阅读说明：本技术 一种应用于led灯罩的耐黄变无卤阻燃剂制备方法 (Preparation method of yellowing-resistant halogen-free flame retardant applied to LED lampshade ) 是由 邓娇容 甘祖荣 常红丽 于 2019-10-28 设计创作，主要内容包括：本发明公开了一种应用于LED灯罩的耐黄变无卤阻燃剂制备方法,具体涉及阻燃剂加工技术领域,包括以下重量份成分：氢氧化铝颗粒50-80份、增容剂10-20份、聚磷酸铵粉末10-20份、磷酸三异丙苯酯5-10份、白云石粉末10-20份、粘土20-40份、过氧化苯甲酰1-5份、耐黄剂10-20份和去离子水60-100份。本发明通过添加的氢氧化铝颗粒,并根据氢氧化铝本身具有的阻燃、消烟、填充三个功能,且不挥发,无毒,又可与多种物质产生协同阻燃作用,提高阻燃剂的阻燃效果,且更加环保,同时提高了耐黄变性能,制备工艺简单,方便操作,适合推广使用。(The invention discloses a preparation method of a yellowing-resistant halogen-free flame retardant applied to an LED lampshade, and particularly relates to the technical field of flame retardant processing, wherein the preparation method comprises the following components in parts by weight: 50-80 parts of aluminum hydroxide particles, 10-20 parts of a compatibilizer, 10-20 parts of ammonium polyphosphate powder, 5-10 parts of triisopropylphenyl phosphate, 10-20 parts of dolomite powder, 20-40 parts of clay, 1-5 parts of benzoyl peroxide, 10-20 parts of a yellow-resistant agent and 60-100 parts of deionized water. The flame retardant has the advantages that the added aluminum hydroxide particles have three functions of flame retardance, smoke abatement and filling according to the aluminum hydroxide, are nonvolatile and nontoxic, can generate a synergistic flame retardant effect with various substances, improve the flame retardant effect of the flame retardant, are more environment-friendly, improve the yellowing resistance, are simple in preparation process, convenient to operate and suitable for popularization and use.)

1. The yellowing-resistant halogen-free flame retardant applied to the LED lampshade is characterized by comprising the following components in parts by weight: 50-80 parts of aluminum hydroxide particles, 10-20 parts of a compatibilizer, 10-20 parts of ammonium polyphosphate powder, 5-10 parts of triisopropylphenyl phosphate, 10-20 parts of dolomite powder, 20-40 parts of clay, 1-5 parts of benzoyl peroxide, 10-20 parts of a yellow-resistant agent and 60-100 parts of deionized water.

2. The yellowing-resistant halogen-free flame retardant applied to the LED lampshade of claim 1 is characterized by comprising the following components in parts by weight: 60-70 parts of aluminum hydroxide particles, 12-18 parts of a compatibilizer, 12-18 parts of ammonium polyphosphate powder, 6-8 parts of triisopropylphenyl phosphate, 12-18 parts of dolomite powder, 25-35 parts of clay, 2-4 parts of benzoyl peroxide, 12-18 parts of a yellow-resistant agent and 70-90 parts of deionized water.

3. The yellowing-resistant halogen-free flame retardant applied to the LED lampshade of claim 1 is characterized by comprising the following components in parts by weight: 65 parts of aluminum hydroxide particles, 15 parts of a compatibilizer, 15 parts of ammonium polyphosphate powder, 7 parts of triisopropylphenyl phosphate, 15 parts of dolomite powder, 30 parts of clay, 3 parts of benzoyl peroxide, 15 parts of a yellow-resistant agent and 80 parts of deionized water.

4. The yellowing-resistant halogen-free flame retardant applied to the LED lampshade as claimed in claim 1, wherein: the mesh number of the aluminum hydroxide particles, the ammonium polyphosphate powder and the dolomite powder is 100-200 meshes.

5. The yellowing-resistant halogen-free flame retardant applied to the LED lampshade as claimed in claim 1, wherein: the compatibilizer is maleic anhydride grafting compatibilizer or other high molecular compatibilizer which can combine two polymers together.

6. The preparation method of the yellowing-resistant halogen-free flame retardant applied to the LED lampshade according to any one of claims 1 to 5, which is characterized by comprising the following steps:

preheating the interior of a reaction kettle for 2 minutes, pouring a proper amount of surface treating agent into the reaction kettle, putting prepared aluminum hydroxide particles into the reaction kettle, continuously heating the interior of the reaction kettle to raise the temperature to 80 ℃, and then stirring the interior of the reaction kettle at a high speed for 30-40 minutes to form modified aluminum hydroxide particles;

step two, putting the prepared clay into a ball mill for fully crushing, screening the crushed clay by using a screen with the aperture of 1-2mm, putting the screened crushed clay, dolomite powder, ammonium polyphosphate powder and triisopropylphenyl phosphate into a second reaction kettle which is preheated for 2 minutes, sealing the reaction kettle, raising the temperature in the reaction kettle to 80 ℃, stirring for 30-40 minutes again, and naturally cooling for 2 hours to obtain a mixture of the clay, the dolomite powder, the ammonium polyphosphate powder and the triisopropylphenyl phosphate;

step three, putting the prepared compatibilizer, benzoyl peroxide, a yellow-resistant agent and deionized water into a third reaction kettle which is preheated for 2 minutes, raising the temperature in the reaction kettle to 50-60 ℃, stirring for 10-15 minutes, naturally cooling for 30 minutes, pouring the mixture into a glass container, sealing and standing for 1-3 hours;

step four, putting the mixture obtained in the step three and the mixture obtained in the step two into the reaction kettle mentioned in the step one, heating the temperature in the reaction kettle to 30 ℃, fully stirring the raw materials in the reaction kettle for 20-30 minutes, putting the prepared article into a sealable container, and naturally cooling at normal temperature to obtain the yellowing-resistant halogen-free flame retardant.

7. The preparation method of the yellowing-resistant halogen-free flame retardant applied to the LED lampshade according to claim 6, wherein the preparation method comprises the following steps: in the first step, the stirring speed is 100-.

8. The preparation method of the yellowing-resistant halogen-free flame retardant applied to the LED lampshade according to claim 6, wherein the preparation method comprises the following steps: and in the second step, the screen is formed by weaving stainless steel or other metal materials with the surface plated with an anti-oxidation layer in a staggered manner.

Technical Field

The invention relates to the technical field of flame retardant processing, in particular to a preparation method of a yellowing-resistant halogen-free flame retardant applied to an LED lampshade.

Background

The flame retardant is a functional auxiliary agent for endowing inflammable polymers with flame resistance, is mainly designed aiming at the flame retardance of high molecular materials, the flame retardant has various types and is divided into an additive flame retardant and a reactive flame retardant according to a using method, after the conventional LED lampshade is used for a long time, the inner wall of the lampshade is very easy to yellow, and for a halogen-free flame retardant additive, a phosphorus compound and a metal hydroxide are mainly used, the two compounds are non-volatile and do not generate corrosive gas during combustion, are called pollution-free flame retardants, and in addition, a silicon flame retardant, a nitrogen flame retardant and other novel halogen-free flame retardants are also provided, and the novel halogen-free flame retardants become new products in accordance with the development trend of international standards.

However, in the use process of the existing halogen-free flame retardant for the LED lamp shade, due to improper treatment of raw materials, the flame retardant effect of the flame retardant and the yellowing resistance of the LED lamp shade are affected.

Disclosure of Invention

In order to overcome the defects in the prior art, the embodiment of the invention provides a preparation method of a yellowing-resistant halogen-free flame retardant applied to an LED lampshade, by adding aluminum hydroxide particles, according to the three functions of flame retardance, smoke abatement and filling of the aluminum hydroxide, the aluminum hydroxide particles are non-volatile and non-toxic, can generate a synergistic flame retardant effect with various substances, improves the flame retardant effect of the flame retardant, is more environment-friendly, improves the yellowing resistance, has a simple preparation process, is convenient to operate and is suitable for popularization and use.

In order to achieve the purpose, the invention provides the following technical scheme: the yellowing-resistant halogen-free flame retardant applied to the LED lampshade specifically comprises the following components in parts by weight: 50-80 parts of aluminum hydroxide particles, 10-20 parts of a compatibilizer, 10-20 parts of ammonium polyphosphate powder, 5-10 parts of triisopropylphenyl phosphate, 10-20 parts of dolomite powder, 20-40 parts of clay, 1-5 parts of benzoyl peroxide, 10-20 parts of a yellow-resistant agent and 60-100 parts of deionized water.

In a preferred embodiment, the composition specifically comprises the following components in parts by weight: 60-70 parts of aluminum hydroxide particles, 12-18 parts of a compatibilizer, 12-18 parts of ammonium polyphosphate powder, 6-8 parts of triisopropylphenyl phosphate, 12-18 parts of dolomite powder, 25-35 parts of clay, 2-4 parts of benzoyl peroxide, 12-18 parts of a yellow-resistant agent and 70-90 parts of deionized water.

In a preferred embodiment, the composition specifically comprises the following components in parts by weight: 65 parts of aluminum hydroxide particles, 15 parts of a compatibilizer, 15 parts of ammonium polyphosphate powder, 7 parts of triisopropylphenyl phosphate, 15 parts of dolomite powder, 30 parts of clay, 3 parts of benzoyl peroxide, 15 parts of a yellow-resistant agent and 80 parts of deionized water.

In a preferred embodiment, the mesh sizes of the aluminum hydroxide particles, the ammonium polyphosphate powder and the dolomite powder are all 100-200 meshes.

In a preferred embodiment, the compatibilizer is maleic anhydride grafted compatibilizer or other high molecular compatibilizer that binds two polymers together.

A preparation method of a yellowing-resistant halogen-free flame retardant applied to an LED lampshade comprises the following specific preparation steps:

preheating the interior of a reaction kettle for 2 minutes, pouring a proper amount of surface treating agent into the reaction kettle, putting prepared aluminum hydroxide particles into the reaction kettle, continuously heating the interior of the reaction kettle to raise the temperature to 80 ℃, and then stirring the interior of the reaction kettle at a high speed for 30-40 minutes to form modified aluminum hydroxide particles;

step two, putting the prepared clay into a ball mill for fully crushing, screening the crushed clay by using a screen with the aperture of 1-2mm, putting the screened crushed clay, dolomite powder, ammonium polyphosphate powder and triisopropylphenyl phosphate into a second reaction kettle which is preheated for 2 minutes, sealing the reaction kettle, raising the temperature in the reaction kettle to 80 ℃, stirring for 30-40 minutes again, and naturally cooling for 2 hours to obtain a mixture of the clay, the dolomite powder, the ammonium polyphosphate powder and the triisopropylphenyl phosphate;

step three, putting the prepared compatibilizer, benzoyl peroxide, a yellow-resistant agent and deionized water into a third reaction kettle which is preheated for 2 minutes, raising the temperature in the reaction kettle to 50-60 ℃, stirring for 10-15 minutes, naturally cooling for 30 minutes, pouring the mixture into a glass container, sealing and standing for 1-3 hours;

step four, putting the mixture obtained in the step three and the mixture obtained in the step two into the reaction kettle mentioned in the step one, heating the temperature in the reaction kettle to 30 ℃, fully stirring the raw materials in the reaction kettle for 20-30 minutes, putting the prepared article into a sealable container, and naturally cooling at normal temperature to obtain the yellowing-resistant halogen-free flame retardant.

In a preferred embodiment, in the first step, the stirring rate is 100-.

In a preferred embodiment, the screen in the second step is made of a stainless steel material or other metal material with an anti-oxidation layer coated on the surface by interlacing weaving.

The invention has the technical effects and advantages that:

1. according to the invention, the added aluminum hydroxide particles have three functions of flame retardance, smoke abatement and filling according to the aluminum hydroxide, are non-volatile and non-toxic, can generate a synergistic flame retardant effect with various substances, improve the flame retardant effect of the flame retardant, and the added compatibilizer effectively promotes incompatible various polymers to be combined into a whole, so that a stable blend is obtained, various raw materials can be fully compatible and mixed, the flame retardant effect of the flame retardant is effectively improved, and the aluminum hydroxide is more environment-friendly;

2. according to the flame retardant, the ammonium polyphosphate powder and the triisopropylphenyl phosphate are added, the ammonium polyphosphate powder, the triisopropylphenyl phosphate, the dolomite powder and the clay are fully mixed, and then the compatibilizer, the benzoyl peroxide and the yellowing resistance agent are added, so that the flame retardant and the yellowing resistance of the flame retardant are further improved, the preparation process is simple, the operation is convenient, and the flame retardant is suitable for popularization and use.

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.