CN110948625A - Waterproof agent for artificial board and application process thereof - Google Patents
Waterproof agent for artificial board and application process thereof Download PDFInfo
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- CN110948625A CN110948625A CN201911203590.7A CN201911203590A CN110948625A CN 110948625 A CN110948625 A CN 110948625A CN 201911203590 A CN201911203590 A CN 201911203590A CN 110948625 A CN110948625 A CN 110948625A
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- waterproof agent
- waterproof
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- artificial boards
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/52—Impregnating agents containing mixtures of inorganic and organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/12—Impregnating by coating the surface of the wood with an impregnating paste
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K2240/00—Purpose of the treatment
- B27K2240/70—Hydrophobation treatment
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
Abstract
The invention belongs to the technical field of chemical additives, relates to a waterproof agent, and particularly relates to a waterproof agent for an artificial board and an application process thereof. A waterproof agent for artificial boards is characterized by comprising the following components in parts by mass: 1-20 parts of lithium silicate, 1-20 parts of an organosilicon waterproof agent, 1-20 parts of a paraffin microcapsule waterproof agent, 0-20 parts of anionic polyacrylamide, 0-20 parts of a cationic starch solution, 0-20 parts of dispersed rosin size and 0-20 parts of sodium polystyrene sulfonate. The waterproof agent disclosed by the invention has a synergistic effect, can achieve a good waterproof effect under the condition of less application amount by matching with a special application process, has less influence on the physical and mechanical properties of a plate when the application amount is increased, can improve the waterproof property of the plate by improving the application amount of the waterproof agent, and overcomes the defect of using pure paraffin as the waterproof agent.
Description
Technical Field
The invention belongs to the technical field of chemical additives, relates to a waterproof agent, and particularly relates to a waterproof agent for an artificial board and an application process thereof.
Background
With the increasing aggravation of the problem of wood resource shortage worldwide, the production of artificial boards by using waste materials such as fine brushwood, urban landscape trees and the like as raw materials becomes one of the main ways for solving the contradiction between supply and demand of wood in all countries of the world, and the artificial boards are widely applied to indoor and outdoor decoration and furniture due to good physical and mechanical properties and high efficiency utilization rate. With the rapid development of the artificial board industry, the yield and variety of products are increasing, and the application range is gradually expanded, so that the requirements on various physical mechanical properties, especially the waterproof property of the artificial board are higher and higher. As is known, artificial boards made of plant fibers still have porous joints, which deform, expand and weaken after absorbing moisture and water, thereby affecting the application range and service life of the artificial boards. In order to reduce the moisture absorption and water absorption of the artificial board and improve the waterproof effect, hydrophobic substances such as paraffin, waterproof adhesives, mixed waterproof agents and the like must be added in the production process of the artificial board, which is a so-called waterproof treatment technology.
At present, pure paraffin is mainly used as a waterproof material in the production of artificial boards. Paraffin is a solid crystal extracted from petroleum, belongs to a plurality of hydrocarbons with extremely inactive properties, namely a mixture of hydrocarbons with different molecular weights, mainly consists of normal paraffins, and also contains some solid isoparaffins, naphthenes and small amount of aromatic hydrocarbons. The carbon number of the paraffin wax is generally 22-36, the molecular weight is 30-450, and the boiling point is 300-550 ℃. The main performance indexes of the paraffin comprise melting point, oil content, chroma, water-soluble acid, alkali and the like, the brands of the paraffin are divided by the melting point, and the number of the semi-refined paraffin of 54-58 is commonly used in the production of the artificial board at present. Paraffin is used as a waterproof material, and belongs to a physical phenomenon of blocking gaps among fibers in terms of a waterproof principle, the physical isolation can improve the waterproof performance of an artificial board, but is not favorable for the bonding firmness between the fibers, so that in the production of medium (high) density fiberboards, hard fiberboards or shaving boards, paraffin is added or the dosage of the paraffin is increased to influence other physical and mechanical properties of products, particularly the bonding strength of the products is reduced; meanwhile, the paraffin wax has low electrical conductivity, tensile strength, bonding force and other properties, and is added into the fiber or wood chip to have weak adsorption effect, so that the paraffin wax is often unevenly distributed in the board.
The invention mainly overcomes the defect of pure paraffin as the waterproof agent for the artificial board, prepares a novel waterproof agent for the artificial board, and is matched with a special application process.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to disclose a waterproof agent for artificial boards.
A waterproof agent for artificial boards comprises the following components in parts by mass:
1-20 parts of lithium silicate, preferably 10 parts;
1-20 parts of an organosilicon waterproofing agent, preferably 10 parts;
1-20 parts of paraffin microcapsule waterproof agent, preferably 10 parts;
0-20 parts of anionic polyacrylamide, preferably 2 parts;
0-20 parts of cationic starch solution, preferably 2 parts;
0-20 parts of dispersed rosin size, preferably 2 parts;
0-20 parts of sodium polystyrene sulfonate, preferably 2 parts.
The invention discloses a waterproof agent for artificial boards, which comprises the following components: the waterproof agent comprises one or more of lithium silicate solution, organosilicon waterproof agent, paraffin microcapsule waterproof agent, anionic polyacrylamide, cationic starch solution, dispersed rosin size and sodium polystyrene sulfonate, wherein the lithium silicate and the organosilicon waterproof agent can react with the surface of fiber and wood chip for artificial boards to form a film, the formed film can play a waterproof role on one hand and can play a bonding role on the other hand, and the waterproof agent belongs to a reactive waterproof agent. The paraffin microcapsule waterproof agent has good fluidity, fine particles, good diffusivity and uniformity, and can form a certain mechanical strength at a wax-water interface, so that the strength of an interface film is enhanced, the waterproof effect can be improved, and the physical and mechanical properties of the board are not influenced. The retention rate of other waterproof agents can be improved by adding a certain proportion of anionic polyacrylamide emulsion and cationic starch solution, so that the waterproof effect can be improved. The dispersed rosin size with a certain proportion is added, and the synergistic effect can be generated with the organic silicon waterproof agent, so that the waterproof effect of the plate is improved to the maximum extent. The sodium polystyrene sulfonate is added in a certain proportion, so that a plurality of water-proofing agents can be promoted to form a dispersion liquid with better dispersion effect under the stirring or high-speed stirring condition. The special process of applying is cooperated, and 3 mixing processes are adopted to realize continuous production, the stirring speed is gradually increased, so that the particle size of different mixed waterproofing agents is smaller, the dispersion effect is better, and the spraying on the surface of the fiber is more uniform.
Still another object of the present invention is to disclose the application process of the above water repellent.
The waterproof agent application process comprises the following steps:
(1) putting the components of the waterproof agent into a premixing tank A in proportion, and stirring for 20-30 min at the stirring speed of 600-1000 r/min;
(2) conveying the materials in the premixing tank A into a mixing tank B through a pipeline system, wherein the stirring speed of the mixing tank B is 1800-2500 r/min, and stirring for 20-30 min;
(3) conveying the materials in the premixing tank B into a mixing pipe C through a pipeline system, wherein the stirring speed of the mixing pipe C is 6000-8000 r/min, and stirring is carried out for 5-10 min;
(4) conveying the materials in the mixing tank C to a storage tank D for later use;
(5) waterproofing agent evenly spouts on the fibre surface at glueing process in storage tank D, and according to fibre raw materials difference, with the oven-dry fibre volume, its application volume 4 ~ 15kg/m double-row high-speed crops.
Advantageous effects
The waterproof agent disclosed by the invention has a synergistic effect, can achieve a good waterproof effect under the condition of less application amount by matching with a special application process, has less influence on the physical and mechanical properties of a plate when the application amount is increased, can improve the waterproof property of the plate by improving the application amount of the waterproof agent, and overcomes the defect of using pure paraffin as the waterproof agent.
Detailed Description
The present invention will be described in detail below with reference to examples to enable those skilled in the art to better understand the present invention, but the present invention is not limited to the following examples.
Example 1
The waterproof agent comprises the following components in parts by mass: 10 parts of lithium silicate solution, 10 parts of organosilicon waterproofing agent, 10 parts of paraffin microcapsule waterproofing agent, 2 parts of anionic polyacrylamide, 2 parts of cationic starch solution, 2 parts of dispersed rosin size and 2 parts of sodium polystyrene sulfonate.
The water repellent is applied by the steps of:
(1) conveying the components of the waterproof agent into a premixing tank A through a static mixer according to a certain proportion, wherein the stirring speed of the premixing tank A is 1000 revolutions per minute, and the stirring time is 20 minutes;
(2) conveying the materials in the premixing tank A into a mixing tank B through a pipeline system, wherein the stirring speed of the mixing tank B is 2500 rpm, and stirring for 20 minutes;
(3) the materials in the premixing tank B are conveyed into a mixing pipe C through a pipeline system, and the stirring speed of the mixing pipe C is 8000 rpm, and the stirring time is 5 minutes;
(4) conveying the materials in the mixing tank C to a storage tank D for later use;
(5) and the waterproof agent in the storage tank D is uniformly sprayed on the surface of the fiber in the sizing process.
Taking a 9.7mmF4 star floor base material as an example, under the condition that the type, the application amount and the production process of the board are not changed, when the traditional waterproof agent process is adopted, namely 7kg/m of melted paraffin is applied, the 24h water absorption thickness expansion rate of the board is about 8.0 percent, and by adopting the technical scheme of the waterproof agent in the embodiment, the 24h water absorption thickness expansion rate of the board can reach about 5.5 percent, and the lifting amplitude exceeds 30 percent.
Example 2
The waterproof agent comprises the following components in parts by mass: 10 parts of lithium silicate solution, 20 parts of organosilicon waterproofing agent, 20 parts of paraffin microcapsule waterproofing agent, 2 parts of anionic polyacrylamide, 2 parts of cationic starch solution, 2 parts of dispersed rosin size and 1 part of sodium polystyrene sulfonate.
The water repellent is applied by the steps of:
(1) conveying the components of the waterproof agent into a premixing tank A through a static mixer according to a certain proportion, wherein the stirring speed of the premixing tank A is 800 r/min, and the stirring time is 20 min;
(2) the materials in the premixing tank A are conveyed into a mixing tank B through a pipeline system, and the mixing speed of the mixing tank B is 2000 rpm, and the mixing time is 30 minutes;
(3) the materials in the premixing tank B are conveyed into a mixing pipe C through a pipeline system, and the stirring speed of the mixing pipe C is 8000 rpm, and the stirring time is 5 minutes;
(4) conveying the materials in the mixing tank C to a storage tank D for later use;
(5) and the waterproof agent in the storage tank D is uniformly sprayed on the surface of the fiber in the sizing process.
Taking a 9.7mmF4 star floor base material as an example, under the condition that the type, the application amount and the production process of the board are not changed, when the traditional waterproof agent process is adopted, namely 7kg/m of melted paraffin is applied, the 24-hour water absorption thickness expansion rate of the board is about 8.0 percent, and by adopting the technical scheme of the waterproof agent in the embodiment, the 24-hour water absorption thickness expansion rate of the board can reach about 5.0 percent, and the lifting amplitude reaches 37.5 percent.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields are included in the scope of the present invention.
Claims (9)
1. A waterproof agent for artificial boards is characterized by comprising the following components in parts by mass: 1-20 parts of lithium silicate, 1-20 parts of an organosilicon waterproof agent, 1-20 parts of a paraffin microcapsule waterproof agent, 0-20 parts of anionic polyacrylamide, 0-20 parts of a cationic starch solution, 0-20 parts of dispersed rosin size and 0-20 parts of sodium polystyrene sulfonate.
2. The waterproofing agent for artificial boards according to claim 1, wherein: 10 parts of lithium silicate.
3. The waterproofing agent for artificial boards according to claim 1, wherein: 10 parts of the organosilicon waterproofing agent.
4. The waterproofing agent for artificial boards according to claim 1, wherein: 10 parts of a paraffin microcapsule waterproof agent.
5. The waterproofing agent for artificial boards according to claim 1, wherein: 2 parts of the anionic polyacrylamide.
6. The waterproofing agent for artificial boards according to claim 1, wherein: 2 parts of the cationic starch solution.
7. The waterproofing agent for artificial boards according to claim 1, wherein: and 2 parts of dispersed rosin size.
8. The waterproofing agent for artificial boards according to claim 1, wherein: and 2 parts of sodium polystyrene sulfonate.
9. A process for applying a waterproofing agent for artificial boards according to any of claims 1 to 8, comprising the steps of:
(1) putting the components of the waterproof agent into a premixing tank A in proportion, and stirring for 20-30 min at the stirring speed of 600-1000 r/min;
(2) conveying the materials in the premixing tank A into a mixing tank B through a pipeline system, wherein the stirring speed of the mixing tank B is 1800-2500 r/min, and stirring for 20-30 min;
(3) conveying the materials in the premixing tank B into a mixing pipe C through a pipeline system, wherein the stirring speed of the mixing pipe C is 6000-8000 r/min, and stirring is carried out for 5-10 min;
(4) conveying the materials in the mixing tank C to a storage tank D for later use;
(5) waterproofing agent evenly spouts on the fibre surface at glueing process in storage tank D, and according to fibre raw materials difference, with the oven-dry fibre volume, its application volume 4 ~ 15kg/m double-row high-speed crops.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911203590.7A CN110948625A (en) | 2019-11-29 | 2019-11-29 | Waterproof agent for artificial board and application process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911203590.7A CN110948625A (en) | 2019-11-29 | 2019-11-29 | Waterproof agent for artificial board and application process thereof |
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| Publication Number | Publication Date |
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| CN110948625A true CN110948625A (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911203590.7A Pending CN110948625A (en) | 2019-11-29 | 2019-11-29 | Waterproof agent for artificial board and application process thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3376144A (en) * | 1964-10-14 | 1968-04-02 | Chapman Chem Co | Wood preservative grease composition |
| CN1850601A (en) * | 2006-06-02 | 2006-10-25 | 东莞市黑马化工有限公司 | Method for preparing high modulus water-soluble potassium silicate and its use for wood processing |
| CN103341894A (en) * | 2013-07-22 | 2013-10-09 | 北京林业大学 | Paraffin-silane composite waterproofing agent and preparation method thereof |
| CN103561875A (en) * | 2011-07-11 | 2014-02-05 | 英派尔科技开发有限公司 | Methods and compositions for treating wood |
| CN103773253A (en) * | 2014-01-17 | 2014-05-07 | 中南林业科技大学 | Flame-retardant waterproof silicate wood adhesive and preparation method thereof |
| CN104029269A (en) * | 2014-06-20 | 2014-09-10 | 浙江省林业科学研究院 | Method for manufacturing bamboo particleboards through modification of hickory nut epicarp |
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2019
- 2019-11-29 CN CN201911203590.7A patent/CN110948625A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3376144A (en) * | 1964-10-14 | 1968-04-02 | Chapman Chem Co | Wood preservative grease composition |
| CN1850601A (en) * | 2006-06-02 | 2006-10-25 | 东莞市黑马化工有限公司 | Method for preparing high modulus water-soluble potassium silicate and its use for wood processing |
| CN103561875A (en) * | 2011-07-11 | 2014-02-05 | 英派尔科技开发有限公司 | Methods and compositions for treating wood |
| CN103341894A (en) * | 2013-07-22 | 2013-10-09 | 北京林业大学 | Paraffin-silane composite waterproofing agent and preparation method thereof |
| CN103773253A (en) * | 2014-01-17 | 2014-05-07 | 中南林业科技大学 | Flame-retardant waterproof silicate wood adhesive and preparation method thereof |
| CN104029269A (en) * | 2014-06-20 | 2014-09-10 | 浙江省林业科学研究院 | Method for manufacturing bamboo particleboards through modification of hickory nut epicarp |
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| 宋琳莹等: "反应型防水剂的制备及对中密度纤维板防水性能的评价", 《反应型防水剂的制备及对中密度纤维板防水性能的评价》 * |
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