CN111002660A - High-strength plant bean gum ecological plate and manufacturing method thereof - Google Patents
High-strength plant bean gum ecological plate and manufacturing method thereof Download PDFInfo
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- CN111002660A CN111002660A CN201911231294.8A CN201911231294A CN111002660A CN 111002660 A CN111002660 A CN 111002660A CN 201911231294 A CN201911231294 A CN 201911231294A CN 111002660 A CN111002660 A CN 111002660A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
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- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 61
- 239000004917 carbon fiber Substances 0.000 claims abstract description 61
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 46
- 239000004744 fabric Substances 0.000 claims abstract description 44
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 44
- 235000010627 Phaseolus vulgaris Nutrition 0.000 claims abstract description 43
- 239000003292 glue Substances 0.000 claims abstract description 37
- 244000068988 Glycine max Species 0.000 claims abstract description 24
- 235000010469 Glycine max Nutrition 0.000 claims abstract description 24
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Abstract
The invention provides a high-strength plant bean gum ecological plate and a manufacturing method thereof, wherein the ecological plate sequentially comprises a plate core, an adhesive layer, carbon fiber cloth and reinforcing layers from the center to two sides; the raw materials of the bonding layer comprise: 80-120 parts of modified polyamide resin A, 20-30 parts of defatted soybean powder, 5-15 parts of curing agent and 30-50 parts of water; the reinforcing layer comprises the following raw materials: 250 parts of modified polyamide resin B200-. The invention uses the carbon fiber cloth to strengthen the performance of the whole ecological plate; the bean gum is reinforced by using the chopped carbon fibers, and meanwhile, the chopped carbon fibers can also effectively reduce the corrosion of moths to the board; the ecological plate uses the modified soybean glue as a bonding agent, so that the emission of formaldehyde is effectively reduced and prevented. The invention is ecological and environment-friendly, has high strength and can be widely applied to the field of furniture building materials.
Description
Technical Field
The invention relates to the field of furniture building materials, in particular to a high-strength plant bean gum ecological plate and a manufacturing method thereof.
Background
According to statistics, the yield of the national artificial boards in 2018 is 2.99 billion cubic meters, and the method makes a great contribution to national economic development. However, with the change of international and domestic economic conditions, the artificial board industry is becoming fierce. Among them, environmental protection and low formaldehyde are always one of the breakthrough and development directions of the artificial board industry, and products which are not environment-friendly are eliminated by the market.
The overproof event of the formaldehyde of the medium exposure artificial board at home and abroad emerges endlessly, and causes great impact on the artificial board industry. Formaldehyde is mainly derived from wood adhesives. Low-aldehyde, aldehyde-free products have been the focus of industry development. In recent years, the low-formaldehyde and formaldehyde-free ecological board taking the soybean glue as the adhesive is favored by consumers due to the characteristics of beautiful surface, ecological environmental protection, convenient construction, scratch resistance and wear resistance.
However, the existing bean gum ecological plate has the following problems: 1. the strength of the board body is insufficient, the board body is easy to damage in the using process, and the problems of falling off, corner falling and the like easily occur at the corner position of the board; 2. the plate without using formaldehyde has weak insect prevention effect, and the prior art adds cypermethrin, cyphenothrin and other insect prevention agents into the adhesive, so that new pollution is generated.
Therefore, the bean gum ecological plate which is high in strength, good in insect prevention effect and ecological and environment-friendly is urgently needed in the market.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a high-strength plant bean gum ecological plate and a manufacturing method thereof, improves the strength of the plant bean gum ecological plate, and fills the blank in the market.
A high-strength plant bean gum ecological plate and a manufacturing method thereof, wherein the ecological plate sequentially comprises a plate core, an adhesive layer covered on the plate core, carbon fiber cloth covered on the adhesive layer and a reinforcing layer covered on the carbon fiber cloth from the center to two sides;
the adhesive layer comprises the following raw materials in parts by weight: 80-120 parts of modified polyamide resin A, 20-30 parts of defatted soybean powder, 5-15 parts of curing agent and 30-50 parts of water;
the reinforcing layer comprises the following raw materials in parts by weight: 250 parts of modified polyamide resin B200-;
the composite regulator is one or more of sodium hydroxide, sodium bisulfate and sodium dodecyl sulfate; the curing agent is compounded and coagulated by sodium hydroxide and 2-hydroxyethylamine, and the solid content is 20-30%.
The invention also provides a manufacturing method of the high-strength plant bean gum ecological plate, which comprises the following steps:
s1, preparing adhesive layer bean gum: adding 20-30 parts of defatted soybean powder into 80-120 parts of modified polyamide resin A, uniformly stirring at room temperature, adding 30-50 parts of water and 5-15 parts of curing agent to obtain bonding layer soybean gum;
s2, manufacturing a reinforcing layer bean gum: adding 20-30 parts of composite regulator into 400 parts of 350-plus water, stirring and dissolving, heating to 70-80 ℃, adding 220 parts of soybean protein isolate, uniformly stirring and standing for 0.5-2 hours, cooling to normal temperature, adjusting the pH value to 6.5-7 by using formic acid, adding 250 parts of modified polyamide resin B200-plus and 10-20 parts of short carbon fiber, and uniformly mixing to obtain a reinforcing layer bean gum;
s3, performing surface treatment on the board core to remove dust and sundries, uniformly spraying the bonding layer bean gum to the surface of the board core by using a glue sprayer, wherein the glue spraying amount is 40-50 g/square meter, and then performing primary hot pressing;
s4, uniformly paving the carbon fiber cloth on the board after the first hot pressing, spraying the bean gum of the reinforcing layer on the carbon fiber cloth and the board by using a glue spraying machine, wherein the glue spraying amount is 30-60 g/square meter, and then carrying out the second hot pressing.
As an improvement, the raw materials of the composite regulator comprise, by mass, 10-15 parts of sodium bisulfate, 5-10 parts of sodium dodecyl sulfate and 5-10 parts of sodium hydroxide.
As an improvement, the carbon fiber cloth is a plain weave fabric woven by 6K or 12K carbon fibers, and the length of the chopped carbon fibers is 5-10 mm.
As an improvement, the modified polyamide resin A has a solid content of 25-35%, a viscosity of 80-120 mPa & s and a pH value of 3.0-3.5; the solid content of the modified polyamide resin B is 30-40%, the viscosity is 700-800 mPa.s, and the pH value is 3.5-4.
As an improvement, a decorative layer is further arranged on the reinforcing layer, and the decorative layer is melamine impregnated paper.
As an improvement, the first hot pressing temperature of S3 is 150-230 ℃, the pressure is 2-3MPa, and the hot pressing time is 50-100S.
As an improvement, the second hot pressing temperature of S4 is 200-300 ℃, the pressure is 2-3MPa, and the hot pressing time is 200-400S.
As an improvement, in the step S4, the carbon fiber cloth is placed in the bean gum of the reinforcing layer to be soaked for 10-40min, and then the carbon fiber cloth is uniformly laid on the board after the board is subjected to the first hot pressing.
As an improvement, the number of layers of the carbon fiber cloth is 1-3.
The invention has the beneficial effects that:
1. according to the invention, the carbon fiber cloth is used for reinforcing the plate, and the modified soybean glue is used for bonding and coating the plate, so that the overall physical strength of the plate can be effectively enhanced; the bonding layer bean gum has strong bonding force, so that the bonding effect of the plate core and the carbon fiber cloth can be enhanced, and the tensile strength and the compressive strength of the plate are improved; the chopped carbon fiber reinforced reinforcing layer has the physical characteristics that after the reinforcing layer is subjected to hot-pressing curing, the reinforcing layer is high in strength and good in toughness, and the conditions of corner falling, corner falling and the like of the plate can be effectively prevented.
2. The modified soybean gum is used as the adhesive, and the adhesive does not contain aldehyde, so that the release of formaldehyde can be radically avoided, and the ecological environment-friendly effect is achieved.
3. After the reinforcing layer bean gum is compounded with the chopped carbon fibers, the corrosion of moths can be effectively prevented, and the insect prevention effect is good.
Drawings
Fig. 1 is a structural view of a high-strength plant bean gum ecological plate.
1-plate core, 2-bonding layer, 3-carbon fiber cloth and 4-reinforcing layer.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
The following examples use the following raw material specifications:
the modified polyamide resin A has the solid content of 30 percent, the viscosity of 80-100mPa & s and the pH value of 3.0-3.5;
the solid content of the modified polyamide resin B is 40 percent, the viscosity is 700-800 mPa.s, and the pH value is 3.5-4.0;
the curing agent is compounded and coagulated by sodium hydroxide and 2-hydroxyethylamine, and the solid content is 20-30%;
the carbon fiber cloth is a plain fabric woven by 6K carbon fibers;
the length of the chopped carbon fibers is 6 mm.
Example 1
The embodiment discloses a high-strength plant bean gum ecological plate, as shown in fig. 1, the ecological plate sequentially comprises a plate core 1, a bonding layer 2 covering the plate core, a carbon fiber cloth 3 covering the bonding layer, and a reinforcing layer 4 covering the carbon fiber cloth from the center to two sides.
The bonding layer 2 is formed by hot pressing formaldehyde-free soybean glue and is used for enhancing the connection strength of the carbon fiber cloth 3 and the board core 1 and improving the compressive strength and the tensile strength of the ecological board. The reinforcing layer 4 is made of formaldehyde-free soybean glue compounded by short carbon fibers. After the formaldehyde-free soybean gum is compounded with the chopped carbon fibers and is subjected to hot pressing and curing, the mechanical strength of the reinforcing layer 4 can be effectively improved, and the internal plate core 1 and the internal carbon fiber cloth 2 are protected.
Example 2
The embodiment discloses a manufacturing method for directly laying carbon fiber cloth on an adhesive layer.
A high-strength plant bean gum ecological plate and a manufacturing method thereof comprise the following steps:
s1, preparing adhesive layer bean gum: adding 30 parts of defatted soybean powder into 100 parts of modified polyamide resin A, stirring uniformly at room temperature, and adding 40 parts of water and 10 parts of curing agent to obtain bonding layer soybean gum;
s2, manufacturing a reinforcing layer bean gum: adding 12 parts of sodium sulfite, 8 parts of sodium dodecyl sulfate and 8g of sodium hydroxide into 400 parts of water, uniformly stirring, heating to 75 ℃, adding 200 parts of soybean protein isolate, keeping the temperature at 75 ℃ and continuously stirring for 1 hour to hydrolyze protein in the soybean protein isolate, reduce the molecular weight of the soybean protein and increase the bonding effect; cooling the glue solution to normal temperature, adjusting the pH value to 6.5-7 by using formic acid, adding 200 parts of modified polyamide resin B and 15 parts of chopped carbon fibers, and uniformly mixing to obtain a reinforcing layer bean gum;
s3, treating the surface of the board core by adopting a shaving board, removing dust and sundries, uniformly spraying the bonding layer bean gum to the surface of the board core by using a glue sprayer, wherein the glue spraying amount is 40 g/square meter, and carrying out primary hot pressing at 180 ℃ and 2.5MPa for 60S;
s4, uniformly paving carbon fiber cloth on the board after the first hot pressing, uniformly spraying the bean gum of the reinforcing layer on the carbon fiber cloth and the board by using a glue spraying machine, wherein the glue spraying amount is 60 g/square meter, and then carrying out second hot pressing at 220 ℃ and 2.5MPa for 300S;
and S5, polishing the plate after the second hot pressing.
Example 3
The embodiment discloses a manufacturing method for hot-pressing and reinforcing carbon fiber cloth after being soaked in reinforcing layer bean gum.
A high-strength plant bean gum ecological plate and a manufacturing method thereof comprise the following steps:
s1, preparing adhesive layer bean gum: adding 20 parts of defatted soybean powder into 120 parts of modified polyamide resin A, stirring uniformly at room temperature, and adding 50 parts of water and 15 parts of curing agent to obtain bonding layer soybean gum;
s2, manufacturing a reinforcing layer bean gum: adding 12 parts of sodium sulfite, 8 parts of sodium dodecyl sulfate and 8g of sodium hydroxide into 350 parts of water, uniformly stirring, heating to 75 ℃, adding 180 parts of soybean protein isolate, keeping the temperature at 75 ℃ and continuously stirring for 1 hour to hydrolyze protein in the soybean protein isolate, reduce the molecular weight of the soybean protein and increase the bonding effect; cooling the glue solution to normal temperature, adjusting the pH value to 6.5-7 by using formic acid, adding 250 parts of modified polyamide resin B and 20 parts of chopped carbon fibers, and uniformly mixing to obtain a reinforcing layer bean gum;
s3, treating the surface of the board core by adopting a shaving board, removing dust and sundries, uniformly spraying the bonding layer bean gum to the surface of the board core by using a glue sprayer, wherein the glue spraying amount is 40 g/square meter, carrying out first hot pressing at 180 ℃ and 2.5MPa, and the hot pressing time is 50S;
s4, soaking the carbon fiber cloth in the bean gum of the reinforcing layer for 20min, taking out, uniformly paving on the plate subjected to the first hot pressing, uniformly spraying the bean gum of the reinforcing layer onto the carbon fiber cloth and the plate by using a glue spraying machine, wherein the glue spraying amount is 60 g/square meter, and then carrying out the second hot pressing at 220 ℃ and 2.5MPa for 300S;
and S5, polishing the plate after the second hot pressing.
Example 4
The embodiment discloses a manufacturing method of a composite ecological plate using two layers of carbon fiber cloth.
A high-strength plant bean gum ecological plate and a manufacturing method thereof comprise the following steps:
s1, preparing adhesive layer bean gum: adding 20 parts of defatted soybean powder into 80 parts of modified polyamide resin A, stirring uniformly at room temperature, and adding 30 parts of water and 5 parts of curing agent to obtain bonding layer soybean gum;
s2, manufacturing a reinforcing layer bean gum: adding 12 parts of sodium sulfite, 8 parts of sodium dodecyl sulfate and 8g of sodium hydroxide into 400 parts of water, uniformly stirring, heating to 75 ℃, adding 220 parts of soybean protein isolate, keeping the temperature at 75 ℃ and continuously stirring for 1 hour to hydrolyze protein in the soybean protein isolate, reduce the molecular weight of the soybean protein and increase the bonding effect; cooling the glue solution to normal temperature, adjusting the pH value to 6.5-7 by using formic acid, adding 200 parts of modified polyamide resin B and 15 parts of chopped carbon fibers, and uniformly mixing to obtain a reinforcing layer bean gum;
s3, treating the surface of the board core by adopting a shaving board, removing dust and sundries, uniformly spraying the bonding layer bean gum to the surface of the board core by using a glue sprayer, wherein the glue spraying amount is 40 g/square meter, carrying out first hot pressing at 180 ℃ and under the condition of 2.5MPa, and the hot pressing time is 100S;
s4, soaking the carbon fiber cloth in the bean gum of the reinforcing layer for 20min, taking out, then uniformly paving on the plate subjected to the first hot pressing, uniformly spraying the bean gum of the reinforcing layer onto the carbon fiber cloth and the plate by using a glue sprayer, wherein the glue spraying amount is 30 g/square meter, and then carrying out second hot pressing at 220 ℃ and 2.5MPa for 200S;
s5, laying the carbon fiber cloth soaked in the reinforcing layer bean gum on the board after the second hot pressing, uniformly spraying the reinforcing layer bean gum on the carbon fiber cloth and the board by using a glue sprayer, wherein the glue spraying amount is 60 g/square meter, and then carrying out third hot pressing at 220 ℃ and 2.5MPa for 400S;
and S6, polishing the plate after the third hot pressing.
Example 5
The embodiment discloses a method for manufacturing an ecological plate with a decorative layer.
A high-strength plant bean gum ecological plate and a manufacturing method thereof comprise the following steps:
s1, preparing adhesive layer bean gum: adding 30 parts of defatted soybean powder into 100 parts of modified polyamide resin A, stirring uniformly at room temperature, and adding 40 parts of water and 10 parts of curing agent to obtain bonding layer soybean gum;
s2, manufacturing a reinforcing layer bean gum: adding 12 parts of sodium sulfite, 8 parts of sodium dodecyl sulfate and 8g of sodium hydroxide into 400 parts of water, uniformly stirring, heating to 75 ℃, adding 200 parts of soybean protein isolate, keeping the temperature at 75 ℃ and continuously stirring for 1 hour to hydrolyze protein in the soybean protein isolate, reduce the molecular weight of the soybean protein and increase the bonding effect; cooling the glue solution to normal temperature, adjusting the pH value to 6.5-7 by using formic acid, adding 200 parts of modified polyamide resin B and 15 parts of chopped carbon fibers, and uniformly mixing to obtain a reinforcing layer bean gum;
s3, treating the surface of the board core by adopting a shaving board, removing dust and sundries, uniformly spraying the bonding layer bean gum to the surface of the board core by using a glue sprayer, wherein the glue spraying amount is 40 g/square meter, carrying out first hot pressing at 180 ℃ and under the condition of 2.5MPa, and the hot pressing time is 200S;
s4, uniformly paving carbon fiber cloth on the board after the first hot pressing, uniformly spraying the bean gum of the reinforcing layer on the carbon fiber cloth and the board by using a glue spraying machine, wherein the glue spraying amount is 60 g/square meter, and then carrying out pre-hot pressing at 220 ℃ and under the condition of 2.5MPa for 40S;
s5, paving the melamine impregnated paper on the board after the pre-hot pressing, and then carrying out the secondary hot pressing at 220 ℃ under the condition of 2.5MPa for 300S.
According to the invention, the carbon fiber cloth is used for reinforcing the plate, and the modified soybean glue is used for bonding and coating the plate, so that the overall physical strength of the plate is effectively enhanced, the bonding strength of the soybean glue on the bonding layer is strong, the bonding effect of the plate core and the carbon fiber cloth can be enhanced, and the tensile strength and the compressive strength of the plate are improved; the short carbon fiber strengthens the physical characteristic of the reinforcing layer, the reinforcing layer after hot-pressing and solidifying has high strength and good toughness, and can effectively prevent the edges and corners of the plate from falling off, falling off and the like; meanwhile, after the reinforcing layer bean gum is compounded with the chopped carbon fibers, the corrosion of moths can be effectively prevented, and the insect prevention effect is good.
While specific embodiments of, and examples for, the invention are described in detail, these are by way of illustration only, and any equivalent modifications or alterations to this invention would be apparent to those skilled in the art and are intended to be included within the scope of this invention. Accordingly, it is intended that all equivalent alterations and modifications be included within the scope of the invention, without departing from the spirit and scope of the invention.
Claims (10)
1. A high-strength plant bean gum ecological plate and a manufacturing method thereof are characterized in that the ecological plate sequentially comprises a plate core, an adhesive layer covered on the plate core, carbon fiber cloth covered on the adhesive layer and a reinforcing layer covered on the carbon fiber cloth from the center to two sides;
the adhesive layer comprises the following raw materials in parts by weight: 80-120 parts of modified polyamide resin A, 20-30 parts of defatted soybean powder, 5-15 parts of curing agent and 30-50 parts of water;
the reinforcing layer comprises the following raw materials in parts by weight: 250 parts of modified polyamide resin B200-;
the composite regulator is one or more of sodium hydroxide, sodium bisulfate and sodium dodecyl sulfate;
the curing agent is compounded and coagulated by sodium hydroxide and 2-hydroxyethylamine, and the solid content is 20-30%.
2. The high-strength plant bean gum ecological plate and the manufacturing method thereof as claimed in claim 1, wherein the composite regulator comprises 10-15 parts by mass of sodium bisulfate, 5-10 parts by mass of sodium dodecyl sulfate and 5-10 parts by mass of sodium hydroxide.
3. The high-strength plant bean gum ecological plate and the manufacturing method thereof as claimed in claim 1, wherein the carbon fiber cloth is a plain weave fabric woven by 6K or 12K carbon fibers, and the length of the chopped carbon fibers is 5-10 mm.
4. The ecological plate of high-strength plant bean gum as claimed in claim 1, wherein the modified polyamide resin A has a solid content of 25-35%, a viscosity of 80-120 mPa s, and a pH value of 3.0-3.5; the solid content of the modified polyamide resin B is 30-40%, the viscosity is 700-800 mPa.s, and the pH value is 3.5-4.
5. The ecological plate of high strength plant bean gum and the manufacturing method thereof as claimed in claim 1, wherein a decorative layer is further arranged on the reinforcing layer, and the decorative layer is melamine impregnated paper.
6. The high-strength plant bean gum ecological plate and the manufacturing method thereof as claimed in claim 1, wherein the manufacturing method comprises the following steps:
s1, preparing adhesive layer bean gum: adding 20-30 parts of defatted soybean powder into 80-120 parts of modified polyamide resin A, uniformly stirring at room temperature, adding 30-50 parts of water and 5-15 parts of curing agent to obtain bonding layer soybean gum;
s2, manufacturing a reinforcing layer bean gum: adding 20-30 parts of composite regulator into 400 parts of 350-plus water, stirring and dissolving, heating to 70-80 ℃, adding 220 parts of soybean protein isolate, uniformly stirring and standing for 0.5-2 hours, cooling to normal temperature, adjusting the pH value to 6.5-7 by using formic acid, adding 250 parts of modified polyamide resin B200-plus and 10-20 parts of short carbon fiber, and uniformly mixing to obtain a reinforcing layer bean gum;
s3, performing surface treatment on the board core to remove dust and sundries, uniformly spraying the bonding layer bean gum to the surface of the board core by using a glue sprayer, wherein the glue spraying amount is 40-50 g/square meter, and then performing primary hot pressing;
s4, uniformly paving the carbon fiber cloth on the board after the first hot pressing, spraying the bean gum of the reinforcing layer on the carbon fiber cloth and the board by using a glue spraying machine, wherein the glue spraying amount is 30-60 g/square meter, and then carrying out the second hot pressing.
7. The ecological plate of high-strength plant bean gum as claimed in claim 6, wherein the first hot pressing temperature of S3 is 150-230 ℃, the pressure is 2-3MPa, and the hot pressing time is 50-100S.
8. The ecological plate of high-strength plant bean gum as claimed in claim 6, wherein the temperature of the second hot pressing of S4 is 200-300 ℃, the pressure is 2-3MPa, and the time of the second hot pressing is 200-400S.
9. The high-strength plant bean gum ecological plate and the manufacturing method thereof as claimed in claim 6, wherein the step S4 is to put the carbon fiber cloth into the bean gum of the reinforcing layer to be soaked for 10-40min, and then to evenly lay the carbon fiber cloth on the plate after the first hot pressing.
10. The high-strength plant bean gum ecological plate and the manufacturing method thereof according to claim 1 or 6, wherein the number of the carbon fiber cloth layers is 1-3.
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