CN118110847A - Multilayer steel wire winding modified polyethylene wear-resistant composite pipe - Google Patents
Multilayer steel wire winding modified polyethylene wear-resistant composite pipe Download PDFInfo
- Publication number
- CN118110847A CN118110847A CN202410440406.5A CN202410440406A CN118110847A CN 118110847 A CN118110847 A CN 118110847A CN 202410440406 A CN202410440406 A CN 202410440406A CN 118110847 A CN118110847 A CN 118110847A
- Authority
- CN
- China
- Prior art keywords
- layer
- melt adhesive
- steel wire
- hot melt
- modified polyethylene
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
- F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/02—Protection of pipes or objects of similar shape against external or internal damage or wear against cracking or buckling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/06—Protection of pipes or objects of similar shape against external or internal damage or wear against wear
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/08—Coatings characterised by the materials used by metal
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to a multilayer steel wire winding modified polyethylene wear-resistant composite pipe. According to the invention, dopamine is utilized to carry out self-polymerization cladding on beta-eucryptite under alkaline conditions, so that polydopamine is accumulated on the surface of the beta-eucryptite, then modified nano silicon dioxide obtained through the reaction of silicon hydroxyl and alkoxy is matched with silane coupling agent and silicon dioxide, and the silane coupling agent and the silicon dioxide are used for carrying out blending modification on ultra-high molecular weight polyethylene to prepare the modified polyethylene, so that when the modified polyethylene is used as a material of an inner layer pipe, on one hand, the addition of the beta-eucryptite and the silicon dioxide can both improve the hardness, enhance the wear resistance, and the silicon dioxide has good heat conduction capability, so that the thermal dispersion of a friction surface can be realized, the thermal expansion coefficient can be reduced due to the negative thermal expansion characteristic of the beta-eucryptite, and on the other hand, the friction coefficient can be further reduced due to the cooperation of the cladding of the polydopamine, the beta-eucryptite can play for a long time without precipitating a system, and meanwhile, the movement of a molecular chain can be hindered.
Description
Technical Field
The invention belongs to the technical field of composite pipes, and particularly relates to a multilayer steel wire winding modified polyethylene wear-resistant composite pipe.
Background
The composite pipe is based on a metal and thermoplastic plastic composite structure and mainly comprises an aluminum-plastic composite pipe, a steel-plastic composite pipe, an aluminum alloy plastic-lined composite pipe, a steel skeleton pipe and the like, wherein the steel skeleton pipe has the advantages of good impact resistance, high mechanical strength and the like, and is widely applied to various fields.
Although the prior steel skeleton pipe has a certain wear resistance by adopting high-density polyethylene as a matrix, the prior steel skeleton pipe still has the problem of insufficient wear resistance in the practical long-term use process, and is particularly obvious in the process of conveying powder and solid media. In order to solve the technical problem, the ultra-high molecular weight polyethylene with smaller friction coefficient is adopted to replace the polyethylene in the prior art, so that the polyethylene has more excellent wear resistance. However, the ultra-high molecular weight polyethylene still faces the defect when being used as a matrix to limit the practical application effect, because friction heat is necessarily generated in the friction process, the ultra-high molecular weight polyethylene has small heat conductivity coefficient and large thermal expansion coefficient, the continuous temperature rise and friction heat accumulation can greatly promote the unwrapping and sliding of molecular chains, and finally cracks are easily generated on the friction surface, so that the friction coefficient is increased.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention aims to provide a multilayer steel wire winding modified polyethylene wear-resistant composite tube, which utilizes dopamine to carry out self-polymerization coating on beta-eucryptite under alkaline conditions, so that polydopamine is accumulated on the surface of the beta-eucryptite, then the modified nano silicon dioxide obtained by reacting a silane coupling agent with silicon dioxide through silicon hydroxyl and alkoxy is matched, and the modified polyethylene is prepared by blending and modifying the ultra-high molecular weight polyethylene in a synergistic manner, so that when the modified polyethylene is used as a material of an inner layer tube, on one hand, the addition of the beta-eucryptite and the silicon dioxide can improve the hardness, enhance the wear resistance, and the silicon dioxide has good heat conducting capability, so that the thermal dispersion of a friction surface can be realized, and as for the characteristic of negative thermal expansion of the beta-eucryptite, the thermal expansion coefficient can be reduced by further cooperation of the beta-eucryptite, on the other hand, the coating of the polydopamine can play the function for a long time without separating out a system, and meanwhile, the movement of a molecular chain can be prevented.
The aim of the invention can be achieved by the following technical scheme:
The multilayer steel wire winding modified polyethylene wear-resistant composite pipe is sequentially provided with an inner layer pipe, a first hot melt adhesive layer, a first reinforcing layer, a second hot melt adhesive layer, a second reinforcing layer, a third hot melt adhesive layer and an outer layer pipe from inside to outside; the inner layer pipe is obtained by hot press molding of modified polyethylene by using a die; the outer layer tube is obtained by hot melting high-density polyethylene, injection molding the high-density polyethylene on the surface of the third hot melt adhesive layer and cooling and molding the high-density polyethylene.
As a preferable technical scheme of the invention, the first hot melt adhesive layer is a coating formed by coating the hot melt adhesive on the surface of the inner layer pipe and then cooling; the second hot melt adhesive layer is a coating formed by cooling after the hot melt adhesive is coated on the surface of the first reinforcing layer; the third hot melt adhesive layer is a coating formed by cooling after the hot melt adhesive is coated on the surface of the second reinforcing layer.
As a preferable technical scheme of the invention, the first reinforcing layer is a net-shaped framework formed by spirally winding a first steel wire at an angle of about 70-75 degrees, and the net distance is 10-40mm; the second reinforcing layer is a reticular framework formed by spirally winding second steel wires at an angle of 30-35 degrees, and the mesh spacing is 10-40mm; the diameters of the first steel wire and the second steel wire are the same and are 1.3-1.5mm.
Further, the tensile strength of the first steel wire is 1800-2200MPa, and the tensile strength of the second steel wire is 1800-2200MPa.
As a preferable technical scheme of the invention, the thickness ratio of the first hot melt adhesive layer to the second hot melt adhesive layer to the third hot melt adhesive layer is 80-100:100-130:130-140; the thickness ratio of the inner layer pipe to the first hot melt adhesive layer is 10:0.8-1; the thickness ratio of the inner layer tube to the outer layer tube is 15-17:5-6.
As a preferred technical scheme of the present invention, the modified polyethylene is prepared by the following steps:
step a: grinding the beta-eucryptite to the particle size of 1-2 mu m to obtain a material a;
Step b: adding 2-3 parts by weight of a material a into 200-250 parts by weight of Tris-hydrochloric acid buffer solution, stirring at normal temperature for 20-30min in ultrasonic with power of 300-400W, adding 4-5 parts by weight of dopamine hydrochloride, stirring at normal temperature for 20-24h for reaction, filtering, removing filtrate, washing by using deionized water, and finally vacuum drying at 40-50 ℃ until the weight is constant to obtain polydopamine coated beta-eucryptite;
Step c: adding 2-3 parts by weight of nano silicon dioxide into 80-100 parts by weight of absolute ethyl alcohol, stirring for 20-30min at normal temperature in ultrasonic with power of 300-400W, mixing, adding 0.5-1 parts by weight of silane coupling agent and 0.05-0.1 part by weight of deionized water, stirring for 18-20h at 30-40 ℃ for reaction, centrifuging, taking precipitate, washing with deionized water, and finally drying in vacuum at 70-80 ℃ until the weight is constant to obtain modified nano silicon dioxide;
Step d: the ultra-high molecular weight polyethylene powder, the polydopamine coated beta-eucryptite and the modified nano silicon dioxide are mixed according to the weight ratio, and the preparation is completed.
Further, the Tris-HCl buffer of step b has a pH of 8.
Further, the particle size of the nano silicon dioxide in the step c is 30-50nm.
Further, the silane coupling agent in the step c is at least one of a silane coupling agent YDH-171, a silane coupling agent KH-550 and a silane coupling agent KH-570.
Further, the rotational speed of the centrifugation in the step c is 6000-8000r/min, and the centrifugation time is 15-20min.
Further, the molecular weight of the ultra-high molecular weight polyethylene powder in the step d is 200-300 ten thousand.
Further, the weight ratio of the step d is 100:6-8:1-2.
As a preferable technical scheme of the invention, the hot press molding temperature is 175-180 ℃, the pressure is 9.5-10MPa, and the time is 50min.
The invention has the beneficial effects that:
(1) According to the invention, dopamine is utilized to carry out self-polymerization cladding on beta-eucryptite under alkaline conditions, so that polydopamine is accumulated on the surface of the beta-eucryptite, then modified nano silicon dioxide obtained through the reaction of silicon hydroxyl and alkoxy is matched with silane coupling agent and silicon dioxide, and the silane coupling agent and the silicon dioxide are used for carrying out blending modification on ultra-high molecular weight polyethylene to prepare the modified polyethylene, so that when the modified polyethylene is used as a material of an inner layer pipe, on one hand, the addition of the beta-eucryptite and the silicon dioxide can both improve the hardness, enhance the wear resistance, and the silicon dioxide has good heat conduction capability, so that the thermal dispersion of a friction surface can be realized, the thermal expansion coefficient can be reduced due to the negative thermal expansion characteristic of the beta-eucryptite, and on the other hand, the friction coefficient can be further reduced due to the cooperation of the cladding of the polydopamine, the beta-eucryptite can play for a long time without precipitating a system, and meanwhile, the movement of a molecular chain can be hindered.
(2) According to the invention, polydopamine is creatively added into the ultra-high molecular weight polyethylene to coat beta-eucryptite and modified nano silicon dioxide, so that the beta-eucryptite and the modified nano silicon dioxide can generate synergistic effect, the modified polyethylene is prepared by blending modification, when the modified polyethylene is used as a material of an inner layer tube of a multi-layer steel wire winding modified polyethylene wear-resistant composite tube, the wear-resistant effect can be jointly promoted, the surface friction coefficient is reduced, on one hand, the nano silicon dioxide can be better dispersed in a system after being modified by a silane coupling agent, the aggregation phenomenon is reduced, the effects of improving the hardness, promoting the heat conduction and promoting the heat dispersion are exerted, on the other hand, due to a large amount of organic benzene ring structures of polydopamine, the polydopamine has very excellent steric hindrance effect, so that after the beta-eucryptite is coated, the beta-eucryptite can be improved in the compatibility of the organic system, and in addition, the possible migration and precipitation system of the beta-eucryptite in a long-term negative thermal expansion process can be effectively avoided, and besides, the polydopamine can form a stronger acting force with a molecular chain of the ultra-high molecular weight polyethylene, so that the thermal friction coefficient can be well increased and the final friction coefficient can be reduced when the thermal chain is accumulated for a long term, and the thermal friction coefficient is well increased.
(3) The invention provides excellent reliability, firm structure and simple production of the pipe by arranging the multi-layer steel wire winding net as the reinforcing layer, effectively realizes moisture resistance, corrosion resistance, compression resistance and deformation resistance, and is very suitable for conveying solid, powder, gas, liquid and other materials.
Detailed Description
In order to further describe the technical means and effects adopted by the present invention for achieving the intended purpose, the following detailed description is given below with reference to the embodiments, structures, features and effects according to the present invention.
The hot melt adhesives of the examples and comparative examples of the present invention were obtained by direct market purchase from DuPont, U.S., with the brand E100 of maleic anhydride grafted PE; the ultra-high molecular weight polyethylene powders were all 500 mesh.
Example 1
The multilayer steel wire winding modified polyethylene wear-resistant composite pipe is sequentially provided with an inner layer pipe, a first hot melt adhesive layer, a first reinforcing layer, a second hot melt adhesive layer, a second reinforcing layer, a third hot melt adhesive layer and an outer layer pipe from inside to outside; the inner layer pipe is obtained by hot press molding of modified polyethylene by using a die; the outer layer tube is obtained by hot melting high-density polyethylene, injection molding the high-density polyethylene on the surface of the third hot melt adhesive layer and cooling and molding the high-density polyethylene.
The first hot melt adhesive layer is a coating formed by coating the hot melt adhesive on the surface of the inner layer pipe and then cooling; the second hot melt adhesive layer is a coating formed by cooling after the hot melt adhesive is coated on the surface of the first reinforcing layer; the third hot melt adhesive layer is a coating formed by cooling after the hot melt adhesive is coated on the surface of the second reinforcing layer.
The first reinforcing layer is a net-shaped framework formed by spirally winding a first steel wire at an angle of about 70 degrees, and the net distance is 10mm; the second reinforcing layer is a reticular framework formed by spirally winding second steel wires at an angle of about 30 degrees, and the mesh spacing is 10mm; the diameters of the first steel wire and the second steel wire are the same and are 1.3mm.
The tensile strength of the first steel wire is 1800MPa, and the tensile strength of the second steel wire is 1800MPa.
The thickness ratio of the first hot melt adhesive layer to the second hot melt adhesive layer to the third hot melt adhesive layer is 80:100:130; the thickness ratio of the inner layer pipe to the first hot melt adhesive layer is 10:0.8; the thickness ratio of the inner layer tube and the outer layer tube was 15:5.
The modified polyethylene is prepared by the following steps:
Step a: grinding the beta-eucryptite to the particle size of 1 mu m to obtain a material a;
Step b: adding 2 parts by weight of a material a into 200 parts by weight of Tris-hydrochloric acid buffer solution, stirring at normal temperature for 20min in ultrasonic with power of 300W, adding 4 parts by weight of dopamine hydrochloride, stirring at normal temperature for 20h for reaction, filtering, removing filtrate, washing with deionized water, and finally vacuum drying at 40 ℃ until the weight is constant to obtain polydopamine coated beta-eucryptite;
Step c: adding 2 parts by weight of nano silicon dioxide into 80 parts by weight of absolute ethyl alcohol, stirring for 20min at normal temperature in ultrasonic with power of 300W, then adding 0.5 part by weight of silane coupling agent and 0.05 part by weight of deionized water, stirring for 18h at 30 ℃ for reaction, centrifuging, taking precipitate, washing with the deionized water, and finally drying in vacuum at 70 ℃ until the weight is constant to obtain modified nano silicon dioxide;
Step d: the ultra-high molecular weight polyethylene powder, the polydopamine coated beta-eucryptite and the modified nano silicon dioxide are mixed according to the weight ratio, and the preparation is completed.
The pH of the Tris-hydrochloric acid buffer solution in the step b is 8.
The particle size of the nano silicon dioxide in the step c is 30nm.
And c, the silane coupling agent is a silane coupling agent YDH-171.
And c, the rotating speed of the centrifugation is 6000r/min, and the centrifugation time is 15min.
The molecular weight of the ultra-high molecular weight polyethylene powder in the step d is 200 ten thousand.
The weight ratio of the step d is 100:6:1.
The hot press molding temperature is 175 ℃, the pressure is 9.5MPa, and the time is 50min.
Example 2
The multilayer steel wire winding modified polyethylene wear-resistant composite pipe is sequentially provided with an inner layer pipe, a first hot melt adhesive layer, a first reinforcing layer, a second hot melt adhesive layer, a second reinforcing layer, a third hot melt adhesive layer and an outer layer pipe from inside to outside; the inner layer pipe is obtained by hot press molding of modified polyethylene by using a die; the outer layer tube is obtained by hot melting high-density polyethylene, injection molding the high-density polyethylene on the surface of the third hot melt adhesive layer and cooling and molding the high-density polyethylene.
The first hot melt adhesive layer is a coating formed by coating the hot melt adhesive on the surface of the inner layer pipe and then cooling; the second hot melt adhesive layer is a coating formed by cooling after the hot melt adhesive is coated on the surface of the first reinforcing layer; the third hot melt adhesive layer is a coating formed by cooling after the hot melt adhesive is coated on the surface of the second reinforcing layer.
The first reinforcing layer is a net-shaped framework formed by spirally winding first steel wires at an angle of about 75 degrees, and the net distance is 40mm; the second reinforcing layer is a reticular framework formed by spirally winding second steel wires at an angle of about 35 degrees, and the mesh spacing is 40mm; the diameters of the first steel wire and the second steel wire are the same and are 1.5mm.
The tensile strength of the first steel wire is 2200MPa, and the tensile strength of the second steel wire is 2200MPa.
The thickness ratio of the first hot melt adhesive layer to the second hot melt adhesive layer to the third hot melt adhesive layer is 100:130:140; the thickness ratio of the inner layer pipe to the first hot melt adhesive layer is 10:1; the thickness ratio of the inner layer tube and the outer layer tube was 17:6.
The modified polyethylene is prepared by the following steps:
step a: grinding the beta-eucryptite to the particle size of 2 mu m to obtain a material a;
Step b: adding 3 parts by weight of a material a into 250 parts by weight of Tris-hydrochloric acid buffer solution, stirring for 30min at normal temperature in ultrasonic with power of 400W, adding 5 parts by weight of dopamine hydrochloride, stirring for 24h at normal temperature for reaction, filtering, removing filtrate, washing with deionized water, and finally drying in vacuum at 50 ℃ until the weight is constant to obtain polydopamine coated beta-eucryptite;
Step c: adding 3 parts by weight of nano silicon dioxide into 100 parts by weight of absolute ethyl alcohol, stirring for 30min at normal temperature in ultrasonic with power of 400W, adding 1 part by weight of silane coupling agent and 0.1 part by weight of deionized water, stirring for 20h at 40 ℃ for reaction, centrifuging, taking precipitate, washing with deionized water, and finally vacuum drying at 80 ℃ until the weight is constant to obtain modified nano silicon dioxide;
Step d: the ultra-high molecular weight polyethylene powder, the polydopamine coated beta-eucryptite and the modified nano silicon dioxide are mixed according to the weight ratio, and the preparation is completed.
The pH of the Tris-hydrochloric acid buffer solution in the step b is 8.
The particle size of the nano silicon dioxide in the step c is 50nm.
And c, the silane coupling agent is a silane coupling agent YDH-171.
And c, centrifuging at 8000r/min for 20min.
The molecular weight of the ultra-high molecular weight polyethylene powder in the step d is 300 ten thousand.
The weight ratio of the step d is 100:8:2.
The hot press molding temperature is 180 ℃, the pressure is 10MPa, and the time is 50min.
Example 3
The multilayer steel wire winding modified polyethylene wear-resistant composite pipe is sequentially provided with an inner layer pipe, a first hot melt adhesive layer, a first reinforcing layer, a second hot melt adhesive layer, a second reinforcing layer, a third hot melt adhesive layer and an outer layer pipe from inside to outside; the inner layer pipe is obtained by hot press molding of modified polyethylene by using a die; the outer layer tube is obtained by hot melting high-density polyethylene, injection molding the high-density polyethylene on the surface of the third hot melt adhesive layer and cooling and molding the high-density polyethylene.
The first hot melt adhesive layer is a coating formed by coating the hot melt adhesive on the surface of the inner layer pipe and then cooling; the second hot melt adhesive layer is a coating formed by cooling after the hot melt adhesive is coated on the surface of the first reinforcing layer; the third hot melt adhesive layer is a coating formed by cooling after the hot melt adhesive is coated on the surface of the second reinforcing layer.
The first reinforcing layer is a net-shaped framework formed by spirally winding first steel wires at an angle of about 73 degrees, and the net distance is 20mm; the second reinforcing layer is a net-shaped framework formed by spirally winding second steel wires at an angle of about 33 degrees, and the net distance is 25mm; the diameters of the first steel wire and the second steel wire are the same and are 1.4mm.
The tensile strength of the first steel wire is 2000MPa, and the tensile strength of the second steel wire is 2100MPa.
The thickness ratio of the first hot melt adhesive layer to the second hot melt adhesive layer to the third hot melt adhesive layer is 90:120:135; the thickness ratio of the inner layer pipe to the first hot melt adhesive layer is 10:0.9; the thickness ratio of the inner layer tube and the outer layer tube was 16:5.5.
The modified polyethylene is prepared by the following steps:
Step a: grinding the beta-eucryptite to the particle size of 1.5 mu m to obtain a material a;
Step b: adding 2.5 parts by weight of a material a into 230 parts by weight of Tris-hydrochloric acid buffer solution, stirring for 25min at normal temperature in ultrasonic with power of 350W, adding 4.5 parts by weight of dopamine hydrochloride, stirring for 22h at normal temperature for reaction, filtering, removing filtrate, washing with deionized water, and finally vacuum drying at 45 ℃ until the weight is constant to obtain polydopamine coated beta-eucryptite;
Step c: adding 2.5 parts by weight of nano silicon dioxide into 90 parts by weight of absolute ethyl alcohol, stirring for 25min at normal temperature in ultrasonic with power of 350W, then adding 0.8 part by weight of silane coupling agent and 0.08 part by weight of deionized water, stirring for 19h at 35 ℃ for reaction, centrifuging, taking precipitate, washing with deionized water, and finally drying in vacuum at 75 ℃ until the weight is constant to obtain modified nano silicon dioxide;
Step d: the ultra-high molecular weight polyethylene powder, the polydopamine coated beta-eucryptite and the modified nano silicon dioxide are mixed according to the weight ratio, and the preparation is completed.
The pH of the Tris-hydrochloric acid buffer solution in the step b is 8.
The particle size of the nano silicon dioxide in the step c is 40nm.
And c, the silane coupling agent is a silane coupling agent YDH-171.
And c, the rotating speed of the centrifugation is 7000r/min, and the centrifugation time is 18min.
The molecular weight of the ultra-high molecular weight polyethylene powder in the step d is 250 ten thousand.
The weight ratio of the step d is 100:7:1.5.
The hot press molding temperature is 178 ℃, the pressure is 9.8MPa, and the time is 50min.
Comparative example 1
Based on example 1, steps a and b were not performed, and polydopamine-coated β -eucryptite was not added in step d, and the remainder was unchanged.
Comparative example 2
On the basis of example 1, step c was not performed, no modified nanosilicon dioxide was added in step d, and the rest was unchanged.
Comparative example 3
On the basis of example 1, step b was not performed, and the polydopamine-coated beta-eucryptite in step d was changed to material a, the remainder being unchanged.
Comparative example 4
On the basis of the embodiment 1, the material a in the step b is changed into nano silicon dioxide, the polydopamine coated beta-eucryptite is changed into polydopamine coated nano silicon dioxide, the nano silicon dioxide in the step c is changed into the material a, the modified nano silicon dioxide is changed into modified beta-eucryptite, the polydopamine coated beta-eucryptite in the step d is changed into polydopamine coated nano silicon dioxide, the modified nano silicon dioxide is changed into modified beta-eucryptite, and the rest is unchanged.
Comparative example 5
Based on example 1, steps a, b and c were not performed, polydopamine coated beta-eucryptite and modified nanosilicon dioxide were not added in step d, and the rest were unchanged.
Test example 1
Hardness testing:
the inner layer tubes of the multi-layer steel wire wound modified polyethylene wear-resistant composite tubes of examples 1-3 and comparative examples 1-5 were subjected to Shore hardness testing according to standard GB/T2411-2008, respectively.
TABLE 1 hardness test results
Test example 2
Friction coefficient test:
The modified polyethylenes prepared in examples 1-3 and comparative examples 1-5 were subjected to friction coefficient testing, respectively, in sections 1.3 and 1.4 of the friction and wear property study [ J ]. Plastics industry, 2021,49 (03): 38-43 ], of chemically crosslinked modified UHMWPE composites, reference to test methods (Liu Lou, guo Chuandong, gao Yu, et al), wherein the friction means is reciprocating friction and wear. On this basis, a friction heat test was also performed, namely, the test piece was continuously baked at 60 ℃ for 3 hours, then naturally cooled to room temperature, recorded as one cycle, and the above friction coefficient test was repeated after ten cycles.
TABLE 2 results of Friction coefficient test
| Coefficient of friction | Coefficient of friction (after ten cycles) | |
| Example 1 | 0.104 | 0.121 |
| Example 2 | 0.095 | 0.110 |
| Example 3 | 0.100 | 0.122 |
| Comparative example 1 | 0.149 | 0.207 |
| Comparative example 2 | 0.142 | 0.184 |
| Comparative example 3 | 0.106 | 0.143 |
| Comparative example 4 | 0.105 | 0.139 |
| Comparative example 5 | 0.186 | 0.284 |
As can be seen by comparing examples 1-3, comparative examples 1-5 and test examples 1-2:
Comparative example 1 differs from example 1 in that: the modified polyethylene is not added with polydopamine to coat the beta-eucryptite.
Comparative example 2 differs from example 1 in that: modified nano silicon dioxide is not added into the modified polyethylene.
Comparative example 3 differs from example 1 in that: the polydopamine coated beta-eucryptite in the modified polyethylene is changed into beta-eucryptite, namely, coating treatment is not carried out.
Comparative example 4 differs from example 1 in that: the nanometer silicon dioxide is coated by polydopamine, and the beta-eucryptite is modified by a silane coupling agent.
Comparative example 5 differs from example 1 in that: the modified polyethylene is the ultra-high molecular weight polyethylene.
As can be seen from the comparison of examples 1-3, comparative examples 1-5 and test example 1, the inner layer tube of the multilayer steel wire winding modified polyethylene wear-resistant composite tube provided by the invention has excellent hardness, and can promote wear resistance to a certain extent.
As can be seen from the comparison of examples 1-3, comparative examples 1-5 and test example 2, the inner layer tube of the multi-layer steel wire winding modified polyethylene wear-resistant composite tube provided by the invention has a lower friction coefficient, and even if the multi-layer steel wire winding modified polyethylene wear-resistant composite tube is subjected to repeated heating and cooling (continuous heat accumulation and dispersion), the friction coefficient is still less increased, so that the multi-layer steel wire winding modified polyethylene wear-resistant composite tube is very suitable for long-term material conveying. Meanwhile, the side surface shows that after the beta-eucryptite is coated by polydopamine, the beta-eucryptite is not easy to separate out and migrate out of the system in the long-term negative thermal expansion process.
The present invention is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present invention.
Claims (10)
1. The utility model provides a multilayer steel wire winding modified polyethylene wear-resisting composite tube which characterized in that: the multilayer steel wire winding modified polyethylene wear-resistant composite pipe is sequentially provided with an inner layer pipe, a first hot melt adhesive layer, a first reinforcing layer, a second hot melt adhesive layer, a second reinforcing layer, a third hot melt adhesive layer and an outer layer pipe from inside to outside; the inner layer pipe is obtained by hot press molding of modified polyethylene by using a die; the outer layer tube is obtained by hot melting high-density polyethylene, injection molding the high-density polyethylene on the surface of the third hot melt adhesive layer and cooling and molding the high-density polyethylene.
2. The multi-layer steel wire wound modified polyethylene wear-resistant composite pipe according to claim 1, wherein: the first hot melt adhesive layer is a coating formed by coating the hot melt adhesive on the surface of the inner layer pipe and then cooling; the second hot melt adhesive layer is a coating formed by cooling after the hot melt adhesive is coated on the surface of the first reinforcing layer; the third hot melt adhesive layer is a coating formed by cooling after the hot melt adhesive is coated on the surface of the second reinforcing layer.
3. The multi-layer steel wire wound modified polyethylene wear-resistant composite pipe according to claim 1, wherein: the first reinforcing layer is a net-shaped framework formed by spirally winding a first steel wire at an angle of about 70-75 degrees, and the net distance is 10-40mm; the second reinforcing layer is a reticular framework formed by spirally winding second steel wires at an angle of 30-35 degrees, and the mesh spacing is 10-40mm; the diameters of the first steel wire and the second steel wire are the same and are 1.3-1.5mm.
4. The multi-layer steel wire wound modified polyethylene wear-resistant composite pipe according to claim 1, wherein: the thickness ratio of the first hot melt adhesive layer to the second hot melt adhesive layer to the third hot melt adhesive layer is 80-100:100-130:130-140; the thickness ratio of the inner layer pipe to the first hot melt adhesive layer is 10:0.8-1; the thickness ratio of the inner layer tube to the outer layer tube is 15-17:5-6.
5. The multi-layer steel wire wound modified polyethylene wear-resistant composite pipe according to claim 1, wherein: the modified polyethylene is prepared by the following steps:
step a: grinding the beta-eucryptite to the particle size of 1-2 mu m to obtain a material a;
Step b: adding 2-3 parts by weight of a material a into 200-250 parts by weight of Tris-hydrochloric acid buffer solution, stirring at normal temperature for 20-30min in ultrasonic with power of 300-400W, adding 4-5 parts by weight of dopamine hydrochloride, stirring at normal temperature for 20-24h for reaction, filtering, removing filtrate, washing by using deionized water, and finally vacuum drying at 40-50 ℃ until the weight is constant to obtain polydopamine coated beta-eucryptite;
Step c: adding 2-3 parts by weight of nano silicon dioxide into 80-100 parts by weight of absolute ethyl alcohol, stirring for 20-30min at normal temperature in ultrasonic with power of 300-400W, mixing, adding 0.5-1 parts by weight of silane coupling agent and 0.05-0.1 part by weight of deionized water, stirring for 18-20h at 30-40 ℃ for reaction, centrifuging, taking precipitate, washing with deionized water, and finally drying in vacuum at 70-80 ℃ until the weight is constant to obtain modified nano silicon dioxide;
Step d: the ultra-high molecular weight polyethylene powder, the polydopamine coated beta-eucryptite and the modified nano silicon dioxide are mixed according to the weight ratio, and the preparation is completed.
6. The multi-layer steel wire winding modified polyethylene wear-resistant composite pipe according to claim 5, wherein: the particle size of the nano silicon dioxide in the step c is 30-50nm.
7. The multi-layer steel wire winding modified polyethylene wear-resistant composite pipe according to claim 5, wherein: the silane coupling agent in the step c is at least one of a silane coupling agent YDH-171, a silane coupling agent KH-550 and a silane coupling agent KH-570.
8. The multi-layer steel wire winding modified polyethylene wear-resistant composite pipe according to claim 5, wherein: the molecular weight of the ultra-high molecular weight polyethylene powder in the step d is 200-300 ten thousand.
9. The multi-layer steel wire winding modified polyethylene wear-resistant composite pipe according to claim 5, wherein: the weight ratio of the step d is 100:6-8:1-2.
10. The multi-layer steel wire wound modified polyethylene wear-resistant composite pipe according to claim 1, wherein: the hot press molding temperature is 175-180 ℃, the pressure is 9.5-10MPa, and the time is 50min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410440406.5A CN118110847B (en) | 2024-04-12 | 2024-04-12 | Multilayer steel wire winding modified polyethylene wear-resistant composite pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410440406.5A CN118110847B (en) | 2024-04-12 | 2024-04-12 | Multilayer steel wire winding modified polyethylene wear-resistant composite pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN118110847A true CN118110847A (en) | 2024-05-31 |
| CN118110847B CN118110847B (en) | 2024-08-23 |
Family
ID=91217184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410440406.5A Active CN118110847B (en) | 2024-04-12 | 2024-04-12 | Multilayer steel wire winding modified polyethylene wear-resistant composite pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118110847B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015127288A (en) * | 2013-05-23 | 2015-07-09 | 日本電気硝子株式会社 | Filler powder and resin composition |
| US20160083557A1 (en) * | 2013-05-23 | 2016-03-24 | Nippon Electric Glass Co., Ltd. | Filler powder and method for manufacturing same |
| CN110886909A (en) * | 2019-11-01 | 2020-03-17 | 日丰企业（佛山）有限公司 | High-heat-conductivity oxygen-resistant anti-scaling wear-resistant composite pipe |
| CN111231385A (en) * | 2020-02-18 | 2020-06-05 | 广东东方管业有限公司 | A kind of preparation technology of multi-layer steel wire wound modified polyethylene composite pipe |
| CN210920394U (en) * | 2019-09-30 | 2020-07-03 | 江苏清通管业有限公司 | Steel wire mesh framework high-density mesh spacing plastic composite pipe |
| CN112250078A (en) * | 2020-10-29 | 2021-01-22 | 淄博辰东新材料有限公司 | Ultralow-expansion-coefficient eucryptite and preparation method thereof |
| CN113524745A (en) * | 2021-07-01 | 2021-10-22 | 金塑企业集团（上海）有限公司 | High-strength polyolefin composite pipe and preparation method thereof |
| CN116293099A (en) * | 2023-04-08 | 2023-06-23 | 四川信固科技有限公司 | A multi-layer steel wire wound modified polyethylene wear-resistant composite pipe |
| CN220540494U (en) * | 2023-05-09 | 2024-02-27 | 山东东宏管业股份有限公司 | Metal wire and functional strip winding composite pipe |
-
2024
- 2024-04-12 CN CN202410440406.5A patent/CN118110847B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015127288A (en) * | 2013-05-23 | 2015-07-09 | 日本電気硝子株式会社 | Filler powder and resin composition |
| US20160083557A1 (en) * | 2013-05-23 | 2016-03-24 | Nippon Electric Glass Co., Ltd. | Filler powder and method for manufacturing same |
| CN210920394U (en) * | 2019-09-30 | 2020-07-03 | 江苏清通管业有限公司 | Steel wire mesh framework high-density mesh spacing plastic composite pipe |
| CN110886909A (en) * | 2019-11-01 | 2020-03-17 | 日丰企业（佛山）有限公司 | High-heat-conductivity oxygen-resistant anti-scaling wear-resistant composite pipe |
| CN111231385A (en) * | 2020-02-18 | 2020-06-05 | 广东东方管业有限公司 | A kind of preparation technology of multi-layer steel wire wound modified polyethylene composite pipe |
| CN112250078A (en) * | 2020-10-29 | 2021-01-22 | 淄博辰东新材料有限公司 | Ultralow-expansion-coefficient eucryptite and preparation method thereof |
| CN113524745A (en) * | 2021-07-01 | 2021-10-22 | 金塑企业集团（上海）有限公司 | High-strength polyolefin composite pipe and preparation method thereof |
| CN116293099A (en) * | 2023-04-08 | 2023-06-23 | 四川信固科技有限公司 | A multi-layer steel wire wound modified polyethylene wear-resistant composite pipe |
| CN220540494U (en) * | 2023-05-09 | 2024-02-27 | 山东东宏管业股份有限公司 | Metal wire and functional strip winding composite pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN118110847B (en) | 2024-08-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101725774B (en) | Mine wear-resistant composite metal plastic pipe, special preparation equipment thereof and preparation method thereof | |
| CN101178102A (en) | Wet copper-based powder metallurgy friction plate and manufacturing method | |
| CN109851999A (en) | A kind of preparation method of carbon fibre composite | |
| CN118110847B (en) | Multilayer steel wire winding modified polyethylene wear-resistant composite pipe | |
| CN110452398B (en) | Preparation method of self-lubricating fabric liner composite material with interface consumption and heat aggregation under high-speed working condition | |
| CN116606572A (en) | Modified nano boron carbide/molybdenum disulfide reinforced polytetrafluoroethylene self-lubricating composite coating and preparation method thereof | |
| CN118181874A (en) | A steel wire mesh skeleton polyethylene composite pipe for cross-sea engineering and its preparation method | |
| CN1621725A (en) | Metal-plastic composite cold/hot water pipe and manufacturing method thereof | |
| CN103062520B (en) | Novel high pressure-resistant HDPE water pipes | |
| CN203083212U (en) | Return air heat exchange tube and refrigerator with return air heat exchange tube | |
| CN101354068A (en) | Low temperature carbonization pre-oxygen thread car clutch sheet or brake sheet and production process thereof | |
| CN111500014A (en) | Polyether-ether-ketone composite material and preparation method thereof | |
| CN106433020A (en) | Binary environmental protection polyether ether ketone brake block material and preparation method thereof | |
| CN201239694Y (en) | Equipment for manufacturing steel plastic composite pipe | |
| CN1693365A (en) | A friction-increasing nylon composite material and its preparation process | |
| CN208535347U (en) | A kind of high pressure resistant reinforced thermoplastics multiple tube | |
| CN215825989U (en) | Polytetrafluoroethylene lining bonding device | |
| CN116554836B (en) | Lead-acid storage battery sealant and preparation method thereof | |
| CN112143346A (en) | Graphene oxide grafted nano Fe2O3Preparation method of/epoxy composite coating | |
| CN208831953U (en) | A kind of high performance corrosion-proof elbow | |
| CN1269390A (en) | Adhesive for connecting carbon material | |
| CN115895550A (en) | A kind of epoxy resin binder, preparation method and application | |
| CN114957743A (en) | Basalt fiber-reinforced polypropylene composite material coated with copper sulfide nanosheets and preparation method thereof | |
| CN206242594U (en) | A kind of computer desk carbon fiber composite board | |
| CN101817217A (en) | Method for manufacturing heat-conduction plastic pipe |
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 |