CN103009635B - The hand pasting forming method of p-aramid fiber composite product - Google Patents

The hand pasting forming method of p-aramid fiber composite product Download PDF

Info

Publication number
CN103009635B
CN103009635B CN201210571193.7A CN201210571193A CN103009635B CN 103009635 B CN103009635 B CN 103009635B CN 201210571193 A CN201210571193 A CN 201210571193A CN 103009635 B CN103009635 B CN 103009635B
Authority
CN
China
Prior art keywords
aramid fiber
fiber composite
parts
layer
resin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201210571193.7A
Other languages
Chinese (zh)
Other versions
CN103009635A (en
Inventor
马千里
王双成
许德胜
姜茂忠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
YANTAI TAYHO ADVANCED MATERIALS CO Ltd
Original Assignee
YANTAI TAYHO ADVANCED MATERIALS CO Ltd
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 YANTAI TAYHO ADVANCED MATERIALS CO Ltd filed Critical YANTAI TAYHO ADVANCED MATERIALS CO Ltd
Priority to CN201210571193.7A priority Critical patent/CN103009635B/en
Publication of CN103009635A publication Critical patent/CN103009635A/en
Application granted granted Critical
Publication of CN103009635B publication Critical patent/CN103009635B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The present invention relates to a kind of hand pasting forming method of p-aramid fiber composite product, specifically include following steps: (1) cleaning mould (2) brushing releasing agent (3) are prepared gel coating resin resin glue, surface layer and enhancement layer resin glue (4) respectively and made gel coating resin (5) making surface layer (6) making enhancement layer (7) die assembly and product solidification (8) demoulding (9) post processing. Opponent of the present invention sticks with paste forming method and has improved, and including being coated with UV absorbent or uvioresistant paint at surface layer, the para-aramid fiber cloth in enhancement layer is carried out pretreatment. P-aramid fiber composite equipment is simple, small investment to adopt the present invention to produce, and production technology is easily grasped, all can field fabrication for some large-scale p-aramid fiber composites that should not transport; P-aramid fiber composite product has good ultra-violet resistance energy, and p-aramid fiber and resin have good caking property simultaneously, makes composite obtain stable, good properties.

Description

The hand pasting forming method of p-aramid fiber composite product
Technical field
The preparation method that the present invention relates to a kind of p-aramid fiber composite product, particularly relates to a kind of hand pasting forming method of p-aramid fiber composite product.
Background technology
In existing high-performance fiber, p-aramid fiber is one of best organic fiber of combination property, ranks one of three big high performance materials, and p-aramid fiber composite is described as the diamond on the material Phaleria macrocarpa of the whole world. The prominent performance characteristics of p-aramid fiber is high-strength, Gao Mo and high temperature resistant, also has the performances such as wear-resisting, fire-retardant, resistance to chemical attack, insulation, anti-cutting, resisting fatigue, pliable and tough, good stability of the dimension simultaneously. Owing to p-aramid fiber has outstanding combination property, its application is very extensive, relate to that Aero-Space, defence and military, transportation, civil construction, telecommunications, protection be explosion-proof, Leisure Sport, disaster relief rescue etc., almost cover the every aspect of high-tech area. Such as deadweight is Aircraft Design's teacher most concerned technical specification except safety, therefore the aramid fiber composite reinforced on polymer that density is only small is used as the structural material of aerospace, rocket and aircraft, it is used for alleviating deadweight, increase payload, saving a large amount of power fuel, the parts such as the housing of Boeing, interior trim part and seat all employ p-aramid fiber. Aramid fiber composite material (AFRP) also can be widely used to the parts such as light truck and the power transmission shaft of car, chassis, guard, seat skeleton, car door, panel, water tank. In addition, the application form of p-aramid fiber is also constantly opened up, high impact properties such as overseas utilization p-aramid fiber composite, the advanced composite material (ACM) product that p-aramid fiber is complementary mutually with other fortifying fibre is developed in field of compound material, the impact strength making composite is equivalent to the several times of conventional carbon fiber-reinforced thermosetting resin, and thermostability, resistance to chemical reagents and creep resistance are increased, and molding cycle shortens.
Although p-aramid fiber and composite thereof have the combination property of excellence, but himself there is also some shortcomings.Performance comparision such as p-aramid fiber self UV radiation is poor. For another example, aramid fiber material itself is bad with the caking property of resin, causes that the interlaminar shear strength of composite is on the low side. These defects not only can affect the overall performance of composite, also largely effects on the life-span of its use.
The preparation of current p-aramid fiber composite is in conceptual phase more, really carries out the report phoenix feathers and unicorn horns of industrialization production, does not still adopt hands formulating method to produce the report of p-aramid fiber composite.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of hand pasting forming method of p-aramid fiber composite, and prepared p-aramid fiber composite can reach the excellent properties of bonds well between uvioresistant, material. To achieve these goals, the hand pasting forming method that the present invention adopts is as follows: comprise the steps:
(1) cleaning mould;
(2) brushing releasing agent;
(3) gel coating resin resin glue, surface layer and enhancement layer resin glue are prepared respectively;
(4) gel coating resin is made;
(5) surface layer is made;
(6) enhancement layer is made;
(7) die assembly and product solidify;
(8) demoulding;
(9) post processing.
The hand pasting forming method of the p-aramid fiber composite product of the present invention, wherein said mould is stainless steel mould, and described releasing agent is polyvinyl alcohol.
The hand pasting forming method of the p-aramid fiber composite product of the present invention, wherein said gel coating resin resin glue adopts 100 parts of unsaturated polyester resins, 2 parts of initiator methyl ethyl ketone peroxides, 1 ~ 4 part of accelerator cobalt naphthenate or naphthoic acid cobalt, 2.5 ~ 3.5 parts of anti-caking agent aerosils, 2 ~ 3 parts of defoamer, 8 ~ 10 parts of pigment paste preparations.
The hand pasting forming method of the present invention, wherein said surface layer and enhancement layer resin glue adopt 100 parts of unsaturated polyester resins or epoxy resin, 5 ~ 10 parts of diluent acetone, 1 ~ 3 part of initiator methyl ethyl ketone peroxide, 4 ~ 6 parts of the accelerator styrene solution that mass fraction is 8% ~ 10% being made into by the dimethylaniline that mass ratio is 1:1 and benzoyl peroxide, 10 ~ 20 parts of Pulvis Talci as filler to prepare.
The hand pasting forming method of the p-aramid fiber composite product of the present invention, wherein said surface layer adopts the glass chopped strand mats being coated with UV absorbent or ultraviolet paint to make.
The hand pasting forming method of the p-aramid fiber composite product of the present invention, wherein said enhancement layer material selection para-aramid fiber cloth, glass chopped strand mats and Sandwich materials make.
The hand pasting forming method of the p-aramid fiber composite product of the present invention, the para-aramid fiber cloth of wherein said reinforcing material boils 20min before using in the water of 80 ~ 90 DEG C.
The hand pasting forming method of the p-aramid fiber composite product of the present invention, when wherein said enhancement layer pastes, the consumption mass ratio of para-aramid fiber cloth and resin glue is 1:1 ~ 1:5, and the consumption mass ratio of glass chopped strand mats and resin glue is 1:1.9 ~ 1:2.9.
The hand pasting forming method of the p-aramid fiber composite product of the present invention, wherein said Sandwich materials selects PVC foam, polyurethane foam or metal material.
The hand pasting forming method of the p-aramid fiber composite product of the present invention, wherein said solidification process, with steam for medium, carries out at the temperature of 270 ~ 280 DEG C.
The hand pasting forming method of p-aramid fiber composite product is first brushing releasing agent on mould, then the brushing resin compound containing firming agent on mould, one layer of fabric cut out on request of paving thereon is as showing layer again, with brush, pressure roller or scraper extrusion fabric so that it is homogeneous impregnation is bubble removing side by side; Repasting brush resin compound and paving second layer fabric, said process is till reaching desired thickness repeatedly; Then be heating and curing shaping (hot forming) under certain pressure effect, or liberated heat solidified forming (cold-press moulding) when utilizing resin system to solidify;The last demoulding and carry out post processing and obtain composite product.
One, cleaning mould
The material making hands paste mould has multiple, should be selected according to specific product size, shape and access times. Hands formulating method is generally without metal die, because metal die processing difficulties, cost is higher. But the corrosion resistant plate that usable surface is bright and clean when making flat board or production quantity is big; This method adopts stainless steel mould. If mould is made up of polylith, then need to fit together, it should be noted that assemble location, can not be excessive to die slot gap, can seal with adhesive tape if desired, it is prevented that gummosis mucosa, relevant knock-outs to install, and jacking block is set level.
Mould is stained with the cull that last time, the demoulding was left over, carefully roots out with flat chisel, it is impossible to 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 be the water of PVA or alcoholic solution formulated, can on mould film forming.
When carrying out the preparation of releasing agent, first heat the water to 60 ~ 70 DEG C, add PVA powder while stirring, and insulated and stirred is to being completely dissolved. It is cooled to room temperature, then is stirred and drips at a slow speed ethanol, it is prevented that caking. Filter after completing, remove granule and impurity, be eventually adding proper quantity of defoaming agent, dress.
When carrying out the brushing of releasing agent, impregnate PVA releasing agent with hairbrush or polyurethane foams block, note can not inspiration air, produce bubble, then uniformly brush at die surface. Controlling brushing thickness by the dynamics of hands, brushing is many and bad. 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 being completely dried film forming. But drying time is longer when it is cold, about 0.5 ~ 1 hour. Brushing is it is noted that uniformly, brushes and improper has minute bubbles.
If the PVA releasing agent resting period is long, when viscosity increases, appropriate water or ethanol dilution use again can be added, may filter that use again if any impurity, have no effect on effect.
If room temperature is low, when drying time is long, available hair-dryer is air-dry, but prevents dust from falling into. Summer is brushing releasing agent under light, have on film hood, it is prevented that mosquito falls into.
Namely the method removing releasing agent cleans with tap water, necessarily avoids clearing up with flat chisel, in order to avoid scratching mould.
Three, preparation resin glue
1, resin glue I: adopt 100 parts of unsaturated polyester resins, 2 parts of initiator methyl ethyl ketone peroxides, 1 ~ 4 part of accelerator cobalt naphthenate or naphthoic acid cobalt, 2.5 ~ 3.5 parts of anti-caking agent aerosils, 2 ~ 3 parts of defoamer, 8 ~ 10 parts of pigment paste preparations. When preparing resin glue I and adding pigment paste, the materials of a set of product or a collection of product once should be allotted, in order to avoid occurring that color is inconsistent because repeatedly preparing. Described number is mass fraction.
2, resin glue II: adopt 100 parts of unsaturated polyester resins or epoxy resin, 5 ~ 10 parts of diluent acetone, 1 ~ 3 part of initiator methyl ethyl ketone peroxide, 4 ~ 6 parts by the dimethylaniline that mass ratio is 1:1 and benzoyl peroxide be made into 8% ~ 10% accelerator styrene solution, 10 ~ 20 parts of Pulvis Talci as filler prepare. Described number is mass fraction.
3, glue is joined
Join glue instrument and include Plastic Drum, plastic tub, plastic cup, graduated cylinder, stirring rod, agitator etc. During preparation glue, the quantity of preparation is prepared by product consumption and the consumption once pasted, on a small quantity with basin, and manual stirring; Substantial amounts of resin then needs to use drum, and agitator stirring can be used. Join after glue every time, 10 ~ 20 grams should be taken out and do sample Gel experiment, observe its gelling time in order to controlling hands and stick with paste the time, it is prevented that solidify too fast or excessively slow.
Join accelerator, firming agent during glue to add with graduated cylinder metering respectively, and once can only add one, the second can be added after stirring, otherwise there will be two kinds of auxiliary materials and react to each other, burning and blast occur. If glue there being filler add, then need frequent stirring, in order to avoid filler precipitation.
The consumption of accelerator regulates from 1% ~ 4% voluntarily with the change of weather, can add 6% at most when it is cold.
Firming agent can only be proportionally added into, and can not arbitrarily increase and decrease.
Epoxy resin uses the phase short, according to epoxy preparation resin glue, once can only prepare on a small quantity.
Four, gel coating resin is made
The quality of gel coating resin directly affects the presentation quality of product, therefore, selects high-quality gel coating resin and pigment paste and to adopt correct brushing method be very crucial.
Gel coating resin adopts resin glue I.
The brushing method that the present invention adopts is to brush at die surface with hairbrush equably by the resin glue I prepared, and the glue consumption of resin glue I is 500g/m2, namely gel coat thickness is in 0.4 ~ 0.5mm, gel coat cold curing 1 hour, reaches tactile dry rear stand-by. Being generally adopted fiberglass brush special during brushing, common hairbrush easily falls hair, to try one's best uniformly during brushing, and hairbrush should not be brushed back and forth repeatedly, it is impossible to holiday, it is impossible to produce trace, it is impossible to gather. This method is adopted at home in a large number, then little abroad. Uneven because brushing, efficiency is low. But some structures are complicated, and the goods not easily brushed still have to adopt
Five, surface layer is made
The surface layer of p-aramid fiber composite is to make by fiberglass surfacing mat laying. Surface layer can prevent gel coat from appearing woven design, makes surface form resin-rich layer, so that the resistance to seepage of product, corrosion resistance improve further.
Make surface layer and adopt resin glue II and glass chopped strand mats.
When making surface layer, owing to p-aramid fiber/epoxy composite material often uses in an atmosphere, the effect of sunlight especially ultraviolet light can make the mechanical property of composite that a degree of change occurs. Ultraviolet luminous energy causes many chemical reactions, makes macromolecular material that oxidation and degraded to occur, and these reactions are often chain reactions, and accelerated by the addition of the conditions such as temperature, oxygen, humidity. Accordingly, it would be desirable to add UV absorbent in resin glue II, or outside surface layer, it is coated with UV resistant paint, thus extending the service life of p-aramid fiber/epoxy composite material.
When carrying out the making of surface layer, first glass chopped strand mats is pressed die surface size cutting. Surface substance is 30g/m2Or 50g/m2Chopped mat as well, be layered on gel coat 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 surface layer should control 85% ~ 95%.
Six, enhancement layer is made
Enhancement layer is the important bearing bed of composite product, plays a part to ensure structure and the intensity of product. Enhancement layer includes the reinforcing material directly directly pasting on mould and the Sandwich materials being placed in mould.
Enhancement layer adopts resin glue II, para-aramid fiber cloth, glass chopped strand mats, sandwich of layers material; Needs according to product, also include built-in fitting, such as various connectors in enhancement layer. Wherein, sandwich of layers material acts primarily as the skeletal support effect of holding capacity or the structure supporting role of non-stress, including PVC foam, polyurethane foam or metal material.According to the size of p-aramid fiber composite product, shape, stressing conditions, sandwich of layers can be designed. Para-aramid fiber cloth and glass chopped strand mats to selecting carry out adaptability cutting as required, if being used for being coated with Sandwich materials, adapt with Sandwich materials, if sticking with paste on the surface layer of mould for directly paving, adapt with mould.
Para-aramid fiber cloth is with to boil 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 adhesion of aramid fiber and resin, it may be achieved the bonds well of p-aramid fiber and resin glue so that it is obtain stable, good properties.
The specific make step of enhancement layer is as follows:
1, instrument is pasted:
1. hairbrush: using fiberglass brush special, common hairbrush easily falls hair. Hairbrush is 1in(25.4mm), 1.5in(38mm), 2in(50.8mm), 3in(76.2mm) etc. all size.
2. hair roller: the special hair roller of fiberglass, hair roller in commercial coating also can be used, but its tube core, handle are plastics, and these plastics are soluble in resin or acetone, it is necessary to change wooden tube core and handle into.
3. deaeration roller: being processed into thread groove shape roller with nylon rod or aluminium bar, it is on sale that specialized company is leveled in variously-shaped and size deaeration with a roller.
4. glue scraping plate: with hard hectograph or fiberglass processing and fabricating. Secondly also have plastic cup, shears etc.
2, method is pasted:
1. the pasting of para-aramid fiber cloth: the first brushing resin glue II on the mould being covered with surface layer or enhancement layer with hairbrush, then by hand para-aramid fiber cloth is laid in surface, hairbrush gluing is used again after floating, glue need to soak into, then with glue scraping plate strike off, deaeration, repave the second layer, be repeated in until the thickness needed. If run into bent angle or shaggy block, available shears, by cloth clip, then flattens with hairbrush. If mould two or more than two fiber cloth of bigger palpus overlaps, 5cm should be overlapped. Meanwhile, the overlap joint between every layer should stagger as much as possible. The consumption mass ratio of para-aramid fiber cloth and resin glue II is 1:1 ~ 1:1.5.
2. the pasting of glass chopped strand mats: with hair roller brushing resin glue II on the die surface being covered with surface layer or enhancement layer, then by hand the felt cut out is layered on mould and floating, gluing is leveled with a roller again with hair, level pressure back and forth with a roller, make glue immerse in felt, then level with a roller resin glue expression surface in felt with calymma, and discharge bubble, paste the second layer again, be repeated in until the thickness needed. If running into corner, it is possible to by hand felt is torn, in order to cladding; If mould two or more than two fiber cloth of bigger palpus overlaps, the overlap joint between two pieces of felts is also 5cm. The consumption mass ratio of glass chopped strand mats and resin glue II is 1:1.9 ~ 1:2.9.
3., in pasting process, 1. step hockets with 2. regular.
3, the preparation of Sandwich materials: according to product need choose suitable material as sandwich of layers, and cut or pour into required form, size, uniform brushing resin glue II, para-aramid fiber cloth that size with it adapts or the smooth cladding of glass chopped strand mats will be cut out on it, after each ingredient of mould has pasted, the sandwich of layers this being covered to complete is placed in mould, carries out the combination of mould.
Seven, die assembly and product solidify
The mould pasting enhancement layer is combined with sandwich of layers. With steam for medium, heat energy is transmitted in resin through mould backing, shell, profile, makes resin solidify. Owing to the heat conductivity of mould therefor tool is better, therefore firing rate is very fast. Aramid fiber composite material product requires to solidify at 270 ~ 280 DEG C, cold curing 20 ~ 24h.
Eight, the demoulding
The demoulding is one procedure crucial in hands formulating method. The quality of the demoulding is directly connected to the quality of product and effective utilization of mould. Certainly, the quality of the demoulding additionally depends on the design of mould; The surface smoothness of mould; Releasing agent and painting brushing effects; Additionally depend on the technology of the demoulding.
The method adopts water desorption method, namely injects the water of 0.4 ~ 0.6MPa in valve, it is possible to taken off by product, because water can dissolve releasing agent.
Firmly must not beat mould with hard hammer during the demoulding, split because easily the gel coating resin of product and mould being shaken.
Nine, post processing
(1) trimming: p-aramid fiber composite product needs burr to excise. After product stripping, with skive along line cutting, add water during cutting and otch can be made to smooth, reduce dust pollution. But this method must reserve allowance in advance, the technology of cutting personnel also wants skilled, otherwise easily cuts bad by product.
(2) processing: p-aramid fiber composite product is both needed to be processed. 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 protruding blob of viscose, repairs trimming, chamfering etc.
2. cutting firmly can be cut along gel coat face with hacksaw, but saw kerf is not bright and clean, and effect is bad. Most employing toothless saws (sawing also referred to as marble), add Water Cutting, and not only cutting efficiency is high, and otch is bright and clean.
3. perforate: square hole can cut with toothless saw. The perforate of circular hole is more complicated, and aperture can use electric hand drill, opens with normal drill bit or diamond bit, and diameter adopts this method at the Kong Douke of below 20mm. The aperture that from gel coat surface, should start with little drill bit perforate during punching is smooth, effective.
Middle shape hole, diameter, in the hole of 30 ~ 100mm, can use hole making drill. Thin-wall product metal hole-opener, heavy wall then needs to use diamond hole making drill, but this hole making drill need to realize ordering by size.
Large-scale circular hole, diameter, in the perforate of more than 100mm, first beats many apertures with little drill bit along round wires, is then destroyed by plate in circle, then is polished by circular hole wall with little emery wheel grinding-head.
The invention difference from existing technology is in that a kind of hand pasting forming method of improvement is applied to the production of p-aramid fiber composite by the present invention, its maximum advantage is that equipment is simple, small investment, instant effect, production technology is easily grasped, only can need to produce through short-term cultivation, all can field fabrication for some large-scale p-aramid fiber composites that should not transport. Adopt the hand pasting forming method that a kind of production method flow process of p-aramid fiber prepared by the hand pasting forming method of improvement provided by the invention is simple, can be effectively improved p-aramid fiber composite product ultra-violet resistance energy, make p-aramid fiber and resin have good caking property simultaneously, make composite obtain stable, good properties.
Meanwhile, in the hand pasting forming method step two of p-aramid fiber composite of the present invention, the releasing agent prepared has the advantage that stripping result is good; Low price; Easily preparation; Can preserve for a long time; Brushing is convenient; Can wash by water; Levelability, good film-forming property; Product surface is bright and clean.
Below in conjunction with accompanying drawing, the hand pasting forming method of p-aramid fiber composite product of the present invention is described further.
Accompanying drawing explanation
Fig. 1 is hand pasting forming method flow diagram of the present invention.
Detailed description of the invention
Embodiment 1
A kind of hand pasting forming method flow of tabular p-aramid fiber composite product:
Fig. 1 is hand pasting forming method flow diagram.Specifically include following steps:
One, cleaning mould
Adopting the Combined mould of stainless steel, including relative former and formpiston, prepared p-aramid fiber composite product is rectangle platy. Mould is stained with the cull that last time, the demoulding was left over, carefully roots out with flat chisel, it is impossible to damage surface; Clean releasing agent with water, dry stand-by.
Two, brushing releasing agent
45 parts of water heating are added 5 parts of polyvinyl alcohol (low molecule powderies after 60 ~ 70 DEG C, mean molecule quantity is 16000��20000), insulated and stirred is cooled to room temperature after being completely dissolved, and is stirred for 50 parts of ethanol of dropping, filter after completing, remove granule and impurity. Finally add defoamer 1 part.
Uniformly brush the releasing agent prepared with hairbrush on stainless steel mould surface, after having brushed, dry 30min, stand-by after drying and forming-film.
Three, preparation resin glue
1, resin glue I: adopt 100 part of 196 unsaturated polyester resin, 2 parts of initiator methyl ethyl ketone peroxides, 4 parts of accelerator cobalt naphthenates, 2.5 parts of anti-caking agent aerosils, 2 part of 6800 defoamer, 8 parts of pigment paste preparations. Pigment paste adopts the loyal sky board environmental-friendly pigment that Jiangyin City Zhong Hao glass-reinforced plastic material company limited produces to stick with paste, and the trade mark is the light gray of 177.
2, resin glue II: adopt 100 parts of shrinkage factors little (being generally 1%��3%), low viscosity, pre-promote high-performance glycidyl vinylite MERICAN30-200P, 5 parts of diluent acetone, 1 part of initiator methyl ethyl ketone peroxide, 4 parts by the dimethylaniline that mass ratio is 1:1 and benzoyl peroxide be made into 8% accelerator styrene solution, 10 parts of Pulvis Talci as filler prepare.
3, glue is joined: join glue instrument and include Plastic Drum, plastic tub, plastic cup, graduated cylinder, stirring rod, agitator. Adopting the plastic tub preparation resin glue I that volume is less, craft stirring rod stirs; Adopting the Plastic Drum preparation resin glue II that volume is bigger, agitator stirs. After joining glue, 10 grams should be taken out and do sample Gel experiment, observe its gelling time in order to controlling hands and stick with paste the time, it is prevented that solidify too fast or excessively slow.
The accelerator measuring corresponding number with graduated cylinder adds the resin glue after stirring; After stirring, then the firming agent of consumption statistic corresponding scores adds in resin glue; After stirring, add talcum powder, hereafter keep the stirring of resin glue.
Four, gel coating resin is made
With fiberglass brush special, the resin glue I prepared being brushed surface in mold cavity block and formpiston equably, the glue consumption of resin glue I is 500g/m2, namely gel coat thickness is in 0.4 ~ 0.5mm, gel coat cold curing 1 hour, reaches tactile dry rear stand-by.
Five, surface layer is made
1, in the resin glue II prepared, UV absorbent is first added. The UV absorbent herein adopted is the UV absorbent UV-320 light stabilizer that Nanjing produces through Tian Wei Chemical Co., Ltd.. After stirring stand-by, and continue to keep the stirring of glue.
2, the fiberglass surfacing mat adapted with die surface size is layered on gel coating resin, with hair roller, the resin glue II of modulation in step 1 is evenly coated on the felt of surface, then with deaeration roller deaeration; With resin glue, 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 is made
1, enhancement layer material is prepared
Sandwich materials is the previously prepared good PVC cystosepiment adapted with mould size. Para-aramid fiber cloth and glass chopped strand mats are cut into the size adapted with PVC cystosepiment, mould, para-aramid fiber cloth is boiled 20min in the water of 80 ~ 90 DEG C.Adopt the resin glue II of preparation in step 3.
2, the enhancement layer of die surface is prepared
1. the pasting of para-aramid fiber cloth: the first brushing resin glue II on the mould being covered with surface layer or enhancement layer with hairbrush, then by hand para-aramid fiber cloth is laid in surface, hairbrush gluing is used again after floating, glue need to soak into, then with glue scraping plate strike off, deaeration, repave the second layer, be repeated in until the thickness needed. If run into bent angle or shaggy block, available shears, by cloth clip, then flattens with hairbrush. If mould two or more than two fiber cloth of bigger palpus overlaps, 5cm should be overlapped. Meanwhile, the overlap joint between every layer should stagger as much as possible. The consumption mass ratio of para-aramid fiber cloth and resin glue II is 1:1.
2. the pasting of glass chopped strand mats: with hair roller brushing resin glue II on the die surface being covered with surface layer or enhancement layer, then by hand the felt cut out is layered on mould and floating, gluing is leveled with a roller again with hair, level pressure back and forth with a roller, make glue immerse in felt, then level with a roller resin glue expression surface in felt with calymma, and discharge bubble, paste the second layer again, be repeated in until the thickness needed. If running into corner, it is possible to by hand felt is torn, in order to cladding; If mould two or more than two fiber cloth of bigger palpus overlaps, the overlap joint between two pieces of felts is also 5cm. The consumption mass ratio of glass chopped strand mats and resin glue II is 1:1.9.
3., in pasting process, 1. step hockets with 2. regular.
3, preparation sandwich of layers: at the previously prepared good uniform brushing resin glue II in PVC cystosepiment surface adapted with mould size, para-aramid fiber cloth that size with it adapts or the smooth cladding of glass chopped strand mats will be cut out on it, after each ingredient of mould has pasted, the sandwich of layers this being covered to complete is placed in mould, carries out the combination of mould.
Seven, die assembly and product solidify
The mould pasting enhancement layer is combined with sandwich of layers. With steam for medium, the mould after combination is solidified 20 ~ 24h at 270 ~ 280 DEG C.
Eight, the demoulding
Adopt the water desorption method demoulding, in valve, namely inject the water of 0.4 ~ 0.6MPa, dissolve releasing agent, product can be taken off. Nine, post processing
1, trimming: after product stripping, with skive along line cutting, adds water during cutting and otch can be made to smooth, reduce dust pollution.
2, processing: p-aramid fiber composite product is both needed to be processed, i.e. edging, deburring, cut-out, perforate etc.
(1) adopt polishing machine to be destroyed by the burr of hair side, protruding blob of viscose is tied, repair trimming, chamfering etc.
(2) adopt toothless saw (sawing also referred to as marble), add water and cut into required form.
Embodiment 2
A kind of hand pasting forming method flow of cuboid p-aramid fiber composite product:
Fig. 1 is hand pasting forming method flow diagram. Specifically include following steps:
One, cleaning mould
Adopting the Combined mould of stainless steel, including relative former and formpiston, prepared p-aramid fiber composite product is rectangular body shape product. Mould is stained with the cull that last time, the demoulding was left over, carefully roots out with flat chisel, it is impossible to damage surface; Clean releasing agent with water, dry stand-by.
Two, brushing releasing agent
45 parts of water heating are added 5 parts of polyvinyl alcohol (low molecule powderies after 60 ~ 70 DEG C, mean molecule quantity is 16000��20000), insulated and stirred is cooled to room temperature after being completely dissolved, and is stirred for 50 parts of ethanol of dropping, filter after completing, remove granule and impurity.Finally add defoamer 1 part.
Uniformly brush the releasing agent of preparation with hairbrush on stainless steel mould surface, after having brushed, dry 30min, stand-by after drying and forming-film. Three, preparation resin glue
1, resin glue I: adopt 100 part of 196 unsaturated polyester resin, 2 parts of initiator methyl ethyl ketone peroxides, 1 part of accelerator naphthoic acid cobalt, 3.5 parts of anti-caking agent aerosils, 3 parts of defoamer, 10 parts of pigment paste preparations. Pigment paste adopts the loyal sky board environmental-friendly pigment that Jiangyin City Zhong Hao glass-reinforced plastic material company limited produces to stick with paste herein, and the trade mark is the black of 558.
2, resin glue II: adopt 100 parts of shrinkage factors little (being generally 1%��3%), low viscosity, pre-promote high-performance glycidyl vinylite MERICAN30-200P, 10 parts of diluent acetone, 3 parts of initiator methyl ethyl ketone peroxides, 6 parts by the dimethylaniline that mass ratio is 1:1 and benzoyl peroxide be made into 10% accelerator styrene solution, 20 parts of Pulvis Talci as filler prepare.
3, glue is joined: join glue instrument and include Plastic Drum, plastic tub, plastic cup, graduated cylinder, stirring rod, agitator. Adopting the plastic tub preparation resin glue I that volume is less, craft stirring rod stirs; Adopting the Plastic Drum preparation resin glue II that volume is bigger, agitator stirs. After joining glue, 20 grams should be taken out and do sample Gel experiment, observe its gelling time in order to controlling hands and stick with paste the time, it is prevented that solidify too fast or excessively slow.
The accelerator measuring corresponding number with graduated cylinder adds the resin glue after stirring; After stirring, then the firming agent of consumption statistic corresponding scores adds in resin glue; After stirring, add talcum powder, hereafter keep the stirring of resin glue.
Four, gel coating resin is made
With fiberglass brush special, the resin glue I prepared being brushed surface in mold cavity block and formpiston equably, the glue consumption of resin glue I is 500g/m2, namely gel coat thickness is in 0.4 ~ 0.5mm, gel coat cold curing 1 hour, reaches tactile dry rear stand-by.
Five, surface layer is made
1, in the resin glue II prepared, UV absorbent is first added. The UV absorbent herein adopted is the UV absorbent UV-320 light stabilizer that Nanjing produces through Tian Wei Chemical Co., Ltd.. After stirring stand-by, and continue to keep the stirring of glue.
2, the fiberglass surfacing mat adapted with die surface size is layered on gel coating resin, with hair roller, the resin glue II of modulation in step 1 is evenly coated on the felt of surface, then with deaeration roller deaeration; With resin glue, 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 is made
Sandwich materials selects previously prepared good PVC foam block, and all the other steps are with embodiment 1 step 6.
Seven, die assembly and product solidify
With embodiment 1 step 7.
Eight, the demoulding
With embodiment 1 step 8.
Nine, post processing
With embodiment 1 step 9.
Embodiment described above is only that the preferred embodiment of the present invention is described; not the scope of the present invention is defined; under the premise designing spirit without departing from the present invention; various deformation that technical scheme 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 hand pasting forming method of a p-aramid fiber composite product, it is characterised in that: comprise the steps:
(1) cleaning mould;
(2) brushing releasing agent;
(3) gel coating resin resin glue, surface layer and enhancement layer resin glue are prepared respectively; Described gel coating resin resin glue adopts 100 parts of unsaturated polyester resins, 2 parts of initiator methyl ethyl ketone peroxides, 1��4 part of accelerator cobalt naphthenate or naphthoic acid cobalt, 2.5��3.5 parts of anti-caking agent aerosils, 2��3 parts of defoamer, 8��10 parts of pigment paste preparations; Described surface layer and enhancement layer resin glue adopt 100 parts of unsaturated polyester resins or epoxy resin, 5��10 parts of diluent acetone, 1��3 part of initiator methyl ethyl ketone peroxide, 4��6 parts of the accelerator styrene solution that mass fraction is 8%��10% being made into by the dimethylaniline that mass ratio is 1:1 and benzoyl peroxide, 10��20 parts of Pulvis Talci as filler to prepare;
(4) gel coating resin is made;
(5) surface layer is made;
(6) enhancement layer is made, including para-aramid fiber cloth;
(7) die assembly and product solidify;
(8) demoulding;
(9) post processing.
2. the hand pasting forming method of p-aramid fiber composite product according to claim 1, it is characterised in that: described mould is stainless steel mould, and described releasing agent is polyvinyl alcohol.
3. the hand pasting forming method of p-aramid fiber composite product according to claim 1, it is characterised in that: described surface layer adopts the glass chopped strand mats being coated with UV absorbent or ultraviolet paint to make.
4. the hand pasting forming method of p-aramid fiber composite product according to claim 1, it is characterised in that: described enhancement layer material selection para-aramid fiber cloth, glass chopped strand mats and Sandwich materials make.
5. the hand pasting forming method of p-aramid fiber composite product according to claim 4, it is characterised in that: the para-aramid fiber cloth of described reinforcing material boils 20min before using in the water of 80��90 DEG C.
6. the hand pasting forming method of p-aramid fiber composite product according to claim 4, it is characterized in that: when described enhancement layer pastes, the consumption mass ratio of para-aramid fiber cloth and resin glue is 1:1��1:5, and the consumption mass ratio of glass chopped strand mats and resin glue is 1:1.9��1:2.9.
7. the hand pasting forming method of p-aramid fiber composite product according to claim 4, it is characterised in that: described Sandwich materials selects PVC foam, polyurethane foam or metal material.
8. the hand pasting forming method of p-aramid fiber composite product according to claim 1, it is characterised in that: described product solidifies with steam for medium, carries out at the temperature of 270��280 DEG C.
CN201210571193.7A 2012-12-24 2012-12-24 The hand pasting forming method of p-aramid fiber composite product Active CN103009635B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210571193.7A CN103009635B (en) 2012-12-24 2012-12-24 The hand pasting forming method of p-aramid fiber composite product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210571193.7A CN103009635B (en) 2012-12-24 2012-12-24 The hand pasting forming method of p-aramid fiber composite product

Publications (2)

Publication Number Publication Date
CN103009635A CN103009635A (en) 2013-04-03
CN103009635B true CN103009635B (en) 2016-06-08

Family

ID=47959001

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210571193.7A Active CN103009635B (en) 2012-12-24 2012-12-24 The hand pasting forming method of p-aramid fiber composite product

Country Status (1)

Country Link
CN (1) CN103009635B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103303211B (en) * 2013-06-13 2015-07-29 东莞市悠派智能展示科技有限公司 A kind of method utilizing manual pasting forming process to prepare Roof of vehicle
CN104742379B (en) * 2015-03-25 2018-04-17 上海德竑玻璃钢制品有限公司 The preparation method of fiberglass mould and fiberglass
CN105965911A (en) * 2016-06-16 2016-09-28 悌埃保温制品(上海)有限公司 Manufacturing technology of fiberglass reinforced plastic protective layer outside thermal insulation layer
CN107351427A (en) * 2017-06-28 2017-11-17 苏州派瑞美德汽车配件有限公司 Cost low metal material for auto parts machinery
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
CN108891098A (en) * 2018-06-26 2018-11-27 苏州海马消防设备制造有限公司 A kind of fire water box composite material and preparation method

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
CN103009635A (en) 2013-04-03

Similar Documents

Publication Publication Date Title
CN103287568B (en) A kind of high-speed aircraft anti-heat insulation structural of large area interlayer and forming method thereof
Weatherhead FRP technology: fibre reinforced resin systems
US20100166998A1 (en) Fibre-reinforced composite moulding and manufacture thereof
JP2015221563A (en) Composite products
JP6556286B2 (en) Method for producing a composite material
CN103967147B (en) Heat preservation dismounting-free formwork and preparation method thereof
CN101705922B (en) Large-scale composite material wind-power blade and preparation method thereof
GB2475352A (en) Prepregs for repair of composite materials and method of use
CN101830095B (en) Composite material member with surface function layer and VIMP preparation method thereof
CN201411859Y (en) Fireproof, heat-insulation and decoration integrated plate
WO2003020505A1 (en) Cfrp plate material and method for preparation thereof
CN1845212B (en) Globe manufacturing method
CN103042700A (en) Integrated forming method and device for segmented blade
CN104441654A (en) Three-dimensional biological printing device and method
CN103911014B (en) Reflection-type glass fiber reinforced plastic anchor pole pallet and production method thereof
US20040217504A1 (en) Composite material for vehicle hulls and a hull molding process
CN104787998B (en) A kind of production technology of glass toughening manure pit
CN104647494B (en) A kind of production method of rubber wood timber heating floor
CN102814996B (en) Preparing method of hybrid composite wing spar of large-scale wind power blade
CN201043336Y (en) Verelite composite fancy veneer
CN104487231B (en) Using the drawing core method of PMI foam cores
CN104592728B (en) A kind of aeroge fiberglass composite door and window section bar and preparation method thereof
CN101067350A (en) Strength natural figured bamboo floor
CN107189354A (en) A kind of graphene nanometer sheet strengthens the preparation method of carbon fibre composite
CN103057126A (en) Large-scale composite material integral molding blade and molding process thereof

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