CN111454566A - Rapid repair material - Google Patents
Rapid repair material Download PDFInfo
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- CN111454566A CN111454566A CN201910054087.3A CN201910054087A CN111454566A CN 111454566 A CN111454566 A CN 111454566A CN 201910054087 A CN201910054087 A CN 201910054087A CN 111454566 A CN111454566 A CN 111454566A
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- Prior art keywords
- repair material
- rapid repair
- rapid
- mass
- isocyanate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/08—Polyurethanes from polyethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/50—Polyethers having heteroatoms other than oxygen
- C08G18/5021—Polyethers having heteroatoms other than oxygen having nitrogen
- C08G18/5024—Polyethers having heteroatoms other than oxygen having nitrogen containing primary and/or secondary amino groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6681—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38
- C08G18/6685—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38 with compounds of group C08G18/3225 or polyamines of C08G18/38
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses a rapid repair material which comprises the following components in percentage by mass: isocyanate: 40-50%; polyether polyamine: 20-30%; diethyl toluene diamine: 15-20%; polytetrafluoroethylene: 5 to 10 percent. The rapid repairing material does not need to be vulcanized when in use, can be directly sprayed for use, has extremely rapid repairing reaction, and can be polymerized and cured within one minute. The quick repairing material has the advantages that the use condition is not strict, the quick repairing material can be used under any weather condition or even under the condition of high humidity, and the repaired material can be used again for preventing abrasion, impact and corrosion. In addition, the rapid repair material can effectively solve the problems of abrasion and cracking of the adhesive tape in the prior art, reduce the downtime of equipment due to failure, further ensure the effective and stable operation of an equipment system and reduce the cost investment of spare parts.
Description
Technical Field
The invention relates to a material, in particular to a material for repairing.
Background
When raw materials of a steel plant are processed, the carrying capacity of a production line is large due to heavy production tasks, the continuous friction of a supporting roller during operation causes large-area surface abrasion of a conveying belt, and sometimes even more than 100 meters of abrasion can be caused to be seen in a steel wire rope belt core.
At present, the treatment mode for dealing with the abrasion is generally to replace a new adhesive tape, but the replacement and maintenance have the problems of slow construction progress, long standby time, construction cost and incapability of large-area repair. In addition, because a large amount of adhesive tape is replaced during replacement, the adhesive tape is expensive, and the original adhesive tape is directly scrapped after replacement.
Based on this, it is desirable to obtain a material that can repair a worn adhesive tape so that the repaired adhesive tape can be put into use again, greatly saving the cost and improving the tape utilization rate. In addition, the material is simple to operate and needs less time for repair.
Disclosure of Invention
The invention aims to provide a quick repair material which can be directly sprayed for use without vulcanization treatment and has extremely quick repair reaction, such as polymerization and solidification within one minute. The quick repairing material has the advantages that the use condition is not strict, the quick repairing material can be used under any weather condition or even under the condition of high humidity, and the repaired material can be used again for preventing abrasion, impact and corrosion. In addition, the rapid repair material integrates the characteristics of rubber, can adopt a spraying mode, is very easy to provide a seamless wear-resistant elastic wear-resistant coating for the surface of a workpiece, and particularly has obvious effect when a worn adhesive tape is repaired, so that the problem of abrasion and cracking of the adhesive tape in the prior art can be effectively solved, the downtime of equipment due to failure is reduced, the effective and stable operation of an equipment system is further ensured, and the cost investment of spare parts is reduced.
In order to achieve the purpose, the invention provides a rapid repair material which comprises the following components in percentage by mass:
isocyanate: 40-50%;
polyether polyamine: 20-30%;
diethyl toluene diamine: 15-20%;
polytetrafluoroethylene: 5 to 10 percent.
In the rapid repair material, through research, the inventor finds that through the component design, the material to be repaired can be directly sprayed with the rapid repair material without vulcanization treatment, so that the rapid repair material is polymerized and cured, and the repair is realized. And because the spraying can be directly operated, the spraying can be directly operated in a way of being vertical or horizontal to the surface of the material to be repaired, and the thickness of the sprayed coating can reach 1-20 mm.
It should be noted that the rapid repair material of the present invention can repair not only the belt tape, but also the rubber liner. In addition, the rapid repair material can also protect metal parts comprehensively.
In addition, the design principle of each component of the rapid repair material is as follows:
isocyanate: the isocyanate is selected as the rapid repair material of the invention because the component is an important intermediate for organic synthesis. As the main component of the rapid repair material, isocyanate can be used for improving the final water resistance of the material, and the isocyanate also has good adhesion and wear resistance. Compared with ethyl acetate, when the rapid repair material adopts isocyanate, the surface of the finally formed material has more excellent water resistance and wear resistance. Therefore, in the rapid repair material, the mass percentage of the isocyanate is controlled to be 40-50%.
Polyether polyamine: in the technical scheme of the invention, the polyether polyamine is used for the reason that the component has good water resistance, impact resistance and low temperature resistance. After the polyether polyamine is added into the rapid repair material, the finally formed material surface has good waterproofness, can effectively bear large-scale durable impact of materials, and is not inflammable. Compared with diethylamine, the polyether polyamine has more stable chemical structure and better flame resistance performance. Therefore, in the rapid repair material, the mass percentage of the polyether polyamine is controlled to be 20-30%.
Diethyl toluene diamine: in the rapid repair material, the diethyl toluene diamine is used as a curing agent and an oxidant, and has the advantages of slight water solubility, high strength, hydrolysis resistance and heat resistance. Therefore, after the diethyl toluene diamine is added into the rapid repair material, the finally formed material surface has excellent aging resistance, the service life is greatly prolonged, and the strength of the material body is greatly enhanced. In addition, compared with toluene diamine, the adopted diethyl toluene diamine has low environmental pollution and low corrosivity, so that the mass percentage of the diethyl toluene diamine in the rapid repair material is controlled to be 15-20%.
Polytetrafluoroethylene: in the technical scheme of the invention, polytetrafluoroethylene is used as a high-dose supplement and has great influence on the form, structure and performance of materials. After the polytetrafluoroethylene is added into the rapid repair material, the properties of the finally formed material can be obviously improved, such as the processing property, the mechanical property, the optical property, the aging property and the surface property are all improved, the coating hardness of the finally reacted material is increased, the wear resistance is improved, and the possibility of mechanical scratch on the surface is reduced. Compared with polypropylene and polyethylene, the polytetrafluoroethylene adopted by the scheme has the advantages of improved performance in all aspects, particularly increased hardness and more excellent scratch-resistant improved surface, so that the mass percentage of the polytetrafluoroethylene in the rapid repair material is controlled to be 5-10%.
In summary, it can be seen that the rapid repair material of the present invention comprehensively considers various properties of the finally formed material, balances the simplicity and high efficiency and rapidity of operating the rapid repair material of the present invention, and controls the mass ratio of each component: isocyanate: 40-50%; polyether polyamine: 20-30%; diethyl toluene diamine: 15-20%; polytetrafluoroethylene: 5-10%, so that the finally formed material has excellent compression deformation performance, excellent corrosion resistance, alkali resistance, solvent resistance and good heat dissipation function.
Further, in the rapid repair material according to the present invention, the isocyanate is composed of isocyanic acid and diisocyanate.
Furthermore, in the rapid repair material of the present invention, the mass percentage of the isocyanate in the isocyanate is 40 to 45%, and the mass percentage of the diisocyanate in the diisocyanate is 55 to 60%.
Further, in the rapid repair material according to the present invention, the polyether polyamine is composed of polyamine, polyol, and polyether.
Furthermore, in the rapid repair material of the present invention, the polyamine accounts for 30-35% by mass of the polyether polyamine, the polyol accounts for 30-35% by mass of the polyether polyamine, and the polyether accounts for 30-40% by mass of the polyether polyamine.
Further, in the rapid repair material according to the present invention, the diethyltoluenediamine is composed of 5-diethyl-2 and 4-diaminotoluene.
Further, in the rapid repair material, the mass percent of 5-diethyl-2 in diethyltoluenediamine is 72-76%, and the mass percent of 4-diaminotoluene in diethyltoluenediamine is 24-28%.
Further, in the rapid repair material of the invention, the working temperature is-50 to 120 ℃.
Furthermore, in the rapid repair material of the present invention, the density is 1.01E1.04g/cm3。
Furthermore, the rapid repair material has at least one of the following mechanical properties of 11-13N/mm peel strength, 80-85N/mm tear strength, 16.2-16.5 MPa tensile strength, 305-310% elongation and 0.8-1.0 KJ/m impact resistance2。
The rapid repair material has the following advantages and beneficial effects:
(1) the rapid repair material disclosed by the invention has the advantages of super-strong adhesive force, excellent wear resistance, excellent tensile property, excellent cohesive strength, excellent tensile strength, excellent peeling strength, and good hardness, excellent toughness and excellent elongation.
(2) The rapid repair material has the advantages of controllable thickness of the repair coating, rapid curing during repair and short application time.
(3) The rapid repair material is simple to operate when in use, does not need to disassemble materials to be repaired, does not need to carry out hot vulcanization treatment on the materials to be repaired, can rapidly repair the materials to be repaired, and has good self-leveling property and bright appearance.
(4) The rapid repair material provided by the invention is adopted for repair, so that the repair cost can be effectively reduced, the time required for repair is short, and the major loss caused by scrapping and replacement and long-time shutdown is avoided.
(5) The rapid repair material provided by the invention is used for repairing, so that the original damaged material needing to be repaired can be repaired, and the repaired material has better performance and longer service life.
Detailed Description
The rapid repair material according to the present invention will be further explained and illustrated with reference to specific examples, which, however, should not be construed to unduly limit the technical scope of the present invention.
Examples 1 to 5
The rapid repair material of the embodiments 1-5 can be prepared from 40-50% by mass of isocyanate, 20-30% by mass of polyether polyamine, 15-20% by mass of diethyltoluenediamine, and 5-10% by mass of polytetrafluoroethylene.
Wherein the isocyanate comprises 40-45% of isocyanic acid and 55-60% of diisocyanate by mass. The polyether polyamine consists of polyamine, polyalcohol and polyether, wherein the polyamine accounts for 30-35% of the mass of the polyether polyamine, the polyalcohol accounts for 30-35% of the mass of the polyether polyamine, and the polyether accounts for 30-40% of the mass of the polyether polyamine. The diethyltoluenediamine consists of 5-diethyl-2 and 4-diaminotoluene, wherein the mass percent of 5-diethyl-2 to diethyltoluenediamine is 72-76%, and the mass percent of 4-diaminotoluene to diethyltoluenediamine is 24-28%.
Table 1 shows the mass percentages of the components of the rapid repair materials in examples 1-5.
Table 1.
The rapid repair materials of examples 1-5 were repaired using the following steps:
1) the high pressure spray equipment is placed in the appropriate location for the material to be repaired. Of course, in some preferred embodiments, the application surface may be pretreated prior to spraying, for example: and (4) polishing the surface of the implementation surface, and cleaning uneven parts or tilted steel wire rope heads.
2) The rapid repair material of the embodiment 1-5 is uniformly sprayed on the material to be repaired by adopting high-pressure spraying equipment, the high-pressure spraying equipment can spray in a mode of being horizontal or vertical to the implementation surface of the material to be repaired during spraying, the maximum spraying amount of the high-pressure spraying equipment in one minute can be 10kg, and the thickness of the sprayed coating is 1-20 mm;
3) after the spraying is finished, the rapid repairing material is naturally waited for solidification, after the rapid repairing material is gelled for 10 seconds, the material surface strength finally formed by the rapid repairing material can reach the walking strength after 10 minutes. In some preferred embodiments, the surface of the material reaching walking strength can be subjected to a subsequent maintenance treatment for 2 hours to improve the performance of the repaired material. The maintenance treatment may be performed by a treatment method known to those skilled in the art, and thus, will not be described herein.
It should be noted that, when the rapid repair materials of examples 1 to 5 were sprayed, the temperature was controlled to be in the range of-50 to 120 ℃.
In addition, the material needing to be repaired in the steps can be a conveyor belt adhesive tape, a rubber gasket or a metal part.
Table 2 lists the results of the tests performed on samples taken after the rapid repair materials of examples 1-5 were applied to the belt. Wherein, the test for evaluating the performance is carried out in the following way:
1) wear resistance
The sample was subjected to an abrasion test and observed at 5g/m3The surface abrasion loss of the thick material is 72 hours, and the evaluation criteria are as follows:
◎: 50N, the abrasion loss is 0 mm;
o: 70N, and the abrasion loss is 2 mm;
Δ: 90N, and the abrasion loss is 4 mm;
×: 110N, and the abrasion loss is 6 mm.
2) Compressive deformability
Carrying out T-bend test on the sample, observing cracking of the repairing material layer at the bent part, and peeling off the adhesive tape, wherein the evaluation criteria are as follows:
◎, 0T, no cracking and no tape stripping;
o: 0T, no crack, slight peeling of individual points at the edge part;
Δ: 1T, no cracking and no stripping;
×: 1T, no cracking, slight edge peeling.
3) Corrosion resistance
The salt spray test was carried out on the test specimens with the test standard ASTM B117 for a test time of 72 hours, with the following evaluation criteria:
◎, the area ratio of white rust is less than 1%;
o: the white rust area rate is more than 1% and less than 3%;
Δ: the white rust area rate is more than 3% and less than 5%;
× the white rust area ratio is more than 5%.
4) Alkali resistance
Cleaning by using an alkaline degreasing agent (pH is 11-12), spraying for 5min at 45 ℃, rinsing by using water, and observing the appearance and the adhesion of a black coating of the material, wherein the evaluation standard is as follows:
◎, no change in appearance, no peeling of the coating;
o: the appearance is changed, and the coating does not fall off;
Δ: appearance changes, local coating falls off;
× appearance change, and the coating falls off in large area.
5) Heat dissipation
The emissivity of the black coating of the material was measured and evaluated as follows:
◎, emissivity coefficient is above 0.56;
o: an emissivity of 0.56 or less and 0.0.64 or more;
Δ: an emissivity of 0.64 or less and 0.72 or more;
×, emissivity coefficient below 0.72.
6) Solvent resistance
The material surface was wiped back and forth 20 times with fine gauze dipped in 80% ethanol and MEK, and the evaluation criteria were as follows:
◎, no change in appearance;
o: the appearance has a slight wiping mark;
Δ: the appearance is obviously whitish or part of the skin membrane is exposed;
× the appearance film completely falls off
Table 2.
As can be seen from Table 2, the density of the rapid repair materials of examples 1 to 5 is 1.01 to 1.04g/cm3A hardness of 70 to 90Shore A, a peel strength of 11 to 13N/mm, a tear strength of 80 to 85N/mm, a tensile strength of 16.2 to 16.5MPa, an elongation of 305 to 310%, and an impact resistance of 0.8 to 1.0KJ/m2. In addition, the tape repairing materials of examples 1 to 5 of this embodiment are excellent in wear resistance, compression set property, corrosion resistance, alkali resistance, heat dissipation property and solvent resistance, and in artificial aging resistance.
In addition, tables 3 and 4 compare the performance of the rapid repair materials of the present case with those of the prior art.
Table 3.
Note: in Table 3, E indicates excellent, G indicates good, F indicates general, and P indicates poor.
Table 4.
As can be seen by combining the tables 3 and 4, the rapid repair material has excellent comprehensive performance and excellent performances in various aspects compared with the prior art.
In summary, the following steps: the rapid repair material has the following advantages and beneficial effects:
(1) the rapid repair material has the advantages of super-strong adhesive force, excellent wear resistance, excellent tensile property, excellent cohesive strength, excellent tensile strength, excellent peeling strength, and good hardness, excellent toughness and excellent elongation.
(2) The rapid repair material has the advantages of controllable thickness of the repair coating, rapid curing and short application time during implementation.
(3) The rapid repair material is simple to operate when in use, does not need to disassemble materials required to be repaired, does not need to carry out hot vulcanization treatment on the operations required to be repaired, can rapidly repair the materials required to be repaired, and has good self-leveling property and bright appearance when finally reacted and formed.
(4) By adopting the rapid repair material to repair, the repair cost can be effectively reduced, the time spent for repairing is short, and the major loss caused by scrapping, replacement and long-time shutdown is avoided.
(5) The rapid repairing material is adopted for repairing, so that the original damaged material needing repairing can be repaired, the performance of the repaired material is better, and the service life is better.
It should be noted that the prior art in the protection scope of the present invention is not limited to the examples given in the present application, and all the prior art which is not inconsistent with the technical scheme of the present invention, including but not limited to the prior patent documents, the prior publications and the like, can be included in the protection scope of the present invention.
In addition, the combination of the features in the present application is not limited to the combination described in the claims of the present application or the combination described in the embodiments, and all the features described in the present application may be freely combined or combined in any manner unless contradictory to each other.
It should also be noted that the above-mentioned embodiments are only specific embodiments of the present invention. It is apparent that the present invention is not limited to the above embodiments and similar changes or modifications can be easily made by those skilled in the art from the disclosure of the present invention and shall fall within the scope of the present invention.
Claims (10)
1. The quick repair material is characterized by comprising the following components in percentage by mass:
isocyanate: 40-50%;
polyether polyamine: 20-30%;
diethyl toluene diamine: 15-20%;
polytetrafluoroethylene: 5 to 10 percent.
2. The rapid repair material of claim 1 wherein the isocyanate is comprised of isocyanic acid and a diisocyanate.
3. The rapid repair material according to claim 2, wherein the isocyanate is 40 to 45% by mass of the isocyanate, and the diisocyanate is 55 to 60% by mass of the diisocyanate.
4. The rapid repair material of claim 1, wherein the polyether polyamine is comprised of a polyamine, a polyol, and a polyether.
5. The rapid repair material according to claim 4, wherein the polyamine is 30 to 35% by mass of the polyether polyamine, the polyol is 30 to 35% by mass of the polyether polyamine, and the polyether is 30 to 40% by mass of the polyether polyamine.
6. The rapid repair material of claim 1, wherein the diethyltoluenediamine consists of 5-diethyl-2 and 4-diaminotoluene.
7. The rapid repair material according to claim 6, wherein the 5-diethyl-2 is 72 to 76% by mass of diethyltoluenediamine, and the 4-diaminotoluene is 24 to 28% by mass of diethyltoluenediamine.
8. The rapid repair material according to any one of claims 1 to 6, having a working temperature of-50 to 120 ℃ or lower.
9. As claimed inThe rapid repair material according to any one of claims 1 to 6, wherein the density is 1.01 to 1.04g/cm3。
10. The rapid repair material according to any one of claims 1 to 6, which has at least one of the following mechanical properties of 11 to 13N/mm in peel strength, 80 to 85N/mm in tear strength, 16.2 to 16.5MPa in tensile strength, 305 to 310% in elongation, and 0.8 to 1.0KJ/m in impact resistance2。
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| CN201910054087.3A CN111454566A (en) | 2019-01-21 | 2019-01-21 | Rapid repair material |
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| CN201910054087.3A CN111454566A (en) | 2019-01-21 | 2019-01-21 | Rapid repair material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113883423A (en) * | 2021-10-19 | 2022-01-04 | 山东腾威石油装备有限公司 | Novel pipe network repair reinforcing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113883423A (en) * | 2021-10-19 | 2022-01-04 | 山东腾威石油装备有限公司 | Novel pipe network repair reinforcing method |
| CN113883423B (en) * | 2021-10-19 | 2023-02-07 | 山东腾威石油装备有限公司 | Novel pipe network repair reinforcing method |
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Application publication date: 20200728 |