CN106553247A - A kind of wood composite fire retardant and preparation method thereof - Google Patents
A kind of wood composite fire retardant and preparation method thereof Download PDFInfo
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- CN106553247A CN106553247A CN201611057190.6A CN201611057190A CN106553247A CN 106553247 A CN106553247 A CN 106553247A CN 201611057190 A CN201611057190 A CN 201611057190A CN 106553247 A CN106553247 A CN 106553247A
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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
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
-
- 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
- B27K2240/30—Fireproofing
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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)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The present invention relates to wood processing technique field, and in particular to a kind of wood composite fire retardant and preparation method thereof and the application in production flame-retardant plywood.A kind of wood composite fire retardant, including the raw material of following parts by weight：30 40 parts of 25 35 parts of tripolycyanamide, 5 15 parts of sodium dihydrogen phosphate, 0.1 0.5 parts of sodium hydroxide, 30 40 parts of Borax and boric acid.Act on cooperative flame retardant between each raw material of wood composite fire retardant of the present invention, with good flame retardation effect, low toxicity, the good and eco-friendly advantage of smoke-suppressing, and low price；The flame-retardant plywood prepared using the wood composite fire retardant of the present invention can significantly improve the fire resistance of flame-retardant plywood, can reach the requirement of national standard C level fire-protection rating；Its bonding strength and maximal destruction load all close to do not use the fire retardant process made by plywood.
Description
Technical field
The present invention relates to wood processing technique field, and in particular to a kind of wood composite fire retardant and preparation method thereof and should
With.
Background technology
In recent years, due to utilization timber that the mankind are excessive so that various famous and precious, big footpath level timber quantity are fewer and feweri,
Therefore the mankind are accomplished in several ways the comprehensive utilization of timber.The birth of wood-based plate, indicates timber processing modernization period
Beginning, make process from it is simple change log shapes and develop into improve wood property.People by planting artificial forest, from artificial
The timber for getting off is cut down in woods and makes various wood-based plates, people are met with this to famous and precious timber, the needs of big footpath level timber.
Timber makes wood-based plate, and it maintains good etc. the characteristic of the light of virgin wood, mechanical property, while and have breadth big, knot
Structure is good, easy construction；Dilation rate is low, dimensionally stable, and material is uniform compared with sawn timber, the advantages of be unlikely to deform cracking.
Wood-based plate is that, with timber or other non-wood plants as raw material, the certain machinings of Jing are separated into various unit materials
Afterwards, apply or do not apply the sheet material or pressing of adhesive and other additive pressings.Wood-based plate mainly includes gluing
The intensity and volume stability of plate, particieboard and fibre board three major types, wherein plywood is preferably, also wide in actual applications
It is general.Plywood is one of furniture, construction and decoration common used material.Wood-based plate is actually a kind of wood materials, is that ignition point is very low
Combustible, therefore usually need add fire retardant carry out flame treatment, the quality of fire retardant quality will affect wood-based plate
Fireproof effect.
In recent years, as plywood yield constantly increases and the awareness of the importance of fire prevention of people is being improved constantly, occur on market
Various fire retardants.Although fire retardant is relatively broad in the application of plywood, existing fire retardant still suffers from problems with：Resistance
Combustion DeGrain, relatively costly, resistance leachability and resistance to ag(e)ing be poor, it is big to the Effect on Mechanical Properties of plywood the problems such as.Cause
This, develops a kind of new fire retardant with high performance-price ratio and is very important.
The information for being disclosed in the background section is merely intended to increase the understanding of the general background to the present invention, and should not
When the prior art for being considered to recognize or imply the information structure in any form well known to persons skilled in the art.
The content of the invention
For the deficiencies in the prior art, it is an object of the invention to provide a kind of plywood fire retardant and preparation method thereof and
Application in production flame-retardant plywood.
The present invention provide technical scheme be：
A kind of wood composite fire retardant, including the raw material of following parts by weight：Tripolycyanamide 25-35 parts, sodium dihydrogen phosphate
5-15 parts, sodium hydroxide 0.1-0.5 parts, Borax 30-40 parts and boric acid 30-40 parts.
Preferably, described wood composite fire retardant, including the raw material of following parts by weight：25 parts of tripolycyanamide, phosphorus
40 parts of 10 parts of acid dihydride sodium, 0.3 part of sodium hydroxide, 35 parts of Borax and boric acid.
Present invention also offers the preparation method of described wood composite fire retardant, comprises the following steps：Weigh melamine
Amine 25-35 parts, sodium dihydrogen phosphate 5-15 parts, sodium hydroxide 0.1-0.5 parts, Borax 30-40 parts and boric acid 30-40 parts, respectively plus
Enter pulverizer and be crushed to 120-150 mesh, then each component is mixed, be eventually adding water, prepare wood of the mass concentration for 10-15%
Material composite flame-proof agent solution.
Compared with prior art, the present invention has the advantages that：
1. act on cooperative flame retardant between each raw material of wood composite fire retardant of the present invention, with good flame retardation effect, low
Poison, the good and eco-friendly advantage of smoke-suppressing, and low price.
2. the flame-retardant plywood for being prepared using the wood composite fire retardant of the present invention can significantly improve the resistance of flame-retardant plywood
Combustion performance, can reach the requirement of national standard C level fire-protection rating；Its bonding strength and maximal destruction load is not all close to using
The plywood made by fire retardant process.
Specific embodiment
The specific embodiment of the present invention is described in detail with reference to embodiment, it is to be understood that the guarantor of the present invention
Shield scope is not limited by specific embodiment.
Explicitly indicate that unless otherwise other, otherwise in entire disclosure and claims, term " including " or its change
Change such as "comprising" or " including " etc. and will be understood to comprise stated element or ingredient, and do not exclude other units
Part or other ingredients.
Embodiment 1：
A kind of wood composite fire retardant, including the raw material of following parts by weight：25 parts of tripolycyanamide, 5 parts of sodium dihydrogen phosphate,
30 parts of 0.1 part of sodium hydroxide, 30 parts of Borax and boric acid.
The preparation method of described wood composite fire retardant, comprises the following steps：Weigh 25 parts of tripolycyanamide, biphosphate
30 parts of 5 parts of sodium, 0.1 part of sodium hydroxide, 30 parts of Borax and boric acid, are separately added into pulverizer and are crushed to 120 mesh, then by each component
Mixing, is eventually adding water, prepares the wood composite retardant solution that mass concentration is 10%.
Application of the described wood composite fire retardant in production flame retardant fibre board, including following production stage：
(1) select that knot is few, the few veneer of defect clears up surface, moisture content is dried the veneers to for 8%, place into matter
Soak 24 hours in measuring the wood composite retardant solution that concentration is 10%, then take out and dry, then carried out with rolling dryer
It is dried, the moisture content for controlling veneer is 12%；
(2) modified urea-formaldehyde resin mediation glue will be applied through the two sides of the veneer after step (1) process, then will be aged 8min；
The preparation method of described modified urea-formaldehyde resin mediation glue is by 65 parts of modified urea-formaldehyde resin glues, 1.2 parts of NH4Cl and 9.5 part of faces
Powder, they are sufficiently mixed uniformly, and modified urea-formaldehyde resin mediation glue is obtained after standing 20min；Described modified urea-formaldehyde resin glue
It is that the formaldehyde in glue container is heated to into 35 DEG C, adds NaOH to adjust pH to 8.3, add the carbamide of formaldehyde quality 36%, rise
Temperature stops heating to 70 DEG C, makes temperature rise to naturally 85 DEG C, reacts 40min；Mass concentration is slowly added dropwise in 25min for 20%
Formic acid solution, the pH value of reactant liquor is adjusted to into 4.6, control response time 60min, 89 DEG C of temperature, with applying under the conditions of 30 DEG C
Four glasss of measure viscosity, determine 1 time every 5min, and terminal viscosity is controlled in 19s；The 2% of formaldehyde quality cross-linking agent is added, is stirred
After mixing 10min, the carbamide of formaldehyde quality 16.5% is subsequently adding, 83 DEG C of controlling reaction temperature, reaction 30min are cooled to 70 DEG C；
The carbamide of formaldehyde quality 20% is eventually adding, 30min is reacted, is cooled to less than 45 DEG C, PH to 8.5 is adjusted with NaOH, stir 10min
Sampling discharging, obtains modified urea-formaldehyde resin glue；
(3) veneer after step (2) process is carried out into assembly according to a conventional method, is then carried out at precompressed and hot pressing
Reason, obtains burr flame-retardant plywood；The technological parameter of the precompressed is：Squeeze time 70min, pressure 1.3MPa, temperature are normal
Temperature；The technological parameter of the hot pressing is：Hot pressing time 7min, pressure 1.4MPa, hot pressing temperature are 110 DEG C；
(4) the burr flame-retardant plywood that above-mentioned steps (3) are obtained is carried out into cutting edge, obtains specification flame-retardant plywood, finally
Sanding, facing are carried out to specification flame-retardant plywood, flame-retardant plywood is obtained.
Embodiment 2：
A kind of wood composite fire retardant, including the raw material of following parts by weight：35 parts of tripolycyanamide, sodium dihydrogen phosphate 15
Part, 0.5 part of sodium hydroxide, 40 parts of Borax and 40 parts of boric acid.
The preparation method of described wood composite fire retardant, comprises the following steps：Weigh 35 parts of tripolycyanamide, biphosphate
40 parts of 15 parts of sodium, 0.5 part of sodium hydroxide, 40 parts of Borax and boric acid, are separately added into pulverizer and are crushed to 150 mesh, then by each group
Divide mixing, be eventually adding water, prepare the wood composite retardant solution that mass concentration is 15%.
Application of the described wood composite fire retardant in production flame retardant fibre board, including following production stage：
(1) select that knot is few, the few veneer of defect clears up surface, moisture content is dried the veneers to for 10%, place into matter
Soak 24 hours in measuring the wood composite retardant solution that concentration is 15%, then take out and dry, then carried out with rolling dryer
It is dried, the moisture content for controlling veneer is 15%；
(2) modified urea-formaldehyde resin mediation glue will be applied through the two sides of the veneer after step (1) process, then will be aged 12min；
Described modified urea-formaldehyde resin reconcile glue preparation method be by 75 parts of modified urea-formaldehyde resin glues, 1.2 parts NH4Cl and 11.25 part
Flour, they are sufficiently mixed uniformly, and modified urea-formaldehyde resin mediation glue is obtained after standing 20min；Described modified urea-formaldehyde resin
Glue is that the formaldehyde in glue container is heated to 35 DEG C, adds NaOH to adjust pH to 8.5, adds the carbamide of formaldehyde quality 36%,
It is warming up to 70 DEG C and stops heating, make temperature rise to naturally 85-88 DEG C, reacts 40min；Quality is slowly added dropwise in 25-30min dense
The formic acid solution for 20% is spent, the pH value of reactant liquor 4.6 is adjusted to into, control response time 80min, 91 DEG C of temperature, in 30 DEG C of bars
With four glasss of measure viscosity are applied under part, determine 1 time every 10min, terminal viscosity is controlled in 20s；Add the 2% of formaldehyde quality
Cross-linking agent, after stirring 10min, is subsequently adding the carbamide of formaldehyde quality 16.5%, 85 DEG C of controlling reaction temperature, reaction 30min, drop
Temperature is to 70 DEG C；The carbamide of formaldehyde quality 20% is eventually adding, 30min is reacted, is cooled to less than 45 DEG C, PH is adjusted to 8.8 with NaOH,
Stirring 10min sampling dischargings, obtain modified urea-formaldehyde resin glue；
(3) veneer after step (2) process is carried out into assembly according to a conventional method, is then carried out at precompressed and hot pressing
Reason, obtains burr flame-retardant plywood；The technological parameter of the precompressed is：Squeeze time 90min, pressure 1.5MPa, temperature are normal
Temperature；The technological parameter of the hot pressing is：Hot pressing time 9min, pressure 1.6MPa, hot pressing temperature are 130 DEG C；
(4) the burr flame-retardant plywood that above-mentioned steps (3) are obtained is carried out into cutting edge, obtains specification flame-retardant plywood, finally
Sanding, facing are carried out to specification flame-retardant plywood, flame-retardant plywood is obtained.
Embodiment 3：
A kind of wood composite fire retardant, including the raw material of following parts by weight：30 parts of tripolycyanamide, sodium dihydrogen phosphate 10
Part, 0.3 part of sodium hydroxide, 35 parts of Borax and 35 parts of boric acid.
The preparation method of described wood composite fire retardant, comprises the following steps：Weigh 30 parts of tripolycyanamide, biphosphate
35 parts of 10 parts of sodium, 0.3 part of sodium hydroxide, 35 parts of Borax and boric acid, are separately added into pulverizer and are crushed to 140 mesh, then by each group
Divide mixing, be eventually adding water, prepare the wood composite retardant solution that mass concentration is 12%.
Application of the described wood composite fire retardant in production flame retardant fibre board, including following production stage：
(1) select that knot is few, the few veneer of defect clears up surface, moisture content is dried the veneers to for 9%, place into matter
Soak 24 hours in measuring the wood composite retardant solution that concentration is 12%, then take out and dry, then carried out with rolling dryer
It is dried, the moisture content for controlling veneer is 13%；
(2) modified urea-formaldehyde resin mediation glue will be applied through the two sides of the veneer after step (1) process, then will be aged 10min；
The preparation method of described modified urea-formaldehyde resin mediation glue is by 70 parts of modified urea-formaldehyde resin glues, 1.2 parts of NH4Cl and 10 part of faces
Powder, they are sufficiently mixed uniformly, and modified urea-formaldehyde resin mediation glue is obtained after standing 20min；Described modified urea-formaldehyde resin glue
It is that the formaldehyde in glue container is heated to into 35 DEG C, adds NaOH to adjust pH to 8.4, add the carbamide of formaldehyde quality 36%, rise
Temperature stops heating to 70 DEG C, makes temperature rise to naturally 86 DEG C, reacts 40min；Mass concentration is slowly added dropwise in 28min for 20%
Formic acid solution, the pH value of reactant liquor is adjusted to into 4.6, control response time 70min, 90 DEG C of temperature, with applying under the conditions of 30 DEG C
Four glasss of measure viscosity, determine 1 time every 8min, and terminal viscosity is controlled in 19s；The 2% of formaldehyde quality cross-linking agent is added, is stirred
After mixing 10min, the carbamide of formaldehyde quality 16.5% is subsequently adding, controlling reaction temperature 83-85 DEG C, reaction 30min are cooled to 70
℃；The carbamide of formaldehyde quality 20% is eventually adding, 30min is reacted, is cooled to less than 45 DEG C, PH to 8.6, stirring are adjusted with NaOH
10min sampling dischargings, obtain modified urea-formaldehyde resin glue；
(3) veneer after step (2) process is carried out into assembly according to a conventional method, is then carried out at precompressed and hot pressing
Reason, obtains burr composite flame-proof plywood；The technological parameter of the precompressed is：Squeeze time 80min, pressure 1.4MPa, temperature
For room temperature；The technological parameter of the hot pressing is：Hot pressing time 8min, pressure 1.5MPa, hot pressing temperature are 120 DEG C；
(4) the burr flame-retardant plywood that above-mentioned steps (3) are obtained is carried out into cutting edge, obtains specification flame-retardant plywood, finally
Sanding, facing are carried out to specification flame-retardant plywood, flame-retardant plywood is obtained.
Embodiment 4：The performance evaluation of the flame-retardant plywood prepared using wood composite fire retardant of the present invention
The performance measurement of the flame-retardant plywood that table 1 is prepared using plywood fire retardant of the present invention
Note：The plywood not add wood composite fire retardant is compareed, its preparation method is with embodiment 1-3.
As it can be seen from table 1 the oxygen index value that the present embodiment obtains flame-retardant plywood is all higher than 37%, hence it is evident that better than control
(not using plywood made by fire retardant process), the requirement of the C level fire-protection ratings that are up to state standards；The present embodiment obtains fire-retardant
The bonding strength and maximal destruction load of plywood be not all close to control (using plywood made by fire retardant process).
It is aforementioned to the present invention specific illustrative embodiment description be in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to above-mentioned teaching, much can be changed
And change.The purpose of selecting and describing the exemplary embodiment is that explaining that the certain principles and its reality of the present invention should
With so that those skilled in the art can realize and using the present invention a variety of exemplaries and
A variety of selections and change.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (3)
1. a kind of wood composite fire retardant, it is characterised in that including the raw material of following parts by weight：Tripolycyanamide 25-35 parts, phosphorus
Acid dihydride sodium 5-15 parts, sodium hydroxide 0.1-0.5 parts, Borax 30-40 parts and boric acid 30-40 parts.
2. wood composite fire retardant according to claim 1, it is characterised in that including the raw material of following parts by weight：Three
40 parts of 25 parts of poly cyanamid, 10 parts of sodium dihydrogen phosphate, 0.3 part of sodium hydroxide, 35 parts of Borax and boric acid.
3. the preparation method of wood composite fire retardant according to claim 1, it is characterised in that comprise the following steps：Claim
Take tripolycyanamide 25-35 parts, sodium dihydrogen phosphate 5-15 parts, sodium hydroxide 0.1-0.5 parts, Borax 30-40 parts and boric acid 30-40
Part, it is separately added into pulverizer and is crushed to 120-150 mesh, then each component is mixed, is eventually adding water, preparing mass concentration is
The wood composite retardant solution of 10-15%.
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| CN201611057190.6A CN106553247A (en) | 2016-11-26 | 2016-11-26 | A kind of wood composite fire retardant and preparation method thereof |
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| CN201611057190.6A CN106553247A (en) | 2016-11-26 | 2016-11-26 | A kind of wood composite fire retardant and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107471369A (en) * | 2017-09-19 | 2017-12-15 | 阜南县金威工艺品有限公司 | A kind of fire retardant suitable for willow material handicraft |
| CN108795318A (en) * | 2017-05-03 | 2018-11-13 | 贵港市鑫宏木业有限公司 | A kind of wood composite fire retardant and its preparation method and application |
| CN112757425A (en) * | 2020-12-29 | 2021-05-07 | 苏州佳固士新材料科技有限公司 | Water-based transparent wood flame retardant for inhibiting alburnia and preparation method and application thereof |
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