CN108237749A - A kind of composite material and preparation method thereof - Google Patents
A kind of composite material and preparation method thereof Download PDFInfo
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- CN108237749A CN108237749A CN201611205137.6A CN201611205137A CN108237749A CN 108237749 A CN108237749 A CN 108237749A CN 201611205137 A CN201611205137 A CN 201611205137A CN 108237749 A CN108237749 A CN 108237749A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
- B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B9/045—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/101—Glass fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/718—Weight, e.g. weight per square meter
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The present invention relates to technical field of composite materials, disclose a kind of composite material and preparation method thereof, this method includes：Sheet molding compound first is placed on the dry cloth of continuous fiber, then gained continuous fiber cloth is laid in a mold, carries out molding curing process；Or be first laid with the dry cloth of continuous fiber in a mold, sheet molding compound then is placed on the dry cloth of continuous fiber, carries out molding curing process.SMC material are without accurately cutting in the preparation method of the present invention, and it only needs accurately to cut the dry cloth of continuous fiber, laying can arbitrarily adjust placed position, preparation process is simple, and it can ensure that there are continuous lod in all positions, the good mechanical performance of obtained composite material, and appearance is good, is visible by naked eyes defect.
Description
Technical field
The present invention relates to technical field of composite materials, and in particular, to a kind of composite material and preparation method thereof.
Background technology
Sheet molding compound (Sheet Molding Compound, SMC) be with resin, thickener, initiator, crosslinking agent,
Low shrinkage additive, filler, inner pattern releasing agent applicable and colorant etc. are mixed into resin paste, then impregnate chopped strand rove or fibrofelt,
And get up in upper and lower surface polyethylene or polypropylene film cladding and formed.Because SMC has superior electric property, corrosion-resistant
The advantages that performance, light and engineering design are easily, manufacture is flexible, mechanical performance can compare favourably with part metals material, because
And it is widely used in the industries such as haulage vehicle, building, electronic/electrical gas.
For current SMC in compression molding, product ectonexine inhomogeneous cooling forms internal stress and short after being demoulded due to heat
The orientation of fiber is cut, easily makes product that warpage occur；Simultaneously in order to ensure rigidity, need to thicken product, not only make system
Part weight increases, and also adds cost；In addition, SMC plate bodys occur during accident, easily cracking is broken, be easy to cause secondary injury and
It is not easily repaired.
CN 105538816A disclose a kind of sheet molding compound-prepreg hybrid composite and its manufacturing method, and have
Body discloses its sheet molding compound-prepreg hybrid composite and includes：First sheet molding compound outer layer, the second sheet molding compound
Outer layer and the prepreg being set between the first sheet molding compound outer layer and the second sheet molding compound outer layer.But
The composite material causes laying very tired during preparation, due to melting rapidly not moving after the high blowing of mold temperature
Difficulty, therefore precisely contraposition is needed, and the increase of stone operating time is easy to cause SMC material premature cures, mouldability is poor, particularly
1 square meter more than product.Moreover, if continuous fiber layer is not paved with die surface completely, lead to reduced performance, so as to easily lead to
Stress concentration.
Invention content
The purpose of the invention is to overcome in the preparation method of the prior art composite material SMC material need precisely to cut,
The defects of accurate laying, exactitude position, complex process is difficult, periphery leads to degradation without consecutive hours, provide a kind of composite wood
Material and preparation method thereof, SMC material are without accurately cutting in preparation method of the invention, and only need accurately to cut the dry cloth of continuous fiber
, laying can arbitrarily adjust placed position, and preparation process is simple, and can ensure that there are continuous lod in all positions,
The good mechanical performance of obtained composite material, and appearance is good, is visible by naked eyes defect.
To achieve these goals, in a first aspect, the present invention provides a kind of preparation method of composite material, this method packet
It includes：Sheet molding compound first is placed on the dry cloth of continuous fiber, then gained continuous fiber cloth is laid in a mold, is molded
Curing process；Or
First the dry cloth of continuous fiber is laid in a mold, then places sheet molding compound on the dry cloth of continuous fiber, is carried out
Mold curing process.
Second aspect, the present invention provides the composite materials that a kind of method of the present invention is prepared.
In the preparation method of the present invention, SMC material only need accurately to cut the dry cloth of continuous fiber without accurately cutting,
Laying can arbitrarily adjust placed position, and easy to operate, preparation process is simple, can ensure that there are continuous fiber increasing in all positions
By force.In addition, reducing product thickness mitigation weight in the range of rigidity and surface smoothness meeting, lightweight, and power can be realized
Function admirable, appearance is good, is visible by naked eyes defect, and entire lower surface (preferably upper and lower surface) has continuous fiber layer and company
Continuous fiber cloth is in outer surface, secondary injury caused by splashing when significantly more efficient can prevent from hitting.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Description of the drawings
Attached drawing is to be used to provide further understanding of the present invention, and a part for constitution instruction, with following tool
Body embodiment is used to explain the present invention, but be not construed as limiting the invention together.In the accompanying drawings：
Fig. 1 is that composite material prepares schematic diagram in one embodiment of the present invention.
Fig. 2 is that composite material prepares schematic diagram in another embodiment of the invention.
Reference sign
1 is the dry cloth of continuous fiber, and 2 be sheet molding compound.
Specific embodiment
The specific embodiment of the present invention is described in detail below.It is it should be understood that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
The endpoint of disclosed range and any value are not limited to the accurate range or value herein, these ranges or
Value should be understood to comprising the value close to these ranges or value.For numberical range, between the endpoint value of each range, respectively
It between the endpoint value of a range and individual point value and can be individually combined with each other between point value and obtain one or more
New numberical range, these numberical ranges should be considered as specific open herein.
In a first aspect, as shown in Figure 1, the present invention provides a kind of preparation method of composite material, this method includes：First exist
Sheet molding compound is placed on the dry cloth of continuous fiber, is then laid with gained continuous fiber cloth in a mold, is carried out at molding curing
Reason；Or
First the dry cloth of continuous fiber is laid in a mold, then places sheet molding compound on the dry cloth of continuous fiber, is carried out
Mold curing process.
In the method for the present invention, prevented made from secondary injury caused by splashing during shock and raising in order to significantly more efficient
The mechanical property of composite material, under preferable case, as shown in Fig. 2, this method further includes：Before molding curing process is carried out,
The dry cloth of continuous fiber is laid with above sheet molding compound.
In the method for the present invention, in order to further improve the mechanical property for the composite material being prepared and have better
Appearance, under preferable case, the grammes per square metre of the dry cloth of continuous fiber is 100-1000 grams per square meters, further preferably 120-600 grams/flat
Rice, is still more preferably 150-300 grams per square meters.
In the method for the present invention, in order to further improve the mechanical property for the composite material being prepared and have better
Appearance, under preferable case, the fiber number of the dry cloth of continuous fiber is 30-1200tex (Tekes), further preferably 30-600tex,
Still more preferably it is 50-250tex.
In the case of process of the present invention it is preferred, the thickness of sheet molding compound placed on the dry cloth of continuous fiber is 1-
6mm, further preferably 2-4mm.
In the case of process of the present invention it is preferred, sheet molding compound contain unsaturated polyester resin, low shrinkage additive,
Modified calcium carbonate, aluminium hydroxide, releasing agent, thickener, curing agent and chopped strand, using the weight of the sheet molding compound as base
Standard, the content of unsaturated polyester resin is 14-28 weight %, and the content of low shrinkage additive is 10-16 weight %, modified carbonic acid
The content of calcium is 35-50 weight %, and the content of aluminium hydroxide is 0.2-1 weight %, and the content of releasing agent is 0.5-1 weight %,
The content of thickener is 0.2-1 weight %, and the content of curing agent is 0.1-0.5 weight %, and the content of chopped strand is 5-18 weights
Measure %.Wherein, aforementioned SMC material are the special SMC material that can improve mobility, can be efficiently accomplished between the dry cloth of continuous fiber
Infiltration.
Wherein, for unsaturated polyester resin, there is no particular limitation, can be that various unsaturations commonly used in the art are poly-
Ester resin, for example, unsaturated polyester resin can be using styrene as the unsaturated polyester resin of solvent, it is and various unsaturated poly-
Ester resin can be commercially available.
Wherein, for low shrinkage additive, there is no particular limitation, can be that various lower shrinkages commonly used in the art add
Agent, under preferable case, low shrinkage additive is at least one of polystyrene, saturated polyester and vinyl acetate resin.Wherein,
Polystyrene, saturated polyester and vinyl acetate resin can be respectively the common various homologues as low shrinkage additive
Matter can be commercially available.
Wherein, for modified calcium carbonate, there is no particular limitation, can be various modified calcium carbonates commonly used in the art, example
If modified calcium carbonate can be using silane coupling agent as modifying agent, to the modified calcium carbonate that calcium carbonate is modified, specifically
Method of modifying be well known to those skilled in the art, details are not described herein, and aforementioned modified calcium carbonate can be obtained by commercially available
.
Wherein, for releasing agent, there is no particular limitation, can be various releasing agents commonly used in the art, preferable case
Under, releasing agent is zinc stearate and/or calcium stearate.
Wherein, for thickener, there is no particular limitation, can be various thickeners commonly used in the art, preferable case
Under, thickener is magnesia.
Wherein, for curing agent, there is no particular limitation, can be various curing agent commonly used in the art, preferable case
Under, curing agent is peroxidized t-butyl perbenzoate.
Wherein, under preferable case, the material of the dry cloth of continuous fiber is carbon fibre, glass, basalt or aramid fiber, further preferably
For glass or basalt.
Wherein, under preferable case, the material of chopped strand is carbon fibre, glass, basalt or aramid fiber, further preferably glass
Fine or basalt.
In the case of process of the present invention it is preferred, for mold curing process condition there is no particular limitation, Ke Yiwei
Various conditions commonly used in the art, under preferable case, the condition for molding curing process includes：Temperature is 140-160 DEG C, and pressure is
1-10Mpa, time 1-6min.Pressure in the present invention is gauge pressure.
Second aspect, the present invention provides the composite materials that the method for the invention is prepared.
Embodiment
The present invention will be described in detail by way of examples below, but is not intended to limit the present invention.Following embodiment
In comparative example, unless otherwise instructed, a variety of materials used can be commercially available, and various methods used are ability
The conventional method in domain.
Unsaturated polyester resin is purchased from Ya Shilan group companies, trade mark MR1309.
Modified calcium carbonate is purchased from Bai Rui calcium carbonate Co., Ltd of Jiangxi Province, trade mark CCR900.
Polystyrene is purchased from Ya Shilan group companies, trade mark MR63005K.
Various grammes per square metres, fiber number, material the dry cloth of continuous fiber be purchased from Chongqing Polycomp International Co., Ltd.
The chopped strand of various materials is purchased from Chongqing Polycomp International Co., Ltd.
Embodiment 1
Mold is first warming up to 150 DEG C, will be 200 grams per square meters according to the grammes per square metre that product size is cut, fiber number is
Sheet molding compound in a mold, is then placed on continuous fiber by 150tex, the accurate placed of the dry cloth of continuous fiber that material is glass
On dry cloth, the thickness for controlling sheet molding compound is 3mm, then one layer of grammes per square metre of placed is 200 grams per square meters, fibre on sheet molding compound
It spends for the dry cloth (as shown in Figure 2) of continuous fiber that 150tex, material are glass, finally molds curing process under 150 DEG C, 5Mpa
3min obtains composite A 1, wherein, sheet molding compound contains unsaturated polyester resin, polystyrene, modified calcium carbonate, hydrogen
Aluminium oxide, zinc stearate, magnesia, peroxidized t-butyl perbenzoate and short glass fiber, with the weight of the sheet molding compound
On the basis of amount, the content of unsaturated polyester resin is 28 weight %, and the content of polystyrene is 14.4 weight %, modified calcium carbonate
Content for 45 weight %, the content of aluminium hydroxide is 0.7 weight %, and the content of zinc stearate is 0.8 weight %, magnesia
Content is 0.8 weight %, and the content of peroxidized t-butyl perbenzoate is 0.3 weight %, and the content of short glass fiber is 10 weights
Measure %.
Embodiment 2
Mold is first warming up to 140 DEG C, at the same be 150 grams per square meters according to the grammes per square metre that product size is cut, fiber number is
50tex, material is place sheet molding compound on the dry cloth of continuous fiber of glass, and the thickness for controlling sheet molding compound is 4mm, by institute
Obtain the accurate placed of continuous fiber cloth in a mold, then one layer of grammes per square metre of placed is 150 grams per square meters on sheet molding compound, fiber number is
50tex, the dry cloth of continuous fiber that material is glass, curing process 6min is finally molded under 140 DEG C, 8Mpa, obtains composite wood
Expect A2, wherein, sheet molding compound contain unsaturated polyester resin, polystyrene, modified calcium carbonate, aluminium hydroxide, calcium stearate,
Magnesia, peroxidized t-butyl perbenzoate and short glass fiber, on the basis of the weight of the sheet molding compound, unsaturation is poly-
The content of ester resin is 24 weight %, and the content of polystyrene is 16 weight %, and the content of modified calcium carbonate is 40 weight %, hydrogen
The content of aluminium oxide is 0.9 weight %, and the content of calcium stearate is 0.6 weight %, and the content of magnesia is 0.3 weight %, mistake
The content for aoxidizing t-butyl perbenzoate is 0.2 weight %, and the content of short glass fiber is 18 weight %.
Embodiment 3
Mold is first warming up to 160 DEG C, will be 300 grams per square meters according to the grammes per square metre that product size is cut, fiber number is
Sheet molding compound in a mold, is then placed on continuous fibre by 250tex, material for the accurate placed of the dry cloth of basaltic continuous fiber
Tie up on dry cloth, control the thickness of sheet molding compound as 2mm, then on sheet molding compound one layer of grammes per square metre of placed be 300 grams per square meters,
Fiber number is 250tex, material is the dry cloth of basaltic continuous fiber, and curing process 2min is finally molded under 160 DEG C, 3Mpa, is obtained
To composite A 3, wherein, sheet molding compound contain unsaturated polyester resin, polystyrene, modified calcium carbonate, aluminium hydroxide,
Zinc stearate, magnesia, peroxidized t-butyl perbenzoate and chopped basalt fibre, using the weight of the sheet molding compound as base
Standard, the content of unsaturated polyester resin is 28 weight %, and the content of polystyrene is 12 weight %, and the content of modified calcium carbonate is
50 weight %, the content of aluminium hydroxide is 0.3 weight %, and the content of zinc stearate is 0.7 weight %, and the content of magnesia is
0.5 weight %, the content of peroxidized t-butyl perbenzoate is 0.5 weight %, and the content for the basalt fibre that is chopped is 8 weight %.
Embodiment 4
Composite A 4 is prepared according to the method for embodiment 1, unlike, it is only laid under sheet molding compound continuous fine
Dry cloth is tieed up, the dry cloth of continuous fiber (as shown in Figure 1) is not laid on sheet molding compound.
Embodiment 5
Prepare composite A 5 according to the method for embodiment 1, unlike, the grammes per square metre of the dry cloth of continuous fiber for 120 grams/it is flat
Rice.
Embodiment 6
Prepare composite A 6 according to the method for embodiment 1, unlike, the grammes per square metre of the dry cloth of continuous fiber for 600 grams/it is flat
Rice, fiber number 600tex.
Embodiment 7
Prepare composite A 7 according to the method for embodiment 1, unlike, the grammes per square metre of the dry cloth of continuous fiber for 100 grams/it is flat
Rice.
Embodiment 8
Prepare composite A 8 according to the method for embodiment 1, unlike, the grammes per square metre of the dry cloth of continuous fiber for 1000 grams/
Square meter, fiber number 1200tex.
Embodiment 9
Composite A 9 is prepared according to the method for embodiment 1, unlike, the fiber number of the dry cloth of continuous fiber is 30tex.
Embodiment 10
Composite A 10 is prepared according to the method for embodiment 1, unlike, in sheet molding compound, unsaturated polyester resin
Content for 23 weight %, the content of polystyrene is 14.4 weight %, and the content of modified calcium carbonate is 35 weight %, hydroxide
The content of aluminium is 0.7 weight %, and the content of zinc stearate is 0.8 weight %, and the content of magnesia is 0.8 weight %, peroxidating
The content of t-butyl perbenzoate is 0.3 weight %, and the content of short glass fiber is 25 weight %.
Comparative example 1
According to the method for embodiment 1, the difference is that, it is not laid with the dry cloth of continuous fiber up and down in sheet molding compound, i.e.,
Mold is first warming up to 150 DEG C, then sheet molding compound is put and in a mold, controls the thickness of sheet molding compound as 3mm, finally
Curing process 3min is molded under 150 DEG C, 5Mpa, obtains composite material D1.
Test example
(1) to the appearance of composite material D1 that the obtained composite A 1-A10 of embodiment 1-10 and comparative example 1 are obtained into
Row observation, the results are shown in Table 1.
(2) bending property measures：The composite material that method testing example 1-10 according to GB/T 1449-2005 is obtained
The bending strength and bending modulus for the composite material D1 that A1-A10 and comparative example 1 obtain.It the results are shown in Table 1.
(3) tensile property measures：The composite material that method testing example 1-10 according to GB/T 1447-2005 is obtained
The tensile strength of composite material D1 that A1-A10 and comparative example 1 obtain.It the results are shown in Table 1.
(4) impact property measures：The composite material that method testing example 1-10 according to GB/T 1451-2005 is obtained
The impact flexibility of composite material D1 that A1-A10 and comparative example 1 obtain.It the results are shown in Table 1.
(5) surface roughness measurement：The composite wood that method testing example 1-10 according to GB/T 3505-2000 is obtained
The surface roughness of composite material D1 that material A1-A10 and comparative example 1 obtain.It the results are shown in Table 1.
Table 1
Embodiment and comparative example each in table 1 is relatively understood (including preparation process and result), preparation method of the invention
Middle SMC material only need accurately to cut the dry cloth of continuous fiber without accurately cutting, and laying can arbitrarily adjust placed position, system
It is standby simple for process, and can ensure the good mechanical performance for the composite material that there are continuous lod in all positions, obtain, and
Appearance is good, is visible by naked eyes defect.
By the results contrast of embodiment 1 in table 1 and embodiment 4 it is found that when the upper and lower surface in sheet molding compound is laid with
During the dry cloth of continuous fiber, the mechanical property of composite material obtained can be further improved.
By the results contrast of embodiment 1 in table 1 and embodiment 5-9 it is found that when the grammes per square metre of the dry cloth of continuous fiber is 120-600
When grams per square meter, fiber number are 30-600tex, it can obtain having both the compound of excellent mechanical property, appearance and surface roughness performance
Material when the grammes per square metre of the dry cloth of continuous fiber is 150-300 grams per square meters, fiber number is 50-250tex, can be obtained further simultaneous
The composite material of the more excellent mechanical property of tool, appearance and surface roughness performance.
By the results contrast of embodiment 1 in table 1 and embodiment 10 it is found that when the content of chopped strand in sheet molding compound is
During 5-18 weight %, the appearance of composite material and surface roughness performance obtained can be further improved.
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above
Detail, within the scope of the technical concept of the present invention, a variety of simple variants can be carried out to technical scheme of the present invention, this
A little simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (10)
1. a kind of preparation method of composite material, which is characterized in that this method includes：First sheet is placed on the dry cloth of continuous fiber
Then gained continuous fiber cloth is laid in a mold, carries out molding curing process by moulding compound；Or
First the dry cloth of continuous fiber is laid in a mold, then sheet molding compound is placed on the dry cloth of continuous fiber, is molded
Curing process.
2. according to the method described in claim 1, wherein, this method further includes：Before molding curing process is carried out, in sheet
The dry cloth of continuous fiber is laid with above moulding compound.
3. method according to claim 1 or 2, wherein, the grammes per square metre of the dry cloth of continuous fiber for 100-1000 grams/it is flat
Rice, preferably 120-600 grams per square meters, further preferably 150-300 grams per square meters.
4. according to the method described in any one in claim 1-3, wherein, the fiber number of the dry cloth of continuous fiber is 30-
1200tex, preferably 30-600tex, further preferably 50-250tex.
5. according to the method described in any one in claim 1-4, wherein, the sheet molding placed on the dry cloth of continuous fiber
The thickness of material is 1-6mm, preferably 2-4mm.
6. according to the method described in any one in claim 1-5, wherein, the sheet molding compound contains unsaturated polyester (UP) tree
Fat, low shrinkage additive, modified calcium carbonate, aluminium hydroxide, releasing agent, thickener, curing agent and chopped strand, with the sheet
On the basis of the weight of moulding compound, the content of unsaturated polyester resin is 14-28 weight %, and the content of low shrinkage additive is 10-
16 weight %, the content of modified calcium carbonate is 35-50 weight %, and the content of aluminium hydroxide is 0.2-1 weight %, and releasing agent contains
It measures as 0.5-1 weight %, the content of thickener is 0.2-1 weight %, and the content of curing agent is 0.1-0.5 weight %, and be chopped fibre
The content of dimension is 5-18 weight %.
7. according to the method described in claim 6, wherein, the low shrinkage additive is polystyrene, saturated polyester and acetic acid
At least one of vinyl；And/or
The releasing agent is zinc stearate and/or calcium stearate；And/or
The thickener is magnesia；And/or
The curing agent is peroxidized t-butyl perbenzoate；And/or
The material of the dry cloth of continuous fiber is carbon fibre, glass, basalt or aramid fiber.
8. the method described according to claim 6 or 7, wherein, the material of the chopped strand is carbon fibre, glass, basalt or
Aramid fiber.
9. according to the method described in any one in claim 1-8, wherein, the condition of the molding curing process includes：Temperature
It is 140-160 DEG C to spend, pressure 1-10Mpa, time 1-6min.
10. the composite material that any one the method is prepared in claim 1-9.
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|---|---|---|---|---|
| US4207282A (en) * | 1978-06-01 | 1980-06-10 | Armco Inc. | Method for molding reinforced polymeric articles |
| JPH0872186A (en) * | 1994-09-06 | 1996-03-19 | Mitsubishi Plastics Ind Ltd | Fiber reinforced resin unit plate, and manufacture thereof |
| JPH08323924A (en) * | 1995-05-30 | 1996-12-10 | Mitsubishi Plastics Ind Ltd | Unit panel made of fiber reinforced resin |
| CN103552257A (en) * | 2013-10-24 | 2014-02-05 | 浙江长兴四达复合材料有限公司 | Method for manufacturing high-strength high flame retardance glass reinforced plastic composite material FRP (Fiber Reinforce Plastic) plate |
| CN105885376A (en) * | 2016-06-16 | 2016-08-24 | 无锡新宏泰电器科技股份有限公司 | Flaky molding material and preparation method thereof |
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2016
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4207282A (en) * | 1978-06-01 | 1980-06-10 | Armco Inc. | Method for molding reinforced polymeric articles |
| JPH0872186A (en) * | 1994-09-06 | 1996-03-19 | Mitsubishi Plastics Ind Ltd | Fiber reinforced resin unit plate, and manufacture thereof |
| JPH08323924A (en) * | 1995-05-30 | 1996-12-10 | Mitsubishi Plastics Ind Ltd | Unit panel made of fiber reinforced resin |
| CN103552257A (en) * | 2013-10-24 | 2014-02-05 | 浙江长兴四达复合材料有限公司 | Method for manufacturing high-strength high flame retardance glass reinforced plastic composite material FRP (Fiber Reinforce Plastic) plate |
| CN105885376A (en) * | 2016-06-16 | 2016-08-24 | 无锡新宏泰电器科技股份有限公司 | Flaky molding material and preparation method thereof |
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Application publication date: 20180703 |