0.08mol / L maleic anhydride / ethanol solution are sprayed On the filler surface, grind for 30min.

[0042](2) Treatment and modification of wood powder: first dry the wood powder to a water content of 1.85%, then place 100 parts of wood powder, 5 parts of glyceryl ether-based silicone oil, and 1 part of alkylphenol polyoxyethylene ether in 100-110 In a high-speed mixer at ℃, the speed is 450r / min, and the mixture is mixed for 20 minutes;

[0043] (3) Mixing and granulation: first add 30 parts of recycled polyethylene plastic granules, 40 parts of modified flame retardant system, and 5 parts of SEBS elastomer into the mixer, and pre-mix for 30 ...

Embodiment 2

[0048] A method for preparing a polypropylene-based plastic wood profile with high flame retardancy, comprising the following steps:

[0049] (1) Modification treatment of flame retardant system: first, 30 parts of polyphosphazene and 70 parts of aluminum hydroxide with a particle size of 40um are placed in a ball mill, and 5 parts of 0.09mol / L maleic anhydride / ethanol solution are sprayed On the filler surface, grind for 25min.

[0050] (2) Treatment and modification of wood powder: first dry the wood powder to a water content of 2.28%, then place 100 parts of wood powder, 7 parts of glyceryl ether-based silicone oil, and 2 parts of alkylphenol polyoxyethylene ether in 100-110 In a high-speed mixer at ℃, the speed is 400r / min, and the mixture is mixed for 30min;

[0051] (3) Mixing and granulation: first add 30 parts of recycled polypropylene plastic granules, 25 parts of modified flame retardant system, and 1 part of SEBS elastomer into the mixer, and pre-mix for 20 minutes...

Embodiment 3

[0056] A method for preparing a polyethylene-polypropylene-based plastic-wood profile with high flame retardancy, comprising the following steps:

[0057] (1) Modification treatment of the flame retardant system: first, 25 parts of polyphosphazene, 35 parts of aluminum hydroxide with a particle size of 30um, and 35 parts of magnesium hydroxide with a particle size of 30um are placed in a ball mill, and 0.09mol / L of Spray 8 parts of maleic anhydride / ethanol solution on the filler surface and grind for 15 minutes.

[0058] (2) Treatment and modification of wood flour: first dry the wood flour to a water content of 2.52%, then place 100 parts of wood flour, 10 parts of glyceryl ether-based silicone oil, and 3 parts of alkylphenol polyoxyethylene ether in 100-110 In a high-speed mixer at ℃, the speed is 400r / min, and the mixture is mixed for 15 minutes;

[0059] (3) Mixing and granulation: first add 10 parts of recycled polyethylene plastic granules, 15 parts of recycled polyprop...

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Abstract

The invention discloses a preparation method of a plastic and wood section with high flame-retardant property, and belongs to the technical field of composite materials. The preparation method comprises the following steps of modifying a flame-retardant system, treating and modifying wood powder, mixing and granulating, treating granulated material, post-treating the surface and the like, so as toobtain the plastic and wood section with high flame-retardant property. The preparation method has the advantages that the defects in the prior art are overcome; the plastic and wood section with high flame-retardant property is prepared, the appearance is good, the mechanical property is good, the fireproof class reaches Class B, the safety and fireproof property are improved, and the application range is widened.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a plastic-wood profile with high flame-retardant performance and a preparation method thereof. Background technique [0002] Wood-plastic composite material is a new type of environmentally friendly composite material composed of wood or other biomass fiber materials and thermoplastics (PE, PP, PVC, etc.) or other materials. It has been widely used in garden landscape, outdoor building materials, furniture, logistics facilities, municipal facilities, docks and ports, indoor and outdoor decoration and other fields. [0003] With the popularization of the concept of safe plastics, the expansion of application fields, and the improvement of people's quality of life, the market has put forward higher requirements for the safety and environmental protection of wood-plastic materials, which involves the flame-retardant performance of wood-plastic composite materials. , esp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/12C08L85/02C08L97/02C08L53/02C08L51/06C08L71/02C08K13/06C08K9/04C08K3/22C08K5/134C08K5/098C08K3/36
CPCC08K2003/2224C08K2003/2227C08K2201/003C08L23/06C08L23/12C08L97/02C08L2201/02C08L2205/035C08L85/02C08L53/025C08L51/06C08L71/02C08K13/06C08K9/04C08K3/22C08K5/1345C08K5/098C08K5/20C08K3/36
Inventor 丁建生朱方政闫武姚龙周玲娟
Owner 南京聚锋新材料有限公司
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