CN102990942B - A kind of vacuum infusion molding method of p-aramid fiber composite product - Google Patents

A kind of vacuum infusion molding method of p-aramid fiber composite product Download PDF

Info

Publication number
CN102990942B
CN102990942B CN201210568332.0A CN201210568332A CN102990942B CN 102990942 B CN102990942 B CN 102990942B CN 201210568332 A CN201210568332 A CN 201210568332A CN 102990942 B CN102990942 B CN 102990942B
Authority
CN
China
Prior art keywords
aramid fiber
vacuum
resin adhesive
layer
cloth
Prior art date
Application number
CN201210568332.0A
Other languages
Chinese (zh)
Other versions
CN102990942A (en
Inventor
马千里
王双成
许德胜
姜茂忠
Original Assignee
烟台泰和新材料股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 烟台泰和新材料股份有限公司 filed Critical 烟台泰和新材料股份有限公司
Priority to CN201210568332.0A priority Critical patent/CN102990942B/en
Publication of CN102990942A publication Critical patent/CN102990942A/en
Application granted granted Critical
Publication of CN102990942B publication Critical patent/CN102990942B/en

Links

Abstract

The present invention relates to a kind of vacuum infusion molding method of p-aramid fiber composite product, specifically comprise the steps: that (1) cleaning mould (2) brushing releasing agent (3) are prepared glue clothing layer Resin adhesive, upper layer Resin adhesive and perfusion Resin adhesive (4) respectively and made glue clothing layer (5) making upper layer (6) making enhancement layer, lay priming by vacuum device comprising para-aramid fiber cloth (7) and seal fixing (12) aftertreatment of (8) priming by vacuum (9) product solidification (10) demoulding (11) reinforcing member and web member. Adopt p-aramid fiber matrix material prepared by vacuum infusion molding method provided by the invention, its production method is simple, can effectively improve p-aramid fiber composite product ultra-violet resistance energy, make p-aramid fiber and resin have good cohesiveness simultaneously, make matrix material obtain stable, good every performance.

Description

A kind of vacuum infusion molding method of p-aramid fiber composite product

Technical field

The present invention relates to the preparation method of a kind of p-aramid fiber composite product, particularly relate to a kind of vacuum infusion molding method of p-aramid fiber composite product.

Background technology

In existing high-performance fiber, p-aramid fiber is one of best organic fibre of over-all properties, its outstanding performance characteristics is high-strength, high mould and high temperature resistant, also have wear-resisting simultaneously, fire-retardant, resistance to chemical attack, insulation, prevent cutting, antifatigue, pliable and tough, the performances such as good stability of the dimension, therefore the diamond that p-aramid fiber matrix material is described as on the material imperial crown of the whole world, rank one of three big high performance materials, its industrialization process is to China's national defense construction, leading type industrial project is (such as large aircraft, bullet train, shipbuilding, electric power, electronic information, building materials etc.) there is most important impact. at military industry field, p-aramid fiber matrix material is widely used in aircraft, naval vessel, submarine, tank, guided missile, the high performance structural member of radar and extraordinary electronics. in civilian field, it is mainly used in the high performance structural member of space flight, aviation, bullet train and automobile, track traffic, nuclear power, water power and the medium-and-large-sized motor of electricity power engineering, the high-end insulating material of transformer, high-performance heat-insulating flame-retardant material for building, high side circuitry plate and printing, medical material etc. in addition, the application form of p-aramid fiber is also constantly opened up, such as the high impact properties of overseas utilization p-aramid fiber matrix material, the p-aramid fiber advanced composite material product complementary mutually with other fortifying fibre is developed in field of compound material, the resistance to impact shock of matrix material is made to be equivalent to the several times of conventional carbon fiber-reinforced thermosetting resin, and thermotolerance, resistance to chemical reagents and creep resistance are increased, and shaping cycle shortening.

Along with continually developing of product innovation, the novelty teabag of p-aramid fiber is also constantly opened up, such as the high impact properties of overseas utilization p-aramid fiber matrix material, the p-aramid fiber advanced composite material product complementary mutually with other fortifying fibre is developed in field of compound material, the resistance to impact shock of matrix material is made to be equivalent to the several times of conventional carbon fiber-reinforced thermosetting resin, and thermotolerance, resistance to chemical reagents and creep resistance are increased, and shaping cycle shortens, application target is flyer and aircraft components, deadweight simultaneously is the technical indicator that flyer does not have juice teacher and is concerned about most except security, someone claims flyer minimizing 1g quality to be just equivalent to save 1g gold. thus the fragrant synthetic fibre composite reinforced on polymer that density is very little has been used as the structured material of aerospace, rocket and aircraft, is used for alleviating deadweight, increases workload, saves a large amount of power fuel. the parts such as the housing of Boeing aircraft, interior trim part and seat all employ p-aramid fiber. p-aramid fiber matrix material (AFRP) also can be widely used in the parts such as the transmission shaft of light truck and car, chassis, guard, seat skeleton, car door, panel, water tank.

In recent years, along with the cry of low-carbon economy increases day by day, p-aramid fiber generates electricity at wind-force, and the application in energy storage material and energy-saving and emission-reduction field will be paid attention to. Virtue synthetic fibre and the high-strength feature of composite material light thereof so that it is can effectively alleviate the weight, the particularly field such as automobile, boats and ships of component when applying, play obvious effects of energy saving and emission reduction. At present, the preparation many places of p-aramid fiber matrix material, in the research stage, really carry out the report phoenix feathers and unicorn horns of industrialization production, still do not adopt vacuum infusion method to produce the report of p-aramid fiber matrix material.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of vacuum infusion molding method of p-aramid fiber matrix material, and prepared p-aramid fiber matrix material can reach the excellent properties of bonds well between uvioresistant, material.

In order to solve the defect that prior art exists, at least achieving the above object, the present invention provides a kind of vacuum infusion molding method of p-aramid fiber matrix material, comprises the steps:

(1) mould is cleared up;

(2) brushing releasing agent;

(3) glue clothing layer Resin adhesive, upper layer Resin adhesive and perfusion Resin adhesive is prepared respectively;

(4) glue clothing layer is made;

(5) upper layer is made;

(6) enhancement layer is made, comprising para-aramid fiber cloth;

(7) lay priming by vacuum device and seal;

(8) priming by vacuum;

(9) product solidification;

(10) demoulding;

(11) reinforcing member and web member is fixing;

(12) aftertreatment.

The vacuum infusion molding method of p-aramid fiber composite product of the present invention, wherein said upper layer adopts the glass chopped strand mats being coated with UV light absorber or ultraviolet paint to make.

The vacuum infusion molding method of p-aramid fiber composite product of the present invention, wherein said mould is stainless steel mould, and described releasing agent is polyvinyl alcohol.

The vacuum infusion molding method of p-aramid fiber composite product of the present invention, wherein said glue clothing layer Resin adhesive adopts 100 parts of unsaturated polyester resins, 2 parts of initiator methylethyl ketone peroxides, 1 ~ 4 part of promotor cobalt naphthenate or naphthoic acid cobalt, 2.5 ~ 3.5 parts of anti-caking agent aerosils, 2 ~ 3 parts of defoamers, and 8 ~ 10 parts of pigment paste are formulated.

The vacuum infusion molding method of p-aramid fiber composite product of the present invention, wherein said upper layer Resin adhesive and perfusion Resin adhesive adopt 100 parts of unsaturated polyester resins or epoxy resin, 5 ~ 10 parts of thinner acetone, 1 ~ 3 part of initiator methylethyl ketone peroxide, 4 ~ 6 parts formulated by mass ratio to be the massfraction that the xylidine of 1:1 and benzoyl peroxide are made into the be promotor styrene solution of 8% ~ 10%, 10 ~ 20 parts of talcum powder as filler.

The vacuum infusion molding method of p-aramid fiber composite product of the present invention, wherein said enhancement layer is selected para-aramid fiber cloth, glass chopped strand mats and Shuan Liang to add fixing apparatus and is made, and the making method of described enhancement layer comprises the steps:

A. make two beam and add fixing apparatus;

B. select suitable para-aramid fiber cloth, glass chopped strand mats, cut out;

C. described para-aramid fiber cloth is boiled 20min in the water of 80 ~ 90 DEG C;

D. described para-aramid fiber cloth and glass chopped strand mats is laid successively to setting thickness;

E. on described para-aramid fiber cloth and glass chopped strand mats, place described pair of beam add fixing apparatus.

The vacuum infusion molding method of p-aramid fiber composite product of the present invention, the wherein said pair of beam adds and is filled with sandwich material between two beams of fixing apparatus.

The vacuum infusion molding method of p-aramid fiber composite product of the present invention, wherein said pair of beam adds fixing apparatus and adopts wet process forming method to be made, and making method is: first paste interior adventitia, is combined by described interior adventitia; Select the selection of suitable foam materials; Under temperature is 20 ~ 30 DEG C of conditions, in die cavity, pour into hard polyurethane foams porous plastics; Last foamed solidification the demoulding form goods.

The vacuum infusion molding method of p-aramid fiber composite product of the present invention, wherein said priming by vacuum device comprises release cloth, flow-guiding cloth and vacuum bag, described release cloth is laid on described enhancement layer, lays described flow-guiding cloth and described vacuum bag successively on described release cloth upper strata.

The vacuum infusion molding method of p-aramid fiber composite product of the present invention, obtained former and the formpiston of described p-aramid fiber composite product respectively to step (10) by described step (1), pasting fixing described reinforcing member and described web member between described former and the enhancement layer of formpiston, the material of described reinforcing member is PVC foam, polyurethane foam or metallic substance.

The useful effect of the present invention: the invention difference from existing technology is that vacuum infusion molding method is applied to the production of p-aramid fiber matrix material by the present invention, owing to vacuum infusion molding is closed moulding, therefore in moulding process, vinylbenzene volatilization is few, improve Working environment, simplify method operation. Vacuum aided can fully eliminate bubble simultaneously, reduces the porosity of goods, can effectively control the gel content of product, constant product quality height. Vacuum infusion molding method is considered to that a kind of efficiency height, cost are low, the measured production method of matter. Adopt p-aramid fiber process for producing composite materials flow process prepared by vacuum infusion molding method provided by the invention simple, can effectively improve p-aramid fiber composite product ultra-violet resistance can vacuum infusion molding method, make p-aramid fiber and resin have good cohesiveness simultaneously, make matrix material obtain stable, good every performance.

Meanwhile, in the vacuum infusion molding method steps (2) of p-aramid fiber matrix material of the present invention, the releasing agent prepared has the following advantages: stripping result is good; Price is cheap; Easily preparation; Can preserve for a long time; Brushing is convenient; Can wash by water; Levelling property, good film-forming property; Product surface is bright and clean. Enhancement layer in step (6) comprises para-aramid fiber cloth, glass chopped strand mats and Shuan Liang and adds fixing apparatus, and consolidation effect is good.

Below in conjunction with accompanying drawing, the vacuum infusion molding method of p-aramid fiber matrix material of the present invention is described further.

Accompanying drawing explanation

Fig. 1 is the laminate structure schematic diagram in p-aramid fiber composite product making processes of the present invention;

Fig. 2 is the structural representation of p-aramid fiber composite product of the present invention in vacuum infusion process;

Fig. 3 is the vacuum infusion method schema of p-aramid fiber composite product of the present invention;

Fig. 4 is the wet process forming method schema that of the present invention pair of beam adds fixing apparatus.

Embodiment

As depicted in figs. 1 and 2, the vacuum infusion method of p-aramid fiber composite product of the present invention is with flexible vacuum bag film coated, sealing fiber reinforced material in one side rigid die, then under negative pressure of vacuum, get rid of the gas in die cavity, utilize the flowing of resin, infiltration realizes the dipping of fiber and fabric thereof, and under room temperature or heating condition a kind of method method of curing molding. Fig. 3 is the schema of the method for the invention, and described method comprises the steps:

One, mould 1 is cleared up

The material making mould 1 has multiple, should be selected according to concrete product size size, shape and use number of times. Present method adopts stainless steel mould 1. If mould 1 is made up of polylith, then need to be assembled in together, it should be noted that assembling location, can not be excessive to mould gap, can seal with adhesive tape if desired, prevent gummosis mucous membrane, relevant knock-outs will to be filled, and top block is put flat.

Mould 1 is stained with the residual glue that last time, the demoulding was left over, carefully roots out with flat chisel, can not damaging surface, polyvinyl alcohol (PVA) releasing agent can wash by water, and then dries stand-by.

Two, brushing releasing agent

The releasing agent that the present invention adopts is PVA(polyvinyl alcohol) releasing agent. PVA releasing agent is that the water of PVA or ethanolic soln are formulated, can on mould 1 film forming.

When carrying out the preparation of releasing agent, first water is heated to 60 ~ 70 DEG C, adds PVA powder while stirring, and insulated and stirred is to dissolving completely. Cool to room temperature, then carry out stir and drip at a slow speed and add ethanol, prevent lump. Filter after completing, except degranulation and impurity, finally add proper quantity of defoaming agent, dress.

When carrying out the brushing of releasing agent, with hairbrush or polyurethane foams block dipping PVA releasing agent, it is noted that can not suck air, produce bubble, then in the evenly brushing of mould 1 surface. With the dynamics of hand control brushing thickness, brushing is how not good, brushes thickness and is preferably 0.2mm, can not holiday, current mark can not be produced and gather in the trench. Prevent hair and winged insect from falling on surface during brushing. Dry about 30min after having brushed, can use after complete drying and forming-film. But time of drying is longer when it is cold, about 0.5 ~ 1 hour. Brushing is it is noted that evenly, brushes and improper has small bubbles.

If the PVA releasing agent shelf-time is excessively long, when viscosity increases, appropriate water or alcohol dilution use again can be added, use again can be filtered if any impurity, not affect effect.

If room temperature is low, when time of drying is long, available blower is air-dry, but prevents dust from falling into. Summer is brushing releasing agent under light, have on film hood, prevents mosquito from falling into.

Namely the method removing releasing agent cleans with tap water, necessarily avoids hindering mould 1 with flat chisel cleaning in order to avoid drawing.

Three, Resin adhesive is prepared

1, Resin adhesive I: adopt 100 parts of unsaturated polyester resins, 2 parts of initiator methylethyl ketone peroxides, 1 ~ 4 part of promotor cobalt naphthenate or naphthoic acid cobalt, 2.5 ~ 3.5 parts of anti-caking agent aerosils, 2 ~ 3 parts of defoamers, 8 ~ 10 parts of pigment paste preparations. When preparing Resin adhesive I and add pigment paste, the materials of a set of product or one batch of product once should be allotted, in order to avoid occurring that color is inconsistent because repeatedly preparing. Described part number is mass fraction.

2, Resin adhesive II: adopt 100 parts of unsaturated polyester resins or epoxy resin, 5 ~ 10 parts of thinner acetone, 1 ~ 3 part of initiator methylethyl ketone peroxide, 4 ~ 6 parts by mass ratio be the xylidine of 1:1 and benzoyl peroxide be made into 8% ~ 10% promotor styrene solution, 10 ~ 20 parts of talcum powder as filler prepare. Described part number is mass fraction.

3, glue is joined

Join glue instrument and comprise plastic tank, plastic tub, plastic cup, graduated cylinder, stirring rod, agitator etc. During preparation glue liquid, the quantity of preparation by product consumption and the consumption preparation that once pastes, on a small quantity with basin, manual stirring; A large amount of Resin adhesives then needs with drum, and agitator stirs and can use. After joining glue every time, 10 ~ 20 grams should be taken out and do sample gelling experiment, observe its gelation time, prevent solidification too fast or excessively slow.

When joining glue, promotor, solidifying agent are metered into graduated cylinder respectively, and once can only add one, stir after evenly and can add the 2nd kind, otherwise there will be two kinds of auxiliary materials and react to each other, and burning and blast occur. If glue there being filler add, then need frequent stirring, in order to avoid filler precipitation.

The consumption of promotor regulates from 1% ~ 4% voluntarily with the change of weather, can add 6% at most when it is cold.

Solidifying agent can only add in proportion, can not arbitrarily increase and decrease.

The epoxy resin usage period is short, prepares Resin adhesive according to epoxy resin, once can only prepare on a small quantity.

Four, glue clothing layer 2 is made

The quality of glue clothing layer 2 directly affects the visual appearance of product, therefore, selects high-quality gel coating resin and pigment paste and adopts correct brushing method to be very crucial.

Glue clothing layer 2 adopts Resin adhesive I.

The squeegee process that the present invention adopts evenly is brushed the Resin adhesive I prepared on mould 1 surface with hairbrush, and the glue consumption of Resin adhesive I is 500g/m2, namely glue clothing thickness is at 0.4 ~ 0.5mm, and glue clothing self-vulcanizing 1 hour, reaches tactile dry rear stand-by. Generally adopting glass reinforced plastic special hairbrush during brushing, common hairbrush easily falls hair, to be tried one's best evenly during brushing, and hairbrush should not be brushed back and forth repeatedly, can not holiday, trace can not be produced, can not gather. This kind of method is adopted at home in a large number, then little abroad. Uneven because brushing, efficiency is low. But to some complex structures, the goods not easily brushed still must adopt.

Five, upper layer 3 is made

The upper layer 3 of p-aramid fiber matrix material makes by fiberglass surfacing mat laying. Upper layer 3 can prevent glue clothing from appearing cloth line, makes surface form resin-rich layer, thus the resistance to seepage of product, erosion resistance are improved further.

Making upper layer 3 and adopt Resin adhesive II and fiberglass surfacing mat, described fiberglass surfacing mat is that glass chopped strand mats is cut out, laid.

When making upper layer 3, owing to p-aramid fiber/epoxy composite material often uses in an atmosphere, the effect of sunlight especially UV-light can make the mechanical property of matrix material that change to a certain degree occurs. Ultraviolet luminous energy causes many chemical reactions, makes macromolecular material that oxidation and degraded occur, and these reactions are often chain reactions, and accelerates by adding of condition such as temperature, oxygen, humidity. Consequently, it is desirable to add UV light absorber in Resin adhesive II, or paint in the outer UV resistant that is coated with of upper layer 3, thus extend the work-ing life of p-aramid fiber/epoxy composite material.

When carrying out the making of upper layer 3, first glass chopped strand mats being pressed mould 1 surface size cutting, surface substance is 30g/m2Or 50g/m2Short cut felt as well, be layered on glue clothing face, with hair roller gluing, then with deaeration roller deaeration, strictly be controlled not have bubble. If having the dell or dead angle that not easily make, usable resins putty is first filled and led up. The glue content of upper layer 3 should control 85% ~ 95%.

Six, enhancement layer 4 is made

Enhancement layer 4 is the important bearing bed of composite product, plays a part to ensure structure and the intensity of product. Enhancement layer 4 comprises para-aramid fiber cloth, glass chopped strand mats and Shuan Liang and adds fixing apparatus 10, and the described pair of beam adds and be filled with sandwich material between two beams of fixing apparatus 10. Can according to the size of p-aramid fiber composite product, shape, stressing conditions, the two beam of design adds fixing apparatus 10. Para-aramid fiber cloth and glass chopped strand mats to selecting carries out adaptability cutting as required, if adding fixing apparatus 10 for coated pair of beam, adding fixing apparatus 10 with two beam and adapting, if for being directly layed on the upper layer 3 of mould 1, adapting with mould 1.

Para-aramid fiber cloth is with to be boiled 20min in the water of 80 ~ 90 DEG C before. After p-aramid fiber carries out surface treatment, eliminate the oil stain of fiber surface herein, add the bonding force of aramid fiber and resin, it may be achieved the bonds well of p-aramid fiber and Resin adhesive so that it is obtain stable, good every performance.

The concrete making step of enhancement layer 4 is as follows:

1. make two beam and add fixing apparatus 10;

It is " II " shape that described pair of beam adds fixing apparatus 10 profile, employing wet process forming method is made, described wet process forming method first pastes interior adventitia, again the combination of interior adventitia is got up, then in die cavity, pour into hard polyurethane foams porous plastics, foamed solidification, namely finally demould becomes foam layer product. Described pair of beam adds fixing apparatus wet process forming method flow process as shown in Figure 4, and described method is specially: first paste interior adventitia, is combined by described interior adventitia; Select the selection of suitable foam materials; Under temperature is 20 ~ 30 DEG C of conditions, in die cavity, pour into hard polyurethane foams porous plastics; Last foamed solidification the demoulding form goods. Wherein, it should be noted that have following some:

A. the selection of foam material

Hard polyurethane foams item kind is a lot, and general producer is all made into A, B two portions and sells, and wherein component A is polymeric polyisocyanate class, and B component is the mixture of polyethers or subsidiary material.

In subsidiary material, comprise whipping agent F-11, pore forming material silicone oil, the multiple material-mix such as solidifying agent triethylamine etc. and fire retardant and become. The kind of isocyanic ester and polyethers is different, and made foamy body is also different.

Wherein the consumption of F-11 determines the density of foam. So the selection of foam should be ordered to producer according to the technical requirements of product. B. the consumption of foam and the speed of perfusion is poured into

When pouring into foaming machine, general proportioning is A:B=1:1.

The total consumption of foam calculates with the volumeter of the density of foam, mould 1 cavity, consumption cross conference cause spilling or swollen bad mould 1, very few there will be hollow or lack material. Due to the lather quickness of foam material and the relation of curing speed, rate of flooding should be grasped suitably, avoids occurring that foam is heartburn or avalanche phenomenon.

C. the in situ temperature poured into

Should at 20 ~ 30 DEG C preferably, because temperature is too low, it is difficult to bubble, need to carry out mould 1 or feed liquid preheating, in the too high feed liquid of temperature, F-11 can volatilization automatically.

D. the requirement of mould 1

Produce very big pressure because of during foaming, so requiring that mould 1 thickeies, and having enough rigidity, should have location, assembling mechanism simultaneously. Coating release agent answered by mould 1.

E. the design of perfusing hole, venting hole

Perfusing hole should allow feed liquid from pour into bottom, bottom bubble. Air outlet, the material mouth that overflows is located at top.

In a word, it is noted that above main points so that it is uniform in foaming, interlaminar bonding is firm, does not lack material, not hollow and just can make satisfactory foam layer product.

2. select suitable para-aramid fiber cloth, glass chopped strand mats, cut out;

The material of enhancement layer 4 should be chosen in advance according to the technical requirements of product. Glass chopped strand mats used, the type of p-aramid fiber woven roving, the trade mark of thickness and resin used, kind etc. all strictly to be checked before pasting, in case material is wrong, cause unnecessary loss.

A. cut out cloth platform and need the sanction cloth platform of a proper area, p-aramid fiber cloth is layered on table top take measurements cutting. The width of para-aramid fiber fabric is 1.7m, so platform width is that 2.0m is more suitable. Table top is put on dimension line. Yardage roll can be placed on cut out cloth frame rotates use more convenient.

B. cloth instrument mainly ruler, 526-H virtue synthetic fibre scissors and sanction cloth cutter is cut out. Ruler can with Steel Ruler, wooden rule, box chi. Woollen goods scissors, common scissors can be adopted for glass chopped strand mats, the 526-H virtue synthetic fibre scissors of Japan's manufacture can be adopted for p-aramid fiber cloth.

C. cut out cloth cut out should first check before cloth short cut felt, whether the specification of woven roving, thickness meet the requirements; Observe whether surface has greasy dirt, foreign material, unequal; Check whether, by feel, the moisture absorption that absorbs water, if moisture absorption, need to dry and use again.

D. cutting is according to area shape, has set size, cutting on platform. Selvedge is crossed and is dismissed obstinately. The available scissors of complex-shaped or monolithic. The pieces of cloth that shape is single, quantity is big, particularly short cut felt sheet, can be stacked by felt, once cut several layers with cut-off knife.

E. the cloth of numbering different size, can number and place respectively, in order to avoid confusion reigned when pasting.

3. described para-aramid fiber cloth is boiled 20min in the water of 80 ~ 90 DEG C; After p-aramid fiber carries out surface treatment, eliminate the oil stain of fiber surface herein, add the bonding force of aramid fiber and resin, it may be achieved the bonds well of p-aramid fiber and Resin adhesive so that it is obtain stable, good every performance.

4. described para-aramid fiber cloth and glass chopped strand mats is laid successively to setting thickness;

Described glass chopped strand mats and para-aramid fiber cloth are in layer routed on described upper layer 3, successively repeat until need thickness. If when running into bent angle or shaggy block, available scissors, by cloth clip, then flattens with hairbrush. If when mould 1 two or more than two cloth of bigger palpus or felt overlap, 5cm should be overlapped. Meanwhile, overlap joint between every layer should stagger as much as possible. The consumption mass ratio of para-aramid fiber cloth and Resin adhesive II is 1:1 ~ 1:1.5. The consumption mass ratio of glass chopped strand mats and Resin adhesive II is 1:1.9 ~ 1:2.9.

5. on described para-aramid fiber cloth and glass chopped strand mats, place described pair of beam add fixing apparatus.

Seven, the laying of priming by vacuum device and sealing

First spreading release cloth 5, be then flow-guiding cloth 6, be finally vacuum bag 7, described flow-guiding cloth also comprises thrust-augmenting nozzle or water conservancy diversion net for 6 times, plays drainage, and described enhancement layer 4 is infiltrated evenly. Before the vacuum bag 7 that closes, to carefully consider the trend of Resin adhesive and vacuum-pumping pipeline, otherwise some places resin can cannot infiltrate, adopt sealed strip to be sealed by described vacuum bag 7. It is very careful during laying, in order to avoid some sharp objects puncture vacuum bag 7. Described priming by vacuum device is connected with other equipment by pipe connecting 8, and one end connects the bucket 12 that perfusion Resin adhesive is housed, and the other end connects vacuum pump.

Eight, the priming by vacuum of Resin adhesive 13

Resin adhesive 13 heats in container, stirs 3 ~ 4h, de-bubbled under 680-700Pa vacuum tightness; Vacuumize in mould 1 die cavity, take out the bubble in most Resin adhesive and the moisture in fiber parison, in die cavity, during dipping keep the vacuum tightness of 40-42Pa; Before injection, the vacuum tightness in die cavity is dropped to the vacuum tightness that 130-140Pa(is not more than de-bubbled by vacuum flush system), and remain to always and fill die cavity, with the pressure of 2.1 ~ 2.7MPa, resin 13 is injected die cavity; Die cavity is full of final vacuum degree and disappears, the urethane cure in 101kPa lower impressions.

Nine, the solidification of product

Taking steam as medium, heat energy is transmitted to resin 13 li through mould 1 backing, shell, profile, and Resin adhesive 13 is solidified. Owing to the thermal conductivity of metal die 1 used is better, therefore rate of heating is very fast. So, p-aramid fiber composite product requires to solidify at room temperature 270 ~ 280 DEG C, self-vulcanizing 20 ~ 24h.

Ten, the demoulding

The demoulding is a crucial procedure, and the quality of the demoulding is directly connected to the quality of product and effective utilization of mould 1. Certainly, the quality of the demoulding also depends on the design of mould 1; The surface smoothness of mould 1; Releasing agent and painting brushing effects; Depend on the technology of the demoulding in addition.

Present method adopts qi exhaustion, being contained in advance on mould 1 by Special air nozzle, valve is connected with air pump by sebific duct, passes through valve during the demoulding, by the high pressure gas press-in die 1 of 390 ~ 680kPa with in the adhesive surface gap of product, along with product can be ejected by constantly entering of high pressure gas. Pore place can be beaten gently with skin hammer when suppressing, gas is entered rapidly. This release method is very effective to big area shell product.

Must not firmly beat mould 1 with hard hammer during the demoulding, split because easily the glue clothing layer 2 of product and mould 1 being shaken.

11, reinforcing member and web member is fixing

In p-aramid fiber composite product, particularly massive article needs to add various skeleton, to improve the ability by power. In addition, also having many web members to need to be embedded in composite product, burying in advance of these parts all pastes after enhancement layer 4.

According to the size of composite product, shape, product stressing conditions, the reinforcing member of design goods, material can be PVC foam, polyurethane foam or metallic substance. Pass through above-mentioned steps, former and the formpiston of product is obtained respectively from the cleaning of mould 1 to the demoulding, fixing described reinforcing member and web member is pasted between described former and formpiston, the interior face that reinforcing member and web member are bonded at before pasting the enhancement layer 4 of described former and formpiston with Resin adhesive putty, carries out coated after cured again; Metal web member, it is noted that the location in connection hole, if any screw, then should be closed, open after solidification again, prevent glue from flowing to screw.

12, aftertreatment

(1) trimming: p-aramid fiber composite product needs burr to excise. After product stripping also fixes described reinforcing member and web member, with diamond wheel along line cutting, add water during cutting and can make otch smoothly, minimizing dust pollution. But this kind of method must reserve process redundancy in advance, the technology of cutting personnel also wants skilled, otherwise easily cuts bad by product.

(2) process: p-aramid fiber composite product all needs to process. I.e. edging, deburring, cut-out, perforate etc.

1. the burr of hair side all can be destroyed by edging and deburring with polishing machine, is tied by the blob of viscose of projection, finishing trimming, chamfering etc.

2. cutting can with hacksaw along glue clothing face firmly saw open, but saw kerf is not bright and clean, and effect is not good. Most employing toothless saw (also claims cloud stone saw), adds Water Cutting, not only cutting efficiency height, and otch is bright and clean.

3. perforate: square hole can cut with toothless saw. The perforate more complicated of circular hole, aperture with electric hand drill, can be opened with normal drill bit or diamond head, and diameter adopts this method at the Kong Douke of below 20mm. Should from glue clothing surface during punching, during beginning, aperture with little drill bit perforate is smooth, effective.

Middle shape hole, diameter in the hole of 30 ~ 100mm, available hole making drill. Thin-wall product metal hole making drill, thick wall then needs to use diamond hole making drill, but this kind of hole making drill need to realize ordering by size.

Large-scale circular hole, diameter, in the perforate of more than 100mm, is first beaten many apertures with little drill bit along circle line, is then destroyed by plate in circle, then polished by circular hole wall with little emery wheel grinding-head.

13, check and accept

The acceptance conditions of each product is different, but all should comprise outward appearance, size 2 each side. So, acceptance conditions should be formulated by these 2 aspects.

(1) appearance surfaces is that the products appearance of glue clothing should reach: any surface finish, smooth, uniform color, flawless, inclusion-free, no wrinkle, bubble-free etc.

(2) size, weight, physical dimension, gauge, distortion size, bore size, skeleton size, check and accept by drawing tolerance. Monomer weight, accessory weight, overall weight are checked and accepted on request.

Embodiment one

A vacuum infusion molding method for p-aramid fiber composite product, Fig. 1 and Fig. 2 is the laminate structure schematic diagram of p-aramid fiber composite product of the present invention in vacuum infusion process, and as shown in Figure 3, described method comprises the steps:

One, mould 1 is cleared up

Adopting the combined mould 1 of stainless steel, comprise relative former and formpiston, prepared p-aramid fiber composite product is rectangle platy. By the residual glue that the last time being stained with on mould 1, the demoulding was left over, carefully root out with flat chisel, can not damaging surface; Clean releasing agent with water, dry stand-by.

Two, brushing releasing agent

5 parts of polyvinyl alcohol (low molecule powderies are added after 45 parts of water are heated to 60 ~ 70 DEG C, molecular-weight average is 16000��20000), insulated and stirred is to dissolving rear cool to room temperature completely, then agitation and dropping 50 parts of ethanol, filter after completing, except degranulation and impurity. Finally add defoamer 1 part.

Evenly brush, on stainless steel mould 1 surface, the releasing agent prepared with hairbrush, after having brushed, dry 30min, stand-by after drying and forming-film.

Three, Resin adhesive is prepared

1, Resin adhesive I: adopt 100 parts of unsaturated polyester resins, 2 parts of initiator methylethyl ketone peroxides, 1 ~ 4 part of promotor cobalt naphthenate or naphthoic acid cobalt, 2.5 ~ 3.5 parts of anti-caking agent aerosils, 2 ~ 3 parts of defoamers, 8 ~ 10 parts of pigment paste preparations. When preparing Resin adhesive I and add pigment paste, the materials of a set of product or one batch of product once should be allotted, in order to avoid occurring that color is inconsistent because repeatedly preparing. Described part number is mass fraction.

2, Resin adhesive II: adopt 100 parts of unsaturated polyester resins or epoxy resin, 5 ~ 10 parts of thinner acetone, 1 ~ 3 part of initiator methylethyl ketone peroxide, 4 ~ 6 parts by mass ratio be the xylidine of 1:1 and benzoyl peroxide be made into 8% ~ 10% promotor styrene solution, 10 ~ 20 parts of talcum powder as filler prepare. Described part number is mass fraction.

3, glue is joined

Join glue instrument and comprise plastic tank, plastic tub, plastic cup, graduated cylinder, stirring rod, agitator. The plastic tub preparation Resin adhesive I adopting volume less, craft stirring rod stirs; The plastic tank preparation Resin adhesive II adopting volume bigger, agitator stirs. After joining glue, 10 grams should be taken out and do sample gelling experiment, observe its gelation time, prevent solidification too fast or excessively slow.

The promotor measuring corresponding part number with graduated cylinder adds the Resin adhesive after stirring; Stir after evenly, then the solidifying agent of consumption statistic corresponding scores adds in Resin adhesive; Stir after evenly, add talcum powder, hereafter keep the whipped state of Resin adhesive.

Four, glue clothing layer 2 is made

With the special hairbrush of glass reinforced plastic, the Resin adhesive I prepared evenly being brushed the surface at mould 1 former and formpiston, the glue consumption of Resin adhesive I is 500g/m2, namely glue clothing thickness is at 0.4 ~ 0.5mm, and glue clothing self-vulcanizing 1 hour, reaches tactile dry rear stand-by. Five, upper layer 3 is made

1, first in the Resin adhesive II prepared, UV light absorber is added. The UV light absorber herein adopted is the UV light absorber UV-320 photostabilizer that Nanjing produces through Tian Wei Chemical Co., Ltd.. Stir after evenly stand-by, and continue to keep the whipped state of glue liquid.

2, the fiberglass surfacing mat adapted with mould 1 surface size is layered on glue clothing layer 2, with hair roller, the Resin adhesive II of modulation in step 1 is evenly coated on the felt of surface, then with deaeration roller deaeration; With Resin adhesive, the dell not easily made or dead angle are filled and led up. Surface felt consumption is substance 30g/m2, glue content is 85%.

Six, enhancement layer 4 is made

Described enhancement layer 4 comprises fiber reinforcing layer 9 and Shuan Liang adds fixing apparatus 10, and described fiber reinforcing layer 9 comprises glass chopped strand mats and para-aramid fiber cloth, and the concrete making step of described enhancement layer 4 is as follows:

1. make two beam and add fixing apparatus 10;

It is " II " shape that described pair of beam adds fixing apparatus 10 profile, employing wet process forming method is made, described wet process forming method first pastes interior adventitia, again the combination of interior adventitia is got up, then in die cavity, pour into hard polyurethane foams porous plastics, foamed solidification, namely finally demould becomes foam layer product. Described pair of beam adds fixing apparatus wet process forming method flow process as shown in Figure 4, and described method is specially: first paste interior adventitia, is combined by described interior adventitia; Select the selection of suitable foam materials; Under temperature is 20 ~ 30 DEG C of conditions, in die cavity, pour into hard polyurethane foams porous plastics; Last foamed solidification the demoulding form goods.

2. select suitable para-aramid fiber cloth, glass chopped strand mats, cut out by the technical requirements of product;

3. described para-aramid fiber cloth is boiled 20min in the water of 80 ~ 90 DEG C;

4. described para-aramid fiber cloth and glass chopped strand mats is laid successively to setting thickness;

Described glass chopped strand mats and para-aramid fiber cloth are in layer routed on described upper layer 3, successively repeat until need thickness. If when running into bent angle or shaggy block, available scissors, by cloth clip, then flattens with hairbrush. If when mould 1 two or more than two cloth of bigger palpus or felt overlap, 5cm should be overlapped. Meanwhile, overlap joint between every layer should stagger as much as possible. The consumption mass ratio of para-aramid fiber cloth and Resin adhesive II is 1:1.5. The consumption mass ratio of glass chopped strand mats and Resin adhesive II is 1:2.9.

5. on described para-aramid fiber cloth and glass chopped strand mats, place described pair of beam add fixing apparatus 10.

Seven, the laying of priming by vacuum device and sealing

First spreading release cloth 5, be then flow-guiding cloth 6, be finally vacuum bag 7, described flow-guiding cloth also comprises thrust-augmenting nozzle or water conservancy diversion net for 6 times, plays drainage, and described enhancement layer 4 is infiltrated evenly. Before the vacuum bag 7 that closes, to carefully consider the trend of resin 13 and vacuum-pumping pipeline, otherwise some places resin 13 can cannot infiltrate, adopt sealed strip 11 to be sealed by described vacuum bag 7. It is very careful during laying, in order to avoid some sharp objects puncture vacuum bag 7. Described priming by vacuum device is connected with other equipment by pipe connecting 8, and one end connects the bucket 12 that perfusion resin is housed, and the other end connects vacuum pump.

Eight, the priming by vacuum of resin 13

The Resin adhesive 13 of priming by vacuum is Resin adhesive II, and Resin adhesive 13 heats in container, stirs 3h, de-bubbled under 680Pa vacuum tightness; Vacuumize in mould 1 die cavity, take out the moisture in the bubble of most Resin adhesive 13 li and fiber parison, in die cavity, during dipping keep the vacuum tightness of 40Pa; Before injection, the vacuum tightness in die cavity is dropped to the vacuum tightness that 130Pa(is not more than de-bubbled by vacuum flush system), and remain to always and fill die cavity, with the pressure of 2.1MPa, Resin adhesive 13 is injected die cavity; Die cavity is full of final vacuum degree and disappears, the urethane cure in 101kPa lower impressions.

Nine, the solidification of product

Taking steam as medium, heat energy is transmitted to Resin adhesive 13 li through mould 1 backing, shell, profile, and Resin adhesive 13 is solidified. Owing to the thermal conductivity of metal die 1 used is better, therefore rate of heating is very fast. So, p-aramid fiber composite product requires to solidify at room temperature 270 ~ 280 DEG C, self-vulcanizing 20 ~ 24h.

Ten, the demoulding

Present method adopts qi exhaustion, being contained in advance on mould 1 by Special air nozzle, valve is connected with air pump by sebific duct, passes through valve during the demoulding, by the high pressure gas press-in die 1 of 390 ~ 680kPa with in the adhesive surface gap of product, along with product can be ejected by constantly entering of high pressure gas. Pore place can be beaten gently with skin hammer when suppressing, gas is entered rapidly. This release method is very effective to big area shell product.

Must not firmly beat mould 1 with hard hammer during the demoulding, split because easily the glue clothing layer 2 of product and mould 1 being shaken.

11, reinforcing member and web member is fixing

Former and the formpiston of product is obtained respectively by above-mentioned steps, fixing described reinforcing member and web member is pasted between described former and formpiston, the material of described reinforcing member is PVC foam, the interior face that reinforcing member and web member are bonded at before pasting the enhancement layer of described former and formpiston with resin putty, carries out coated after cured again; Metal web member, it is noted that the location in connection hole, if any screw, then should be closed, open after solidification again, prevent glue from flowing to screw.

12, aftertreatment

1, trimming: after product stripping, with diamond wheel along line cutting, adds water during cutting and otch can be made level and smooth, reduce dust pollution.

2, process: p-aramid fiber composite product all needs to process, i.e. edging, deburring, cut-out, perforate etc.

(1) adopt polishing machine to be destroyed by the burr of hair side, the blob of viscose of projection is tied, finishing trimming, chamfering etc.

(2) adopt toothless saw (also claiming cloud stone saw), add Water Cutting and become desired shape.

13, check and accept

Comprise outward appearance, size 2 each side.

(1) appearance surfaces is that the products appearance of glue clothing should reach: any surface finish, smooth, uniform color, flawless, inclusion-free, no wrinkle, bubble-free etc.

(2) size, weight, physical dimension, gauge, distortion size, bore size, skeleton size, check and accept by drawing tolerance. Monomer weight, accessory weight, overall weight are checked and accepted on request.

Embodiment two

A vacuum infusion molding method for p-aramid fiber composite product, Fig. 1 and Fig. 2 is the laminate structure schematic diagram of p-aramid fiber composite product of the present invention in vacuum infusion process, and as shown in Figure 3, described method comprises the steps:

One, mould 1 is cleared up

Adopting the combined mould 1 of stainless steel, comprise relative former and formpiston, prepared p-aramid fiber composite product is rectangular body shape product. Mould is stained with the residual glue that last time, the demoulding was left over, carefully roots out with flat chisel, can not damaging surface; Clean releasing agent with water, dry stand-by.

Two, brushing releasing agent

5 parts of polyvinyl alcohol (low molecule powderies are added after 45 parts of water are heated to 60 ~ 70 DEG C, molecular-weight average is 16000��20000), insulated and stirred is to dissolving rear cool to room temperature completely, then agitation and dropping 50 parts of ethanol, filter after completing, except degranulation and impurity. Finally add defoamer 1 part.

With the releasing agent of hairbrush evenly brushing preparation on stainless steel mould 1 surface, after having brushed, dry 30min, stand-by after drying and forming-film.

Three, Resin adhesive is prepared

1, Resin adhesive I: adopt 100 part of 196 unsaturated polyester resin, 2 parts of initiator methylethyl ketone peroxides, 1 part of promotor naphthoic acid cobalt, 3.5 parts of anti-caking agent aerosils, 3 parts of defoamers, 10 parts of pigment paste preparations. The loyal sky board environmental-friendly pigment that pigment paste adopts Jiangyin City Zhong Hao glass-reinforced plastic material company limited to produce herein is stuck with paste, and the trade mark is the black of 558.

2, Resin adhesive II: adopt 100 parts of shrinking percentages little (being generally 1%��3%), low viscosity, pre-promote high-performance methacrylic acid epoxy vingl ester resin MERICAN30-200P, 10 parts of thinner acetone, 3 parts of initiator methylethyl ketone peroxides, 6 parts by mass ratio be the xylidine of 1:1 and benzoyl peroxide be made into 10% promotor styrene solution, 20 parts of talcum powder as filler prepare.

3, glue is joined: join glue instrument and comprise plastic tank, plastic tub, plastic cup, graduated cylinder, stirring rod, agitator. The plastic tub preparation Resin adhesive I adopting volume less, craft stirring rod stirs; The plastic tank preparation Resin adhesive II adopting volume bigger, agitator stirs. After joining glue, 20 grams should be taken out and do sample gelling experiment, observe its gelation time, prevent solidification too fast or excessively slow.

The promotor measuring corresponding part number with graduated cylinder adds the Resin adhesive after stirring; Stir after evenly, then the solidifying agent of consumption statistic corresponding scores adds in Resin adhesive; Stir after evenly, add talcum powder, hereafter keep the whipped state of Resin adhesive.

Four, glue clothing layer 2 is made

With the special hairbrush of glass reinforced plastic, the Resin adhesive I prepared evenly being brushed the surface in mold cavity block and formpiston, the glue consumption of Resin adhesive I is 500g/m2, namely glue clothing thickness is at 0.4 ~ 0.5mm, and glue clothing self-vulcanizing 1 hour, reaches tactile dry rear stand-by.

Five, upper layer 3 is made

1, first in the Resin adhesive II prepared, UV light absorber is added. The UV light absorber herein adopted is the UV light absorber UV-320 photostabilizer that Nanjing produces through Tian Wei Chemical Co., Ltd.. Stir after evenly stand-by, and continue to keep the whipped state of glue liquid.

2, the fiberglass surfacing mat adapted with mould 1 surface size is layered on glue clothing layer 2, with hair roller, the Resin adhesive II of modulation in step 1 is evenly coated on the felt of surface, then with deaeration roller deaeration; With Resin adhesive, the dell not easily made or dead angle are filled and led up. Surface felt consumption is substance 50g/m2, glue content is 95%.

Six, enhancement layer 4 is made

Described enhancement layer 4 comprises fiber reinforcing layer 9 and Shuan Liang adds fixing apparatus 10, and described fiber reinforcing layer 9 comprises glass chopped strand mats and para-aramid fiber cloth, and the concrete making step of described enhancement layer 4 is as follows:

1. make two beam and add fixing apparatus 10;

It is " II " shape that described pair of beam adds fixing apparatus 10 profile, employing wet process forming method is made, described wet process forming method first pastes interior adventitia, again the combination of interior adventitia is got up, then in die cavity, pour into hard polyurethane foams porous plastics, foamed solidification, namely finally demould becomes foam layer product. Described pair of beam adds fixing apparatus wet process forming method flow process as shown in Figure 4, and described method is specially: first paste interior adventitia, is combined by described interior adventitia; Select the selection of suitable foam materials; Under temperature is 20 ~ 30 DEG C of conditions, in die cavity, pour into hard polyurethane foams porous plastics; Last foamed solidification the demoulding form goods.

2. select suitable para-aramid fiber cloth, glass chopped strand mats, cut out by the technical requirements of product;

3. described para-aramid fiber cloth is boiled 20min in the water of 80 ~ 90 DEG C;

4. described para-aramid fiber cloth and glass chopped strand mats is laid successively to setting thickness;

Described glass chopped strand mats and para-aramid fiber cloth are in layer routed on described upper layer 3, successively repeat until need thickness. If when running into bent angle or shaggy block, available scissors, by cloth clip, then flattens with hairbrush. If when mould 1 two or more than two cloth of bigger palpus or felt overlap, 5cm should be overlapped. Meanwhile, overlap joint between every layer should stagger as much as possible. The consumption mass ratio of para-aramid fiber cloth and Resin adhesive II is 1:1, and the consumption mass ratio of glass chopped strand mats and Resin adhesive II is 1:1.9.

5. on described para-aramid fiber cloth and glass chopped strand mats, place described pair of beam add fixing apparatus 10.

Seven, the laying of priming by vacuum device and sealing

With the step 7 of embodiment one.

Eight, the priming by vacuum of resin 13

The Resin adhesive 13 of priming by vacuum is Resin adhesive II, and Resin adhesive 13 heats in container, stirs 3h, de-bubbled under 700Pa vacuum tightness; Vacuumize in mould 1 die cavity, take out the moisture in the bubble of most Resin adhesive 13 li and fiber parison, in die cavity, during dipping keep the vacuum tightness of 42Pa; Before injection, the vacuum tightness in die cavity is dropped to the vacuum tightness that 140Pa(is not more than de-bubbled by vacuum flush system), and remain to always and fill die cavity, with the pressure of 2.1MPa, resin 13 is injected die cavity; Die cavity is full of final vacuum degree and disappears, the urethane cure in 101kPa lower impressions.

Nine, the solidification of product

With the step 9 of embodiment one.

Ten, the demoulding

With the step 10 of embodiment one.

11, reinforcing member and web member is fixing

Described reinforcing member material is metal, and other steps are with the step 11 of embodiment one.

12, aftertreatment

With the step 12 of embodiment one.

13, check and accept

With the step 13 of embodiment one.

Above-described embodiment is only the preferred embodiment of the present invention be described; not the scope of the present invention is limited; under the prerequisite not departing from inventive design spirit; the various distortion that the technical scheme of the present invention is made by those of ordinary skill in the art and improvement, all should fall in the protection domain that claims of the present invention is determined.

Claims (8)

1. the vacuum infusion molding method of a p-aramid fiber composite product, it is characterised in that: comprise the steps:
(1) mould is cleared up;
(2) brushing releasing agent;
(3) glue clothing layer Resin adhesive, upper layer Resin adhesive and perfusion Resin adhesive is prepared respectively; Described glue clothing layer Resin adhesive adopts 100 parts of unsaturated polyester resins, 2 parts of initiator methylethyl ketone peroxides, 1��4 part of promotor cobalt naphthenate or naphthoic acid cobalt, 2.5��3.5 parts of anti-caking agent aerosils, 2��3 parts of defoamers, and 8��10 parts of pigment paste are formulated; Described upper layer Resin adhesive and perfusion Resin adhesive adopt 100 parts of unsaturated polyester resins or epoxy resin, 5��10 parts of thinner acetone, 1��3 part of initiator methylethyl ketone peroxide, 4��6 parts formulated by mass ratio to be the massfraction that the xylidine of 1:1 and benzoyl peroxide are made into the be promotor styrene solution of 8%��10%, 10��20 parts of talcum powder as filler;
(4) glue clothing layer is made;
(5) upper layer is made;
(6) enhancement layer is made, comprising para-aramid fiber cloth;
(7) lay priming by vacuum device and seal;
(8) priming by vacuum;
(9) product solidification;
(10) demoulding;
(11) reinforcing member and web member is fixing: former and the formpiston being obtained described p-aramid fiber composite product by described step (1) to step (10) respectively, pastes fixing described reinforcing member and described web member between described former and the enhancement layer of formpiston;
(12) aftertreatment.
2. the vacuum infusion molding method of p-aramid fiber composite product according to claim 1, it is characterised in that: described upper layer adopts the glass chopped strand mats being coated with UV light absorber or ultraviolet paint to make.
3. the vacuum infusion molding method of p-aramid fiber composite product according to claim 2, it is characterised in that: described mould is stainless steel mould, and described releasing agent is polyvinyl alcohol.
4. the vacuum infusion molding method of p-aramid fiber composite product according to claim 1, it is characterized in that: described enhancement layer is selected para-aramid fiber cloth, glass chopped strand mats and Shuan Liang to add fixing apparatus and is made, and the making method of described enhancement layer comprises the steps:
A. make two beam and add fixing apparatus;
B. select suitable para-aramid fiber cloth, glass chopped strand mats, cut out;
C. described para-aramid fiber cloth is boiled 20min in the water of 80��90 DEG C;
D. described para-aramid fiber cloth and glass chopped strand mats is laid successively to setting thickness;
E. on described para-aramid fiber cloth and glass chopped strand mats, place described pair of beam add fixing apparatus.
5. the vacuum infusion molding method of p-aramid fiber composite product according to claim 4, it is characterised in that: the described pair of beam adds and is filled with sandwich material between two beams of fixing apparatus.
6. the vacuum infusion molding method of p-aramid fiber composite product according to claim 5, it is characterised in that: described pair of beam adds fixing apparatus and adopts wet process forming method to be made, and making method is: first paste interior adventitia, is combined by described interior adventitia; Select the selection of suitable foam materials; Under temperature is 20��30 DEG C of conditions, in die cavity, pour into hard polyurethane foams porous plastics; Last foamed solidification the demoulding form goods.
7. the vacuum infusion molding method of p-aramid fiber composite product according to claim 1, it is characterized in that: described priming by vacuum device comprises release cloth, flow-guiding cloth and vacuum bag, described release cloth is laid on described enhancement layer, lays described flow-guiding cloth and described vacuum bag successively on described release cloth upper strata.
8. the vacuum infusion molding method of p-aramid fiber composite product according to claim 1, it is characterised in that: in described step (11), the material of reinforcing member is PVC foam, polyurethane foam or metallic substance.
CN201210568332.0A 2012-12-24 2012-12-24 A kind of vacuum infusion molding method of p-aramid fiber composite product CN102990942B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210568332.0A CN102990942B (en) 2012-12-24 2012-12-24 A kind of vacuum infusion molding method of p-aramid fiber composite product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210568332.0A CN102990942B (en) 2012-12-24 2012-12-24 A kind of vacuum infusion molding method of p-aramid fiber composite product

Publications (2)

Publication Number Publication Date
CN102990942A CN102990942A (en) 2013-03-27
CN102990942B true CN102990942B (en) 2016-06-08

Family

ID=47920295

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210568332.0A CN102990942B (en) 2012-12-24 2012-12-24 A kind of vacuum infusion molding method of p-aramid fiber composite product

Country Status (1)

Country Link
CN (1) CN102990942B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103448260B (en) * 2013-08-27 2017-02-15 中国船舶重工集团公司第七二五研究所 Connecting method of shell plate made from composites and metal member
CN103804872A (en) * 2014-02-11 2014-05-21 烟台泰和新材料股份有限公司 Aramid fiber composite material and well lid prepared by utilizing same
CN105014988A (en) * 2015-06-18 2015-11-04 上海耀华大中新材料有限公司 Manufacturing method of carbon fiber automobile battery box and carbon fiber automobile battery box
CN105416567A (en) * 2015-11-13 2016-03-23 中国人民解放军国防科学技术大学 Skin, unmanned aerial vehicle wing, manufacturing method of unmanned aerial vehicle wing, empennage and manufacturing method of empennage
CN105419278A (en) * 2015-12-22 2016-03-23 合肥仲农生物科技有限公司 Insulating composite material
US10406794B2 (en) * 2016-09-16 2019-09-10 GM Global Technology Operations LLC Method for improvement of weatherability of open air processed composites
CN106346683B (en) * 2016-12-01 2019-03-29 江西洪都航空工业集团有限责任公司 A kind of manufacturing method of aviation large-scale composite material foamed plastics sandwich structure piece
CN106881881B (en) * 2017-03-29 2019-06-07 重庆海庆新材料有限公司 Weather-proof glass fiber reinforced plastics product vacuum imports processing method
CN108597741A (en) * 2018-04-26 2018-09-28 山东泰开电力电子有限公司 A kind of air reactor compound noise-reducing rain cover and preparation method
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
CN110001086A (en) * 2019-01-28 2019-07-12 广东国立科技股份有限公司 A kind of molding vacuum introducing technology prepares the encapsulating method of carbon fibre composite
CN110315768A (en) * 2019-07-09 2019-10-11 江阴市利澄机械制造有限公司 A kind of glass steel surface board production technology with mirror effect

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2190595Y (en) * 1994-04-15 1995-03-01 重庆专用汽车制造总厂 Anti-bullet, anti-collision and anti-explosion car casing structure
CN101204847A (en) * 2006-12-22 2008-06-25 江苏九鼎新材料股份有限公司 Slender glass steel flag stick and producing method and device with same
CN201456304U (en) * 2009-07-17 2010-05-12 上海越科复合材料有限公司 Glue-injection base made of composite material for vacuum infusion
CN102555239A (en) * 2010-12-22 2012-07-11 上海艾郎风电科技发展有限公司 Pumping pipeline for filling large-sized glass fiber reinforced plastic product in vacuum

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2190595Y (en) * 1994-04-15 1995-03-01 重庆专用汽车制造总厂 Anti-bullet, anti-collision and anti-explosion car casing structure
CN101204847A (en) * 2006-12-22 2008-06-25 江苏九鼎新材料股份有限公司 Slender glass steel flag stick and producing method and device with same
CN201456304U (en) * 2009-07-17 2010-05-12 上海越科复合材料有限公司 Glue-injection base made of composite material for vacuum infusion
CN102555239A (en) * 2010-12-22 2012-07-11 上海艾郎风电科技发展有限公司 Pumping pipeline for filling large-sized glass fiber reinforced plastic product in vacuum

Also Published As

Publication number Publication date
CN102990942A (en) 2013-03-27

Similar Documents

Publication Publication Date Title
CN104995015B (en) The method for manufacturing the air force casing part for wind turbine blade
CN103963315B (en) A kind of prepreg/resin transfer moulding co-curing process of composite
EP2125344B1 (en) Manufacture of a fibre-reinforced composite moulding
Karlsson et al. Manufacturing and applications of structural sandwich components
DK176135B1 (en) Vacuum infusion using semipermeable membrane
US20160031183A1 (en) Reinforced Composite Materials For Use In The Manufacture Moulds And The Use Of Such Moulds
CN104401277B (en) A kind of automobile collision preventing structural part and its preparation method
DK176335B1 (en) Process for manufacturing wind turbine blades
CN105848860A (en) Wind turbine blades
CN101749194B (en) Wind turbine blade for large-scale wind generating set, and molding method thereof
CN107189354B (en) A kind of preparation method of graphene nanometer sheet enhancing carbon fibre composite
JP5877156B2 (en) Rotor blade manufacturing method and manufacturing apparatus thereof
US20110244213A1 (en) Core for composite laminated article and manufacture thereof
US4353947A (en) Laminated composite structure and method of manufacture
Williams et al. Resin infusion under flexible tooling (RIFT): a review
CN102276960B (en) Lightweight high-strength composite material and preparation method thereof
JP6556286B2 (en) Method for producing a composite material
CN103042697A (en) Integral forming process of carbon fiber antenna reflecting surface
CN102481704B (en) Wind Blade Mould Including A Heating System
EP1711324B1 (en) Carbon foam composite tooling and methods for using the same
CA2741479A1 (en) Wind turbine blade and method for manufacturing thereof
CN104761880A (en) Short-fiber-reinforced pultrusion composite material solar energy assembly frame and preparation method thereof
US9643363B2 (en) Manufacture of a structural composites component
WO2008010198A1 (en) Composite articles comprising in-situ-polymerisable thermoplastic material and processes for their construction
GB2257938A (en) Vacuum-forming fibre reinforced resin composites

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant