CN105751324A - Composite flame retardant and preparation method and application thereof - Google Patents

Composite flame retardant and preparation method and application thereof Download PDF

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Publication number
CN105751324A
CN105751324A CN201610103637.2A CN201610103637A CN105751324A CN 105751324 A CN105751324 A CN 105751324A CN 201610103637 A CN201610103637 A CN 201610103637A CN 105751324 A CN105751324 A CN 105751324A
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China
Prior art keywords
retardant
flame
parts
composite flame
formaldehyde
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CN201610103637.2A
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Chinese (zh)
Inventor
刁海林
李建能
邓城亨
蒋忠毅
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Guangxi University
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Guangxi University
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Priority to CN201610103637.2A priority Critical patent/CN105751324A/en
Publication of CN105751324A publication Critical patent/CN105751324A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27DWORKING VENEER OR PLYWOOD
    • B27D1/00Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/04Joining 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
    • B27D1/08Manufacture of shaped articles; Presses specially designed therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02Non-macromolecular additives
    • C09J11/04Non-macromolecular additives inorganic
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J161/00Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
    • C09J161/20Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C09J161/32Modified amine-aldehyde condensates
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B2037/1269Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives multi-component adhesive

Abstract

The invention relates to the technical field of wood processing, in particular to a composite flame retardant, a preparation method thereof and application for producing flame retarding plywood.The composite flame retardant is prepared from, by weight, 10-16 parts of ammonium sulfate, 2-8 parts of diammonium hydrogen phosphate, 1-5 parts of boric acid, 1-5 parts of zinc borate, 1-4 parts of magnesium oxide, 1-3 parts of aluminum sulfate and 2-8 parts of aluminum hydroxide.The composite flame retardant has the advantages that all the raw materials have the synergistic flame retardant effect, the flame retardant effect is good, toxicity is low, smoke suppression performance is good, and the composite flame retardant is environmentally friendly, and the price is low; the flame retarding plywood prepared through the composite flame retardant can remarkably improve the flame retardant performance of the flame retarding plywood, and the requirement for the national standard waterproof level-C or above can be met; the composite mechanical performance is higher than that of the national standard.

Description

A kind of composite flame-retardant agent and its preparation method and application
Technical field
The present invention relates to wood processing technique field, be specifically related to a kind of composite flame-retardant agent and preparation method thereof With the application in producing flame-retardant plywood.
Background technology
Due to excessive the opening up forest of the mankind so that timber resources is the deficientest, therefore the mankind attempt to pass through The comprehensive utilization being embodied in various ways timber improves timber utilization rate, to make up the deficiency of timber resources.People Make the birth of plate, indicate that timber efficiently utilizes and the beginning in timber processing modernization period, make process from The simple log shapes that changes develops into improve wood property.People are by plantation artificial forest, will be from manually Woods is cut down the timber got off and logging residue carries out comprehensive utilization and makes various wood-based plate, come with this Meet people to timber ever increasing need.Timber and residue thereof are made wood-based plate, and it maintains Light, mechanical property is good etc. the characteristic of virgin wood, has again breadth big simultaneously, structural good, executes Work is convenient;Dilation rate is low, dimensionally stable, and material relatively sawn timber is uniform, is unlikely to deform the advantages such as cracking.
Wood-based plate is with timber or other non-wood plants as raw material, is separated into various through certain machining After unit material, apply or do not apply adhesive and the sheet material of other additive pressings or pressing. Wood-based plate mainly includes glued board, particieboard and glued board three major types, wherein the intensity of glued board and volume Stability is best, the most extensive.Glued board is furniture, construction and decoration common used material One of.Actually a kind of wood materials of wood-based plate, is the relatively low combustible of ignition point, the most usually needs Fire retardant to be added carries out flame treatment, and the quality of fire retardant quality will affect wood-based plate fireproof effect Really.
In recent years, the awareness of the importance of fire prevention constantly increased with people along with glued board yield is improving constantly, city Multiple composite flame-retardant agent is occurred in that on Chang.Although composite flame-retardant agent is relatively broad in the application of glued board, but Existing composite flame-retardant agent still suffers from problems with: flame retardant effect is inconspicuous, relatively costly, resistance leachability Poor with resistance to ag(e)ing, to the problem such as the Effect on Mechanical Properties of glued board is big.Therefore, develop a kind of novel The composite flame-retardant agent with high performance-price ratio is very important.
The information being disclosed in this background section is merely intended to increase the reason of the general background to the present invention Solve, and be not construed as recognizing or imply in any form that this information structure is for this area general technology Prior art well known to personnel.
Summary of the invention
For the deficiencies in the prior art, it is an object of the invention to provide a kind of glued board composite flame-retardant agent and Preparation method and the application in producing flame-retardant plywood.
The technical scheme that the present invention provides is:
A kind of composite flame-retardant agent, including the raw material of following parts by weight: ammonium sulfate 10-16 part, phosphoric acid hydrogen two Amine 2-8 part, boric acid 1-5 part, Firebrake ZB 1-5 part, magnesia 1-4 part, aluminum sulfate 1-3 part and hydrogen-oxygen Change aluminium 2-8 part.
As preferably, described composite flame-retardant agent, including the raw material of following parts by weight: 12 parts of ammonium sulfate, Diammonium hydrogen phosphate 4 parts, boric acid 2 parts, Firebrake ZB 1 part, 2 parts of magnesia, 2 parts of aluminum sulfate and hydrogen-oxygen Change 3 parts of aluminium.
Present invention also offers the preparation method of described composite flame-retardant agent, comprise the following steps: by weight Part weighs ammonium sulfate, diammonium hydrogen phosphate, boric acid, Firebrake ZB, magnesia, aluminum sulfate and aluminium hydroxide, It is separately added into pulverizer and is crushed to 120-150 mesh, mix, i.e. obtain composite flame-retardant agent powder.
Present invention also offers described composite flame-retardant agent in the application produced in flame-retardant plywood, including with Lower production stage:
(1) composite flame-retardant agent powder first joins modified urea-formaldehyde resin be in harmonious proportion in glue, composite flame-retardant agent powder The addition at end is the 30% of modified urea-formaldehyde resin mediation colloid amount, obtains the modified urea containing composite flame-retardant agent Urea formaldehyde mediation glue;
(2) two sides of the veneer that moisture content is 12-15% is uniformly applied the modified urea-formaldehyde tree containing fire retardant Fat mediation glue, then it is aged 8-12min;
(3) veneer after step (2) processes is carried out assembly according to a conventional method, then carry out pre- Pressure and hot-pressing processing, obtain burr flame-retardant plywood;
(4) the burr flame-retardant plywood that above-mentioned steps (3) obtains is carried out cutting edge, obtain specification fire-retardant Glued board, finally carries out sanding, facing to specification flame-retardant plywood, obtains finished product flame-retardant plywood.
As preferably, the preparation method of described modified urea-formaldehyde resin mediation glue is by 65-75 part modified urea-formaldehyde Resin glue, 1.2 parts of NH4They are sufficiently mixed uniformly by CL and 9.5-11.25 part flour, stand 20min After obtain modified urea-formaldehyde resin be in harmonious proportion glue.
As preferably, described modified urea-formaldehyde resin glue is that the formaldehyde in glue container is heated to 35 DEG C, Add NaOH and adjust pH to 8.3-8.5, add the urea of formaldehyde quality 36%, be warming up to 70 DEG C of stoppings and adding Heat, makes temperature naturally rise to 85-88 DEG C, reacts 40min;Mass concentration it is slowly added dropwise in 25-30min It is the formic acid solution of 20%, the pH value of reactant liquor is adjusted to 4.6, control reaction time 60-80min, temperature Spend 89-91 DEG C, with being coated with four glasss of mensuration viscosity under the conditions of 30 DEG C, measure 1 time every 5-10min, terminal Viscosity controls at 19-20s;Add formaldehyde quality 2% crosslinking agent, stirring 10min after, then add Enter the urea of formaldehyde quality 16.5%, control reaction temperature 83-85 DEG C, reaction 30min, be cooled to 70 DEG C; It is eventually adding the urea of formaldehyde quality 20%, reacts 30min, be cooled to less than 45 DEG C, adjust with NaOH PH to 8.5-8.8, stirring 10min sample discharging, obtain modified urea-formaldehyde resin glue.
As preferably, the applied amount of the modified urea-formaldehyde resin mediation glue containing fire retardant in step (2) is 250g/m2
As preferably, the technological parameter of the precompressed described in step (3) is: squeeze time 70-90min, Pressure 1.3-1.5MPa, temperature are normal temperature.
As preferably, the technological parameter of the hot pressing described in step (3) is: hot pressing time 7-9min, pressure Power 1.4-1.6MPa, hot pressing temperature are 110-130 DEG C.
Compared with prior art, there is advantages that
1. between each raw material of the composite flame-retardant agent of the present invention, there is cooperative flame retardant effect, have good flame retardation effect, Good and the eco-friendly advantage of low toxicity, smoke-suppressing, and low price.
2. the flame-retardant plywood using the composite flame-retardant agent of the present invention to prepare can significantly improve the fire-retardant of glued board Performance, can reach the requirement of the above fire-protection rating of national standard C level;Its every mechanical property is also better than state Family's standard.
Detailed description of the invention
Below in conjunction with embodiment, the detailed description of the invention of the present invention is described in detail, it is to be understood that this The protection domain of invention is not limited by detailed description of the invention.
Explicitly indicate that unless otherwise other, otherwise in entire disclosure and claims, term " bag Include " or its conversion as " comprising " or " including " etc. will be understood to comprise stated element or Part, and do not get rid of other element or other part.
Embodiment 1:
A kind of composite flame-retardant agent, including the raw material of following parts by weight: 10 parts of ammonium sulfate, diammonium hydrogen phosphate 2 parts, boric acid 1 part, Firebrake ZB 1 part, 1 part of magnesia, 1 part of aluminum sulfate and 2 parts of aluminium hydroxide.
The preparation method of described composite flame-retardant agent, comprises the following steps: weigh by weight ammonium sulfate, Diammonium hydrogen phosphate, boric acid, Firebrake ZB, magnesia, aluminum sulfate and aluminium hydroxide, be separately added into pulverizer It is crushed to 120 mesh, mixes, i.e. obtain composite flame-retardant agent powder.
The application in producing flame-retardant plywood of the described composite flame-retardant agent, comprises the following production steps that
(1) composite flame-retardant agent powder first joins modified urea-formaldehyde resin be in harmonious proportion in glue, composite flame-retardant agent powder The addition at end is the 30% of modified urea-formaldehyde resin mediation colloid amount, obtains the modified urea containing composite flame-retardant agent Urea formaldehyde mediation glue;The preparation method of described modified urea-formaldehyde resin mediation glue is by 65 parts of modified urea-formaldehyde trees Fat glue, 1.2 parts of NH4They are sufficiently mixed uniformly by CL and 9.5 parts of flour, obtain after standing 20min Modified urea-formaldehyde resin mediation glue;Described modified urea-formaldehyde resin glue is to be heated to by the formaldehyde in glue container 35 DEG C, add NaOH and adjust pH to 8.3, add the urea of formaldehyde quality 36%, be warming up to 70 DEG C and stop Only heating, makes temperature naturally rise to 85 DEG C, reacts 40min;Quality it is slowly added dropwise dense in 25-30min Degree is the formic acid solution of 20%, and the pH value of reactant liquor is adjusted to 4.6, controls reaction time 60min, temperature Spend 89 DEG C, with being coated with four glasss of mensuration viscosity under the conditions of 30 DEG C, measure 1 time every 5min, terminal viscosity Control at 19s;Add formaldehyde quality 2% crosslinking agent, stirring 10min after, be subsequently adding formaldehyde The urea of quality 16.5%, controls reaction temperature 83 DEG C, reaction 30min, is cooled to 70 DEG C;Finally add Enter the urea of formaldehyde quality 20%, react 30min, be cooled to less than 45 DEG C, adjust PH extremely with NaOH 8.5, stirring 10min samples discharging, obtains modified urea-formaldehyde resin glue;
(2) two sides of the veneer that moisture content is 12% uniformly applies the modified urea-formaldehyde resin containing fire retardant adjust And glue, then it is aged 8min;The applied amount of the modified urea-formaldehyde resin mediation glue containing fire retardant is 250g/m2
(3) veneer after step (2) processes is carried out assembly according to a conventional method, then carry out pre- Pressure and hot-pressing processing, obtain burr flame-retardant plywood;The technological parameter of described precompressed is: squeeze time 70min, pressure 1.3MPa, temperature are normal temperature;The technological parameter of described 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) obtains is carried out cutting edge, obtain specification fire-retardant Glued board, finally carries out sanding, facing to specification flame-retardant plywood, obtains finished product flame-retardant plywood.
Embodiment 2:
A kind of composite flame-retardant agent, including the raw material of following parts by weight: 16 parts of ammonium sulfate, diammonium hydrogen phosphate 8 parts, boric acid 5 parts, Firebrake ZB 5 parts, 4 parts of magnesia, 3 parts of aluminum sulfate and 8 parts of aluminium hydroxide.
The preparation method of described composite flame-retardant agent, comprises the following steps: weigh by weight ammonium sulfate, Diammonium hydrogen phosphate, boric acid, Firebrake ZB, magnesia, aluminum sulfate and aluminium hydroxide, be separately added into pulverizer It is crushed to 150 mesh, mixes, i.e. obtain composite flame-retardant agent powder.
The application in producing flame-retardant plywood of the described composite flame-retardant agent, comprises the following production steps that
(1) composite flame-retardant agent powder first joins modified urea-formaldehyde resin be in harmonious proportion in glue, composite flame-retardant agent powder The addition at end is the 30% of modified urea-formaldehyde resin mediation colloid amount, obtains the modified urea containing composite flame-retardant agent Urea formaldehyde mediation glue;The preparation method of described modified urea-formaldehyde resin mediation glue is by 75 parts of modified urea-formaldehyde trees Fat glue, 1.2 parts of NH4They are sufficiently mixed uniformly by CL and 11.25 parts of flour, obtain after standing 20min To modified urea-formaldehyde resin mediation glue;Described modified urea-formaldehyde resin glue is to be heated by the formaldehyde in glue container To 35 DEG C, add NaOH and adjust pH to 8.5, add the urea of formaldehyde quality 36%, be warming up to 70 DEG C Stop heating, make temperature naturally rise to 88 DEG C, react 40min;Quality it is slowly added dropwise in 25-30min Concentration is the formic acid solution of 20%, and the pH value of reactant liquor is adjusted to 4.6, control reaction time 80min, Temperature 91 DEG C, with being coated with four glasss of mensuration viscosity under the conditions of 30 DEG C, measures 1 time every 10min, and terminal glues Degree controls at 19-20s;Add formaldehyde quality 2% crosslinking agent, stirring 10min after, be subsequently adding The urea of formaldehyde quality 16.5%, controls reaction temperature 85 DEG C, reaction 30min, is cooled to 70 DEG C;? The urea of rear addition formaldehyde quality 20%, reacts 30min, is cooled to less than 45 DEG C, adjusts PH with NaOH To 8.8, stirring 10min samples discharging, obtains modified urea-formaldehyde resin glue;
(2) two sides of the veneer that moisture content is 15% uniformly applies the modified urea-formaldehyde resin containing fire retardant adjust And glue, then it is aged 12min;The applied amount of the modified urea-formaldehyde resin mediation glue containing fire retardant is 250g/m2
(3) veneer after step (2) processes is carried out assembly according to a conventional method, then carry out pre- Pressure and hot-pressing processing, obtain burr flame-retardant plywood;The technological parameter of described precompressed is: squeeze time 90min, pressure 1.5MPa, temperature are normal temperature;The technological parameter of described 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) obtains is carried out cutting edge, obtain specification fire-retardant Glued board, finally carries out sanding, facing to specification flame-retardant plywood, obtains finished product flame-retardant plywood.
Embodiment 3:
A kind of composite flame-retardant agent, including the raw material of following parts by weight: 12 parts of ammonium sulfate, diammonium hydrogen phosphate 4 parts, boric acid 3 parts, Firebrake ZB 3 parts, 2 parts of magnesia, 2 parts of aluminum sulfate and 4 parts of aluminium hydroxide.
The preparation method of described composite flame-retardant agent, comprises the following steps: weigh by weight ammonium sulfate, Diammonium hydrogen phosphate, boric acid, Firebrake ZB, magnesia, aluminum sulfate and aluminium hydroxide, be separately added into pulverizer It is crushed to 130 mesh, mixes, i.e. obtain composite flame-retardant agent powder.
The application in producing flame-retardant plywood of the described composite flame-retardant agent, comprises the following production steps that
(1) composite flame-retardant agent powder first joins modified urea-formaldehyde resin be in harmonious proportion in glue, composite flame-retardant agent powder The addition at end is the 30% of modified urea-formaldehyde resin mediation colloid amount, obtains the modified urea containing composite flame-retardant agent Urea formaldehyde mediation glue;The preparation method of described modified urea-formaldehyde resin mediation glue is by 70 parts of modified urea-formaldehyde trees Fat glue, 1.2 parts of NH4They are sufficiently mixed uniformly by CL and 10 parts of flour, obtain after standing 20min Modified urea-formaldehyde resin mediation glue;Described modified urea-formaldehyde resin glue is to be heated to by the formaldehyde in glue container 35 DEG C, add NaOH and adjust pH to 8.4, add the urea of formaldehyde quality 36%, be warming up to 70 DEG C and stop Only heating, makes temperature naturally rise to 87 DEG C, reacts 40min;Quality it is slowly added dropwise dense in 25-30min Degree is the formic acid solution of 20%, and the pH value of reactant liquor is adjusted to 4.6, controls reaction time 70min, temperature Spend 90 DEG C, with being coated with four glasss of mensuration viscosity under the conditions of 30 DEG C, measure 1 time every 8min, terminal viscosity Control at 20s;Add formaldehyde quality 2% crosslinking agent, stirring 10min after, be subsequently adding formaldehyde The urea of quality 16.5%, controls reaction temperature 84 DEG C, reaction 30min, is cooled to 70 DEG C;Finally add Enter the urea of formaldehyde quality 20%, react 30min, be cooled to less than 45 DEG C, adjust PH extremely with NaOH 8.6, stirring 10min samples discharging, obtains modified urea-formaldehyde resin glue;
(2) two sides of the veneer that moisture content is 14% uniformly applies the modified urea-formaldehyde resin containing fire retardant adjust And glue, then it is aged 10min;The applied amount of the modified urea-formaldehyde resin mediation glue containing fire retardant is 250g/m2
(3) veneer after step (2) processes is carried out assembly according to a conventional method, then carry out pre- Pressure and hot-pressing processing, obtain burr flame-retardant plywood;The technological parameter of described precompressed is: squeeze time 80min, pressure 1.4MPa, temperature are normal temperature;The technological parameter of described 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) obtains is carried out cutting edge, obtain specification fire-retardant Glued board, finally carries out sanding, facing to specification flame-retardant plywood, obtains finished product flame-retardant plywood.
Embodiment 4: use the performance evaluation of flame-retardant plywood prepared by composite flame-retardant agent of the present invention
Table 1 uses the performance measurement of flame-retardant plywood prepared by the composite flame-retardant agent of the present invention
Note: compareing the glued board for not adding composite flame-retardant agent, its preparation method is with embodiment 1-3.
As it can be seen from table 1 the oxygen index value that embodiment of the present invention 1-3 obtains flame-retardant plywood is all higher than 37% (country's C level fire-protection standard), hence it is evident that be better than comparison and (do not use composite flame-retardant agent to process the glue made Plywood), the requirement of the above fire-protection rating of C level that is up to state standards;The present embodiment obtains flame-retardant plywood Bonding strength and maximal destruction load (do not use composite flame-retardant agent to process the gluing made all close to comparison Plate) and it is better than national standard.
The aforementioned description to the specific illustrative embodiment of the present invention illustrates that and the purpose of illustration. These descriptions are not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to above-mentioned Teaching, can much change and change.The purpose selected exemplary embodiment and describe exists In explaining the certain principles of the present invention and actual application thereof, so that those skilled in the art can be real Now and utilize the various different exemplary of the present invention and various different selection and change. The scope of the present invention is intended to be limited by claims and equivalents thereof.

Claims (9)

1. a composite flame-retardant agent, it is characterised in that include the raw material of following parts by weight: ammonium sulfate 10-16 Part, diammonium hydrogen phosphate 2-8 part, boric acid 1-5 part, Firebrake ZB 1-5 part, magnesia 1-4 part, aluminum sulfate 1-3 part and aluminium hydroxide 2-8 part.
Composite flame-retardant agent the most according to claim 1, it is characterised in that include following parts by weight Raw material: 12 parts of ammonium sulfate, diammonium hydrogen phosphate 4 parts, boric acid 2 parts, Firebrake ZB 1 part, magnesia 2 Part, 2 parts of aluminum sulfate and 3 parts of aluminium hydroxide.
The preparation method of composite flame-retardant agent the most according to claim 1, it is characterised in that include with Lower step: weigh ammonium sulfate, diammonium hydrogen phosphate, boric acid, Firebrake ZB, magnesia, sulfuric acid by weight Aluminium and aluminium hydroxide, be separately added into pulverizer and be crushed to 120-150 mesh, mix, and i.e. obtains compound resistance Combustion agent powder.
4. according to the application in producing flame-retardant plywood of the claim 1-2 arbitrary described composite flame-retardant agent, It is characterized in that, comprise the following production steps that
(1) composite flame-retardant agent powder first joins modified urea-formaldehyde resin be in harmonious proportion in glue, composite flame-retardant agent powder The addition at end is the 30% of modified urea-formaldehyde resin mediation colloid amount, obtains the modified urea containing composite flame-retardant agent Urea formaldehyde mediation glue;
(2) two sides of the veneer that moisture content is 12-15% is uniformly applied the modified urea-formaldehyde tree containing fire retardant Fat mediation glue, then it is aged 8-12min;
(3) veneer after step (2) processes is carried out assembly according to a conventional method, then carry out pre- Pressure and hot-pressing processing, obtain burr flame-retardant plywood;
(4) the burr flame-retardant plywood that above-mentioned steps (3) obtains is carried out cutting edge, obtain specification fire-retardant Glued board, finally carries out sanding, facing to specification flame-retardant plywood, obtains finished product flame-retardant plywood.
The composite flame-retardant agent the most according to claim 4 application in producing flame-retardant plywood, it is special Levy and be: the preparation method of the modified urea-formaldehyde resin mediation glue described in step (2) is 65-75 part to be changed Property urea-formaldehyde resin adhesive, 1.2 parts of NH4They are sufficiently mixed uniformly by CL and 9.5-11.25 part flour, quiet Modified urea-formaldehyde resin mediation glue is obtained after putting 20min.
The composite flame-retardant agent the most according to claim 5 application in producing flame-retardant plywood, it is special Levy and be: described modified urea-formaldehyde resin glue is that the formaldehyde in glue container is heated to 35 DEG C, add NaOH adjusts pH to 8.3-8.5, adds the urea of formaldehyde quality 36%, is warming up to 70 DEG C and stops heating, Make temperature naturally rise to 85-88 DEG C, react 40min;Being slowly added dropwise mass concentration in 25-30min is The formic acid solution of 20%, is adjusted to 4.6 by the pH value of reactant liquor, controls reaction time 60-80min, temperature 89-91 DEG C, with being coated with four glasss of mensuration viscosity under the conditions of 30 DEG C, measuring 1 time every 5-10min, terminal glues Degree controls at 19-20s;Add formaldehyde quality 2% crosslinking agent, stirring 10min after, be subsequently adding The urea of formaldehyde quality 16.5%, controls reaction temperature 83-85 DEG C, reaction 30min, is cooled to 70 DEG C; It is eventually adding the urea of formaldehyde quality 20%, reacts 30min, be cooled to less than 45 DEG C, adjust with NaOH PH to 8.5-8.8, stirring 10min sample discharging, obtain modified urea-formaldehyde resin glue.
The composite flame-retardant agent the most according to claim 4 application in producing flame-retardant plywood, it is special Levy and be: the applied amount of the modified urea-formaldehyde resin mediation glue containing fire retardant in step (2) is 250g/m2
The composite flame-retardant agent the most according to claim 4 application in producing flame-retardant plywood, it is special Levy and be: the technological parameter of the precompressed described in step (3) is: squeeze time 70-90min, pressure 1.3-1.5MPa, temperature are normal temperature.
The composite flame-retardant agent the most according to claim 4 application in producing flame-retardant plywood, it is special Levy and be: the technological parameter of the hot pressing described in step (3) is: hot pressing time 7-9min, pressure 1.4-1.6MPa, hot pressing temperature be 110-130 DEG C.
CN201610103637.2A 2016-02-25 2016-02-25 Composite flame retardant and preparation method and application thereof Pending CN105751324A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106625935A (en) * 2016-11-26 2017-05-10 防城港市林木良种繁育中心苗圃 Wood composite flame retardant, and preparation method and application thereof
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CN110065119A (en) * 2019-05-30 2019-07-30 烟台格瑞恩高分子材料有限公司 A kind of plywood glue type fire retardant and its application

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CN106827135A (en) * 2017-02-06 2017-06-13 广东丰之林木工艺品有限公司 A kind of fire retardant plywood production technology
CN110065119A (en) * 2019-05-30 2019-07-30 烟台格瑞恩高分子材料有限公司 A kind of plywood glue type fire retardant and its application

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