CN103802324A - Composite material containing tool and manufacturing process thereof - Google Patents

Composite material containing tool and manufacturing process thereof Download PDF

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Publication number
CN103802324A
CN103802324A CN201410062443.3A CN201410062443A CN103802324A CN 103802324 A CN103802324 A CN 103802324A CN 201410062443 A CN201410062443 A CN 201410062443A CN 103802324 A CN103802324 A CN 103802324A
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Prior art keywords
resin
fiber
storage apparatus
agent
prepreg
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CN201410062443.3A
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CN103802324B (en
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许剑海
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许剑海
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06Fibrous reinforcements only
    • B29C70/10Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B29C70/12Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of short length, e.g. in the form of a mat
    • B29C70/14Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of short length, e.g. in the form of a mat oriented
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28Shaping operations therefor
    • B29C70/40Shaping or impregnating by compression not applied
    • B29C70/42Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
    • B29C70/44Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding

Abstract

The invention relates to a composite material containing tool and a manufacturing process of the composite material containing tool. The fiber reinforced resin matrix is used for the field of manufacturing of the containing tool; due to the adoption of the high-performance fiber composite material, the problems of low bearing capacity, easily occurred deformation and shaking, and the like in a traditional containing tool are solved; a vacuum forming process of gradually heating after casting is used in the casting forming of a containing tool connector, the technological difficulty that the resin matrix composite material cast body has large possibility of generating bubble is overcome; compared with an existing plastic connector, the connector product obtained according to the manufacturing process disclosed by the invention has the advantages that the firmness and the durability are improved significantly, and furthermore, the process is simple and is easy to implement; in each component of the containing tool, due to the filling function and reinforcing function in different directions of the fibers in the composite material and due to the adoption of the molding forming process, the excellent mechanical property and the size stability of each component of the containing tool are guaranteed, and due to the adoption of an adhesive sticker, the direct end-to-end connection of two components can be realized, the use of screws is reduced, and therefore the containing tool is more convenient to assemble and disassemble; because an interlayer bearing component is produced by using the integral molding process, the trouble processes of assembling, welding and the like are avoided, and the production efficiency is improved.

Description

Composite storage apparatus and manufacturing process thereof
Technical field
The present invention relates to a kind of composite storage apparatus and manufacturing process thereof.
Background technology
Existing storage apparatus, mostly be and adopt timber or steel framework to be spliced to form by connector, exist supporting power low, easily rock, yielding, load and unload loaded down with trivial details, the drawback such as production technology is numerous and diverse, timber is easily damaged by worms and steel use amount is large, especially in the connection of steel pipe support,, very easily there is the distortion of the storage apparatus causing because of the damage of plastic fastening and the drawback shortening in service life in the common plastic fastening of many employings.
Summary of the invention
The present invention improves the problems referred to above, the technical problem to be solved in the present invention be existing storage apparatus supporting power low, easily rock, yielding, load and unload loaded down with trivial details, production technology is numerous and diverse and the distortion of the storage apparatus that causes because of the damage of plastic fastening and service life the drawback such as shorten.
The first specific embodiments of the present invention is: a kind of composite storage apparatus, the building block of described storage apparatus comprises support, combined plate, for the connector of connection bracket or combined plate, for depositing and various supporting members, door and window, handle and the various decorative elements for decorating of suspended item, its material of one or more parts of described storage apparatus is fiber reinforced resin based composite material.
Further, described supporting member comprises interlayer supporting member, suspension member and drawer, and described interlayer supporting member comprises housing and be arranged at thin bar or the base plate in housing, described housing and thin bar or the base plate structure that is formed in one.
Further, described thermosetting resin comprises epoxy resin, unsaturated polyester resin, phenolic resins, described thermoplastic's resin comprises polypropylene, nylon resin, polyvinyl chloride, polystyrene, polyimides, ABS, described organic fiber comprises aramid fiber, superhigh molecular weight polyethylene fibers, and described inorfil comprises glass fibre, carbon fiber, basalt fibre, ceramic fibre.
The second specific embodiments of the present invention also comprises a kind of composite storage apparatus manufacturing process, and above-mentioned a kind of composite storage apparatus, comprises following production stage:
(1), the manufacture of described storage apparatus connector comprises following methods:
(1) production stage of fiber reinforced thermosetting resin composite storage apparatus connector:
1. chopped carbon fiber is mixed and puts into resin with short glass fiber, high-speed stirred 5~8min;
2. by step, fiber and the resin compound in 1. poured open containers into, and puts into vacuum heater, more than the volatilization temperature of solvent, under the temperature conditions of 10 ℃, vacuumizes heated at constant temperature, to the solvent in this mixture lower than 1%;
3. matched moulds locking after mould inner surface brushing releasing agent, a reserved plug hole;
4. product step being formed in 2. takes out vacuum heater, and under resin melting temperature conditions, is filled mold cavity, then locking die, and reserved several ventholes;
5. mould is placed in vacuum heater and is vacuumized, and with the heating rate of 5 ~ 10 ℃/min, mould is heated up and is heated to above 10 ℃ of the volatilization temperature of solvent;
6. treat that 5. step continues after 20min, with the heating rates of 10 ~ 20 ℃/min, mould is warming up to resin and produces following 10~15 ℃ of the temperature of gelation reaction;
7. after treating that 6. step maintains 30min, the technique solidification temperature by mold heated to resin;
8., after treating that 7. step maintains 45min, stop vacuumizing, cooling, the demoulding, deburring, then carry out, after necessary post processing, obtaining connector goods;
(2) production stage of fiber-reinforced thermoplastic resin composite storage apparatus connector:
1. chopped strand fully mixed and is dried with resin, additive high-speed stirred, then starting injection moulding machine, above mixture is fed to board by hopper;
2. pressurize after locked mode, by injection system, mixture high speed and high pressure under molten condition is injected to mold cavity, after melt is full of die cavity, need to make melt keep certain pressure and maintain a period of time, to avoid Material shrinkage that product size is changed;
3. the cooling rear demoulding, then carry out necessary post processing, obtain connector goods;
(2), the manufacture of described storage apparatus support and combined plate comprises following methods:
(1) the roll-forming production stage of fiber reinforced thermosetting resin composite storage apparatus support:
1. adopt wet method or the preparation of dry method preimpregnated process to form fiber-reinforced resin prepreg;
2. by step, the prepreg in is 1. tailored into different angles and size and carries out stackedly, makes the fiber in neighbouring prepreg at an angle to each other;
3. the prepreg laminates 2. step being formed have at cover on the core of nylon airbag, roll coated;
4. pull out core, leave nylon airbag and nylon airbag one end sealing other end is connected with blowing nozzle, form product to be formed;
5. after mould inner surface brushing releasing agent, the product to be formed that 4. step is formed is put into mould;
6. matched moulds locking, delivers to mould on hot-platen and carries out hot-pressing air-blowing forming, makes between stacked prepreg, to fit tightly and be close to mold cavity, to obtain the goods of preliminary dimension;
7. after cooling and demolding, pull out blowing nozzle and nylon airbag, then after post processing, obtain receiving apparatus support;
(2) the pultrusion production stage of fiber reinforced thermosetting resin composite storage apparatus support and combined plate:
1. deployed resin is poured in the resin storage tank of pultrusion board, and fiber is positioned on fiber frame, the use amount of fiber should the weight ratio in goods calculate according to the thickness in goods cross section and fiber, when two kinds and two or more fiber carry out compound tense, various fibers will be placed in proportion;
2. start pultrusion board, make fiber under the tractive of draw-gear, make fiber obtain the abundant dipping of resin through resin storage tank continuously with certain tension force and speed; And then through preforming tool, make fiber after impregnation according to section material section collocation form, progressively form the preform that is approximated to pattern die cavity shape and size, can guarantee that like this goods section forming out in next step is even containing yarn amount, and extrude unnecessary resin; Finally again through the mould depanning continuously after moulding that is heating and curing;
3. by the goods of depanning on request length automatically cut; After necessary post processing, obtain support and combined plate goods again.
(3) the pultrusion production stage of fiber-reinforced thermoplastic resin composite storage apparatus support and combined plate:
1. screw extruder is connected with forming machine using drawing and extrusion, the two becomes the direction of 90 degree;
2. by after thermoplastic resin and additive feeding screw extruder, under the effect of screw extruder, the resin compound of melting enters in the resin impregnation tank in forming machine using drawing and extrusion by resin flow channel, and resin impregnation tank temperature remains on the melt temperature of resin;
3. make fiber on fiber frame under the tractive of draw-gear, pass through continuously the resin impregnation tank in forming machine using drawing and extrusion with certain tension force and speed, make fiber obtain the abundant dipping of resin;
4. pass through again preforming tool, make the fiber after impregnation progressively form the preform that is approximated to pattern die cavity shape and size, and extrude unnecessary resin, the temperature of preforming tool remains on the melt temperature of resin, has further promoted the dipping of resin to fiber;
5. finally by pulling straight goods after supercooling shaper;
6. product is from cooling shaping mould depanning, and length on request cuts automatically, then passes through necessary post processing, obtains support and combined plate goods;
(3), the manufacturing step of described storage apparatus interlayer supporting member comprises:
(1) the fiber-reinforced resin prepreg that adopts wet method or the preparation of dry method preimpregnated process to form;
(2) prepare the coated core that rolls of interlayer supporting member, wherein the core of outer frame part adopts foamed material, and the core of thin bar part adopts finer wire;
(3) prepreg in step (1) be tailored into different angles and size and carry out stackedly, making the fiber in neighbouring prepreg at an angle to each other;
(4) the prepreg laminates of preparing in the mandrel surface encapsulation steps (3) of the outer frame part described in (2) and thin bar part is to form respectively the coated product of housing and thin bar;
(5) put into a positioning fixture for pre-setting by rolling the housing that has been coated and the coated product of thin bar, and thin bar and housing are connected with fiber-reinforced resin prepreg, to form product to be formed;
(6) product to be formed that step (5) formed are put into mould, locking die, heating extrusion forming;
(7), after the demoulding, deburring, carries out, after necessary post processing, obtaining interlayer supporting member;
(4), at the junction coating adhesive sticker of support, combined plate, supporting member and connector, can realize four between directly closely docking, and it is easier to make to receive the handling of apparatus.
Further, described dry method preimpregnated process fiber-reinforced resin prepreg comprises following process steps:
(1) continuous fiber tow is closely arranged into certain width equably by same direction, or employing has the fabric of certain width and makes it drawout;
(2) at continuous fiber tow or the even coating resin PUR of fabric face;
(3) be tailored into as requested predetermined length and different angles;
Described wet method preimpregnated process fiber-reinforced resin prepreg comprises following process steps:
(4) by continuous fiber tow or textile impregnation resin solution;
(5) fibre bundle with resin is closely arranged into certain width equably by same direction, or by the fabric drawout with resin;
(6) be tailored into as requested predetermined length and different angles;
(7) prepreg is heated most of solvent is volatilized in 35~40 ℃ of environment, make solvent in last prepreg below 1%.
Further, described resin comprises one or both in epoxy resin and unsaturated polyester resin.
Further, described dry method preimpregnated process fiber-reinforced resin prepreg comprises following process steps:
(1) continuous fiber tow is closely arranged into certain width equably by same direction, or employing has the fabric of certain width and makes it drawout;
(2) at continuous fiber tow or the even coating resin PUR of fabric face;
(3) be tailored into as requested predetermined length and different angles;
Described wet method preimpregnated process fiber-reinforced resin prepreg comprises following process steps:
(4) by continuous fiber tow or textile impregnation resin solution;
(5) fibre bundle with resin is closely arranged into certain width equably by same direction, or by the fabric drawout with resin;
(6) be tailored into as requested predetermined length and different angles;
(7) prepreg is heated most of solvent is volatilized in 35~40 ℃ of environment, make solvent in last prepreg below 1%.
Further, described resin comprises one or both in epoxy resin and unsaturated polyester resin.
Further, described dry method preimpregnated process Formulaion of epoxy resin comprises A agent and B agent, and its each constituent mass umber is as follows:
A agent
50~55 parts of NPES-901 solid epoxies;
18~20 parts of NPEL-128 liquid epoxies;
Nanometer SiO 21 part;
B agent
18~22 parts of NPEL-128 liquid epoxies;
4~6 parts of DDA-5;
1 part of U-24M;
Described epoxy resin concocting method comprises:
(1) after first the NPES-901 solid epoxy heating in A agent being melted, then add other component of A agent, stir fully rear cooling;
(2) at room temperature allocate B agent;
(3) before resin uses, A agent is mixed with B agent, fully stir;
Described wet method preimpregnated process Formulaion of epoxy resin comprise A agent and and B agent, its each constituent mass umber is as follows:
A agent
26~30 parts of NPES-901 solid epoxies
23~25 parts of NPEL-128 liquid epoxies
0.6 part of nanometer SiO2
27 parts of butanone
B agent
0.3 part of nanometer SiO2
3.6 parts of DDA-5
0.6 part of U-24M
12~13 parts of butanone
(1) first by after first the NPES-901 solid epoxy heating in A agent being melted, then add other component of A agent, after stirring fully, be down to room temperature, finally add butanone, again stir;
(2) at room temperature allocate B agent;
(3) before resin uses, A agent is mixed with B agent, fully stir.
Further, the vacuum heater that described producd fibers strengthens thermoset ting resin composite storage apparatus connector comprises a vacuum tank, in described vacuum tank, be provided with the heater that can carry out temperature programming, vacuum tank is connected by exhaust tube with a vavuum pump, the blast pipe of described vavuum pump is through a condensing unit Exhaust Gas, described condensing unit comprises an airtight chamber, in described airtight chamber, is provided with condenser, and airtight chamber bottom is connected with a solvent collection tank.
Further, the mould that described producd fibers strengthens thermoset ting resin composite storage apparatus connector comprises upper and lower mould, described patrix is provided with and is communicated with the plug hole that diameter is 2~3cm with die cavity, described plug hole is provided with cast stopple, plug hole is evenly distributed with the venthole that the diameter that is communicated with die cavity is 1~2mm beyond the Great Wall, and cast stopple thickness will be more than 2cm.
Compared with prior art, the present invention has following beneficial effect:
(1) innovatively fiber reinforced resin based composite material is applied to storage apparatus and manufactures field, for the update of storage apparatus material is laid a good foundation;
(2) the present invention is applied to temperature programming vacuum forming technique after the cast of independent research in the moulding by casting of fiber reinforced thermosetting resin matrix composite storage apparatus connector, the technological difficulties that polymer matrix composites pour mass easily produces bubble are overcome well, and simple to operate, be easy to implement, gained connector goods are compared with existing plastic fastening, there is high strength, high-modulus and not easy to crack, greatly reduced the distortion of storage apparatus and the shortening of service life that bring because of the damage of connector;
(3) fibrage carries out stacked laying with different angular orientation on the each parts of storage apparatus, meet the requirement of the each parts of storage apparatus to intensity and rigidity, specific strength and the specific modulus of frame structure are promoted, in effectively reducing storage apparatus own wt, its stability and supporting power are significantly improved;
(4) filling of fibers in composites and humidification in different directions, and the application of molding process planning, the mechanical performance of the each parts excellence of storage apparatus and the dimensional stability of goods thereof are jointly guaranteed to comprise, can realize the directly closely docking between each parts in conjunction with the use of adhesive sticker, make whole storage apparatus one integrated mass, further improve the stability of frame structure, avoided steel-tube construction and yoke structure storage apparatus because of part dimension unstable, connect the shortcoming of easily rocking and being out of shape not tight and that produce, reduce simultaneously or avoided the use of screw, the handling that make to receive apparatus are easier.
(5) in the present invention, interlayer supporting member adopts integral forming process to produce, and has both promoted weight capacity, and globality is produced in enormous quantities again, has avoided the loaded down with trivial details flow process such as assembling, welding of steel framework structure interlayer supporting member, has improved production efficiency.
Accompanying drawing explanation
Fig. 1 is the one storage apparatus schematic diagram in the present invention.
Fig. 2 is interlayer supporting member structural representation of the present invention.
Fig. 3 is the vacuum heater structural representation that in the present invention, producd fibers strengthens thermoset ting resin composite storage apparatus connector.
Fig. 4 is multi-layer fiber prepreg stepped construction schematic diagram of the present invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
As shown in Fig. 1~4, the present embodiment comprises a kind of composite cabinet framework, described cabinet framework comprises support 10, for the connector 110 of connection bracket, for depositing and the various supporting members of suspended garment, and be attached to the various decorative elements for decorating of framework, one or more materials in connector, support, decorative element and supporting member are fiber reinforced resin based composite material, and described fiber can be one or more in glass fibre, carbon fiber or aramid fiber.
Described supporting member comprises the primary structure members such as suspension member or drawer such as interlayer supporting member, hook, peg 120, described interlayer supporting member 20 comprises housing 210 and is arranged at crisscross thin bar 220 in housing, described housing 210 and thin bar 220 structure that is formed in one, described resin can be epoxy resin and unsaturated polyester resin.
Fibre-reinforced resin matrix composite material mainly comprises following 3 kinds of modes of production: (below take epoxy resin as example)
(1) be uniformly mixed production technology:
1) chopped strand is mixed and puts into epoxy resin, high-speed stirred 5~8min;
2) in the present embodiment, the ratio of quality and the number of copies of fiber and epoxy resin solution is 1:1.
(2) dry method preimpregnated process:
1) continuous fiber tow closely and is equably arranged into certain width in same direction, or employing has the fabric of certain width and makes it drawout;
2) at continuous fiber tow or the even epoxy resin coating PUR of fabric face;
3) be tailored into as requested predetermined length and different angles;
(3) wet method preimpregnated process:
1) by continuous fiber tow or textile impregnation epoxy resin solution;
2) fibre bundle with resin closely and is equably arranged into certain width to same direction, or by the fabric drawout with resin;
3) be tailored into as requested predetermined length and different angles;
4) prepreg is heated most of solvent is volatilized in 35~40 ℃ of environment, make solvent in last prepreg below 1%.
It is consistent that in the present embodiment, concrete Formulaion of epoxy resin and following composite are received Formulaion of epoxy resin and component related in apparatus production technology.Wherein, being uniformly mixed production method can adopt and Formulaion of epoxy resin and component identical in wet method preimpregnated process.
The present invention is applied to dimension composite innovatively storage apparatus and manufactures field, temperature programming after the cast of independent research is vacuumized in the moulding by casting that moulding process is applied to fiber reinforced thermosetting resin composite storage apparatus connector, the technological difficulties that polymer matrix composites pour mass easily produces bubble are overcome well, and technique is simply easy to implement, gained connector goods are compared with existing plastic fastening, there is high strength, high-modulus and advantage not easy to crack, the distortion of storage apparatus and the shortening of service life that bring because of the damage of connector are greatly reduced.
The second specific embodiments of the present invention also comprises a kind of composite storage apparatus manufacturing process, comprises above-mentioned a kind of composite storage apparatus, take epoxy resin, glass fibre and carbon fiber as example, comprises following production stage:
(1) manufacturing step of described storage apparatus connector comprises:
Storage apparatus connector comprise three-dimensional connector or Bidirectional first-class, the connection that is mainly used in receiving apparatus support.
(1) short glass fiber or the mixing of carbon fiber fiber are put into epoxy resin, high-speed stirred 5~8min;
(2) pour fiber and epoxy resin composition in step (1) into open containers, and put into vacuum heater, more than the volatilization temperature of solvent, under the temperature conditions of 10 ℃, vacuumize heated at constant temperature, in the present embodiment, temperature is 80~90 ℃, to the solvent in this mixture lower than 1%;
(3) matched moulds locking after mould inner surface brushing releasing agent, a reserved plug hole;
(4) product forming in step (2) is taken out to vacuum heater, and under epoxy resin melt temperature condition, filled mold cavity, then locking die, and reserved several ventholes; In the present embodiment, epoxy resin melt temperature is 80~90 ℃;
(5) mould is placed in vacuum heater and is vacuumized, and with the heating rate of 5 ~ 10 ℃/min, mould is heated up and is heated to above approximately 10 ~ 20 ℃ of the volatilization temperature of solvent, in the present embodiment, temperature is 80~90 ℃;
In this stage, the state of epoxy resin is the viscous body with mobility, vacuumize the air of having removed remaining solvent in epoxy resin and being brought into, and epoxy resin can not be drawn out of.
(6) treat that step (5) continues after 20min, with the heating rates of 10 ℃/min, mould is warming up to epoxy resin and produces following 10~15 ℃ of the temperature of gelation reaction, in the present embodiment, be 105~115 ℃, and more than maintaining 30min;
In this stage, the state of epoxy resin progressively changes to gelation from having high fluidity, can continue to get rid of a small amount of solvent that may exist in epoxy resin, the air being brought into and epoxy resin the produced gas that reacts within a period of time.
(7) the technique solidification temperature to epoxy resin by mold heated, in the present embodiment is 145~155 ℃, and more than maintaining 45min, complete to guarantee epoxy resin cure;
(8) stop vacuumizing, cooling, the demoulding, deburring, then after necessary post processing, obtain connector goods;
The air bubble problem of epoxy resin composite material pour mass is technological difficulties always, the present invention is applied to temperature programming vacuum forming technique after the cast of independent research in the moulding by casting of fibre reinforced epoxy resin composite storage apparatus connector, overcome well these technological difficulties, and simple to operate, be easy to implement.Gained connector goods are without bubble, fibre reinforced materials distribution uniform, there is higher intensity, higher modulus and remarkable advantage not easy to crack compared with existing plastic fastening, greatly reduce the distortion of storage apparatus and shortening of service life that the damage of connector brings.
It is worth mentioning that, in order to complete better the manufacture of connector, the present invention also provides a kind of mould and vacuum heater for the production of fiber reinforced thermosetting resin composite storage apparatus connector:
As shown in Figure 3, mould comprises upper and lower mould, it is 2~3cm plug hole that described patrix is provided with the diameter being communicated with die cavity, described plug hole is provided with cast plug, cast is evenly distributed with the venthole that 3 diameters are 1~2mm beyond the Great Wall, cast stopple thickness will be more than 2cm, to prevent that extraction loop epoxy resins is taken out of mould in the time vacuumizing.
Vacuum heater comprises a vacuum tank 30, in described vacuum tank 30, be provided with can temperature programming heater 310, vacuum tank 30 is connected by exhaust tube 40 with a vavuum pump 50, because the solvent volatilizing in heating process cannot directly be discharged in atmosphere, therefore need to reclaim, the blast pipe 510 of described vavuum pump 50 is through condensing unit 60 Exhaust Gas, described condensing unit comprises an airtight chamber, in described airtight chamber, be provided with condenser, the sidewall of condenser bottom is connected with a solvent collection tank 610.Wherein condenser can adopt the mechanism that evaporimeter is connected with compressor, also can adopt the method for heat exchanger to design.In vacuum tank 30, be provided with control circuit and heat up with implementation procedure, in addition, blast pipe 510 is also provided with valve with exhaust tube 40.
(2) manufacturing step of described storage apparatus support comprises:
(1) adopt wet method or the preparation of dry method preimpregnated process to form carbon-fibre reinforced epoxy resin prepreg and glass fiber reinforced epoxy resin prepreg;
(2) the carbon-fibre reinforced epoxy resin prepreg in step (1) and glass fiber reinforced epoxy resin prepreg are tailored into different angles and size and carry out stackedly, make the fiber in neighbouring prepreg at an angle to each other;
As shown in Figure 4, the present invention adopts prepreg multilayer overlapped way at an angle to each other, can greatly improve the bearing capacity of moulded products in all angles.In addition, when multiple fiber prepreg material, use, can better play the effect of mutual supplement with each other's advantages, further improve the performance of storage apparatus, as: because carbon fiber has high specific strength and specific modulus, but shock resistance is poor, and the specific strength of glass fibre and specific modulus are poor compared with carbon fiber, but its shock resistance is better within ultimate elongation, composite overlapping by carbon fiber prepreg and glass fibre prepreg, can realize the mutual supplement with each other's advantages of carbon fiber and glass fibre, and have more cost advantage.
(3) prepreg laminates step (2) being formed have at cover on the core of nylon airbag, roll coated;
(4) pull out core, leave nylon airbag, and nylon airbag one end sealing other end is connected with blowing nozzle, form product to be formed;
(5), after mould inner surface brushing releasing agent, the product to be formed that step (4) is formed is put into mould;
(6) matched moulds locking, delivers to mould on hot-platen and carries out hot-pressing air-blowing forming, makes between stacked prepreg, to fit tightly and be close to mold cavity, to obtain the goods of preliminary dimension;
(7) after cooling and demolding, pull out blowing nozzle and nylon airbag, then after post processing, obtain receiving apparatus support;
(3) manufacturing step of described storage apparatus interlayer supporting member comprises:
(1) adopt wet method or the preparation of dry method preimpregnated process to form carbon-fibre reinforced epoxy resin prepreg and glass fiber reinforced epoxy resin prepreg;
(2) prepare the coated core that rolls of interlayer supporting member, wherein the core of outer frame part adopts foamed material, and the core of thin bar part adopts finer wire;
(3) prepreg in step (1) be tailored into different angles and size and carry out stackedly, making the fiber in neighbouring prepreg at an angle to each other;
(4) the prepreg laminates of preparing in the mandrel surface encapsulation steps (3) of the outer frame part described in (2) and thin bar part is to form respectively the coated product of housing and thin bar;
(5) put into a positioning fixture for pre-setting by rolling the housing that has been coated and the coated product of thin bar, and with soaking tablet, thin bar and housing are connected, to form product to be formed;
(6) product to be formed that step (5) formed are put into mould, locking die, heating extrusion forming;
(7), after the demoulding, deburring, carries out, after necessary post processing, obtaining interlayer supporting member;
(4) at the junction of support and connector coating adhesive sticker, can realize directly closely docking between support and between support and connection fittings, and make its handling easier.
" post processing " of so-called support in the present invention, combined plate, supporting member, connector mainly comprises: the burr processing of goods, polishing, cutting, surfacing, and the technological process such as the application of spraying paint, water transfer printing.
Above-mentioned dry process carbon-fibre reinforced epoxy resin prepreg and glass fiber reinforced epoxy resin prepreg comprise following process steps:
1) continuous carbon fibre or glass fiber strand closely and are equably arranged into certain width in same direction, or employing have carbon fiber or the glass fabric of certain width and make it drawout;
2) at carbon fiber or glass fibre continuous tow or the even epoxy resin coating PUR of fabric face;
3) be tailored into as requested predetermined length and different angles;
Described wet method prepares carbon-fibre reinforced epoxy resin prepreg and glass fiber reinforced epoxy resin prepreg comprises following process steps:
1) by carbon fiber or glass fibre continuous tow or textile impregnation epoxy solution;
2) carbon fiber with epoxy resin or glass fiber strand closely and are equably arranged into certain width to same direction, or by the carbon fiber with epoxy resin or glass fabric drawout;
3) be tailored into as requested predetermined length and different angles;
4) prepreg is heated most of solvent is volatilized in 35~40 ℃ of environment, make the solvent in last prepreg
Below 1%.
Described dry method preimpregnated process Formulaion of epoxy resin comprise A agent and the each constituent mass umber of B agent as follows:
A agent
52 parts of NPES-901 solid epoxies;
20 parts of NPEL-128 liquid epoxies;
1 part of nanometer SiO2;
B agent
20 parts of NPEL-128 liquid epoxies;
6 parts of DDA-5;
1 part of U-24M (production of OMICURE company);
Described resin concocting method comprises:
(1) after first the NPES-901 solid epoxy heating in A agent being melted, then add other component of A agent, stir fully rear cooling;
(2) at room temperature allocate B agent;
(3) before resin uses, A agent is mixed with B agent, fully stir;
Described wet method preimpregnated process Formulaion of epoxy resin comprise A agent and and the each constituent mass umber of B agent as follows:
A agent
30 parts of NPES-901 solid epoxies
25 parts of NPEL-128 liquid epoxies
0.7 part of nanometer SiO2
27 parts of butanone
B agent
0.3 part of nanometer SiO2
3.6 parts of DDA-5
0.6 part of U-24M
12.8 parts of butanone
(1) first by after first the NPES-901 solid epoxy heating in A agent being melted, then add other component of A agent, after stirring fully, be down to room temperature, finally add butanone, again stir;
(2) at room temperature allocate B agent;
(3) before resin uses, A agent is mixed with B agent, fully stir.
Wherein in the present embodiment:
NPES-901 (solid epoxy) selects Guangzhou institute of Kai Lvwei Chemical Co., Ltd. sell goods;
DDA-5(OMICURE board), NPEL-128 liquid epoxies and U-24M(OMICURE board) select institute of Jia Dida Chemical Co., Ltd. of Shenzhen sell goods.
DDA-5 is the dicyandiamide of a ultra micro chalk rating, as the solid-state latent curing agent of epoxy resin.
U-24 is an aromatic series urea, latency promoter when object is solidified for epoxy resin dicyandiamide.In epoxy resin/dicyandiamide formula, add U-24 and can shorten hardening time.
The filling of fiber of the present invention in composite and humidification in different directions, and the application of molding process planning, the mechanical performance of the each parts excellence of storage apparatus and the dimensional stability of goods thereof are jointly guaranteed, in the time of the assembling of storage apparatus, can realize directly closely docking between any two, make whole storage apparatus one integrated mass, avoided steel-tube construction and yoke structure storage apparatus because of part dimension unstable, connect the shortcoming of easily rocking and being out of shape not tight and that produce, reduce simultaneously or avoided the use of screw, the handling that make to receive apparatus are easier.
The foregoing is only preferred embodiment of the present invention, all equalizations of doing according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.

Claims (10)

1. a composite storage apparatus, the building block of described storage apparatus comprises support, combined plate, for the connector of connection bracket or combined plate, for depositing and various supporting members, door and window, handle and the various decorative elements for decorating of suspended item, it is characterized in that: its material of one or more parts of described storage apparatus is fiber reinforced resin based composite material.
2. a kind of composite storage apparatus according to claim 1, described supporting member comprises interlayer supporting member, suspension member and drawer, described interlayer supporting member comprises housing and is arranged at thin bar or the base plate in housing, described housing and thin bar or the base plate structure that is formed in one.
3. a kind of composite storage apparatus according to claim 1, described resin comprises one or more in thermosetting resin and thermoplastic resin, described fiber includes one or more in organic fiber and inorfil.
4. according to claim 3, described thermosetting resin comprises epoxy resin, unsaturated polyester resin, phenolic resins, described thermoplastic's resin comprises polypropylene, nylon resin, polyvinyl chloride, polystyrene, polyimides, ABS, described organic fiber comprises aramid fiber, superhigh molecular weight polyethylene fibers, and described inorfil comprises glass fibre, carbon fiber, basalt fibre, ceramic fibre.
5. a composite storage apparatus manufacturing process, comprises a kind of composite storage apparatus as claimed in claim 2, it is characterized in that, comprises following production stage:
(1), the manufacture of described storage apparatus connector comprises following methods:
(1) production stage of fiber reinforced thermosetting resin composite storage apparatus connector:
1. chopped strand is mixed and puts into resin, high-speed stirred 5~8min;
2. by step, fiber and the resin compound in 1. poured open containers into, and puts into vacuum heater, more than the volatilization temperature of solvent, under the temperature conditions of 10 ℃, vacuumizes heated at constant temperature, to the solvent in this mixture lower than 1%;
3. matched moulds locking after mould inner surface brushing releasing agent, a reserved plug hole;
4. product step being formed in 2. takes out vacuum heater, and under resin melting temperature conditions, is filled mold cavity, then locking die, and reserved several ventholes;
5. mould is placed in vacuum heater and is vacuumized, and with the heating rate of 5 ~ 10 ℃/min, mould is heated up and is heated to above 10 ℃ of the volatilization temperature of solvent;
6. treat that 5. step continues after 20min, with the heating rates of 10 ~ 20 ℃/min, mould is warming up to resin and produces following 10~15 ℃ of the temperature of gelation reaction;
7. after treating that 6. step maintains 30min, the technique solidification temperature by mold heated to resin;
8., after treating that 7. step maintains 45min, stop vacuumizing, cooling, the demoulding, deburring, then carry out, after necessary post processing, obtaining connector goods;
(2) production stage of fiber-reinforced thermoplastic resin composite storage apparatus connector:
1. chopped strand fully mixed and is dried with resin, additive high-speed stirred, then starting injection moulding machine, above mixture is fed to board by hopper;
2. pressurize after locked mode, by injection system, mixture high speed and high pressure under molten condition is injected to mold cavity, after melt is full of die cavity, need to make melt keep certain pressure and maintain a period of time;
3. the cooling rear demoulding, then carry out necessary post processing, obtain connector goods;
(2), the manufacture of described storage apparatus support and combined plate comprises following methods:
(1) the roll-forming production stage of fiber reinforced thermosetting resin composite storage apparatus support:
1. adopt wet method or the preparation of dry method preimpregnated process to form fiber-reinforced resin prepreg;
2. by step, the prepreg in is 1. tailored into different angles and size and carries out stackedly, makes the fiber in neighbouring prepreg at an angle to each other;
3. the prepreg laminates 2. step being formed have at cover on the core of nylon airbag, roll coated;
4. pull out core, leave nylon airbag and nylon airbag one end sealing other end is connected with blowing nozzle, form product to be formed;
5. after mould inner surface brushing releasing agent, the product to be formed that 4. step is formed is put into mould;
6. matched moulds locking, delivers to mould on hot-platen and carries out hot-pressing air-blowing forming, makes between stacked prepreg, to fit tightly and be close to mold cavity, to obtain the goods of preliminary dimension;
7. after cooling and demolding, pull out blowing nozzle and nylon airbag, then after post processing, obtain receiving apparatus support;
(2) the pultrusion production stage of fiber reinforced thermosetting resin composite storage apparatus support and combined plate:
1. deployed resin is poured in the resin storage tank of pultrusion board, and fiber is positioned on fiber frame, the use amount of fiber should the weight ratio in goods calculate according to the thickness in goods cross section and fiber, when two kinds and two or more fiber carry out compound tense, various fibers will be placed in proportion;
2. start pultrusion board, make fiber under the tractive of draw-gear, make fiber obtain the abundant dipping of resin through resin storage tank continuously with certain tension force and speed, and then fiber after preforming tool makes impregnation progressively forms the preform that is approximated to pattern die cavity shape and size, and extrude unnecessary resin, finally again through the mould depanning continuously after moulding that is heating and curing;
3. by the goods of depanning on request length automatically cut; After necessary post processing, obtain support and combined plate goods again;
(3) the pultrusion production stage of fiber-reinforced thermoplastic resin composite storage apparatus support and combined plate:
1. screw extruder is connected with forming machine using drawing and extrusion, the two becomes the direction of 90 degree;
2. by after thermoplastic resin and additive feeding screw extruder, under the effect of screw extruder, the resin compound of melting enters in the resin impregnation tank in forming machine using drawing and extrusion by resin flow channel, and resin impregnation tank temperature remains on the melt temperature of resin;
3. make fiber on fiber frame under the tractive of draw-gear, pass through continuously the resin impregnation tank in forming machine using drawing and extrusion with certain tension force and speed, make fiber obtain the abundant dipping of resin;
4. pass through preforming tool again, make the fiber after impregnation progressively form the preform that is approximated to pattern die cavity shape and size, and extrude unnecessary resin, the temperature of preforming tool remains on the melt temperature of resin;
5. finally by pulling straight goods after supercooling shaper;
6. product is from cooling shaping mould depanning, and length on request cuts automatically, then passes through necessary post processing, obtains support and combined plate goods;
(3), the manufacturing step of described storage apparatus interlayer supporting member comprises:
(1) the fiber-reinforced resin prepreg that adopts wet method or the preparation of dry method preimpregnated process to form;
(2) prepare the coated core that rolls of interlayer supporting member, wherein the core of outer frame part adopts foamed material, and the core of thin bar part adopts finer wire;
(3) prepreg in step (1) be tailored into different angles and size and carry out stackedly, making the fiber in neighbouring prepreg at an angle to each other;
(4) the prepreg laminates of preparing in the mandrel surface encapsulation steps (3) of the outer frame part described in (2) and thin bar part is to form respectively the coated product of housing and thin bar;
(5) put into a positioning fixture for pre-setting by rolling the housing that has been coated and the coated product of thin bar, and thin bar and housing are connected with fiber-reinforced resin prepreg, to form product to be formed;
(6) product to be formed that step (5) formed are put into mould, locking die, heating extrusion forming;
(7), after the demoulding, deburring, carries out, after necessary post processing, obtaining interlayer supporting member;
(4), at the junction coating adhesive sticker of support, combined plate, supporting member and connector, can realize four between directly closely docking, and it is easier to make to receive the handling of apparatus.
6. according to claim 5 composite storage apparatus manufacturing process, described dry method preimpregnated process fiber-reinforced resin prepreg comprises following process steps:
Continuous fiber tow is closely arranged into certain width equably by same direction, or employing has the continuous-filament woven fabric of certain width and makes it drawout;
At continuous fiber tow or the even coating resin PUR of fabric face;
Be tailored into as requested predetermined length and different angles;
Described wet method preimpregnated process fiber-reinforced resin prepreg comprises following process steps:
By continuous fiber tow or textile impregnation resin solution;
Fibre bundle with resin is closely arranged into certain width equably by same direction, or by the continuous-filament woven fabric drawout with resin;
Be tailored into as requested predetermined length and different angles;
(4) prepreg is heated most of solvent is volatilized in 35~40 ℃ of environment, make solvent in last prepreg below 1%.
7. according to a kind of composite storage apparatus manufacturing process described in claim 5 or 6, described resin comprises one or both in epoxy resin and unsaturated polyester resin.
8. a kind of composite storage apparatus manufacturing process according to claim 7, described dry method preimpregnated process Formulaion of epoxy resin comprises A agent and B agent, its each constituent mass umber is as follows:
A agent
50~55 parts of NPES-901 solid epoxies
18~20 parts of NPEL-128 liquid epoxies
Nanometer SiO 21 part;
B agent
18~22 parts of NPEL-128 liquid epoxies
4~6 parts of DDA-5
1 part of U-24M;
The epoxy resin concocting method of described dry method preimpregnated process comprises:
(1) after first the NPES-901 solid epoxy heating in A agent being melted, then add other component of A agent, stir fully rear cooling;
(2) at room temperature allocate B agent;
(3) before resin uses, A agent is mixed with B agent, fully stir;
Described wet method preimpregnated process Formulaion of epoxy resin comprise A agent and and B agent, its each constituent mass umber is as follows:
A agent
26~30 parts of NPES-901 solid epoxies
23~25 parts of NPEL-128 liquid epoxies
0.6 part of nanometer SiO2
27 parts of butanone;
B agent
0.3 part of nanometer SiO2
3.6 parts of DDA-5
0.6 part of U-24M
12~13 parts of butanone;
The epoxy resin concocting method of described wet method preimpregnated process comprises:
(1) after first the NPES-901 solid epoxy heating in A agent being melted, then add other component of A agent, after stirring fully, be down to room temperature, finally add butanone, again stir;
(2) at room temperature allocate B agent;
(3) before resin uses, A agent is mixed with B agent, fully stir.
9. a kind of composite storage apparatus manufacturing process according to claim 5, the vacuum heater that described producd fibers strengthens thermoset ting resin composite storage apparatus connector comprises a vacuum tank, in described vacuum tank, be provided with the heater that can carry out temperature programming, vacuum tank is connected by exhaust tube with a vavuum pump, the blast pipe of described vavuum pump is through a condensing unit Exhaust Gas, described condensing unit comprises an airtight chamber, in described airtight chamber, be provided with condenser, airtight chamber bottom is connected with a solvent collection tank.
10. a kind of composite storage apparatus manufacturing process according to claim 5, the mould that described producd fibers strengthens thermoset ting resin composite storage apparatus connector comprises upper and lower mould, described patrix is provided with the plug hole that the diameter that is communicated with die cavity is 2~3cm, described plug hole is provided with cast stopple, plug hole is evenly distributed with the venthole that the diameter that is communicated with die cavity is 1~2mm beyond the Great Wall, and cast stopple thickness will be more than 2cm.
CN201410062443.3A 2014-02-22 2014-02-22 Composite storage apparatus and manufacturing process thereof Active CN103802324B (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104312081A (en) * 2014-10-14 2015-01-28 荣成复合材料有限公司 Composite material and application thereof
CN104552982A (en) * 2015-01-04 2015-04-29 中国科学院宁波材料技术与工程研究所 Device of multi-mold turnover automatic production line for manufacturing fabric cloth plastic injection molding product
CN107009649A (en) * 2017-05-14 2017-08-04 南通德瑞森复合材料有限公司 A kind of production technology of fiberglass drawing and extruding section bar
CN109177231A (en) * 2018-08-08 2019-01-11 常州市可可环保科技有限公司 A kind of environment-friendly preparation process of composite material
CN109703064A (en) * 2019-03-11 2019-05-03 厦门新旺新材料科技有限公司 A kind of composite material process planning for aircraft target ship stringer
CN111392733A (en) * 2020-06-01 2020-07-10 佛山市加恩新材料有限公司 Aminated silicon dioxide, thermosetting hardening coating for transfer film and preparation method
CN113334797A (en) * 2021-04-20 2021-09-03 上海交通大学 Integrated forming process for train complex-structure special-shaped beam

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102632622A (en) * 2012-05-03 2012-08-15 湖南欧亚碳纤维复合材料有限公司 Fiber-reinforced resin-matrix composite furniture material and preparation method thereof
CN202878694U (en) * 2012-10-23 2013-04-17 厦门市华来科技有限公司 Automatic extruding production line of PVC (Poly Vinyl Chloride) pipe
CN202959458U (en) * 2012-12-21 2013-06-05 叶伟军 Multifunctional solid wood combination wardrobe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102632622A (en) * 2012-05-03 2012-08-15 湖南欧亚碳纤维复合材料有限公司 Fiber-reinforced resin-matrix composite furniture material and preparation method thereof
CN202878694U (en) * 2012-10-23 2013-04-17 厦门市华来科技有限公司 Automatic extruding production line of PVC (Poly Vinyl Chloride) pipe
CN202959458U (en) * 2012-12-21 2013-06-05 叶伟军 Multifunctional solid wood combination wardrobe

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104312081A (en) * 2014-10-14 2015-01-28 荣成复合材料有限公司 Composite material and application thereof
CN104552982A (en) * 2015-01-04 2015-04-29 中国科学院宁波材料技术与工程研究所 Device of multi-mold turnover automatic production line for manufacturing fabric cloth plastic injection molding product
CN107009649A (en) * 2017-05-14 2017-08-04 南通德瑞森复合材料有限公司 A kind of production technology of fiberglass drawing and extruding section bar
CN109177231A (en) * 2018-08-08 2019-01-11 常州市可可环保科技有限公司 A kind of environment-friendly preparation process of composite material
CN109703064A (en) * 2019-03-11 2019-05-03 厦门新旺新材料科技有限公司 A kind of composite material process planning for aircraft target ship stringer
CN111392733A (en) * 2020-06-01 2020-07-10 佛山市加恩新材料有限公司 Aminated silicon dioxide, thermosetting hardening coating for transfer film and preparation method
CN113334797A (en) * 2021-04-20 2021-09-03 上海交通大学 Integrated forming process for train complex-structure special-shaped beam

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