Preparation process of corn straw material container

Abstract

The invention provides a corn straw material container preparation process, and relates to the technical field of corn straw material utilization, and the corn straw material container preparation process comprises the following process steps: step 1, raw material selection and pretreatment, step 2, crushing treatment, step 3, cleaning and disinfection, step 4, mixing and stirring, and step 5, molding processing. The method comprises the following steps: step 1, raw material selection and pretreatment: precise screening and low-temperature rapid drying; 2, crushing treatment comprises intelligent crushing and cyclone separation; step 3, cleaning and disinfection: ultrasonic-assisted cleaning and ultraviolet and ozone synergistic disinfection; 4, mixing and stirring, wherein the mixing and stirring process comprises auxiliary agent selecting and mixing processes; and 5, molding processing, wherein injection molding, infrared drying, plasma treatment and electrostatic spraying are included. The method has the advantages that the environment-friendly effect is good, the abandoned product can be naturally degraded, the sustainable development concept is met, the product has excellent performance in the aspects of strength, heat insulation, water resistance, wear resistance and the like after being processed, and the market requirements are met.

Description

Technical Field

[0001] The invention relates to the technical field of corn straw material utilization, and in particular to a process for preparing a corn straw material container. Background Art

[0002] As the global concept of environmental protection becomes more popular, the market demand for products made of degradable and renewable materials has exploded. Traditional container manufacturing mostly uses plastic, metal and other raw materials, which not only consumes a large amount of non-renewable resources, but is also extremely difficult to degrade after disposal, bringing a heavy burden to the ecological environment. Summary of the Invention

[0003] The purpose of the present invention is to solve the shortcomings of the prior art and propose a process for preparing a corn straw material container. The technical solution adopted by the present invention is:

[0004] A process for preparing a container made of corn straw material, comprising the following process steps: step 1, selecting and pre-treating raw materials, step 2, crushing, step 3, cleaning and disinfecting, step 4, mixing and stirring, and step 5, forming and processing;

[0005] Step 1: Raw material selection and pretreatment including precise screening and low-temperature rapid drying;

[0006] Step 2: crushing treatment includes intelligent crushing and cyclone separation;

[0007] Step 3: Cleaning and disinfection includes ultrasonic-assisted cleaning and UV-ozone synergistic disinfection;

[0008] Step 4: Mixing and stirring includes the selection of additives and the mixing process;

[0009] Step 5: Molding process includes injection molding, infrared drying, plasma treatment and electrostatic spraying.

[0010] As an improvement, the specific steps of step 1, raw material selection and pretreatment are as follows:

[0011] Accurate screening: Corn straw is strictly screened using professional testing equipment, such as a highly sensitive atomic absorption spectrometer to detect heavy metal content and a high-precision gas chromatography-mass spectrometer to detect pesticide residues.

[0012] Low-temperature rapid drying: The screened corn stalks are immediately sent to the low-temperature rapid drying equipment. The equipment adopts the principle of vacuum freeze drying. In a low-temperature environment, the water is rapidly sublimated by vacuuming, and the moisture content of the stalks can be reduced to 8% to 10% in a short time.

[0013] As an improvement, the specific steps of the step 2, crushing treatment are:

[0014] Intelligent crushing equipment: Introduce a new type of intelligent crushing equipment, which is equipped with an advanced automatic control system. It can accurately adjust parameters such as blade speed and feeding speed according to preset particle size requirements.

[0015] Cyclone separation device: During the crushing process, the cyclone separation device operates synchronously.

[0016] As an improvement, the specific steps of step three, cleaning and disinfection are as follows:

[0017] Ultrasonic-assisted cleaning: Place the crushed corn straw particles in a cleaning tank containing a bio-enzyme cleaning agent.

[0018] Ultraviolet and ozone synergistic disinfection: The cleaned straw particles enter a closed disinfection chamber. First, turn on the ultraviolet lamp for irradiation. Ultraviolet rays can damage the DNA structure of microorganisms and inhibit their reproduction. Then, introduce ozone. Ozone has strong oxidizing properties and can further kill bacteria, viruses, and microorganisms.

[0019] As an improvement, the specific steps of step four, mixing and stirring are as follows:

[0020] Auxiliary agent selection: Auxiliary agents such as new composite plasticizers, high-efficiency heat stabilizers, natural plant-derived preservatives, and hyperbranched polymer leveling agents can be selected.

[0021] Mixing process: Mixing is carried out in a mixing equipment with planetary stirring and vacuum defoaming functions.

[0022] As an improvement, the specific steps of step five, molding and processing are as follows:

[0023] Injection molding: Use microcellular injection molding technology. In a high-pressure injection equipment, inject the uniformly mixed raw material slurry into a mold with a special microporous structure.

[0024] Infrared drying: Adopt segmented infrared drying technology. First, dry at a low temperature stage. This stage mainly removes most of the free water in the material to avoid deformation of the container blank due to too high temperature.

[0025] Plasma treatment: Use plasma treatment technology to pre-treat the surface of the container. The high-energy particles in the plasma impact the surface of the container, introduce active groups, improve the surface activity, and enhance the adhesion of the subsequent coating.

[0026] Electrostatic spraying: Subsequently, use electrostatic spraying technology to uniformly spray an environmentally friendly nano-silica-based waterproof coating.

[0027] The beneficial effects of the present invention are:

[0028] The invention discloses a process for preparing a container made of corn straw material, which has good environmental protection effects. The discarded product can be naturally degraded, which conforms to the concept of sustainable development. After processing, the product has excellent performance in terms of strength, heat insulation, water resistance and wear resistance, and meets market demand. DETAILED DESCRIPTION

[0029] In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention.

[0030] Step 1: Raw material selection and pretreatment:

[0031] Precise screening: We use professional testing equipment, such as highly sensitive atomic absorption spectrometers to detect heavy metal content and high-precision gas chromatography-mass spectrometry to detect pesticide residues, to strictly screen corn straw. EU standards have detailed regulations on the soil, water sources, and air quality in the corn straw growth environment, ensuring that the selected straw is free of any pollution and guaranteeing product quality from the source.

[0032] Low-temperature rapid drying: The screened corn stalks are immediately sent to the low-temperature rapid drying equipment. The equipment adopts the principle of vacuum freeze drying. Under low-temperature conditions, the water is rapidly sublimated by vacuuming, and the moisture content of the stalks can be reduced to 8% to 10% in a short period of time. This drying method can effectively avoid the damage to the fiber structure of the straw caused by high temperature, retain its strength and toughness to the greatest extent, and lay a solid foundation for subsequent processing.

[0033] Step 2: Crushing process:

[0034] Intelligent crushing equipment: A new type of intelligent crushing equipment is introduced. This equipment is equipped with an advanced automatic control system that can accurately adjust parameters such as blade speed and feed rate according to preset particle size requirements. For example, the particle size distribution of the material in the crushing chamber is monitored in real time through sensors and fed back to the control system, automatically adjusting relevant parameters to crush the corn straw to the required particle size.

[0035] Cyclone separation device: During the crushing process, the cyclone separation device operates synchronously. Its working principle is to use centrifugal force to throw larger particles that do not meet the particle size requirements to the separator wall. After falling along the wall, the larger particles re-enter the crushing chamber, while the particles that meet the particle size requirements are discharged from the center of the separator, ensuring that the particle size of the final crushed product is highly uniform, thereby improving the stability of subsequent processing and product quality.

[0036] Step 3: Cleaning and disinfection:

[0037] Ultrasonic-assisted cleaning: Place the crushed corn straw particles in a cleaning tank containing a bio-enzyme cleaning agent. The bio-enzyme cleaning agent contains various targeted enzymes. For example, amylase can decompose starch impurities, and protease can remove protein-based dirt. The cavitation effect of ultrasonic waves will generate a large number of tiny bubbles in the liquid. The powerful impact force generated by the instantaneous rupture of the bubbles can assist the bio-enzyme to more efficiently decompose and remove the impurities on the surface of the straw particles. The cleaning effect is significantly better than the traditional cleaning method.

[0038] Ultraviolet and ozone synergistic disinfection: After cleaning, the straw particles enter a closed disinfection chamber. First, turn on the ultraviolet lamp for irradiation. Ultraviolet rays can damage the DNA structure of microorganisms and inhibit their reproduction. Subsequently, introduce ozone. Ozone has strong oxidizing properties and can further kill bacteria, viruses, and microorganisms, achieving efficient and green disinfection and meeting the strict hygiene standards of the EU for food-contact products.

[0039] Step Four: Mixing and Stirring

[0040] Selection of additives: Additives such as new composite plasticizers, high-efficiency heat stabilizers, natural plant-derived preservatives, and hyperbranched polymer leveling agents can be selected.

[0041] Mixing process: Mixing is carried out in a mixing device with planetary stirring and vacuum defoaming functions. The planetary stirring device can make the materials move simultaneously in multiple directions, resulting in more uniform mixing.

[0042] Step Five: Forming and Processing

[0043] Microcellular injection molding: Using microcellular injection molding technology, in a high-pressure injection device, inject the uniformly mixed raw material slurry into a mold with a special microporous structure, and at the same time inject nitrogen as a foaming agent. In the mold, nitrogen dissolves in the raw material slurry under high temperature and pressure. When the pressure suddenly drops, nitrogen rapidly escapes to form uniformly distributed tiny pores. These tiny pores can reduce the weight of the container and at the same time improve its heat insulation performance, making the product more competitive in the market.

[0044] Segmented infrared drying: Adopt segmented infrared drying technology. First, dry at a low temperature stage. This stage mainly removes most of the free water in the material to avoid deformation of the container blank due to excessive temperature. Then raise the temperature to the high temperature stage for drying to fully cure the container blank and further improve the strength and stability of the product.

[0045] Plasma treatment: Use plasma treatment technology to pre-treat the surface of the container. The high-energy particles in the plasma impact the surface of the container, introducing active groups, improving the surface activity, and enhancing the adhesion of the subsequent coating.

[0046] Electrostatic spraying: Electrostatic spraying technology is then used to evenly spray an environmentally friendly nano-silica-based waterproof coating. Electrostatic spraying uses the principle that like charges repel and opposite charges attract, making the paint particles negatively charged. Under the action of the electric field force, the coating is evenly adsorbed on the container surface. After curing, the coating forms a micro-nanostructure surface with a lotus leaf effect. Water droplets roll on its surface in a spherical shape and are not easy to adhere, which significantly improves the container's waterproof performance and surface wear resistance.

[0047] New composite plasticizers: These are made from a combination of bio-based plasticizers and nano-modified plasticizers. Bio-based plasticizers are derived from renewable biomass resources and offer excellent environmental performance. Nano-modified plasticizers utilize nanotechnology to modify traditional plasticizers, significantly enhancing their plasticizing effect and stability.

[0048] High-efficiency thermal stabilizer: an organic metal complex based on rare earth elements. The unique electronic structure of rare earth elements enables them to effectively capture free radicals, inhibit thermal degradation reactions, and improve the thermal stability of products during processing and use.

[0049] Natural plant-based preservatives: compounded from plant extracts such as rosemary and tea polyphenols. These plant extracts are rich in antioxidant and antibacterial ingredients, which can effectively prevent the product from deteriorating during storage and use.

[0050] Hyperbranched polymer leveling agent: It has a highly branched molecular structure and can diffuse rapidly in the material, reducing surface tension and making the mixed material have better fluidity and leveling during processing.

[0051] It has good environmental protection effects. The discarded products can be naturally degraded, which is in line with the concept of sustainable development. After processing, the products have excellent performance in strength, thermal insulation, waterproofness and wear resistance, meeting market demand.

[0052] Significant environmental advantages: Using corn straw, an agricultural waste product, as its primary raw material allows for efficient resource recycling and significantly reduces reliance on traditional, non-renewable materials. The additives used throughout the entire production process are all environmentally friendly, and the cleaning and disinfection techniques employed during production utilize environmentally friendly methods. The product is naturally biodegradable upon disposal, in line with the concept of sustainable development.

[0053] Excellent product performance: Through a series of optimized processes, such as adding nanocellulose whiskers to build an enhanced network structure, micro-foam injection molding to improve thermal insulation performance, and surface treatment to enhance waterproof and wear resistance, the prepared containers have excellent performance in strength, thermal insulation, waterproofness and wear resistance, which can better meet the market demand for high-quality containers.

[0054] Outstanding innovation: Innovative technologies and methods are adopted in all aspects such as raw material selection, pretreatment, pulverization, cleaning and disinfection, mixing and stirring, forming and processing, and surface treatment, which are significantly different from traditional preparation processes and have high innovation and technological advancement.

[0055] The above are only the preferred embodiments of this invention patent and are not intended to limit this invention patent. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this invention patent shall be included within the protection scope of this invention patent.

Claims

1. A preparation process for a corn straw material container, characterized in that, The process includes the following steps: step 1, raw material selection and pretreatment, step 2, crushing, step 3, cleaning and disinfection, step 4, mixing and stirring, and step 5, molding; Step 1: Raw material selection and pretreatment including precise screening and low-temperature rapid drying; Step 2: crushing treatment includes intelligent crushing and cyclone separation; Step 3: Cleaning and disinfection includes ultrasonic-assisted cleaning and UV-ozone synergistic disinfection; Step 4: Mixing and stirring includes the selection of additives and the mixing process; Step 5: Molding process includes injection molding, infrared drying, plasma treatment and electrostatic spraying.

2. The preparation process of a corn straw material container according to claim 1, characterized in that, The specific steps of step 1, raw material selection and pretreatment are: Precise screening: Corn straw is strictly screened using professional testing equipment, such as a highly sensitive atomic absorption spectrometer to detect heavy metal content and a high-precision gas chromatography-mass spectrometer to detect pesticide residues. Low-temperature rapid drying: The screened corn stalks are immediately sent to the low-temperature rapid drying equipment. The equipment adopts the principle of vacuum freeze drying. In a low-temperature environment, the water is rapidly sublimated by vacuuming, and the moisture content of the stalks can be reduced to 8% to 10% in a short time.

3. The preparation process of a corn straw material container according to claim 1, characterized in that, The specific steps of the step 2, crushing treatment are: Intelligent crushing equipment: Introducing a new type of intelligent crushing equipment, which is equipped with an advanced automatic control system that can accurately adjust parameters such as blade speed and feed speed according to preset particle size requirements. Cyclone separation device: During the crushing process, the cyclone separation device runs synchronously.

4. The preparation process of a corn straw material container according to claim 1, characterized in that, The specific steps of step 3, cleaning and disinfection are: Ultrasonic-assisted cleaning: The crushed corn stalk particles are placed in a cleaning tank containing a bio-enzyme cleaning agent. Collaborative disinfection of ultraviolet light and ozone: The cleaned straw particles enter a closed disinfection chamber, where ultraviolet light is first turned on to irradiate them. Ultraviolet light can destroy the DNA structure of microorganisms and inhibit their reproduction. Ozone is then introduced, which has strong oxidizing properties and can further kill bacteria, viruses and microorganisms.

5. A preparation process of a corn straw material container according to claim 1, characterized in that The specific steps of step 4, mixing and stirring are: Additive selection: You can choose new composite plasticizers, high-efficiency thermal stabilizers, natural plant-based preservatives, hyperbranched polymer leveling agents and other additives. Mixing process: Mixing is carried out in a mixing equipment with planetary stirring and vacuum degassing functions.

6. The preparation process of a corn straw material container according to claim 1, characterized in that, The specific steps of step 5, the forming process are: Injection molding: Using micro-foaming injection molding technology, the mixed raw material slurry is injected into a mold with a special microporous structure in a high-pressure injection device. Infrared drying: Using segmented infrared drying technology, drying is first carried out in the low temperature section. This stage mainly removes most of the free water in the material to avoid deformation of the container body due to excessive temperature. Plasma treatment: Plasma treatment technology is used to pre-treat the container surface. The high-energy particles in the plasma impact the container surface, introducing active groups, increasing surface activity, and enhancing the adhesion of subsequent coatings. Electrostatic spraying: Electrostatic spraying technology is then used to evenly spray the environmentally friendly nano-silica-based waterproof coating.