High-strength light-weight fiberboard and production process

Abstract

The invention relates to the technical field of fiberboards, in particular to a high-strength light-weight fiberboard which comprises a fiberboard body. The composite material comprises the following components in parts by weight: 35-50 parts of cellulosic fibers, 15-20 parts of resin, 10-15 parts of an additive, 5-10 parts of filler, 2-6 parts of a resin reinforced coupling agent, 2-6 parts of a resin reinforced cross-linking agent, 2-6 parts of a resin reinforced flexibilizer, 2-6 parts of a resin reinforced catalyst and 2-6 parts of a resin reinforced viscosity modifier. The fiberboard replaces traditional leather, so that the fiberboard has better air permeability, meanwhile, compared with sponge, the fiberboard has enough anti-treading strength, the overall weight of a shoe can be remarkably reduced when the fiberboard is used as a shoe lining, the wearing comfort is improved, the fiberboard is light in weight, but the fiberboard has good supporting performance and structural stability, enough supporting and protection can be provided, and the service life of the shoe lining is prolonged. Shoe liners made of fiberboards generally have a certain porosity.

Description

Technical Field

[0001] The present invention relates to the technical field of fiberboards, and in particular to a high-strength and lightweight fiberboard and a production process. Background Art

[0002] The bottom padding inside the shoe mainly plays a role in buffering and relieving pressure when walking, and combined with the basic insole, it has a double pressure-relieving effect.

[0003] This type of bottom pad is mostly made of sponge or leather, but of these two materials, sponge has a lower compressive strength and is prone to not being able to rebound when stepped on for a long time. Leather is also limited by its own material, has a heavy texture and poor breathability.

[0004] Fiberboard, also known as density board, is a man-made board mainly made of wood fiber or other plant fiber.

[0005] Fibers can be produced through the papermaking process. Fiberboard made by the papermaking process can produce paper with different properties, such as strength, air permeability, water absorption, etc., by adjusting the pulp formula and papermaking process to meet various application needs. Paper has good recyclability. Through the recycling of waste paper, resource consumption and environmental pollution can be reduced to achieve sustainable development.

[0006] Therefore, it is necessary to combine the fiberboard structure to design a lining structure for use in shoes, so that it has the characteristics of high strength, lightweight and breathable. Summary of the invention

[0007] The purpose of the present invention is to solve the above-mentioned shortcomings in the prior art and to propose a high-strength lightweight fiberboard and a production process.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A high-strength and lightweight fiberboard is designed, comprising a fiberboard, by weight: 35-50 parts of cellulose fiber, 15-20 parts of resin, 10-15 parts of additives, 5-10 parts of fillers, 2-6 parts of resin-reinforced coupling agents, 2-6 parts of resin-reinforced crosslinking agents, 2-6 parts of resin-reinforced toughening agents, 2-6 parts of resin-reinforced catalysts, and 2-6 parts of resin-reinforced viscosity modifiers;

[0010] The resin reinforcing coupling agent includes a silane coupling agent, a titanate coupling agent, and a zirconate coupling agent;

[0011] The resin reinforcing cross-linking agent comprises a peroxide;

[0012] The resin reinforcing and toughening agent includes a rubber modifier and a thermoplastic elastomer;

[0013] The resin enhancement catalyst includes a tertiary amine and an organic acid;

[0014] The resin-enhancing viscosity modifier includes aliphatic diacid esters and citrate esters;

[0015] The additives include waterproofing agents, preservatives and deodorants;

[0016] Waterproofing agents include paraffin emulsion and asphalt emulsion;

[0017] Preservatives include copper-chromium complex, alkaline copper quat, sodium fluoride;

[0018] Deodorants include activated charcoal.

[0019] In detail, the production process of the fiberboard is as follows:

[0020] Step 1: Select appropriate fibers, separate the fibers by chemical or mechanical methods to form cellulose fibers, and prepare the required resins, additives, fillers, resin-enhanced coupling agents, resin-enhanced cross-linking agents, resin-enhanced toughening agents, resin-enhanced catalysts, and resin-enhanced viscosity modifiers;

[0021] Step 2: Bleaching, washing, and drying the cellulose fibers to remove impurities and improve fiber quality;

[0022] Step 3: Evenly mix the treated cellulose fibers with resin, additives, fillers, resin-enhanced coupling agents, resin-enhanced crosslinking agents, resin-enhanced toughening agents, resin-enhanced catalysts, and resin-enhanced viscosity modifiers to form a fiber mixture;

[0023] Step 4: Feed the fiber mixture into a forming machine, and through the action of high pressure and high temperature, the fiber mixture is formed into a sheet with a certain thickness and shape;

[0024] Step 5: Send the formed board into the dryer, and evaporate the water in the board through high-temperature drying to improve the strength and stability of the board;

[0025] Step 6: Send the dried board into the hot press, and solidify the resin in the board through high temperature and high pressure, further improving the strength and stability of the board;

[0026] Step 7: Send the hot-pressed sheet to a cooler to cool it down to room temperature for subsequent processing and treatment.

[0027] Step 8: Cut the board into required size and sand it to obtain a smooth surface.

[0028] In detail, the cellulose fibers are mainly wood fibers.

[0029] In detail, the resin includes urea-formaldehyde resin, phenol-formaldehyde resin and melamine-formaldehyde resin, any one of which can be selected.

[0030] In detail, the filler mainly includes calcium carbonate and talcum powder, one of which can be selected;

[0031] In detail, the cellulose fibers in the third step are mixed with the resin, additives and fillers under the following specific conditions:

[0032] The temperature is controlled at 50-100 degrees;

[0033] The time is controlled within 5-20 minutes;

[0034] The pressure is controlled at 5-12 atmospheres;

[0035] The mixing equipment is a mixer, kneader or extruder;

[0036] The mixing order is to mix cellulose with resin, and then add additives and fillers.

[0037] In detail, the drying conditions in the fifth step are:

[0038] The temperature is controlled at 50-150 degrees;

[0039] Humidity is controlled at 10%-50%;

[0040] The air velocity in the drying area is 1-10m / s;

[0041] The drying equipment used is an oven, a drying kiln or a microwave dryer.

[0042] In detail, the hot pressing conditions in the sixth step are:

[0043] The temperature is controlled at 100-200 degrees;

[0044] The hot pressing pressure is 8-15 atmospheres;

[0045] The hot pressing equipment is a hot press or a hydraulic press.

[0046] In detail, the cooling conditions in the seventh step are:

[0047] The temperature is controlled between 10-30 degrees;

[0048] The cooling rate is 1-10 degrees Celsius / minute;

[0049] The cooling equipment can be cooling kiln, air cooling equipment or water cooling equipment.

[0050] The design scheme proposed by the present invention has the following beneficial effects during application:

[0051] 1. The fiberboard replaces the traditional leather, making it more breathable. At the same time, compared with sponge, it has sufficient anti-trampling strength. When used as a shoe lining, it can significantly reduce the overall weight of the shoe and improve wearing comfort. The fiberboard is light in weight, but it has good support and structural stability and can provide sufficient support and protection.

[0052] 2. The fiberboard shoe lining usually has a certain porosity, which can provide good air permeability, help to remove excess moisture from the feet, keep the inside of the shoe dry, and has a certain elasticity, which can absorb impact, provide good cushioning effect, and reduce fatigue caused by long-term wear. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present invention will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0054] Example 1

[0055] A high-strength lightweight fiberboard, comprising a fiberboard, by weight: 40 parts of cellulose fiber, 20 parts of resin, 10 parts of additives, 10 parts of fillers, 4 parts of resin-enhanced coupling agents, 4 parts of resin-enhanced cross-linking agents, 4 parts of resin-enhanced toughening agents, 4 parts of resin-enhanced catalysts, and 4 parts of resin-enhanced viscosity modifiers;

[0056] The resin reinforcing coupling agent includes a silane coupling agent, a titanate coupling agent, and a zirconate coupling agent;

[0057] The resin reinforcing cross-linking agent comprises a peroxide;

[0058] The resin reinforcing and toughening agent includes a rubber modifier and a thermoplastic elastomer;

[0059] The resin enhancement catalyst includes a tertiary amine and an organic acid;

[0060] The resin-enhancing viscosity modifier includes aliphatic diacid esters and citrate esters;

[0061] The additives include waterproofing agents, preservatives and deodorants;

[0062] Waterproofing agents include paraffin emulsion and asphalt emulsion;

[0063] Preservatives include copper-chromium complex, alkaline copper quat, sodium fluoride;

[0064] Deodorants include activated charcoal.

[0065] Resin-reinforced coupling agents can improve the interface bonding between the resin and the bonded material and increase the bonding strength. Common coupling agents include silane coupling agents, titanate coupling agents, zirconate coupling agents, etc.

[0066] Resin reinforcing cross-linking agents can promote the cross-linking reaction of resins, improve the curing degree and bonding strength of resins, and common cross-linking agents include peroxides, etc.

[0067] Resin reinforcing toughening agents can improve the toughness and impact resistance of resins, thereby improving bonding strength. Common toughening agents include rubber modifiers, thermoplastic elastomers, etc.

[0068] Resin enhancing catalysts can accelerate the curing reaction of resins and improve bonding strength. Common catalysts include tertiary amines, organic acids, etc.

[0069] Resin-enhanced viscosity modifiers can adjust the viscosity of the resin, making it easier to penetrate into the micropores of the bonded material and improve the bonding strength. Common viscosity modifiers include solvents, plasticizers, etc.

[0070] It should be further explained that the production process of the fiberboard is as follows:

[0071] Step 1: Select appropriate fibers, separate the fibers by chemical or mechanical methods to form cellulose fibers, and prepare the required resins, additives, fillers, resin-enhanced coupling agents, resin-enhanced cross-linking agents, resin-enhanced toughening agents, resin-enhanced catalysts, and resin-enhanced viscosity modifiers;

[0072] Step 2: Bleaching, washing, and drying the cellulose fibers to remove impurities and improve fiber quality;

[0073] Step 3: Evenly mix the treated cellulose fibers with resin, additives, fillers, resin-enhanced coupling agents, resin-enhanced crosslinking agents, resin-enhanced toughening agents, resin-enhanced catalysts, and resin-enhanced viscosity modifiers to form a fiber mixture;

[0074] Step 4: Feed the fiber mixture into a forming machine, and through the action of high pressure and high temperature, the fiber mixture is formed into a sheet with a certain thickness and shape;

[0075] Step 5: Send the formed board into the dryer, and evaporate the water in the board through high-temperature drying to improve the strength and stability of the board;

[0076] Step 6: Send the dried board into the hot press, and solidify the resin in the board through high temperature and high pressure, further improving the strength and stability of the board;

[0077] Step 7: Send the hot-pressed sheet to a cooler to cool it down to room temperature for subsequent processing and treatment.

[0078] Step 8: Cut the board into required size and sand it to obtain a smooth surface.

[0079] It should be further explained that cellulose fibers are mainly wood fibers.

[0080] It should be further explained that the resin includes urea-formaldehyde resin, phenol-formaldehyde resin and melamine-formaldehyde resin, any one of which can be selected.

[0081] It should be further explained that the fillers mainly include calcium carbonate and talcum powder, one of which can be selected;

[0082] It should be further explained that the specific conditions for mixing the cellulose fibers with the resin, additives and fillers in the third step are:

[0083] The temperature is controlled at 50-100 degrees;

[0084] The time is controlled within 5-20 minutes;

[0085] The pressure is controlled at 5-12 atmospheres;

[0086] The mixing equipment is a mixer, kneader or extruder;

[0087] The mixing order is to mix cellulose with resin, and then add additives and fillers.

[0088] It should be further explained that the drying conditions in the fifth step are:

[0089] The temperature is controlled at 50-150 degrees;

[0090] Humidity is controlled at 10%-50%;

[0091] The air velocity in the drying area is 1-10m / s;

[0092] The drying equipment used is an oven, a drying kiln or a microwave dryer.

[0093] It should be further explained that the hot pressing conditions in the sixth step are:

[0094] The temperature is controlled at 100-200 degrees;

[0095] The hot pressing pressure is 8-15 atmospheres;

[0096] The hot pressing equipment is a hot press or a hydraulic press.

[0097] It should be further explained that the cooling conditions in step 7 are:

[0098] The temperature is controlled between 10-30 degrees;

[0099] The cooling rate is 1-10 degrees Celsius / minute;

[0100] The cooling equipment can be cooling kiln, air cooling equipment or water cooling equipment.

[0101] Example 2

[0102] A high-strength lightweight fiberboard comprises a fiberboard, in parts by weight: 45 parts of cellulose fibers, 20 parts of resin, 15 parts of additives, 5 parts of fillers, 3 parts of resin-reinforced coupling agents, 4 parts of resin-reinforced cross-linking agents, 2 parts of resin-reinforced toughening agents, 3 parts of resin-reinforced catalysts, and 3 parts of resin-reinforced viscosity regulators.

[0103] It should be further explained that the production process of the fiberboard is as follows:

[0104] Step 1: Select appropriate fibers, separate the fibers by chemical or mechanical methods to form cellulose fibers, and prepare the required resins, additives, fillers, resin-enhanced coupling agents, resin-enhanced cross-linking agents, resin-enhanced toughening agents, resin-enhanced catalysts, and resin-enhanced viscosity modifiers;

[0105] Step 2: Bleaching, washing, and drying the cellulose fibers to remove impurities and improve fiber quality;

[0106] Step 3: Evenly mix the treated cellulose fibers with resin, additives, fillers, resin-enhanced coupling agents, resin-enhanced crosslinking agents, resin-enhanced toughening agents, resin-enhanced catalysts, and resin-enhanced viscosity modifiers to form a fiber mixture;

[0107] Step 4: Feed the fiber mixture into a forming machine, and through the action of high pressure and high temperature, the fiber mixture is formed into a sheet with a certain thickness and shape;

[0108] Step 5: Send the formed board into the dryer, and evaporate the water in the board through high-temperature drying to improve the strength and stability of the board;

[0109] Step 6: Send the dried board into the hot press, and solidify the resin in the board through high temperature and high pressure, further improving the strength and stability of the board;

[0110] Step 7: Send the hot-pressed sheet to a cooler to cool it down to room temperature for subsequent processing and treatment.

[0111] Step 8: Cut the board into required size and sand it to obtain a smooth surface.

[0112] It should be further explained that cellulose fibers are mainly wood fibers.

[0113] It should be further explained that the resin includes urea-formaldehyde resin, phenol-formaldehyde resin and melamine-formaldehyde resin, any one of which can be selected.

[0114] It should be further explained that the fillers mainly include calcium carbonate and talcum powder, one of which can be selected;

[0115] It should be further explained that the specific conditions for mixing the cellulose fibers with the resin, additives and fillers in the third step are:

[0116] The temperature is controlled at 50-100 degrees;

[0117] The time is controlled within 5-20 minutes;

[0118] The pressure is controlled at 5-12 atmospheres;

[0119] The mixing equipment is a mixer, kneader or extruder;

[0120] The mixing order is to mix cellulose with resin, and then add additives and fillers.

[0121] It should be further explained that the drying conditions in the fifth step are:

[0122] The temperature is controlled at 50-150 degrees;

[0123] Humidity is controlled at 10%-50%;

[0124] The air velocity in the drying area is 1-10m / s;

[0125] The drying equipment used is an oven, a drying kiln or a microwave dryer.

[0126] It should be further explained that the hot pressing conditions in the sixth step are:

[0127] The temperature is controlled at 100-200 degrees;

[0128] The hot pressing pressure is 8-15 atmospheres;

[0129] The hot pressing equipment is a hot press or a hydraulic press.

[0130] It should be further explained that the cooling conditions in step 7 are:

[0131] The temperature is controlled between 10-30 degrees;

[0132] The cooling rate is 1-10 degrees Celsius / minute;

[0133] Cooling equipment: cooling kiln, air cooling equipment or water cooling equipment

[0134] When the technical solution is implemented: it replaces traditional leather, making it more breathable. At the same time, compared with sponge, it has sufficient anti-trampling strength. When used as a shoe lining, it can significantly reduce the overall weight of the shoe and improve wearing comfort. The fiberboard is light in weight, but it has good support and structural stability and can provide sufficient support and protection.

[0135] The fiberboard shoe lining usually has a certain porosity, which can provide good breathability, help to remove excess moisture from the feet and keep the inside of the shoe dry. It also has a certain elasticity, can absorb impact, provide good cushioning effect, and reduce fatigue caused by long-term wear.

[0136] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-strength and lightweight fiberboard, comprising a fiberboard, characterized in that: By weight ratio: 35-50 parts of cellulose fiber, 15-20 parts of resin, 10-15 parts of additives, 5-10 parts of fillers, 2-6 parts of resin-reinforced coupling agents, 2-6 parts of resin-reinforced cross-linking agents, 2-6 parts of resin-reinforced toughening agents, 2-6 parts of resin-reinforced catalysts, and 2-6 parts of resin-reinforced viscosity modifiers. The resin reinforcing coupling agent includes a silane coupling agent, a titanate coupling agent, and a zirconate coupling agent; The resin reinforcing cross-linking agent comprises a peroxide; The resin reinforcing and toughening agent includes a rubber modifier and a thermoplastic elastomer; The resin enhancement catalyst includes a tertiary amine and an organic acid; The resin-enhancing viscosity modifier includes aliphatic diacid esters and citrate esters; The additives include waterproofing agents, preservatives and deodorants; Waterproofing agents include paraffin emulsion and asphalt emulsion; Preservatives include copper-chromium complex, alkaline copper quat, sodium fluoride; Deodorants include activated charcoal.

2. A high-strength lightweight fiberboard and production process according to claim 1, characterized in that: The production process of the fiberboard is as follows: Step 1: Select appropriate fibers, separate the fibers by chemical or mechanical methods to form cellulose fibers, and prepare the required resins, additives, fillers, resin-enhanced coupling agents, resin-enhanced cross-linking agents, resin-enhanced toughening agents, resin-enhanced catalysts, and resin-enhanced viscosity modifiers; Step 2: Bleaching, washing, and drying the cellulose fibers to remove impurities and improve fiber quality; Step 3: Evenly mix the treated cellulose fibers with resin, additives, fillers, resin-enhanced coupling agents, resin-enhanced crosslinking agents, resin-enhanced toughening agents, resin-enhanced catalysts, and resin-enhanced viscosity modifiers to form a fiber mixture; Step 4: Feed the fiber mixture into a forming machine, and through the action of high pressure and high temperature, the fiber mixture is formed into a sheet with a certain thickness and shape; Step 5: Send the formed board into the dryer, and evaporate the water in the board through high-temperature drying to improve the strength and stability of the board; Step 6: Send the dried board into the hot press, and solidify the resin in the board through high temperature and high pressure, further improving the strength and stability of the board; Step 7: Send the hot-pressed sheet to a cooler to cool it down to room temperature for subsequent processing and treatment. Step 8: Cut the board into required size and sand it to obtain a smooth surface.

3. A high-strength lightweight fiberboard and production process according to claim 2, characterized in that: The cellulose fibers are mainly wood fibers.

4. A high-strength lightweight fiberboard and production process according to claim 2, characterized in that: The resin includes urea-formaldehyde resin, phenol-formaldehyde resin and melamine-formaldehyde resin, and any one of the three is selected.

5. The high-strength lightweight fiberboard and production process according to claim 2, characterized in that: The filler mainly includes calcium carbonate and talcum powder, and any one of them can be selected.

6. The high-strength lightweight fiberboard and production process according to claim 2, characterized in that: Specific conditions for mixing the cellulose fibers with the resin, additives and fillers in the third step: The temperature is controlled at 50-100 degrees; The time is controlled within 5-20 minutes; The pressure is controlled at 5-12 atmospheres; The mixing equipment is a mixer, kneader or extruder; The mixing order is to mix cellulose with resin, and then add additives and fillers.

7. The high-strength lightweight fiberboard and production process according to claim 2, characterized in that: Drying conditions in the fifth step: The temperature is controlled at 50-150 degrees; Humidity is controlled at 10%-50%; The air velocity in the drying area is 1-10m / s; The drying equipment used is an oven, a drying kiln or a microwave dryer.

8. The high-strength lightweight fiberboard and production process according to claim 2, characterized in that: The hot pressing conditions in the sixth step are: The temperature is controlled at 100-200 degrees; The hot pressing pressure is 8-15 atmospheres; The hot pressing equipment is a hot press or a hydraulic press.

9. The high-strength lightweight fiberboard and production process according to claim 2, characterized in that: The cooling conditions in the seventh step are: The temperature is controlled between 10-30 degrees; The cooling rate is 1-10 degrees Celsius / minute; The cooling equipment can be cooling kiln, air cooling equipment or water cooling equipment.