WO2020237900A1

WO2020237900A1 - Composite material production line and production method based on vertical gravity tension method

Info

Publication number: WO2020237900A1
Application number: PCT/CN2019/104977
Authority: WO
Inventors: 蒋文君; 蒋佳芸; 陈超; 高伟凯
Original assignee: 江苏云芯电气有限公司
Priority date: 2019-05-30
Filing date: 2019-09-09
Publication date: 2020-12-03
Also published as: CA3141580A1; ZA202109191B

Abstract

Provided are a composite material production line and a production method based on a vertical gravity tension method, the production method involving: firstly, sequentially arranging all apparatuses of the composite material production line vertically from top to bottom according to a production sequence, and setting a coaxial processing channel at the center of each processing area; then pulling a raw material tensioned with prestress using a traction device, such that the raw material passes through each processing apparatus along the processing channel sequentially in the vertical direction, so as to obtain a finished fiber-reinforced composite material (FRP) profile. According to the invention, the problems of insufficient resin immersion and interlayer bubbles are thoroughly solved by means of the production line design of a vertical structure, the complete curing of the fiber-reinforced composite material is ensured, and the pipe quality is improved. The profile produced therefrom has a wide range of applications, and can be used for various profiles in power systems and petrochemical engineering, and also in a 5G pole-tower. Since inorganic material is used therein, the 5G pole-tower has excellent lightning protection and anti-interference performance and an anti-corrosion protection lasting for 50 years; and same is two-thirds the cost of an ordinary iron tower and only one-sixth the weight of the iron tower.

Description

Composite material production line and production method based on vertical heavy vertical tensioning method

Technical field

The invention relates to the technical field of composite material production, in particular to a composite material production line and a production method based on a vertical heavy vertical tensioning method.

Background technique

As we all know, products made of glass fiber reinforced resin are widely used in national defense, industrial and agricultural production and people’s daily life, such as missile shells and satellites, for their corrosion resistance, high temperature resistance, radiation resistance, low density, good rigidity, and high strength. Fairings, heat-proof materials for spacecraft, shells, fins and propellers of aircraft and ships, glass fiber reinforced resin products are mainly used in the civil industry for pressure vessels and pipes, anti-corrosion vessels, automobile dashboards, and bumpers , Electrical insulation, yachts, etc., when glass fiber reinforced resin products are mainly used in various pipelines, the production process mainly includes coating resin on glass fiber, and winding the resin coated glass fiber layer by layer through a pressure roller and a winding shaft After the thickness of the winding reaches the requirement of the tube wall, a glass fiber reinforced resin blank tube is produced, and then cured at a high temperature to obtain the final finished tube. But in the production process, the most common problem is that during the winding process, air bubbles or voids are formed between the layers due to the presence of air, which seriously affects the product quality and performance, resulting in a low product qualification rate and increased production costs. Moreover, the glass fiber is still a certain distance away from the winding roller after the sizing step. During this distance, the glue agglutination often occurs, which leads to uneven distribution of the glue in the overshoot of the winding process. After drying, tiny air chambers will appear in the pipe wall, which will seriously affect the product quality and service life of the finished pipe. Another common drawing and extrusion process is to pass reinforcement materials such as felt, cloth, and continuous untwisted yarn through an impregnated resin, then pass through a pipe mold, and then be drawn by a tractor to continuously produce different lengths. Restricted epoxy resin pipes and other products.

The mechanical strength of glass fiber composites is mainly determined by the fibers. The main function of the matrix resin is to bond the bundles of fibers together to transfer stress and strain. If the bond between the resin and the fiber is not good, the stress cannot be effectively transferred between the fibers, and it is difficult for the fiber to bear the main load.

The following is an example of the application of glass fiber composite materials in insulated towers and petrochemical pipelines:

1. Insulating pole tower:

In recent years, due to the expansion of the application field of glass fiber composite materials, with its excellent characteristics such as light weight, high strength, weather resistance, and strong corrosion resistance, glass fiber composite materials have been used in the field of power communication and transmission. Transmission poles, towers and other products can greatly improve the insulation of the line, and greatly improve the line's resistance to pollution flashover, ice flashover, wind deviation, and lightning resistance. The performance and use of composite power transmission towers have gradually attracted attention in the power field.

At present, most of the poles and towers designed by composite materials are single pole type, and their transmission voltage level is limited to below 35KV. Higher voltage levels are still not applicable, and the carrying capacity cannot meet the special requirements of high voltage levels, which limits the development of composite poles.

2. Petrochemical pipeline:

The most widely used steel pipeline anti-corrosion coatings in China are petroleum asphalt, PE jacket and PE foam jacket, epoxy coal tar pitch, coal tar enamel, epoxy powder and three-layer composite structure, etc. Currently, the two most widely used pipeline anti-corrosion coatings The method is a three-layer structure polyolefin anti-corrosion layer and a single-layer powder epoxy.

(1) Petroleum bitumen anticorrosion layer, the anticorrosion layer is made of glass fiber cloth after being soaked in asphalt and placed on the outer wall of the oil pipeline to play a role in anticorrosion. The technology is relatively mature, the required raw materials are low in price, and the sources of materials and ingredients are easy and extensive. However, the material has low temperature resistance and high water absorption. Due to the inhalation of more water, the anti-corrosion performance of the material will be reduced. Also, due to the influence of the surrounding environment and other factors, the anti-corrosion effect will also decline linearly. Moreover, the working conditions are poor, the quality is difficult to guarantee, and the environmental pollution is serious.

(2) Epoxy coal tar pitch is easy to operate, but the covering layer has a long curing time and is greatly affected by the environment. It is not suitable for field operations and is difficult to construct below 10°C.

(3) Fusion-bonded epoxy powder anticorrosive coating, because the fusion-bonded epoxy powder anticorrosive coating has strong adhesion to the surface of the steel pipe, chemical media corrosion resistance, temperature resistance, etc. are relatively good, corrosion resistance, cathodic disbondment resistance , Aging resistance, soil stress resistance and other properties are also very good, the use temperature range is wide. But the coating is thin, the impact resistance of sharp objects is poor, and it is easily damaged by impact.

(4) Epoxy powder anti-corrosion, using electrostatic spraying method, good fusion with the same material anti-corrosion pipe body, strong adhesion, but epoxy powder has poor water resistance (high water absorption rate, up to 0.83%). Cathodic protection design brings certain difficulties. On-site appliances are demanding, difficult to operate, and difficult to control quality.

(5) Polyolefin anticorrosive layer is divided into two-layer structure and three-layer structure. The bottom layer of the two-layer structure is adhesive and the outer layer is polyethylene; the bottom layer of the three-layer structure is epoxy coating, the middle layer is adhesive, and the surface layer is polyethylene. The epoxy coating in the three-layer structure can be liquid epoxy coating or epoxy powder coating.

The main advantages of the two-layer polyolefin anticorrosion layer are high insulation resistance, good stray current resistance, and convenient construction. The main disadvantage is that the spiral lap joint is long, which is easy to cause adhesion failure at the lap joint and form corrosive medium infiltration.

The three-layer polyolefin anticorrosive layer has strong pipeline anticorrosion and sealing performance, high mechanical strength, strong waterproofness, stable quality, convenient construction, good applicability, and no pollution to the environment. PE has low water absorption (less than 0.01%), high epoxy strength, low PE water absorption, and good hot melt flexibility. It has high corrosion resistance and reliability. The disadvantages are: high cost and complex process.

At present, the production lines of glass fiber composite materials at home and abroad are all semi-automatic growth lines, and the production method is horizontal production. As shown in Figure 7, due to the large diameter of the pipe produced, the mold is highly eccentric from the top and bottom of the product, and the pultrusion process will be uneven. Air contact can easily form bubbles and holes between the layers of the pultruded composite material, causing problems such as hollowing and eccentricity of the pipe; in addition, due to gravity, the resin infiltrated in the upper layer will automatically flow down during the pultrusion process, causing the upper fiber to lack resin , The lower fiber layer is rich in resin, and the part lacking resin in the upper layer will not be cured, and the product section will become white, which will seriously affect the strength of the pipe and the stability of the product is extremely low.

Summary of the invention

In order to solve the problems of the prior art, the present invention provides a composite material production line based on the vertical heavy vertical tensioning method and a production method thereof. The vertical structure of the production line design thoroughly solves the problems of insufficient resin immersion and interlayer bubbles. Ensure the complete curing of the fiber reinforced composite material and improve the quality of the profile.

The invention includes a plurality of vertically distributed processing areas separated by floor planes, a coaxial processing channel is opened in the center of the processing area, and the traction device vertically pulls the pre-stressed raw materials through the processing channels of each processing area to complete processing. The processing area includes an inner mold forming area, an outer mold forming area, a solidification and setting area, a surface treatment area, a traction area, an injection cooling area, a cutting area and a finished product stacking area in order from top to bottom.

In a further improvement, a sliding rail hanging beam is provided on the top of the inner mold forming area, a resin immersion tank and resin injection equipment are provided at the bottom, and the sliding rail hanging beam is installed with a vertical cable passing through and coaxial with the processing channel. Lifting inner core mold; around the lifting inner core mold there are a number of cloth-stretching racks, yarn-stretching racks and felt-stretching racks, cloth-stretching racks, yarn-stretching racks and felts The yarn, felt, and cloth on the rack pass through the inner core mold and pass through the immersion tank to form an inner mold and enter the next layer area down.

In a further improvement, the outer mold forming area includes a large winding turntable, a second resin immersion tank, and a vertically arranged outer mold distributed from top to bottom around the processing channel, and a plurality of belt tensioners are distributed around the large winding turntable. Fabric frame and belt tension felt frame.

In a further improvement, the surface treatment zone includes a surface polishing zone and a surface cleaning zone, and a dust collection device is arranged in the surface treatment zone.

As a further improvement, a deep well pit is provided at the bottom of the stacking area.

In a further improvement, the yarns, felts, and cloths are all basalt polymer fibers, aramid fibers, glass fibers, carbon fibers and the like.

As a further improvement, exhaust gas treatment equipment is provided at the top of the processing area.

The present invention also provides a composite material production method based on the vertical heavy vertical tensioning method, which includes the following process: first arrange the equipment of the composite material production line vertically from top to bottom in the production order, and set up in the center of each processing area Coaxial processing channels; then the traction device is used to pull the pre-tensioned raw materials, so that the processing channels in the vertical direction pass through the processing equipment in turn to obtain the finished fiber-reinforced composite material profiles.

The traction process specifically includes the following steps:

1) Pre-stressed tensioning of cloth, yarn and felt through belt tensioning cloth rack, belt tensioning yarn rack, and belt tensioning felt rack;

2) Under the traction of the traction device, the pre-tensioned yarn, cloth, and felt are passed through the inner core mold, and after being pressurized and immersed for many times through the resin immersion tank, they enter the second layer down;

3) Wrap the cloth through multiple sets of winding large turntables outside the inner mold and then add the felt, and then pass through the resin immersion tank for multiple pressurization and immersion and enter the outer mold mold. The inner and outer molds are heated and cured at the same time, and then heated by the oven for curing Stereotype

4) Grind and clean the cured profile;

5) Injection of the cleaned pipe, cooling and cutting after injection, to obtain a fiber reinforced composite material profile.

The beneficial effects of the present invention are:

1. By replacing the conventional horizontal pultrusion process with the vertical heavy vertical tensioning method, one is to solve the technical problem that large-size modules cannot be fixed in the conventional horizontal pultrusion process, and the other is to completely solve the lack of resin immersion and interlayer bubbles. The problem is to ensure the complete curing of the fiber-reinforced composite material profile and improve the quality of the pipe. The production line can be used to produce ordinary resin profiles at the same time. Under the condition of slightly increasing production costs, the performance of the profiles can be doubled.

2. Through the vertical vertical tensioning method, by changing the structure of the inner mold, you can install the honeycomb-like structure mold to pull and extrude the hollow structure profile; through the vertical vertical tensioning method, the mold installation method is changed from linear plane installation. For multi-dimensional three-dimensional installation, the preparation of hollow parts and various special-shaped pipes can be realized, which cannot be achieved by traditional horizontal tensioning methods.

3. Design the tension frame, prestress the yarn, cloth, felt, etc. before production, improve the rigidity of the profile itself, reduce vibration and elastic deformation. This can significantly improve the elastic strength of the tension module and make the original resistance Stronger.

4. The use of basalt polymer fibers for the production of reinforced composite material profiles has excellent insulation, high temperature resistance, good rigidity, high strength, corrosion resistance, acid resistance, and aging resistance. Basalt fiber has high tensile strength and yield strength and is low in price. The processed twistless roving is suitable for the development of prestressed basalt fiber composite materials; the processing of basalt fiber is relatively simple, and the processing process is green and environmentally friendly, which is in line with the world's new energy-saving and environmentally friendly materials The technical requirements meet the requirements of the world's sustainable development of circular economy.

5. The new insulation profiles produced have a wide range of applications. They can be used in power systems for high-strength and ultra-light insulation tools, insulation poles, and insulation arms; they can be used in various pipelines in the petrochemical industry; they can be used in civil pressure vessels, Anti-corrosion containers, automobile dashboards and bumpers, etc.; it can also be used for 5G towers. Due to the use of inorganic materials, it has excellent lightning protection and anti-interference performance. It has 50-year anti-corrosion protection. The cost is two-thirds of the ordinary tower and the weight is only the tower. One-sixth.

6. The research and development of the composite material production line based on the vertical heavy vertical tensioning method is the first in the world, filling the gap in related fields, and being the world's leading level.

Description of the drawings

Figure 1 is a schematic diagram of the structure of the present invention.

Figure 2 is a schematic diagram of the structure of the inner mold forming area and the outer mold forming area.

Figure 3 is a schematic diagram of the structure of the surface treatment zone.

Figure 4 is a schematic diagram of the traction zone structure.

Figure 5 is a schematic diagram of the injection cooling zone and cutting zone structure.

Figure 6 is a schematic diagram of the structure of the finished product stacking area.

Fig. 7 is a schematic diagram of a die in the existing horizontal stretch extrusion process.

Fig. 8 is a schematic diagram of a mold used in the vertical re-hanging tensioning method of the present invention.

Figure 9 is a cross-sectional view of a profile die with a complex structure that can be installed with a honeycomb-like structure in a vertical pultrusion.

Detailed ways

The present invention will be further described below in conjunction with the drawings.

A specific structure of the present invention is shown in Fig. 1, which includes a 12-layer processing area separated by a floor surface 17 vertically distributed, a coaxial processing channel is opened in the center of the processing area, and a traction device vertically pulls the raw material that has been prestressed. The processing is completed through the processing channels of each processing area in turn. The processing area includes an inner mold forming area, an outer mold forming area, a solidification and setting area, a surface treatment area, a traction area, an injection cooling area, a cutting area and a finished product stacking area in order from top to bottom. The overall height is 67m, and the bottom of the equipment is equipped with a 30-meter deep well.

The structures of the inner mold forming area and the outer mold forming area of the first layer and the second layer are shown in FIG. 2, and the exhaust gas treatment equipment 1 is provided at the top of the processing area. The top of the inner mold forming area is provided with a slide rail hanging beam 2, and the bottom is provided with a resin immersion tank 7 and resin injection molding equipment. The slide rail hanging beam is installed with a vertical liftable inner core mold passing through and coaxial with the processing channel. 6; The inner core mold can be raised and lowered 6 distributed around a number of belt tensioning rack 3, with tensioning creel 5 and belt tensioning felt rack 4, with tensioning cloth rack, belt tensioning creel and belt tensioning The yarn, felt and cloth on the felt frame pass through the inner core mold 6 and pass through the immersion tank 7 to form an inner mold 9 and enter the outer mold forming area downward. The outer mold forming area includes a large winding turntable 8, a resin immersion tank 7, and a vertically arranged outer mold 10 distributed from top to bottom around the processing channel. A number of strips are distributed around the winding turntable 8 Frame 3 and belt tension felt frame 4.

The pipe 18 is pulled out from the outer mold 10 and enters the curing and shaping zone (the third and fourth layers are ovens) for curing and shaping. After curing and shaping, it enters the fifth layer surface polishing zone, and the surface is polished by the polishing machine 12. After the polishing is completed, it enters the sixth layer surface cleaning area, and the surface of the pipe is cleaned by the cleaning device 13. The fifth and sixth layers are equipped with a dust collecting cover 11 sheathed on the outer edge of the pipe. As shown in Figure 3.

After the polishing and cleaning are completed, enter the traction area, and the hydraulic traction device 19 pulls the pipe and hauls it down into the ninth layer. (The seventh and eighth layers, as shown in Figure 4). The ninth floor is provided with an injection molding machine 14 and a corresponding cooling pool 15. Weather-resistant polymer plastic is injected into the outer layer of the insulating pipe. After the injection of the outer layer is completed, enter the automatic cutting device 16 (tenth layer) for fixed-length cutting, as shown in FIG. 5.

As a further improvement, a 30m deep well pit is provided at the bottom of the stacking area. After the pipe is cut, it falls into the deep well, and after being hoisted out, the pipe is in the lowermost stacking area 20, as shown in FIG. 6.

In a further improvement, the yarns, felts, and cloths are basalt polymer fibers, aramid fibers, glass fibers, carbon fibers and the like. The basalt polymer fiber is selected for the production of fiber-reinforced composite material profiles, which have excellent insulation, high temperature resistance, good rigidity, high strength, corrosion resistance, acid resistance, and aging resistance.

The processing method using this device is as follows:

1) The cloth, yarn, and felt are pre-tensioned through the belt tensioning cloth frame, the belt tensioning creel, and the belt tensioning felt frame.

2) Under the traction of the traction device, the pre-stressed yarn, cloth, and felt are passed through the inner core mold, through the resin immersion tank, and down into the second layer.

3) The cloth is wound multiple times outside the inner mold through multiple sets of winding large turntables, and then the felt is added, and then it enters the outer mold mold after passing through the resin immersion tank again.

4) Grind and clean the cured and shaped profiles, and collect dust through the dust cover during the grinding and cleaning process.

5) Inject the cleaned profile, cool and cut after injection, to obtain the finished profile.

The new type of fiber reinforced composite material profile produced in this way, the outer layer of injection-molded weather-resistant polymer plastic completely solves the problems of durability and anti-aging of the glass fiber composite material profile; the new one-vertical vertical tensioning method completely solves the horizontal tensioning The method has the problem of eccentricity; the use of basalt polymer fiber improves the electrical and mechanical properties of the profile. It can fully meet the requirements of insulating arm materials such as live working vehicles and live working robots.

The new type of fiber-reinforced composite material profile produced by the composite material production line of the vertical heavy vertical tensioning method is widely used in the market. It can be used in various pipelines in the power system and petrochemical industry, and can also be used in 5G towers. Due to the use of inorganic materials, The lightning protection and anti-interference performance are excellent, with 50 years of anti-corrosion protection, the cost is two-thirds of the ordinary iron tower, and the weight is only one-sixth of the iron tower.

1. Power system:

In the power system, the following aspects are mainly used:

1. Insulated pole tower

The number of power transmission line towers is huge, and the strength and rigidity of the new fiber reinforced composite material profiles can completely exceed the performance indicators of 45# steel. It can be used to make insulated poles and towers. Because of its own insulation, the matching fittings and insulators of the poles are greatly reduced; the cross arms of large steel pipe towers can be made of basalt fiber reinforced composite pipes, which can greatly reduce the safety between the upper and lower cross arms. Clearance distance, thereby reducing the height of the overall tower. Taking a 220kV steel pipe tower as an example, by using an insulating cross arm, the safety gap distance can be reduced by 8 meters, the total height can be reduced by 8 meters, the foundation, steel, etc. are greatly reduced, and insulators are not required, and the procurement cost is greatly reduced.

There are countless poles and towers across the country. The use of insulated poles or insulated crossarms greatly reduces their procurement costs, while reducing insulators and fittings, etc., and their corrosion resistance, good quality, and non-conductive insulation greatly reduce their maintenance costs. The market has broad prospects.

2. Live working tools

At present, non-stop maintenance is an inevitable trend in the development of power grids, and live working tools are necessary for non-stop maintenance. The new type of fiber-reinforced composite material profile can withstand high temperature, high mechanical strength, good rigidity, and excellent electrical insulation. Under the condition of meeting the safety requirements of live working, its weight is one-fourth of the current epoxy resin pipe, which is greatly improved The operability of tools can improve work efficiency.

3. Insulated arm

At present, most of the insulated arms used in China are imported. Even if some of the arms are made in China, the insulated arms are also imported from abroad. The price of a set of insulated arms varies with the voltage level, ranging from 50,000 to 300,000. Each county power supply company needs at least 4 insulated bucket trucks. The insulating arm made of the new high-strength insulating material studied by the company guarantees performance at only half of the imported price, and the market is relatively huge. For more than 2,000 counties across the country, the estimated amount is 1 billion.

2. Petrochemical:

On average, 20,000 kilometers of various transportation pipelines are built every year in my country, and the construction of oil pipelines will usher in a new climax. The pipeline made of this new type of fiber-reinforced composite material has high strength, corrosion resistance, maintenance-free, and large diameter, which can fully meet the needs of petrochemical pipelines. Compared with existing pipelines on the market, its strength and corrosion resistance are far superior to existing FRP and steel pipelines at the same price. This product has a huge market prospect.

3. 5G pole tower:

As 5G technology matures, it is an inevitable trend to achieve national 5G signal coverage. my country plans to invest 2.5 trillion yuan between 2020 and 2025 to achieve national 5G signal coverage. The existing signal towers are all iron tower structures, which are relatively heavy, and each tower needs to set up an independent lightning protection and interference prevention system, and the cost is relatively high. The new fiber-reinforced composite material profile produced by the invention can completely replace the metal pipe of the existing iron tower. Since the main body of the tower is an inorganic material, it has excellent lightning protection and anti-interference performance and has a 50-year anti-corrosion guarantee. In addition, the vertical heavy hammer tensioning method adopted in the present invention can realize the preparation of various hollow shaped pipes, greatly reducing the use of materials and the overall weight of the tower. The cost is two-thirds of that of an ordinary iron tower and the weight is only six times that of an iron tower. One part.

Compared with the traditional horizontal stretch extrusion process, the main improvement technical points of the present invention are as follows:

The first point is that the vertical pultrusion process solves the technical problem that large-size modules cannot be fixed in the conventional horizontal pultrusion process. In Figure 7, it includes a mold 22, a mold fixing device 23 and a heat curing device 21. The horizontal pultrusion mold is fixed by a fulcrum at one end of the mold, and the eccentricity of the pultruded product is adjusted through the fulcrum. However, in large-size FRP products In pultrusion, the mold used is very large. Take the 110kV composite pole tower as an example. The maximum diameter of the pole tower can reach 1500mm. The weight of the mold will be very large. In order to ensure that large-size FRP products can be quickly cured and bent in a short time, a curing heating device If the length of the pultrusion mold is shortened, the corresponding pultrusion mold will also be lengthened. The weight of the mold will be very amazing. It is impossible to fix the pultrusion mold only by the cantilever beam at one end of the mold. Cannot be cured completely. On the contrary, if the vertical pultrusion is adopted, as shown in Figure 8, the pultrusion mold is placed vertically, and the mold can be connected to the top of the roof through the fixing connecting device at the top. This makes full use of the earth stress, and the mold is naturally vertical. Position and fix it. In this way, no matter how large the mold is, it can be effectively fixed. There is no need to worry about the eccentricity of the pultrusion mold due to its own weight. At the same time, the mold size can be extended as much as possible to ensure that the large-size pultruded FRP sample is fully heated Cured, the material performance is better.

The second point is that the vertical pultrusion process solves the product gas problem in the conventional horizontal pultrusion process, and the product contains the technical problem of bubbles. During the pultrusion process, the air brought by the resin, the small molecules volatilized in the resin, and the water vapor in the fiber will escape upward after entering the mold and heating, but there is no vent at the upper end of the horizontal pultrusion curing device, so it is difficult for the gas to escape in time After being solidified in the composite body, large and small bubbles are produced. This is the reason why the pultrusion process cannot be too fast. The faster the gas escapes, the more difficult it is, and the more bubbles will be in the product. In the vertical pultrusion, the gas will automatically escape upward after being heated, and will be discharged from the upper end of the curing device, instead of being cured into the product because it cannot escape in time, forming bubble defects.

The third point is that the vertical pultrusion process solves the technical problems of lack of resin infiltration on the top of the preform and abundant resin below it that appears in the conventional pultrusion process. In the horizontal pultrusion process, the fiber infiltrates the resin, and when the fiber enters the curing device, the resin will automatically flow downwards under the action of gravity. As a result, the upper part of the fiber lacks resin infiltration and cannot be cured, and the bottom fiber The problem of resin surplus. Vertical pultrusion, the impregnated fiber and resin go down together, and the problem of fiber and resin separation will not occur. At the same time, the pressure is increased by the resin injection press equipment to completely solve the problem of uneven resin distribution on the fiber.

The fourth point is that the vertical pultrusion process can be installed with a honeycomb-like structure die to pull and extrude hollow structural profiles. Utilizing the technical characteristics of FRP composite materials and design to maximize the weight reduction of composite materials while increasing the modulus of structural parts, realizing light weight and high strength in the true sense. Due to the space and installation characteristics, horizontal pultrusion cannot install the complex mold in Figure 9, while vertical pultrusion can take advantage of the three-dimensional space to install pultrusion molds with different complex structures to achieve the hollowness of large-scale component products, which is guaranteed by design The strength and modulus of the composite material component can further effectively reduce the cost of the composite material component by removing unnecessary weight. This hollow structure composite material component will be an ideal substitute for truss towers, bridge components and many infrastructure concrete reinforcement materials.

Fifth, the vertical pultrusion process can save the equipment area by placing the equipment vertically. Compared with horizontal installation, vertical installation makes full use of the space above and below the ground and takes up less plant area. For the economically developed East China, where the land is expensive, it can save a lot of production line construction and purchase land area costs.

Sixth, the vertical pultrusion production line can be the same as the ordinary horizontal pultrusion. The new equipment has better compatibility and can be equipped with an injection molding device to directly inject a layer of weather-resistant polymer plastic on the surface of the pultruded continuous profile. , Improve the weather resistance of the entire component product, and ensure the stability of the product for outdoor applications without reducing the production and processing efficiency and productivity of the product.

There are many specific applications of the present invention. The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements can be made without departing from the principle of the present invention. Improvements should also be regarded as the protection scope of the present invention.

Claims

A composite material production line based on the vertical heavy vertical tensioning method, which is characterized in that it includes a plurality of vertically distributed processing areas separated by floor planes, a coaxial processing channel is opened in the center of the processing area, and a traction device vertically pulls through The pre-tensioned raw materials are processed sequentially through the processing channels of each processing area.
The composite material production line based on the vertical heavy vertical tensioning method according to claim 1, wherein the processing area includes an inner mold forming area, an outer mold forming area, a curing and shaping area, and a surface from top to bottom. Processing area, traction area, injection cooling area, cutting area and finished product stacking area.
The composite material production line based on the vertical heavy vertical tensioning method according to claim 2, characterized in that: the top of the inner mold forming area is provided with a sliding rail hanging beam, and the bottom is provided with a resin immersion tank and resin injection press equipment , The slide rail hanging beam is installed with a vertical liftable inner core mold that passes through and is coaxial with the processing channel; a number of belt tensioning racks, belt tensioning creels and belts are distributed around the lifting inner core mold The yarn, felt and cloth on the tensioned felt rack, the tensioned cloth rack, the tensioned yarn rack and the tensioned felt rack pass through the inner core mold, pass through the immersion tank to form an inner mold and enter the next layer area.
The composite material production line based on the vertical heavy vertical tensioning method according to claim 2, characterized in that: the outer mold forming area includes a large winding turntable distributed from top to bottom around the processing channel, and a second resin immersion A pool and a vertically arranged outer mold, and a plurality of belt-tensioned cloth racks and belt-tensioned felt racks are distributed around the winding large turntable.
The composite material production line based on the vertical heavy vertical tension stretching method according to claim 2, wherein the surface treatment zone includes a surface polishing zone and a surface cleaning zone, and the surface treatment zone is provided with dust collection equipment.
The composite material production line based on the vertical heavy vertical tensioning method according to claim 2, wherein a deep well pit is provided at the bottom of the stacking area.
The composite material production line based on the vertical drape stretching method according to claim 2, wherein the yarn, felt, and cloth are basalt polymer fibers, aramid fibers, glass fibers, carbon fibers and the like.
The composite material production line based on the vertical heavy vertical stretching method according to claim 1, characterized in that: an exhaust gas treatment device is provided at the top of the processing area.
A composite material production method based on the vertical heavy vertical tensioning method is characterized by including the following processes: first arrange the equipment of the composite material production line vertically from top to bottom in the production sequence, and set up a coaxial line in the center of each processing area The processing channel; and then use the traction device to pull the pre-tensioned raw material, so that the processing channel along the vertical direction sequentially passes through the processing equipment to obtain the finished fiber-reinforced composite material profile.
The method for producing a composite material based on the vertical heavy vertical tensioning method according to claim 9, characterized in that the traction process specifically includes the following steps:

1) Pre-stressed tensioning of cloth, yarn and felt through belt tensioning cloth rack, belt tensioning yarn rack, and belt tensioning felt rack;

2) Under the traction of the traction device, the pre-tensioned yarn, cloth, and felt are passed through the inner core mold, and after being pressurized and immersed for many times through the resin immersion tank, they enter the second layer down;

3) Wrap the cloth through multiple sets of winding large turntables outside the inner mold and then add the felt, and then pass through the resin immersion tank for multiple pressurization and immersion and enter the outer mold mold. The inner and outer molds are heated and cured at the same time, and then heated by the oven for curing Stereotype

4) Grind and clean the cured profile;

5) Injection molding of the cleaned profile, cooling and cutting after injection, to obtain the finished fiber-reinforced composite profile.