CN106674945A - Method for modifying SMC (Sheet Molding Compound) - Google Patents
Method for modifying SMC (Sheet Molding Compound) Download PDFInfo
- Publication number
- CN106674945A CN106674945A CN201611261125.5A CN201611261125A CN106674945A CN 106674945 A CN106674945 A CN 106674945A CN 201611261125 A CN201611261125 A CN 201611261125A CN 106674945 A CN106674945 A CN 106674945A
- Authority
- CN
- China
- Prior art keywords
- resin paste
- carbon fiber
- smc
- sheet shape
- moulding compound
- 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.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/06—Unsaturated polyesters
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/003—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor characterised by the choice of material
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/24—Calendering
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
- B29C2043/5816—Measuring, controlling or regulating temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
- B29K2067/06—Unsaturated polyesters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The invention discloses a method for modifying an SMC (Sheet Molding Compound), and belongs to the technical field of novel materials. A carbon fiber chopping machine is designed and mounted at the front end of a glass fiber chopping machine on a common SMC production line; before glass fiber is cut and settled, carbon fiber is settled on a lower protective film with resin paste by the same method, and then the glass fiber is chopped and settled; the lower protective film with the resin paste, the carbon fiber and the glass fiber and an upper protective film with resin paste are soaked and combined together; a series of pressing rollers are adopted for rolling to integrally fuse the carbon fiber, the glass fiber and the resin paste together, thus forming a novel modified enhanced SMC. According to the method disclosed by the invention, on the basis of a common SMC production process, a high-performance composite enhanced automobile part material is molded by the use of the chopped carbon fiber,, so that the tensile strength, the impact strength, the compression strength and the bending strength of an SMC automobile part are all obviously improved.
Description
Technical field
The invention belongs to technical field of novel materials, especially relate to a kind of be modified SMC sheet shape moulding compound
Method.
Background technology
At present, novel light bluk recombination reinforcing material has obtained the application of wide hair in many fields.For example：Aircraft, rocket, dress
First car, scounting aeroplane, speedboat, aircraft carrier, ships that transport, racing car, truck, car, high ferro train, light rail subway, new energy vapour
Car etc..NEW TYPE OF COMPOSITE strengthens light material, and its advantage for protruding is that density is small, light weight, modulus is high, intensity is high, rigidity
Greatly.Using light material process auto parts and components, compared with metal automobile parts, than metallic element loss of weight 30%~
40%.Its intensity is 3 times~4 times of steel, is 1.5 times of Al-alloy products.The statistics of 2015, Chinese average vehicle
Hundred kilometric fuel consumption pers be 6.9 liters, every kilometer of CO2Discharge capacity is 162 grams.And average 5.2 liters of the kilometric fuel consumption per of European Union member countries hundred,
Every kilometer of CO2Discharge capacity is only 95 grams.China has been now the maximum country of the consumption of automobile production in the world, from environmental protection and warp
From the aspect of Ji, the target that Chinese automobile energy-saving and emission-reduction are formulated is that, to the year two thousand twenty, average hundred kilometers of oil consumption controls of Chinese automobile exist
5.0 liters, every kilometer of CO2Discharge capacity is controlled at 118 grams.By 2025, hundred kilometers of oil consumption controls of automotive average were every public at 4.5 liters
In CO2Discharge capacity drops to 106 grams.This ambitious goal is realized, automotive light weight technology is imperative.Novel light bluk recombination strengthening material
Material light weight, intensity high, high temperature resistant, corrosion-resistant, sound-insulating and heat-insulating, high performance-price ratio, are a kind of new materials of energy-conserving and environment-protective, not
In the automobile industry development for coming, will be widely used.However, as SMC sheet moulding material production technology is constantly ripe, its mould
Molded technology has also obtained quick development, according to foreign statistic, in the various shaping works of fiber-reinforced resin matrix compound material
In skill, the occupation rate of SMC die press technology for forming has been up to more than 42%, occupies first of various moulding process.Application on automobile
Have vehicle body, engine enclosure plate, bonnet inner panel, front bumper, beater or beat-up, back buffer beam, inner plate of car door, luggage-boot lid,
Instrument board, deflector, chair framework, skylight board, roof, battery carrier etc..Therefore being needed badly in the middle of prior art will one kind
New technical scheme solves this problem.
The content of the invention
The technical problems to be solved by the invention are：A kind of method being modified to SMC sheet shape moulding compound is provided, general
On the basis of logical SMC sheet shape molding material manufacturing technique, using chopped carbon fiber, zero, high performance composite strengthening automobile is molded out
Part material, makes SMC sheet shape moulding compound auto parts and components tensile strength, impact strength, compressive strength, bending strength all obvious
Improve.
A kind of method being modified to SMC sheet shape moulding compound, it is characterized in that：Comprise the following steps, and according to the following steps
Sequentially carry out,
Step one, unsaturated polyester resin is taken for matrix material, with low shrinkage additive polystyrene PS-15, the interior demoulding
Agent zinc stearate, initiator methyl ethyl ketone peroxide, curing agent cobalt naphthenate, thickener MgO, coupling agent silane, crosslinking agent methyl
Methyl acrylate, the aluminium of polymerization inhibitor hydroxide two, filler CaCO3, supplemented by dispersing aid BYK-W996 and flame retardant LS-SMC
Material is helped, auto parts and components resin paste is made；
Step 2, make the PEF diaphragm debatching of two-layer up and down of resin paste respectively by uncoiling machine；To be set by scraper
Fat paste is equably scratched on polyethylene protective film；The lower section that lower diaphragm with resin paste passes through carbon fiber chopping machine, will
Carbon fiber after being chopped is deposited on the lower diaphragm with resin paste；Lower diaphragm with resin paste and chopped carbon fiber enters
Be deposited to the glass fibre after being chopped on lower diaphragm by the lower section of glass fiber chopping machine by one step；
Step 3, by conveyer, will carry the lower diaphragm of resin paste, chopped carbon fiber and short glass fiber with
Upper protective film with resin paste enters into dipping recombination region, wherein by chopped carbon fiber and short glass fiber in resin paste
The centre position of diaphragm under upper protective film and resin paste；Rolled by more than one pressure roller, will with resin paste, be chopped
The lower diaphragm of carbon fiber and short glass fiber combines together with the upper protective film with resin paste, is made a kind of new mould
The special modified enhancing SMC sheet shape moulding compound of pressure auto parts and components.
Step 4, using winder by the special modified enhancing SMC sheet shape moulding compound system of new molding auto parts and components
Into certain volume finished product long or product is set to enter material storing box,
The modified enhancing SMC sheet shape moulding compound is sent into the curing room with air blower, in 35 DEG C~40 DEG C of bar of constant temperature
Under part, deposit 8 hours~10 hours, to thicken degree and result that curve determines thickening, until SMC sheet shape moulding compound viscosity system
Number can cut untill weighing and molding between 30 centipoise~100 centipoises.
The addition of the chopped carbon fiber is the 5%~20% of fiber total amount of adding.
By above-mentioned design, the present invention can bring following beneficial effect：It is a kind of that SMC sheet shape moulding compound is changed
Property method, on the basis of common SMC sheet shape molding material manufacturing technique, using chopped carbon fiber, be molded out high performance multiple
Enhancing auto parts and components material is closed, makes SMC sheet shape moulding compound auto parts and components tensile strength, impact strength, compressive strength curved
Qu Qiangdu is significantly improved.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the present invention is further illustrated：
Fig. 1 is a kind of preparation technology schematic process flow diagram of the method being modified to SMC sheet shape moulding compound of the present invention.
Fig. 2 is a kind of preparation technology schematic flow sheet of the method being modified to SMC sheet shape moulding compound of the present invention.
Specific embodiment
A kind of method being modified to SMC sheet shape moulding compound, it is characterized in that：Comprise the following steps, and following steps are suitable
It is secondary to carry out,
Step one, unsaturated polyester resin is taken for matrix material, with low shrinkage additive polystyrene PS-15, the interior demoulding
Agent zinc stearate, initiator methyl ethyl ketone peroxide, curing agent cobalt naphthenate, thickener MgO, coupling agent silane, crosslinking agent methyl
Methyl acrylate, the aluminium of polymerization inhibitor hydroxide two, filler CaCO3, supplemented by dispersing aid BYK-W996 and flame retardant LS-SMC
Material is helped, auto parts and components resin paste is made；
Step 2, make the PEF diaphragm debatching of two-layer up and down of resin paste respectively by uncoiling machine；To be set by scraper
Fat paste blade coating is on polyethylene protective film；The lower section that lower diaphragm with resin paste passes through carbon fiber chopping machine, after being chopped
Carbon fiber be deposited on the lower diaphragm with resin paste；Lower diaphragm with resin paste and chopped carbon fiber is further passed through
The lower section of glass fiber chopping machine is crossed, the glass fibre after being chopped is deposited on lower diaphragm；
Step 3, by conveyer, will carry the lower diaphragm of resin paste, chopped carbon fiber and short glass fiber with
Upper protective film with resin paste enters into dipping recombination region, wherein by chopped carbon fiber and short glass fiber in resin paste
The centre position of diaphragm under upper protective film and resin paste；Rolled by more than one pressure roller, will with resin paste, be chopped
The lower diaphragm of carbon fiber and short glass fiber combines together with the upper protective film with resin paste, is made a kind of new mould
The special modified enhancing SMC sheet shape moulding compound of pressure auto parts and components.
Step 4, using winder by the special modified enhancing SMC sheet shape moulding compound system of new molding auto parts and components
Into certain volume finished product long or product is set to enter material storing box,
The modified enhancing SMC sheet shape moulding compound is sent into the curing room with air blower, in 35 DEG C~40 DEG C of bar of constant temperature
Under part, deposit 8 hours~10 hours, to thicken degree and result that curve determines thickening, until SMC sheet shape moulding compound viscosity system
Number can cut untill weighing and molding between 30 centipoise~100 centipoises.
The addition of the chopped carbon fiber is the 5%~20% of fiber total amount of adding.
The present invention is only needed on common SMC sheet shape moulding compound production line, in the front end of glass fiber chopping machine, design
One carbon fiber chopping machine is installed, before glass fibre cutting, sedimentation, using same method, allows carbon fiber to be deposited in band
Have on the lower diaphragm of resin paste, glass chopped sedimentation is then carried out again；With resin paste, carbon fiber, glass fibre
Lower diaphragm impregnates compound with the upper protective film with resin paste jointly, is then rolled using a series of pressure rollers, makes carbon fiber, glass
Glass fiber, resin paste combine together, form new modified enhancing SMC sheet shape moulding compound.
By modified enhancing SMC sheet shape moulding compound, after being molded into auto parts and components, with common SMC sheet shape moulding compound
The auto parts and components mechanical strength of molding compares, and its tensile strength, bending strength, compressive strength and impact strength can divide
It is indescribably high by 20%~70%.This new modified enhancing SMC sheet moulding material, its mechanical performance is fully able to meet different purposes
Technical property requirements.It is applied to war products, it is also possible to be applied to the vehicles, apply also for other industries.
Common SMC sheet shape moulding compound and new modified enhancing SMC sheet shape moulding compound technology application can on exist very
Big difference, technology application energy index comparing result such as following table.
Table：Common SMC sheet moulding material and new modified enhancing SMC sheet moulding material comparing result
| Common SMC sheet moulding material | The modified strong SMC sheet moulding material of energy | |
| Density | 1.7—1.9g/cm3 | 1.5—1.7 |
| Water absorption rate | ≤15mg | ≤15mg |
| Molding shrinkage | ≤ 0.15% | ≤ 0.15% |
| Heat-resistant deforming temperature | ≥220℃ | ≥250℃ |
| It is permanent heat-resisting | ≥150℃ | ≥180℃ |
| Impact strength | ≥60ks/m2 | ≥90ks/m2 |
| Bending strength | ≥160Mpa | ≥200Mpa |
| Compressive strength | ≥160Mpa | ≥180Mpa |
| Tensile strength | ≥160Mpa | ≥210Mpa |
Claims (3)
1. a kind of method being modified to SMC sheet shape moulding compound, it is characterized in that：Comprise the following steps, and it is suitable according to the following steps
It is secondary to carry out,
Step one, unsaturated polyester resin is taken for matrix material, it is hard with low shrinkage additive polystyrene PS-15, inner pattern releasing agent applicable
Resin acid zinc, initiator methyl ethyl ketone peroxide, curing agent cobalt naphthenate, thickener MgO, coupling agent silane, crosslinking agent metering system
Sour methyl esters, the aluminium of polymerization inhibitor hydroxide two, filler CaCO3, dispersing aid BYK-W996 and flame retardant LS-SMC for auxiliary material
Material, is made auto parts and components resin paste；
Step 2, make the PEF diaphragm debatching of two-layer up and down of resin paste respectively by uncoiling machine；By scraper by resin paste
Equably scratch on polyethylene protective film；The lower section that lower diaphragm with resin paste passes through carbon fiber chopping machine, will be chopped
Carbon fiber afterwards is deposited on the lower diaphragm with resin paste；Lower diaphragm with resin paste and chopped carbon fiber is further
By the lower section of glass fiber chopping machine, the glass fibre after being chopped is deposited on lower diaphragm；
Step 3, by conveyer, the lower diaphragm of resin paste, chopped carbon fiber and short glass fiber will be carried and carried
The upper protective film of resin paste enters into dipping recombination region, wherein by chopped carbon fiber and short glass fiber resin paste upper guarantor
The centre position of diaphragm under cuticula and resin paste；Rolled by more than one pressure roller, will be fine with resin paste, the carbon that is chopped
The lower diaphragm of peacekeeping short glass fiber combines together with the upper protective film with resin paste, is made a kind of new molding vapour
The special modified enhancing SMC sheet shape moulding compound of car parts.
Step 4, the special modified enhancing SMC sheet shape moulding compound of new molding auto parts and components is made one using winder
Fixed volume finished product long makes product enter material storing box.
2. a kind of method being modified to SMC sheet shape moulding compound according to claim 1, it is characterized in that：It is described modified
Enhancing SMC sheet shape moulding compound is sent into the curing room with air blower, under conditions of 35 DEG C~40 DEG C of constant temperature, storage 8 hours~
10 hours, with thicken curve determine thickening degree to SMC sheet shape moulding compound viscosity coefficient between 30 centipoise~100 centipoises,
Cutting is carried out to weigh and mold.
3. a kind of method being modified to SMC sheet shape moulding compound according to claim 1, it is characterized in that：It is described to be chopped
The addition of carbon fiber is the 5%~20% of fiber total amount of adding.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610838540 | 2016-09-22 | ||
| CN2016108385406 | 2016-09-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106674945A true CN106674945A (en) | 2017-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611261125.5A Pending CN106674945A (en) | 2016-09-22 | 2016-12-30 | Method for modifying SMC (Sheet Molding Compound) |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107418172A (en) * | 2017-06-17 | 2017-12-01 | 常州新区金利宝塑料制品有限公司 | A kind of sheet molding compound proprietary material |
| CN109181256A (en) * | 2018-08-28 | 2019-01-11 | 江苏澳盛复合材料科技有限公司 | A kind of unsaturated resin composition and preparation method thereof |
| CN109435268A (en) * | 2018-10-24 | 2019-03-08 | 杭州幽若科技有限公司 | A kind of full-automatic assembly line SMC well lid production technology |
| CN114643754A (en) * | 2022-03-28 | 2022-06-21 | 贵州至当科技有限公司 | Fabric-reinforced CF-SMC sheet and preparation method thereof |
| CN114701227A (en) * | 2022-03-28 | 2022-07-05 | 贵州至当科技有限公司 | 0-degree or 90-degree continuous fiber reinforced CF-SMC sheet and preparation method thereof |
| CN114957952A (en) * | 2022-06-02 | 2022-08-30 | 深圳市万维博新能源技术有限公司 | SMC-A sheet material formula and technology applied to new energy electric vehicle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102634184A (en) * | 2012-05-17 | 2012-08-15 | 镇江育达复合材料有限公司 | SMC (sheet molding compound) material for passenger car covering parts and preparation method thereof |
| CN105504695A (en) * | 2016-02-01 | 2016-04-20 | 四川远鸣科技有限公司 | High-strength high-mold corrosion-resistant vinyl ester resin SMC sheet molding compound and preparation method thereof |
| CN105907046A (en) * | 2016-05-17 | 2016-08-31 | 刘良成 | SMC (sheet molding compound) material and preparation method thereof |
-
2016
- 2016-12-30 CN CN201611261125.5A patent/CN106674945A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102634184A (en) * | 2012-05-17 | 2012-08-15 | 镇江育达复合材料有限公司 | SMC (sheet molding compound) material for passenger car covering parts and preparation method thereof |
| CN105504695A (en) * | 2016-02-01 | 2016-04-20 | 四川远鸣科技有限公司 | High-strength high-mold corrosion-resistant vinyl ester resin SMC sheet molding compound and preparation method thereof |
| CN105907046A (en) * | 2016-05-17 | 2016-08-31 | 刘良成 | SMC (sheet molding compound) material and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107418172A (en) * | 2017-06-17 | 2017-12-01 | 常州新区金利宝塑料制品有限公司 | A kind of sheet molding compound proprietary material |
| CN109181256A (en) * | 2018-08-28 | 2019-01-11 | 江苏澳盛复合材料科技有限公司 | A kind of unsaturated resin composition and preparation method thereof |
| CN109435268A (en) * | 2018-10-24 | 2019-03-08 | 杭州幽若科技有限公司 | A kind of full-automatic assembly line SMC well lid production technology |
| CN114643754A (en) * | 2022-03-28 | 2022-06-21 | 贵州至当科技有限公司 | Fabric-reinforced CF-SMC sheet and preparation method thereof |
| CN114701227A (en) * | 2022-03-28 | 2022-07-05 | 贵州至当科技有限公司 | 0-degree or 90-degree continuous fiber reinforced CF-SMC sheet and preparation method thereof |
| CN114957952A (en) * | 2022-06-02 | 2022-08-30 | 深圳市万维博新能源技术有限公司 | SMC-A sheet material formula and technology applied to new energy electric vehicle |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170517 |
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