WO2014067156A1

WO2014067156A1 - Environmentally friendly board obtained by recycling straw

Info

Publication number: WO2014067156A1
Application number: PCT/CN2012/084066
Authority: WO
Inventors: 马铭远
Original assignee: Ma Mingyuan
Priority date: 2012-11-05
Filing date: 2012-11-05
Publication date: 2014-05-08
Also published as: CN104797650A

Abstract

An environmentally friendly board obtained by recycling straw, said board comprising 5-95 parts by weight of recovered resins, 5-95 parts by weight of straw fibres obtained by the processing steps of degreasing, desaccharification and removing oxalic acid, 3-20 parts by weight of fillers, 1-3 parts by weight of a foaming agent, and 5-15 parts by weight of environmentally friendly auxiliaries including a coupling reagent, a lubricant, a flame retardant, an anti-oxidant, an anti-aging agent, a stabilizer, a temperature-resistant agent, an anti-bacterial agent or combinations thereof.

Description

Straw recycling environmental protection sheet technical field

The invention relates to an environmentally-friendly regenerated product, in particular to a sheet obtained from straw, in particular to a sheet produced by extrusion polymerization of a non-toxic resin and a regenerated straw fiber. Background technique

In recent years, crop straw has become a new source of rural pollution. During the summer harvest and autumn and winter, there are always a large amount of straw such as wheat and corn burned in the field, which produces a lot of heavy smoke, which has become a bottleneck in rural environmental protection and even the chief culprit in the urban environment. According to relevant statistics, China, as a large agricultural country, can generate more than 700 million tons of straw per year, becoming a "waste" that must be disposed of "not very useful". Under this circumstance, a large number of incinerations occurred in the case of farmers.

At present, the comprehensive utilization of straw mainly has the following aspects:

First, the straw returned to the field. Difficulties: (1) Straw returning needs to be chopped and deep ploughed, and the existing agricultural machinery is difficult to fully realize. (2) In some areas, if the total amount of straw returned to the field in the summer and autumn for several consecutive years has a greater impact on the growth of later crops.

Second, the comprehensive utilization of straw. At present, there are many ways to comprehensively use straw, such as straw cultivation of edible fungi, straw biogas, straw feed, etc., but the problem is that the amount of straw used in these aspects is very small.

Third, energy use. That is, after collecting the straw, it is treated as a fuel. The difficulty lies in: (1) The fuel produced has a low calorific value and can only be used for small boilers. The application surface is narrow and the dosage is small. (2) The fuel produced will still cause damage to the environment during the combustion process. (3) Summer straw collection time is short, and it is difficult to collect and process it in a unified manner. (4) The integration is high, and the enterprise lacks benefits. (5) The sales price is not high. (6) The investment is large, and the existing processing equipment on the market is still not closed.

In summary, the current problems in straw utilization are: Straw returning affects the growth of subsequent crops, the calorific value of straw burning is low and polluting the atmospheric environment, and the comprehensive development and utilization faces the dilemma of immature technology, relatively large investment, and relatively poor effect. .

On the other hand, solid wood is still widely used in the fields of construction, decoration, furniture, flooring, etc., which not only consumes a lot of forest resources, destroys the ecological balance, but also increases the cost of the corresponding products due to the decline in the supply of wood.

In the previous stage of comprehensive utilization of straw, the idea of applying straw to sheet metal was put forward. However, due to the limitations of technology and processing technology at that time, the performance of straw prepared from sheet metal could not meet the relevant requirements. In summary, there is an urgent need in the art to develop an environmentally friendly alternative that can solve the problem of safe use of straw while reducing the amount of wood used. Summary of the invention

SUMMARY OF THE INVENTION A first object of the present invention is to provide an environmentally friendly alternative that can solve the problem of safe use of straw while reducing the amount of wood used.

A second object of the present invention is to provide a method for solving the problem of safe utilization of straw and at the same time reducing the amount of wood used in environmentally friendly alternative products.

A third object of the present invention is to provide an application of the sheet of the present invention in various aspects.

A fourth object of the present invention is to provide a new use of straw to solve the problem of safe utilization of straw. A first aspect of the invention provides a straw recycling environmental protection panel, the panel comprising:

Recycled resin 5 to 95 parts by weight,

The straw fiber is 5 to 95 parts by weight, and the straw fiber is a straw fiber processed by a step including degreasing, de-sugaring, and oxalic acid treatment;

Filling material 3~20 parts by weight;

Foaming agent 1~3 parts by weight;

The environmentally-friendly auxiliary agent is 5 to 15 parts by weight, and the auxiliary agent includes a coupling agent, a lubricant, a flame retardant, an antioxidant, an aging agent, a stabilizer, a temperature resistance agent, an antibacterial agent, or a combination thereof. In one embodiment, the moisture content of the straw fiber is controlled to be equal to or less than 0.5%, and the particle diameter of the straw fiber is 20 to 1500 mesh, and the degreasing is completed by using the corresponding auxiliary agent and the targeted processing technology. That is, the oil of the straw outer skin), the removal of sugar and the oxalic acid component, so that the components of the original straw which are unfavorable for processing and forming are decomposed, so that it can be better melted with the resin and other auxiliaries in the subsequent processing; The stalks of the stalks of the stalks of the stalks of the stalks of the stalks of the stalks of the stalks of the stalks of the stalks of the stalks of the stalks. The total weight of the straw-like fibers.

In a specific embodiment, the straw fiber comprises: straw fiber made of plant straw such as rice straw, cotton, soybean, corn, sorghum, sesame, and the like. In a specific embodiment of the invention, the filler is selected from one or both of calcium phosphate and talc. In a specific embodiment of the invention, the blowing agent is azodicarbonamide. In a specific embodiment of the invention, the board is prepared by the following steps:

(a) providing a component of the invention;

(b) the components are added to the high-mixer in batches and over time for thorough mixing and pre-heat treatment of the components;

(c) mixing the components after entering the extrusion apparatus, which feed inlet temperature was controlled at 100 ^{^fl} C~150 ^fl C, the temperature of the central screw extruder controlled at 120 ° C~180 ° C, the temperature of the extruder segment Controlled at 140 ° C ~ 230 ° C, the mold temperature is controlled at 160 ⁰ (~ 250 ⁰ C. In a specific embodiment, the following steps are included:

1. First, the straw is dried and finely powdered, and the water content is controlled to be equal to or less than 0.5%, and the particle diameter of the straw fiber is 20 to 1500 mesh, and then the corresponding auxiliary agent is added to the pulverized straw fiber. The machine is mixed and heated to pre-treat, so that the oil contained in the straw fiber (ie, the oil of the straw outer skin), the sugar and the oxalic acid component are liquefied, and then separated and dried by a centrifuge and a gas dryer to complete the degreasing, sugar removal and oxalic acid components. The treatment comprises disintegrating and dissociating the components contained in the original straw which are unfavorable for subsequent processing, so that it can be better melted with the resin and other auxiliary agents in the subsequent processing;

2. The resin, straw fiber, filler, foaming agent and auxiliary agent according to the actual product distribution ratio are fully and uniformly mixed by a high-speed mixer;

3. The mixed powder is polymerized by twin-screw extruder. During the extrusion polymerization process, the temperature control of each stage is according to different requirements of raw materials: The temperature of the inlet is controlled at 100 °C~150 °C, and the screw is squeezed in the middle. The temperature is controlled at 120 ° (~ 180 ° C, the extrusion section temperature is controlled at 140 ° (~ 230 ° C, the mold temperature is controlled at 160 ° (~ 250 ° C;

4. After extrusion, the semi-solid polymer enters the vacuum shaping box through the pressing and pulling action of the extruder and the traction machine to cool and shape;

5. The shaped plate is cut into a finished product by a cutting cutter according to the set length. In a second aspect of the invention, a method for preparing a straw regeneration environmental protection sheet according to the present invention comprises the following steps:

(a) providing a component of the invention;

(c) mixing the components after entering the extrusion apparatus, which feed inlet temperature was controlled at 100 ^{^fl} C~150 ^fl C, the temperature of the central screw extruder controlled at 120 ° C~180 ° C, the temperature of the extruder segment control 140 ° C~230 ° C, mold temperature was controlled at 160 ^{^fl} C~250 ^fl C, to give the extruded sheet. In a specific embodiment, the method includes the following steps:

1. First, the straw is dried and finely powdered, and the moisture content is controlled to be equal to or less than 0.5%, and the particle diameter of the straw fiber is 20 to 1500 mesh, and the degreasing (ie, straw) is completed by using the corresponding auxiliary agent and special processing technology. The treatment of the oil and the oxalic acid component of the outer skin, so that the components of the original straw which are unfavorable for processing and forming are decomposed, so that it can be better melted with the resin and other auxiliaries in the subsequent processing;

5. The shaped plate is cut into a finished product by a cutting cutter according to the set length. In a specific embodiment of the present invention, the extruded sheet of the step (c) is a semi-solid sheet, which is pressed and pulled by the extruder and the tractor to enter the vacuum shaping box for cooling and shaping. . In a specific embodiment of the present invention, the shaped plate material is cut by a pulling cutter to a predetermined length to form a finished product. A third aspect of the invention provides the use of the panel of the invention in terms of decoration, construction, furniture, or flooring. A fourth aspect of the invention provides a use of straw for use in the straw-recycled environmentally friendly sheet of the invention. BEST MODE FOR CARRYING OUT THE INVENTION

In order to solve the problem of the current use of straw, the inventors have provided an environmentally-friendly sheet which is processed by using straw as a main raw material, and its performance can completely replace the existing sheet processed by solid wood.

The present invention has been completed on this basis.

The technical idea of the present invention is to:

Plant stalks are used as the main raw materials to produce various types of plates that can replace solid wood, such as ordinary wood board, all kinds of wall decoration panels, ceiling panels, etc., for furniture production, interior and exterior decoration, building templates and so on. Furthermore, by adjusting the process, a straw recycling environmentally friendly floor is produced. The technical difficulties solved by the invention are as follows:

(1) Increasing straw utilization rate and usage: The present invention treats straw more thoroughly, and does not generate waste gas, waste water, residue, etc. during the processing of raw materials and finished products, and the waste material can be directly recycled and reused.

(2) Solving the problem of efficient collection and safe storage of straw: The inventor solved the problem of aging and storage of straw in the field, and used the processing method of line to complete the clean treatment of straw de-sanding, weighing by quantity, snoring in batches, etc. Work to ensure that the straw stored is clean and not easily damp, easy to store for a long time, and can be used as needed.

(3) Make the adaptive processing of straw and eliminate the factors affecting the subsequent production: adding the corresponding auxiliary agent to the smashed straw fiber and pre-treating it with high-mixing machine to make the oil contained in the straw fiber (ie straw) The oil of the outer skin), the sugar and the oxalic acid component are liquefied, and then separated and dried by a centrifuge and a gas dryer to make the components (moisture, oil, sugar, oxalic acid, etc.) contained in the original straw which are not suitable for subsequent production. Decomposition and disengagement have solved various types of inapplicable problems that occurred in the comprehensive utilization of straw before, making it a usable and useful renewable raw material.

(4) Adjusting the material properties, polymer forming: It overcomes the technical difficulties that the straw fiber is compatible with the resin, the filler and the auxiliary agent, and does not affect each other, so that the above raw materials form a polymer under certain conditions, which is convenient for shaping processing. In the present invention, the term "contains" or "includes" means that the various ingredients can be used together in the mixture or composition of the present invention. Therefore, the terms "consisting essentially of . . . and consisting of " . . . are included in the terms "containing" or "including". Various aspects of the invention are detailed below:

Straw regeneration environmental protection sheet and method thereof

A first aspect of the invention provides a straw recycling environmental protection panel, the panel comprising:

Recycled resin 5 to 95 parts by weight,

Filling material 3~20 parts by weight;

Foaming agent 1~3 parts by weight;

The environmentally-friendly auxiliary agent is 5 to 15 parts by weight, and the auxiliary agent includes a coupling agent, a lubricant, a flame retardant, an antioxidant, an aging agent, a stabilizer, a temperature resistance agent, an antibacterial agent, or a combination thereof. The inventors have found that the performance of the straw-recycled environmentally-friendly sheet of the present invention is achieved by special treatment of the straw and adjustment of the relevant auxiliary agent to make the resin compatible with it, and then through subsequent extrusion molding, cooling and shaping processes. In the quality standards of the relevant national plates, it can replace the wood board and other panels, used in decoration, construction, furniture, flooring and many other aspects.

In one embodiment, the moisture content of the straw fiber is controlled to be equal to or less than 0.5%, and the particle diameter of the straw fiber is 20 to 1500 mesh, and the degreasing is completed by using the corresponding auxiliary agent and the targeted processing technology. That is, the oil of the straw outer skin), the removal of sugar and the oxalic acid component, so that the components of the raw straw which are unfavorable for processing and forming are decomposed, so that they can be better melted with the resin and other auxiliaries in the subsequent processing; In the invention, "recycled resin" refers to various types of recycled resins treated by an environmentally friendly process.

The straw fiber refers to a fiber processed by straws or other crop straws such as cotton; the processing includes degreasing (i.e., oil of straw skin), and removal of sugar and oxalic acid components. The 5%, in the case of the stalks, the stalks of the fibers having a particle size of 20 to 1500 mesh or one or two of the filamentous fibers, the water content of which is equal to or less than 0.5%, The total weight of the straw-like straw fiber.

In a specific embodiment, the straw fiber comprises: straw fiber made of plant straw such as rice straw, cotton, soybean, corn, sorghum, sesame, and the like. In a specific embodiment of the invention, the filler is selected from one or both of calcium phosphate and talc. In a specific embodiment of the invention, the blowing agent is azodicarbonamide. The inventors have found that the use of a specific blowing agent can further improve the performance of the straw-recycled and environmentally-friendly sheet. In a specific embodiment of the invention, the board is prepared by the following steps:

(a) providing a component of the invention;

(c) mixing the components after entering the extrusion apparatus, which feed inlet temperature was controlled at 100 ^{^fl} C~150 ^fl C, the temperature of the central screw extruder controlled at 120 ° C~180 ° C, the temperature of the extruder segment Controlled at 140 ° C ~ 230 ° C, the mold temperature is controlled at 160 ⁰ (~ 250 ⁰ C.

The inventors have found that the specific extrusion molding, cooling setting and the like process make the performance of the straw-recycled environmentally-friendly sheet of the present invention meet or exceed the quality standards of the relevant national board. In a specific embodiment, the method includes the following steps:

4. After extrusion, the semi-solid polymer enters the vacuum shaping box through the pressing and pulling action of the extruder and the traction machine to be cooled and shaped; 5. The shaped plate is cut into a finished product by a cutting cutter according to the set length. In a second aspect of the invention, a method for preparing a straw regeneration environmental protection sheet according to the present invention comprises the following steps:

(a) providing a component of the invention;

5. The shaped plate is cut into a finished product by a cutting cutter according to the set length. In a specific embodiment of the present invention, the extruded sheet of the step (c) is a semi-solid sheet, which is pressed and pulled by the extruder and the tractor to enter the vacuum shaping box for cooling and shaping. . In a specific embodiment of the present invention, the shaped plate material is cut by a pulling cutter to a predetermined length to form a finished product. Preferred embodiment

The specific technical solutions adopted by the present invention to solve the technical problems thereof are:

(1) The straw material, the main raw materials include: resin, straw fiber, filler, foaming agent and self-developed special additives. Specifically: the resin is various types of recycled resin treated by an environmentally friendly process; the straw fiber comprises straw fiber made of plant straw such as rice straw, soybean, corn, sorghum, sesame, etc., the straw fiber has a particle size of 20〜1500目, moisture content is equal to or less than 0.5%; the filler is one or two of calcium phosphate and talc; the foaming agent is a non-toxic chemical foaming agent commonly used in the market. The auxiliaries are some or all of the coupling agent, the lubricant, the flame retardant, the antioxidant, the anti-aging agent, the stabilizer, the temperature and the antibacterial agent, and other auxiliaries. Auxiliaries formulated in specific proportions.

(2) The composition weight ratio of the straw board is: resin: 5~95%, straw fiber: 5~95%, filler: 3~20%, foaming agent: 1~3%, auxiliary: 5 ~15%.

(3) The production process and process of the straw board are:

③, the powder after mixing the polymeric molding a twin screw extruder, extruded during the polymerization temperature levels in accordance with the control requirements of the different materials: the feed inlet temperature was controlled at 100 ^{^fl} C~150 ^fl C, the central screw extruder The temperature is controlled at 120 ° (~ 180 ° C, the extrusion section temperature is controlled at 140 ° (~ 230 ° C, the mold temperature is controlled at 160 ° (~ 250 ° C;

5. The shaped plate is cut into a finished product by a cutting cutter according to the set length. The straw straw board made by the invention has the following characteristics:

1. Straw imitation wood, saving wood, retaining green, and maintaining ecology;

2, one molding, simple process, stable quality, high yield; 3, production links, non-toxic and harmless, reworked, no pollution;

4. The equipment is streamlined, resources are saved, efficiency is improved, and the market is infinite;

5. Adjusting the proportion of raw materials to produce plates of various specific gravity, which can meet the needs of different products;

6. The shape of the finished product can be customized according to requirements, and it is suitable for different production lines. More specifically, the straw-recycled environmentally-friendly sheet invented by the present inventors has the following advantages as compared with conventional solid wood sheets:

(1) Comprehensively eliminate the dependence of wood, protect forest resources, and maintain ecological balance. At the same time, a large number of straw disposal problems are solved, and the utilization rate of straw is high, and secondary pollution is not generated;

(2) The straw-recycled environmental protection sheet is processed by a single forming process. After adjusting the mold, raw material ratio and production process, different types and types of sheets can be produced, which reduces the subsequent processing of many solid wood sheets. Link, greatly shorten the production process, reduce production costs, and improve production efficiency;

(3) This straw-recycled environmentally-friendly sheet does not produce waste water or waste gas from the initial processing of raw materials to the production of finished products. It does not need to add adhesives like wood and wood, and contains formaldehyde and benzene. Ingredients harmful to the human body, in addition, the scraps produced in the production process of the environmentally-friendly sheet and the sheets recovered after use can be crushed and reused, and the actual production and use will not cause damage to the environment. Unless otherwise specified, the various starting materials of the present invention are commercially available; or prepared according to conventional methods in the art. Unless otherwise defined or indicated, all of the professional and scientific terms used herein have the same meaning as those skilled in the art. In addition, any methods and materials similar or equivalent to those described can be used in the methods of the present invention. Other aspects of the invention will be apparent to those skilled in the art from this disclosure. The invention is further illustrated below in conjunction with specific embodiments. It is to be understood that the examples are only intended to illustrate the invention and not to limit the scope of the invention. The experimental methods in the following examples, which do not specify the specific conditions, are usually determined in accordance with national standards. If there is no corresponding national standard, follow the general international standards, general conditions, or in accordance with the conditions recommended by the manufacturer. Unless otherwise stated, all parts are parts by weight, all percentages are by weight, and the molecular weight of the polymer is number average molecular weight.

Unless otherwise defined or stated, all professional and scientific terms used herein are familiar to those skilled in the art. The familiarity of the practitioners is the same. Furthermore, any methods and materials similar or equivalent to those described may be employed in the methods of the invention. Example 1

Straw recycling environmental protection building template:

In this case, the distribution ratio of each raw material composition is: resin 58%, straw fiber 20%, filler 5%, foaming agent 2%, various types of mixing additives 15%.

Production process and process: Firstly, the straw fiber is dried and finely powdered to control the water content to be equal to or less than

0. 5%, and the particle size of the straw fiber is 50 mesh, and the treatment of degreasing, sugar removal and oxalic acid is completed; 2. The resin, straw fiber, filler, foaming agent and the ratio of the above-mentioned distribution ratio are The auxiliary agent is fully and uniformly mixed by the high-speed mixer; 3. The mixed powder is extruded and polymerized by a twin-screw extruder, and the temperature of each stage is controlled as follows: the inlet temperature is controlled at 120 ^fl C, the middle of the screw plasticizing temperature controlled at 150 ^fl C, the extrusion section temperature control at 170 ^fl C, mold temperature was controlled at 185 ^fl _C; 5, after semi-solid polymer in an extruder and extruded push tractor, under the action of pull Immediately enter the vacuum shaping box for cooling and setting; 6. The shaped plate is cut by the pulling and cutting machine according to the set length to make the finished product.

The above-mentioned raw material ratio and process produce sheet can replace the existing solid wood building formwork and be used for indoor and outdoor building processing. This straw recycling environmentally friendly building template not only saves a lot of wood, but its performance and quality have reached or exceeded. National relevant quality standards, which are superior to existing solid wood building templates in terms of surface flatness and hardness. In addition, for post-cut or damaged straw recycling, environmentally-friendly building templates can be used for surface cleaning and direct pulverization for processing of new boards. , there will be no waste. Example 2

Straw recycling environmental protection wood board:

In this case, the distribution ratio of each raw material composition is: resin 50%, straw fiber 26%, filler 8%, foaming agent

1. 6%, various types of mixing aids 14. 4%.

Production process and process: First, the straw fiber is dried, finely powdered, and the water content is controlled to be equal to or less than 0.5%, and the particle diameter of the straw fiber is 80 mesh, and the treatment of degreasing, sugar removal and oxalic acid is completed. 2. The resin, straw fiber, filler, foaming agent and auxiliary agent according to the above-mentioned distribution ratio are fully and uniformly mixed by a high-speed mixer; 3. The mixed powder is extruded and polymerized by a twin-screw extruder. The temperature control of each stage is as follows: the temperature of the inlet is controlled at 120 ^fl C, the plasticizing temperature of the middle of the screw is controlled at 140 ^fl C, and the temperature of the extrusion section is controlled at 160 ^fl C. Mold temperature was controlled at 180 ^fl _C; 5, after semi-solid polymer in an extruder and extruded push tractor, pull action immediately into the vacuum tank is cooled amorphous amorphous; 6, after shaping the sheet by the cutter tractor Cut into finished products according to the set length.

The above-mentioned raw material ratio and process produce plates can replace the existing solid wood board for interior decoration and furniture production. This straw recycling green wood board not only saves a lot of wood, but its performance and quality meet or exceed the relevant national quality standards. More importantly, it is easy to process, and the quality is stable. The defective rate is low, which can greatly improve the follow-up. Productivity. Example 3

Straw recycling environmental protection decorative panel:

In this case, the distribution ratio of each raw material composition is: resin 35%, straw fiber 38%, filler 8%, foaming agent 2. 5%, various mixing aids 16.5%.

Production process and process: First, the straw fiber is dried, finely powdered, and the moisture content is controlled to be equal to or less than 0.5%, and the particle diameter of the straw fiber is 200 mesh, and the treatment of degreasing, sugar removal and oxalic acid is completed. 2. The resin, straw fiber, filler, foaming agent and auxiliary agent according to the above-mentioned distribution ratio are fully and uniformly mixed by a high-speed mixer; 3. The mixed powder is extruded and polymerized by a twin-screw extruder. The temperature control of each stage is as follows: the temperature of the inlet is controlled at 130 ^fl C, the plasticizing temperature of the screw is controlled at 150 ^fl C, the temperature of the extrusion section is controlled at 175 ^fl C, and the temperature of the mold is controlled at 195 ^fl C _; After the extrusion, the semi-solid polymer enters the vacuum shaping box under the action of pushing and pulling of the extruder and the traction machine to cool and shape; 6. The shaped plate is cut by the pulling and cutting machine according to the set length. Finished product.

The above-mentioned raw material ratio and process produce plates can replace existing wallpapers, gussets and solid wood decorative panels, etc., for interior decoration and furniture production. The decorative panel can be processed into a hollow or other structure at the time of production through the adjustment of the mold structure, which can increase the hardness of the plate and reduce the material, thereby greatly reducing the cost. At the same time, through the design and processing of the mold, various types of panels or beadings can be produced at one time according to the customer's requirements, which reduces the subsequent processing links, improves efficiency and reduces costs. Example 4

Straw recycling environmental protection floor:

In this case, the distribution ratio of each raw material is: 68% resin, 13% straw fiber, 10% filler, 1% foaming agent, 8% of various mixing additives. Production process and process: Firstly, the straw fiber is dried and finely powdered to control the water content to be equal to or less than

0. 5%, and the straw fiber has a particle size of 120 mesh, and completes the treatment of degreasing, sugar removal and oxalic acid; 2. The resin, straw fiber, filler, foaming agent and the ratio of the above-mentioned distribution ratio are The additive is fully and uniformly mixed by a high-speed mixer; 3. The mixed powder is extruded and polymerized by a twin-screw extruder, and the temperature of each stage is controlled as follows: The temperature of the inlet is controlled at 110 ^fl C, the middle of the screw plasticizing temperature controlled at 130 ^fl C, at an extrusion temperature control section 150 ^fl C, mold temperature was controlled at 168 ^fl _C; 5, after semi-solid polymer in an extruder and extruded push tractor, under the action of pull Immediately enter the vacuum shaping box for cooling and setting; 6. The shaped plate is cut by the pulling and cutting machine according to the set length to make the finished product.

The above-mentioned raw material ratio and the plate produced by the process can be replaced by existing solid wood flooring by means of four-side slotting, UV roll coating or surface grinding, and can be used for interior decoration or floor mating in public places. This straw recycling environmentally friendly floor not only saves a lot of wood, but its performance and quality have reached or exceeded the relevant national quality standards. In addition, the straw recycling environmental protection floor does not contain glue, which can avoid harmful components such as formaldehyde and benzene to the human body. hurt. At the same time, the waterproof performance of the floor board is much better than that of the traditional solid wood floor. The long-term use will not be deformed by the damp, which can reduce the cost of repeated maintenance or replacement in the later period. Performance example

The straw recycling environmental protection sheets of Examples 1 to 4 have passed the safety, physical and chemical tests of relevant authorities, and the test data are as follows:

Continuous burning time S level 0 0

Mass loss rate % 50. 0 40. 5

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the technical content of the present invention. The technical content of the present invention is broadly defined in the application. In the scope of the claims, any technical entity or method that is completed by another person, if it is exactly the same as defined in the scope of the claims, or an equivalent change, is considered to be included in the scope of the claim. .

All documents mentioned in the present application are hereby incorporated by reference in their entirety in their entireties in the the the the the the the the the In addition, it should be understood that various modifications and changes may be made to the present invention, and the equivalents of the scope of the appended claims.

Claims

Rights request

A straw reclaimed environmentally-friendly sheet, characterized in that the sheet material comprises:

Recycled resin 5 to 95 parts by weight,

Filling material 3~20 parts by weight;

Foaming agent 1~3 parts by weight;

The environmentally-friendly auxiliary agent is 5 to 15 parts by weight, and the auxiliary agent includes a coupling agent, a lubricant, a flame retardant, an antioxidant, an aging agent, a stabilizer, a temperature resistance agent, an antibacterial agent, or a combination thereof.

The straw-recycled environmentally-friendly sheet material according to claim 1, wherein the straw fiber comprises one or two of powder particles having a particle diameter of 20 to 1500 mesh or filamentous fibers, and the water content thereof is equal to Or less than 0.5%, based on the total weight of the straw-based straw fiber.

The straw-recycled eco-friendly board according to claim 1, wherein the filler is selected from one or two of calcium phosphate and talc.

The straw-recycled eco-friendly board according to claim 1, wherein the foaming agent is azodicarbonamide.

The straw-recycled eco-friendly board according to claim 1, wherein the board is obtained by the following steps:

(a) providing the component of claim 1;

A method for preparing a straw-recycled environmentally-friendly sheet according to claim 1, comprising the steps of:

(a) providing the component of claim 1;

(c) mixing the components after entering the extrusion apparatus, which feed inlet temperature was controlled at 100 ^{^fl} C~150 ^fl C, the temperature of the central screw extruder controlled at 120 ° C~180 ° C, the temperature of the extruder segment control 140 ° C~230 ° C, mold temperature was controlled at 160 ^{^fl} C~250 ^fl C, to give the extruded sheet.

The method according to claim 6, wherein the extruded sheet of the step (c) is a semi-solid sheet, which is pressed into the vacuum by the shaping sleeve under the push and pull of the extruder and the tractor. The shape box is cooled and shaped.

8. The method according to claim 7, wherein the shaped sheet material is cut by a pulling cutter to a predetermined length to form a finished product.

9. Use of a panel according to claim 1 in decoration, construction, furniture, or flooring.

A use of straw for use in the straw-recycled environmentally-friendly sheet of claim 1 of the present invention.