CN103866570A - Bamboo fiber surface treating agent for composite material and preparation method of bamboo fiber surface treating agent - Google Patents
Bamboo fiber surface treating agent for composite material and preparation method of bamboo fiber surface treating agent Download PDFInfo
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Abstract
The invention provides a bamboo fiber surface treating agent for a composite material and a preparation method of the bamboo fiber surface treating agent. The surface treating agent comprises two components A and B, wherein the component A is a synthetic melamine formaldehyde resin surface treating agent, and vinyl-containing polyvinyl alcohol is introduced into the synthetic melamine formaldehyde resin surface treating agent, so that vinyl is intercalated in a molecular chain of melamine formaldehyde resin; the component B is ammonium polyphosphate; when the bamboo fiber surface treating agent is used, the component A and the component B are mixed together in a ratio of 10:1 to obtain a mixture, and then the mixture is sprayed to the surfaces of bamboo fibers. The bamboo fiber surface treating agent has the excellent binding property of the bamboo fibers, and also has the excellent compatibility with polyethylene and polypropylene plastics, and therefore, when the bamboo fibers are used for reinforcing the polyethylene and polypropylene plastics to manufacture the composite material, the compatibility of a composite connection surface can be well improved, and furthermore, the purpose of improving the properties of the composite material is achieved.
Description
Technical field
The invention belongs to a kind of surface conditioning agent and preparation method of material, especially bamboo fibre surface conditioning agent and preparation method thereof for composite; Mainly be applicable to the manufacture of bamboo fiber composite material.
Background technology
String source is abundant, renewable, low price, reusable edible and biodegradable.The mechanics that it is good and physical property and excited the interest of a large amount of industrial departments with the characteristic of environmental harmony.It is worth mentioning that auto industry, the application in automotive upholstery for alternative metals material and plastics, in recent years, start development and exploitation natural plant fibre composite both at home and abroad, string as the compound string reinforced thermoplastics felt composite material of preparing of the thermoplastic such as reinforcing material and polypropylene for automotive upholstery manufacture.More domestic automotive upholstery manufacturers have also started to adopt glass fibre, tossa and sisal fiber etc. to make natural plant fibre polymer composites as reinforcing material and thermosetting and thermoplastic polymer to produce for automotive upholstery.Automobile mainly refers to string with string, as flax fibres such as mestha, hemp, flax, jute and sisal hemps.
Bamboo fibre is a kind of natural plant fibre recently developing, and its content of cellulose is high, and is compound wall structure, has splendid TENSILE STRENGTH and elastic modelling quantity.Bamboo fiber reinforcement thermoplastic plastic composite material can be given full play to the advantages such as bamboo fibre specific strength is large, specific stiffness is large and thermoplastic is water-fast, corrosion-resistant, wear-resisting, recyclable recycling, and this material also has the features such as heat insulation, sound-absorbing, density be low simultaneously.But because bamboo wood is mainly made up of cellulose, lignin and three kinds of natural organic high-moleculars of hemicellulose, wherein contain a large amount of polar groups, and the compatibility of the PE, PP plastics of the cellulose that hydrophily is extremely strong and hemicellulose and strand shortage active group is poor, and compound tense is difficult to form effective Interface Adhesion.In order to obtain the composite of excellent performance, must carry out to the surface of bamboo fiber material the modification of physics or chemical method, change its configuration of surface, crystalline state, surface energy, polarity, surface chemical composition and remove surperficial weak boundary layer, adjust to matrix surface performance and adapt and match, to improve the two compatibility, wettability, reactivity and adhesive property.Bamboo fibre has incendive shortcoming simultaneously, just must carry out flame treatment as automotive trim with material.
Do not find the directly patent identical with the technology of the present invention by retrieval, just have some patents about other fiber surface processing aspect, have certain associated patent to mainly contain following with the present invention:
1, the patent No. is CN201010614782.X, and name is called " a kind of surface treatment of carbon fibers agent and processing method thereof ", and this patent discloses a kind of surface treatment of carbon fibers agent and processing method thereof.This finishing agent is prepared from by following component: solvent 0%-99%; Polyacrylonitrile 1%-100%.The present invention mainly carries out the cementability of surface treatment raising carbon fiber and polar resin matrix to carbon fiber by liquid polyacrylonitrile, improve the mechanical property of carbon fibre reinforcement.
2, the patent No. is CN201110118744.X, name is called " polyethylene terephthalate composite and preparation facilities ", this patent discloses a kind of polyethylene terephthalate composite, and its percentage by weight consists of: polyethylene terephthalate 69～97%; Carbon fiber 2～30%; Nucleator 0.5～5%; Coupling agent 0.1～1%; Antioxidant 0.01～0.1%; All the other are surface treatment of carbon fibers agent.
3, the patent No. is CN201310459635; name is called " surface treatment agent for polymer fibers "; this patent discloses a kind of aquifer surface treatment agent of the polymer fiber based on resin, it is characterized in that it contains: the polar phenolic plastics of the resol resin type of 1-30% weight; The available fusibleness phenolic resins of 2-40% weight is crosslinked, can carry out the aromatic methylol of radical polymerization and/or the copolymer of halomethyl compounds and all the other are water, form 100% weight, wherein if desired, also can be added to other bonding improver of many 5% weight.The present invention also comprises that above-mentioned surface conditioning agent is for organic or inorganic polymer fiber, the application in preferably polyamide or polyimide fiber, particularly aromatic arginyl amine fiber modification and the method for modifying of polymer fiber.
Although above-mentioned these patents relate to the surface conditioning agent of fiber, but do not mention the surface conditioning agent of bamboo fibre, and because characteristic and these fibers of bamboo fiber composite material are also completely different, therefore these surface conditioning agents can not be used for the bamboo fibre surface modification treatment of bamboo fiber composite material, are therefore still necessary the surface conditioning agent of bamboo fiber composite material to be studied.
Summary of the invention
The object of the invention is to not be suitable for for current fiber surface finishing agent the surface modification treatment of bamboo fiber composite material, a kind of modification that can carry out to bamboo fibre surface physics or chemical method is provided, change its configuration of surface, crystalline state, surface can, polarity, surface chemical composition and remove surperficial weak boundary layer, adjust to matrix surface performance and adapt and match, to improve the compatibility of the two, wettability, reactivity and adhesive property, effectively change the compatibility on bamboo fibre surface, while improving with other Material cladding, form surface conditioning agent of effective Interface Adhesion power and preparation method thereof.This surface conditioning agent can effectively change bamboo fibre fire resistance simultaneously.
For realizing object of the present invention, the implementer's case proposing is a kind of composite bamboo fibre surface conditioning agent, surface conditioning agent divides and comprises A and two kinds of components of B, wherein, A component is production of melamine formaldehyde resin surface conditioning agent, in production of melamine formaldehyde resin component, introduce the polyvinyl alcohol with vinyl, made to have embedded vinyl on the strand of melamine resin; B component is ammonium polyphosphate, mixes, then spray application to bamboo fibre surface when use according to A component with B component with the deal of 10:1.
Further, described production of melamine formaldehyde resin comprises following component, and as follows according to weight proportion:
Formalin 180-190kg
Melamine 105-110kg
Polyvinyl alcohol 90-95kg
Above-mentioned material is placed in to reactor to react and makes production of melamine formaldehyde resin.
Further, in production of melamine formaldehyde resin, be added with the sodium hydrate aqueous solution that regulates formalin pH value in reactor, to guarantee in reactor that pH value is as 8.5-9.0.
Further, the quality percentage composition of described formalin is 36.5-37.5%; The quality percentage composition of described melamine is for being greater than 99%; The quality percentage composition of described polyvinyl alcohol is 98-99%, and average degree of polymerization is 1700-1800, and alcohol Jie degree is more than 99.8%; The quality percentage composition of described sodium hydrate aqueous solution is 27-32%.
The preparation method of above-mentioned production of melamine formaldehyde resin surface conditioning agent comprises the following steps:
1, choose formalin, melamine and polyvinyl alcohol according to proportioning;
2, formalin is added to reactor, start agitator, with pH value 8.5-9.0 in sodium hydrate aqueous solution adjusting reactor, open the heating valve of reactor, start to be heated to 45 ℃;
3, by melamine and polyvinyl alcohol separately or mix and evenly add in batches reactor, after reinforced, in 30 minutes, make temperature in reactor evenly rise to 88-92 ℃, after arrival design temperature, be incubated 10-45 minute, this stage pH value regulates and remains between 7.0-7.5; Naturally cooling after insulation;
4, start to lower the temperature, observe muddy temperature from extracting reaction solution sample in reactor continuously, in the time that muddy temperature reaches 24-25 ℃, immediately reactant liquor is cooled to below 75 ℃, and adds first alcohol 60-72kg;
5, add after first alcohol, sub-sampling again, and the muddy temperature of continuation observation mixed liquor, in the time that muddy temperature continues to drop to 15 ℃, adjust pH value at 8.7-8.9 with NaOH, with 20 minutes, reactant liquor is continued to be warming up to 90 ± 2 ℃, after arrival design temperature, be incubated 10-45 minute, this stage pH value should remain on 7.5-8.0, and temperature retention time is to rear cooling naturally;
6, start to lower the temperature, observe muddy temperature from extracting reaction solution sample in reactor continuously, and observe the muddy temperature of mixed liquor, in the time that muddy temperature drops to 23-24 ℃, the cooling second batch alcohol 40-48kg that adds immediately, and adjust pH value between 7.0-7.2 with NaOH, and continue to be cooled to 40 ℃ of following blowings storages for subsequent use, make A component;
7, choose B component, B component is for directly choosing ammonium polyphosphate, and ammonium polyphosphate quality percentage composition is for being greater than 98%, the degree of polymerization 20 left and right.
8, spray application to before bamboo fibre surface, it is in 10% B component that above-mentioned A component is added to mass percent, sprays the surface in bamboo fibre after mixing.
Further, be more than 95% at the quality percentage composition of the added ethanol water of preparation method; The quality percentage composition of described ammonium polyphosphate is for being greater than 98%, the degree of polymerization 20 left and right.
The present invention has following characteristics: resin body composition prepared by the present invention is a kind of melamine resin bamboo wood to good combination performance, in component, introduce the polyvinyl alcohol with vinyl simultaneously, make to have embedded vinyl on the strand of melamine resin, and vinyl all has extraordinary compatibility with polyethylene and polypropylene plastics, therefore resin of the present invention had both had the good combination with bamboo fibre, have again and polyethylene and the good compatibility of polypropylene plastics, therefore while utilizing bamboo fiber reinforcement polyethylene and polypropylene plastics to manufacture composite, can improve well the compatibility of compound interface, thereby reach the object that improves composite property.Ammonium polyphosphate is a kind of good fire retardant in addition, why the present invention selects the finishing agent timing of ammonium polyphosphate to add, main cause is that resin needs certain storage period, be generally 20-30 days, and resin has acid-sensitive, and ammonium polyphosphate is faintly acid, so in order to guarantee enough storage periods of resin, so just allotment adds ammonium polyphosphate in the time putting on bamboo fibre, in the time of allotment, add ammonium polyphosphate can make the pH value of finishing agent decline, and can promote solidifying of resin body composition, surface conditioning agent of the present invention generally sprays on wet bamboo fibre surface, carry out high temperature drying or manufacture in bamboo fiber composite material hot pressing process at bamboo fibre, surface conditioning agent is heated and the curing bamboo fibre surface that is wrapped in, and form firmly combination, can improve interface binding power between bamboo fibre and matrices of composite material (polyethylene and polypropylene plastics) more than 46% simultaneously.
The specific embodiment
Below in conjunction with specific embodiment, the present invention will be further described.
Embodiment mono-
A kind of bamboo fibre surface conditioning agent, is characterized in that: it is by raw material formalin 180-190kg, melamine 105-110kg, polyvinyl alcohol 90-95kg, sodium hydrate aqueous solution 5-8kg, ethanolic solution 100-120kg, ammonium polyphosphate 40-50kg is prepared from.The quality percentage composition of described formalin is 36.5-37.5%; The quality percentage composition of described melamine is for being greater than 99%; The quality percentage composition of described polyvinyl alcohol is 98-99%, and average degree of polymerization is 1700-1800, and alcohol Jie degree is more than 99.8%; The quality percentage composition of described sodium hydrate aqueous solution is 27-32%; The quality percentage composition of described ethanol water is more than 95%; The quality percentage composition of described ammonium polyphosphate is for being greater than 98%, the degree of polymerization 20 left and right.
The preparation method of this finishing agent is:
1, formalin 180-190kg is added to reactor, start agitator, with pH value 8.5 ~ 9.0 in sodium hydrate aqueous solution adjusting reactor, open the heating valve of reactor, start to be heated to 45 ℃.
The compound of melamine 105-110kg and polyvinyl alcohol 90-95kg is evenly added reactor by 2, after reinforced, in 30 minutes, make temperature in reactor evenly rise to 92 ℃, at 92 ± 2 ℃, be incubated 45 minutes, this stage pH value regulates and remains between 7.0 ~ 7.5.
3, get 10ml water and join in 20ml graduated cylinder, add 10 reactant liquors (about 0.5ml) to observe muddy temperature, in the time that muddy temperature reaches 24 ~ 25 ℃, immediately reactant liquor is cooled to 75 ℃ and adds below first alcohol 60-72kg.
4, add after first alcohol, get 10ml water and 5ml reactant liquor, and add successively in 20ml graduated cylinder, when the muddy temperature of observation mixed liquor drops to 15 ℃, then adjust pH value 8.7 ~ 8.9 with NaOH, with 20 minutes, reactant liquor is continued to be warming up to 90 ± 2 ℃, this stage pH value should remain on 7.5 ~ 8.0.
5, get 10ml water and 5ml reactant liquor, and add successively in 20ml graduated cylinder, when the muddy temperature of observation mixed liquor drops to 23 ~ 24 ℃, the cooling second batch alcohol 40-48kg that adds immediately, and adjust pH value between 7.0 ~ 7.2 with NaOH, continue to be cooled to 40 ℃ of following blowings and store for subsequent use.
6, quality index
Resin content: 40 ~ 50%
Viscosity: 15 ~ 25 ° of E 0.015 ~ 0.025(Pa)
Outward appearance: colourless or light yellow transparent liquid
Free aldehyde: be less than 0.05%
Storage period: 30 days (15 ~ 20 ℃)
Turbidity: 20 ~ 30 ℃ (getting the muddy temperature that one times of resin adds two times of water)
7, spray application to before bamboo fibre surface, it is 10% ammonium polyphosphate that above-mentioned resin is added to mass percent, sprays the surface in bamboo fibre after mixing.
Embodiment bis-
A kind of bamboo fibre surface conditioning agent, is characterized in that: it is by raw material formalin 180-190kg, melamine 105-110kg, polyvinyl alcohol 90-95kg, sodium hydrate aqueous solution 5-8kg, ethanolic solution 100-120kg, ammonium polyphosphate 40-50kg is prepared from.The quality percentage composition of described formalin is 36.5-37.5%; The quality percentage composition of described melamine is for being greater than 99%; The quality percentage composition of described polyvinyl alcohol is 98-99%, and average degree of polymerization is 1700-1800, and alcohol Jie degree is more than 99.8%; The quality percentage composition of described sodium hydrate aqueous solution is 27-32%; The quality percentage composition of described ethanol water is more than 95%; The quality percentage composition of described ammonium polyphosphate is for being greater than 98%, the degree of polymerization 20 left and right.
The preparation method of this finishing agent is:
1, formalin 180-190kg is added to reactor, start agitator, with pH value 8.5 ~ 9.0 in sodium hydrate aqueous solution adjusting reactor, open the heating valve of reactor, start to be heated to 45 ℃.
2, the compound of first melamine 63-66kg and polyvinyl alcohol 54-57kg is evenly added to reactor, after reinforced, in 30 minutes, make temperature in reactor evenly rise to 88 ℃, at 88 ± 2 ℃, be incubated 25 minutes, this stage pH value regulates and remains between 7.0 ~ 7.5.
3, the compound of the melamine 42-44kg of second batch and polyvinyl alcohol 36-38kg is evenly added to reactor, at 88 ± 2 ℃, be incubated 20 minutes, this stage pH value regulates and remains between 7.0 ~ 7.5.
4, get 10ml water and join in 20ml graduated cylinder, add 10 reactant liquors (about 0.5ml) to observe muddy temperature, in the time that muddy temperature reaches 24 ~ 25 ℃, immediately reactant liquor is cooled to 75 ℃ and adds below first alcohol 60-72kg.
5, add after first alcohol, get 10ml water and 5ml reactant liquor, and add successively in 20ml graduated cylinder, when the muddy temperature of observation mixed liquor drops to 15 ℃, then adjust pH value 8.7 ~ 8.9 with NaOH, with 20 minutes, reactant liquor is continued to be warming up to 90 ± 2 ℃, this stage pH value should remain on 7.5 ~ 8.0.
6, get 10ml water and 5ml reactant liquor, and add successively in 20ml graduated cylinder, when the muddy temperature of observation mixed liquor drops to 23 ~ 24 ℃, the cooling second batch alcohol 40-48kg that adds immediately, and adjust pH value between 7.0 ~ 7.2 with NaOH, continue to be cooled to 40 ℃ of following blowings and store for subsequent use.
7, quality index
Resin content: 40 ~ 50%
Viscosity: 15 ~ 25 ° of E 0.015 ~ 0.025(Pa)
Outward appearance: colourless or light yellow transparent liquid
Free aldehyde: be less than 0.03%
Storage period: 30 days (15 ~ 20 ℃)
Turbidity: 20 ~ 30 ℃ (getting the muddy temperature that one times of resin adds two times of water)
8, spray application to before bamboo fibre surface, it is 10% ammonium polyphosphate that above-mentioned resin is added to mass percent, sprays the surface in bamboo fibre after mixing.
Embodiment tri-
A kind of bamboo fibre surface conditioning agent, is characterized in that: it is by raw material formalin 180-190kg, melamine 105-110kg, polyvinyl alcohol 90-95kg, sodium hydrate aqueous solution 5-8kg, ethanolic solution 100-120kg, ammonium polyphosphate 40-50kg is prepared from.The quality percentage composition of described formalin is 36.5-37.5%; The quality percentage composition of described melamine is for being greater than 99%; The quality percentage composition of described polyvinyl alcohol is 98-99%, and average degree of polymerization is 1700-1800, and alcohol Jie degree is more than 99.8%; The quality percentage composition of described sodium hydrate aqueous solution is 27-32%; The quality percentage composition of described ethanol water is more than 95%; The quality percentage composition of described ammonium polyphosphate is for being greater than 98%, the degree of polymerization 20 left and right.
The preparation method of this finishing agent is:
1, formalin 180-190kg is added to reactor, start agitator, with pH value 8.5 ~ 9.0 in sodium hydrate aqueous solution adjusting reactor, open the heating valve of reactor, start to be heated to 45 ℃.
2, melamine 105-110kg is evenly added to reactor, after feeding in raw material, make temperature in reactor evenly rise to 88 ℃ in 30 minutes, at 88 ± 2 ℃, be incubated 10 minutes, this stage pH value regulates and remains between 7.0 ~ 7.5.
3, polyvinyl alcohol 90-95kg is evenly added to reactor, at 88 ± 2 ℃, be incubated 40 minutes, this stage pH value regulates and remains between 7.0 ~ 7.5.
4, get 10ml water and join in 20ml graduated cylinder, add 10 reactant liquors (about 0.5ml) to observe muddy temperature, in the time that muddy temperature reaches 24 ~ 25 ℃, immediately reactant liquor is cooled to 75 ℃ and adds below first alcohol 60-72kg.
5, add after first alcohol, get 10ml water and 5ml reactant liquor, and add successively in 20ml graduated cylinder, when the muddy temperature of observation mixed liquor drops to 15 ℃, then adjust pH value 8.7 ~ 8.9 with NaOH, with 20 minutes, reactant liquor is continued to be warming up to 90 ± 2 ℃, this stage pH value should remain on 7.5 ~ 8.0.
6, get 10ml water and 5ml reactant liquor, and add successively in 20ml graduated cylinder, when the muddy temperature of observation mixed liquor drops to 23 ~ 24 ℃, the cooling second batch alcohol 40-48kg that adds immediately, and adjust pH value between 7.0 ~ 7.2 with NaOH, continue to be cooled to 40 ℃ of following blowings and store for subsequent use.
7, quality index
Resin content: 40 ~ 50%
Viscosity: 15 ~ 25 ° of E 0.015 ~ 0.025(Pa)
Outward appearance: colourless or light yellow transparent liquid
Free aldehyde: be less than 0.03%
Storage period: 30 days (15 ~ 20 ℃)
Turbidity: 20 ~ 30 ℃ (getting the muddy temperature that one times of resin adds two times of water)
8, spray application to before bamboo fibre surface, it is 10% ammonium polyphosphate that above-mentioned resin is added to mass percent, sprays the surface in bamboo fibre after mixing.
Can find out by above-mentioned example, the present invention relates to a kind of composite bamboo fibre surface conditioning agent, surface conditioning agent divides and comprises A and two kinds of components of B, wherein, A component is production of melamine formaldehyde resin surface conditioning agent, in production of melamine formaldehyde resin component, introduce the polyvinyl alcohol with vinyl, made to have embedded vinyl on the strand of melamine resin; B component is ammonium polyphosphate, mixes, then spray application to bamboo fibre surface when use according to A component with B component with the deal of 10:1.
Further, described production of melamine formaldehyde resin comprises following component, and as follows according to weight proportion:
Formalin 180-190kg
Melamine 105-110kg
Polyvinyl alcohol 90-95kg
Above-mentioned material is placed in to reactor to react and makes production of melamine formaldehyde resin.
Further, in production of melamine formaldehyde resin, be added with the sodium hydrate aqueous solution that regulates formalin pH value in reactor, to guarantee in reactor that pH value is as 8.5-9.0.
Further, the quality percentage composition of described formalin is 36.5-37.5%; The quality percentage composition of described melamine is for being greater than 99%; The quality percentage composition of described polyvinyl alcohol is 98-99%, and average degree of polymerization is 1700-1800, and alcohol Jie degree is more than 99.8%; The quality percentage composition of described sodium hydrate aqueous solution is 27-32%.
The preparation method of above-mentioned production of melamine formaldehyde resin surface conditioning agent is,
1, choose formalin, melamine and polyvinyl alcohol according to proportioning;
2, formalin is added to reactor, start agitator, with pH value 8.5-9.0 in sodium hydrate aqueous solution adjusting reactor, open the heating valve of reactor, start to be heated to 45 ℃;
3, by melamine and polyvinyl alcohol separately or mix and evenly add in batches reactor, after reinforced, in 30 minutes, make temperature in reactor evenly rise to 88-92 ℃, after arrival design temperature, be incubated 10-45 minute, this stage pH value regulates and remains between 7.0-7.5; Naturally cooling after insulation;
4, start to lower the temperature, observe muddy temperature from extracting reaction solution sample in reactor continuously, in the time that muddy temperature reaches 24-25 ℃, immediately reactant liquor is cooled to below 75 ℃, and adds first alcohol 60-72kg;
5, add after first alcohol, sub-sampling again, and the muddy temperature of continuation observation mixed liquor, in the time that muddy temperature continues to drop to 15 ℃, adjust pH value at 8.7-8.9 with NaOH, with 20 minutes, reactant liquor is continued to be warming up to 90 ± 2 ℃, after arrival design temperature, be incubated 10-45 minute, this stage pH value should remain on 7.5-8.0, and temperature retention time is to rear cooling naturally;
6, start to lower the temperature, observe muddy temperature from extracting reaction solution sample in reactor continuously, and observe the muddy temperature of mixed liquor, in the time that muddy temperature drops to 23-24 ℃, the cooling second batch alcohol 40-48kg that adds immediately, and adjust pH value between 7.0-7.2 with NaOH, and continue to be cooled to 40 ℃ of following blowings storages for subsequent use, make A component;
7, choose B component, B component is for directly choosing ammonium polyphosphate, and ammonium polyphosphate quality percentage composition is for being greater than 98%, the degree of polymerization 20 left and right.
8, spray application to before bamboo fibre surface, it is in 10% B component that above-mentioned A component is added to mass percent, sprays the surface in bamboo fibre after mixing.
Further, be more than 95% at the quality percentage composition of the added ethanol water of preparation method; The quality percentage composition of described ammonium polyphosphate is for being greater than 98%, the degree of polymerization 20 left and right.
The present invention has following characteristics: resin body composition prepared by the present invention is a kind of melamine resin bamboo wood to good combination performance, in component, introduce the polyvinyl alcohol with vinyl simultaneously, make to have embedded vinyl on the strand of melamine resin, and vinyl all has extraordinary compatibility with polyethylene and polypropylene plastics, therefore resin of the present invention had both had the good combination with bamboo fibre, have again and polyethylene and the good compatibility of polypropylene plastics, therefore while utilizing bamboo fiber reinforcement polyethylene and polypropylene plastics to manufacture composite, can improve well the compatibility of compound interface, thereby reach the object that improves composite property.Ammonium polyphosphate is a kind of good fire retardant in addition, why the present invention selects the finishing agent timing of ammonium polyphosphate to add, main cause is that resin needs certain storage period, be generally 20-30 days, and resin has acid-sensitive, and ammonium polyphosphate is faintly acid, so in order to guarantee enough storage periods of resin, so just allotment adds ammonium polyphosphate in the time putting on bamboo fibre, in the time of allotment, add ammonium polyphosphate can make the pH value of finishing agent decline, and can promote solidifying of resin body composition, surface conditioning agent of the present invention generally sprays on wet bamboo fibre surface, carry out high temperature drying or manufacture in bamboo fiber composite material hot pressing process at bamboo fibre, surface conditioning agent is heated and the curing bamboo fibre surface that is wrapped in, and form firmly combination, can improve interface binding power between bamboo fibre and matrices of composite material (polyethylene and polypropylene plastics) more than 46% simultaneously.
Obviously, above-described embodiment is the several examples of the present invention in order to illustrate that the present invention is cited, and any those ordinary skill in the art's simple change and replacement are all within protection of the present invention.
Claims (6)
1. a composite bamboo fibre surface conditioning agent, it is characterized in that, surface conditioning agent divides and comprises A and two kinds of components of B, wherein, A component is production of melamine formaldehyde resin surface conditioning agent, in production of melamine formaldehyde resin component, introduce the polyvinyl alcohol with vinyl, made to have embedded vinyl on the strand of melamine resin; B component is ammonium polyphosphate, mixes, then spray application to bamboo fibre surface when use according to A component with B component with the deal of 10:1.
2. composite according to claim 1 bamboo fibre surface conditioning agent, is characterized in that, described production of melamine formaldehyde resin comprises following component, and as follows according to weight proportion:
Formalin 180-190kg
Melamine 105-110kg
Polyvinyl alcohol 90-95kg
Above-mentioned material is placed in to reactor to react and makes production of melamine formaldehyde resin.
3. composite according to claim 2 bamboo fibre surface conditioning agent, is characterized in that, is added with the sodium hydrate aqueous solution that regulates formalin pH value in reactor, to guarantee in reactor that pH value is as 8.5-9.0 in production of melamine formaldehyde resin.
4. composite according to claim 2 bamboo fibre surface conditioning agent, is characterized in that, the quality percentage composition of described formalin is 36.5-37.5%; The quality percentage composition of described melamine is for being greater than 99%; The quality percentage composition of described polyvinyl alcohol is 98-99%, and average degree of polymerization is 1700-1800, and alcohol Jie degree is more than 99.8%; The quality percentage composition of described sodium hydrate aqueous solution is 27-32%.
5. a preparation method for composite use bamboo fibre surface conditioning agent described in claim 1, comprises the following steps:
1) choose formalin, melamine and polyvinyl alcohol according to proportioning;
2) formalin is added to reactor, start agitator, with pH value 8.5-9.0 in sodium hydrate aqueous solution adjusting reactor, open the heating valve of reactor, start to be heated to 45 ℃;
3) by melamine and polyvinyl alcohol separately or mix and evenly add in batches reactor, after reinforced, in 30 minutes, make temperature in reactor evenly rise to 88-92 ℃, after arrival design temperature, be incubated 10-45 minute, this stage pH value regulates and remains between 7.0-7.5; Naturally cooling after insulation;
4) start to lower the temperature, observe muddy temperature from extracting reaction solution sample in reactor continuously, in the time that muddy temperature reaches 24-25 ℃, immediately reactant liquor is cooled to below 75 ℃, and adds first alcohol 60-72kg;
5) add after first alcohol, sub-sampling again, and the muddy temperature of continuation observation mixed liquor, in the time that muddy temperature continues to drop to 15 ℃, adjust pH value at 8.7-8.9 with NaOH, with 20 minutes, reactant liquor is continued to be warming up to 90 ± 2 ℃, after arrival design temperature, be incubated 10-45 minute, this stage pH value should remain on 7.5-8.0, and temperature retention time is to rear cooling naturally;
6) start to lower the temperature, observe muddy temperature from extracting reaction solution sample in reactor continuously, and observe the muddy temperature of mixed liquor, in the time that muddy temperature drops to 23-24 ℃, the cooling second batch alcohol 40-48kg that adds immediately, and adjust pH value between 7.0-7.2 with NaOH, and continue to be cooled to 40 ℃ of following blowings storages for subsequent use, make A component;
7) choose B component, B component is for directly choosing ammonium polyphosphate, and ammonium polyphosphate quality percentage composition is for being greater than 98%, the degree of polymerization 20 left and right;
8) spray application to before bamboo fibre surface, it is in 10% B component that above-mentioned A component is added to mass percent, sprays the surface in bamboo fibre after mixing.
6. bamboo fibre surface conditioning agent preparation method for composite according to claim 5, is characterized in that, is more than 95% at the quality percentage composition of the added ethanol water of preparation method; The quality percentage composition of described ammonium polyphosphate is for being greater than 98%, the degree of polymerization 20 left and right.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107841904A (en) * | 2017-10-19 | 2018-03-27 | 袁玲燕 | A kind of preparation method of bamboo fibre conducting polymer paper |
| CN108018713A (en) * | 2017-12-14 | 2018-05-11 | 烟台燕晟信息技术有限公司 | A kind of aramid fiber surface treatment fluid and its preparation and application |
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| CN101280523A (en) * | 2008-04-17 | 2008-10-08 | 中国人民解放军总后勤部军需装备研究所 | Composite type flame-retardant adhesive for high-strength terylene filament fabric and flame-retardant finishing method |
| CN101649553A (en) * | 2009-09-22 | 2010-02-17 | 西北工业大学 | Method for preparing PBO fibre composite material and special surface treating agent thereof |
| CN102105544A (en) * | 2007-07-02 | 2011-06-22 | 格林百奥生态材料科技（上海）有限公司 | Polymeric composition for cellulosic materials binding and modification |
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2014
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| CN102105544A (en) * | 2007-07-02 | 2011-06-22 | 格林百奥生态材料科技（上海）有限公司 | Polymeric composition for cellulosic materials binding and modification |
| CN101280523A (en) * | 2008-04-17 | 2008-10-08 | 中国人民解放军总后勤部军需装备研究所 | Composite type flame-retardant adhesive for high-strength terylene filament fabric and flame-retardant finishing method |
| CN101649553A (en) * | 2009-09-22 | 2010-02-17 | 西北工业大学 | Method for preparing PBO fibre composite material and special surface treating agent thereof |
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| 周钢等: "竹粉/ 高密度聚乙烯复合材料性能研究", 《中南林业科技大学学报》, vol. 32, no. 1, 31 January 2012 (2012-01-31), pages 113 - 116 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107841904A (en) * | 2017-10-19 | 2018-03-27 | 袁玲燕 | A kind of preparation method of bamboo fibre conducting polymer paper |
| CN108018713A (en) * | 2017-12-14 | 2018-05-11 | 烟台燕晟信息技术有限公司 | A kind of aramid fiber surface treatment fluid and its preparation and application |
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| CN103866570B (en) | 2016-02-03 |
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