CN111777357B - PCM wear-resistant protective material and preparation method thereof - Google Patents
PCM wear-resistant protective material and preparation method thereof Download PDFInfo
- Publication number
- CN111777357B CN111777357B CN202010659352.3A CN202010659352A CN111777357B CN 111777357 B CN111777357 B CN 111777357B CN 202010659352 A CN202010659352 A CN 202010659352A CN 111777357 B CN111777357 B CN 111777357B
- Authority
- CN
- China
- Prior art keywords
- component
- wear
- protective material
- resistant protective
- pcm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/14—Polyepoxides
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/2038—Resistance against physical degradation
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the technical field of polymer composite materials, in particular to a PCM wear-resistant protective material and a preparation method thereof. The raw materials required by the preparation method comprise a component A, a component B and a component C in a mass ratio of (80-100): (30-60): 700-1000, wherein the component A comprises polyester modified epoxy resin, a reactive diluent, a toughening agent and a flame retardant, the component B is a modified amine curing agent, and the component C comprises one or more of silicon carbide, iron oxide, silicon oxide, calcium carbonate, talcum powder, carbon black and aluminum hydroxide. The PCM wear-resistant protective material has wear resistance (the material wear loss is less than or equal to 0.04 kg/m)2) The high-strength heat-resistant fireproof material has the advantages of high strength (the compressive strength is more than or equal to 100MPa), good toughness (the breaking strength is more than or equal to 30MPa), acid and alkali corrosion resistance (20% of conventional inorganic acid-alkali medium resistance), heat resistance, flame retardance and normal-temperature forming, meets the protection performance and does not increase the load of a building structure.
Description
Technical Field
The invention relates to the technical field of polymer composite materials, in particular to a PCM wear-resistant protective material and a preparation method thereof.
Background
The structure of the ore tank, the hopper and the silo is generally applied to the fields of metallurgy, petrifaction, electric power, coal, building and the like. These structures are typically concrete or steel materials, and their structural surfaces are subject to long term material erosion and erosion type wear. As the erosion extends from the surface layer to the interior of the structure, the structure body is easily damaged, the service life of the building is finally shortened, and the production and the safety are influenced. To solve this problem, a wear-resistant protective layer is required to be disposed inside the structure.
The traditional wear-resistant protective material can be divided into prefabricated plates and coating type mortar. The prefabricated type such as a rolled microcrystalline plate, a cast stone plate, a polymer lining plate and the like has certain wear resistance according to the material characteristics, and the installation process is usually bonding assembly or anchoring hanging assembly. The process of the mortar type wear-resistant material is manual smearing or mechanical spraying.
The cast stone slab forming includes solution casting forming, sintering forming and hot direct sintering casting forming. Has higher hardness and excellent wear resistance, but belongs to brittle materials, is not easy to bear the striking of heavy objects, the bonding process needs to use furan cement materials for bonding, the stability of the single-piece adhesive force is difficult to control, and the material density is large and is generally 3.0g/cm3. When a slice of cast stone plate drops because of the loss of bonding force or after being impacted and broken, the problem of falling like the snowball effect can occur, which leads to the increase of the damaged area of the wear-resistant layer and then the loss of the protection effect.
The density of the polymer lining plate is relatively small, and is generally 1.2g/cm3The molding process generally comprises extrusion and casting, the molding temperature is 100-300 ℃, the toughness after molding is better than that of cast stone plates, and the impact resistance is realized. But the heat resistance is poor, and the medium with the temperature of 80-300 ℃ such as sintered ore can not meet the wear-resistant use requirement. Cannot be molded at low temperature and normal temperature, and is expensive. The mounting process of the lining plate is hanging mounting, the lining plate often falls off in the using process, and the falling objects are easy to block the passage of the storage bin.
The construction efficiency of coating/spraying the mortar is high, the integrity is good, the material is usually a portland cement-based material, the field forming needs a 5-7 day curing period, and the conditions such as curing time, temperature and the like do not reach the material forming requirement, so that the spraying layer can not form the strength required by the design, and the integral wear resistance is further influenced. If meet the engineering time weak point, salvage the project, require to put into use immediately after the construction is accomplished, then can not satisfy the demand.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a PCM (polymers Combined material) wear-resistant protective material and a preparation method thereof. The PCM wear-resistant protective material is formed by a normal-pressure prefabricating process at the normal temperature of 15-35 ℃, the size can be set randomly, the construction process is the installation of anchoring nails,and the device can be put into use after the installation is finished. Can be poured, sprayed or smeared on site according to the requirement, and the forming density is 1.8-2.0g/cm3。
The PCM wear-resistant protective material perfectly combines the rigidity, dimensional stability and thermal stability of inorganic substances with the toughness, processability, wear resistance and erosion resistance of polymers. The coating can replace traditional prefabricated materials such as plastic lining plates, cast stone plates and microcrystal plates, is applied to parts which cannot be constructed by manual painting and mechanical spraying processes, has the characteristics of wear resistance, heat resistance, convenience and quickness in construction, simplicity in molding, no need of maintenance, and can not increase building load.
The PCM wear-resistant protective material can solve the problems of poor wear resistance, easy falling, long construction period, complex process and the like of internal wear-resistant protective materials such as bins, pipelines and the like, and can protect buildings against wear, corrosion and seepage. It is wear-resistant (the material wear loss is less than or equal to 0.04 kg/m)2) High strength (compressive strength is more than or equal to 100MPa), good toughness (breaking strength is more than or equal to 30MPa), and acid and alkali corrosion resistance (20% of conventional inorganic acid-base medium resistance).
In order to achieve the purpose, the invention adopts the following technical scheme:
the raw materials required by the preparation of the PCM wear-resistant protective material comprise a component A, a component B and a component C in a mass ratio of (80-100): (30-60): 700-1000), wherein the component A comprises polyester modified epoxy resin, a reactive diluent, a toughening agent and a flame retardant, the component B is a modified amine curing agent, and the component C comprises one or more selected from silicon carbide, iron oxide, silicon oxide, calcium carbonate, talcum powder, carbon black and aluminum hydroxide.
According to the invention, the high molecular resin material in the component A is modified, the modified high molecular material is combined with the special inorganic aggregate of the component C by utilizing the excellent wrapping property and the excellent adhesive property of the modified high molecular material, and the modified high molecular material is cured with the resin system to form a net-shaped cross-linked structure by designing the proportion of the special curing agent of the component B. Improves the compactness and integrity of the system, meets the national standard of the wear-resistant product of less than or equal to 0.8Kg/m2。
Preferably, in the PCM wear-resistant protective material, the component A comprises, by weight, 70-100 parts of polyester modified epoxy resin, 5-20 parts of reactive diluent, 5-30 parts of toughening agent, 0-5 parts of defoaming agent, 0-5 parts of coupling agent, 1-10 parts of flame retardant and 0-3 parts of reinforcing agent.
Preferably, in the PCM wear-resistant protective material, the polyester modified epoxy resin is unsaturated polyester modified bisphenol F glycidyl ether resin, more preferably, the epoxy equivalent of the polyester modified epoxy resin is 100-200g/eq, and the viscosity at 25 ℃ is 2000-5000 mpa.s.
Preferably, in the PCM wear-resistant protective material, the reactive diluent is C17-C20And the molecular chain has two or more than two phenolic hydroxyl active groups, more preferably, the epoxy equivalent of the reactive diluent is 100-400g/eq, and the viscosity at 25 ℃ is 1-20 mpa.s.
Preferably, in the PCM wear-resistant protective material, the toughening agent is a polymer mixture with different active end groups and different types of chain segments connected through ester bonds or urethane bonds, and more preferably, the viscosity of the toughening agent at 25 ℃ is 1000-2000 mpa.s.
Preferably, in the PCM wear-resistant protective material, the defoaming agent is a polysiloxane defoaming agent, and the coupling agent is a titanate coupling agent; and/or the flame retardant is ammonium polyphosphate (II phase), the reinforcing agent is carbon black, and more preferably, the carbon black is coating grade carbon black, the pH value is 7-8, and the screen residue is: 45 μm < 1%, moisture < 1%, ash: less than or equal to 0.5 percent (800 ℃).
Preferably, in the PCM wear-resistant protective material, the modified amine curing agent is a mixture of polyetheramine and 2, 4, 6-tris (dimethylaminomethyl) phenol, and preferably, the amine value of the modified amine curing agent is 300-400mgKOH/g, and the viscosity at 25 ℃ is 100-300 mpa.s.
Preferably, in the PCM wear-resistant protective material, the particle size of the component C is 5-2000 meshes, more preferably, the component C further comprises iron slag, and most preferably, the particle size of the iron slag is 1-3 mm.
Preferably, the density of the PCM wear-resistant protective material is 1.8-2.0g/cm3. Setting the required mixture by adopting an independent research and development grading average density methodThe final density of the product is 1.8-2.0g/cm3And classifying different raw materials such as ABC according to density, and setting a multivariate linear equation to calculate the proportion of the different raw materials such as ABC. The protective performance is satisfied without increasing the load of the building structure.
The invention also provides a preparation method of the PCM wear-resistant protective material, which comprises the following steps:
(1) preparation of component A: adding a reactive diluent, a toughening agent, a flame retardant and optionally an antifoaming agent, a coupling agent and a reinforcing agent into a reaction kettle, premixing for 30-50min at the temperature of 30-60 ℃ at 800 rpm, and then adding bisphenol F glycidyl ether resin and unsaturated polyester into the reaction kettle to maintain the temperature unchanged and blending for 60-90min to obtain a component A;
(2) preparation of the component B: adding the polyetheramine and 2, 4, 6-tris (dimethylaminomethyl) phenol into a stirring kettle, and mixing for 60-90min at 15-60 ℃ to obtain a component B;
(3) preparation of component C: one or more selected from silicon carbide, iron oxide, silicon oxide, carbon black, calcium carbonate, talcum powder, iron slag and aluminum hydroxide are pulverized and mixed to obtain a component C, and the component C is further preferably screened and dried according to the granularity requirement to meet the following requirements: the upper and lower limits of the granularity are not more than 10 percent, the mud content is not more than 1 percent, and the drying is anhydrous.
(4) The component A, the component B and the component C are mixed according to the mass ratio of (80-100) to (30-60): (700) and 1000), pouring, spraying or coating the mixture on a using part, and curing at 15-35 ℃ for 6-7h for molding to obtain the PCM wear-resistant protective material.
The invention has the following beneficial effects:
1) the density of the PCM wear-resistant protective material provided by the invention is controlled to be 1.8-2.0g/cm3The protective performance is met, the load of the building structure body is not increased, the body density is increased, the protective effect is poor, and the adhesion and peeling are easy to occur.
2) The wear-resisting property of the PCM wear-resisting protective material provided by the invention meets the requirement that the WR-I wear-resisting loss of the cement-based wear-resisting material of the national standard JG/T270-2010 industrial structure is less than or equal to 0.8kg/m2。
3) The PCM wear-resistant protective material provided by the invention has high strength, and the compressive strength is more than 100 MPa; good toughness and flexural strength more than or equal to 30 MPa. According to the invention, through modification of a flexible molecular chain of a high polymer material and introduction of a sea-island result structure, the toughness is improved, and the Tg is not lost, so that the breaking strength is not less than 30 MPa.
4) The heat-resistant temperature of the PCM wear-resistant protective material provided by the invention is less than or equal to 300 ℃, and the combustion grade of B1 is met.
5) No need of crushing, and forming at 15-35 deg.C; the industrial solid waste material is reused, and the method is environment-friendly, dustless and pollution-free. The waste iron slag produced in the metallurgical industry is calcined at the temperature of more than 1000 ℃, and is treated into spheres with different particle sizes by a special process.
6) And (4) self-defining the design of a prefabricated model.
7) The method has the advantages that the daub does not need to be bonded, the anchoring bolt is installed on the wear-resistant protection base surface, the anchoring hole with the special specification is reserved on the PCM protection plate, and the method is simple and rapid.
Drawings
Fig. 1 is a process diagram for preparing the PCM wear-resistant protective material in example 1.
Fig. 2 is a comparison of wear measurements of cement wear resistant material and PCM wear resistant protective material in the experimental examples.
Fig. 3 is an enlarged comparison of the structural section and the surface wear effect of the PO52.5 cement-based wear-resistant material and the PCM wear-resistant protective material in the 3# economic source.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the scope of the present invention is not limited thereto.
The examples, where specific experimental procedures or conditions are not indicated, were carried out according to the procedures or conditions of the conventional experimental procedures described in the literature in the field. The reagents and instruments used are not indicated by manufacturers, and can be purchased in the market.
Example 1
Example 1 provides a PCM wear-resistant protective material, as shown in fig. 1, prepared as follows:
(1) preparation of component A: 10 parts by weight of a diluent CYH-277 (Wudamson Mao Fine chemical Co., Ltd.), 30 parts by weight of a toughening agent QS-BE (Beijing King island Qishi Co., Ltd.), 5 parts by weight of a defoaming agent BYK054 (Germany Bike), 5 parts by weight of a flame retardant AP422 (Kay chemical industry) and 5 parts by weight of a coupling agent secondary amino silane (Hengda Zhongcheng) are accurately weighed and placed in a 500L stirring kettle with 300 revolutions/min for premixing at 45 ℃ for 30 min. Then, 80 parts by weight of bisphenol F epoxy resin (Nanyakunshan) and 10 parts by weight of trimethylolpropane trimethacrylate (Anhui Hengyuan chemical Co., Ltd.) are weighed and added into a premixing stirring kettle to be blended for 60min with the temperature kept constant. Finally discharging materials and packaging according to the specific gravity to be used as a component A;
(2) preparation of the component B: placing polyetheramine (Beijing Jindaoshi Qishi Co., Ltd., amine value 350 +/-30) and 2, 4, 6-tri (dimethylaminomethyl) phenol (Tianjin Wei Corter Rui chemical technology Co., Ltd.) in a weight ratio of 2: 1 in a stirring kettle at 55 ℃ for redispersion, and discharging and packaging according to specific gravity to obtain a component B;
(3) preparation of component C: weighing 100 parts by weight of spherical iron slag with the particle size of 2-3mm, 100 parts by weight of spherical iron slag with the particle size of 1-2mm, 75 parts by weight of silicon carbide with the particle size of 0.2-1mm, 100 parts by weight of 400-mesh talcum powder and 325-mesh calcium carbonate powder CaCO3125 parts by weight, 2.5 parts by weight of nano-scale silicon dioxide, 2 parts by weight of nano-scale carbon black and 4 parts by weight of 325-mesh alpha-alumina trihydrate powder are added into an automatic powder production line, and after premixing is carried out for 6min, a mixture is prepared to be used as a component C;
(4) uniformly mixing the component A and the component B, then mixing the component A and the component B with the component C, wherein the mass ratio of the component A to the component B to the component C is 80:40:1000, further pouring, curing at 25 ℃, forming for 6 hours, and the forming density is 1.93g/cm3The PCM wear-resistant protective material of the embodiment is obtained.
Comparative example 1
Comparative example 1 provides a PCM wear-resistant protective material, prepared as follows:
(1) the preparation of the A component is the same as that of example 1;
(2) the preparation of the component B is the same as in example 1;
(3) the preparation of the C component differs from example 1 only in that: does not contain nano-scale silicon dioxide and nano-scale carbon black.
(4) Uniformly mixing the component A and the component B, then mixing the component A and the component B with the component C, wherein the mass ratio of the component A to the component B to the component C is 80:40:600, further pouring, curing at 25 ℃, forming for 6 hours, and the forming density is 1.74g/cm3And obtaining the PCM wear-resistant protective material of the comparative example.
Comparative example 2
Comparative example 2 differs from example 1 only in that: in the component A, 30 parts by weight of dibutyl phthalate (Beijing Youxin Lixin chemical industry) is adopted to replace a flexibilizer QS-BE.
Test examples
1. 3 cement-based wear-resistant materials (1# Nanjing Dingchang PII42.5, 2# economic middle-union PO42.5 and 3# economic middle-union PO52.5) are selected to be compared with the PCM wear-resistant protective material prepared in the embodiment 1 for wear loss detection, and maintenance and detection methods are strictly carried out according to the standard of the cement-based wear-resistant materials of JG/T270-. The detection result is shown in fig. 2, wherein from left to right, 1# Nanjing Dingchang PII42.5, 2# Jiyuan Zhonggang PO42.5, 3# Jiyuan Zhonggang PO52.5 and PCM wear-resistant protective material are sequentially arranged. As is evident from comparison of the abrasion loss test in FIG. 2, the surface of the PCM wear-resistant protective material prepared in example 1 has no obvious abrasion, while the other three groups of cement-based wear-resistant products have different abrasion phenomena. Fig. 3 is an enlarged comparison of the structural section and the surface wear effect of the PO52.5 cement-based wear-resistant material (left diagram in fig. 3) and the PCM wear-resistant protective material (right diagram in fig. 3) in the 3# economic source middle joint, and it can be seen that the PCM wear-resistant protective material has a uniform structure, the erosion wear depth is almost 0, and no obvious trace of surface wear exists.
Table 1 shows the results of the wear measurements per unit area of 3 cement-based wear-resistant materials compared with the PCM wear-resistant protective material prepared in example 1. As can be seen from Table 1, the PCM wear-resistant protective material meets the national standard that the first class wear loss is less than or equal to 0.8Kg/m2The technical requirements of (1).
TABLE 1 Cement-based wear resistant Material and PCM wear amount test comparison results
| Name of form | 1# | 2# | 3# | PCM |
| g1(Kg) | 1.595 | 1.6115 | 1.6125 | 1.5265 |
| g2(Kg) | 1.563 | 1.489 | 1.577 | 1.526 |
| Abrasion loss Kg/m2 | 2.56 | 9.8 | 2.84 | 0.04 |
2. Table 2 shows the performance test results of the PCM wear-resistant protective material prepared in example 1. As can be seen from Table 2, the PCM wear-resistant protective material meets the corresponding technical indexes of the national standard and is superior to the standard value. The PCM wear-resistant protective material prepared in the embodiment 1 is prepared by introducing rigid functional groups, modifying sea-island structures and chain structures, increasing polymerization degree, introducing inorganic high-temperature-resistant aggregates, introducing nano inorganic structures and introducing composite resistorsThe final synergistic effect of the combustion agent can obtain the product with the compressive strength of more than or equal to 100MPa, the breaking strength of more than or equal to 30MPa, the wear resistance of less than or equal to 0.04kg/m2The heat-resisting temperature is less than or equal to 300 ℃, and the flame retardance is B1 grade. Wherein, ATH (alpha-alumina trihydrate) is used for dehydration and heat absorption at 235-455 ℃ to inhibit temperature rise; meanwhile, ATH is filled to reduce the concentration of combustible high polymer; the concentration of combustible gas and oxygen is diluted by water vapor discharged by dehydration of ATH, so that combustion can be prevented; al is generated on the combustible surface after dehydration of ATH2O3The protective film is used for isolating oxygen and preventing continuous combustion; the flame retardant generates strong dehydrating substances under the combustion condition, so that macromolecules are carbonized and combustible volatile matters are not easily generated, and flame spread is prevented; in addition, the ATH flame retardant is subjected to surface treatment by using a coupling agent, so that the binding force and the interfacial affinity between the ATH and the polymer are increased.
TABLE 2 Performance test results for PCM wear-resistant protective materials
3. The performances of the PCM wear-resistant protective material prepared in the comparative example 1 are related to the existing products of rare earth oil-containing nylon (Zhongxin metallurgy) and epoxy resin mortar (Beijing UnionRong Dajiangji Co., Ltd.), and are shown in table 3. As can be seen from Table 3, the wear resistance, heat resistance and compression resistance of the PCM are superior to those of the nylon lining board and the epoxy resin mortar.
TABLE 3 comparison of PCM prepared in example 1 with rare earth oil-containing nylon, epoxy mortar abrasion resistant material
| Comparison of composite systems | PCM | Nylon lining board | Epoxy resin mortar |
| Abrasion resistance (kg/m)2) | 0.04 | 0.7 | 0.5 |
| Heat resistance of DEG C | No change at 300 DEG C | Softening at 200 deg.C | Softening at 90 deg.C |
| Compressive strength MPa | 105.6 | — | 63.7 |
The PCM wear-resistant protective material prepared in example 1 and the existing products of rare earth oil-containing nylon (Zhongxin metallurgy) and epoxy resin mortar (Beijing union Rongda Jian material Co., Ltd.) were respectively continuously ignited with flame for 30s, and the fireproof and flame-retardant effects were tested. After the result is 30s, the PCM is not continuously combusted, and the nylon lining plate and the epoxy mortar are continuously combusted, which shows that the PCM is superior to the PCM 2 in flame retardant effect.
4. The wear-resistant standard parts (according to the JG/T270-. The proportion of the component C in the comparative example 1 is less than that in the example 1, the nano silicon dioxide added in the example 1 is absent in the comparative example 1, an interpenetrating network structure cannot be formed due to the absence of silicon hydroxyl, and further the synergistic effect of hydrogen bonds formed between the nano silicon dioxide and a high polymer is absent, so that the thixotropy of the comparative example 1 after molding is poor and the apparent sedimentation is 3mm due to the final synergistic effect. The sedimentation may result in uneven distribution of the material, thereby affecting the overall physical and chemical properties of the PCM. It can be seen from the wear resistance that the surface layer of the comparative example 1 is settled, and the polymer phase and the inorganic mineral phase are unevenly mixed and wrapped, so that the wear resistance of the example 1 is superior to that of the comparative example 1, and meanwhile, the nano carbon black is added into the example 1 to form a reinforcing effect in a cavity structure of a polymer cured product, so that the compressive strength of the example 1 is superior to that of the comparative example 1.
Table 4 comparison of properties of formed wear-resistant standard parts of example 1 and comparative example 1
| Test items | Example 1 | Comparative example 1 |
| Whether there is sedimentation after the mixture is shaped | Without sedimentation stratification | Sedimentation 3mm |
| Compressive strength (MPa) | 105.6 | 96.1 |
| Abrasion resistance (Kg/m)2) | 0.04 | 0.2 |
5. Weighing 100 parts by weight of the component A in the example 1, respectively and uniformly mixing with 50 parts by weight of the component B in the example 1 and 50 parts by weight of the diethylenetriamine curing agent, pouring, curing at 25 ℃, forming a wear-resistant standard part for 6 hours, and comparing the fracture resistance, wherein the results are shown in Table 5. The results show that the toughness of the component B in example 1 is better than that of the diethylenetriamine curing agent. Compared with the storage performance test of the component B and the diethylenetriamine in the embodiment 1, the diethylenetriamine low molecular amine curing agent can not be stored for a long time by using a metal container, and is easy to age by using a plastic package, while the component B product in the embodiment 1 of the invention can be stored by using the metal container for a long time,
TABLE 5
| Test items | Example 1 component A + component B | Component A + Diethylenetriamine in example 1 |
| Flexural strength MPa | 31.2 | 21.6 |
6. Table 6 shows the comparison of the toughening effect of the PCM abrasion resistant protective material prepared in example 1 and comparative example 2, since example 1 adopts sea-island type toughening, it can form homogeneous solution when dissolved into the resin mixture, phase separation can be formed during curing, sea-island structure is formed between the polymer chain segment structures, the ability of the original polymer in the process of moving chain segment can be effectively absorbed, and the glass transition temperature Tg of the original polymer is not changed, while the dibutyl phthalate in comparative example 2 is only singly grafted into the polymer chain segment, and the softening effect is achieved by prolonging the molecular chain length, and the process can reduce the polymer Tg. As can BE seen from Table 6, in the embodiment 1 of the invention, the QS-BE toughening agent is adopted, so that both toughening and Tg temperature of the polymer can BE achieved, and the material finally shows excellent bending resistance without reducing heat resistance. The mere introduction of a long chain of dibutyl phthalate (BPO) is only one way to improve flexibility but not toughness, and the Tg effect is reduced.
Table 6 comparison of flexural strength and heat resistance of example 1 and comparative example 2
| Test items | Example 1 | Comparative example 2 |
| Tg℃ | 62 | 43 |
| Flexural strength MPa | 30 | 23.1 |
Although the invention has been described in detail hereinabove by way of general description, specific embodiments and experiments, it will be apparent to those skilled in the art that many modifications and improvements can be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (13)
1. The PCM wear-resistant protective material is characterized in that raw materials required by preparation comprise a component A, a component B and a component C in a mass ratio of (80-100): (30-60): 700-1000), wherein the component A comprises polyester modified epoxy resin, a reactive diluent, a toughening agent and a flame retardant, the component B is a modified amine curing agent, and the component C comprises one or more selected from silicon carbide, iron oxide, silicon oxide, calcium carbonate, talcum powder, carbon black and aluminum hydroxide;
the component A comprises 70-100 parts of polyester modified epoxy resin, 5-20 parts of reactive diluent, 5-30 parts of toughening agent, 0-5 parts of defoaming agent, 0-5 parts of coupling agent, 1-10 parts of flame retardant and 0-3 parts of reinforcing agent; the polyester modified epoxy resin is unsaturated polyester modified bisphenol F glycidyl ether resin;
the modified amine curing agent is a mixture of polyether amine and 2, 4, 6-tris (dimethylaminomethyl) phenol.
2. The PCM wear-resistant protective material as claimed in claim 1, wherein the epoxy equivalent weight of the polyester modified epoxy resin is 100-200g/eq, and the viscosity at 25 ℃ is 2000-5000 mpa.s.
3. The PCM wear resistant protective material according to claim 1 or 2, wherein the reactive diluent is C17-C20And the molecular chain has two or more than two phenolic hydroxyl active groups.
4. The PCM wear protection material as claimed in claim 3, wherein the reactive diluent has an epoxide equivalent weight of 100-400g/eq and a viscosity of 1-20mpa.s at 25 ℃.
5. The PCM wear protection material according to claim 1 or 2, wherein the toughening agent is a polymer mixture with different reactive end groups, linking different kinds of segments by ester or urethane bonds.
6. The PCM wear protection material as claimed in claim 5, wherein the toughening agent has a viscosity of 1000-2000mpa.s at 25 ℃.
7. The PCM wear resistant protective material according to claim 1 or 2, wherein the defoamer is a polysiloxane defoamer and the coupling agent is a titanate coupling agent; and/or the flame retardant is ammonium polyphosphate, and the reinforcing agent is carbon black with the particle size of less than 400 meshes.
8. The PCM wear-resistant protective material as claimed in claim 1 or 2, wherein the amine value of the modified amine curing agent is 300-400mgKOH/g, and the viscosity at 25 ℃ is 100-300 mpa.s.
9. The PCM wear resistant protective material according to claim 1 or 2, wherein the particle size of the C-component is 5-2000 mesh.
10. The PCM wear resistant protective material according to claim 9, wherein the C component further comprises iron slag.
11. The PCM wear-resistant protective material according to claim 10, wherein the grain size of the iron slag is 1-3 mm.
12. The PCM wear resistant protective material according to claim 1 or 2, wherein the density of the PCM wear resistant protective material is 1.8-2.0g/cm3。
13. A method for preparing PCM wear-resistant protective material according to claim 10 or 11, characterized in that it comprises the following steps:
(1) preparation of component A: adding a reactive diluent, a toughening agent, a flame retardant and optionally an antifoaming agent, a coupling agent and a reinforcing agent into a reaction kettle, premixing for 30-50min at the temperature of 30-60 ℃ at 800 rpm, and then adding bisphenol F glycidyl ether resin and unsaturated polyester into the reaction kettle to maintain the temperature unchanged and blending for 60-90min to obtain a component A;
(2) preparation of the component B: adding the polyetheramine and 2, 4, 6-tris (dimethylaminomethyl) phenol into a stirring kettle, and mixing for 60-90min at 15-60 ℃ to obtain a component B;
(3) preparation of component C: pulverizing one or more selected from silicon carbide, iron oxide, silicon oxide, calcium carbonate, pulvis Talci, carbon black, iron slag and aluminum hydroxide, and mixing to obtain component C;
(4) mixing the component A, the component B and the component C according to the mass ratio of (80-100) to (30-60) to (700-.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010659352.3A CN111777357B (en) | 2020-07-09 | 2020-07-09 | PCM wear-resistant protective material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010659352.3A CN111777357B (en) | 2020-07-09 | 2020-07-09 | PCM wear-resistant protective material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111777357A CN111777357A (en) | 2020-10-16 |
| CN111777357B true CN111777357B (en) | 2022-04-29 |
Family
ID=72759469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010659352.3A Active CN111777357B (en) | 2020-07-09 | 2020-07-09 | PCM wear-resistant protective material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111777357B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104726048A (en) * | 2015-04-10 | 2015-06-24 | 大连理工大学 | Compound toughening bisphenol-A epoxy resin inserted-bar glue high in adhesive capability in high-temperature environment and preparation method of bispheonl-A epoxy resin inserted-bar glue |
| JP2016222777A (en) * | 2015-05-28 | 2016-12-28 | Dic株式会社 | Polyester modified epoxy resin and adhesive |
| JP2017008155A (en) * | 2015-06-18 | 2017-01-12 | Dic株式会社 | Polyester modified epoxy resin and adhesive |
| CN107200820A (en) * | 2017-06-27 | 2017-09-26 | 江门盈骅光电科技有限公司 | Epoxidation vinyl benzene butadiene double-heptene block copolymer and its production and use |
| CN109337634A (en) * | 2018-09-26 | 2019-02-15 | 上海维凯光电新材料有限公司 | The anti-stick back adhesive of high hydrolysis resistance and its preparation for plastic-aluminum combined label |
| CN111454018A (en) * | 2020-04-22 | 2020-07-28 | 黄河水利水电开发总公司监测维修分公司 | High-toughness wear-resistant epoxy resin polymer mortar and application method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0348225A3 (en) * | 1988-06-24 | 1991-07-31 | Hitachi Chemical Co., Ltd. | Epoxy resin molded article with marbled pattern |
| CN101497510B (en) * | 2009-03-03 | 2011-09-28 | 重庆鹏方路面工程技术研究院有限公司 | Modified epoxy resin concrete material and preparation thereof |
| CN103172303B (en) * | 2011-12-21 | 2014-08-27 | 中冶建筑研究总院有限公司 | High-strength organic abrasive |
| CN103864351B (en) * | 2012-12-14 | 2016-01-20 | 中冶建筑研究总院有限公司 | A kind of matrix surface has elastically-deformable organic friction coating and preparation method thereof |
| CN103482904B (en) * | 2013-09-12 | 2016-01-20 | 武大巨成结构股份有限公司 | A kind of modified epoxy mortar resistant abrasion patching material |
| CN109970407A (en) * | 2017-12-15 | 2019-07-05 | 苏州混凝土水泥制品研究院有限公司 | A kind of structural strengthening aqueous epoxy resins modified cement mortar and preparation method thereof |
-
2020
- 2020-07-09 CN CN202010659352.3A patent/CN111777357B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104726048A (en) * | 2015-04-10 | 2015-06-24 | 大连理工大学 | Compound toughening bisphenol-A epoxy resin inserted-bar glue high in adhesive capability in high-temperature environment and preparation method of bispheonl-A epoxy resin inserted-bar glue |
| JP2016222777A (en) * | 2015-05-28 | 2016-12-28 | Dic株式会社 | Polyester modified epoxy resin and adhesive |
| JP2017008155A (en) * | 2015-06-18 | 2017-01-12 | Dic株式会社 | Polyester modified epoxy resin and adhesive |
| CN107200820A (en) * | 2017-06-27 | 2017-09-26 | 江门盈骅光电科技有限公司 | Epoxidation vinyl benzene butadiene double-heptene block copolymer and its production and use |
| CN109337634A (en) * | 2018-09-26 | 2019-02-15 | 上海维凯光电新材料有限公司 | The anti-stick back adhesive of high hydrolysis resistance and its preparation for plastic-aluminum combined label |
| CN111454018A (en) * | 2020-04-22 | 2020-07-28 | 黄河水利水电开发总公司监测维修分公司 | High-toughness wear-resistant epoxy resin polymer mortar and application method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111777357A (en) | 2020-10-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101312562B1 (en) | Binder Composition for Concrete Comprising Bottom Ash | |
| CN113716915B (en) | Sprayed ultrahigh-performance concrete for corrosion prevention and reinforcement | |
| CN104692745B (en) | A kind of high-strength high abrasion cement-based material and preparation method thereof | |
| CN110156380B (en) | Intensive asphalt mixture prepared by using modified steel slag and preparation method | |
| KR101959437B1 (en) | Eco-Friendly Mortar Composition for Repair Section and Constructing Methods Using Thereof | |
| KR101135175B1 (en) | Protective mortar using calcium aluminate and oraganic-inorganic hybrid coating agent | |
| CN114480760A (en) | Blast furnace hearth repairing material | |
| CN115819049B (en) | Cement-based grouting material for mounting wind power foundation tower barrel base and preparation method thereof | |
| CN109592950A (en) | Heat resistant type strength cement-based grouting material and preparation method thereof | |
| CN113149675A (en) | Low-cement refractory castable for pumping construction | |
| GB2460707A (en) | Polymer concrete aggregate | |
| KR101179506B1 (en) | Composition of organic and inorganic hybrid cement zero concrete with high strength | |
| CN102515657A (en) | Hydrophobe type high-strength wear-resistant plate and manufacturing method thereof | |
| CN109020572A (en) | A kind of magnesia carbon brick with modified bonding agent preparation | |
| CN111777357B (en) | PCM wear-resistant protective material and preparation method thereof | |
| JPS6128630B2 (en) | ||
| CN101475381A (en) | Diversion trench high-strength low ablation rate castable concrete for launching rocket | |
| CN111978043B (en) | Self-waterproof concrete and preparation method thereof | |
| KR100654152B1 (en) | Reinforcement material for open concrete structure using a multi-functional slag aggregate and its pumping apparatus | |
| WO2022098531A1 (en) | High strength, tough, coal and coal by-product based composite ceramics | |
| CN1944317A (en) | Formula for producing color tile from casting waste sand and its producing method | |
| KR20160019586A (en) | High-strength heavyweight concrete composite and the structure using the same | |
| KR20190074575A (en) | Eco-friendly ultra rapid hardening mortar composition and manufacturing method using the same | |
| KR101653564B1 (en) | Ultra rapid hardening mortar composition and manufacturing method using the same | |
| KR101993748B1 (en) | Concrete Composition for Steel-Concrete Connection of Bridge and Constructing Methods Using Thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |