CN104669630A - Polyphenylene sulfide/carbon fiber cospun fabric and mold pressing molding method thereof - Google Patents
Polyphenylene sulfide/carbon fiber cospun fabric and mold pressing molding method thereof Download PDFInfo
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- CN104669630A CN104669630A CN201510070417.XA CN201510070417A CN104669630A CN 104669630 A CN104669630 A CN 104669630A CN 201510070417 A CN201510070417 A CN 201510070417A CN 104669630 A CN104669630 A CN 104669630A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/06—Fibrous reinforcements only
- B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
- B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
- B29C70/22—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in at least two directions forming a two dimensional structure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/46—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
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Abstract
The invention relates to a polyphenylene sulfide/carbon fiber cospun fabric. The cospun fabric is a plain cospun fabric and is braided of warp-wise braided fiber bundles and weft-wise braided fiber bundles, wherein the warp-wise braided fiber bundles are formed by combining a plurality of warp-wise carbon fiber bundles and warp-wise polyphenylene sulfide fiber bundles alternately in pair; the weft-wise braided fiber bundles are formed by combining a plurality of weft-wise carbon fiber bundles and weft-wise polyphenylene sulfide fiber bundles alternately in pair; when mold pressing molding is carried out, the cospun fabric is cut and laid in advance, and then is pre-heated; the cospun fabric is put into a mold pressing mold with a pre-heating temperature lower than a PPS softening point to be pressurized; the carbon fibers and a PPS cospun blank are subjected to heat preservation and pressure keeping to be tightly combined and molded under the effect of pressure; and then the mold pressing mold is cooled to be lower than the PPS softening point and then is cured to obtain a product. Compared with the prior art, the mold pressing molding process is simple, the production period is short, the production efficiency is high and the cost can be effectively reduced; and the distribution uniformity of the carbon fibers in the cured product is good, and the product has good inflaming retarding property, high strength and high modulus.
Description
Technical field
The invention belongs to technical field of composite materials, relate to a kind of cospinning cloth and preparation method thereof, especially relate to a kind of polyphenylene sulfide/carbon fiber cospinning cloth and compression-moulding methods thereof.
Background technology
Polyphenylene sulfide, English name is Phenylene sulfide, and being called for short PPS, is a kind of thermoplastic special engineering plastic of excellent combination property.Polyphenylene sulfide, in its macromolecular structure, phenyl ring contraposition connects sulphur atom, and form rigid macromolecule main polymer chain, degree of crystallinity is high, density 1.34g/cm
3, fusing point 285 DEG C, decomposition temperature is greater than 400 DEG C, is succeeded in developing the earliest by Philips Oil Co., Ltd of the U.S., is good exotic material.The PPS fiber prepared by polyphenylene sulfide has very strong rigidity, fatigue durability, chemical resistance, heat resistance and anti-flammability, and good textile process performance.PPS fiber can use continuously at 200 ~ 240 DEG C, in lower than the air of 400 DEG C or nitrogen stable (basic zero gravity loss), the etch (solvent-free solvable at 200 DEG C) of the chemicals such as acid, alkali, chlorocarbon, hydro carbons, ketone, alcohol, ester can be resisted, there is excellent anti-flammability, its limited oxygen index (LOI) is 34%, does not need to add fire retardant and just can reach U.S. UL94V-0 flame-retardant standard.Due to the property of PPS fiber, be now widely used in the environment such as high temperature, chemical attack.
A kind of special fibre that carbon fiber is mainly made up of carbon, its phosphorus content is different with kind difference, generally more than 90%.Carbon fiber has the characteristic of general carbon materials, as high temperature resistant, rub resistance, conduction, heat conduction and corrosion-resistant etc.But with general carbon materials unlike, carbon fiber profile has significant anisotropy, softness, can be processed into various fabric, shows very high intensity along fiber axis direction.Carbon fiber proportion is little, therefore has very high specific strength.At present, the main application of carbon fiber is and the matrix compounds such as resin, metal, pottery make structural material, especially have the field of strict demand in density, rigidity, weight, fatigue properties etc., requiring the occasion that high temperature, chemical stability are high, carbon fibre composite is widely applied.
At present, continuous carbon fibre reinforced thermoplastics is adopted to have the advantage such as good toughness, material recoverable.And thermoplastic is selected PPS resin not only mechanical strength is high, also have excellent fire retardant performance, this also makes PPS resin have broad application prospects in the interior trim of the vehicles.But because continuous carbon fibre is more difficult with the preimpregnation of PPS resin, this greatly constrains the technical development of polyphenylene sulfide/carbon fibre composite.For this problem, application number is the preparation method that the Chinese invention patent of 201210471972.X discloses a kind of PPS composite, comprises the following steps: 1) PPS powder, fiber cloth are alternately sprawled evenly; 2) by step 1) mould that lays puts into hot press, and heat up by step pressurization, then cooling sizing die sinking, obtains PPS composite.Technical scheme disclosed in above-mentioned patent is that PPS powder is evenly placed on mould bottom surface, then places cloth of reinforcement fibers, more evenly places PPS powder in fiber cloth, matched moulds heating press molding.But the technological deficiency that above-mentioned patent exists is the uniformity of PPS powder in goods to be not easy to control, and mold heated needs the long period, and the production efficiency of product is not high, is unfavorable for reducing production cost.
Summary of the invention
Object of the present invention is exactly provide one effectively can improve carbon fiber distributing homogeneity to overcome defect that above-mentioned prior art exists, and the high polyphenylene sulfide/carbon fiber cospinning cloth of production efficiency and compression-moulding methods thereof.
Object of the present invention can be achieved through the following technical solutions:
A kind of polyphenylene sulfide/carbon fiber cospinning cloth, this cospinning cloth is plain weave cospinning cloth, woven by warp-wise braided fiber bundle and broadwise braided fiber bundle and form, described warp-wise braided fiber bundle combines by many warp-wise carbon fiber bundles are alternate between two with warp-wise polyphenylene sulfide fibre bundle, and described broadwise braided fiber bundle combines by many broadwise carbon fiber bundles are alternate between two with broadwise polyphenylene sulfide fibre bundle.
Described warp-wise carbon fiber bundle is identical with the number of broadwise carbon fiber bundle.
Described warp-wise polyphenylene sulfide fibre bundle is identical with the number of broadwise polyphenylene sulfide fibre bundle.
Described warp-wise carbon fiber bundle and broadwise carbon fiber bundle are the one in 1K carbon fiber bundle, 3K carbon fiber bundle or 6K carbon fiber bundle.
Described warp-wise polyphenylene sulfide fibre bundle and broadwise polyphenylene sulfide fibre bundle are the intrafascicular one of 400D/100f polyphenylene sulfide fibre bundle, 800D/200f polyphenylene sulfide fibre bundle or 1600D/400f polyphenylene sulfide fibre, and the fusing point of described polyphenylene sulfide fibre bundle is 285 DEG C.
A compression-moulding methods for polyphenylene sulfide/carbon fiber cospinning cloth, the method specifically comprises the following steps:
(1) polyphenylene sulfide/carbon fiber cospinning after cutting out is arranged in the preheating frame of heating furnace, and lays neat, then heating furnace is heated to 285 ~ 290 DEG C, constant temperature preheating 10 ~ 15min;
(2) molding die is carried out preheating, the temperature controlling molding die is less than 285 DEG C;
(3) in step (2) in the molding die die cavity of the pre-heat treatment, spraying releasing agent, step (1) being transferred to through the polyphenylene sulfide/carbon fiber cospinning cloth of the pre-heat treatment scribbles in the molding die die cavity of releasing agent again, matched moulds, controlled pressure is 0.2 ~ 0.5MPa, abundant pressurize 5 ~ 15min, and control temperature is 285 ~ 320 DEG C, after polyphenylene sulfide cooling curing, the demoulding.
Heating furnace described in step (1) is resistance-heated furnace, and described preheating frame is the preheating frame that metal material is made.
Releasing agent described in step (3) is external release agent, comprises silicone compounds, silicone oil, methyl-silicone oil, emulsification methyl-silicone oil, polytetrafluoroethylene (PTFE).
The dynamic model that described molding die comprises die shoe and is oppositely arranged with die shoe, described die shoe is provided with the die cavity for placing polyphenylene sulfide/carbon fiber cospinning cloth, described dynamic model is provided with the punch relative with die shoe die cavity, described die shoe and dynamic model are all arranged on a hydraulic press, and be provided with multiple through hole bottom described die shoe, be provided with electric heating tube in this through hole, this electric heating tube is connected with temperature controller by circuit.
PPS continuous fiber and continuous carbon fibre cospinning weave cotton cloth after cutting paving, preheating to be placed in metal die by the present invention, suppress under forcing press, be cooled to part, inside parts PPS and carbon fiber are uniformly distributed, and combine closely, smooth in appearance is attractive in appearance, and part production efficiency is high.
In the polyphenylene sulfide/carbon fiber cospinning cloth design process of reality, can by changing the relative populations of warp-wise carbon fiber bundle and warp-wise polyphenylene sulfide fibre bundle or changing the relative populations of broadwise carbon fiber bundle and broadwise polyphenylene sulfide fibre bundle, change the volume fraction of carbon fiber and polyphenylene sulfide fibre, in order to the requirement of satisfied different goods, applied widely.Such as, control warp-wise carbon fiber bundle consistent with warp-wise polyphenylene sulfide fibre bundle quantity, namely can obtain the carbon fiber enhanced polyphenylene sulfide composite material that volume fraction is 50%.
During die forming, polyphenylene sulfide/carbon fiber cospinning cloth is cut out according to accessory size and volume, puts into preheating frame after cutting out, and lays neat; Preheating frame adopts metal material to make, and preheating frame not bearing load substantially, require Nai Ji Baidu temperature, non-corrosive peeling, requirement of strength is not high.In the process heated resistance-heated furnace, be heated to temperature and be greater than polyphenylene sulfide fusion temperature, the too high easy generation polyphenylene sulfide trickling of temperature, can carry out the preheat temperature of controlling resistance heating furnace according to actual parts shape.
Molding die temperature then needs control temperature to be less than the fusion temperature of polyphenylene sulfide, because temperature is too high, goods cannot solidified forming, temperature is too low, be unfavorable for that again bi-material combines, and the surface quality of goods can be affected, can attempt determining most suitable temperature according to actual parts.
Compared with prior art, the present invention has following characteristics:
1) owing to adopting polyphenylene sulfide/carbon fiber cospinning cloth, after preheating, be placed in molding die and pressurize, molding die does not need continuous heating, but be in keeping warm mode, be in the carbon fiber of higher temperature and PPS cospinning blank under the pressure of molding die, combine closely and shaping, below PPS softening point is cooled fast to subsequently in molding die, solidification obtains goods, and whole compression molding process is simple, and the cycle is short, effectively can enhance productivity, and significantly reduce costs;
2) compared to existing employing PPS powder, the polyphenylene sulfide that the present invention adopts/carbon fiber cospinning cloth braiding is neat, time shaping, carbon fiber softens, still original woven condition can be kept, this can effectively ensure that carbon fiber is evenly distributed in cured article, and the homogeneity of cured article is good;
3) because matrix is thermoplasticity PPS macromolecular material, make goods have excellent fire protection flame retarding characteristic, and PPS fiber and carbon fiber are combined, give full play to both synergies, make goods have more high strength and high-modulus;
4) cured article of the present invention can as lightweight aero seat structural material, in order to replace traditional metal materials, weight reduction, simultaneously also can as passenger car part material, be conducive to the effects of energy saving and emission reduction improving vehicle, there is good application prospect.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of polyphenylene sulfide of the present invention/carbon fiber cospinning cloth;
Fig. 2 is the structural representation of molding die of the present invention;
Description of symbols in figure:
1-warp-wise carbon fiber bundle, 2-warp-wise polyphenylene sulfide fibre bundle, 3-broadwise carbon fiber bundle, 4-broadwise polyphenylene sulfide fibre bundle, 5-dynamic model, 6-die shoe, 7-polyphenylene sulfide/carbon fiber cospinning cloth, 8-through hole.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1:
As shown in Figure 1, a kind of polyphenylene sulfide/carbon fiber cospinning cloth, this cospinning cloth is plain weave cospinning cloth, woven by warp-wise braided fiber bundle and broadwise braided fiber bundle and form, warp-wise braided fiber bundle combines by many warp-wise carbon fiber bundles 1 are alternate between two with warp-wise polyphenylene sulfide fibre bundle 2, and broadwise braided fiber bundle combines by many broadwise carbon fiber bundles 3 are alternate between two with broadwise polyphenylene sulfide fibre bundle 4.
In the present embodiment, the number ratio of the warp-wise carbon fiber bundle 1 that warp-wise braided fiber is intrafascicular and warp-wise polyphenylene sulfide fibre bundle 2 is 1:2, and the number ratio of the broadwise carbon fiber bundle 3 that broadwise braided fiber is intrafascicular and broadwise polyphenylene sulfide fibre bundle 4 is also 1:2.Wherein, warp-wise carbon fiber bundle 1 and broadwise carbon fiber bundle 3 are 3K carbon fiber bundle, and warp-wise polyphenylene sulfide fibre bundle 2 and broadwise polyphenylene sulfide fibre bundle 4 are the polyphenylene sulfide fibre bundle of 1600D/400f, and the fusing point of this polyphenylene sulfide fibre bundle is 285 DEG C.
In the present embodiment, the compression-moulding methods of polyphenylene sulfide/carbon fiber cospinning cloth 7 specifically comprises the following steps:
(1) polyphenylene sulfide/carbon fiber cospinning cloth 7 after cutting out is placed in the preheating frame of heating furnace, and lays neat, then heating furnace is heated to 290 DEG C, constant temperature preheating 15min;
(2) molding die is carried out preheating, the temperature controlling molding die is less than 285 DEG C;
(3) in step (2) in the molding die die cavity of the pre-heat treatment, spraying releasing agent, step (1) being transferred to through the polyphenylene sulfide/carbon fiber cospinning cloth 7 of the pre-heat treatment scribbles in the molding die die cavity of releasing agent again, matched moulds, controlled pressure is 0.5MPa, abundant pressurize 10min, and control temperature is 320 DEG C, after polyphenylene sulfide cooling curing, the demoulding.
Heating furnace in step (1) is resistance-heated furnace, and preheating frame is the preheating frame that metal material is made.
Releasing agent in step (3) is methyl-silicone oil.
As shown in Figure 2, the dynamic model 5 that molding die comprises die shoe 6 and is oppositely arranged with die shoe 6, die shoe 6 is provided with the die cavity for placing polyphenylene sulfide/carbon fiber cospinning cloth 7, dynamic model 5 is provided with the punch relative with die shoe 6 die cavity, die shoe 6 and dynamic model 5 are all arranged on a hydraulic press, and be provided with multiple through hole 8 bottom die shoe 6, be provided with electric heating tube in this through hole 8, this electric heating tube is connected with temperature controller by circuit.
In polyphenylene sulfide/carbon fiber cospinning cloth 7 design process of reality, can by changing the relative populations of warp-wise carbon fiber bundle 1 and warp-wise polyphenylene sulfide fibre bundle 2 or changing the relative populations of broadwise carbon fiber bundle 3 and broadwise polyphenylene sulfide fibre bundle 4, change the volume fraction of carbon fiber and polyphenylene sulfide fibre, in order to the requirement of satisfied different goods, applied widely.
During die forming, polyphenylene sulfide/carbon fiber cospinning cloth 7 is cut out according to accessory size and volume, puts into preheating frame after cutting out, and lays neat; Preheating frame adopts metal material to make, and preheating frame not bearing load substantially, require Nai Ji Baidu temperature, non-corrosive peeling, requirement of strength is not high.In the process heated resistance-heated furnace, be heated to temperature and be greater than polyphenylene sulfide fusion temperature, the too high easy generation polyphenylene sulfide trickling of temperature, can carry out the preheat temperature of controlling resistance heating furnace according to actual parts shape.
Molding die temperature then needs control temperature to be less than the fusion temperature of polyphenylene sulfide, because temperature is too high, goods cannot solidified forming, temperature is too low, be unfavorable for that again bi-material combines, and the surface quality of goods can be affected, can attempt determining most suitable temperature according to actual parts.
Embodiment 2:
The present embodiment polyphenylene sulfide/carbon fiber cospinning cloth is plain weave cospinning cloth, woven by warp-wise braided fiber bundle and broadwise braided fiber bundle and form, warp-wise braided fiber bundle combines by many warp-wise carbon fiber bundles 1 are alternate between two with warp-wise polyphenylene sulfide fibre bundle 2, and broadwise braided fiber bundle combines by many broadwise carbon fiber bundles 3 are alternate between two with broadwise polyphenylene sulfide fibre bundle 4.
In the present embodiment, the number ratio of the warp-wise carbon fiber bundle 1 that warp-wise braided fiber is intrafascicular and warp-wise polyphenylene sulfide fibre bundle 2 is 1:2, and the number ratio of the broadwise carbon fiber bundle 3 that broadwise braided fiber is intrafascicular and broadwise polyphenylene sulfide fibre bundle 4 is also 1:2.Wherein, warp-wise carbon fiber bundle 1 and broadwise carbon fiber bundle 3 are 6K carbon fiber bundle, and warp-wise polyphenylene sulfide fibre bundle 2 and broadwise polyphenylene sulfide fibre bundle 4 are the polyphenylene sulfide fibre bundle of 800D/200f, and the fusing point of this polyphenylene sulfide fibre bundle is 285 DEG C.
In the present embodiment, the compression-moulding methods of polyphenylene sulfide/carbon fiber cospinning cloth 7 specifically comprises the following steps:
(1) polyphenylene sulfide/carbon fiber cospinning cloth 7 after cutting out is placed in the preheating frame of heating furnace, and lays neat, then heating furnace is heated to 285 DEG C, constant temperature preheating 10min;
(2) molding die is carried out preheating, the temperature controlling molding die is less than 285 DEG C;
(3) in step (2) in the molding die die cavity of the pre-heat treatment, spraying releasing agent, step (1) being transferred to through the polyphenylene sulfide/carbon fiber cospinning cloth 7 of the pre-heat treatment scribbles in the molding die die cavity of releasing agent again, matched moulds, controlled pressure is 0.3MPa, abundant pressurize 15min, and control temperature is 300 DEG C, after polyphenylene sulfide cooling curing, the demoulding.
Heating furnace in step (1) is resistance-heated furnace, and preheating frame is the preheating frame that metal material is made.
Releasing agent in step (3) is silicone oil.
Embodiment 3:
The present embodiment polyphenylene sulfide/carbon fiber cospinning cloth is plain weave cospinning cloth, woven by warp-wise braided fiber bundle and broadwise braided fiber bundle and form, warp-wise braided fiber bundle combines by many warp-wise carbon fiber bundles 1 are alternate between two with warp-wise polyphenylene sulfide fibre bundle 2, and broadwise braided fiber bundle combines by many broadwise carbon fiber bundles 3 are alternate between two with broadwise polyphenylene sulfide fibre bundle 4.
In the present embodiment, the number ratio of the warp-wise carbon fiber bundle 1 that warp-wise braided fiber is intrafascicular and warp-wise polyphenylene sulfide fibre bundle 2 is 1:2, and the number ratio of the broadwise carbon fiber bundle 3 that broadwise braided fiber is intrafascicular and broadwise polyphenylene sulfide fibre bundle 4 is also 1:2.Wherein, warp-wise carbon fiber bundle 1 and broadwise carbon fiber bundle 3 are 1K carbon fiber bundle, and warp-wise polyphenylene sulfide fibre bundle 2 and broadwise polyphenylene sulfide fibre bundle 4 are the polyphenylene sulfide fibre bundle of 400D/100f, and the fusing point of this polyphenylene sulfide fibre bundle is 285 DEG C.
In the present embodiment, the compression-moulding methods of polyphenylene sulfide/carbon fiber cospinning cloth 7 specifically comprises the following steps:
(1) polyphenylene sulfide/carbon fiber cospinning cloth 7 after cutting out is placed in the preheating frame of heating furnace, and lays neat, then heating furnace is heated to 288 DEG C, constant temperature preheating 12min;
(2) molding die is carried out preheating, the temperature controlling molding die is less than 285 DEG C;
(3) in step (2) in the molding die die cavity of the pre-heat treatment, spraying releasing agent, step (1) being transferred to through the polyphenylene sulfide/carbon fiber cospinning cloth 7 of the pre-heat treatment scribbles in the molding die die cavity of releasing agent again, matched moulds, controlled pressure is 0.2MPa, abundant pressurize 5min, and control temperature is 285 DEG C, after polyphenylene sulfide cooling curing, the demoulding.
Heating furnace in step (1) is resistance-heated furnace, and preheating frame is the preheating frame that metal material is made.
Releasing agent in step (3) is polytetrafluoroethylene (PTFE).
Embodiment 4:
The present embodiment polyphenylene sulfide/carbon fiber cospinning cloth is plain weave cospinning cloth, woven by warp-wise braided fiber bundle and broadwise braided fiber bundle and form, warp-wise braided fiber bundle combines by many warp-wise carbon fiber bundles 1 are alternate between two with warp-wise polyphenylene sulfide fibre bundle 2, and broadwise braided fiber bundle combines by many broadwise carbon fiber bundles 3 are alternate between two with broadwise polyphenylene sulfide fibre bundle 4.
In the present embodiment, the number ratio of the warp-wise carbon fiber bundle 1 that warp-wise braided fiber is intrafascicular and warp-wise polyphenylene sulfide fibre bundle 2 is 1:2, and the number ratio of the broadwise carbon fiber bundle 3 that broadwise braided fiber is intrafascicular and broadwise polyphenylene sulfide fibre bundle 4 is also 1:2.Wherein, warp-wise carbon fiber bundle 1 and broadwise carbon fiber bundle 3 are 3K carbon fiber bundle, and warp-wise polyphenylene sulfide fibre bundle 2 and broadwise polyphenylene sulfide fibre bundle 4 are the polyphenylene sulfide fibre bundle of 1600D/400f, and the fusing point of this polyphenylene sulfide fibre bundle is 285 DEG C.
In the present embodiment, the compression-moulding methods of polyphenylene sulfide/carbon fiber cospinning cloth 7 specifically comprises the following steps:
(1) polyphenylene sulfide/carbon fiber cospinning cloth 7 after cutting out is placed in the preheating frame of heating furnace, and lays neat, then heating furnace is heated to 289 DEG C, constant temperature preheating 10min;
(2) molding die is carried out preheating, the temperature controlling molding die is less than 285 DEG C;
(3) in step (2) in the molding die die cavity of the pre-heat treatment, spraying releasing agent, step (1) being transferred to through the polyphenylene sulfide/carbon fiber cospinning cloth 7 of the pre-heat treatment scribbles in the molding die die cavity of releasing agent again, matched moulds, controlled pressure is 0.4MPa, abundant pressurize 12min, and control temperature is 290 DEG C, after polyphenylene sulfide cooling curing, the demoulding.
Heating furnace in step (1) is resistance-heated furnace, and preheating frame is the preheating frame that metal material is made.
Releasing agent in step (3) is silicone compounds.
Embodiment 5:
The present embodiment polyphenylene sulfide/carbon fiber cospinning cloth is plain weave cospinning cloth, woven by warp-wise braided fiber bundle and broadwise braided fiber bundle and form, warp-wise braided fiber bundle combines by many warp-wise carbon fiber bundles 1 are alternate between two with warp-wise polyphenylene sulfide fibre bundle 2, and broadwise braided fiber bundle combines by many broadwise carbon fiber bundles 3 are alternate between two with broadwise polyphenylene sulfide fibre bundle 4.
In the present embodiment, the number ratio of the warp-wise carbon fiber bundle 1 that warp-wise braided fiber is intrafascicular and warp-wise polyphenylene sulfide fibre bundle 2 is 1:2, and the number ratio of the broadwise carbon fiber bundle 3 that broadwise braided fiber is intrafascicular and broadwise polyphenylene sulfide fibre bundle 4 is also 1:2.Wherein, warp-wise carbon fiber bundle 1 and broadwise carbon fiber bundle 3 are 6K carbon fiber bundle, and warp-wise polyphenylene sulfide fibre bundle 2 and broadwise polyphenylene sulfide fibre bundle 4 are the polyphenylene sulfide fibre bundle of 800D/200f, and the fusing point of this polyphenylene sulfide fibre bundle is 285 DEG C.
In the present embodiment, the compression-moulding methods of polyphenylene sulfide/carbon fiber cospinning cloth 7 specifically comprises the following steps:
(1) polyphenylene sulfide/carbon fiber cospinning cloth 7 after cutting out is placed in the preheating frame of heating furnace, and lays neat, then heating furnace is heated to 287 DEG C, constant temperature preheating 13min;
(2) molding die is carried out preheating, the temperature controlling molding die is less than 285 DEG C;
(3) in step (2) in the molding die die cavity of the pre-heat treatment, spraying releasing agent, step (1) being transferred to through the polyphenylene sulfide/carbon fiber cospinning cloth 7 of the pre-heat treatment scribbles in the molding die die cavity of releasing agent again, matched moulds, controlled pressure is 0.5MPa, abundant pressurize 8min, and control temperature is 295 DEG C, after polyphenylene sulfide cooling curing, the demoulding.
Heating furnace in step (1) is resistance-heated furnace, and preheating frame is the preheating frame that metal material is made.
Releasing agent in step (3) is emulsification methyl-silicone oil.
Claims (9)
1. polyphenylene sulfide/carbon fiber cospinning cloth, it is characterized in that, this cospinning cloth is plain weave cospinning cloth, woven by warp-wise braided fiber bundle and broadwise braided fiber bundle and form, described warp-wise braided fiber bundle combines by many warp-wise carbon fiber bundles are alternate between two with warp-wise polyphenylene sulfide fibre bundle, and described broadwise braided fiber bundle combines by many broadwise carbon fiber bundles are alternate between two with broadwise polyphenylene sulfide fibre bundle.
2. a kind of polyphenylene sulfide according to claim 1/carbon fiber cospinning cloth, is characterized in that, described warp-wise carbon fiber bundle is identical with the number of broadwise carbon fiber bundle.
3. a kind of polyphenylene sulfide according to claim 1/carbon fiber cospinning cloth, is characterized in that, described warp-wise polyphenylene sulfide fibre bundle is identical with the number of broadwise polyphenylene sulfide fibre bundle.
4. a kind of polyphenylene sulfide according to claim 1/carbon fiber cospinning cloth, is characterized in that, described warp-wise carbon fiber bundle and broadwise carbon fiber bundle are the one in 1K carbon fiber bundle, 3K carbon fiber bundle or 6K carbon fiber bundle.
5. a kind of polyphenylene sulfide according to claim 1/carbon fiber cospinning cloth, it is characterized in that, described warp-wise polyphenylene sulfide fibre bundle and broadwise polyphenylene sulfide fibre bundle are the intrafascicular one of 400D/100f polyphenylene sulfide fibre bundle, 800D/200f polyphenylene sulfide fibre bundle or 1600D/400f polyphenylene sulfide fibre, and the fusing point of described polyphenylene sulfide fibre bundle is 285 DEG C.
6. a compression-moulding methods for polyphenylene sulfide as claimed in claim 1/carbon fiber cospinning cloth, it is characterized in that, the method specifically comprises the following steps:
(1) polyphenylene sulfide/carbon fiber cospinning after cutting out is arranged in the preheating frame of heating furnace, and lays neat, then heating furnace is heated to 285 ~ 290 DEG C, constant temperature preheating 10 ~ 15min;
(2) molding die is carried out preheating, the temperature controlling molding die is less than 285 DEG C;
(3) in step (2) in the molding die die cavity of the pre-heat treatment, spraying releasing agent, step (1) being transferred to through the polyphenylene sulfide/carbon fiber cospinning cloth of the pre-heat treatment scribbles in the molding die die cavity of releasing agent again, matched moulds, controlled pressure is 0.2 ~ 0.5MPa, abundant pressurize 5 ~ 15min, and control temperature is 285 ~ 320 DEG C, after polyphenylene sulfide cooling curing, the demoulding.
7. the compression-moulding methods of a kind of polyphenylene sulfide according to claim 6/carbon fiber cospinning cloth, is characterized in that, the heating furnace described in step (1) is resistance-heated furnace, and described preheating frame is the preheating frame that metal material is made.
8. the compression-moulding methods of a kind of polyphenylene sulfide according to claim 6/carbon fiber cospinning cloth, it is characterized in that, releasing agent described in step (3) is external release agent, comprises silicone compounds, silicone oil, methyl-silicone oil, emulsification methyl-silicone oil, polytetrafluoroethylene (PTFE).
9. the compression-moulding methods of a kind of polyphenylene sulfide according to claim 6/carbon fiber cospinning cloth, it is characterized in that, the dynamic model that described molding die comprises die shoe and is oppositely arranged with die shoe, described die shoe is provided with the die cavity for placing polyphenylene sulfide/carbon fiber cospinning cloth, described dynamic model is provided with the punch relative with die shoe die cavity, described die shoe and dynamic model are all arranged on a hydraulic press, and be provided with multiple through hole bottom described die shoe, be provided with electric heating tube in this through hole, this electric heating tube is connected with temperature controller by circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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