阅读说明：本技术 一种磷石膏填充塑料改性颗粒及其制备方法 (Phosphogypsum filled plastic modified particle and preparation method thereof ) 是由 杨雪松 于 2020-05-25 设计创作，主要内容包括：本发明公开了一种磷石膏填充塑料改性颗粒其制备方法,磷石膏填充塑料改性颗粒包括磷石膏粉体、聚烯烃类载体塑料原料、聚乙烯蜡、偶联剂、石蜡、抗氧剂、抗紫外线添加剂、色母剂。制备方法包括步骤一,制备磷石膏粉体、步骤二,磷石膏粉体表面活化处理、步骤三,造粒得到磷石膏填充塑料改性颗粒。本发明的磷石膏填充塑料改性颗粒其制备方法提高了磷石膏的利用价值,变废为宝,且能减少环境污染并,用该材料生产制造出来的塑料制品品质好,抗氧化性强。(The invention discloses phosphogypsum-filled plastic modified particles and a preparation method thereof. The preparation method comprises the first step of preparing the phosphogypsum powder, the second step of carrying out surface activation treatment on the phosphogypsum powder, and the third step of carrying out granulation to obtain the modified granules of the phosphogypsum filled plastics. The preparation method of the phosphogypsum-filled plastic modified particle improves the utilization value of phosphogypsum, changes waste into valuable, can reduce environmental pollution, and the plastic product produced by the material has good quality and strong oxidation resistance.)

1. The phosphogypsum filled plastic modified particle is characterized by being prepared from the following raw materials in parts by weight:

45-85% of phosphogypsum powder, 5-50% of polyolefin carrier plastic raw material, 1-5% of polyethylene wax, 0.5-1.5% of coupling agent, 0.5-5% of paraffin, 0.2-1% of antioxidant, 0.1-1% of anti-ultraviolet additive and 0.2-2% of color master batch.

2. The phosphogypsum-filled plastics modified granule of claim 1, which is characterized in that: the feed is prepared from the following raw materials in parts by weight:

60-75% of gypsum powder, 2-4% of polyethylene wax, 15-40% of polyolefin carrier plastic raw material, 0.7-1.2% of phosphorus coupling agent, 1.5-4.5% of paraffin, 0.6-1% of antioxidant, 0.2-0.9% of ultraviolet resistant additive and 0.5-1.8% of color master batch.

3. The phosphogypsum-filled plastics modified granule of claim 1, which is characterized in that: the mesh number of the phosphogypsum powder is 200-2000 meshes.

4. The phosphogypsum-filled plastics modified granule of claim 1, which is characterized in that: the coupling agent is silanes, titanate or aluminate.

5. The phosphogypsum-filled plastics modified granule of claim 1, which is characterized in that: the antioxidant is one of a phosphorus antioxidant, a phenol antioxidant and a sulfur antioxidant.

6. A method for preparing phosphogypsum-filled plastics modified granules according to claim 1, characterized by comprising the following steps:

firstly, preparing phosphogypsum powder, selecting a phosphogypsum raw material, calcining the phosphogypsum raw material to 300-600 ℃, cooling to normal temperature, and grinding by using a grinding machine to obtain the phosphogypsum powder;

secondly, carrying out surface activation treatment on the phosphogypsum powder, adding the phosphogypsum powder into a high-speed mixer according to a proportion, heating to 80-110 ℃, adding a coupling agent according to the proportion, and fully mixing by the high-speed mixer;

and step three, granulating, namely, fully mixing the polyethylene wax, the paraffin wax, the stearic acid, the polyolefin carrier plastic raw material, the antioxidant, the ultraviolet-resistant additive and the color master agent in the phosphogypsum powder subjected to surface activation treatment according to the proportion by a high-speed mixer to obtain a mixed raw material, and then granulating the mixed raw material by a parallel double-screw granulator to obtain the phosphogypsum filled plastic modified particles.

7. The method for preparing phosphogypsum-filled plastic modified particles according to claim 6, which is characterized in that: in the first step, the calcining temperature of the phosphogypsum raw material is 400 ℃.

8. The method for preparing phosphogypsum-filled plastic modified particles according to claim 6, which is characterized in that: after the phosphogypsum powder is prepared in the step one, the surface activation treatment or the sealed storage of the phosphogypsum powder can be carried out within one week.

9. The method for preparing phosphogypsum-filled plastic modified particles according to claim 6, which is characterized in that: in the first step, the mesh number of the phosphogypsum powder ground by the grinding machine is 200-2000 meshes.

Technical Field

The invention relates to the technical field of modified plastics, and particularly relates to phosphogypsum filled plastic modified particles and a preparation method thereof.

Background

In the plastic processing by using plastic raw materials, a large amount of mineral powder such as calcite, talcum powder and the like is used as fillers to change the physical properties of plastics and reduce the cost, and the exploitation and preparation of calcite, talcum powder, barite and the like can pollute the environment and occupy valuable mineral resources.

China is a large country of phosphogypsum resources, and the phosphogypsum becomes the second large industrial solid waste after fly ash in China. Because the production amount of the phosphogypsum is large and relatively centralized, and simultaneously, the phosphogypsum contains certain impurities and is difficult to be innoxiously treated, the global phosphogypsum comprehensive utilization rate is only about 20 percent at present. In 2018, the production of phosphogypsum in China is 7800 million tons, which is increased by 4 percent on a same scale, and hundreds of millions of tons of stacked phosphogypsum need to be digested at the present stage, so that the resource utilization of the phosphogypsum is urgent.

More than 80% of the phosphogypsum production emission of China is concentrated in Hubei, Yunnan, Guizhou, Anhui and Sichuan provinces, and the method has the typical regional characteristics, the spatial distribution of phosphorite causes uneven distribution of phosphogypsum production space, the additional value of downstream products is low, and the utilization difficulty is high. Secondly, annual discharge and annual stockpiling of phosphogypsum have restricted the sustainable development of the phosphorus chemical industry. At present, most of phosphorus fertilizer production enterprises in China can only heap up the solid waste phosphogypsum, so that not only is a large amount of land occupied, but also a large amount of capital is invested to carry out anti-seepage treatment on the piled-up phosphorus gypsum, and economic burden is brought to the development of the enterprises.

The phosphogypsum contains a large amount of phosphorus, fluorine, various salts and heavy metals, and the ecological environment such as atmosphere, soil, underground water and the like in a piled land and a nearby area is seriously harmed by improper treatment. Therefore, the promotion of resource utilization of the phosphogypsum has important significance in terms of society, environment and economy.

Disclosure of Invention

The invention aims to solve the technical problem of providing the phosphogypsum filled plastic modified particle which improves the utilization value of the phosphogypsum, changes waste into valuable and can reduce environmental pollution, and a plastic product produced and manufactured by the material has good quality and a preparation method thereof.

In order to solve the technical problems, the technical scheme of the invention is as follows:

the phosphogypsum filled plastic modified particle is prepared from the following raw materials in parts by weight:

45-85% of phosphogypsum powder, 5-50% of polyolefin carrier plastic raw material, 1-5% of polyethylene wax, 0.5-1.5% of stearic acid, 0.5-1.5% of coupling agent, 0.5-5% of paraffin, 0.2-1% of antioxidant, 0.1-1% of ultraviolet-resistant additive and 0.2-2% of color master batch.

Further, the feed is prepared from the following raw materials in parts by weight:

60-75% of gypsum powder, 2-4% of polyethylene wax, 15-40% of polyolefin carrier plastic raw material, 0.7-1.2% of phosphorus coupling agent, 1.5-4.5% of paraffin, 0.5-1.5% of stearic acid, 0.6-1% of antioxidant, 0.2-0.9% of ultraviolet resistant additive and 0.5-1.8% of color master batch.

Furthermore, the mesh number of the phosphogypsum powder is 200-2000 meshes.

Further, the coupling agent is silanes or titanates.

Further, the antioxidant is one of a phosphorus antioxidant, a phenol antioxidant and a sulfur antioxidant.

A preparation method of phosphogypsum filled plastic modified particles comprises the following steps:

firstly, preparing phosphogypsum powder, selecting a phosphogypsum raw material, calcining the phosphogypsum raw material to 300-600 ℃, cooling to normal temperature, and grinding by using a grinding machine to obtain the phosphogypsum powder;

secondly, carrying out surface activation treatment on the phosphogypsum powder, adding the phosphogypsum powder into a high-speed mixer according to a proportion, heating to 80-110 ℃, adding a coupling agent according to the proportion, and fully mixing by the high-speed mixer;

and step three, granulating, namely, fully mixing the polyethylene wax, the paraffin wax, the stearic acid, the polyolefin carrier plastic raw material, the antioxidant, the ultraviolet-resistant additive and the color master agent in the phosphogypsum powder subjected to surface activation treatment according to the proportion by a high-speed mixer to obtain a mixed raw material, and then granulating the mixed raw material by a parallel double-screw granulator to obtain the phosphogypsum filled plastic modified particles.

Further, in the first step, the temperature for calcining the phosphogypsum raw material is 400 ℃.

Further, after the phosphogypsum powder is prepared in the step one, the surface activation treatment of the phosphogypsum powder can be carried out within one week.

Furthermore, in the first step, the mesh number of the phosphogypsum powder ground by the grinding machine is 200-2000 meshes.

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

the ardealite filled plastic modified particles are applied to plastic filling, replace the original fillers such as calcium carbonate, talcum powder and the like, and can meet the properties of the original fillers such as calcium carbonate, talcum powder and the like in physical use performance.

The invention changes the phosphogypsum into valuable and replaces calcite, talcum powder and the like in plastic products to be applied to plastic processing, thereby reducing the environmental pollution and greatly improving the added value of the phosphogypsum.

The ardealite filling plastic modified particles can be used for manufacturing various plastic products such as buried HDPE corrugated pipes, automobile bumpers, PE communication pipes and the like, and the manufactured plastic products have good quality and strong oxidation resistance.

Detailed Description

The following further describes the embodiments of the present invention. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.