CN102963000B - Method for binding ultra-high molecular weight polyethylene film sheet and metal board - Google Patents

Abstract

The present invention provides a method for bonding an ultra-high molecular weight polyethylene film to a metal plate, comprising the following steps: ① take the ultra-high molecular weight polyethylene film coated with a copolymer primer and cut it into blocks for later use; ② Grind the surface of the board or box made of metal materials into a rough surface; ③Heat the rough surface in step ② to 190°C-250°C; ④Put the block UHMWPE film in step ① Attach the heated rough surface in step ③ one by one, and pressurize the block UHMWPE film to make it closely adhere to the heated metal rough surface. The pressing time is when the metal rough surface cools down to 50°C -60℃. The invention can tightly bond the ultra-high molecular weight polyethylene membrane to metal materials, thereby improving the service life of the product after the ultra-high molecular weight polyethylene membrane is bonded to the metal, and expanding the application range of the ultra-high molecular weight polyethylene membrane.

Description

A bonding method of ultra-high molecular weight polyethylene film and metal plate

technical field

The invention relates to a bonding method, which is a bonding method of an ultra-high molecular weight polyethylene film and a metal plate.

Background technique

Because the wear resistance of ultra-high molecular weight polyethylene diaphragm is 4-7 times that of steel, the impact absorption capacity is also much higher than that of steel, and it has extremely high corrosion resistance, and the surface smoothness is basically equivalent to that of ice. Therefore, It can be used to stick on the surface of various fields and products such as mine trucks, coal bunkers, ship shells below the waterline, and submarines, and its application effect is extremely significant. But, because this ultra-high molecular weight polyethylene film is made of ultra-high molecular weight polyethylene material, it is extremely difficult to bond with metal materials. At present, how to solve the problem of bonding ultra-high molecular weight polyethylene products and metal materials is a worldwide problem. Technicians from all over the world are working hard to study, but it has not been solved so far. The method of stud and nut connection is still used, and the shortcomings of this method Because of: high labor intensity, low work efficiency, poor connection effect, short service life, and many products cannot be used, resulting in relatively limited application of ultra-high molecular weight polyethylene membranes.

Contents of the invention

The purpose of the present invention is to provide a bonding method of ultra-high molecular weight polyethylene film and metal plate, so that it can tightly bond ultra-high molecular weight polyethylene film and metal material, thereby improving the quality of ultra-high molecular weight polyethylene film. The service life of the product after the film is bonded to the metal expands the application range of the ultra-high molecular weight polyethylene film.

In order to achieve the above object, the present invention is achieved through the following technical solutions: a bonding method of ultra-high molecular weight polyethylene film and metal plate, comprising the following steps:

①Take the ultra-high molecular weight polyethylene film covered with copolymer primer and cut it into blocks for later use;

② Grinding the surface of the board or box made of metal materials into a rough surface;

③Heating the rough surface in step ② to 190°C-250°C;

④ Attach the block ultra-high molecular weight polyethylene film in step ① to the heated rough surface in step ③ one by one, pressurize the block ultra-high molecular weight polyethylene film to make it closely adhere to the heated metal rough surface Together, the pressing time is until the rough surface of the metal cools down to 50°C-60°C. The heating equipment in step ③ is an ultra-high frequency induction machine, the frequency of which is about 200KHz, and the power is 20-30KW. The UHF induction machine adopts a movable heating head with the heating head separated from the host, and the heating head is connected to the host with a flexible coaxial cable.

Described a kind of bonding method of ultra-high molecular weight polyethylene film and metal plate, step 1. described in the coating method of the ultra-high molecular weight polyethylene film that has been covered with copolymer primer is:

①Take the copolymer primer for use;

②The surface of the ultra-high molecular weight polyethylene diaphragm is heated and activated with a flame gun, that is, the nozzle of the flame gun is aimed at the surface of the ultra-high molecular weight polyethylene diaphragm to spray flames, and the ultra-high molecular weight polyethylene diaphragm passes through the flame during walking. ;

③Heat the spare glue in step ① to 200-260°C and apply it to the surface of the UHMWPE film;

④ Pressurize the surface of the ultra-high molecular weight polyethylene diaphragm after step ③ glue coating, and the ultra-high molecular weight polyethylene diaphragm is pressurized during walking;

⑤Calendering the ultra-high molecular weight polyethylene film that is walking after pressurization;

⑥ Put the calendered ultra-high molecular weight polyethylene film into the cooling box for cooling, and the cooling liquid is lower than 25°C;

⑦Rewind the cooled ultra-high molecular weight polyethylene film. The whole process from step ② to step ⑦ of ultra-high molecular weight polyethylene film is carried out during walking. The walking speed of ultra-high molecular weight polyethylene film is 20-30 cm/s, and the temperature of the flame sprayed by the torch is about 600 ℃ , the vertical distance between the nozzle of the torch and the surface of the UHMWPE film is 2.5-3.5 cm. In step ④, pressurize the surface of the ultra-high molecular weight polyethylene diaphragm, using a heated polytetrafluoro roll to pressurize, and the surface temperature of the roll is 160°C-175°C.

In the method for bonding an ultra-high molecular weight polyethylene film and a metal plate, the method of steps ①-⑦ is completed by a laminating machine. The adhesive extrusion tube is installed on the machine, the adhesive mold is installed at one end of the adhesive extrusion tube, the bracket is installed on one side of the adhesive extruder, the ultra-high molecular weight polyethylene film roll is installed at one end of the bracket, and the ultra-high molecular weight polyethylene film winding is installed at the other end of the bracket The motor, the first roller group, the main roller, the second roller group and the cooling box guide roller are installed on the bracket in sequence from the end of the diaphragm roll, and the ultra-high molecular weight polyethylene diaphragm on the diaphragm roll passes through the first roller group, The main roll and the guide roll of the cooling box are rolled into the winder, and a torch is installed between the first roll group and the main roll. The glue port is located between the flame gun and the main roll, and a cooling box is installed between the second roll set and the winder. The cooling box is arranged under the support, and two cooling box guide wheels are installed at the inner bottom of the cooling box, and the two cooling box guide wheels are arranged in parallel. Install the guide wheel between the cooling box and the winding machine on the support. An electric heating tube is installed inside the main roll, and the electric heating tube heats the surface of the main roll. The surface temperature of the main roll is 160°C-175°C. The surface of the main roll is coated with a polytetrafluoroethylene layer.

The method of the present invention can firmly bond the ultra-high molecular weight polyethylene film to the metal, and heat the high-strength mucous layer on the ultra-high molecular weight polyethylene film to 110-130°C to bond with the metal material. It can be made into various products, and the service life of various products such as plates or boxes after the ultra-high molecular weight polyethylene film is bonded to metal by the method of the present invention is long, which is 20-25 times longer than that of the prior art. There are multiple deficiencies such as poor bonding firmness, low work efficiency, and high labor intensity in the technology. After testing: the average peel strength of the ultra-high molecular weight polyethylene film bonded to the metal is greater than 170N/cm. The product of bonding ultra-high molecular weight polyethylene film and metal by the method of the invention can be applied to various fields such as mine cars, coal bunkers, ships and submarines. The method of the invention is easy for industrial operation.

In the method of the present invention, the high-strength mucous membrane compounded on the surface of the ultra-high molecular weight polyethylene membrane has a thickness of about 0.3-1.5 millimeters, and this layer of mucous membrane can be firmly bonded to the surface of the ultra-high molecular weight polyethylene membrane, so that The average value of its anti-peel strength reaches 170N/cm. During the compounding process of high-strength adhesive film, the ultra-high molecular weight polyethylene film does not shrink or deform, and does not damage the tensile properties of the ultra-high molecular weight polyethylene film itself. , the equipment used in the method of the present invention ensures the uniformity of the mucous membrane and higher production efficiency, so that the thickness of the mucous membrane is controllable, the temperature of the adhesive is controllable, and the surface activation temperature of the ultra-high molecular weight polyethylene film before gluing controllable.

The key of the present invention is to use the skin effect of high frequency induction to control the heating layer of the metal in the surface layer, so that the colloid on the surface of the ultra-high diaphragm can be melted rapidly, bonded with the metal and cooled rapidly, thereby overcoming the heating of the ultra-high diaphragm The key problem is that the diaphragm body is deformed for too long, and at the same time, the recombination efficiency is greatly improved and the heating power consumption is reduced.

Description of drawings

Accompanying drawing 1 is the equipment structure schematic diagram used in the method for the composite high-strength mucous membrane of ultra-high molecular weight polyethylene film of the present invention; Accompanying drawing 2 is the product structure schematic diagram of composite high-strength mucous membrane of ultra-high molecular weight polyethylene membrane. Accompanying drawing 3 is A-A sectional structure schematic diagram in accompanying drawing 2.

Detailed ways

A kind of bonding method of ultra-high molecular weight polyethylene film of the present invention and metal plate, comprises the following steps:

①Take the ultra-high molecular weight polyethylene film covered with copolymer primer and cut it into blocks for later use;

② Grinding the surface of the board or box made of metal materials into a rough surface;

③Heating the rough surface in step ② to 190°C-250°C;

④ Attach the block ultra-high molecular weight polyethylene film in step ① to the heated rough surface in step ③ one by one, pressurize the block ultra-high molecular weight polyethylene film to make it closely adhere to the heated metal rough surface Together, the pressing time is until the rough surface of the metal cools down to 50°C-60°C.

The heating equipment in step 3. of the present invention is an ultra-high frequency induction machine, the frequency of this machine is about 200KHz, and the power is 20-30KW.

The UHF induction machine adopts a movable heating head with the heating head separated from the host, and the heating head is connected to the host with a flexible coaxial cable.

The step of the present invention 1. described in has been coated with the glue method of the ultra-high molecular weight polyethylene diaphragm of copolymer base glue is:

①Take the copolymer primer for use;

②The surface of the ultra-high molecular weight polyethylene diaphragm is heated and activated with a flame gun, that is, the nozzle of the flame gun is aimed at the surface of the ultra-high molecular weight polyethylene diaphragm to spray flames, and the ultra-high molecular weight polyethylene diaphragm passes through the flame during walking. ;

③Heat the spare glue in step ① to 200-260°C and apply it to the surface of the UHMWPE film;

④ Pressurize the surface of the ultra-high molecular weight polyethylene diaphragm after step ③ glue coating, and the ultra-high molecular weight polyethylene diaphragm is pressurized during walking;

⑤Calendering the ultra-high molecular weight polyethylene film that is walking after pressurization;

⑥ Put the calendered ultra-high molecular weight polyethylene film into the cooling box for cooling, and the cooling liquid is lower than 25°C;

⑦Rewind the cooled ultra-high molecular weight polyethylene film.

The whole process of the ultra-high molecular weight polyethylene diaphragm from step ② to step ⑦ is carried out in walking, the walking speed of the ultra-high molecular weight polyethylene diaphragm is 20-30 cm/s, and the flame temperature ejected from the torch is 600 ℃-800 ℃, the vertical distance between the nozzle of the torch and the surface of the ultra-high molecular weight polyethylene film is 2.5-3.5 cm.

In step ④ of the present invention, pressurizing the surface of the ultra-high molecular weight polyethylene diaphragm is carried out by using a heated roll, and the surface temperature of the roll is 160°C-175°C.

In the method of the present invention, the method for pressurizing the block ultra-high molecular weight polyethylene diaphragm described in step ⑤ generally has the following method: when the ultra-high molecular weight polyethylene diaphragm is attached on the horizontal metal plate, press The roller pressurizes the surface of the ultra-high molecular weight polyethylene film, so that the ultra-high molecular weight polyethylene film is closely attached to the horizontal metal surface; when the ultra-high molecular weight polyethylene film is pasted on the vertical metal plate, an electromagnet can be used The pressure plate pressurizes the surface of the ultra-high molecular weight polyethylene diaphragm, so that the ultra-high molecular weight polyethylene diaphragm and the surface of the vertical metal plate are closely bonded; when the surface area to be bonded is small and tools such as instruments cannot be used, it can be Use manual methods to heat-insulate and press until the rough surface temperature of the metal cools down to 50°C-60°C.

A kind of bonding method of ultra-high molecular weight polyethylene diaphragm and metal plate of the present invention, the method of step ①-⑦ adopts laminating machine to finish, and the structure of laminating machine is: comprise adhesive extruder 2, glue machine extrudes Adhesive extruding pipe 19 is installed on the output machine 2, adhesive mold 7 is installed on one end of adhesive extruding pipe 19, bracket 20 is installed on one side of adhesive extruder 2, ultra-high molecular weight polyethylene film roll 1 is installed on one end of bracket 20, and bracket 20 is another An ultra-high molecular weight polyethylene film winder motor 16 is installed at one end, and the first roller group 4, the main roller 8, the second roller group 9 and the cooling box guide roller 11 are installed sequentially on the support 20 from the end where the film roll is installed, and the film The ultra-high molecular weight polyethylene film on the sheet roll 1 passes through the first roller group 4, the main roller 8, and the guide roller of the cooling box and is drawn into the winder, and the flame gun 6 is installed between the first roller group 4 and the main roller 8, The nozzle of the flame gun 6 is located above the upper surface of the ultra-high molecular weight polyethylene film, and the glue outlet port of the adhesive extrusion pipe 19 is located between the flame gun 6 and the main roll 8, between the second roll group 9 and the winder 15 Cooling box 10 is installed.

The cooling box 10 of the present invention is arranged under the bracket 20, and two cooling box guide wheels 11 are installed at the bottom of the cooling box 10, and the two cooling box guide wheels 11 are arranged in parallel to keep the ultra-high molecular weight polyethylene film compounded with high-strength mucous membrane The sheets enter the cooling box and are completely cooled. The cooling liquid in the cooling box 10 is tap water, which flows in a circular manner, and keeps the temperature of the cooling liquid below 25°C.

In the present invention, a guide wheel 13 is installed between the cooling box 10 and the winder 15 on the support 20, so that the ultra-high molecular weight polyethylene diaphragm enters the winder.

An electric heating tube is installed inside the main roll 8, and the electric heating tube heats the surface of the main roll 8 to keep the surface temperature of the main roll 8 at 160°C-175°C, which is convenient for maintaining the temperature of the ultra-high molecular weight polyethylene diaphragm when pressurized , to increase the bonding firmness between the mucous membrane and the ultra-high molecular weight polyethylene film.

In order to cause adhesion between the surface of the main roll 8 and the mucous membrane, a polytetrafluoroethylene layer is coated on the surface of the main roll 8 .

In the method of the present invention, the vertical height of the nozzle of the spray gun from the ultra-high molecular weight polyethylene diaphragm is 2.5-3.5 centimeters, and this distance is based on the fact that the walking speed of the ultra-high molecular weight polyethylene diaphragm is 20-30 cm/s , it is set on the basis that the temperature of the flame ejected from the torch is about 600°C. This set of parameters is a better implementation. Of course, in order to heat and activate the surface of the ultra-high molecular weight polyethylene diaphragm, this The walking speed of the ultra-high molecular weight polyethylene diaphragm described in the invention, the flame temperature ejected from the torch and the vertical height between the nozzle of the torch and the diaphragm are changed to achieve the purpose of activation treatment. The purpose of activating the surface of the ultra-high molecular weight polyethylene membrane is to break some chemical molecular bonds on the surface of the ultra-high molecular weight polyethylene membrane under the action of a high-temperature flame by flame spraying, forming small molecular products or It is oxidized into CO, _CO2, etc., which greatly increases the polarity of the material surface. At the same time, the molecular chains on the surface of the ultra-high molecular weight polyethylene film are broken to generate new free radicals and double bonds. Linkage, grafting and other reactions, and generate lateral connections between molecular chains to form a network structure, which is conducive to the penetration and combination of adhesive material molecules. In addition, the surface of the ultra-high molecular weight polyethylene film becomes uneven and the roughness increases, and the pores in it increase the surface area of the ultra-high molecular weight polyethylene film, so that there is a gap between the ultra-high molecular weight polyethylene film and the adhesive material. a firm bond. The adhesive material is the copolymer primer. This glue is prior art, and its component properties are not described in detail. After the method of the present invention is used to compound the high-strength mucous membrane on the surface of the ultra-high molecular weight polyethylene film, when in use, the surface of the mucous membrane is heated to 130° C. and then pressed together. The spray gun structure described in the present invention is prior art. The nozzle of the torch is an adjustable structure, and the size of the flame can be adjusted as required. The main roll of the invention is used to heat and press the glue coated on the ultra-high molecular weight polyethylene film.

The first roller group 4 used on the equipment of the present invention is two guide wheels up and down, and the ultra-high molecular weight polyethylene diaphragm is wound around the upper and lower two guide wheels to walk, and the first roller group 4 wraps the ultra-high molecular weight polyethylene diaphragm Calendering is convenient for the next activation treatment. The second roller group 9 is composed of 3 wires arranged up and down. The ultra-high molecular weight polyethylene film enters the upper end and the middle two guide wheels for pressing, then enters the middle and lower end two guide wheels for pressing, and then enters the cooling box 12 Internal cooling. The first roll group 4 and the second roll 9 are installed in the frame respectively, as shown in Figure 1, the roll tension adjustment handle is installed above the frame, and the first tension adjustment handle is installed on the frame upper end of the first roll group 4 as shown in Figure 1 5. The upper end of the frame of the second roller group 9 is equipped with a second elastic adjustment handle 21, and the two elastic adjustment handles have the same structure, and both are composed of a screw rod and a handle. Among the figure, 3 is a motor, 14 is an ultra-high molecular weight polyethylene diaphragm, 17 is a coolant inlet pipe, 18 is a coolant outlet pipe, 22 is a high-strength mucous membrane, and 23 is an ultra-high molecular weight polyethylene diaphragm.

Claims (8)

1. a bonding method of ultra-high molecular weight polyethylene diaphragm and metal plate, is characterized in that: comprise the steps: ①Take the ultra-high molecular weight polyethylene film covered with copolymer primer and cut it into blocks for later use; ②Grind the surface of the board or box made of metal materials into a rough surface; ③Heat the rough surface in step ② to 190°C-250°C; ④ Attach the block ultra-high molecular weight polyethylene film in step ① to the heated rough surface in step ③ one by one, pressurize the block ultra-high molecular weight polyethylene film to make it closely adhere to the heated metal rough surface Together, the pressurization time is until the rough surface of the metal cools down to 50°C-60°C; The coating method of ultra-high molecular weight polyethylene film covered with copolymer primer is: ①Take the copolymer primer for use; ②The surface of the ultra-high molecular weight polyethylene diaphragm is heated and activated with a flame gun, that is, the nozzle of the flame gun is aimed at the surface of the ultra-high molecular weight polyethylene diaphragm to spray flames, and the ultra-high molecular weight polyethylene diaphragm passes through the flame during walking. ; ③Heat the spare glue in step ① to 200-260°C and apply it to the surface of the UHMWPE film; ④ Pressurize the surface of the ultra-high molecular weight polyethylene diaphragm after step ③ glue coating, and the ultra-high molecular weight polyethylene diaphragm is pressurized during walking; ⑤Calendering the ultra-high molecular weight polyethylene film that is walking after pressurization; ⑥ Put the calendered ultra-high molecular weight polyethylene film into the cooling box for cooling, and the cooling liquid is lower than 25°C; ⑦Rewinding the cooled ultra-high molecular weight polyethylene film; The method of coating the ultra-high molecular weight polyethylene film is completed by a laminating machine. The structure of the laminating machine is as follows: an adhesive extruder (2) is installed on the extruder (2) of the adhesive machine. Adhesive extrusion tube (19), an adhesive mold (7) is installed at one end of the adhesive extrusion pipe (19), a bracket (20) is installed on one side of the adhesive extruder (2), and an ultra-high molecular weight polyethylene film roll (1 ), the other end of the bracket (20) is installed with an ultra-high molecular weight polyethylene film winder motor (16), and the first roll group (4) and the main roll (8) are installed sequentially on the support (20) from the end where the film roll is installed ), the second roll set (9) and the cooling box guide roll (11), the ultra-high molecular weight polyethylene film on the film roll (1) passes through the first roll set (4), the main roll (8), the cooling box The guide roll is wound into the winder, and the torch (6) is installed between the first roll group (4) and the main roll (8), and the nozzle of the torch (6) is located above the upper surface of the ultra-high molecular weight polyethylene film , the glue outlet port of the adhesive extrusion pipe (19) is located between the torch (6) and the main roll (8), and a cooling box (10) is installed between the second roll set (9) and the winder (15). 2. the bonding method of a kind of ultra-high molecular weight polyethylene film and metal plate according to claim 1, is characterized in that: use in the bonding method of described ultra-high molecular weight polyethylene film and metal plate The heating equipment is an ultra-high frequency induction machine with a frequency of about 200KHz and a power of 20-30KW. 3. The bonding method of a kind of ultra-high molecular weight polyethylene film and metal plate according to claim 2, characterized in that: the ultra-high frequency induction machine adopts a movable heating head which separates the heating head from the host, and the heating head Connect with the host with a flexible coaxial cable. 4. The bonding method of a kind of ultra-high molecular weight polyethylene film and metal plate according to claim 1, characterized in that: the ultra-high molecular weight polyethylene in the described ultra-high molecular weight polyethylene film coating method The entire process of the diaphragm from step ② to step ⑦ is carried out during walking. The walking speed of the ultra-high molecular weight polyethylene diaphragm is 20-30 cm/s. The vertical distance from the surface of the ultra-high molecular weight polyethylene film is 2.5-3.5 cm. 5. The bonding method of a kind of ultra-high molecular weight polyethylene film and metal plate according to claim 1, characterized in that: described in step ④ in the described ultra-high molecular weight polyethylene film coating method To pressurize the surface of the ultra-high molecular weight polyethylene diaphragm, use a heated polytetrafluoro roll to pressurize, and the surface temperature of the roll is 160°C-175°C. 6. The bonding method of ultra-high molecular weight polyethylene film and metal plate according to claim 1, characterized in that: the cooling box (10) is set under the bracket (20), and the bottom of the cooling box (10) is Two cooling box guide rollers (11) are installed, and the two cooling box guide rollers (11) are arranged in parallel. 7. A bonding method of ultra-high molecular weight polyethylene film and metal plate according to claim 1, characterized in that: between the cooling box (10) and the winder (15) on the support (20) Install guide wheels (13). 8. The bonding method of ultra-high molecular weight polyethylene film and metal plate according to claim 1, characterized in that: an electric heating tube is installed inside the main roll (8), and the electric heating tube is connected to the main roll (8). The surface is heated, the surface temperature of the main roll (8) is 160°C-175°C, and the surface of the main roll (8) is coated with a polytetrafluoroethylene layer.