Summary of the invention
The purpose of this invention is to provide a kind of HS, natural fiber resin composite cheaply.
In order to reach above-mentioned purpose, solution of the present invention is:
A kind of natural fiber resin composite; It is characterized in that it is by mainly comprising the preparation of following components in weight portions: 100~200 parts in 10~50 parts of water-base resins, 10~50 parts of non-aqueous epoxy resin (being water-insoluble epoxy resin), 50~200 parts in natural fiber, 3~15 parts of water-soluble stiffening agents, 6~15 parts of phase-transfer catalysts, 50~150 parts of fillers and water.
In a preferred embodiment of the present invention, said water-base resin is by mainly comprising following components in weight portions preparation: 4~20 parts of 10~100 parts of non-aqueous resins and water-based initiators.The concrete preparation method of water-base resin is following: the non-aqueous resin of said ratio is put into reaction kettle with the water-based initiator mix, obtained in 1~2 hour at 120~160 ℃ of compressive reactions.This part content has been open in detail in 200910310409.2 the patented claim at the patentee's number of patent application, no longer carefully states at this.Said non-aqueous resin is selected from least a in epoxy resin, unsaturated polyester resin, resol, urea-formaldehyde resin or the Vinylite, and makes aqueous epoxy resins, water-based unsaturated polyester resin, aqueous phenolic aldehyde resin, water-based urea-formaldehyde resin or aqueous vinyl resin or other relevant water-base resins respectively.Preferably, said water-base resin is an aqueous epoxy resins, and said aqueous epoxy resins is at least a in Water-borne modification bisphenol A epoxide resin, Water-borne modification phenol aldehyde type epoxy resin or the Water-borne modification dilution type epoxy resin.Further preferably, said Water-borne modification bisphenol A epoxide resin is at least a in E51, E20, E44, E41, Epon828, BE188, CYD128 or other the relevant epoxy resin; Said Water-borne modification phenol aldehyde type epoxy resin is at least a in F51, F20, F44, F41 or other the relevant epoxy resin; Said Water-borne modification dilution type epoxy resin is at least a in ethylene glycol bisthioglycolate glycidyl ester, butyleneglycol 2-glycidyl ester, Ucar 35 2-glycidyl ester, USP Kosher 2-glycidyl ester or the glycidyl allyl ether.Further preferably, said aqueous epoxy resins is water-based bisphenol A epoxide resin BE188.Said water-based initiator is selected from Sodium Persulfate, Potassium Persulphate, 4; 4-azo two (4-cyanopentanoic acid), 4; 4-azo two (4-cyanopentanoic acid sodium), 4, at least a in 4-azo two (4-cyanic acid amylalcohol), methylethyl ketone peroxides, cyclohexanone peroxide or other the relevant initiators.The effect of water-based initiator is that hydrophilic radical is introduced non-aqueous resin, and it is water-soluble to make that non-aqueous resin becomes.Preferably, aforementioned water-based initiator is 4,4-azo two (4-cyanopentanoic acid).
Said non-aqueous epoxy resin (being water-insoluble epoxy resin) is selected from least a in bisphenol A epoxide resin or the phenol aldehyde type epoxy resin.Said bisphenol A epoxide resin is at least a in E51, E20, E44, E41, Epon828, BE188, CYD128 or other the relevant epoxy resin, said phenol aldehyde type epoxy resin be in F51, F20, F44, F41 or other the relevant epoxy resin at least a-.
Described natural fiber is selected from least a in xylon, flaxen fiber, cotton fibre, bamboo fibers, vine fiber ti, straw fiber, sea-weed fibre or other the relevant natural fibers.Among the present invention, natural fiber need be ground into powder in advance, then uses again.
Said water-soluble stiffening agent is the stiffening agent of aqueous epoxy resins; It is only be restricted to must have water-soluble; And can with the epoxy resin commissure; Specifically can be selected from trolamine, quadrol, NSC 446, Triethylenetetramine (TETA), tetren, polyvinylamine, phenolic aldehyde amine, 2; 4,6-three (dimethylamino methyl) phenol ,-aqueous polyamide, policapram, dicyanamide, boron trifluoride-amine complex ,-at least a in propylamine, water-soluble aromatic amine, isophorone diamine, thiocarbamide, mercaptan amine, thiocarbamide-polyamine condenses or other the relevant stiffening agents of water-based polyureas, polyetheramine (Jeffamine), hexanediamine, amine end-blocking water-based polyimide, ammoniacal liquor, diethylin.Preferably, aforesaid water-soluble stiffening agent is at least a of NSC 446, polyvinylamine, mercaptan amine or policapram.Because in the aqueous epoxy resin emulsion, epoxide functional groups is at oil phase, and the functional group of water-based stiffening agent is at water, carries out two catalysis between mutually because of needing phase-transfer catalyst a bit.The epoxide functional groups that act as the catalysis oil phase of phase-transfer catalyst and the reaction of the stiffening agent of water are " oil-in-water " state with " water-in-oil " state-transition.Among the present invention, said phase-transfer catalyst is at least a in crown ether, polyoxyethylene glycol, quaternary amine 、 quaternary alkylphosphonium salt, sulfonium salt, arsenic salt, cave ether or other related compound.Preferably, said quaternary ammonium salt is Tetrabutyl amonium bromide and methyl trioctylphosphine ammonium chloride, and said quaternary alkylphosphonium salt is bromination Shi six alkyl San Ding Ji Phosphonium; Further preferably, said phase-transfer catalyst is a polyoxyethylene glycol.
Described filler is silica flour, stone flour, native powder, starch, white titanium pigment, clay powder, carbon black, nano-carbon powder, carbon fiber powder, glass fiber powder, nanoclay, Graphite Powder 99, Graphene, red phosphorus, White tin oxide, aluminium hydrate powder, Marinco H powder, stannic hydroxide, Antimony Trioxide: 99.5Min, molybdenum oxide, ammonium molybdate, zinc borate, barium metaborate, boron oxide, gathers and accompany half siloxanes, three (2; 3-two chloropropyls) at least a in SULPHOSUCCINIC ACID ESTER, vinylchlorid, SE, chlorine alkylphosphonic acid carboxylic acid glycidyl ester, amido SULPHOSUCCINIC ACID ESTER, phosphagel phosphaljel, trimeric cyanamide urea hydrochlorate, two (2, the 3-dibromopropyl) fumarate, tetrabromo-benzene dicarboxylic acid anhydride, tetrabromo-bisphenol, clorafin, hexachloro endoethylene tetrahydrophthalic acid acid anhydride, Fluroplast-4, viton, paraffin, softening agent, toughner, tributyl phosphate, triethyl phosphate, triphenylphosphate, Witcizer 300, dimethyl phthalate, diethyl phthalate, glass powder, jade powder, animal excrement, glass powder, sand, glass fiber powder, carbon fiber powder, plastic waste powder, cement, rubble, useless foaming rubber powder, wax powder, mica, asphalt powder or other associated materials.Among the present invention, above-mentioned filler need be ground into powder in advance, then uses again.
In the further embodiment of the present invention; Also comprise 1~10 part of monomer in the above-mentioned water-base resin, described monomer is at least a of vinylbenzene, vinyl cyanide, divinyl, butylene, vinylformic acid, methylacrylic acid, TEB 3K, methyl acrylate, ethyl propenoate, propyl acrylate, Bing Xisuandingzhi, the different monooctyl ester of propylene, Jia Jibingxisuanyizhi, propyl methacrylate, NSC 20956, toxilic acid, maleic anhydride or other relevant monomer.The monomeric lifting water-based free radical initiator that act as grafts on the efficient in the epoxy resin, increases material filming property, improves the material waterproofing performance, and reduces cost.Preferably, aforesaid monomer is at least a in vinylbenzene, TEB 3K, vinylformic acid, vinyl mercaptan, propenyl glycidyl ether, vinyl cyanide or the divinyl.
In the further embodiment of the present invention; Also comprise 1~2 part non-aqueous initiator in the said aqueous epoxy resins; Said non-aqueous initiator is selected from 4,4-azo two (4-cyanic acid butane peroxy dicarbonate two-2-phenoxy ester), peroxy dicarbonates two (4-tertiary butyl hexanaphthene), 2,5-two (2-ethyl hexanoyl peroxide)-2; 5-dimethyl-ethane, Lucidol, tert-butyl hydroperoxide-2-ethylhexanoate, 2-tertiary butyl azo-2-dicyanopropane, 2-tertiary butyl azo-dicyanobutane, 1; 1-two (t-butyl peroxy) 3,3,5-trimethyl-cyclohexane, 1; 1-two (t-butyl peroxy) hexanaphthene, 1-tertiary butyl azo-1-cyanocyclohexanoic alkane, 0; The 0-tertiary butyl-0-sec.-propyl list peroxycarbonates, butyl perbenzoate, ethyl-3,3-two (tert-butyl peroxide) butyric ester, Di Cumyl Peroxide 99, peroxo-LAURIC ACID 99 MIN, 2,5-dimethylhexane-2; 5-diperoxy ethylhexoate, peroxide-2-ethyl hexanoic acid tert-butyl, peroxide acid tert-butyl, 3, at least a in 3-two (t-butyl peroxy) ethyl n-butyrate or other the relevant initiators.Non-aqueous initiator can increase the hydrophobicity behind the hardened material, itself and the acting in conjunction of water-based initiator, regulate material can be in water before sclerosis dispersion and emulsion, then have certain hydrophobicity after the sclerosis.
A further embodiment of the invention, it further comprises 1 to 5 parts (by weight ratio) of the coupling, the coupling agent is selected from vinyltriethoxysilane, divinyl (β-methoxy- ethoxy) silane, γ-methacryloxypropyl trimethoxy silane, β-(3,4 - epoxycyclohexyl) ethyl trimethoxysilane, glycidoxypropyl trimethoxysilane, α - aminopropyl triethoxy silane, n-β-(aminoethyl)-α-aminopropyl trimethoxysilane, α-chloro-trimethoxysilane, α-mercaptopropyl trimethoxy silane, vinyl-tris - (t-butylperoxy) silane, methyl triethoxysilane anilino, diethylenetriaminepentaacetic aminopropyl triethoxysilane, methyltrimethoxysilane aniline, α-(methyl acryloyloxy group) methyl triethoxysilane, N, N-bis - (β-hydroxyethyl)-γ-aminopropyl triethoxysilane, n-butyl titanate, isopropyl titanium esters, tetraethyl titanate, 3,3,4 - tris (dioctyl phosphate acyloxy) titanate, isopropyl, 3,3,6 - tris (dioctyl pyrophosphate Ang oxy) titanium isopropyl, 3,3,7 - four octyloxy titanium (dodecyl phosphite), 3,3,12 - two (dioctyl phosphite ester) tetraisopropyl titanate or three , 3,10 - tris (acyloxy-phosphorus) titanate, at least one of ethylene.
Another object of the present invention provides the preparation method of natural fiber resin composite.
The preparation method of natural fiber resin composite is characterized in that, comprises following step:
1) water-base resin, non-aqueous epoxy resin, natural fiber, water-soluble stiffening agent, phase-transfer catalyst, filler and water are got the raw materials ready by aforementioned weight proportion;
2) in aqueous epoxy resins, sneak into non-aqueous epoxy resin, then add natural fiber, phase-transfer catalyst, filler and water, mix with kneader; Then add water-soluble stiffening agent again; Mix with kneader, do hydraulic pressure, be heated to 150~180 ℃ and form natural fiber resin composite.
Only if name especially, the implication of employed here all technology and scientific terminology is identical with the affiliated common implication of understanding of technical field those skilled in the art of the present invention.Equally, all introduce the present invention as a reference at this publication of mentioning, patented claim, patent and other bibliographys.
Compared with prior art, the present invention has following characteristics:
1) the present invention uses less resin to have good wetting effect to natural fiber; Coat performance resins material cheap, that do not absorb water at natural fiber, improve the water tolerance and the anti-bacterial degradation performance of natural fiber, it is suitable that its prepared product and traditional bakelite are compared performance; And cost of manufacture is lower than traditional bakelite; Compare as the wad of tackiness agent with urea-formaldehyde resin with tradition and then to have preferable water-repellancy, and do not contain formaldehyde fully, have plasticity-; Be not limited to sheet material, can be processed into Any shape;
2) the non-aqueous epoxy resin that adds is used for improving the fragility of water-base resin, obtains high-strength natural fibre resin matrix material.
Embodiment
Embodiment 1
By weight water intaking property bisphenol A epoxide resin BE188 (aqueous epoxy resins) 40g, bisphenol A epoxide resin BE188 (non-aqueous epoxy resin is produced by Changchun, Taiwan chemical industry group) 20g, wood powder (natural fiber) 100g, NSC 446 (water-soluble stiffening agent) 5g, polyoxyethylene glycol (phase-transfer catalyst) 10g, starch (filler) 5g, silica flour (filler) 100g and water 100g.
This wherein; Water-based bisphenol A epoxide resin BE188 obtains through following mode: other gets bisphenol A epoxide resin BE18830g and 4; Two (4-cyanopentanoic acid) 10g of 4-azo get the raw materials ready; With bisphenol A epoxide resin BE188 and 4,4-azo two (4-cyanopentanoic acid) is put into reaction kettle and is mixed, and obtains after 1 hour at 150 ℃ of compressive reactions.
In water-based bisphenol A epoxide resin BE188, sneak into bisphenol A epoxide resin BE188; Then add wood powder, polyoxyethylene glycol, starch, silica flour and water; Mix with kneader, then add NSC 446 again, mix with kneader; Do hydraulic pressure, be heated to 150 ℃ and form natural fiber resin composite sheet material.
Detection method and result:
1) sheet material was steeped in the entry 10 days, sheet material does not still scatter;
2) highly drop is to concrete floor from 2m with sheet material, and sheet material does not still break.
Embodiment 2
By weight water intaking property bisphenol A epoxide resin BE188 (aqueous epoxy resins) 14g, bisphenol A epoxide resin BE188 (non-aqueous epoxy resin is produced by Changchun, Taiwan chemical industry group) 50g, wood powder (natural fiber) 50g, NSC 446 (water-soluble stiffening agent) 3g, polyoxyethylene glycol (phase-transfer catalyst) 6g, starch (filler) 5g, silica flour (filler) 45g and water 200g.
This wherein; Water-based bisphenol A epoxide resin BE188 obtains through following mode: other gets bisphenol A epoxide resin BE18810g and 4; Two (4-cyanopentanoic acid) 4g of 4-azo get the raw materials ready; With bisphenol A epoxide resin BE188 and 4,4-azo two (4-cyanopentanoic acid) is put into reaction kettle and is mixed, and obtains after 1 hour at 150 ℃ of compressive reactions.
In water-based bisphenol A epoxide resin BE188, sneak into bisphenol A epoxide resin BE188; Then adding wood powder, terepthaloyl moietie, starch, silica flour and water mixes with kneader; Then add NSC 446 again; Mix with kneader, do hydraulic pressure, be heated to 180 ℃ and form natural fiber resin composite sheet material.
Detection method and result:
1) sheet material was steeped in the entry 10 days, sheet material does not still scatter;
2) highly drop is to concrete floor from 2m with sheet material, and sheet material does not still break.
Embodiment 3
Water intaking property bisphenol A epoxide resin BE188 (aqueous epoxy resins) 50g, bisphenol A epoxide resin BE188 (non-aqueous epoxy resin is produced by Changchun, Taiwan chemical industry group) 10g, wood powder (natural fiber) 200g, NSC 446 (water-soluble stiffening agent) 15g, polyoxyethylene glycol (phase-transfer catalyst) 15g, starch (filler) 50g, silica flour (filler) 100g and water 150g.
This wherein; Water-based bisphenol A epoxide resin BE188 obtains through following mode: other gets bisphenol A epoxide resin BE18830g and 4; Two (4-cyanopentanoic acid) 20g of 4-azo get the raw materials ready; With bisphenol A epoxide resin BE188 and 4,4-azo two (4-cyanopentanoic acid) is put into reaction kettle and is mixed, and obtains after 1 hour at 150 ℃ of compressive reactions.
In water-based bisphenol A epoxide resin BE188, sneak into bisphenol A epoxide resin BE188; Then add wood powder, polyoxyethylene glycol, starch, silica flour and water; Mix with kneader, then add NSC 446 again, mix with kneader; Do hydraulic pressure, be heated to 180 ℃ and form natural fiber resin composite sheet material.
Detection method and result:
1) sheet material was steeped in the entry 10 days, sheet material does not still scatter;
2) highly drop is to concrete floor from 2m with sheet material, and sheet material does not still break.
Reference examples 1
By weight water intaking property bisphenol A epoxide resin BE188 (aqueous epoxy resins) 50g, wood powder (natural fiber) 100g, NSC 446 (water-soluble stiffening agent) 5g, polyoxyethylene glycol (phase-transfer catalyst) 10g, starch (filler) 5g, silica flour (filler) 100g and water 100g.
This wherein; Water-based bisphenol A epoxide resin BE188 obtains through following mode: get bisphenol A epoxide resin BE18830g and 4; Two (4-cyanopentanoic acid) 20g of 4-azo get the raw materials ready; With bisphenol A epoxide resin BE188 and 4,4-azo two (4-cyanopentanoic acid) is put into reaction kettle and is mixed, and obtains after 1 hour at 150 ℃ of compressive reactions.
In water-based bisphenol A epoxide resin BE188, add wood powder, polyoxyethylene glycol, starch, silica flour and water; Mix with kneader, then add NSC 446 again, mix with kneader; Do hydraulic pressure, be heated to 150 ℃ and form natural fiber resin composite sheet material.
Detection method and result:
1) sheet material was steeped in the entry 10 days, sheet material does not still scatter;
2) highly drop is to concrete floor from 1m with sheet material, and sheet material breaks.
Reference examples 2
By weight getting urea-formaldehyde resin 40g, wood powder (natural fiber) 100g, ammoniacal liquor 30g, polyoxyethylene glycol (phase-transfer catalyst) 10g, starch (filler) 5g, silica flour (filler) 100g and water 200g; Then above-mentioned materials being added kneader mixes; Do hydraulic pressure, be heated to 150 ℃ and form sheet material.
Detection method and result:
1) sheet material was steeped in the entry after 3 days, sheet material scatters;
2) highly drop is to concrete floor from 1m with sheet material, and sheet material breaks.
The foregoing description is a preferred implementation of the present invention; But embodiment of the present invention is not restricted to the described embodiments; Other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify; All should be the substitute mode of equivalence, be included within protection scope of the present invention.