A process experimental system for studying the tribological properties of graphite on phenolic resin

Abstract

The present invention discloses a process experiment system for studying the friction performance of graphite to phenolic resin, including a flange, the axis of which is arranged horizontally, the flange has a rotational power around its own axis, the flange is coaxially equipped with an annular test piece, the annular test piece is made of phenolic resin; a chip removal groove is arranged in the radial direction of the annular test piece; an output rod, a vertical output rod is arranged above the annular test piece, the bottom of the output rod contacts the outer circumferential surface of the annular test piece through a ball, an axial hole for accommodating graphite powder is provided in the output rod, the graphite powder adheres to the surface of the ball from the axial hole, and rubs against the rotating annular test piece; a radial blind hole is connected between the outer wall of the output rod and the top of the axial hole, the output rod passes through a feeding table with a fixed spatial position, and the upper surface of the feeding table has a concave funnel mouth. The invention can be used to systematically and accurately detect the friction relationship between phenolic resin and graphite, and is suitable for a variety of process experiment schemes.

Description

Technical Field

[0001] The invention relates to the production field of phenolic resin, and in particular to a process experimental system for studying the friction performance of graphite on phenolic resin. Background Art

[0002] One of the main uses of phenolic resin is the compression molding powder for producing molded products. The finished products processed with phenolic resin as raw material generally have good surface smoothness. Graphite powder is sometimes used for lubrication during the operation of molded products. The friction relationship between phenolic resin and graphite powder is also an important subdivision in this technical field, because it involves the friction effect of the finished product in the later stage.

[0003] Phenolic resin has many fine ratios, while graphite powder is mainly different in particle size. These two variables will affect the results of process experiments. However, there is a lack of corresponding experimental equipment to accurately verify the friction performance of phenolic resin and graphite powder during the processing stage. Summary of the invention

[0004] The problem to be solved by the present invention is to provide a process experiment system for studying the friction performance of graphite to phenolic resin, which can systematically and accurately detect the friction relationship between phenolic resin and graphite, is applicable to a variety of process experiment schemes, and has smooth graphite powder feeding.

[0005] To solve the above problems, the present invention provides a process experimental system for studying the friction performance of graphite on phenolic resin. To achieve the above purpose, the technical solution adopted by the present invention to solve the technical problem is:

[0006] A process experiment system for studying the friction performance of graphite to phenolic resin comprises: a flange, the axis of which is arranged horizontally, the flange has a rotational force around its axis, the flange is coaxially equipped with an annular test piece, the annular test piece is made of phenolic resin; a chip removal groove is arranged in the radial direction of the annular test piece; an output rod, a vertical output rod is arranged above the annular test piece, the bottom of the output rod contacts the outer circumference of the annular test piece through a ball, an axial hole for accommodating graphite powder is arranged in the output rod, the graphite powder adheres to the surface of the ball from the axial hole, and rubs against the rotating annular test piece; a radial blind hole is connected between the outer wall of the output rod and the top of the axial hole, the output rod passes through a feeding table with a fixed spatial position, and the upper surface of the feeding table is provided with a concave funnel mouth.

[0007] The beneficial effects of adopting the above technical solution are: the technical solution provides an experimental device that can systematically and accurately detect the friction relationship between phenolic resin and graphite. The lubrication effect of graphite powders of different coarseness and fineness can be studied, and the friction effect of phenolic resins with different proportions and the same graphite powder can also be studied. There are many overall experimental schemes.

[0008] The phenolic resin to be tested is processed into an annular test piece. The annular test piece has a uniform and simple shape and is suitable for processing as an experimental piece. After the annular test piece is installed on the equipment, it can rotate on its own. The graphite powder continues to adhere to the surface of the annular test piece through the output rod and the ball to conduct a friction test. The change in friction force can be sensed by installing a force sensor on the flange, or the flange can be rotated to the rated speed and then the power is cut off. The friction data can be measured by measuring the rotation distance of the annular test piece and the flange after losing power.

[0009] The feeding table can not only serve as a vertical limit guide for the output rod, but also facilitate the feeding of graphite powder, so that graphite powder can be continuously discharged at the output end.

[0010] As a further improvement of the present invention, the flange is assembled with a chassis through a rotating shaft, and a rotating motor driving the rotating shaft is arranged inside the chassis; the side elevation of the chassis has a recessed hole, and the rotating shaft is assembled with the bottom of the recessed hole; the chip grooves are located below and on both sides of the annular test piece.

[0011] The beneficial effects of adopting the above technical solution are: the concave holes and chip grooves are convenient for collecting the thrown-out graphite powder and the phenolic resin that is worn and fallen off, the chip grooves cover a wide range of sizes, the collection effect is good, and it is convenient to control the environment around the experimental equipment.

[0012] As a further improvement of the present invention, a suspended plate is fixed on the top of the chassis through a number of columns, a vertical cylinder is fixed on the suspended plate, and the vertical cylinder drives the output rod to reciprocate vertically; the feeding table has a through hole for the output rod to pass through, and the bottom of the funnel mouth intersects with the top of the through hole.

[0013] The beneficial effect of adopting the above technical solution is that the vertical cylinder can apply vertical pressure, which increases an adjustment parameter of the experimental equipment.

[0014] As a further improvement of the present invention, the projection profile of the radial blind hole along its own depth direction is a waist-shaped hole. When the ball contacts the annular test piece, the radial blind hole is completely buried in the through hole.

[0015] The beneficial effect of adopting the above technical solution is: a large amount of graphite powder is introduced into the funnel mouth, and the graphite powder is extruded and fed by vertically lifting the output rod to ensure continuous feeding of the graphite powder.

[0016] As a further improvement of the present invention, the outer wall of the flange has a circumferential side surface and an annular end surface which are perpendicular to each other, the circumferential side surface contacts the inner ring of the annular test piece, and the annular end surface contacts one axial end of the annular test piece.

[0017] The beneficial effect of adopting the above technical solution is that the flange and the annular test piece have sufficient contact surface to ensure that the annular test piece and the flange are fixed together.

[0018] As a further improvement of the present invention, a plurality of arc holes are provided in an annular array on the annular end face, the width of the arc holes along the radial direction of the flange is equal, and the center of the circle corresponding to the trajectory of the arc holes themselves is located on the axis of the flange itself; the annular array of the annular test piece has through holes, and each through hole is assembled with an arc hole by bolts.

[0019] The beneficial effect of adopting the above technical solution is that the arc hole reduces the installation accuracy requirement.

[0020] As a further improvement of the present invention, a touch screen display is also provided on the top of the chassis.

[0021] As a further improvement of the present invention, the touch screen display independently controls the power on and off of the vertical cylinder and the rotary motor, and the touch screen display also has a timing function.

[0022] The beneficial effects of adopting the above technical solution are: the touch screen display can input and output data, and the timing function is to record the time from the flange losing power to stopping rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 is a front view of an embodiment of the present invention;

[0025] Figure 2 is an AA cross-sectional view of an embodiment of the present invention;

[0026] Figure 3 is a perspective view of an embodiment of the present invention;

[0027] Figure 4 It is a partial enlarged view of point B of an embodiment of the present invention;

[0028] Figure 5 It is an application schematic diagram of an implementation mode of the present invention.

[0029] 1-chassis; 2-chip groove; 3-recessed hole; 4-touch screen display; 5-suspended plate; 6-column; 7-vertical cylinder; 8-output rod; 9-feeding table; 10-funnel mouth; 11-through hole; 12-radial blind hole; 13-axial hole; 14-ball; 15-rotating shaft; 16-flange; 17-arc hole; 18-circumferential side; 19-annular end face; 20-annular test piece; 21-through hole. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with specific embodiments:

[0031] The preparation process of phenolic resin used in the experimental process is roughly as follows:

[0032] Formaldehyde / phenol = (1.15-8.25) / 1;

[0033] Catalyst: ammonia;

[0034] Process:

[0035] Add phenol and aldehyde into the reaction kettle in sequence according to the formula;

[0036] Reflux, stir, and add aqueous ammonia;

[0037] Heat to about 70°C and stop, while the reaction releases heat, causing the temperature to reach 80°C to 100°C;

[0038] The reaction time is 40 to 50 minutes;

[0039] The vacuum dehydration time is 3 to 5 hours;

[0040] Take samples and measure the gelation time (160℃±2℃, 1g sample);

[0041] Cool down and stop pumping;

[0042] Add alcohol to the reactor;

[0043] The stirring time is 1h;

[0044] Take samples to measure solid content;

[0045] Cool to below 50°C and transfer to a storage tank.

[0046] The preparation process of thermoplastic phenolic resin is roughly as follows:

[0047] Add phenol and formalin into the reaction kettle in sequence according to the formula;

[0048] Add the catalyst hydrochloric acid in 2 to 3 portions;

[0049] The boiling reaction is carried out at 80°C to 100°C;

[0050] The reaction time is 60 to 90 minutes;

[0051] The separated products were vacuum dried.

[0052] In order to achieve the purpose of the present invention, a process experiment system for studying the friction performance of graphite to phenolic resin includes: a flange 16, whose axis is arranged horizontally, the flange 16 has a rotational power around its own axis, the flange 16 is coaxially equipped with an annular test piece 20, and the annular test piece 20 is made of phenolic resin; a chip groove 2 is arranged in the radial direction of the annular test piece 20; an output rod 8, a vertical output rod 8 is provided above the annular test piece 20, the bottom of the output rod 8 contacts the outer circumferential surface of the annular test piece 20 through a ball 14, the output rod 8 is provided with an axial hole 13 for accommodating graphite powder, the graphite powder adheres to the surface of the ball 14 from the axial hole 13, and rubs against the rotating annular test piece 20; a radial blind hole 12 is connected between the outer wall of the output rod 8 and the top of the axial hole 13, the output rod 8 passes through a feeding table 9 with a fixed spatial position, and the upper surface of the feeding table 9 is provided with a recessed funnel mouth 10.

[0053] The beneficial effect of adopting the above technical scheme is: this technical scheme provides an experimental device that can systematically and accurately detect the friction relationship between phenolic resin and graphite. The lubrication effect of graphite powder of different coarseness and fineness can be studied, and the friction effect of phenolic resin with different ratios and the same graphite powder can also be studied. There are many overall experimental schemes. The phenolic resin to be tested is processed into an annular experimental piece. The annular experimental piece has a uniform and simple shape and is suitable for processing as an experimental piece. After the annular experimental piece is installed with the equipment, it can rotate by itself, and the graphite powder continues to adhere to the surface of the annular experimental piece through the output rod and the ball to conduct a friction experiment. The change of friction force can be sensed by installing a force sensor on the flange, or the flange can be rotated to the rated speed and then the power is cut off, and the friction data is measured by measuring the rotation distance of the annular experimental piece and the flange after losing power. The feeding table can play a vertical limit guide for the output rod, and secondly, it can facilitate the feeding of graphite powder, and the graphite powder can be continuously discharged at the output end.

[0054] In other embodiments of the present invention, the flange 16 is assembled with the chassis 1 through the rotating shaft 15, and a rotating motor for driving the rotating shaft 15 is provided inside the chassis 1; the side elevation of the chassis 1 has a recessed hole 3, and the rotating shaft 15 is assembled with the bottom of the recessed hole 3; the chip grooves 2 are located below and on both sides of the annular test piece 20.

[0055] The beneficial effects of adopting the above technical solution are: the concave holes and chip grooves are convenient for collecting the thrown-out graphite powder and the phenolic resin that is worn and fallen off, the chip grooves cover a wide range of sizes, the collection effect is good, and it is convenient to control the environment around the experimental equipment.

[0056] In some other embodiments of the present invention, a suspended plate 5 is fixed to the top of the chassis 1 through a plurality of columns 6, a vertical cylinder 7 is fixed on the suspended plate 5, and the vertical cylinder 7 drives the output rod 8 to reciprocate vertically; the feeding table 9 has a through hole 11 for the output rod 8 to pass through, and the bottom of the funnel mouth 10 intersects with the top of the through hole 11.

[0057] The beneficial effect of adopting the above technical solution is that the vertical cylinder can apply vertical pressure, which increases an adjustment parameter of the experimental equipment.

[0058] In some other embodiments of the present invention, the projection profile of the radial blind hole 12 along its own depth direction is a waist-shaped hole. When the ball 14 contacts the annular test piece 20 , the radial blind hole 12 is completely buried in the through hole 11 .

[0059] The beneficial effect of adopting the above technical solution is: a large amount of graphite powder is introduced into the funnel mouth, and the graphite powder is extruded and fed by vertically lifting the output rod to ensure continuous feeding of the graphite powder.

[0060] In other embodiments of the present invention, the outer wall of the flange 16 has a circumferential side surface 18 and an annular end surface 19 that are perpendicular to each other. The circumferential side surface 18 contacts the inner ring of the annular test piece 20, and the annular end surface 19 contacts one axial end of the annular test piece 20.

[0061] The beneficial effect of adopting the above technical solution is that the flange and the annular test piece have sufficient contact surface to ensure that the annular test piece and the flange are fixed together.

[0062] In other embodiments of the present invention, Figure 4 As shown, there are a number of arc holes 17 in an annular array on the annular end face 19, the width of the arc holes 17 along the radial direction of the flange 16 is equal, and the center of the circle corresponding to the trajectory of the arc holes 17 itself is located on the axis of the flange 16 itself; the annular test piece 20 has a through hole 21 in an annular array, and each through hole 21 is assembled with an arc hole 17 by bolts.

[0063] The beneficial effect of adopting the above technical solution is that the arc hole reduces the installation accuracy requirement.

[0064] In some other embodiments of the present invention, a touch screen display 4 is also provided on the top of the chassis 1. The touch screen display 4 independently controls the power on and off of the vertical cylinder 7 and the rotary motor, and the touch screen display 4 also has a timing function.

[0065] The beneficial effects of adopting the above technical solution are: the touch screen display can input and output data, and the timing function is to record the time from the flange losing power to stopping rotation.

[0066] Figure 5 compared to Figure 3 , Figure 5 The annular test piece 20 is shown in FIG. 1 . With the annular test piece 20 , the friction test can be started.

[0067] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A process experimental system for studying the friction performance of graphite to phenolic resin, characterized in that: include: The flange has a horizontal axis, the flange has a rotational force around its own axis, and the flange is coaxially equipped with an annular test piece, the annular test piece is made of phenolic resin; A chip removal groove is arranged in the radial direction of the annular test piece; An output rod, wherein a vertical output rod is disposed above the annular test piece, the bottom of the output rod contacts the outer circumferential surface of the annular test piece through a ball, and an axial hole for accommodating graphite powder is provided in the output rod, the graphite powder adheres to the surface of the ball through the axial hole and rubs against the rotating annular test piece; The outer wall of the output rod is connected to the top of the axial hole with a radial blind hole, and the output rod passes through a feeding table with a fixed spatial position, and the upper surface of the feeding table is provided with a concave funnel mouth; The flange is assembled with a chassis via a rotating shaft, and a rotating motor driving the rotating shaft is arranged inside the chassis; the side elevation of the chassis has a recessed hole, and the rotating shaft is assembled with the bottom of the recessed hole; the chip removal grooves are located below and on both sides of the annular experimental piece; A suspended plate is fixed on the top of the chassis through a plurality of columns, a vertical cylinder is fixed on the suspended plate, and the vertical cylinder drives the output rod to reciprocate vertically; the feeding table is provided with a through hole for the output rod to pass through, and the bottom of the funnel mouth intersects with the top of the through hole.

2. The process experimental system for studying the friction performance of graphite to phenolic resin according to claim 1, characterized in that: The projection profile of the radial blind hole along its own depth direction is a waist-shaped hole. When the ball contacts the annular test piece, the radial blind hole is completely buried in the through hole.

3. The process experimental system for studying the friction performance of graphite to phenolic resin according to claim 1, characterized in that: The outer wall of the flange is provided with a circumferential side surface and an annular end surface which are perpendicular to each other. The circumferential side surface contacts the inner ring of the annular test piece, and the annular end surface contacts one axial end of the annular test piece.

4. The process experimental system for studying the friction performance of graphite to phenolic resin according to claim 3, characterized in that: The annular array on the annular end face has a plurality of arc holes, the width of the arc holes along the radial direction of the flange is equal, and the center of the circle corresponding to the trajectory of the arc holes is located on the axis of the flange itself; the annular array of the annular test piece has through holes, and each through hole is assembled with an arc hole by bolts.

5. The process experimental system for studying the friction performance of graphite to phenolic resin according to claim 1, characterized in that: A touch screen display is also provided on the top of the chassis.

6. The process experimental system for studying the friction performance of graphite to phenolic resin according to claim 5, characterized in that: The touch screen display independently controls the power on and off of the vertical cylinder and the rotary motor, and the touch screen display also has a timing function.

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