阅读说明：本技术 一种超纤专用黑色阻燃剂及其制备方法 (Special black flame retardant for microfiber and preparation method thereof ) 是由 李国华 于 2019-10-10 设计创作，主要内容包括：本发明属于阻燃剂制备技术领域,尤其为一种超纤专用黑色阻燃剂及其制备方法,包括以下重量份的组分：碳素材料25-35份、微胶囊包覆红磷15-25份、氢氧化镁40-50份和聚四氟乙烯微粉1-10份,本配方采用碳素材料作为载体,充分的利用到该产品的膨胀特性,在超细纤维人造革的生产过程中,很好的起到阻隔火焰的作用,而微胶囊包覆的红磷,则利用无极性的矿物油包裹红磷,使得红磷性状稳定,使用安全,氢氧化镁作为一个价廉物美的无机阻燃剂,在配方中起到协效阻燃的作用,最后聚四氟乙烯的微粉能有效防止超细纤维在燃烧时产生的熔融低落现象。(The invention belongs to the technical field of preparation of flame retardants, and particularly relates to a special black flame retardant for microfiber and a preparation method thereof, wherein the special black flame retardant comprises the following components in parts by weight: the flame-retardant red phosphorus microcapsule comprises, by weight, 25-35 parts of a carbon material, 15-25 parts of microcapsule-coated red phosphorus, 40-50 parts of magnesium hydroxide and 1-10 parts of polytetrafluoroethylene micropowder, wherein the carbon material is used as a carrier in the formula, the expansion characteristic of the product is fully utilized, the flame-retardant red phosphorus microcapsule-coated artificial leather plays a good role in blocking flame in the production process of superfine fiber artificial leather, nonpolar mineral oil is used for coating the red phosphorus, so that the red phosphorus is stable in character and safe to use, the magnesium hydroxide is used as a cheap and good inorganic flame retardant, the synergistic flame-retardant effect is played in the formula, and finally the polytetrafluoroethylene micropowder can effectively prevent the phenomenon of melting and falling of superfine fibers during combustion.)

1. The special black flame retardant for the microfiber is characterized by comprising the following components in parts by weight: 25-35 parts of carbon material, 15-25 parts of microcapsule-coated red phosphorus, 40-50 parts of magnesium hydroxide and 1-10 parts of polytetrafluoroethylene micro powder.

2. The preparation method of the special black flame retardant for the microfiber according to claim 1, wherein the method comprises the following steps:

s1, respectively adding the carbon material, the magnesium hydroxide and the polytetrafluoroethylene into a particle crusher to perform crushing treatment, and crushing for 20-40 minutes to obtain micro powder;

s2, adding red phosphorus powder and non-polar mineral oil into a mixer for mixing, mixing for 10-20 minutes to obtain the microcapsule-coated red phosphorus, and taking out the microcapsule-coated red phosphorus;

s3, adding the carbon material, the magnesium hydroxide and the polytetrafluoroethylene in the S1 and S2 steps into a mixer, mixing for 15-30 minutes, adding the rest microcapsule-coated red phosphorus after uniformly mixing, and mixing for 5-10 minutes again;

and S4, preparing the flame retardant after mixing.

3. The preparation method of the special black flame retardant for the microfiber according to claim 2, wherein the preparation method comprises the following steps: the particle crusher is a micro powder particle crusher.

4. The preparation method of the special black flame retardant for the microfiber according to claim 2, wherein the preparation method comprises the following steps: the blendor is V-arrangement blendor.

5. The preparation method of the special black flame retardant for the microfiber according to claim 2, wherein the preparation method comprises the following steps: the particle diameter of the carbon material, the magnesium hydroxide, the polytetrafluoroethylene and the microcapsule-coated red phosphorus is 50 +/-0.5 mu m.

6. The special black flame retardant for the microfiber according to claim 1, which is characterized by comprising the following components in parts by weight: 30 parts of carbon material, 20 parts of microcapsule-coated red phosphorus, 45 parts of magnesium hydroxide and 5 parts of polytetrafluoroethylene micro powder.

7. The special black flame retardant for microfiber according to claim 6, wherein said carbon material is graphite.

8. The application of the special black flame retardant for the microfiber is characterized in that: adding a fire retardant into the microfiber, and preparing slurry by a wet method, wherein the slurry preparation sequence is as follows: DMF solvent → assistant, color paste → filler → resin, super fiber accounts for 25-35% of the total resin amount, and flame retardant accounts for 15-20% of the total resin amount.

Technical Field

The invention belongs to the technical field of preparation of flame retardants, and particularly relates to a special black flame retardant for microfiber and a preparation method thereof.

Background

The flame retardant is a functional additive for endowing a flammable polymer with flame retardancy, is mainly designed aiming at the flame retardancy of a high molecular material, has various types, and is divided into an additive flame retardant and a reactive flame retardant according to a using method, wherein the additive flame retardant is added into the polymer by a mechanical mixing method so as to enable the polymer to have flame retardancy.

With the rapid development of the ultrafine fibers, the ultrafine fibers are more and more widely applied to leather making, however, most of leather raw materials made of the ultrafine fibers are flammable materials, and thus, combustion may occur in the processes of production, storage, sale and use, which brings property loss to people, and thus, a black flame retardant special for the ultrafine fibers is urgently needed.

Disclosure of Invention

To solve the problems set forth in the background art described above. The invention provides a special black flame retardant for superfine fibers and a preparation method thereof, which have the characteristics of reducing the possibility of burning of the superfine fibers and preventing the phenomenon of melting and falling of the superfine fibers during burning.

In order to achieve the purpose, the invention provides the following technical scheme: a special black flame retardant for microfiber comprises the following components in parts by weight: 25-35 parts of carbon material, 15-25 parts of microcapsule-coated red phosphorus, 40-50 parts of magnesium hydroxide and 1-10 parts of polytetrafluoroethylene micro powder.

A preparation method of a special black flame retardant for microfiber comprises the following steps:

s1, respectively adding the carbon material, the magnesium hydroxide and the polytetrafluoroethylene into a particle crusher to perform crushing treatment, and crushing for 20-40 minutes to obtain micro powder;

s2, adding red phosphorus powder and non-polar mineral oil into a mixer for mixing, mixing for 10-20 minutes to obtain the microcapsule-coated red phosphorus, and taking out the microcapsule-coated red phosphorus;

s3, adding the carbon material, the magnesium hydroxide and the polytetrafluoroethylene in the S1 and S2 steps into a mixer, mixing for 15-30 minutes, adding the rest microcapsule-coated red phosphorus after uniformly mixing, and mixing for 5-10 minutes again;

and S4, preparing the flame retardant after mixing.

Preferably, the particle crusher is a micro powder particle crusher.

Preferably, the mixer is a V-shaped mixer.

Preferably, the particle diameter of the carbon material, the magnesium hydroxide, the polytetrafluoroethylene and the microcapsule-coated red phosphorus is 50 +/-0.5 mu m.

The special black flame retardant for the microfiber comprises the following components in parts by weight: 30 parts of carbon material, 20 parts of microcapsule-coated red phosphorus, 45 parts of magnesium hydroxide and 5 parts of polytetrafluoroethylene micro powder.

Preferably, the carbon material is graphite.

The application of the black flame retardant special for the microfiber comprises the steps of adding the flame retardant into the microfiber, and preparing slurry by a wet method, wherein the slurry preparation sequence is as follows: DMF solvent → assistant, color paste → filler → resin, super fiber accounts for 25-35% of the total resin amount, and flame retardant accounts for 15-20% of the total resin amount.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the carbon material is used as a carrier in the formula, the expansion characteristic of the product is fully utilized, the flame blocking effect is well achieved in the production process of the superfine fiber artificial leather, the red phosphorus coated by the microcapsule is coated by non-polar mineral oil, so that the red phosphorus is stable in character and safe to use, the magnesium hydroxide is used as an inorganic flame retardant which is cheap and good, the synergistic flame retardant effect is achieved in the formula, and finally, the melting and falling phenomenon generated by burning of the superfine fiber can be effectively prevented by the micropowder of polytetrafluoroethylene.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.