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Halogen-free flame-retardant PP-GF20 composite material and preparation method thereof

A technology of PP-GF20 and composite materials, which is applied in the field of halogen-free flame-retardant PP-GF20 composite materials and its preparation, can solve the problems of high shrinkage rate of polypropylene molding, low thermal deformation temperature, and insufficient wear resistance, etc., and achieve Uniform properties, simple preparation method, and the effect of reducing odor

Inactive Publication Date: 2018-10-02
ZHONGSHAN LVLANG ADDITIVES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, polypropylene also has defects such as large molding shrinkage, low temperature brittleness, insufficient wear resistance, low heat distortion temperature, and poor light resistance.

Method used

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  • Halogen-free flame-retardant PP-GF20 composite material and preparation method thereof
  • Halogen-free flame-retardant PP-GF20 composite material and preparation method thereof
  • Halogen-free flame-retardant PP-GF20 composite material and preparation method thereof

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preparation example Construction

[0046] The invention also discloses a preparation method of a halogen-free flame-retardant PP-GF20 composite material, which specifically includes the following steps:

[0047] (1) Weigh each raw material of a halogen-free flame-retardant PP-GF20 composite material described in any one of claims 1-8, and set aside;

[0048] (2) Add the wood powder, flame retardant polyether, impact modifier, black masterbatch and odor absorber, and photocatalyst in the step (1) into a high-speed mixer and stir for 3-5 minutes to obtain a uniform mixture;

[0049] (3) Add the PP-GF20, plasticizer, toughening agent and auxiliary agent weighed in the step (1) to the homogeneous mixture prepared in the step (2) in sequence and continue stirring at high speed for 10 -15min, obtain the mixed material;

[0050] (4) Extrude the mixed material obtained in step (3) in a twin-screw extruder to obtain PP-GF20 composite material particles.

[0051] In order to further realize the technical effect of the...

Embodiment 1

[0054] Oxidation treatment of wood flour:

[0055] After the wood flour is baked at 260-300°C for 10-15 minutes, it is added to a saturated solution of sodium silicate at a solid-to-liquid ratio of 1.5-2:0.8-1.5, soaked for 30-40 hours, and then dried and pulverized in a nitrogen environment. Obtain oxidized wood flour.

Embodiment 2

[0057] Preparation of flame retardant polyether:

[0058] Add inorganic fluoride, polyether, catalyst, and polytetrafluoroethylene with a mass ratio of 1-2:0.5-0.8:1.4-2.3:1.5-3 in a closed reactor. In non-oxygen conditions, the temperature is 700-800 Under the reaction conditions of ℃, pressure 70-90Mpa, and voltage 1.5-23,000 volts, mixing and stirring for 1-3 hours, the flame-retardant polyether is obtained.

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Abstract

The invention discloses a halogen-free flame-retardant PP-GF20 composite material and a preparation method thereof. The halogen-free flame-retardant PP-GF20 composite material comprises the followingcomponents in parts by weight: 60-80 parts of PP-GF20, 30-40 parts of wood flour, 10-20 parts of flame-retardant polyether, 10-15 parts of an impact modifier, 5-7 parts of a flexibilizer, 2-5 parts ofa plasticizer and 3-6 parts of a black color master batch. The halogen-free flame-retardant PP-GF20 composite material prepared by the invention has excellent physical and mechanical properties and also has excellent flame-retardant property, and can reach the level-V0 fireproof and flame-retardant effect. Moreover, the preparation process is simple, industrial production is easily performed, andthe composite material has extremely high industrial production value and industrial development prospects.

Description

technical field [0001] The invention relates to the technical field of polymer materials, and more specifically relates to a halogen-free flame-retardant PP-GF20 composite material and a preparation method thereof. Background technique [0002] As a general-purpose plastic, polypropylene (PP) has light weight, excellent comprehensive performance, simple production process and wide application. It has become one of the fastest-growing plastics in general-purpose plastics. Although polypropylene has many advantages, due to its low oxygen index and flammability, its application in the fields of electronics, electrical appliances and automobiles has been greatly restricted. In recent years, the country has paid more and more attention to the flame retardancy of plastics, especially for plastic accessories used in household appliances, aviation, automobiles and other industries. [0003] In addition, polypropylene also has defects such as large molding shrinkage, low temperature...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L97/02C08L71/00C08K13/04C08K7/24C08K7/26C08K3/22C08H8/00
CPCC08H8/00C08K2003/2241C08L23/12C08L2201/02C08L2201/08C08L2201/22C08L2203/20C08L2205/035C08L2205/16C08L97/02C08L71/00C08K13/04C08K7/24C08K7/26C08K3/22
Inventor 李保卫孙栓李宗科
Owner ZHONGSHAN LVLANG ADDITIVES CO LTD
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