CN109732736B - Composite preparation process of stable non-permeable wood and wood-plastic product - Google Patents
Composite preparation process of stable non-permeable wood and wood-plastic product Download PDFInfo
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Abstract
The invention aims to disclose the field of preparation of a wood and wood plastic composite product, in particular to a composite preparation process of stable non-permeable wood and wood plastic product, which mainly comprises the following steps: s1, preparing a binder, S2, preparing a wood product, S3, preparing a wood-plastic product, S4, preparing a mold, S5, performing injection molding, S6, performing composite molding, S7, paving a thin sheet, S8 and a fireproof coating; the wood-plastic and wood composite product obtained by the invention has no permeation after being firmly bonded between the adhesion layers and can be permanently bonded; not only save raw materials price, but also strengthen the structural firmness of woodwork, its adaptable four seasons that does not have the permeability characteristic change, do not receive damp weather influence woodwork quality, consequently the range of application is wide, and the cost is not high, has used the raw and other materials that are difficult to recycle rationally simultaneously, promotes environmental resource environmental protection rational utilization, has both protected environmental resource, also provides corrosion-resistant, resistant and stable, fire prevention, prevention of seepage and the wooden board of damp proof of structure for masses.
Description
Technical Field
The invention relates to the field of preparation of wood and wood plastic composite products, in particular to a composite preparation process of stable non-permeable wood and wood plastic products.
Background
At present, in common wooden products, in order to save resources and cost, many wooden furniture adopt composite boards formed by bonding wood and wood plastic, but the existing composite boards are poor in durability, on one hand, the composite boards are easy to degum and cause structural layers to be separated after long-time use, so that the composite boards lose strength and stability required by use, on the other hand, the composite boards are affected by weather in four seasons, the bonding capability between the structural board layers of the composite boards is weakened when wet south wind comes, and the bonding agent permeates into the surface layers of the wood boards or the wood-plastic boards, so that the use quality of the wood boards or the wood-plastic boards is seriously affected by glue permeation and moisture, the composite boards cannot be resistant to weather and moisture, and the service life is further shortened; in addition, if the general wood and wood plastic are not well selected, the process is not careful, the defects of warping, deformation and the like easily exist, the composite board is unstable to use, for example, the composite board is easy to be heated and deformed in summer when the climate changes, the quality of the board is easy to be damaged by moisture in a south wind, and comprehensively, the use process cannot be safely guaranteed.
Disclosure of Invention
In order to solve the problems, the invention aims to disclose the field of preparation of wood and wood plastic composite products, and particularly relates to a composite preparation process of stable and non-permeable wood and wood plastic products.
In order to achieve the purpose, the invention adopts the technical scheme that: a composite preparation process for firm non-permeable wood and wood-plastic products is characterized by mainly comprising the following steps:
s1, preparing a binder:
the main raw material components are as follows: 22.3 parts of polyformaldehyde resin, 16.4 parts of polyacrylamide emulsifier, 8.5 parts of epoxy resin, 3.9 parts of white latex, 8.7 parts of curing agent, 0.89 part of cellulase, 0.76 part of talcum powder, 8.1 parts of modified wood ash, 2.9 parts of dimethyl silicone oil, 0.45 part of ammonium sulfate, 3.3 parts of barium stearate, 2.81 parts of anion powder, 3.1 parts of polyvinyl alcohol, 0.6 part of vinyl acetate, 0.8 part of butyl acrylate and 4.1 parts of polyurethane prepolymer; the components are sequentially mixed and reacted to prepare the binder for preparing and cementing the wood plastic and the wood board;
s2, preparing a wood product:
the main raw materials are as follows: 27-42% of log, 38-47% of residual wood chips, 12-26% of waste rotten wood, 0.5-6% of natural resin and 5-12% of binder;
firstly, selecting rubber logs as logs and cutting the logs into plate shapes to obtain spare wood I, then fully crushing residual wood chips and waste rotten wood as raw materials collected after processing to form mixed crushed materials, and finally mixing and stirring the mixed crushed materials, natural resin and a binder and fully fusing the mixed crushed materials under a heating condition to obtain spare wood II;
s3, preparing a wood-plastic product:
the main raw materials are as follows: 2-10% of waste paper, 3-11% of foaming waste, 23-30% of polymer plastic, 21-29% of natural fiber, 30-40% of wood residue and 8-16% of binder;
firstly, grinding waste paper mixed liquid into waste paper pulp, then heating, mixing and grinding foaming waste and macromolecular plastics into mixed crushed materials, grinding wood residues into wood powder, then mixing and stirring the waste paper pulp, the mixed crushed materials, the wood powder and natural fibers, injecting a binder and continuously stirring to obtain a spare material III;
s4, preparing a mold:
preparing a wood forming mold and a wood-plastic forming mold, wherein the bottom surface of a mold cavity of the wood forming mold is provided with a honeycomb surface, and the bottom surface of the mold cavity of the wood-plastic forming mold is provided with a protruding surface attached to the honeycomb surface;
s5, injection molding:
paving a second spare wood on the bottom of the wood forming die in a thin layer, then paving blocky first spare wood on the surface of the thin layer at intervals, filling the top surface with the second spare wood, and heating at intervals in three time periods to obtain a wood product; finally, filling the standby material III into a wood-plastic forming die, and heating at intervals in three time periods to obtain a wood-plastic product; the heated wood products and wood-plastic products are in a semi-consolidation state within 2-4 hours after being cooled;
s6, composite molding:
demoulding and taking out the semi-consolidated wood product and the wood-plastic product, quickly injecting a binder with the heating temperature of 56 ℃ into the honeycomb notches on the surfaces of the semi-consolidated wood product and the wood-plastic product, then jointing the wood product and the wood-plastic product from the honeycomb surface, irradiating for 12-28 minutes by adopting laser, and then carrying out pressure composite molding;
s7, stamping shallow pores from the other surface of the wood product and the wood-plastic product after the wood product and the wood-plastic product are compounded, laying a layer of adhesive, and respectively compounding and adhering 0.8-1.2mm wood-plastic product sheets and wood product sheets on the surfaces of the wood product and the wood-plastic product after the adhesive permeates the pores; obtaining a four-layer structure composite product;
and S8, coating a fireproof coating on the surface of the composite product, and drying to obtain a finished product of the composite product.
The raw wood of the wood product prepared in the step S2 is cherry wood, black walnut or pine wood.
The wood slag of the wood-plastic product prepared in the step S3 is single wood slag or mixed wood slag in white rubber, red rubber, white waxwood, beech or water ash.
In the step S5, the thickness of the first wood piece is 2-4mm, the thickness of the second wood piece is 5-14mm, and the two wood pieces are in a surrounding assembly structure; the thickness of the spare material III is 4-12 mm.
In the step S5, the three time interval heating includes first heating at 110-125 deg.C, standing for 3.5h, heating at 80-94 deg.C, standing for 2.5h, heating at 55-61 deg.C, and finally cooling at low temperature.
The preparation process adopts equipment which mainly comprises a stirrer, a grinder, a cold press and a hot press.
In step S6, the method further includes, on the basis of the joint connection of the wood product and the wood-plastic product: and (3) carrying out impregnation treatment on the integrally connected semi-consolidated products.
In the steps S6-S7, when the composite adhesion is carried out, the pressure of the press-bonding molding is 86-98MPa, and the temperature is changed from the condition of heating at 78-90 ℃ to the condition of low-temperature cooling at high speed.
The invention has the beneficial effects that: the invention adopts a simple and easy-to-operate preparation process to finish the composite product with super-strong stability, and the obtained wood-plastic and wood composite product has no permeation after being firmly bonded between the adhesion layers and can be permanently bonded; the composite structure is used for the wooden products, so that the price of raw materials is saved, the structural firmness of the wooden products is enhanced, the non-permeability characteristic of the composite structure can adapt to the change of four seasons, and the quality of the wooden products is not influenced by humid weather.
Detailed Description
The following detailed description of the embodiments of the invention:
a composite preparation process for firm non-permeable wood and wood-plastic products is characterized by mainly comprising the following steps:
s1, preparing a binder:
the main raw material components are as follows: 22.3 parts of polyformaldehyde resin, 16.4 parts of polyacrylamide emulsifier, 8.5 parts of epoxy resin, 3.9 parts of white latex, 8.7 parts of curing agent, 0.89 part of cellulase, 0.76 part of talcum powder, 8.1 parts of modified wood ash, 2.9 parts of dimethyl silicone oil, 0.45 part of ammonium sulfate, 3.3 parts of barium stearate, 2.81 parts of anion powder, 3.1 parts of polyvinyl alcohol, 0.6 part of vinyl acetate, 0.8 part of butyl acrylate and 4.1 parts of polyurethane prepolymer; the components are sequentially mixed and reacted to prepare the binder for preparing and cementing the wood plastic and the wood board;
s2, preparing a wood product:
the main raw materials are as follows: 27-42% of log, 38-47% of residual wood chips, 12-26% of waste rotten wood, 0.5-6% of natural resin and 5-12% of binder;
firstly, selecting rubber logs as logs and cutting the logs into plate shapes to obtain spare wood I, then fully crushing residual wood chips and waste rotten wood as raw materials collected after processing to form mixed crushed materials, and finally mixing and stirring the mixed crushed materials with natural resin, a binder and liquid and fully fusing the mixed crushed materials under a heating condition to obtain spare wood II; at the moment, the water content of the second standby timber is 28-32%; the raw wood of the wood product prepared in the step S2 is cherry wood, black walnut or pine wood;
s3, preparing a wood-plastic product:
the main raw materials are as follows: 2-10% of waste paper, 3-11% of foaming waste, 23-30% of polymer plastic, 21-29% of natural fiber, 30-40% of wood residue and 8-16% of binder;
firstly, grinding waste paper mixed liquid into waste paper pulp, then heating, mixing and grinding foaming waste and macromolecular plastics into mixed crushed materials, grinding wood residues into wood powder, then mixing and stirring the waste paper pulp, the mixed crushed materials, the wood powder and natural fibers, injecting a binder and continuously stirring to obtain a spare material III; the water content of the standby material III is 25-29%, and the wood residues of the wood-plastic product prepared in the step S3 are single wood residues or mixed wood residues in white rubber, red rubber, white waxwood, beech or water ash;
s4, preparing a mold:
preparing a wood forming mold and a wood-plastic forming mold, wherein the bottom surface of a mold cavity of the wood forming mold is provided with a honeycomb surface, and the bottom surface of the mold cavity of the wood-plastic forming mold is provided with a protruding surface attached to the honeycomb surface;
s5, injection molding:
paving a second spare wood on the bottom of the wood forming die in a thin layer, then paving blocky first spare wood on the surface of the thin layer at intervals, filling the top surface with the second spare wood, and heating at intervals in three time periods to obtain a wood product; finally, filling the standby material III into a wood-plastic forming die, and heating at intervals in three time periods to obtain a wood-plastic product; the heated wood products and wood-plastic products are in a semi-consolidation state within 2-4 hours after being cooled; in the step S5, the thickness of the first wood piece is 2-4mm, the thickness of the second wood piece is 5-14mm, and the two wood pieces are in a surrounding assembly structure; the thickness of the standby material III is 4-12 mm; in the step S5, the three time interval heating includes heating at 110-125 deg.C for the first time, standing for 3.5h, heating at 80-94 deg.C for 2.5h, heating at 55-61 deg.C for the second time, and finally cooling at low temperature;
s6, composite molding:
demoulding and taking out the semi-consolidated wood product and the wood-plastic product, quickly injecting a binder with the heating temperature of 56 ℃ into the honeycomb notches on the surfaces of the semi-consolidated wood product and the wood-plastic product, then jointing the wood product and the wood-plastic product from the honeycomb surface, irradiating for 12-28 minutes by adopting laser, and then carrying out pressure composite molding; in step S6, the method further includes, on the basis of the joint connection of the wood product and the wood-plastic product: dipping the integrally connected semi-solidified product, wherein the semi-solidified product can be placed in an oil pool for dipping for 4-4.8 hours, and then laser irradiation is carried out after dipping;
s7, stamping shallow pores from the other surface of the wood product and the wood-plastic product after the wood product and the wood-plastic product are compounded, laying a layer of adhesive, and respectively compounding and adhering 0.8-1.2mm wood-plastic product sheets and wood product sheets on the surfaces of the wood product and the wood-plastic product after the adhesive permeates the pores; obtaining a four-layer structure composite product; in the steps S6-S7, when composite adhesion is carried out, the pressure of the press-fit molding is 86-98MPa, and the temperature is changed from the condition of heating at 78-90 ℃ to the condition of low-temperature cooling;
s8, coating a fireproof coating on the surface of the composite product, drying to obtain a composite product finished product, and performing surface treatment such as painting and sanding to form a smooth and attractive surface; the preparation process adopts equipment which mainly comprises a stirrer, a grinder, a cold press and a hot press.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, and those skilled in the art may make modifications and variations within the spirit of the present invention, and all modifications, equivalents and modifications of the above embodiments according to the technical spirit of the present invention are within the scope of the present invention.
Claims (8)
1. A composite preparation process for firm non-permeable wood and wood-plastic products is characterized by mainly comprising the following steps:
s1, preparing a binder:
the main raw material components are as follows: 22.3 parts of polyformaldehyde resin, 16.4 parts of polyacrylamide emulsifier, 8.5 parts of epoxy resin, 3.9 parts of white latex, 8.7 parts of curing agent, 0.89 part of cellulase, 0.76 part of talcum powder, 8.1 parts of modified wood ash, 2.9 parts of dimethyl silicone oil, 0.45 part of ammonium sulfate, 3.3 parts of barium stearate, 2.81 parts of anion powder, 3.1 parts of polyvinyl alcohol, 0.6 part of vinyl acetate, 0.8 part of butyl acrylate and 4.1 parts of polyurethane prepolymer; the components are sequentially mixed and reacted to prepare the binder for preparing and cementing the wood plastic and the wood board;
s2, preparing a wood product:
the main raw materials are as follows: 27-42% of log, 38-47% of residual wood chips, 12-26% of waste rotten wood, 0.5-6% of natural resin and 5-12% of binder;
firstly, selecting rubber logs as logs and cutting the logs into plate shapes to obtain spare wood I, then fully crushing residual wood chips and waste rotten wood as raw materials collected after processing to form mixed crushed materials, and finally mixing and stirring the mixed crushed materials, natural resin and a binder and fully fusing the mixed crushed materials under a heating condition to obtain spare wood II;
s3, preparing a wood-plastic product:
the main raw materials are as follows: 2-10% of waste paper, 3-11% of foaming waste, 23-30% of polymer plastic, 21-29% of natural fiber, 30-40% of wood residue and 8-16% of binder;
firstly, grinding waste paper mixed liquid into waste paper pulp, then heating, mixing and grinding foaming waste and macromolecular plastics into mixed crushed materials, grinding wood residues into wood powder, then mixing and stirring the waste paper pulp, the mixed crushed materials, the wood powder and natural fibers, injecting a binder and continuously stirring to obtain a spare material III;
s4, preparing a mold:
preparing a wood forming mold and a wood-plastic forming mold, wherein the bottom surface of a mold cavity of the wood forming mold is provided with a honeycomb surface, and the bottom surface of the mold cavity of the wood-plastic forming mold is provided with a protruding surface attached to the honeycomb surface;
s5, injection molding:
paving a second spare wood on the bottom of the wood forming die in a thin layer, then paving blocky first spare wood on the surface of the thin layer at intervals, filling the top surface with the second spare wood, and heating at intervals in three time periods to obtain a wood product; finally, filling the standby material III into a wood-plastic forming die, and heating at intervals in three time periods to obtain a wood-plastic product; the heated wood products and wood-plastic products are in a semi-consolidation state within 2-4 hours after being cooled;
s6, composite molding:
demoulding and taking out the semi-consolidated wood product and the wood-plastic product, quickly injecting a binder with the heating temperature of 56 ℃ into the honeycomb notches on the surfaces of the semi-consolidated wood product and the wood-plastic product, then jointing the wood product and the wood-plastic product from the honeycomb surface, irradiating for 12-28 minutes by adopting laser, and then carrying out pressure composite molding;
s7, stamping shallow pores from the other surface of the wood product and the wood-plastic product after the wood product and the wood-plastic product are compounded, laying a layer of adhesive, and respectively compounding and adhering 0.8-1.2mm wood-plastic product sheets and wood product sheets on the surfaces of the wood product and the wood-plastic product after the adhesive permeates the pores; obtaining a four-layer structure composite product;
and S8, coating a fireproof coating on the surface of the composite product, and drying to obtain a finished product of the composite product.
2. The composite manufacturing process of firm and non-permeable wood and wood-plastic product according to claim 1, wherein the raw wood of the wood product manufactured in step S2 is cherry, black walnut or pine.
3. The composite preparation process of firm and non-permeable wood and wood-plastic product according to claim 1, wherein the wood slag of step S3 for preparing wood-plastic product is single wood slag or mixed wood slag of white oak, red oak, white waxwood, beech or ash.
4. The composite preparation process of firm and non-permeable wood and wood-plastic product according to claim 1, wherein in step S5, the thickness of the first wood is 2-4mm, the thickness of the second wood is 5-14mm, and the two are in surrounding assembly structure; the thickness of the spare material III is 4-12 mm.
5. The composite preparation process of firm non-permeable wood and wood-plastic product according to claim 1, wherein in the step S5, the three time interval heating comprises first heating at 110-125 ℃, standing for 3.5h, then heating at 80-94 ℃, standing for 2.5h, heating at 55-61 ℃, and finally cooling at low temperature.
6. The composite preparation process of firm non-permeable wood and wood-plastic products according to claim 1, characterized in that the preparation process adopts equipment mainly comprising a stirrer, a grinder, a cold press and a hot press.
7. The composite preparation process of firm and non-permeable wood and wood-plastic product according to claim 1, wherein in the step S6, on the basis of the joint connection of the wood product and the wood-plastic product, the composite preparation process further comprises the steps of: and (3) carrying out impregnation treatment on the integrally connected semi-consolidated products.
8. The composite preparation process of firm and non-permeable wood and wood-plastic product according to claim 1, wherein in the step S6-S7, when the composite adhesion is carried out, the pressure of the press-fit molding is 86-98MPa, and the temperature is changed from 78-90 ℃ under the heating condition to the low-temperature cooling condition at high speed.
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| GB2622567A (en) * | 2022-07-28 | 2024-03-27 | Solomon & Wu Ltd | A method of manufacturing a composite material |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1593870A (en) * | 2003-09-08 | 2005-03-16 | 徐凌秀 | Manufacturing equipment for wood-plastic/foam composite wall section bar |
| CN101138857A (en) * | 2007-10-23 | 2008-03-12 | 孔繁诚 | Wood plastic plank stuff production technology and equipment thereof |
| CN102514143A (en) * | 2011-12-06 | 2012-06-27 | 陈佩玲 | Manufacturing method of wood plastic product |
| CN102581909A (en) * | 2012-03-06 | 2012-07-18 | 浙江农林大学 | Production method for stable solid wood-plastic composite floor board |
| CN205364115U (en) * | 2016-02-16 | 2016-07-06 | 温州市艺美建筑装饰工程有限公司 | High strength wood -plastic composite board |
| CN106675073A (en) * | 2017-01-12 | 2017-05-17 | 宁波朴锐环保科技有限公司 | Crushed wood aggregate/spinning waste/plastic waste compound molded product and manufacturing method thereof |
| CN207954898U (en) * | 2018-01-08 | 2018-10-12 | 广州高朗环保科技有限公司 | A kind of wood plastic product and timber multi-layer compound structure plank |
-
2018
- 2018-12-29 CN CN201811642790.8A patent/CN109732736B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1593870A (en) * | 2003-09-08 | 2005-03-16 | 徐凌秀 | Manufacturing equipment for wood-plastic/foam composite wall section bar |
| CN101138857A (en) * | 2007-10-23 | 2008-03-12 | 孔繁诚 | Wood plastic plank stuff production technology and equipment thereof |
| CN102514143A (en) * | 2011-12-06 | 2012-06-27 | 陈佩玲 | Manufacturing method of wood plastic product |
| CN102581909A (en) * | 2012-03-06 | 2012-07-18 | 浙江农林大学 | Production method for stable solid wood-plastic composite floor board |
| CN205364115U (en) * | 2016-02-16 | 2016-07-06 | 温州市艺美建筑装饰工程有限公司 | High strength wood -plastic composite board |
| CN106675073A (en) * | 2017-01-12 | 2017-05-17 | 宁波朴锐环保科技有限公司 | Crushed wood aggregate/spinning waste/plastic waste compound molded product and manufacturing method thereof |
| CN207954898U (en) * | 2018-01-08 | 2018-10-12 | 广州高朗环保科技有限公司 | A kind of wood plastic product and timber multi-layer compound structure plank |
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