CN114347537A - Production process of TPE (thermoplastic elastomer) rubber-coated wheel - Google Patents
Production process of TPE (thermoplastic elastomer) rubber-coated wheel Download PDFInfo
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- CN114347537A CN114347537A CN202111382395.2A CN202111382395A CN114347537A CN 114347537 A CN114347537 A CN 114347537A CN 202111382395 A CN202111382395 A CN 202111382395A CN 114347537 A CN114347537 A CN 114347537A
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Abstract
The invention discloses a production process of a TPE (thermoplastic elastomer) rubber-coated wheel. It includes wheel hub, rim plate, rubber coating, and the rim plate parcel is in the wheel hub outer lane, and rubber coating parcel is in the rim plate outer lane, and production technology includes following step: the wheel disc is characterized in that a plurality of connecting rods are connected in the axial direction of the wheel disc, vertical rods are connected in the radial direction of the wheel disc, a flow channel is formed by the connecting rods, the vertical rods and the wheel disc and is positioned on the periphery of the wheel disc, a plurality of through holes penetrating through the surface are formed in the connecting rods, and the connecting rods are uniformly distributed on the inner wall of the wheel disc in a staggered mode; secondly, drying the wheel disc, then placing the wheel disc into a forming die, and drying the raw material of the rubber coating layer; and thirdly, putting the wheel disc into an injection molding machine, putting the raw materials of the rubber coating layer into a machine head of the injection molding screw rod machine for extrusion, controlling the injection molding machine to keep the temperature before opening the mold, and wrapping the wheel disc on the outer ring of the wheel hub after the mold opening is subjected to air cooling treatment to obtain the TPE rubber-coated wheel. The invention has the beneficial effects that: the wear resistance and the elasticity of the prepared TPE encapsulated wheel are improved, and degumming in the using process is avoided.
Description
Technical Field
The invention relates to the technical field of new materials, in particular to a production process of a TPE (thermoplastic elastomer) rubber-coated wheel.
Background
The TPE is a thermoplastic elastomer material, has the characteristics of high strength, high resilience and injection molding processing, and has wide application range, environmental protection, no toxicity, safety and excellent colorability. The rubber has the advantages of soft touch, weather resistance, fatigue resistance, temperature resistance and excellent processing performance, does not need vulcanization, can be recycled to reduce the cost, can be subjected to secondary injection molding, can be coated and adhered with matrix materials such as PP, PE, PC, PS, ABS and the like, and can also be formed independently. With the improvement of living standard and the development of automation technology, the caster plays an important role in life. The current TPE outer-wrapped caster has poor wear resistance, poor adhesion with a polypropylene inner core and easy degumming, and the outer-wrapped wheel has no elasticity, so that the outer-wrapped wheel is easy to wear and has short service life in the use process of the caster.
Disclosure of Invention
The invention provides a production process of a TPE encapsulated caster wheel, which aims to overcome the defects that a caster wheel coated with TPE in the prior art is poor in wear resistance, easy to degum and non-elastic in wheel coating.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a TPE rubber coating wheel production technology, TPE rubber coating wheel includes wheel hub, rim plate, encapsulating layer, the rim plate is made by polypropylene, encapsulating layer is made by the TPE material, the rim plate parcel is in the wheel hub outer lane, encapsulating layer parcel is in the rim plate outer lane, the production technology of TPE rubber coating wheel includes following step:
preprocessing: the wheel disc is axially connected with a plurality of connecting rods, the wheel disc is radially connected with a vertical rod, the connecting rods, the vertical rod and the wheel disc form a flow channel, the flow channel is positioned on the periphery of the wheel disc, the connecting rods are provided with a plurality of through holes penetrating through the surface, and the connecting rods are uniformly distributed on the inner wall of the wheel disc in a staggered manner;
pretreatment: the wheel disc is dried and then placed in a forming die, and the raw material of the rubber coating layer is dried;
and (3) encapsulation treatment: and (3) performing injection molding on the wheel disc by using an injection molding machine to enable the outer ring of the wheel disc to be wrapped by a rubber coating layer, wherein the injection molding temperature is 220-265 ℃, the pressure is 78-98bar, the speed is 32-52g/s, the pressure maintaining time is 8.5-9.5 seconds, the heat is preserved before the mould opening, the heat preservation temperature is 70-80 ℃, the heat preservation time is 4-6min, and the wheel disc is wrapped on the outer ring of the hub by air cooling treatment after the mould opening to obtain the TPE rubber-coated wheel.
The rim plate of TPE rubber coating wheel among this technical scheme adopts polypropylene to make, can increase the bearing capacity of wheel, and through at rim plate outer lane parcel encapsulating layer, the encapsulating layer is made by the TPE material, can increase the wearability and the elasticity of the TPE rubber coating wheel of making. The encapsulating layer is encapsulated into the wheel disc through an injection molding process, one part of the encapsulating layer with good fluidity per se flows into a runner on the periphery of the wheel disc from a gap between the vertical rod and the connecting rod, the other part of the encapsulating layer falls into the runner through the through hole and is finally attached to the vertical rod and the transverse rod, and under the mutual matching of the vertical rod, the transverse rod and the runner, the problem that the encapsulating wheel in the technical scheme is easy to degum in the using process can be solved. The through-hole shape is round platform shape, and the one end that the through-hole is little is towards the rim plate, and the one end that the through-hole is big is towards the rubber coating layer, is favorable to the rubber coating layer to flow into the runner back through the through-hole, further increases the firm in connection nature of rim plate and rubber coating layer, and the rubber coating layer is difficult for breaking away from with the rim plate.
Preferably, the montant shape is the round platform shape, the little one end of montant and rim plate fixed connection, the radial outside dispersion of rim plate is followed to the big one end of montant, connecting rod and montant mutually perpendicular, the connecting rod uses the montant to distribute at the rim plate inner wall as the center, connecting rod one end and rim plate inner wall fixed connection, the connecting rod other end is unsettled in the rim plate, and the injection molding advances and flows into the runner between the free end of connecting rod and the montant. The montant shape is the round platform shape, the little one end of montant and rim plate fixed connection, the radial outside dispersion of rim plate is followed to the big one end of montant, is favorable to the rubber coating layer to fall into the runner smoothly, can avoid the coming unstuck of rubber coating layer and rim plate simultaneously, montant and connecting rod mutually perpendicular are favorable to increasing the firm in connection nature between rubber coating layer and montant, connecting rod, the rim plate, avoid breaking away from of rubber coating layer and rim plate.
Preferably, the temperature of the wheel disc drying treatment is 60-80 ℃, the time of the drying treatment is 0.5-1 hour, the temperature of the raw material drying treatment of the rubber coating layer is 80-110 ℃, and the time of the drying treatment is 2-3 hours. After a plurality of experiments, the rubber coating layer prepared by the parameters and the wheel disc are treated, so that the finally prepared rubber coated wheel has good wear resistance and elasticity, and meanwhile, the rubber coating layer is not easy to separate from the wheel disc, and the degumming of the rubber coating layer in the using process is avoided.
Preferably, the preparation method of the encapsulating layer comprises the following steps:
preparing raw materials, wherein the raw materials comprise the following raw materials in parts by weight: the SEBS content is 100 parts; 15-25 parts of white mineral oil; 15-20 parts of polybutylene succinate; 15-20 parts of polyhydroxyalkanoate; 10-20 parts of decabromodiphenylethane; 5-10 parts of antimony trioxide; 20-30 parts of ethylene propylene diene monomer; 0.5-1 part of flame retardant; 1-5 parts of activated carbon; 1-3 parts of maleic anhydride grafted polypropylene;
mixing raw materials, namely putting SEBS and white mineral oil into a stirrer, and stirring for 5 minutes; then pouring the polybutylene succinate, the polyhydroxyalkanoate, the decabromodiphenylethane, the antimony trioxide, the ethylene propylene diene monomer rubber, the flame retardant, the active carbon and the maleic anhydride grafted polypropylene into a stirrer together, and stirring for 5-8 minutes to fully mix;
and (3) extruding and granulating, namely putting the mixed material into a double-screw granulator, controlling the temperature at 150-230 ℃, and extruding and granulating. The SEBS has good ultraviolet stability, oxygen resistance, thermal stability, high elasticity and good solubility, blending performance and white mineral oil, as well as polybutylene succinate, polyhydroxyalkanoate, decabromodiphenylethane, antimony trioxide, ethylene propylene diene monomer, a flame retardant, active carbon and maleic anhydride grafted polypropylene can be well blended, so that the prepared encapsulating layer has good elasticity, the polybutylene succinate has excellent mechanical property and good heat resistance, the polyhydroxyalkanoate has good biodegradability, decabromodiphenylethane is used as a flame retardant with wide application, has good thermal stability and good ultraviolet resistance, the antimony trioxide belongs to an additive flame retardant and is used with other flame retardants, a synergistic effect can be generated among the components, when the antimony trioxide is used with decabromodiphenylethane, the synergistic effect obviously improves the flame retardant effect, the wear resistance of the ethylene propylene diene monomer is good, the active carbon is used as a catalyst, the flame retardant effect of a flame retardant and antimony trioxide can be improved, and the maleic anhydride grafted polypropylene is used as a compatilizer, so that the compatibility of the rubber coating layer and the wheel disc is improved, and the prepared TPE rubber coated wheel is not easy to degum.
Preferably, the flame retardant is at least one of magnesium hydroxide and aluminum hydroxide. Magnesium hydroxide is decomposed and absorbs the surface heat of the combustion object to play a role of flame retardance when being heated (340-490 ℃); meanwhile, a large amount of moisture is released to dilute oxygen on the surface of the combustible, and active magnesium oxide generated by decomposition is attached to the surface of the combustible to further prevent the combustion from proceeding. The magnesium hydroxide does not generate any harmful substance in the whole flame-retardant process, the decomposed product of the magnesium hydroxide can absorb a large amount of harmful gas and smoke generated by the high-molecular combustion of rubber, plastics and the like while resisting flame, and the active magnesium oxide continuously absorbs the incompletely combusted melting residues, so that the smoke is eliminated and the molten drops are prevented while the combustion is stopped quickly. The aluminium hydroxide is used as fire retardant, high temperature decomposes chemical binding water, decomposition reaction absorbs heat to inhibit combustion of high polymer, and released water can dilute the concentration of combustible matter to reach the aim of fire retarding.
Preferably, the hub is connected with a plurality of connecting pieces, the connecting pieces are uniformly distributed on the surface of the hub, one end of each connecting piece is detachably connected with the hub, and the other end of each connecting piece is detachably connected with the wheel disc. The connecting piece is used for strengthening the firm in connection nature of rim plate and wheel hub, reduces the noise in the rubber coating wheel use, can make the rim plate and wheel hub as frictional force each other when the bulk motion little simultaneously, prolongs the life of rubber coating wheel, is favorable to avoiding the elasticity of rubber coating wheel to damage rim plate and wheel hub.
Preferably, the connecting piece is rectangular in shape, the connecting piece is connected with a connecting column, the connecting column is connected with a fixing bolt, and the fixing bolt penetrates through the connecting piece and the connecting column and then is in threaded connection with the hub and the wheel disc. The connecting piece is connected with the wheel hub and the wheel disc through the fixing bolt and the connecting column, so that the friction force between the wheel disc and the wheel hub is small when the wheel disc and the wheel hub move as a whole, the service life of the rubber-coated wheel is prolonged, and the rubber-coated wheel is prevented from being elastically damaged by the wheel disc and the wheel hub.
Preferably, the connecting columns are distributed at two ends of the connecting piece, one end of each connecting column is fixedly connected with the connecting piece, and the other end of each connecting column is in contact with the wheel disc. The spliced pole can play the guide effect to fixing bolt on the one hand, and the on the other hand is convenient for install the connecting piece.
Preferably, one side face, deviating from the hub, of the connecting piece is connected with a fixing ring, the fixing ring is circular, the fixing ring and the hub are concentric, and the fixing ring and the wheel disc are detachably connected. The retainer plate is used for fixing a plurality of connecting piece, further increases the firm in connection nature of wheel hub and rim plate, is favorable to avoiding the elasticity of rubber coating wheel to damage rim plate and wheel hub.
Preferably, the joint of the wheel disc and the rubber coating layer is coated with adhesive after the injection molding is finished. The adhesive further increases the connection firmness of the wheel disc and the rubber coating layer, and prevents the rubber coated wheel from degumming after long-time use.
The invention has the beneficial effects that: the wear resistance and the elasticity of the prepared TPE encapsulated wheel are improved, and degumming in the using process is avoided; the connection firmness of the wheel disc and the rubber coating layer is improved, and the rubber coating layer and the wheel disc are prevented from degumming; the flame retardant effect is good, the environment is protected, the stability is good, and the rubber-coated wheel is not easy to degum; the service life of the rubber-coated wheel is prolonged, the rubber-coated wheel is prevented from being elastically damaged on the wheel disc and the wheel hub, and noise in the use process of the rubber-coated wheel is reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
fig. 3 is a schematic view of the structure of the connector.
In the figure: 1. the wheel comprises a wheel hub, 2 wheel discs, 3 rubber coating layers, 4 connecting rods, 5 vertical rods, 6 flow channels, 7 through holes, 8 connecting pieces, 9 connecting columns, 10 fixing bolts and 11 fixing rings.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in fig. 1 and 2, a TPE rubber-coated wheel production process, the TPE rubber-coated wheel comprises a wheel hub 1, a wheel disc 2 and a rubber coating layer 3, the wheel disc 2 is made of polypropylene, the rubber coating layer 3 is made of TPE materials, the wheel disc 2 is wrapped on the outer ring of the wheel hub 1, the rubber coating layer 3 is wrapped on the outer ring of the wheel disc 2, and the TPE rubber-coated wheel production process comprises the following steps:
preprocessing: the wheel disc 2 is axially connected with a plurality of connecting rods 4, the wheel disc 2 is radially connected with a vertical rod 5, the connecting rods 4, the vertical rod 5 and the wheel disc 2 form a flow channel 6, the flow channel 6 is positioned at the periphery of the wheel disc 2, the connecting rods 4 are provided with a plurality of through holes 7 penetrating through the surface, and the connecting rods 4 are uniformly distributed on the inner wall of the wheel disc 2 in a staggered manner;
pretreatment: the wheel disc 2 is dried and then placed in a forming die, and the raw material of the rubber coating layer 3 is dried;
and (3) encapsulation treatment: and (3) performing injection molding on the wheel disc 2 by using an injection molding machine to enable the outer ring of the wheel disc 2 to be wrapped by a layer of rubber-coated layer 3, wherein the injection molding temperature is 220-265 ℃, the pressure is 78-98bar, the speed is 32-52g/s, the pressure maintaining time is 8.5-9.5 seconds, the temperature is kept at 70-80 ℃ before the mould opening, the temperature is kept for 4-6min, and the wheel disc 2 is wrapped on the outer ring of the hub 1 through air cooling treatment after the mould opening to obtain the TPE rubber-coated wheel.
As shown in fig. 2, montant 5 shape is the round platform shape, the little one end of montant 5 and 2 fixed connection on the rim plate, the radial outside dispersion of 2 along the rim plate of the big one end of montant 5, connecting rod 4 and montant 5 mutually perpendicular, connecting rod 4 uses montant 5 to distribute at 2 inner walls on the rim plate as the center, 4 one ends of connecting rod and 2 inner wall fixed connection on the rim plate, the connecting rod 4 other end is unsettled in rim plate 2, the injection molding advances and flows in runner 6 between the free end of connecting rod 4 and montant 5.
The drying temperature of the wheel disc 2 is 60-80 ℃, the drying time is 0.5-1 hour, the drying temperature of the raw material of the rubber coating layer 3 is 80-110 ℃, and the drying time is 2-3 hours.
The preparation method of the encapsulating layer 3 comprises the following steps:
preparing raw materials, wherein the raw materials comprise the following raw materials in parts by weight: the SEBS content is 100 parts; 15-25 parts of white mineral oil; 15-20 parts of polybutylene succinate; 15-20 parts of polyhydroxyalkanoate; 10-20 parts of decabromodiphenylethane; 5-10 parts of antimony trioxide; 20-30 parts of ethylene propylene diene monomer; 0.5-1 part of flame retardant; 1-5 parts of activated carbon; 1-3 parts of maleic anhydride grafted polypropylene;
mixing raw materials, namely putting SEBS and white mineral oil into a stirrer, and stirring for 5 minutes; then pouring the polybutylene succinate, the polyhydroxyalkanoate, the decabromodiphenylethane, the antimony trioxide, the ethylene propylene diene monomer rubber, the flame retardant, the active carbon and the maleic anhydride grafted polypropylene into a stirrer together, and stirring for 5-8 minutes to fully mix;
and (3) extruding and granulating, namely putting the mixed material into a double-screw granulator, controlling the temperature at 150-230 ℃, and extruding and granulating.
The flame retardant is at least one of magnesium hydroxide and aluminum hydroxide.
As shown in figure 1, wheel hub 1 is connected with a plurality of connecting pieces 8, and connecting pieces 8 are at 1 surperficial evenly distributed of wheel hub, and 8 one ends of connecting pieces can be dismantled with wheel hub 1 and be connected, and 8 other ends of connecting pieces can be dismantled with rim plate 2 and be connected.
As shown in fig. 1 and 3, the connecting piece 8 is rectangular, the connecting piece 8 is connected with a connecting column 9, the connecting column 9 is connected with a fixing bolt 10, and the fixing bolt 10 penetrates through the connecting piece 8 and the connecting column 9 and then is in threaded connection with the hub 1 and the wheel disc 2.
As shown in fig. 3, the connecting columns 9 are distributed at two ends of the connecting piece 8, one end of each connecting column 9 is fixedly connected with the connecting piece 8, and the other end of each connecting column 9 is attached to the wheel disc 2.
As shown in figure 1, one side of the connecting piece 8 departing from the hub 1 is connected with a fixing ring 11, the fixing ring 11 is circular, the fixing ring 11 and the hub 1 are concentric, and the fixing ring 11 and the wheel disc 2 are detachably connected.
And after the injection molding is finished, the joint of the wheel disc 2 and the rubber coating layer 3 is coated with adhesive.
Example 1:
the raw materials and weights in example 1 are shown in Table 1
TABLE 1 raw materials and their weights
In example 1, the encapsulating layer 3 was prepared from the above raw material and then encapsulated to the outer ring of the wheel disc 2 by an injection molding process.
Wherein, the wheel disc 2 is dried at the temperature of 60 ℃ for 1 hour, the rubber coating layer 3 is dried at the temperature of 80 ℃ for 3 hours; the injection temperature is 220-; the temperature is kept at 70 ℃ for 6min during the rubber coating treatment, the mold is opened, and the wheel disc 2 is wrapped on the outer ring of the wheel hub 1 after cold air treatment, so that the TPE rubber-coated wheel is obtained;
drying the wheel disc 2 at the temperature of 70 ℃ for 0.8 hour, and drying the raw material of the rubber coating layer 3 at the temperature of 95 ℃ for 2.5 hours; the injection temperature is 220-; the heat preservation temperature is 75 ℃ during the encapsulation treatment, the heat preservation time is 5min, the mold is opened, the wheel disc 2 is wrapped on the outer ring of the wheel hub 1 after cold air treatment, and the TPE encapsulated wheel is obtained;
drying the wheel disc 2 at 80 ℃ for 0.5 hour, and drying the raw material of the rubber coating layer 3 at 110 ℃ for 2 hours; the injection temperature is 220-; and (3) during the encapsulation treatment, keeping the temperature at 80 ℃ for 4min, opening the mold and carrying out cold air treatment to obtain the TPE encapsulated wheel.
Example 2:
the raw materials and weights in example 2 are shown in Table 2
TABLE 2 raw materials and their weights
| Raw materials | Weight (D) |
| SEBS | 100 |
| White mineral oil | 20 |
| Polybutylene succinate | 18 |
| Polyhydroxyalkanoates | 18 |
| Decabromodiphenylethane | 15 |
| |
7 |
| Ethylene propylene diene monomer | 25 |
| Flame retardant | 0.8 |
| |
3 |
| Maleic anhydride grafted |
2 |
In example 2, the encapsulating layer 3 was prepared from the above raw materials, and the other processing procedures were the same as those in example 1 and will not be described again.
Example 3:
the raw materials and weights in example 3 are shown in Table 3
TABLE 3 raw materials and their weights
| Raw materials | Weight (D) |
| SEBS | 100 |
| White mineral oil | 25 |
| Polybutylene succinate | 15 |
| Polyhydroxyalkanoates | 20 |
| |
10 |
| |
10 |
| Ethylene propylene diene monomer | 30 |
| Flame retardant | 0.5 |
| |
1 |
| Maleic anhydride grafted |
1 |
In example 3, the encapsulating layer 3 was prepared from the above raw materials, and the other processing procedures were the same as those in example 1 and will not be described again.
The experimental results are as follows:
by comparing the results of the above examples, in example 2, the wheel disc 2 is dried at 70 ℃ for 0.8 hour, the raw material of the encapsulating layer 3 is dried at 95 ℃ for 2.5 hours, the heat preservation temperature during encapsulating is 75 ℃ for 5min, the wheel disc 2 is wrapped on the outer ring of the hub 1 after opening the mold and cold air treatment, and the TPE encapsulated wheel is obtained, wherein example 2 is superior to the encapsulated wheels prepared in other examples in terms of wear resistance, elasticity and non-degumming.
Claims (10)
1. The utility model provides a TPE rubber coating wheel production technology, characterized by, TPE rubber coating wheel includes wheel hub (1), rim plate (2), rubber coating layer (3), rim plate (2) are made by polypropylene, rubber coating layer (3) are made by the TPE material, rim plate (2) parcel is in wheel hub (1) outer lane, rubber coating layer (3) parcel is in rim plate (2) outer lane, and the production technology of TPE rubber coating wheel includes following step:
preprocessing: the wheel disc (2) is axially connected with a plurality of connecting rods (4), the wheel disc (2) is radially connected with a vertical rod (5), the connecting rods (4), the vertical rod (5) and the wheel disc (2) form a flow channel (6), the flow channel (6) is positioned on the periphery of the wheel disc (2), the connecting rods (4) are provided with a plurality of through holes (7) penetrating through the surface, and the connecting rods (4) are uniformly distributed on the inner wall of the wheel disc (2) in a staggered manner;
pretreatment: the wheel disc (2) is dried and then placed in a forming die, and the raw material of the rubber coating layer (3) is dried;
and (3) encapsulation treatment: and (3) performing injection molding on the wheel disc (2) by using an injection molding machine to enable the outer ring of the wheel disc (2) to be wrapped by a layer of rubber coating layer (3), wherein the injection molding temperature is 220-265 ℃, the pressure is 78-98bar, the speed is 32-52g/s, the pressure maintaining time is 8.5-9.5 seconds, the temperature is kept at 70-80 ℃ before mold opening, the temperature is kept for 4-6min, and the wheel disc (2) is wrapped on the outer ring of the wheel hub (1) through air cooling treatment after the mold opening to obtain the TPE rubber-coated wheel.
2. The production process of the TPE rubber-coated wheel as claimed in claim 1, wherein the vertical rod (5) is in a round table shape, the small end of the vertical rod (5) is fixedly connected with the wheel disc (2), the large end of the vertical rod (5) is radially and outwardly dispersed along the wheel disc (2), the connecting rod (4) and the vertical rod (5) are perpendicular to each other, the connecting rod (4) is distributed on the inner wall of the wheel disc (2) by taking the vertical rod (5) as a center, one end of the connecting rod (4) is fixedly connected with the inner wall of the wheel disc (2), the other end of the connecting rod (4) is suspended in the wheel disc (2), and the injection plastic flows into the flow channel (6) between the suspended end of the connecting rod (4) and the vertical rod (5).
3. The production process of the TPE encapsulated wheel as claimed in claim 1, wherein the drying temperature of the wheel disc (2) is 60-80 ℃ and the drying time is 0.5-1 hour, the drying temperature of the raw material of the encapsulating layer (3) is 80-110 ℃ and the drying time is 2-3 hours.
4. The process for producing a TPE encapsulated wheel as claimed in claim 1, wherein the encapsulating layer (3) is prepared by the following steps:
preparing raw materials, wherein the raw materials comprise the following raw materials in parts by weight: the SEBS content is 100 parts; 15-25 parts of white mineral oil; 15-20 parts of polybutylene succinate; 15-20 parts of polyhydroxyalkanoate; 10-20 parts of decabromodiphenylethane; 5-10 parts of antimony trioxide; 20-30 parts of ethylene propylene diene monomer; 0.5-1 part of flame retardant; 1-5 parts of activated carbon; 1-3 parts of maleic anhydride grafted polypropylene;
mixing raw materials, namely putting SEBS and white mineral oil into a stirrer, and stirring for 5 minutes; then pouring the polybutylene succinate, the polyhydroxyalkanoate, the decabromodiphenylethane, the antimony trioxide, the ethylene propylene diene monomer rubber, the flame retardant, the active carbon and the maleic anhydride grafted polypropylene into a stirrer together, and stirring for 5-8 minutes to fully mix;
and (3) extruding and granulating, namely putting the mixed material into a double-screw granulator, controlling the temperature at 150-230 ℃, and extruding and granulating.
5. The process of claim 4, wherein the flame retardant is at least one of magnesium hydroxide and aluminum hydroxide.
6. The production process of the TPE encapsulated wheel as claimed in claim 1, wherein the hub (1) is connected with a plurality of connecting pieces (8), the connecting pieces (8) are uniformly distributed on the surface of the hub (1), one end of each connecting piece (8) is detachably connected with the hub (1), and the other end of each connecting piece (8) is detachably connected with the wheel disc (2).
7. The production process of the TPE encapsulated wheel as claimed in claim 6, wherein the connecting piece (8) is rectangular, the connecting piece (8) is connected with a connecting column (9), the connecting column (9) is connected with a fixing bolt (10), and the fixing bolt (10) penetrates through the connecting piece (8) and the connecting column (9) and then is in threaded connection with the wheel hub (1) and the wheel disc (2).
8. The production process of the TPE encapsulated wheel as claimed in claim 7, wherein the connecting columns (9) are distributed at two ends of the connecting piece (8), one end of the connecting column (9) is fixedly connected with the connecting piece (8), and the other end of the connecting column (9) is attached to the wheel disc (2).
9. The production process of the TPE encapsulated wheel as claimed in claim 8, wherein a fixing ring (11) is connected to one side surface of the connecting piece (8) away from the hub (1), the fixing ring (11) is circular, the fixing ring (11) and the hub (1) are concentric, and the fixing ring (11) and the wheel disc (2) are detachably connected.
10. The production process of the TPE encapsulated wheel as claimed in claim 1, wherein the joint of the wheel disc (2) and the encapsulating layer (3) is coated with an adhesive after the injection molding.
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| CN2632052Y (en) * | 2003-07-04 | 2004-08-11 | 华南理工大学 | Roller wheel for automatic moving staircase |
| JP2006137174A (en) * | 2004-11-12 | 2006-06-01 | Hannspree Inc | Over mold product overall coated and its molding method |
| CN107000265A (en) * | 2014-11-26 | 2017-08-01 | 佳能株式会社 | Method, roller member mould, roll shaft and roller member for manufacturing roller member |
| CN206159807U (en) * | 2016-07-08 | 2017-05-10 | 嘉瑞科技（惠州）有限公司 | Structural design and injection moulding's complex body |
| CN108790014A (en) * | 2017-05-05 | 2018-11-13 | 深圳市裕展精密科技有限公司 | The complex and preparation method thereof of Al-alloy parts and plastic part |
| CN107263797A (en) * | 2017-06-19 | 2017-10-20 | 杭州台创实业有限公司 | A kind of metal wheel hub Shooting Technique |
| CN207683645U (en) * | 2017-11-28 | 2018-08-03 | 江苏铁科新材料股份有限公司 | The compound carrier wheel of endless-track vehicle |
| CN209687918U (en) * | 2019-01-22 | 2019-11-26 | 依合斯工程塑胶（上海）有限公司 | A kind of polyurethane roller for drilling platform |
| KR20200003746A (en) * | 2019-08-09 | 2020-01-10 | 한국후꼬꾸 주식회사 | Damper pulley |
| CN214649003U (en) * | 2021-05-19 | 2021-11-09 | 浙江鸿鹄翼航空科技有限公司 | Small airplane wheel |
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