TWM629019U - Biodegradable composite material - Google Patents

Abstract

The present invention creates a biodegradable composite material, which is granular and contains main raw materials. The main raw materials include calcium carbonate particles, cellulose acetate particles, calcium oxide particles, talc particles and quartz particles. The content of the calcium carbonate particles is greater than The content of the cellulose acetate particles, the calcium oxide particles, the talc particles and the quartz particles; thereby, the articles processed and molded from the composite material have environmental protection and antibacterial effects, and the raw materials used in the composite material are easy to obtain, The manufactured articles are easy to store, and are not prone to embrittlement and cracking.

Description

Biodegradable composite materials

This work is about a composite material, especially a biodegradable composite material.

According to the press, the concept of green sustainability makes consumers more inclined to choose environmentally friendly items. However, most common items are made of plastic materials. Although plastic products bring consumers a lot of convenience in use, they are not in line with the global The principle of environmental protection of plastics is not considered, and the natural degradation function is not considered. Even if there is a degradation function, the plastic itself still occupies a large proportion. In addition to the high material cost, it cannot achieve the effect of effective degradation to maintain the environmental protection of the land, and plastic products are used in When a large amount of waste is piled up as garbage, it will take up a lot of land use resources. The damage to the pH value of the land, environmental sanitation and soil quality itself is also irreversible. If a large number of incineration methods are considered, it is more likely to cause damage. A large amount of toxic and carbon dioxide gas is produced, and the air pollution treatment equipment of the incinerator needs to be increased, resulting in the high cost of the incinerator equipment, which is not in line with the economic benefits of industrial utilization.

In order to improve the above-mentioned problems, there is a patent case such as Application No. 098102517 "Environmentally Friendly Molded Products", which includes: a main body is made of a biodegradable composition molded into a predetermined shape in a predetermined manner, the The biodegradable composition includes a polymer component, and the polymer component includes a main raw material selected from poly-1,4-butylene succinate, the polymer group of the biodegradable composition The part also contains a secondary raw material mixed with the main raw material, and the secondary raw material is selected from polylactic acid.

The polylactic acid (Polylactic Acid or Polylactide, abbreviated PLA) is a new type of biodegradable material, which is made from starch raw materials proposed by renewable plant resources (such as corn). The strains are fermented to produce high-purity lactic acid, and then polylactic acid with a certain molecular weight is synthesized by chemical synthesis methods. It has good biodegradability and can be completely degraded by microorganisms in nature after use, and finally generates carbon dioxide and water, which does not pollute the environment, which is very beneficial to protect the environment and is recognized as an environmentally friendly material.

However, most of the polylactic acid is made of corn flour. Not only is the supply of raw materials of corn flour limited, which increases the difficulty and cost of making environmentally friendly molded products, and the environmentally friendly molded products made are not easy to store and are prone to embrittlement. , Cracking situation.

In view of the above-mentioned shortcomings of the conventional biodegradable compositions, the author of this creation has come up with the idea of creation. After many discussions, sample tests, and many revisions and improvements, this creation was launched.

This creation provides a biodegradable composite material, the biodegradable composite material is in the form of cylindrical particles, and contains main raw materials, the main raw materials include calcium carbonate particles, cellulose acetate particles, calcium oxide particles, talc particles and Quartz particles, the content of the calcium carbonate particles is greater than the content of the cellulose acetate particles, the calcium oxide particles, the talc particles and the quartz particles.

The main purpose of this creation of biodegradable composite materials is that the composite materials can be processed into articles of predetermined shape, the articles have the characteristics of self-degradation, can be decomposed in the natural environment after being discarded, and have the effects of environmental protection and antibacterial, and The raw materials used in the composite material are easy to obtain, so the difficulty and cost of manufacture are reduced, and the manufactured articles are easy to store and difficult to produce. Embrittlement and cracking.

1: Blender

2: Granulator

10: Combining materials

10A: Main raw material

10B: auxiliary raw materials

11: Calcium carbonate particles

12: Cellulose acetate particles

13: Calcium oxide particles

14: Talc powder particles

15: Quartz particles

16: Antioxidant Microparticles

17: Heat stabilizer particles

S110: the first step of adding raw materials

S120: the first stirring and drying steps

S130: The first granulation step

S140: the second step of adding raw materials

S150: the second stirring and drying step

S160: Second granulation step

The first picture is a schematic diagram of the composition materials of this creation.

The second picture is the block diagram of the material process of this creative composition.

The third picture is a schematic diagram 1 of the production process of this creative combination material.

The fourth picture is the second schematic diagram of the production process of this creative combination material.

Figure 5 is a schematic diagram 3 of the production process of this creative combination material.

Figure 6 is a schematic diagram 4 of the production process of this creative composition material.

The seventh figure is an enlarged view of part A of the sixth figure.

The following descriptions are further described below in conjunction with the drawings of the preferred embodiments of the present creation, so that those who are familiar with the related technologies of the present creation can implement it according to the statements in this specification.

First of all, please refer to the first figure to the seventh figure, the biodegradable composite material of the present creation, the biodegradable composite material 10 is in the shape of cylindrical particles, including: main raw material 10A and auxiliary raw material 10B, the main raw material 10A contains: 30~60% calcium carbonate particles 11, calcium carbonate particles 11 commonly known as limestone, limestone, stone powder, is a compound, chemical formula is CaCO3, alkaline, calcium carbonate particles 11 are abundant on the earth, and in many forms Exist in rocks, minerals and organisms, such as: aragonite, calcite, chalk, limestone, marble, travertine; 15~30% cellulose acetate particles 12, cellulose acetate particles 12 are also known as cellulose acetate, cellulose acetate cellulose acetate is the acetate ester of cellulose, and the cellulose acetate particles 12 are cellulose fractions. A chemically modified macromolecule compound obtained by esterifying the hydroxyl group in the daughter with acetic acid; 10~20% calcium oxide particles 13, calcium oxide particles 13 are an inorganic compound, the chemical formula is CaO, commonly known as quicklime, and the calcium oxide particles are 13 alkali It can be obtained by calcining oyster shells at 1300 degrees; 1~5% talc particles 14, talc particles 14 are magnesium silicate salt minerals talc talc, the main component is hydrous magnesium silicate, after crushing, Treated with hydrochloric acid, washed with water, and dried to increase toughness; and 1~2% quartz particles 15. Quartz particles 15 is a mineral resource with very stable physical and chemical properties. The crystal belongs to the oxide mineral of the trigonal system. , Quartz particle block also known as silica.

The auxiliary raw material 10B includes: antioxidant particles 16, antioxidant particles 16 refer to molecules that can slow down or prevent oxidation, usually reducing agents, such as mercaptans, ascorbic acid, polyphenols; heat stabilizer particles 17, heat stabilizer Microparticles 17 are used to improve the thermal stability of the polymer.

Furthermore, the auxiliary raw material 10B may further include natural degradin particles, so as to speed up the decomposition time of the biodegradable composite material 10 .

Its biodegradable composite material production process includes the following steps:

(a) The first raw material addition step S110 , adding the main raw material 10A into a mixer 1 .

(b) the first stirring and drying step S120, the main raw material 10A is stirred and dried by the mixer 1, and the stirring speed is 500 rpm to 700 rpm, and the drying temperature is 70 to 90 rpm. Spend.

(c) The first granulation step S130, the above-mentioned main raw material 10A after being stirred and dried is put into a granulator 2, and the first granulation is performed.

(d) The second raw material addition step S140, the granules obtained by the first granulation are added to a mixer 1 together with the auxiliary raw material 10B.

(e) the second stirring and drying step S150, using the mixer 1 to perform stirring and drying operations on the granulated material obtained by the first granulation and the auxiliary raw material 10B, and the stirring speed is 500rpm to 700rpm, and the drying The dry temperature is 70~90 degrees (if it is necessary to accelerate the decomposition of the biodegradable composite material 10, additional natural degradin particles can be added to speed up the decomposition time of the biodegradable composite material 10).

(f) the second granulation step S160, the granules and auxiliary raw materials 10B obtained from the first granulation after stirring and drying are placed in a granulator 2, and the second granulation is carried out, The granular material obtained by the second granulation is the finished product of the biodegradable composite material 10 .

By using the biodegradable composite material 10, an article with environmental protection and antibacterial effect can be injection-molded, and the article can be any article.

From the structure of the above-mentioned specific embodiment, the following benefits can be obtained:

The biodegradable composite material of this creation can be injection molded into any object of a predetermined shape. The object has the characteristics of self-degradation, can be decomposed in the natural environment after being discarded, and has the effects of environmental protection and antibacterial, and the composite material 10 is used in The raw materials are easy to obtain, the difficulty and cost of manufacture are reduced, the manufactured articles are easy to store, and embrittlement and cracking are not easy to occur.

10: Combining materials

10A: Main raw material

10B: auxiliary raw materials

11: Calcium carbonate particles

12: Cellulose acetate particles

13: Calcium oxide particles

14: Talc powder particles

15: Quartz particles

16: Antioxidant Microparticles

17: Heat stabilizer particles

Claims (5)

A biodegradable composite material, in the form of cylindrical particles, contains main raw materials, the main raw materials include calcium carbonate particles, cellulose acetate particles, calcium oxide particles, talc particles and quartz particles, and the content of the calcium carbonate particles is greater than The content of the cellulose acetate particles, the calcium oxide particles, the talc particles and the quartz particles. The biodegradable composite material according to claim 1, wherein the calcium carbonate particles account for 30-60%, the cellulose acetate particles account for 15-30%, and the calcium oxide particles account for 10-20%. The biodegradable composite material according to claim 1, wherein the talc particles account for 1-5%, and the quartz particles account for 1-2%. The biodegradable composite material according to claim 1 further comprises auxiliary raw materials, and the auxiliary raw materials include antioxidant particles and heat stabilizer particles. The biodegradable composite material according to claim 4, wherein the auxiliary material further comprises natural degradin particles.

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