CN103664025B - A kind of method for improving fibre bundle and potassium magnesium phosphate cement-based material adhesive property - Google Patents
A kind of method for improving fibre bundle and potassium magnesium phosphate cement-based material adhesive property Download PDFInfo
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Abstract
A kind of method for improving fibre bundle and potassium magnesium phosphate cement-based material adhesive property, is related to a kind of manufacturing technology of fiber reinforcement potassium magnesium phosphate cement composite material.The tencel wetting agent that the method is prepared, with permeability is strong, quick solidifying, curing rate is controllable, adhesion strength is high, acidproof, pressure and high temperature resistant the features such as.In the fibre bundle of Jing its cured, the network structure of Si O Si cellosilk is bondd it is integral, all fibres silk can stress simultaneously, the more untreated fibre bundle of axial tension of fibre bundle improves 2～3 times.The fiber reinforcement MPC based composites prepared with the fibre bundle of its cured, the dead roasting magnesia powder for being deposited on fibre bundle surface take part in the hydration reaction of MPC matrixes, enhance fibre bundle to bond with MPC basal body interfaces, pulling capacity of the fibre bundle in MPC matrixes improves 15～40% compared with the fibre bundle that epoxy resin wetting agent is processed.The present invention is simple, easy to use, and cost is only the 1/10～1/6 of epoxy resin fiber wetting agent.
Description
Technical field
The present invention relates to the making skill of a kind of New Building Materials, especially fiber reinforcement potassium magnesium phosphate cement composite material
Art, particularly a kind of method for improving fibre bundle and potassium magnesium phosphate cement-based material adhesive property.
Background technology
Since China reforms and opens up to the outside world, national economy obtains rapid growth, and " scientific and technical innovation, autonomous innovation " has become China's mesh
The main flow of front industrial development, progressively to intensive style, energy-saving and emission-reduction, the direction of low-carbon (LC) develop China's industry.The soil of China in recent years
Wood engineering construction is rapidly developed, and it is industrial vigorous to bring downstream building material industry, but in various cement-base composite material skills
There is blemish in an otherwise perfect thing in art.Jing retrieves the current overview of domestic and international fiber reinforcement magnesium phosphate cement based composites manufacturing technology：Phosphorus
Sour magnesium cement (MPC) is according to a definite proportion by dead roasting magnesium oxide with soluble phosphate, chemical addition agent and mineral admixture
Example, it take phosphate as the inorganic gel for cohering phase to change generation in acid condition by soda acid chemical reaction and physical action
Material；According to the difference of phosphate species used, ammoniomagnesium phosphate cement (with ammonium phosphate as acid constituents) and potassium phosphate can be divided into
Magnesium cement (with potassium phosphate as acid constituents) etc..Such material by chemical bonds, possesses silicates glue at normal temperatures
The main feature of gel material and ceramic material, i.e. low-temperature setting, high early strong, high volume stability, caking property are strong, hardenite partially in
Property and good durability etc..Compare with portland cement, MPC has more preferable adhesion strength and the compatibility with fiber, by glass
The mechanical property and durability of the MPC based composites of fiber, polypropylene fibre and Stainless-steel fibre is superior to portland cement
Based composites, mix appropriate polypropylene fibre or steel fibre can make MPC base mortars show strain hardening characteristic and higher
Bent toughness, and preferable stability is still kept under hygrothermal environment.Short fiber reinforced cement-based material is used, its cracking resistance can be improved
Property and fragility, but composite tensile strength and fracture resistance improve it is limited；With fabric fibre Shu Zengqiang cement-based materials, knit
Fibres beam rove can be main to arrangement along component stress, and fiber is effectively improved to the enhancing efficiency of matrix, the composite wood
Material is with good bearing capacity and toughness；Strengthen cement-based material with assorted fibre (chopped fiber and fabric fibre beam), utilize
The mutual supplement with each other's advantages of two kinds of fibers can obtain more excellent cracking resistance, Crack Control ability, and obtain the cement of more high bearing capacity
Based composites.
In the technology of preparing of fiber reinforced cement-based composite material, cement matrix is changed with fiber interface adhesive property
It is kind, it is related to the raising of intensity, toughness and the performance of resisting cracking of fiber reinforced cement-based composite material, directly affects fiber reinforcement
The range of application of cement-base composite material.Cement matrix is improved as follows with the major technique of fibre bundle interfacial bond property：
(1) strengthen the adhesive property of cement matrix and fibre bundle interface with thin cement slurry.With thin cement slurry dip-coating fibre bundle,
Cellosilk in infiltrated fiber beam, can be sticked into one after solidification by thin cement slurry energy well.The axial tensile-strength of fibre bundle with
And its be improved to some extent with the adhesion strength of cement matrix.But thin cement slurry curing rate is slow, and adhesion strength is low, and
Cement mortar hardenite in alkalescence has corrosiveness to glass fibre.
(2) strengthen the adhesive property of cement matrix and fibre bundle interface with epoxy resin wetting agent.Infiltrated with epoxy resin
Agent infiltration and cured fiber beam so as to which tensile strength and initial elastic modulus are greatly improved.Due to the fibre bundle of Jing process
Middle cellosilk mutually bond it is integral, during tension the defective cellosilk resistance to tension in part can not be closed on completely cellosilk and
When overlap joint repair, it is ensured that the cooperative bearing of all fibres silk.The fibre bundle of Jing process is also had with the adhesion strength of cement matrix
A certain degree of raising.But epoxy resin wetting agent high cost, curing rate are slow, and non-refractory.
(3) strengthen the adhesive property of cement matrix and fibre bundle interface with the scab of epoxy resin wetting agent.Epoxy is applied
The quartz sand of resin wetting agent and the fibre bundle surface cosmid footpath that not yet solidifies for 0.6mm～1.2mm, it is possible to increase fibre bundle table
The friction, capability in face, or even one kind can be generated with matrix and be engaged effect, so as to further improve fibre bundle and cement matrix
Cohesive force.But the glued sand grains in surface is in stress, easily peels off from fibre bundle surface, and drive the rove of surface layer together to shell
Fall, cause fiber failure, it is impossible to continue to carry.
Therefore, the scientific and technical personnel of colleges and universities, related scientific research mechanism and enterprise improve fibre bundle and phosphorus in constantly research and probe
The technology of sour potassium magnesium cement-based material adhesive property, although make certain gains, but remain not yet in practice
The technical barrier for overcoming.
The content of the invention
The invention reside in overcoming the above not enough, there is provided one kind improves fibre bundle and potassium magnesium phosphate cement-based material caking property
Can method, the tencel wetting agent prepared, with permeability is strong, quick solidifying, curing rate is controllable, adhesion strength is high,
The features such as acidproof, pressure and high temperature resistant.The fibre bundle axial tension of Jing tencels wetting agent process is significantly improved, and uses
Which prepares fiber reinforcement MPC based composites, and with excellent cracking resistance, Crack Control ability, fibre bundle is in MPC sills
The fibre bundle pulling capacity that pulling capacity is processed higher than Jing epoxy resin wetting agent.The present invention is simple, easy to use, energy-conservation
Environmental protection, cost are relatively low.
The present invention solves the technical step that adopted of its technical problem：(1) sodium silicate aqueous solution is taken as base stock,
For the neutral sodium silicate aqueous solution of high mode need to be selected during glass fiber bundle, for other kinds fibre bundle when select modulus
Low alkaline silicate sodium water solution；(2) prodan is taken as firming agent, dead roasting magnesia powder as filler, by appropriate fluorine silicon
Sour sodium and dead roasting magnesia powder are mixed in sodium silicate aqueous solution, are stirred, are obtained the controllable tencel of curing rate
Wetting agent；(3) with the uniform brushing fibre bundle surface of tencel wetting agent, abundant wetting fibre beam, use after fiber beam-curable
In preparation fiber reinforcement MPC based composites.
A kind of fibre bundle that improves is as follows with the detailed process of the method for potassium magnesium phosphate cement-based material adhesive property：
First step：Modulus is selected to be sodium silicate aqueous solution that 2.6～3.0, Baume degrees are 38.4～50.3 as basic
Component.Consider that alkaline silicate sodium water solution easily produces corrosion to glass fibre, select the neutral sodium silicate water of high mode (n=3)
Solution is used for glass fiber bundle, the fibre bundle (carbon fiber, basalt fibre etc.) of other kinds may be selected modulus it is low (n=2.6～
2.8) alkaline silicate sodium water solution.Take technical grade hexafluosilicic acid sodium powder to aoxidize as one of firming agent, the base stock of MPC dead roasting
Magnesium powder (content of MgO >=95%, 2.0～2.5m of specific surface area2/ kg) as filler.
Second step：(its volume is according to gas epidemic disaster, the modulus of waterglass and ripple to take the prodan of 0～10 mass parts
U.S. degree, the curing rate etc. for requiring are appropriate within the above range to be adjusted), dead roasting magnesia powder (its volume of 10～20 mass parts
Suitably adjusted according to the modulus and Baume degrees of sodium silicate aqueous solution within the above range) and 100 mass parts sodium silicate aqueous solution；
First prodan is added in sodium silicate aqueous solution, with planetary liquid stirrers with the rotating speed of 60～90r/min stirring 1～
2min, makes prodan crystal fully dissolve；The rotating speed for adjusting planetary liquid stirrers afterwards is 30r/min or so, will be dead
Burned magnesium oxide powder is slowly added in sodium silicate aqueous solution, then with the rotating speed stirring 2～3min of mixed liquor of 60～90r/min, is obtained
The controllable tencel wetting agent of curing rate.
Third step：Fibre bundle is hung, with the uniform brushing fibre bundle surface of tencel wetting agent, abundant wetting fibre
Beam；The wherein strong sodium silicate aqueous solution of permeability is rapidly permeated between cellosilk, the part dead roasting magnesia powder deposition of poor permeability
On fibre bundle surface；As the carbonization and dehydration crystallization of sodium silicate aqueous solution, tencel wetting agent progressively solidify, define-
The network structure of Si-O-Si-, cellosilk is bondd integral；
Four steps：MPC base material slurry bodies, moulding by casting and closely knit, wherein additionally arrange having consolidated are prepared by certain match ratio
Change the fibre bundle for processing, be prepared into fiber reinforcement MPC based composites, wherein the dead roasting magnesia powder granule ginseng on fibre bundle surface
With the hydration reaction of MPC matrixes, hydrated product is by the interfacial adhesion of fibre bundle and MPC matrixes.
The invention has the beneficial effects as follows：The tencel wetting agent that the method is prepared, with permeability is strong, quick solidifying, solid
Change speed it is controllable, adhesion strength is high, acidproof, pressure and high temperature resistant the features such as.The fiber of Jing tencel wetting agent cured
Cellosilk is bondd integral, the defective cellosilk resistance to tension in part during tension by the network structure of Shu Zhong ,-Si-O-Si-
Cellosilk can not be closed on completely and overlapped repairing in time, it is ensured that all fibres silk simultaneously stress, at the axial tension of fibre bundle
The fibre bundle of reason improves 2～3 times.Fiber reinforcement MPC base composite woods are prepared with the fibre bundle of tencel wetting agent cured
Material, with excellent cracking resistance, Crack Control ability.It is deposited in the dead roasting magnesia powder and MPC sills on fibre bundle surface
Phosphate reaction generates phosphate hydras, makes fibre bundle produce chemical binding force with MPC basal body interfaces, and fibre bundle is in MPC bases
Pulling capacity in body can improve 15～40% compared with the pulling capacity of the fibre bundle of Jing epoxy resin wetting agent process.The preparation of the invention
Process is simple, easy to use, cost is only the 1/10～1/6 of epoxy resin fiber wetting agent.
Description of the drawings
Fig. 1 is a kind of technological process for improving fibre bundle and the method for potassium magnesium phosphate cement-based material adhesive property.
The basalt of the Different treatments that Fig. 2 is untreated, applies epoxy resin wetting agent, apply tencel wetting agent is fine
The axial tension effect diagram of dimension beam.
The basalt of the Different treatments that Fig. 3 is untreated, applies epoxy resin wetting agent, apply tencel wetting agent is fine
Dimension pulling capacity effect diagram of the beam in MPC matrixes.
Fig. 4 be it is untreated, apply epoxy resin wetting agent, apply tencel wetting agent Different treatments glass fibre
The schematic diagram of the microstructure of beam.
Fig. 5 be it is untreated, apply epoxy resin wetting agent, apply tencel wetting agent Different treatments carbon fiber bundle
With the schematic diagram of the interfacial microstructure of MPC matrixes.
Fig. 6 be apply tencel wetting agent carbon fiber bundle in MPC matrixes, the dead roasting magnesium oxide of fibre bundle surface hydration
The schematic diagram of the microstructure of powder.
Specific embodiment
It is presented herein below in conjunction with the accompanying drawings and embodiments that the invention will be further described：
In FIG：(1) under natural environmental condition, by sodium silicate aqueous solution, prodan and dead roasting magnesia powder according to
Certain proportion mix homogeneously, makes tencel wetting agent；
(2) fibre bundle is hung, with the uniform brushing fibre bundle surface of tencel wetting agent, abundant wetting fibre beam；Its
The strong sodium silicate aqueous solution of middle permeability is rapidly permeated between cellosilk, and the part dead roasting magnesia powder of poor permeability is deposited on fiber
Beam surface；As the carbonization and dehydration crystallization of sodium silicate aqueous solution, tencel wetting agent progressively solidify ,-Si-O- is defined
The network structure of Si-, cellosilk is bondd integral；
(3) MPC base material slurry bodies, moulding by casting and closely knit, wherein additionally arranging cured process are prepared by certain match ratio
Fibre bundle, is prepared into fiber reinforcement MPC based composites；The dead roasting oxidation on the fibre bundle surface of Jing tencels wetting agent process
Magnesium powder granule participates in the hydration reaction of MPC matrixes, enhances the interfacial adhesion of fibre bundle and MPC matrixes.
Whole preparation process can be divided into by preparation order by three phases according to the technical process of Fig. 1：First stage is new
The preparation of fiber type wetting agent, second stage are that with tencel wetting agent dip-coating, cured fiber beam, the phase III is with solid
The fibre bundle of change prepares fiber reinforcement MPC based composites.
In fig. 2：For the axial tension of the basalt fibre beam of Different treatments, in the axial tension for carrying out fibre bundle
During test, fibre bundle two ends are applied into epoxy resin wetting agent, centre is stayed part untreated, axial tension test is carried out after solidification,
Obtain the axial tension of untreatment fiber beam.During test, untreated, painting epoxy resin wetting agent is employed to basalt fibre beam
With apply tencel three kinds of surface treatment modes of wetting agent, axial tension test result shows, applies epoxy resin wetting agent and new
The axial tension of the basalt fibre beam of fiber type wetting agent is increased substantially, and tencel wetting agent is to basalt fibre beam
Potentiation be better than epoxy resin wetting agent.
In figure 3：For the pulling capacity of the basalt fibre beam in MPC matrixes of Different treatments, wherein basalt is fine
Dimension beam is 10mm with the contact surface length of MPC matrixes, and MPC matrix ages are 3d, and during test, basalt fibre Shu Junwei is extracted brokenly
It is bad.Fibre bundle exposed part is applied into epoxy resin wetting agent, embedment MPC body portions are untreated, and pulling capacity examination is carried out after solidification
Test, obtain the pulling capacity of untreatment fiber beam.Result of the test shows to apply the profound of epoxy resin wetting agent and tencel wetting agent
Military rock fibre bundle is higher by more than one times in the more untreated basalt fibre beam of pulling capacity in MPC matrixes, and applies tencel
Pulling capacity of the basalt fibre beam of wetting agent in MPC sills is higher than the basalt fibre beam for applying epoxy resin wetting agent.
In the diagram：For the microstructure of the glass fiber bundle of Different treatments.It is fine in undressed glass fiber bundle
The dimension neat dispersed arrangement of silk, cellosilk respective independent stress during glass fiber bundle tension；Apply the glass fibers of epoxy resin wetting agent
In dimension beam, due to gap integral, the glass fiber bundle tension that cellosilk bonds of epoxy resin wetting agent fiberfill fibers silk
When cellosilk energy cooperative bearing；Apply in the glass fiber bundle of tencel wetting agent, wetting agent also fills up filametntary gap simultaneously
Cellosilk is bondd integral, glass fiber bundle surface adhesion small amounts magnesium powder, during glass fiber bundle tension, cellosilk is also
Can cooperative bearing.
In Figure 5：For the interfacial microstructure of the carbon fiber bundle and MPC matrixes of Different treatments.It is any for not making
The carbon fiber bundle of process, as the permeability of MPC slurries is limited, only a small amount of MPC hardenites are filled between carbon fiber, it is impossible to will
Carbon fiber wire is bonded to one, the most of carbon fiber wire still dispersed arrangement being embedded in MPC matrixes, it is impossible to form cooperative bearing
Effect；The carbon fiber bundle for applying epoxy resin wetting agent is tight with MPC basal body interfaces bonding, will inside wetting agent infiltrated fiber beam
Cellosilk is securely bonded to together, and carbon fiber bundle surface is more smooth；Apply the carbon dimension beam and MPC matrixes circle of tencel wetting agent
Face bonding is tight, and the space between cellosilk is filled up by wetting agent, and cellosilk is securely bonded to together, and carbon fiber bundle surface is glued
Adhere to some dead roasting magnesia powder granules.
In figure 6：Apply tencel wetting agent carbon fiber bundle in MPC matrixes, the dead roasting of carbon fiber bundle surface hydration
Magnesia powder granule take part in the hydration reaction of MPC matrixes, and the hydrated product for having lenticular on its surface is produced.
Embodiment 1：Take the sodium silicate of the prodan of 2 mass parts, the dead roasting magnesia powder of 10 mass parts and 100 mass parts
Aqueous solution (it is 50.3 that modulus is 3.0, Baume degrees), with planetary liquid stirrers with the rotating speed stirring mixing of 60～90r/min
3～5min of liquid, obtains the controllable tencel wetting agent of curing rate.With the uniform brushing glass fiber bundle of tencel wetting agent
Surface, abundant sized glass fibres beam, after the processed 3d of glass fiber bundle (cured), are tried with DL-5000 type electronics pulling force
The machine of testing carries out axial tension test, while applying the glass fibers that epoxy resin wetting agent is processed to untreated glass fiber bundle and Jing
Dimension Shu Jinhang axial tension tests；MPC base material slurry bodies, moulding by casting and closely knit, wherein additionally arranging Jing are prepared by certain match ratio
The glass fiber bundle of different modes process, is prepared into fiber reinforcement MPC based composites pull-out experiments, with DL-5000 type electronics
The glass fibers of the Different treatments that tensile testing machine test is untreated, applies epoxy resin wetting agent, apply tencel wetting agent
Dimension pulling capacity of the beam in MPC matrixes.Test result is shown in Table 1：
The axial tension and the pulling capacity in MPC matrixes of the glass fiber bundle of 1 Different treatments of table
Embodiment 2：Take the prodan of 8～10 mass parts, the dead roasting magnesia powder of 15～20 mass parts and 100 mass parts
Sodium silicate aqueous solution (it is 38.4～48.3 that modulus is 2.6～2.8, Baume degrees), with planetary liquid stirrers with 60～
The rotating speed stirring 2～3min of mixed liquor of 90r/min, obtains the controllable tencel wetting agent of curing rate.Soaked with tencel
The uniform brushing carbon fiber bundle surface of profit agent, fully infiltrates carbon fiber bundle, after the processed 3d of carbon fiber bundle (cured), uses DL-
5000 type electronic tension testers carry out axial tension test, while applying epoxy resin infiltration to untreated carbon fiber bundle and Jing
The carbon fiber bundle that agent is processed carries out axial tension test；MPC base material slurry bodies, moulding by casting and close are prepared by certain match ratio
It is real, wherein additionally arranging the carbon fiber bundle of Jing different modes process, fiber reinforcement MPC based composites pull-out experiments are prepared into, DL- is used
The different disposal side that the test of 5000 type electronic tension testers is untreated, applies epoxy resin wetting agent, apply tencel wetting agent
Pulling capacity of the carbon fiber bundle of formula in MPC matrixes.Test result is shown in Table 2：
The axial tension and the pulling capacity in MPC matrixes of the carbon fiber bundle of 2 Different treatments of table
Embodiment 3：Take the prodan of 8～10 mass parts, the dead roasting magnesia powder of 15～20 mass parts and 100 mass parts
Sodium silicate aqueous solution (it is 38.4～48.3 that modulus is 2.6～2.8, Baume degrees), with planetary liquid stirrers with 60～
The rotating speed stirring 2～3min of mixed liquor of 90r/min, obtains the controllable tencel wetting agent of curing rate.Soaked with tencel
The uniform brushing basalt fibre beam surface of profit agent, fully infiltration basalt fibre beam, after the processed 3d of basalt fibre beam (
Solidification), carry out axial tension test with DL-5000 types electronic tension tester, while to untreated basalt fibre beam and
Jing applies the basalt fibre Shu Jinhang axial tensions test that epoxy resin wetting agent is processed；MPC base materials are prepared by certain match ratio
Slurry body, moulding by casting and closely knit, wherein additionally arranging the basalt fibre beam of Jing different modes process, are prepared into fiber reinforcement MPC
Based composites pull-out experiment, tests untreated, painting epoxy resin wetting agent, Tu Xin with DL-5000 types electronic tension tester
Pulling capacity of the basalt fibre beam of the Different treatments of fiber type wetting agent in MPC matrixes.Test result is shown in Table 3：
The axial tension and the pulling capacity in MPC matrixes of the basalt fibre beam of 3 Different treatments of table
Claims (1)
1. a kind of method for improving fibre bundle and potassium magnesium phosphate cement-based material adhesive property, is characterized in that：Use fiber wetting agent
After dip-coating, cured fiber beam, fiber reinforcement MPC based composites are prepared, detailed process is as follows：
First step：Modulus is selected to be sodium silicate aqueous solution that 2.6～3.0, Baume degrees are 38.4～50.3 as base stock；
Consider that alkaline silicate sodium water solution easily produces corrosion to glass fibre, select the neutral sodium silicate aqueous solution of high mode to be used for glass
Fibre bundle, the fibre bundle of other kinds select the low alkaline silicate sodium water solution of modulus；Technical grade hexafluosilicic acid sodium powder is taken as solid
One of agent, base stock of MPC dead roasting magnesia powder is used as filler；
Second step：Take the prodan of 0～10 mass parts, the dead roasting magnesia powder of 10～20 mass parts and 100 mass parts
Sodium silicate aqueous solution；First prodan is added in sodium silicate aqueous solution, with planetary liquid stirrers with 60～90r/min
Rotating speed stir 1～2min, prodan crystal is fully dissolved；The rotating speed for adjusting planetary liquid stirrers afterwards is 30r/
Min or so, dead roasting magnesia powder is slowly added in sodium silicate aqueous solution, then with the rotating speed stirring mixed liquor 2 of 60～90r/min
～3min, obtains the controllable fiber wetting agent of curing rate；
Third step：Fibre bundle is hung, with the uniform brushing fibre bundle surface of fiber wetting agent, abundant wetting fibre beam；Wherein
The strong sodium silicate aqueous solution of permeability is rapidly permeated between cellosilk, and the part dead roasting magnesia powder of poor permeability is deposited on fibre bundle
Surface；As the carbonization and dehydration crystallization of sodium silicate aqueous solution, fiber wetting agent progressively solidify, the net of-Si-O-Si- is defined
Network structure, cellosilk is bondd integral；
Four steps：MPC base material slurry bodies, moulding by casting and closely knit, wherein additionally arrange having cured place are prepared by certain match ratio
The fibre bundle of reason, is prepared into fiber reinforcement MPC based composites, and the dead roasting magnesia powder granule on wherein fibre bundle surface take part in
The hydration reaction of MPC matrixes, hydrated product is by the interfacial adhesion of fibre bundle and MPC matrixes.
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| CN104609825B (en) * | 2015-02-05 | 2016-09-28 | 泉州三欣新材料科技有限公司 | A kind of heat-insulation and heat-preservation inorganic coating and preparation method thereof |
| CN104804454A (en) * | 2015-05-13 | 2015-07-29 | 宿州学院 | Fiber reinforced organic silicon composite material and preparation method thereof |
| CN106396448B (en) * | 2016-09-14 | 2018-07-10 | 四川力久云智知识产权运营有限公司 | A kind of cement-based material enhancing basalt fibre sizing agent special and preparation method thereof |
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