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High-concentration and high-blacking-capability microcapsule-coated red phosphorus flame retardant masterbatch and preparation method thereof

A technology of coating red phosphorus and microcapsules, which is applied in the field of high-concentration and high-blackening microcapsule-coated red phosphorus flame retardant masterbatches and its preparation, can solve the problems of deterioration of material mechanical properties, corrosion of processing equipment, and polymer mechanics. It can improve the chemical stability, improve the flame retardant efficiency and improve the effect of black dyeing.

Active Publication Date: 2016-11-02
广州市丰驰新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some defects of red phosphorus flame retardants seriously limit its application in the field of polymer flame retardancy, such as: (1) red phosphorus will be slowly oxidized in the air to form H 3 PO 2 、H 3 PO 3 、H 3 PO 4 Such substances are easy to precipitate after long-term storage, deteriorate the mechanical properties of materials, and corrode processing equipment; (2) When red phosphorus flame-retardant products are used for a long time, they slowly release PH 3 gas, pollute the environment, and endanger people's health; (3) the compatibility of inorganic red phosphorus and organic resins is poor, and the dispersion in resins is poor, which has a greater impact on the mechanical properties of polymers, which also limits to a certain extent (4) The appearance of red phosphorus is reddish brown, and its flame retardant products can only be made into red or black, and it is difficult to achieve the effect of pure black
The above shortcomings greatly limit the direct use of red phosphorus, so it is necessary to treat red phosphorus, such as microencapsulation, to increase its stability, compatibility, etc., so that it can meet the use standards and give full play to its high efficiency. cheap advantage

Method used

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  • High-concentration and high-blacking-capability microcapsule-coated red phosphorus flame retardant masterbatch and preparation method thereof
  • High-concentration and high-blacking-capability microcapsule-coated red phosphorus flame retardant masterbatch and preparation method thereof
  • High-concentration and high-blacking-capability microcapsule-coated red phosphorus flame retardant masterbatch and preparation method thereof

Examples

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Effect test

preparation example Construction

[0052] A preparation method of high-concentration and high-blackening microcapsules coated red phosphorus flame retardant masterbatch, which comprises the following steps:

[0053] 1) Dispersion treatment of red phosphorus: add part of water and red phosphorus into the reaction kettle according to the formula amount, stir evenly, add polyethylene glycol and stir until emulsification;

[0054] 2) Adding aniline hydrochloride: under stirring at normal temperature, slowly add aniline hydrochloride to the system of the above step 1);

[0055] 3) Polyaniline-coated red phosphorus: Dissolve ammonium persulfate in the remaining water to obtain an ammonium persulfate solution, then add the ammonium persulfate solution to the system of the above step 2) at normal temperature, and continue stirring until the Complete response;

[0056]4) Filtration and washing: step 3) washing the reacted product after filtering to obtain microcapsule-coated red phosphorus;

[0057] 5) Drying and gran...

Embodiment 1

[0068] A high-concentration and high-blackening microcapsule-coated red phosphorus flame retardant masterbatch is prepared from coated red phosphorus and modified polyolefin carrier, and the mass ratio of coated red phosphorus and modified polyolefin carrier is 7 : 3; the coated red phosphorus is prepared from red phosphorus powder and coated raw materials, wherein the coated raw materials include water, aniline hydrochloride, ammonium persulfate, polyethylene glycol; wherein each of the red phosphorus and coated raw materials The consumption of component is respectively in parts by weight:

[0069] 60 parts of red phosphorus,

[0070] 120 parts of water,

[0071] 0.5 parts of polyethylene glycol,

[0072] 3 parts of aniline hydrochloride,

[0073] 2.4 parts of ammonium persulfate;

[0074] The preparation method of the high-concentration and high-blackening microcapsules coated red phosphorus flame retardant masterbatch comprises the following steps:

[0075] 1) Grinding...

Embodiment 2

[0083] A high-concentration and high-blackening microcapsule-coated red phosphorus flame retardant masterbatch is prepared from coated red phosphorus and modified polyolefin carrier, and the mass ratio of coated red phosphorus and modified polyolefin carrier is 7 : 3; the coated red phosphorus is prepared from red phosphorus powder and coated raw materials, wherein the coated raw materials include water, aniline hydrochloride, ammonium persulfate, polyethylene glycol; wherein each of the red phosphorus and coated raw materials The consumption of component is respectively in parts by weight:

[0084] 70 parts of red phosphorus,

[0085] 250 parts of water,

[0086] 2 parts of polyethylene glycol,

[0087] 5 parts of aniline hydrochloride,

[0088] 5 parts of ammonium persulfate;

[0089] The preparation method of the high-concentration and high-blackening microcapsules coated red phosphorus flame retardant masterbatch comprises the following steps:

[0090] 1) Dispersion t...

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Abstract

The invention discloses high-concentration and high-blacking-capability microcapsule-coated red phosphorus flame retardant masterbatch and a preparation method thereof. The high-concentration and high-blacking-capability microcapsule-coated red phosphorus flame retardant masterbatch is prepared from coated red phosphorus and a modified polyolefin carrier, wherein the mass ratio of the coated red phosphorus to the modified polyolefin carrier is 7:3; the coated red phosphorus is prepared from red phosphorus powder and a coating raw material. The preparation method comprises the following steps: pretreating red phosphorus, adding the coating raw material, carrying out in-situ polymerization and coating, and carrying out filtration, washing, drying, granulation and other steps. According to the high-concentration and high-blacking-capability microcapsule-coated red phosphorus flame retardant masterbatch and the preparation method, the problems that a red phosphorus flame retardant is not black enough during use, and cannot be blacked effectively when being added with black dye are solved effectively; the flame retardant efficiency can be improved; the chemical stability of red phosphorus and the compatibility of red phosphorus to a polymer substrate are improved.

Description

technical field [0001] The invention belongs to the technical field of additives for synthetic polymer materials, and in particular relates to a high-concentration and high-blackening microcapsule-coated red phosphorus flame retardant masterbatch and a preparation method thereof. Background technique [0002] With the development of polymer technology, synthetic materials with excellent performance have begun to enter various fields of the national economy. At the same time, people have to face new fire threats. Since most polymer materials are combustible and will release a large amount of toxic and harmful gases during combustion, flame-retardant modification of polymer materials is an important research direction in the field of polymer modification in the future. Flame retardant, also known as fire retardant, fire retardant or flame retardant, is an additive used to improve the flame resistance of materials, prevent materials from being ignited and inhibit flame propaga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/26C08K9/00C08K9/02C08K9/10C08K3/02
CPCC08K3/02C08K9/00C08K9/02C08K9/10C08K2003/026C08L23/26
Inventor 颜子洋
Owner 广州市丰驰新材料有限公司
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