CN111873488B - Preparation method of bridging type strong-corner-point glass fiber reinforced plastic frame - Google Patents
Preparation method of bridging type strong-corner-point glass fiber reinforced plastic frame Download PDFInfo
- Publication number
- CN111873488B CN111873488B CN202010554314.1A CN202010554314A CN111873488B CN 111873488 B CN111873488 B CN 111873488B CN 202010554314 A CN202010554314 A CN 202010554314A CN 111873488 B CN111873488 B CN 111873488B
- Authority
- CN
- China
- Prior art keywords
- glass fiber
- reinforced plastic
- bridging
- fiber reinforced
- corner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
- B29C70/525—Component parts, details or accessories; Auxiliary operations
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/043—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with glass fibres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/06—Unsaturated polyesters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Moulding By Coating Moulds (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The invention discloses a preparation method of a bridging type strong-angle-point glass fiber reinforced plastic frame, belonging to the technical field of glass fiber reinforced plastic processing, can realize that the bidirectional bridging bars are pre-embedded at four corners, then the glass fiber is forced to circularly flow, wherein part of the specially treated fibers with magnetism actively approach and penetrate into the bidirectional bridging rod under the connection of grafting pores, the preset fillers are released, on one hand, the inorganic fillers are directly and uniformly released to the corner area to be matched with the glass fiber for high reinforcement, on the other hand, the released self-heating materials react with oxygen to generate a large amount of heat, the rubber materials at the corners are directly and preferentially heated and cured from the inside, the forming effect is improved, the corners of the frame are intensively reinforced on the premise of controlling the cost of raw materials, so that the strength and the quality of the glass fiber reinforced plastic frame are greatly improved.
Description
Technical Field
The invention relates to the technical field of glass fiber reinforced plastic processing, in particular to a preparation method of a bridging type strong-corner glass fiber reinforced plastic frame.
Background
Glass Fiber Reinforced Plastics (FRP), also known as GFRP, is a fiber reinforced plastic, generally a reinforced plastic made of a matrix of unsaturated polyester, epoxy resin and phenolic resin reinforced with glass fibers or products thereof, and is called glass fiber reinforced plastic, or glass fiber reinforced plastic, different from tempered glass.
Because of the variety of the resin used, there are polyester glass fiber reinforced plastics, epoxy glass fiber reinforced plastics and phenolic glass fiber reinforced plastics. Light weight, hardness, non-conductivity, stable performance, high mechanical strength, less recovery and corrosion resistance. Can replace steel to manufacture machine parts, automobile shells, ship shells and the like.
The glass fiber reinforced plastic is named as Fiber Reinforced Plastic (FRP), namely fiber reinforced composite plastic. The fiber is classified into glass fiber reinforced composite plastic (GFRP), carbon fiber reinforced composite plastic (CFRP), boron fiber reinforced composite plastic, and the like according to the difference of the adopted fiber. It is a composite material using glass fibre and its products (glass cloth, band, felt and yarn, etc.) as reinforcing material and synthetic resin as base material. The fiber reinforced composite material is composed of reinforcing fibers and a matrix. The diameter of the fiber (or whisker) is very small, generally below 10 mu m, the defects are few and small, the fracture strain is about thirty thousandths of a thousand, and the fiber (or whisker) is a brittle material and is easily damaged, fractured and corroded. The matrix is much lower in strength and modulus than the fibers, but can withstand large strains, tends to be viscoelastic and elastoplastic, and is a tough material.
At present, glass fiber reinforced plastic is widely applied to various fields, but when a glass fiber reinforced plastic frame is manufactured, mechanical fatigue damage is easy to occur due to the long-term stress relation, so that the quality is affected, and especially when corners are obviously pressed, the phenomenon can aggravate the deformation or even the damage of the frame.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a preparation method of a bridging type strong-corner-point glass fiber reinforced plastic frame, which can realize that bidirectional bridging rods are pre-embedded at four corners, then glass fibers are forced to flow circularly, wherein part of the specially treated fibers with magnetism actively approach and penetrate into the bidirectional bridging rod under the connection of grafting pores, the preset fillers are released, on one hand, the inorganic fillers are directly and uniformly released to the corner area to be matched with the glass fiber for high reinforcement, on the other hand, the released self-heating materials react with oxygen to generate a large amount of heat, the rubber materials at the corners are directly and preferentially heated and cured from the inside, the forming effect is improved, the corners of the frame are intensively reinforced on the premise of controlling the cost of raw materials, so that the strength and the quality of the glass fiber reinforced plastic frame are greatly improved.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A preparation method of a bridging type strong-corner-point glass fiber reinforced plastic frame comprises the following steps:
s1, weighing 25-55% by mass of resin for the glass fiber reinforced plastic profile and 45-75% by mass of glass fiber, and preparing a corresponding die;
s2, respectively placing four bidirectional bridging rods with proper sizes at four corners of a rubber groove in a mold, and primarily shaping;
s3, stirring and mixing the resin and the glass fiber to obtain a sizing material, injecting the sizing material into a glue groove in the mold after uniform mixing, and enabling the sizing material to flow along the glue groove for at least three cycles;
s4, after enough glass fibers are adsorbed on the two-way bridging rod and no obvious bubbles are generated, immediately setting the temperature of a pultrusion machine to be 80-120 ℃, and naturally cooling after the section bar is pulled out;
and S5, performing surface treatment on the section, spraying protective coating, drying and curing to obtain a finished product.
Furthermore, the glass fiber comprises a normal glass fiber and a magnetic glass fiber, the normal glass fiber is an alkali-free glass fiber without any treatment, the diameter of the alkali-free glass fiber is 10-30 mu m, the magnetic glass fiber is also an alkali-free glass fiber with the diameter of 10-30 mu m, one end of the alkali-free glass fiber is soaked in a nano ferromagnetic solution and then is dried and magnetized, and the magnetic glass fiber is partially magnetized, so that grafting is realized by matching with a self-grafting pore conveniently, and meanwhile, the phenomenon that two-phase attraction generates agglomeration after the whole body has magnetism is avoided, and the dispersion in a sizing material and subsequent grafting are influenced.
Furthermore, the length ratio of the magnetic strength glass fiber to the normal strength glass fiber is 1:0.5-0.8, the mass content ratio is 1:0.2-0.4, and the magnetic strength glass fiber with enough length and quantity needs to be ensured to intensively reinforce the corner of the frame, so that the forming strength is improved.
Further, the resin for the glass fiber reinforced plastic profile comprises the following raw materials in parts by weight: 30-40 parts of unsaturated polyester resin, 10-20 parts of inorganic filler, 1-2 parts of defoaming agent, 1-2 parts of flatting agent, 0.4-1 part of release agent, 0.2-0.5 part of accelerator, 2-2.5 parts of curing agent, 0.5-2 parts of dispersing agent and 0.2-1 part of low-shrinkage additive.
Further, the unsaturated polyester resin is phthalic acid type unsaturated polyester resin or isophthalic acid type unsaturated polyester resin, the inorganic filler is hollow microspheres, silicon dioxide, calcium carbonate or talcum powder, the defoaming agent is polyether modified organic silicon, the leveling agent is silane or fluorocarbon modified polyether, the release agent is zinc stearate, phosphate ester or triethanolamine oil, the accelerator is cobalt iso-octoate, the curing agent is benzoyl peroxide, methyl ethyl ketone peroxide or tert-butyl peroxybenzoate, the dispersing agent is a silane coupling agent, and the low-shrinkage additive is polyvinyl acetate, polymethyl methacrylate or polystyrene.
Further, two-way bridging stick includes that a plurality of buckles are the high-elastic prestressing force pole of right angle form, the center and the both ends position of high-elastic prestressing force pole all weld and have three point setting ball, three be connected with interim setting thermalization pole between the three point setting ball, interim setting thermalization pole adopts hot melt resin material to make, utilizes the high elastic force of high-elastic prestressing force pole self to give one at the frame inside and is used for resisting the prestressing force of part external force to improve the compressive strength of frame corner, extend in the high-elastic prestressing force pole also to the side of two directions simultaneously, improve the wholeness between corner and the side with the means of similar bridging.
Furthermore, the high-elasticity prestressed rods are in two rows which are distributed in a staggered mode, and a gap is reserved between every two rows of high-elasticity prestressed rods, so that the overall prestress strength of the two-way bridging rod can be improved, and meanwhile, the contact area between the high-elasticity prestressed rods and a rubber material is also improved, so that the binding force between the high-elasticity prestressed rods and a base body is improved, and enough magnetic glass fibers can be conveniently grafted to reinforce the corner area.
Furthermore, a plurality of evenly distributed's the pore of grafting certainly has been seted up on the high-elastic prestressing force pole surface, fixedly connected with magnetism suction layer on the downthehole diapire of grafting hair, a plurality of filler balloons of fixedly connected with on the magnetism suction layer, block cellosilk from grafting pore opening part fixedly connected with confined isolation emulsion membrane and many crisscross distributions, and block cellosilk is located the outside of keeping apart emulsion membrane, utilizes magnetism suction layer to the magnetic attraction of magnetism strong formula glass fiber to force its initiative to be close to and the gathering, and wherein part magnetism strong formula glass fiber passes block cellosilk and punctures the isolation emulsion membrane and gets into from the grafting hair downthehole, begins to trigger interior heat and fixed point reinforcement action.
Furthermore, the filler balloon is filled with a mixture of a spontaneous heating material and an inorganic filler and compressed hydrogen in a mixing mass ratio of 1:1, when the magnetic glass fiber punctures the filler balloon, the internal filler is released, the inorganic filler is uniformly filled to the position near the bidirectional bridging rod along the potential, local concentrated reinforcement is carried out on the position, and meanwhile, the spontaneous heating material and oxygen are subjected to oxidation reaction to provide heat for promoting the interior to start curing and forming.
Further, include spherical entrapment portion from interior to exterior from the grafting pore, accelerate the neck and to the joint portion, spherical entrapment portion is hemispherical, the neck is the shrink form with higher speed, be open form to the joint portion, and keep apart latex film fixed connection in accelerating the neck and to the junction of joint portion, spherical entrapment portion hemispherical can have very high joint strength after magnetism intensity formula glass fiber and sizing material combine the shaping here, difficult peeling off from high-elastic prestressing force pole and drop, the neck plays the effect that a shrink is accelerated with higher speed, helps the filler balloon to pack out with higher speed at this place in the compression hydrogen parcel area solid mixture powder after being punctured, the open form of spherical entrapment portion can improve magnetism intensity formula glass fiber grafting's success nature, is favorable to it initiatively to insert to in the grafting pore.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) the scheme can realize pre-burying bidirectional bridging bars at four corners, then force glass fiber to circularly flow, wherein part of specially processed fibers with magnetism are led down from grafting pores on the bidirectional bridging bars, actively approach and puncture the fibers to enter the bidirectional bridging bars, preset fillers are released, on one hand, inorganic fillers are directly and uniformly released to the corner region to be matched with the glass fiber for high reinforcement, on the other hand, the released self-heating materials react with oxygen to generate a large amount of heat, the rubber materials at the corners are directly and preferentially heated and cured from the inside, the forming effect is improved, the corners of the frame are intensively reinforced on the premise of controlling the cost of raw materials, and the strength and the quality of the glass fiber reinforced plastic frame are greatly improved.
(2) Two-way bridging stick includes that a plurality of buckles are the high-elastic prestressing force pole of right angle form, the center and the both ends position of high-elastic prestressing force pole all weld the three point setting ball, be connected with interim setting thermalization pole between the three point setting ball, interim setting thermalization pole adopts hot melt resin material to make, the high elastic force that utilizes high-elastic prestressing force pole self gives a prestressing force that is used for resisting partial external force in the frame is inside, thereby improve the compressive strength of frame corner, high-elastic prestressing force pole also extends in the side to two directions simultaneously, improve the wholeness between corner and the side with the means of similar bridging.
(3) The high-elastic prestressed rods are distributed in two rows in a staggered mode, and a gap is reserved between every two rows of high-elastic prestressed rods, so that the overall prestress strength of the two-way bridging rod can be improved, and meanwhile, the contact area between the high-elastic prestressed rods and a rubber material is also increased, the binding force between the high-elastic prestressed rods and a base body is improved, and enough magnetic glass fibers can be conveniently grafted to reinforce the corner area.
(4) A plurality of uniformly distributed self-grafting pores are formed in the outer surface of the high-elasticity prestressed rod, a magnetic absorption layer is fixedly connected to the inner bottom wall of each grafting pore, a plurality of filler balloons are fixedly connected to the magnetic absorption layer, a closed isolation latex film and a plurality of staggered grid-blocking fibers are fixedly connected to the opening of each grafting pore, each grid-blocking fiber is located on the outer side of the isolation latex film, the magnetic absorption layer is used for forcing the magnetic absorption layer to be close to and gather the magnetic absorption layer actively, part of the magnetic absorption layer penetrates through the grid-blocking fibers and pierces the isolation latex film to enter the corresponding grafting pores, and internal heat and fixed-point reinforcing action are triggered.
(5) The filler balloon is filled with a mixture of a self-heating material and an inorganic filler and compressed hydrogen in a mixing mass ratio of 1:1, when the magnetic glass fiber punctures the filler balloon, the internal filler is released, the inorganic filler is uniformly filled to the position near the two-way bridging rod along the potential, local concentrated reinforcement is carried out on the position, and meanwhile, the self-heating material and oxygen are subjected to oxidation reaction to provide heat for promoting the internal part to start curing and forming.
(6) The self-grafting pore comprises a spherical interception part from inside to outside, an acceleration neck and a joint part, the spherical interception part is hemispherical, the acceleration neck is in a shrinkage shape, the joint part is in an open shape, an isolation latex film is fixedly connected to the joint of the acceleration neck and the joint part, the hemispherical shape of the spherical interception part can have high connection strength after the magnetic strength type glass fiber and the sizing material are combined and formed, the spherical interception part is not easy to peel off and fall off from a high-elastic pre-stressed rod, the acceleration neck plays a role in shrinkage acceleration, the filler balloon is favorable for being filled with compressed hydrogen wrapped solid mixture powder at the punctured position in an acceleration mode, the open shape of the spherical interception part can improve the success rate of grafting of the magnetic strength type glass fiber, and the active insertion of the filler into the self-grafting pore is facilitated.
Drawings
FIG. 1 is a schematic flow diagram of the present invention;
FIG. 2 is a schematic view of the structure inside the glue tank of the present invention;
FIG. 3 is a front view of the bi-directional bridging bar of the present invention;
FIG. 4 is a side view of a bi-directional bridging rod of the present invention;
FIG. 5 is a schematic structural view of a high resilience prestressed rod portion according to the present invention;
fig. 6 is a schematic view of the structure at a in fig. 5.
The reference numbers in the figures illustrate:
1 high elastic prestressed rod, 2 three-point setting balls, 3 temporary setting thermalization rods, 4 self-grafting pores, 41 spherical interception parts, 42 accelerating necks, 43 pairs of joint parts, 5 lattices of fiber blocking wires, 6 isolation latex films, 7 filler balloons and 8 magnetic absorption layers.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1-2, a method for manufacturing a bridging-type strong-corner glass fiber reinforced plastic frame includes the following steps:
s1, weighing 25% by mass of resin for the glass fiber reinforced plastic profile and 75% by mass of glass fiber, and preparing a corresponding die;
s2, respectively placing four bidirectional bridging rods with proper sizes at four corners of a rubber groove in a mold, and primarily shaping;
s3, stirring and mixing the resin and the glass fiber to obtain a sizing material, injecting the sizing material into a glue groove in the mold after uniform mixing, and enabling the sizing material to flow along the glue groove for at least three cycles;
s4, after enough glass fibers are adsorbed on the two-way bridging rod and no obvious bubbles are generated, immediately setting the temperature of a pultrusion machine to 80 ℃, and naturally cooling after the section bar is pulled out;
and S5, performing surface treatment on the section, spraying protective coating, drying and curing to obtain a finished product.
The glass fiber comprises normal glass fiber and magnetic glass fiber, the normal glass fiber is alkali-free glass fiber which is not processed, the diameter is 10-30 mu m, the magnetic glass fiber is also alkali-free glass fiber with the diameter of 10-30 mu m, one end of the glass fiber is soaked with nano ferromagnetic solution and then dried to be magnetized, the magnetic glass fiber is partially magnetized, the glass fiber can be conveniently matched with the self-grafting pores 4 to realize grafting, the phenomenon that the whole glass fiber is attracted in pairs and conglomerated after the glass fiber has magnetism to influence dispersion and subsequent grafting in a sizing material is avoided, the length ratio of the magnetic glass fiber to the normal glass fiber is 1:0.5-0.8, the mass content ratio is 1:0.2-0.4, and the magnetic glass fiber with enough length and quantity needs to be ensured to intensively reinforce the corner of a frame, so that the forming strength is improved.
The resin for the glass fiber reinforced plastic profile comprises the following raw materials in parts by weight: 30 parts of unsaturated polyester resin, 10 parts of inorganic filler, 1 part of defoaming agent, 1 part of flatting agent, 0.4 part of release agent, 0.2 part of accelerator, 2 parts of curing agent, 0.5 part of dispersing agent and 0.2 part of low-shrinkage additive.
The unsaturated polyester resin is phthalic acid type unsaturated polyester resin or isophthalic acid type unsaturated polyester resin, the inorganic filler is hollow microspheres, silicon dioxide, calcium carbonate or talcum powder, the defoaming agent is polyether modified organic silicon, the flatting agent is silane or fluorocarbon modified polyether, the release agent is zinc stearate, phosphate or triethanolamine oil, the accelerator is cobalt iso-octoate, the curing agent is benzoyl peroxide, methyl ethyl ketone peroxide or tert-butyl peroxybenzoate, the dispersing agent is a silane coupling agent, and the low-shrinkage additive is polyvinyl acetate, polymethyl methacrylate or polystyrene.
Referring to fig. 3-4, the bidirectional bridging rod includes a plurality of high-elastic prestressed rods 1 bent in a right-angle shape, the high-elastic prestressed rods 1 are linear rods having elasticity in a normal state, and are welded and fixed by three-point shaping balls 2, and then are temporarily shaped and fixed by temporary shaping thermalizing rods 3, and then in the process of curing and molding, a rubber material is gradually cured to replace the temporary shaping thermalizing rods 3 to shape the rods, and the temporary shaping thermalizing rods 3 are melted and then mixed with the rubber material, the three-point shaping balls 2 are welded at the center and both ends of the high-elastic prestressed rods 1, the temporary shaping thermalizing rods 3 are connected between the three-point shaping balls 2, the temporary shaping thermalizing rods 3 are made of a hot-melt resin material, so as to reduce the influence on the quality of the rubber material, and a prestress for resisting a part of external force is applied inside the frame by the high-elastic force of the high-elastic prestressed rods 1, thereby improve the compressive strength of frame corner, high-elastic prestressing force pole 1 also extends in to the side of two directions simultaneously, improve the wholeness between corner and the side with the means of similar bridging, high-elastic prestressing force pole 1 is two rows of staggered distribution, and every row of high-elastic prestressing force pole 1 leaves the space each other, both can improve the whole prestressing force intensity of two-way bridging stick, also improve the area of contact with the sizing material simultaneously, thereby improve and the cohesion between the base member, also make things convenient for the abundant magnetic strength formula glass fiber of grafting to come to reinforce the corner region.
Referring to fig. 5-6, the outer surface of the high-elasticity prestressed rod 1 is provided with a plurality of self-grafting pores 4 which are uniformly distributed, the inner bottom wall of each self-grafting pore 4 is fixedly connected with a magnetic absorption layer 8, the magnetic absorption layer 8 is fixedly connected with a plurality of filler balloons 7, a closed isolation latex film 6 and a plurality of staggered grid baffle fibers 5 are fixedly connected to the opening of each self-grafting pore 4, each grid baffle fiber 5 is positioned on the outer side of the isolation latex film 6, the magnetic absorption layer 8 is used for forcing the magnetic strong glass fibers to actively approach and gather by utilizing the magnetic attraction force of the magnetic absorption layer 8 on the magnetic strong glass fibers, wherein part of the magnetic strong glass fibers penetrate through the grid baffle fibers 5 and penetrate through the isolation latex film 6 to enter the self-grafting pores 4 to start triggering internal heat and fixed-point reinforcement actions, the filler balloons 7 are filled with a mixture of a self-heating material and an inorganic filler and compressed hydrogen in a mass ratio of 1:1, and when the magnetic strong glass fibers penetrate through the filler balloons 7, the inorganic filler is uniformly filled near the two-way bridging rod along the same potential to locally concentrate and reinforce, meanwhile, the self-heating material and oxygen are used for generating oxidation reaction to provide heat for promoting the inside to start solidification and molding, the grafting pore 4 comprises a spherical interception part 41, an acceleration neck part 42 and a butt joint part 43 from inside to outside, the spherical interception part 41 is hemispherical, the acceleration neck part 42 is in a shrinkage shape and is open to the joint part 43, the isolation latex film 6 is fixedly connected at the connection part of the acceleration neck part 42 and the butt joint part 43, the hemispherical shape of the spherical interception part 41 can have high connection strength after the magnetic strength type glass fiber and sizing material are combined and molded, the spherical interception part is not easy to peel off from the high-elastic pre-stress rod 1, the acceleration neck part 42 plays a role of shrinkage acceleration, and is helpful for the filler balloon 7 to break and compress the hydrogen wrapping solid mixture powder to be filled at the position in an accelerated way after being punctured, the open shape of the spherical interception part 41 can improve the success of the magnetic strong type glass fiber grafting and is beneficial to the active insertion of the magnetic strong type glass fiber into the self-grafting pores 4.
Example 2:
a preparation method of a bridging type strong-corner-point glass fiber reinforced plastic frame comprises the following steps:
s1, weighing 40% by mass of resin for the glass fiber reinforced plastic profile and 60% by mass of glass fiber, and preparing a corresponding die;
s2, respectively placing four bidirectional bridging rods with proper sizes at four corners of a rubber groove in a mold, and primarily shaping;
s3, stirring and mixing the resin and the glass fiber to obtain a sizing material, injecting the sizing material into a glue groove in the mold after uniform mixing, and enabling the sizing material to flow along the glue groove for at least three cycles;
s4, after enough glass fibers are adsorbed on the two-way bridging rod and no obvious bubbles are generated, immediately setting the temperature of a pultrusion machine to be 100 ℃, and naturally cooling after the section bar is pulled out;
and S5, performing surface treatment on the section, spraying protective coating, drying and curing to obtain a finished product.
The resin for the glass fiber reinforced plastic profile comprises the following raw materials in parts by weight: 35 parts of unsaturated polyester resin, 15 parts of inorganic filler, 1.5 parts of defoaming agent, 1.5 parts of flatting agent, 0.7 part of release agent, 0.3 part of accelerator, 2.2 parts of curing agent, 1 part of dispersing agent and 0.6 part of low-shrinkage additive.
The remainder was in accordance with example 1.
Example 3:
a preparation method of a bridging type strong-corner-point glass fiber reinforced plastic frame comprises the following steps:
s1, weighing 55 mass percent of resin for the glass fiber reinforced plastic profile and 45 mass percent of glass fiber, and preparing corresponding dies;
s2, respectively placing four bidirectional bridging rods with proper sizes at four corners of a rubber groove in a mold, and primarily shaping;
s3, stirring and mixing the resin and the glass fiber to obtain a sizing material, injecting the sizing material into a glue groove in the mold after uniform mixing, and enabling the sizing material to flow along the glue groove for at least three cycles;
s4, after enough glass fibers are adsorbed on the two-way bridging rod, no obvious bubbles are generated, immediately setting the temperature of a pultrusion machine to 120 ℃, and naturally cooling after the section bar is pulled out;
and S5, performing surface treatment on the section, spraying protective coating, drying and curing to obtain a finished product.
The resin for the glass fiber reinforced plastic profile comprises the following raw materials in parts by weight: 40 parts of unsaturated polyester resin, 20 parts of inorganic filler, 2 parts of defoaming agent, 2 parts of flatting agent, 1 part of release agent, 0.5 part of accelerator, 2.5 parts of curing agent, 2 parts of dispersing agent and 1 part of low-shrinkage additive.
The remainder was in accordance with example 1.
The invention can pre-embed the two-way bridging bars at four corners, then force the glass fiber to circularly flow, wherein part of the specially processed fiber with magnetism actively approaches and punctures into the grafting pores under the connection of the two-way bridging bars, and releases the preset filler, on one hand, inorganic filler is directly and uniformly released to the corner area to match with the glass fiber for high reinforcement, on the other hand, the released self-heating material reacts with oxygen to generate a large amount of heat, and the rubber material at the corner is directly and preferentially heated and solidified from the inside, thereby improving the forming effect, and the corner of the frame is intensively reinforced on the premise of controlling the cost of the raw materials, and greatly improving the strength and quality of the glass fiber reinforced plastic frame.
The above are merely preferred embodiments of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (7)
1. A preparation method of a bridging type strong-corner-point glass fiber reinforced plastic frame is characterized by comprising the following steps: the method comprises the following steps:
s1, weighing 25-55% by mass of resin for the glass fiber reinforced plastic profile and 45-75% by mass of glass fiber, and preparing a corresponding die;
s2, respectively placing four bidirectional bridging rods with proper sizes at four corners of a rubber groove in a mold, and primarily shaping;
s3, stirring and mixing the resin and the glass fiber to obtain a sizing material, injecting the sizing material into a glue groove in the mold after uniform mixing, and enabling the sizing material to flow along the glue groove for at least three cycles;
s4, after enough glass fibers are adsorbed on the two-way bridging rod and no obvious bubbles are generated, immediately setting the temperature of a pultrusion machine to be 80-120 ℃, and naturally cooling after the section bar is pulled out;
s5, performing surface treatment on the section, spraying protective coating, drying and curing to obtain a finished product;
the glass fiber comprises a normal-strength glass fiber and a magnetic-strength glass fiber, the normal-strength glass fiber is an alkali-free glass fiber which is not subjected to any treatment and has a diameter of 10-30 mu m, the magnetic-strength glass fiber is also an alkali-free glass fiber with a diameter of 10-30 mu m, and one end of the magnetic-strength glass fiber is soaked with a nano ferromagnetic solution and then dried to be magnetized;
the bidirectional bridging rod comprises a plurality of high-elasticity prestressed rods (1) bent to form right angles, three-point setting balls (2) are welded at the center and at the two ends of each high-elasticity prestressed rod (1), temporary setting thermalization rods (3) are connected among the three-point setting balls (2), and the temporary setting thermalization rods (3) are made of hot-melt resin materials;
set up a plurality of evenly distributed on high-elastic prestressing force pole (1) surface from grafting pore (4), fixedly connected with magnetism inhales layer (8) on the diapire in grafting pore (4), a plurality of filler balloons of fixedly connected with (7) on magnetism inhales layer (8), keep off cellosilk (5) from the check that grafting pore (4) opening part fixedly connected with confined isolation emulsion membrane (6) and many crisscross distributions, and check keep off cellosilk (5) and be located the outside of isolation emulsion membrane (6).
2. The method for preparing the bridging-type strong-corner-point glass fiber reinforced plastic frame according to claim 1, is characterized in that: the length ratio of the magnetic strength glass fiber to the normal strength glass fiber is 1:0.5-0.8, and the mass content ratio is 1: 0.2-0.4.
3. The method for preparing the bridging-type strong-corner-point glass fiber reinforced plastic frame according to claim 1, is characterized in that: the resin for the glass fiber reinforced plastic profile comprises the following raw materials in parts by weight: 30-40 parts of unsaturated polyester resin, 10-20 parts of inorganic filler, 1-2 parts of defoaming agent, 1-2 parts of flatting agent, 0.4-1 part of release agent, 0.2-0.5 part of accelerator, 2-2.5 parts of curing agent, 0.5-2 parts of dispersing agent and 0.2-1 part of low-shrinkage additive.
4. The method for preparing the bridging-type strong-corner-point glass fiber reinforced plastic frame according to claim 3, wherein the method comprises the following steps: the unsaturated polyester resin is phthalic acid type unsaturated polyester resin or isophthalic acid type unsaturated polyester resin, the inorganic filler is hollow microspheres, silicon dioxide, calcium carbonate or talcum powder, the defoaming agent is polyether modified organic silicon, the flatting agent is silane or fluorocarbon modified polyether, the release agent is zinc stearate, phosphate or triethanolamine oil, the accelerator is cobalt iso-octoate, the curing agent is benzoyl peroxide, methyl ethyl ketone peroxide or tert-butyl peroxybenzoate, the dispersing agent is a silane coupling agent, and the low-shrinkage additive is polyvinyl acetate, polymethyl methacrylate or polystyrene.
5. The method for preparing the bridging-type strong-corner-point glass fiber reinforced plastic frame according to claim 1, is characterized in that: the high-elasticity prestressed rods (1) are distributed in two rows in a staggered mode, and a gap is reserved between every two rows of high-elasticity prestressed rods (1).
6. The method for preparing the bridging-type strong-corner-point glass fiber reinforced plastic frame according to claim 1, is characterized in that: the filler balloon (7) is filled with a mixture of a spontaneous heating material and an inorganic filler and compressed hydrogen in a mixing mass ratio of 1: 1.
7. The method for preparing the bridging-type strong-corner-point glass fiber reinforced plastic frame according to claim 1, is characterized in that: from grafting pore (4) include spherical entrapment portion (41) from inside to outside, accelerate neck (42) and to joint portion (43), spherical entrapment portion (41) are hemispherical, it is the shrink form to accelerate neck (42), be open form to joint portion (43), and keep apart emulsion membrane (6) fixed connection in accelerating neck (42) and to the junction of joint portion (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010554314.1A CN111873488B (en) | 2020-06-17 | 2020-06-17 | Preparation method of bridging type strong-corner-point glass fiber reinforced plastic frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010554314.1A CN111873488B (en) | 2020-06-17 | 2020-06-17 | Preparation method of bridging type strong-corner-point glass fiber reinforced plastic frame |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111873488A CN111873488A (en) | 2020-11-03 |
| CN111873488B true CN111873488B (en) | 2022-01-07 |
Family
ID=73157975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010554314.1A Active CN111873488B (en) | 2020-06-17 | 2020-06-17 | Preparation method of bridging type strong-corner-point glass fiber reinforced plastic frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111873488B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1000452A4 (en) * | 1987-04-06 | 1988-12-13 | Bekaert Sa Nv | Composite plastic granules including metal fibre and plastic products made therefrom. |
| JP2004051852A (en) * | 2002-07-22 | 2004-02-19 | Polymatech Co Ltd | Thermally conductive polymer molding and its production method |
| AT503850B1 (en) * | 2006-07-21 | 2008-01-15 | Fischer Adv Components Gmbh | Mold for hardening fiber-reinforced plastic moldings in aerospace industry, includes extraction strips held by system of projections, depressions and magnets |
| CN101376736B (en) * | 2008-09-28 | 2010-12-15 | 中材科技股份有限公司 | Carbon fibre bar containing super fine and preparation thereof |
| CN101858152B (en) * | 2010-06-05 | 2011-09-28 | 朱虹 | Strengthening construction method for through cracking concrete crossbeam |
| CN103589127B (en) * | 2012-08-15 | 2016-12-21 | 上海杰事杰新材料(集团)股份有限公司 | A kind of high transverse strength pultruded structural sheet material and preparation method thereof |
| CN109774196A (en) * | 2019-03-19 | 2019-05-21 | 江西省萍乡市宇翔电瓷制造有限公司 | The preparation method of ultra-high-tension power transmission line suspension insulator |
-
2020
- 2020-06-17 CN CN202010554314.1A patent/CN111873488B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111873488A (en) | 2020-11-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4974675B2 (en) | Production method of chopped strand | |
| US11584835B2 (en) | Laminated substrate and method for manufacturing the same | |
| US9096750B2 (en) | Fiber-reinforced resin composition | |
| EP3237511B1 (en) | Fibre reinforcement of anisotropic foams | |
| JP4748717B2 (en) | Fiber reinforced thermoplastic resin molding | |
| EP2889438A1 (en) | Core material for sandwich panel and method for manufacturing same, and sandwich panel comprising core material | |
| EP2503036A1 (en) | Spun yarn and intermediate for fiber-reinforced resin, and molded article of fiber-reinforced resin using same | |
| US20040188883A1 (en) | Near net shape prepreg | |
| TW201412506A (en) | Pul-core process with PMI foam core | |
| TWI602671B (en) | Impregnated reinforcing fiber yarn and its use in producing composite materials | |
| JP2001064406A (en) | Preform for fiber-reinforced preform and fiber- reinforced composite material using the same and production thereof | |
| CN111873488B (en) | Preparation method of bridging type strong-corner-point glass fiber reinforced plastic frame | |
| CN115256796A (en) | Forming process of basalt fiber composite material | |
| Hamdan et al. | Effect of alkaline treatment on mechanical properties of woven ramie reinforced thermoset composite | |
| CN104178886A (en) | Novel three-dimensional woven composite material for automobile ceiling | |
| Ericson et al. | The effect of microstructure on the elastic modulus and strength of performed and commercial GMTs | |
| KR20180097184A (en) | Method of forming fiber reinforced plastic | |
| Babu et al. | A comparative study on mechanical properties of kenaf fiber-reinforced polyester composites prepared by VARI, RTM and CM techniques | |
| CN115558260B (en) | PA56 composite wire reinforced PLA-based biodegradable composite material and preparation method thereof | |
| de M de Lima et al. | Natural Fibre-Reinforced Polymer Composites: Manufacturing and Biomedical Applications | |
| DE102004047552B4 (en) | Production of airgel composite materials | |
| Mahendran et al. | Properties of woven natural fiber-reinforced biocomposites | |
| Ibrahim et al. | Effect of different coconut fiber length composition as reinforcement and enhanced with polyester on elasticity profile | |
| CN111286986A (en) | PBO/high-modulus CF composite material and preparation method thereof | |
| CN116355357A (en) | Long-short carbon nano tube reinforced and toughened fiber composite material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20211210 Address after: 242100 Anhui province Xuancheng County Langxi County Meishan town Da Liang Industrial Park Applicant after: ANHUI XINYU FIBER GLASS DOOR Co.,Ltd. Address before: 722300 No. 70, Qijia village, Majia Town, Mei County, Baoji City, Shaanxi Province Applicant before: Da Xiaoli |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |