Outer disc material, preparation method thereof and rolling disc

Abstract

The invention provides an outer disc material, a preparation method thereof and a rolling disc, and belongs to the technical field of rolling discs. The outer disc material provided by the invention is prepared from the following raw materials in percentage by mass: 90-94% of phenolic resin, 3-5% of calcium carbonate, 0.1-1% of wood flour and 2-4% of carbon black. Phenolic resin is used as a base material, the deformability is small, and it can be guaranteed that the outer disc material has the dimensional stability; the excellent rigidity and hardness of calcium carbonate and wood powder are utilized, so that the dimensional stability of the outer disc material is improved, and the end run-out and the radial run-out of the rolling disc are ensured to meet the technical requirements; the carbon black not only has excellent rigidity, hardness and corrosion resistance, but also can ensure that the deformation of the outer disc is small when the outer disc is heated, so that the dimensional stability of the material of the outer disc is improved, and the end run-out and radial run-out of the rolling disc are ensured to meet the technical requirements.

Description

Technical Field

[0001] The invention belongs to the technical field of rolling discs, and in particular relates to an outer disc material and a preparation method thereof, and a rolling disc. Background Art

[0002] The roller is a special product for the spinning frame to drive the spindle to rotate. It is mainly composed of an outer disc, a core and a bushing. The outer disc is mainly made of carbon fiber reinforced nylon material. Its main material is nylon, which will deform during a series of processes such as injection molding, resulting in the end-to-end runout and radial runout of the roller being difficult to meet the existing technical requirements. Therefore, how to improve the outer disc material to ensure that the end-to-end runout and radial runout of the roller meet the technical requirements has become a technical problem that needs to be solved urgently in this field. Summary of the invention

[0003] The purpose of the present invention is to provide an outer disk material and a preparation method thereof, and a rolling disk. The outer disk material provided by the present invention can ensure that the end runout and radial runout of the rolling disk meet the technical requirements.

[0004] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0005] The invention provides an outer disc material, which is prepared from raw materials including the following mass percentages: 90-94% of phenolic resin, 3-5% of calcium carbonate, 0.1-1% of wood powder and 2-4% of carbon black.

[0006] Preferably, the outer disc material is prepared from raw materials comprising the following mass percentages: 91-93% phenolic resin, 4-5% calcium carbonate, 0.4-0.6% wood flour and 2.5-3.5% carbon black.

[0007] Preferably, the molecular weight of the phenolic resin is 1.2×10 5 ~1.8×10 5 .

[0008] Preferably, the particle size of the calcium carbonate is greater than 1200 nm.

[0009] Preferably, the particle size of the wood powder is 0.28-0.68 nm.

[0010] The present invention also provides a method for preparing the outer disk material described in the above technical solution, comprising the following steps:

[0011] (1) mixing phenolic resin, calcium carbonate, wood powder and carbon black to obtain a mixed material;

[0012] (2) The mixed material obtained in step (1) is subjected to compression molding and aging treatment in sequence to obtain an outer disk material.

[0013] Preferably, the mixed material in step (2) further includes drying before being pressed into shape.

[0014] Preferably, the drying temperature is 80-110° C., and the drying time is 8-16 hours.

[0015] Preferably, in step (2), the pressing temperature is 250-280° C., the pressing pressure is 50-80 kg, and the pressing time is 15-25 s.

[0016] The present invention also provides a rolling disc, comprising an outer disc, a core and a bushing;

[0017] The outer disk is prepared from the outer disk material described in the above technical solution or the outer disk material prepared by the preparation method described in the above technical solution.

[0018] The present invention provides an outer disk material, which is prepared from raw materials including the following mass percentages: 90-94% phenolic resin, 3-5% calcium carbonate, 0.1-1% wood powder and 2-4% carbon black. The present invention uses phenolic resin as a matrix material, which has small deformation and can ensure that the outer disk material has dimensional stability; the excellent rigidity and hardness of calcium carbonate and wood powder are utilized to help improve the dimensional stability of the outer disk material, thereby ensuring that the end runout and radial runout of the roller meet the technical requirements; carbon black not only has excellent rigidity, hardness and corrosion resistance, but also can ensure that the outer disk is less deformed when heated, thereby improving the dimensional stability of the outer disk material, thereby ensuring that the end runout and radial runout of the roller meet the technical requirements. Experimental results show that the end runout of the roller prepared by the outer disk material provided by the present invention is 0.12mm, 0.15mm and 0.18mm respectively, with an average value of 0.15mm; the radial runout is 0.05mm, 0.04mm and 0.03mm respectively, with an average value of 0.04mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the outer disk in Application Example 1. DETAILED DESCRIPTION

[0020] The invention provides an outer disc material, which is prepared from raw materials including the following mass percentages: 90-94% of phenolic resin, 3-5% of calcium carbonate, 0.1-1% of wood powder and 2-4% of carbon black.

[0021] The present invention has no particular limitation on the sources of the raw materials, and commercially available products known to those skilled in the art may be used.

[0022] In terms of mass percentage, the raw materials for preparing the outer disk material of the present invention include 90-94%, preferably 91-93%, and more preferably 92% of phenolic resin. In the present invention, the phenolic resin is the matrix material, has low deformability, and can ensure that the outer disk material has dimensional stability.

[0023] In the present invention, the molecular weight of the phenolic resin is preferably 1.2×10 5 ~1.8×10 5 As an embodiment, the molecular weight of the phenolic resin may be 1.5×10 5 , 1.55×10 5 or 1.6×10 5 .

[0024] In terms of mass percentage, the raw materials for preparing the outer disk material of the present invention further include 3-5%, preferably 4-5%, and more preferably 4.5% calcium carbonate. In the present invention, the calcium carbonate is a filler that can improve the mechanical properties of the outer disk material.

[0025] In the present invention, the particle size of the calcium carbonate is preferably greater than 1200 nm. As an embodiment, the particle size of the calcium carbonate may be 1300 nm, 1350 nm or 1400 nm.

[0026] In terms of mass percentage, the raw materials for preparing the outer disk material of the present invention further include 0.1-1%, preferably 0.4-0.6%, and more preferably 0.5% of wood powder. In the present invention, the wood powder can significantly reduce the cost of phenolic resin; at the same time, the wood powder can increase the overall rigidity and hardness of the outer disk material, thereby improving the dimensional stability of the outer disk material.

[0027] In the present invention, the particle size of the wood powder is preferably 0.28-0.68 nm. As an embodiment, the particle size of the wood powder can be 0.4 nm, 0.43 nm or 0.48 nm.

[0028] In terms of mass percentage, the raw materials for preparing the outer disk material of the present invention further include 2-4%, preferably 2.5-3.5%, and more preferably 3% of carbon black. In the present invention, the carbon black not only has excellent rigidity, hardness and corrosion resistance, but also can ensure that the outer disk is less deformed when heated, thereby improving the dimensional stability of the outer disk material, and further ensuring that the end runout and radial runout of the roller meet the technical requirements.

[0029] In the present invention, the particle size of the carbon black is preferably 10 to 300 nm. As an embodiment, the particle size of the carbon black may be 200 nm or 230 nm.

[0030] The present invention uses phenolic resin as a matrix material, which has low deformability and can ensure that the outer disk material has dimensional stability; the excellent rigidity and hardness of calcium carbonate and wood powder are utilized to help improve the dimensional stability of the outer disk material, thereby ensuring that the end runout and radial runout of the roller meet the technical requirements; carbon black not only has excellent rigidity, hardness and corrosion resistance, but also can ensure that the outer disk has little deformation when heated, thereby improving the dimensional stability of the outer disk material, thereby ensuring that the end runout and radial runout of the roller meet the technical requirements (end runout ≤0.2mm, radial runout ≤0.05mm).

[0031] The present invention also provides a method for preparing the outer disk material described in the above technical solution, comprising the following steps:

[0032] (1) mixing phenolic resin, calcium carbonate, wood powder and carbon black to obtain a mixed material;

[0033] (2) The mixed material obtained in step (1) is subjected to compression molding and aging treatment in sequence to obtain an outer disk material.

[0034] The invention mixes phenolic resin, calcium carbonate, wood powder and carbon black to obtain a mixed material.

[0035] The present invention has no special limitation on the operation of mixing the phenolic resin, calcium carbonate, wood powder and carbon black, and the technical scheme for preparing the mixed material well known to those skilled in the art can be adopted.

[0036] After obtaining the mixed material, the present invention sequentially performs compression molding and aging treatment on the mixed material to obtain the outer disk material.

[0037] In the present invention, the mixed material is preferably dried before being pressed and formed; the drying temperature is preferably 80 to 110° C.; the drying time is preferably 8 to 16 hours. The present invention can remove moisture from the mixed material by drying the mixed material.

[0038] As an implementation manner, the drying temperature may be 90-105° C., or 95-100° C.; the drying time may be 9-15 h, or 10 h, 11 h, 12 h, 13 h, or 14 h.

[0039] In the present invention, the compression molding is preferably performed in a bakelite machine. The present invention has no particular limitation on the model of the bakelite machine, and any equipment well known to those skilled in the art can be used.

[0040] In the present invention, the bakelite machine is preferably preheated before use; the preheating temperature is preferably 85-175° C. The present invention has no particular limitation on the preheating time, and preheating to the above temperature is sufficient.

[0041] As an embodiment, the preheating temperature may be 90-170°C, or may be 100°C, 110°C, 120°C, 130°C, 140°C, 150°C or 160°C.

[0042] In the present invention, the pressing temperature is preferably 250 to 280° C.; the pressing pressure is preferably 50 to 80 kg; and the pressing time is preferably 15 to 25 s.

[0043] As an embodiment, the pressing molding temperature can be 255-275°C, or 260-270°C; the pressing molding pressure can be 60-75kg, or 70kg; the pressing molding time can be 16s, 17s, 18s, 19s, 20s, 21s, 22s, 23s or 24s.

[0044] After the press molding is completed, the present invention preferably sequentially performs heat preservation, deburring and cooling on the press molded product.

[0045] In the present invention, the temperature of the heat preservation is preferably the same as the temperature of the aforementioned pressing and molding, which will not be repeated here; the heat preservation time is preferably 20 to 30 seconds. The present invention can reduce the deformation of the outer disk material by heat preservation for 20 to 30 seconds after pressing and molding.

[0046] As an implementation mode, the insulation time may be 22 to 28 seconds, or 24 to 26 seconds.

[0047] The present invention has no special limitation on the deburring operation, and operations well known to those skilled in the art may be used.

[0048] In the present invention, the cooling is preferably carried out by water cooling at room temperature; the cooling time is preferably 40 to 60 seconds, more preferably 50 to 55 seconds.

[0049] In the present invention, the aging treatment is preferably carried out outdoors. The present invention has no particular limitation on the outdoor temperature, as long as it is outdoors.

[0050] In the present invention, the aging treatment time is preferably more than one week, more preferably 8 days. The aging treatment of the present invention can keep the quality of the outer disk material stable.

[0051] The present invention adopts compression molding, which can reduce the deformation of the outer disk material and keep the quality stable.

[0052] The present invention also provides a rolling disc, comprising an outer disc, a core and a bushing;

[0053] The outer disk is prepared from the outer disk material described in the above technical solution or the outer disk material prepared by the preparation method described in the above technical solution.

[0054] In the present invention, the outer disk material is preferably prepared into the outer disk by machining.

[0055] The present invention has no special limitation on the machining operation, and the operation can be performed according to the actual size of the outer disc.

[0056] In the present invention, the molding surface of the outer plate is preferably an inclined surface. The present invention processes the molding surface into an inclined surface, which can ensure that cotton wool does not hang on the rolling plate.

[0057] In the present invention, the angle of the inclined surface is preferably 45-50°, more preferably 47°.

[0058] In the present invention, the material of the core is preferably aluminum alloy.

[0059] The present invention has no special limitation on the material of the bushing, and the bushing can be selected according to the actual needs.

[0060] The technical solutions in the present invention will be described clearly and completely below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0061] Example 1

[0062] An outer disk material is prepared from the following raw materials in percentage by mass: 92% phenolic resin, 4.5% calcium carbonate, 0.5% wood powder and 3% carbon black;

[0063] The molecular weight of the phenolic resin is 1.5×10 5 ;

[0064] The particle size of the calcium carbonate is 1300 nm;

[0065] The particle size of the wood powder is 0.48 nm;

[0066] The particle size of the carbon black is 200 nm;

[0067] The preparation method of the outer disk material comprises the following steps:

[0068] (1) mixing phenolic resin, calcium carbonate, wood powder and carbon black to obtain a mixed material;

[0069] (2) The mixed material obtained in step (1) is dried at 100° C. for 12 h, and then pressed in a bakelite machine preheated to 150° C. for 20 s, and then kept warm for 30 s, followed by deburring, and then cooled with normal temperature water for 60 s, and then placed outdoors for aging treatment for 8 days to obtain an outer disk material; wherein the pressing temperature is 260° C. and the pressing pressure is 80 kg.

[0070] Application Example 1

[0071] The outer disk material prepared in Example 1 is processed into an outer circle and a hole on a CNC lathe to obtain an outer disk with an inclined surface, and then a core and a bushing made of YL113 aluminum alloy are used to obtain a roller; wherein the angle of the inclined surface is 47°.

[0072] The roller prepared according to Example 1 was tested, and the end runout (end-to-end runout) was 0.12mm, 0.15mm and 0.18mm, respectively, with an average value of 0.15mm; the diameter runout (radial runout) was 0.05mm, 0.04mm and 0.03mm, respectively, with an average value of 0.04mm.

[0073] The structural diagram of the outer disk in Application Example 1 is as follows Figure 1 shown.

[0074] Example 2

[0075] An outer disk material is prepared from the following raw materials in percentage by mass: 92% phenolic resin, 4.5% calcium carbonate, 0.5% wood powder and 3% carbon black;

[0076] The molecular weight of the phenolic resin is 1.6×10 5 ;

[0077] The particle size of the calcium carbonate is 1400 nm;

[0078] The particle size of the wood powder is 0.4 nm;

[0079] The particle size of the carbon black is 200 nm;

[0080] The preparation method of the outer disk material comprises the following steps:

[0081] (1) mixing phenolic resin, calcium carbonate, wood powder and carbon black to obtain a mixed material;

[0082] (2) The mixed material obtained in step (1) is dried at 110° C. for 12 h, and then pressed in a bakelite machine preheated to 140° C. for 20 s, and then kept warm for 30 s, followed by deburring, and then cooled with normal temperature water for 50 s, and then placed outdoors for aging treatment for 8 days to obtain an outer disk material; wherein the pressing temperature is 250° C. and the pressing pressure is 75 kg.

[0083] Application Example 2

[0084] The outer disk material prepared in Example 2 is processed with an outer circle and a hole on a CNC lathe to obtain an outer disk with an inclined surface, and then a core and a bushing made of YL113 aluminum alloy are used to obtain a roller; wherein the angle of the inclined surface is 47°.

[0085] The roller prepared in Example 2 was tested, and the end runout (end-to-end runout) was 0.10mm, 0.18mm and 0.15mm, respectively, with an average value of 0.143mm; the diameter runout (radial runout) was 0.05mm, 0.05mm and 0.04mm, respectively, with an average value of 0.047mm.

[0086] Example 3

[0087] An outer disk material is prepared from the following raw materials in percentage by mass: 92% phenolic resin, 4.5% calcium carbonate, 0.5% wood powder and 3% carbon black;

[0088] The molecular weight of the phenolic resin is 1.55×10 5 ;

[0089] The particle size of the calcium carbonate is 1350 nm;

[0090] The particle size of the wood powder is 0.43 nm;

[0091] The particle size of the carbon black is 230 nm;

[0092] The preparation method of the outer disk material comprises the following steps:

[0093] (1) mixing phenolic resin, calcium carbonate, wood powder and carbon black to obtain a mixed material;

[0094] (2) The mixed material obtained in step (1) is dried at 105° C. for 10 h, and then pressed in a bakelite machine preheated to 160° C. for 20 s, and then kept warm for 30 s, followed by deburring, and then cooled with normal temperature water for 55 s, and then placed outdoors for aging treatment for eight days to obtain an outer disk material; wherein the pressing temperature is 255° C. and the pressing pressure is 70 kg.

[0095] Application Example 3

[0096] The outer disk material prepared in Example 3 is processed with an outer circle and a hole on a CNC lathe to obtain an outer disk with an inclined surface, and then a core and a bushing made of YL113 aluminum alloy are used to obtain a roller; wherein the angle of the inclined surface is 47°.

[0097] The roller prepared in Example 3 was tested, and the end runout (end-to-end runout) was 0.15mm, 0.16mm and 0.18mm, respectively, with an average value of 0.163mm; the diameter runout (radial runout) was 0.05mm, 0.04mm and 0.04mm, respectively, with an average value of 0.043mm.

[0098] Example 4

[0099] An outer disc material is prepared from the following raw materials in percentage by mass: 90% phenolic resin, 5% calcium carbonate, 1% wood powder and 4% carbon black;

[0100] The molecular weight of the phenolic resin is 1.55×10 5 ;

[0101] The particle size of the calcium carbonate is 1350 nm;

[0102] The particle size of the wood powder is 0.43 nm;

[0103] The particle size of the carbon black is 230 nm;

[0104] The preparation method of the outer disk material comprises the following steps:

[0105] (1) mixing phenolic resin, calcium carbonate, wood powder and carbon black to obtain a mixed material;

[0106] (2) The mixed material obtained in step (1) is dried at 105° C. for 10 h, and then pressed in a bakelite machine preheated to 160° C. for 25 s, and then kept warm for 30 s, followed by deburring, and then cooled with normal temperature water for 55 s, and then placed outdoors for aging treatment for eight days to obtain an outer disk material; wherein the pressing temperature is 280° C. and the pressing pressure is 50 kg.

[0107] Application Example 4

[0108] The outer disk material prepared in Example 4 is processed with an outer circle and a hole on a CNC lathe to obtain an outer disk with an inclined surface, and then a core and a bushing made of YL113 aluminum alloy are used to obtain a roller; wherein the angle of the inclined surface is 47°.

[0109] The roller prepared in Example 4 was tested, and the end runouts were 0.15mm, 0.18mm and 0.16mm, respectively, with an average value of 0.163mm; the diameter runouts were 0.05mm, 0.03mm and 0.05mm, respectively, with an average value of 0.043mm.

[0110] Example 5

[0111] An outer disk material is prepared from the following raw materials in percentage by mass: 94% phenolic resin, 3% calcium carbonate, 0.1% wood powder and 2.9% carbon black;

[0112] The molecular weight of the phenolic resin is 1.55×10 5 ;

[0113] The particle size of the calcium carbonate is 1350 nm;

[0114] The particle size of the wood powder is 0.43 nm;

[0115] The particle size of the carbon black is 230 nm;

[0116] The preparation method of the outer disk material comprises the following steps:

[0117] (1) mixing phenolic resin, calcium carbonate, wood powder and carbon black to obtain a mixed material;

[0118] (2) The mixed material obtained in step (1) is dried at 105° C. for 10 h, and then pressed in a bakelite machine preheated to 160° C. for 15 s, and then kept warm for 30 s, followed by deburring, and then cooled with normal temperature water for 55 s, and then placed outdoors for aging treatment for eight days to obtain an outer disk material; wherein the pressing temperature is 275° C. and the pressing pressure is 75 kg.

[0119] Application Example 5

[0120] The outer disk material prepared in Example 5 is processed with an outer circle and a hole on a CNC lathe to obtain an outer disk with an inclined surface, and then a core and a bushing made of YL113 aluminum alloy are used to obtain a roller; wherein the angle of the inclined surface is 47°.

[0121] The roller prepared in Example 5 was tested, and the end runouts were 0.10mm, 0.12mm and 0.16mm, respectively, with an average value of 0.126mm; the diameter runouts were 0.02mm, 0.03mm and 0.03mm, respectively, with an average value of 0.027mm.

[0122] Comparative Example 1

[0123] An outer disk material is prepared from the following raw materials in percentage by mass: 92% phenolic resin, 4.5% calcium carbonate and 3.5% wood powder, and other conditions are the same as those in Example 1.

[0124] Comparative Example 2

[0125] An outer disk material is prepared from the following raw materials in percentage by mass: 92% phenolic resin, 4.5% calcium carbonate and 3.5% carbon black, and other conditions are the same as those in Example 1.

[0126] Comparative Example 3

[0127] An outer disk material is prepared from the following raw materials in percentage by mass: 92% phenolic resin, 5% wood powder and 3% carbon black, and other conditions are the same as those in Example 1.

[0128] Comparative Example 4

[0129] An outer disk material is prepared from the following raw materials in percentage by mass: 92% phenolic resin, 5% calcium carbonate and 3% carbon black, and other conditions are the same as those in Example 1.

[0130] Comparative Application Examples 1 to 4

[0131] The outer disk materials prepared in Examples 1 to 4 were processed for outer circles and holes on a CNC lathe to obtain an outer disk with an inclined surface, and then a core and a bushing made of YL113 aluminum alloy were used to obtain a rolling disk; wherein the angle of the inclined surface was 47°.

[0132] The rollers prepared in comparative application examples 1 to 4 were tested, and the end runout and radial runout are shown in Table 1.

[0133] Table 1 End runout and radial runout of the rollers prepared in Application Example 1 and Comparative Application Examples 1 to 4

[0134]

[0135] It can be seen from Table 1 that the end runout and radial runout of the roller prepared by the outer disc material provided by the present invention are both low, which can ensure that the end runout and radial runout of the roller meet the technical requirements.

[0136] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An outer disk material is prepared from raw materials including the following mass percentages: 90-94% phenolic resin, 3-5% calcium carbonate, 0.1-1% wood powder and 2-4% carbon black.

2. The outer disk material according to claim 1, characterized in that: The outer disc material is prepared from raw materials including the following mass percentages: 91-93% of phenolic resin, 4-5% of calcium carbonate, 0.4-0.6% of wood powder and 2.5-3.5% of carbon black.

3. The outer disk material according to claim 1 or 2, characterized in that: The molecular weight of the phenolic resin is 1.2×10 5 ~1.8×10 5 .

4. The outer disk material according to claim 1 or 2, characterized in that: The particle size of the calcium carbonate is greater than 1200 nm.

5. The outer disk material according to claim 1 or 2, characterized in that: The particle size of the wood powder is 0.28-0.68 nm.

6. The method for preparing the outer disk material according to any one of claims 1 to 5, comprising the following steps: (1) mixing phenolic resin, calcium carbonate, wood powder and carbon black to obtain a mixed material; (2) The mixed material obtained in step (1) is subjected to compression molding and aging treatment in sequence to obtain an outer disk material.

7. The preparation method according to claim 6, characterized in that: The mixed material in step (2) also includes drying before being pressed into shape.

8. The preparation method according to claim 7, characterized in that: The drying temperature is 80-110° C., and the drying time is 8-16 hours.

9. The preparation method according to claim 6, characterized in that: The pressing temperature in step (2) is 250-280° C., the pressing pressure is 50-80 kg, and the pressing time is 15-25 s.

10. A rolling plate, comprising an outer plate, a core and a bushing; The outer disk is prepared from the outer disk material described in any one of claims 1 to 5 or the outer disk material prepared by the preparation method described in any one of claims 6 to 9.

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