CN1174843C - Plastic-fiber board making process - Google Patents
Plastic-fiber board making process Download PDFInfo
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- CN1174843C CN1174843C CNB001030108A CN00103010A CN1174843C CN 1174843 C CN1174843 C CN 1174843C CN B001030108 A CNB001030108 A CN B001030108A CN 00103010 A CN00103010 A CN 00103010A CN 1174843 C CN1174843 C CN 1174843C
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Abstract
The present invention relates to a method for manufacturing a plastic-fiber board, which comprises: (1) dehydration, (2) neutralization, (3) fiber combing and spreading, (4) mixing and coupling, (5) condensation reaction, (6) pressurization, coadunation and solidification, (7) demoulding and baking. The present invention uses solid pollutant powder dust waste slag discharged from paper making enterprises as a raw material, spherical particles in the waste slag are combed and spread into linear free fiber which is mixed with a chemical preparation, coupled and cohered, a fiber structure can be formed in a mixture and is compressed and tensioned, and the serious defect of difficult coadunation because less large fiber is contained in the waste slag is changed. The plastic-fiber board manufactured by the method of the present invention can be a board material and a required section material used for packing box boards, heated boards and furniture building finishing.
Description
Technical Field
The invention relates to a method for manufacturing a fiber board, in particular to a method for manufacturing a plastic-fiber board.
Background
Paper making enterprises need to discharge a large amount of waste, such as solid waste pollutant-waste dust and sludge of ascending and descending of the paper making enterprises, while producing paper, effective treatment can not be achieved all the time, and the solid waste is piled in the open air for a long time, occupies a large amount of land, is bad for the environment and ecological, is not attractive, influences the image of the enterprises and forms a serious practical problem.
Disclosure of Invention
The invention aims to provide a method for manufacturing a plastic-fiber board, which utilizes a large amount of solid garbage pollutants discharged by paper-making enterprises, namely waste dust and sludge, which generally comprises fiber dust, various micro short fibers, plastic sheets and other impurities, as raw materials, applies resin powder and a plasticizing chemical coupling agent in the raw materials, uniformly stirs and heats the raw materials so that the resin and the chemical agent are dissolved and condensed in a mixture, and is pressurized and solidified to manufacture the plastic-fiber board. The solid waste discharged by paper-making enterprises can be effectively treated, and certain economic benefit can be generated while the treatment is carried out. In the prior art, a density plywood is manufactured by pressing wood fibers or grass fibers serving as raw materials and adhesive serving as a bonding material, but in the invention, waste dust and dirt generated by a paper making enterprise are used as raw materials, and because the waste dust and dirt are lack of long fibers such as wood and grass fibers but have more granular substances, the use strength and other required performances such as planing, nailing and the like of the board manufactured by the method cannot be ensured, and the problems of low strength and poor performance caused by the lack of the large fibers in the dirt must be solved.
The invention is realized according to the following technical scheme. The manufacturing method of the plastic-fiber board comprises the following steps: the plastic-fiber board is prepared from the raw materials of upward and downward solid garbage, namely waste dust and sludge, discharged from a paper mill according to the following working procedures:
(1) dehydrating, namely removing water from the raw material;
(2) neutralizing the raw material to make the pH value of the raw material neutral;
(3) combing and unfolding fibers, namely combing and unfolding the spherical fibers in the raw materials into linear free bodies;
(4) mixing and coupling, namely adding a coupling agent and a first additive into the raw materials, and uniformly stirring to combine and couple the fibers in the raw materials with the first additive;
(5) performing condensation reaction, namely adding a second additive into the combined and coupled raw materials, and uniformly stirring to condense and solidify the second additive and fibers in the raw materials;
(6) pressurizing, densifying and curing, namely pressurizing the coagulated and cured raw materials in a mold to densify and mold the raw materials, and removing the coupling agent;
(7) demolding and drying, namely demolding and drying the densely formed product;
in the step (4), in the mixing and coupling, the first additive is phenolic resin, and the coupling agent is absolute ethyl alcohol, and the weight ratio is as follows: the absolute ethyl alcohol accounts for 15-25% of the weight of the raw material, the balance is a mixture of phenolic resin and the raw material, wherein the phenolic resin accounts for 3-9% of the weight of the mixture, and the temperature is 37-90 ℃ during stirring; in the coagulation reaction in the step (5), the weight of the second additive is 2.5-5.5% of the total weight of the mixture, and the second additive comprises the following components in percentage by weight of the second additive:
25-35% of terephthalic acid dibutyrate and 3-7% of ethylenediamine
The rest of the epoxy resin is added to 100 percent,
while stirring, the temperature was maintained at 80-120 ℃.
In the step (6), the pressurizing pressure is 3-4MPa and the holding temperature is 80-120 ℃. The invention takes solid waste discharged by paper making enterprises, namely waste dust and dirt, as raw materials, and neutralizes the dirt according to the pH value of the dirt, and neutralizes the dirt into neutral substances according to a conventional method to provide conditions for the subsequent working procedures. In the treated dust and dirt, the first additive, i.e. phenolic resin powder, and the coupling agent, i.e. absolute ethyl alcohol are applied to combine the fibers and the additive together at a certain temperature, so that the fibers and the additive are densely pulled together to form a fiber structure, and the strength of the product is increased. And applying a second additive, condensing and curing the coupled structure at a certain temperature to strengthen the strength of the product, and finally pressing, compacting and curing to further compact the product and improve the compactness. And removing the coupling agent to finally form the product. Then demoulding and drying to obtain the product.
In conclusion, the invention takes the solid pollutant dust waste residue discharged by paper making enterprises as the raw material, combs and spreads the fiber in the waste residue, couples and coagulates the fiber, so that the resin and the coupling agent which permeate in the dust and the waste residue are catalyzed to promote the mixture to form a fiber structure and be densely pulled, thereby changing the serious defects of less large fiber and difficult dense bonding of the dust contained in the waste residue, and leading the resin particles in the dust of the waste residue to be densely pulled and connected in the pyrolysis combination of the additive coupling agent to form the fiber-reinforced molding. The invention not only solves the problem of solid waste dust pollution discharged by paper making enterprises and beautifies the natural environment, but also can convert the dirty slag waste into plastic fiber boards of valuable industrial and living goods, thereby creating wealth for the society. The plastic-fiber board of the invention has no phenomena of softness, layering, bubbling, carbonization and the like, has plasticity superior to that of a density board, can be planed and nailed, and can be used for manufacturing boards, packing box boards, heat-insulating boards, profiles required by furniture and building decoration, and the like.
Detailed Description
The product is GB99-1 type 0.48-0.86 g/cm3The manufacturing method of the plastic-fiber board is as follows:
(1) and (4) dehydrating. The method takes solid pollutant waste dust and residue discharged by paper making enterprises as raw materials, and the components of the raw materials are detected to comprise the following substances in percentage by weight: 57% of fiber dust, 28% of micro-short fiber, 7% of applicable fiber (more than 0.2 mm), 8% of sundries such as plastic sheets, tin foils, adhesive tapes and the like, and rolling out water by using a double-roller dehydrator.
(2) And (4) neutralizing. According to the fact that the raw material is acid, Ca (OH)2Neutralizing the pH value of the solution to be 7,
the raw materials were neutralized in a blender.
(3) And (5) carding and spreading fibers. Combing and spreading the fibers combined into balls in the raw materials into linear free body fibers in a ball fiber combing and spreading machine, so that the raw materials do not contain spherical fiber bodies.
(4) And (3) mixing and coupling. Adding coupling agent absolute ethyl alcohol and first additive phenolic resin into the raw materials, and uniformly stirring in a stirrer, wherein the weight ratio of each component is as follows: the anhydrous ethanol accounts for 20% of the weight of the raw materials, the balance is the mixture of the phenolic resin and the raw materials, wherein the phenolic resin accounts for 6% of the weight of the mixture, and the temperature is kept at 70 ℃ during stirring, so that the fibers in the raw materials are combined and coupled with the first additive.
(5) And (4) carrying out condensation reaction. And adding the second additive into the coupled raw materials, stirring in a stirrer, and uniformly stirring to enable the second additive and the fibers in the raw materials to be coagulated and solidified. The weight of the second additive is 4% of the total weight of the mixture, and the second additive comprises the following components in percentage by weight of the second additive:
30 percent of terephthalic acid dibutyrate, 5 percent of ethylenediamine and the balance of epoxy resin are added to 100 percent, and the temperature of the introduced steam is 110 ℃ during stirring.
(6) And (5) pressing, compacting and solidifying. Putting the coagulated and solidified raw materials into a mould, pressurizing to make the raw materials be tightly combined and formed. The pressure was 3.5MPa and the temperature was 100 ℃. During pressurization, one side of the mold is in a sieve shape to filter out and remove the coupling agent.
(7) And (5) demolding and drying. The mold is removed and the productis dried in a dryer at a temperature of 105 ℃. After drying, calendering can be carried out, and the product is calendered in a double-roll calender.
Claims (2)
1. A manufacturing method of a plastic-fiber board is characterized by comprising the following steps: the plastic-fiber board is prepared from the raw materials of upward and downward solid garbage, namely waste dust and sludge, discharged from a paper mill according to the following working procedures:
(1) dehydrating, namely removing water from the raw material;
(2) neutralizing, namely chemically treating the raw materials to make the pH value of the raw materials neutral;
(3) combing and unfolding fibers, namely combing and unfolding the spherical fibers in the raw materials into linear free bodies;
(4) mixing and coupling, namely adding a coupling agent and a first additive into the raw materials, and uniformly stirring to combine and couple the fibers in the raw materials with the first additive;
(5) performing condensation reaction, namely adding a second additive into the combined and coupled raw materials, and uniformly stirring to condense and solidify the second additive and fibers in the raw materials;
(6) pressurizing, densifying and curing, namely pressurizing the coagulated and cured raw materials in a mold to densify and mold the raw materials, and removing the coupling agent;
(7) demolding and drying, namely demolding and drying the densely formed product;
in the step (4), in the mixing and coupling, the first additive is phenolic resin, and the coupling agent is absolute ethyl alcohol, and the weight ratio is as follows: the absolute ethylalcohol accounts for 15-25% of the weight of the raw material, the balance is a mixture of phenolic resin and the raw material, wherein the phenolic resin accounts for 3-9% of the weight of the mixture, and the temperature is 37-90 ℃ during stirring;
in the coagulation reaction in the step (5), the weight of the second additive is 2.5-5.5% of the total weight of the mixture, and the second additive comprises the following components in percentage by weight of the second additive:
25-35% of terephthalic acid dibutyrate and 3-7% of ethylenediamine
The rest of the epoxy resin is added to 100 percent,
while stirring, the temperature was maintained at 80-120 ℃.
2. The method for manufacturing the plastic-dimensional board as claimed in claim 1, wherein the method comprises the following steps: in the step (6), the pressurizing pressure is 3-4MPa and the holding temperature is 80-120 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001030108A CN1174843C (en) | 2000-02-25 | 2000-02-25 | Plastic-fiber board making process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001030108A CN1174843C (en) | 2000-02-25 | 2000-02-25 | Plastic-fiber board making process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1310079A CN1310079A (en) | 2001-08-29 |
| CN1174843C true CN1174843C (en) | 2004-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001030108A Expired - Fee Related CN1174843C (en) | 2000-02-25 | 2000-02-25 | Plastic-fiber board making process |
Country Status (1)
| Country | Link |
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| CN (1) | CN1174843C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101745986B (en) * | 2008-12-22 | 2012-05-30 | 财团法人工业技术研究院 | Composite material of paper slag sludge and inorganic polymers and the preparation method thereof |
| CN102849938A (en) * | 2012-07-09 | 2013-01-02 | 江苏富星新材料科技有限公司 | Production method of slurry slag thermal insulation board |
| CN109384960A (en) * | 2017-08-08 | 2019-02-26 | 贵州美人芋农业发展有限公司 | Production method for making the banana dasheen raw material and force fit plate of force fit plate |
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2000
- 2000-02-25 CN CNB001030108A patent/CN1174843C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1310079A (en) | 2001-08-29 |
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