Special high-performance composite adhesive for high-density low-water-absorption environment-friendly fiberboard

Abstract

The invention provides a high-performance composite adhesive special for a high-density low-water-absorption environment-friendly fiberboard, and relates to the technical field of fiberboards. The high-performance composite adhesive is prepared from the following raw materials in parts by mass: 30-60 parts of an organic solvent, 20-30 parts of filler, 10-30 parts of an auxiliary agent, 20-35 parts of formaldehyde-free MD I glue, 6-10 parts of microporous particles and 3-5 parts of nano titanium dioxide. The microporous particles and the nano titanium dioxide are added into the adhesive, the microporous particles can effectively increase the contact area of formaldehyde and the nano titanium dioxide in the adhesive, the nano titanium dioxide can decompose formaldehyde under the photocatalysis effect, the formaldehyde content in the adhesive can be effectively reduced, and the adhesive is more environmentally friendly.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fiberboard, in particular to a high-density low-water-absorption environmentally-friendly special high-performance composite adhesive for fiberboard. BACKGROUND

[0002] Fiberboard is widely used in the fields of home furnishing and building materials, etc. With the rapid rise of a new generation of consumer groups, more and more consumers have put forward more stringent requirements on the environmental protection, formaldehyde emission, moisture resistance, fire resistance and other properties of fiberboard products, and have also endowed fiberboard with more functions and added value. It is also an effective method for manufacturers to improve their product market competitiveness. Therefore, fiberboard has gradually entered the functional era from the traditional type, especially the fiberboard with functions such as moisture resistance, flame retardance and environmental protection, which has been pursued by many consumers.

[0003] The commonly used waterproof agent for fiberboard is mainly paraffin and modified melamine urea-formaldehyde resin. However, the adhesive product in the existing fiberboard will release formaldehyde, which is not allowed in many aspects because free formaldehyde can cause harm to human health. The reason why the finished product releases formaldehyde is that the resin adhesive contains excessive free formaldehyde, and the resin adhesive will also release formaldehyde after curing due to pyrolysis or hydrolysis, which pollutes the environment and causes harm to human health. SUMMARY

[0004] (I) Technical problems solved

[0005] In view of the deficiencies of the prior art, the present application provides a high-density low-water-absorption environmentally-friendly special high-performance composite adhesive for fiberboard, which solves the problem of excessive formaldehyde in the existing adhesive.

[0006] (II) Technical solutions

[0007] To achieve the above purpose, the present application is implemented by the following technical solutions: a high-density low-water-absorption environmentally-friendly special high-performance composite adhesive for fiberboard, which is composed of the following raw materials in parts by mass: organic solvent 30-60 parts, filler 20-30 parts, additive 10-30 parts, formaldehyde-free MDI adhesive 20-35 parts, microporous particles 6-10 parts and nano-titanium dioxide 3-5 parts.

[0008] Preferably, the microporous particles are high-molecular porous microspheres.

[0009] Preferably, the organic solvent is selected from one or two of urea-formaldehyde resin, phenol-formaldehyde resin and melamine-formaldehyde resin.

[0010] Preferably, the filler is composed of wax and improvement additives in a mass ratio of (2-4) : 1.

[0011] Preferably, the adjuvant is composed of one or a combination of glycerol, propylene glycol, silane coupling agent and waterproof powder.

[0012] Preferably, the wax is composed of one or both of paraffin wax and polyethylene wax, and the improving adjuvant is composed of one or both of calcium carbonate and wollastonite.

[0013] Preferably, the pore size of the microporous particles is set to 50-100 nm, and the diameter of the nanometer titanium dioxide is set to 20-50 nm.

[0014] A preparation method of a high-density low-water-absorption environmentally friendly fiberboard special high-performance composite adhesive, applied to the high-density low-water-absorption environmentally friendly fiberboard special high-performance composite adhesive, characterized in that it comprises the following steps:

[0015] Step one, mix the organic solvent, adjuvant and formaldehyde-free MDI glue, and heat the above materials at 150-200 DEG C for 1-2 hours;

[0016] Step two, add the filler, microporous particles and nanometer titanium dioxide to the mixed solution, and continuously stir until the mixed solution is reduced to room temperature;

[0017] Step three, package the prepared adhesive to complete the processing of the adhesive.

[0018] (Three) beneficial effects

[0019] The present application provides a kind of high-density low-water-absorption environmentally friendly fiberboard special high-performance composite adhesive.It has the following beneficial effects:

[0020] 1, the adhesive is added with microporous particles and nanometer titanium dioxide, microporous particles can effectively increase the contact area of formaldehyde and nanometer titanium dioxide in adhesive, nanometer titanium dioxide can decompose formaldehyde under the action of photocatalysis, can effectively reduce the formaldehyde content in adhesive, more green and environmentally friendly.

[0021] 2, the water absorption rate of the fiberboard product produced by the adhesive is controlled within 5%, the formaldehyde emission reaches E0 level standard, and other physical and chemical indexes are far higher than national standard, with good application scene. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described clearly and completely below.Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0023] Embodiment one:

[0024] The embodiment of the present application provides a kind of high-density low water absorption environmental protection type fiberboard special high-performance composite adhesive, it is by following mass parts raw materials composition: organic solvent 30 parts, filler 20 parts, auxiliary 10 parts, no formaldehyde MDI glue 20 parts, microporous particle 6 parts and nanometer titanium dioxide 3 parts, microporous particle selects high polymer porous microsphere, organic solvent selects urea formaldehyde resin, phenol formaldehyde resin, filler is combined by the wax and improvement auxiliary with mass parts ratio 2:1, auxiliary is combined by glycerol, propylene glycol, silane coupling agent, wax selects paraffin wax, improvement auxiliary selects calcium carbonate, the pore size of microporous particle is set to 50-100nm, the diameter of nanometer titanium dioxide is set to 20-50nm.

[0025] A kind of high-density low water absorption environmental protection type fiberboard special high-performance composite adhesive preparation method, applied to the high-density low water absorption environmental protection type fiberboard special high-performance composite adhesive described above, characterized in that, including the following steps:

[0026] Step one, organic solvent, auxiliary and no formaldehyde MDI glue are mixed, and the above materials are heated at 150 DEG C for 1 hour;

[0027] Step two, filler, microporous particle and nanometer titanium dioxide are added into mixed solution, and continuous stirring is carried out until mixed solution is reduced to room temperature;

[0028] Step three, the prepared adhesive is packaged, and the processing of adhesive is completed.

[0029] Embodiment two:

[0030] The embodiment of the present application provides a kind of high-density low water absorption environmental protection type fiberboard special high-performance composite adhesive, it is by following mass parts raw materials composition: organic solvent 60 parts, filler 30 parts, auxiliary 30 parts, no formaldehyde MD I glue 35 parts, microporous particle 10 parts and nanometer titanium dioxide 5 parts, microporous particle selects high polymer porous microsphere, organic solvent selects the combination of urea formaldehyde resin and melamine formaldehyde resin, filler is combined by the wax and improvement auxiliary with mass parts ratio 4:1, auxiliary is combined by glycerol, silane coupling agent and waterproof powder, wax selects polyethylene wax, improvement auxiliary selects wollastonite, the pore size of microporous particle is set to 50-100nm, the diameter of nanometer titanium dioxide is set to 20-50nm.

[0031] A kind of high-density low water absorption environmental protection type fiberboard special high-performance composite adhesive preparation method, applied to the high-density low water absorption environmental protection type fiberboard special high-performance composite adhesive described above, characterized in that, including the following steps:

[0032] Step one, the organic solvent, adjuvant and formaldehyde-free MDI glue are mixed, and the above materials are heated at 200 DEG C for 2 hours;

[0033] Step two, the filler, microporous particles and nano titanium dioxide are added to the mixed solution, and the stirring is continuously carried out until the mixed solution is reduced to room temperature;

[0034] Step three, the prepared adhesive is packaged, and the processing of the adhesive is completed.

[0035] Example two:

[0036] The embodiment of the application provides a kind of high-density low water absorption environmental protection type fiberboard special high-performance composite adhesive, by following mass parts raw materials composition: organic solvent 40 parts, filler 20 parts, adjuvant 200 parts, formaldehyde-free MDI glue 30 parts, microporous particles 7 parts and nano titanium dioxide 4 parts, microporous particles select high molecular porous microspheres, organic solvent selects the mixed solution of urea-formaldehyde resin and phenol-formaldehyde resin, filler is combined by the wax of mass ratio 3:1 and improvement material, adjuvant is combined by glycerol and waterproof powder, wax is mixed by paraffin and polyethylene wax, improvement material selects calcium carbonate, the pore size of microporous particles is set as 50-100nm, and the diameter of nano titanium dioxide is set as 20-50nm.

[0037] A kind of preparation method of high-density low water absorption environmental protection type fiberboard special high-performance composite adhesive, applied to the above-mentioned high-density low water absorption environmental protection type fiberboard special high-performance composite adhesive, characterized by comprising the following steps:

[0038] Step one, the organic solvent, adjuvant and formaldehyde-free MDI glue are mixed, and the above materials are heated at 175 DEG C for 2 hours;

[0039] Step two, the filler, microporous particles and nano titanium dioxide are added to the mixed solution, and the stirring is continuously carried out until the mixed solution is reduced to room temperature;

[0040] Step three, the prepared adhesive is packaged, and the processing of the adhesive is completed.

[0041] Example two:

[0042] The embodiment of the present application provides a kind of high-density low water absorption environmental protection type fiberboard special high-performance composite adhesive, by following mass parts raw materials composition: organic solvent 50 parts, filler 30 parts, auxiliary 10 parts, formaldehyde-free MDI glue 20 parts, microporous particle 10 parts and nanometer titanium dioxide 3 parts, microporous particle selects high polymer porous microsphere, organic solvent selects the mixed solution of phenolic resin and melamine formaldehyde resin, filler is combined by the wax and improvement auxiliary with mass ratio 2:1, auxiliary is mixed by glycerol, propylene glycol, silane coupling agent and waterproof powder, wax is mixed by paraffin wax and polyethylene wax, improvement auxiliary is mixed by calcium carbonate and wollastonite, the pore size of microporous particle is set to 50-100nm, and the diameter of nanometer titanium dioxide is set to 20-50nm.

[0043] A kind of high-density low water absorption environmental protection type fiberboard special high-performance composite adhesive preparation method, applied to the above-mentioned high-density low water absorption environmental protection type fiberboard special high-performance composite adhesive, characterized in that, it include the following steps:

[0044] Step one, organic solvent, auxiliary and formaldehyde-free MDI glue are mixed, and the above-mentioned material is heated at 200 DEG C for 1 hour;

[0045] Step two, filler, microporous particle and nanometer titanium dioxide are added to mixed solution, and continuously stir, until mixed solution reduces to room temperature;

[0046] Step three, the prepared adhesive is packaged, and the processing of adhesive is completed.

[0047] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-density low-water-absorption environmentally friendly fiberboard special-purpose high-performance composite adhesive, characterized in that, The adhesive is prepared from the following raw materials by mass parts: organic solvent 30-60 parts, filler 20-30 parts, auxiliary 10-30 parts, formaldehyde-free MDI glue 20-35 parts, microporous particles 6-10 parts and nano titanium dioxide 3-5 parts.

2. The high-density low-water-absorption environmentally friendly fiberboard special-purpose high-performance composite adhesive according to claim 1, characterized in that: The microporous particles are high polymer porous microspheres.

3. The high-density low-water-absorption environmentally friendly fiberboard special-purpose high-performance composite adhesive according to claim 1, characterized in that: The organic solvent is selected from one or two of urea-formaldehyde resin, phenol-formaldehyde resin and melamine-formaldehyde resin.

4. The high-density low-water-absorption environmentally friendly fiberboard special-purpose high-performance composite adhesive according to claim 1, characterized in that: The filler is composed of wax and improvement auxiliary in a mass ratio of (2-4) :

1.

5. The high-density low-water-absorption environmentally friendly fiberboard special-purpose high-performance composite adhesive according to claim 1, characterized in that: The auxiliary is composed of one or several of glycerol, propylene glycol, silane coupling agent and waterproof powder.

6. The high-density low-water-absorption environmentally friendly fiberboard special-purpose high-performance composite adhesive according to claim 4, characterized in that: The wax is composed of one or both of paraffin wax and polyethylene wax, and the improvement auxiliary is composed of one or both of calcium carbonate and wollastonite.

7. The high-density low-water-absorption environmentally friendly fiberboard special-purpose high-performance composite adhesive according to claim 1, characterized in that: The microporous particles have a pore size of 50-100 nm, and the nano titanium dioxide has a diameter of 20-50 nm.

8. A preparation method of a high-density low-water-absorption environmentally friendly fiberboard special-purpose high-performance composite adhesive, applied to the high-density low-water-absorption environmentally friendly fiberboard special-purpose high-performance composite adhesive of claims 1-7, characterized in that, The method comprises the following steps: Step one, mix the organic solvent, auxiliary and formaldehyde-free MDI glue, and heat the above materials at 150-200 ℃ for 1-2 hours; Step two, add the filler, microporous particles and nano titanium dioxide into the mixed solution, and continuously stir until the mixed solution is cooled to room temperature; Step three, package the prepared adhesive to complete the processing of the adhesive.