CN108329713A - A kind of class-A surfaces SMC moulding compounds and its manufacturing method - Google Patents
A kind of class-A surfaces SMC moulding compounds and its manufacturing method Download PDFInfo
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- CN108329713A CN108329713A CN201711382171.5A CN201711382171A CN108329713A CN 108329713 A CN108329713 A CN 108329713A CN 201711382171 A CN201711382171 A CN 201711382171A CN 108329713 A CN108329713 A CN 108329713A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/043—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with glass fibres
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2300/00—Characterised by the use of unspecified polymers
- C08J2300/10—Polymers characterised by the presence of specified groups, e.g. terminal or pendant functional groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
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Abstract
The invention discloses a kind of class-A surfaces SMC moulding compounds, including following raw material：110 130 parts of high activity unsaturated-resin, 10 20 parts of toughened resin, 10 15 parts of inner pattern releasing agent applicable, 25 parts of wetting and dispersing auxiliary agent, 10 30 parts of ultra-fine grain polyethylene powders, 350 400 parts of pearl filler, prevents 25 parts of auxiliary agent of phase separation, 1 1.5 parts of crosslinking agent, 13 parts of polymerization inhibitor, 25 parts of thickener and alkali-free glass fibre, the alkali-free glass fibre content from accounting for the 25 30% of gross mass at 90 100 parts of low shrinkage additive.The present invention shrinks the excellent resin and low shrinkage additive of matching by selection, increase rheology modifier and improve Flow of Goods and Materials uniformity, increase ultra-fine grain polyethylene powders, improves dimensionally stable and contraction, particle shape and the suitable filler of whiteness improve product contraction and appearance.
Description
Technical field
The present invention relates to technical field of composite materials, more particularly to a kind of class-A surfaces SMC moulding compounds and its manufacturing method.
Background technology
Thermosetting resin glass fibre reinforced composites, sheet molding compound（Sheet Molding Compound are referred to as
SMC）, be one kind of glass fibre reinforced composion, primary raw material by unsaturated-resin, low shrinkage additive, glass fibre,
Filler and various auxiliary agents composition, it primarily occur ins Europe in earlier 1960s, in or so nineteen sixty-five, beautiful, day phase
After having developed this technique, China has introduced external advanced SMC production lines and production technology, as SMC exists the end of the eighties
The application of domestic every field is more and more extensive, and requirement of the host producer to product strength and surface is higher and higher, mating manufacturer
Demand to high-quality class-A surfaces SMC sheet is more urgent, general with the raising of promotion and the environmental requirement of labor cost
For logical SMC products since yield rate is low, surface defect is more, needs the processes such as largely to process, repair, polish before paint spraying,
Have become the common pain spot of mating manufacturer.For this purpose, it is proposed that a kind of class-A surfaces SMC moulding compounds and its manufacturing method.
Invention content
The main purpose of the present invention is to provide a kind of class-A surfaces SMC moulding compounds and its manufacturing methods, can effectively solve
The problems in background technology.
To achieve the above object, the technical solution that the present invention takes is：
A kind of class-A surfaces SMC moulding compounds, including following raw material：110-130 parts of high activity unsaturated-resin, lower shrinkage
90-100 parts of additive, 10-20 parts of toughened resin, 10-15 parts of inner pattern releasing agent applicable, 2-5 parts of wetting and dispersing auxiliary agent, the poly- second of ultra-fine grain
10-30 parts of alkene powder, 350-400 parts of pearl filler prevent 2-5 parts of auxiliary agent of phase separation, 1-1.5 parts of crosslinking agent, polymerization inhibitor 1-3
Part, 2-5 parts of thickener and alkali-free glass fibre, the alkali-free glass fibre content account for the 25-30% of gross mass.
Further, a kind of class-A surfaces SMC moulding compounds, including following raw material：High activity unsaturated-resin 110
Part, 90 parts of low shrinkage additive, 10 parts of toughened resin, 10 parts of inner pattern releasing agent applicable, 2 parts of wetting and dispersing auxiliary agent, ultra-fine grain polyethylene
10 parts of powder, 350 parts of pearl filler prevent 2 parts of auxiliary agent of phase separation, 1 part of crosslinking agent, 1 part of polymerization inhibitor, 2 parts of thickener and nothing
Alkali containing glass fibre, the alkali-free glass fibre content account for the 25% of gross mass.
Further, a kind of class-A surfaces SMC moulding compounds, manufacturing method include the following steps：
A, by alkali-free glass fibre, high activity unsaturated-resin, toughened resin, low shrinkage additive and ultra-fine grain polyethylene powder
End is weighed by certain deal, will be weighed the material completed and is placed in blender, control blender rotating speed is 800-
1000rpm, mixing time are 10-20 minutes；
B, inner pattern releasing agent applicable, wetting dispersing agent are added in the mixture completed to the stirring of step a blenders, are prevented phase separation agent, are handed over
Join agent and polymerization inhibitor, control blender rotating speed is 800-900rpm, and mixing time is 3-6 minutes；
C, pearl filler is added in the mixture completed to the stirring of step b blenders, control blender rotating speed is 900-
1000rpm, mixing time are 5-7 minutes；
D, the mixture that step c stirrings are completed is taken out and is carried out viscosity test, obtain spare after tested viscosity is 10000CP；
E, the mixture addition thickener that step d is obtained is subjected to thickening processing, 40-45 DEG C of thickening temperature thickens time 10-16
Hour；
F, the mixture that step e processing is completed is subjected to production line coating, material delivery system needs and production line in production process
The equilibrium of supply and demand, front and back pressure roller is kept to adjust suitable pressure according to glass fiber content, it is 0.8-1.2MPA, outlet to make its inlet pressure
Pressure is 1.4-1.6MPA, and machine speed control is 8-10m/min, both obtains finished product, is packed.
Compared with prior art, the present invention has the advantages that：The present invention is excellent by selection contraction matching
Resin and low shrinkage additive increase rheology modifier and improve Flow of Goods and Materials uniformity, increase ultra-fine grain polyethylene powders, change
Kind dimensionally stable and contraction, particle shape and the suitable filler of whiteness improve product contraction and appearance.
Specific implementation mode
To make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, with reference to
Specific implementation mode, the present invention is further explained.
Embodiment 1：
A kind of class-A surfaces SMC moulding compounds, including following raw material：110 parts of high activity unsaturated-resin, lower shrinkage addition
90 parts of agent, 10 parts of toughened resin, 10 parts of inner pattern releasing agent applicable, 2 parts of wetting and dispersing auxiliary agent, 10 parts of ultra-fine grain polyethylene powders, carbonic acid
350 parts of calcium filler prevents 2 parts of auxiliary agent of phase separation, 1 part of crosslinking agent, 1 part of polymerization inhibitor, 2 parts of thickener and alkali-free glass fibre, institute
State alkali-free glass fibre content accounts for gross mass 25%.
A kind of class-A surfaces SMC moulding compounds, manufacturing method include the following steps：
A, by alkali-free glass fibre, high activity unsaturated-resin, toughened resin, low shrinkage additive and ultra-fine grain polyethylene powder
End is weighed by certain deal, will be weighed the material completed and is placed in blender, control blender rotating speed is 800rpm, is stirred
It is 10 minutes to mix the time；
B, inner pattern releasing agent applicable, wetting dispersing agent are added in the mixture completed to the stirring of step a blenders, are prevented phase separation agent, are handed over
Join agent and polymerization inhibitor, control blender rotating speed is 800rpm, and mixing time is 3 minutes；
C, pearl filler is added in the mixture completed to the stirring of step b blenders, control blender rotating speed is 900rpm, is stirred
It is 5 minutes to mix the time；
D, the mixture that step c stirrings are completed is taken out and is carried out viscosity test, obtain spare after tested viscosity is 10000CP；
E, the mixture addition thickener that step d is obtained is subjected to thickening processing, 40 DEG C of thickening temperature thickens 10 hours time；
F, the mixture that step e processing is completed is subjected to production line coating, material delivery system needs and production line in production process
The equilibrium of supply and demand, front and back pressure roller is kept to adjust suitable pressure according to glass fiber content, it is 0.8MPA, outlet pressure to make its inlet pressure
For 1.4MPA, machine speed control is 8m/min, both obtains finished product, is packed.
Embodiment 2：
A kind of class-A surfaces SMC moulding compounds, including following raw material：120 parts of high activity unsaturated-resin, lower shrinkage addition
95 parts of agent, 15 parts of toughened resin, 13 parts of inner pattern releasing agent applicable, 4 parts of wetting and dispersing auxiliary agent, 20 parts of ultra-fine grain polyethylene powders, carbonic acid
380 parts of calcium filler prevents 4 parts of auxiliary agent of phase separation, 1.3 parts of crosslinking agent, 2 parts of polymerization inhibitor, 4 parts of thickener and alkali-free glass fibre,
The alkali-free glass fibre content accounts for the 28% of gross mass.
A kind of class-A surfaces SMC moulding compounds, manufacturing method include the following steps：
A, by alkali-free glass fibre, high activity unsaturated-resin, toughened resin, low shrinkage additive and ultra-fine grain polyethylene powder
End is weighed by certain deal, will be weighed the material completed and is placed in blender, control blender rotating speed is 900rpm, is stirred
It is 15 minutes to mix the time；
B, inner pattern releasing agent applicable, wetting dispersing agent are added in the mixture completed to the stirring of step a blenders, are prevented phase separation agent, are handed over
Join agent and polymerization inhibitor, control blender rotating speed is 850rpm, and mixing time is 5 minutes；
C, pearl filler is added in the mixture completed to the stirring of step b blenders, control blender rotating speed is 950rpm, is stirred
It is 6 minutes to mix the time；
D, the mixture that step c stirrings are completed is taken out and is carried out viscosity test, obtain spare after tested viscosity is 10000CP；
E, the mixture addition thickener that step d is obtained is subjected to thickening processing, 43 DEG C of thickening temperature thickens 13 hours time；
F, the mixture that step e processing is completed is subjected to production line coating, material delivery system needs and production line in production process
The equilibrium of supply and demand, front and back pressure roller is kept to adjust suitable pressure according to glass fiber content, it is 1.0MPA, outlet pressure to make its inlet pressure
For 1.5MPA, machine speed control is 9m/min, both obtains finished product, is packed.
Embodiment 3：
A kind of class-A surfaces SMC moulding compounds, including following raw material：130 parts of high activity unsaturated-resin, lower shrinkage addition
100 parts of agent, 20 parts of toughened resin, 15 parts of inner pattern releasing agent applicable, 5 parts of wetting and dispersing auxiliary agent, 30 parts of ultra-fine grain polyethylene powders, carbonic acid
400 parts of calcium filler prevents 5 parts of auxiliary agent of phase separation, 1.5 parts of crosslinking agent, 3 parts of polymerization inhibitor, 5 parts of thickener and alkali-free glass fibre,
The alkali-free glass fibre content accounts for the 30% of gross mass.
A kind of class-A surfaces SMC moulding compounds, manufacturing method include the following steps：
A, by alkali-free glass fibre, high activity unsaturated-resin, toughened resin, low shrinkage additive and ultra-fine grain polyethylene powder
End is weighed by certain deal, will be weighed the material completed and is placed in blender, and control blender rotating speed is 1000rpm,
Mixing time is 20 minutes；
B, inner pattern releasing agent applicable, wetting dispersing agent are added in the mixture completed to the stirring of step a blenders, are prevented phase separation agent, are handed over
Join agent and polymerization inhibitor, control blender rotating speed is 900rpm, and mixing time is 6 minutes；
C, pearl filler is added in the mixture completed to the stirring of step b blenders, control blender rotating speed is 1000rpm,
Mixing time is 7 minutes；
D, the mixture that step c stirrings are completed is taken out and is carried out viscosity test, obtain spare after tested viscosity is 10000CP；
E, the mixture addition thickener that step d is obtained is subjected to thickening processing, 45 DEG C of thickening temperature thickens 16 hours time；
F, the mixture that step e processing is completed is subjected to production line coating, material delivery system needs and production line in production process
The equilibrium of supply and demand, front and back pressure roller is kept to adjust suitable pressure according to glass fiber content, it is 1.2MPA, outlet pressure to make its inlet pressure
For 1.6MPA, machine speed control is 10m/min, both obtains finished product, is packed.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (3)
1. a kind of class-A surfaces SMC moulding compounds, which is characterized in that including following raw material：High activity unsaturated-resin 110-
130 parts, 90-100 parts of low shrinkage additive, 10-20 parts of toughened resin, 10-15 parts of inner pattern releasing agent applicable, 2-5 parts of wetting and dispersing auxiliary agent,
10-30 parts of ultra-fine grain polyethylene powders, 350-400 parts of pearl filler prevent 2-5 parts of auxiliary agent of phase separation, crosslinking agent 1-1.5
Part, 1-3 parts of polymerization inhibitor, 2-5 parts of thickener and alkali-free glass fibre, the alkali-free glass fibre content account for the 25- of gross mass
30%。
2. a kind of class-A surfaces SMC moulding compounds according to claim 1, it is characterised in that：Including following raw material：
110 parts of high activity unsaturated-resin, 90 parts of low shrinkage additive, 10 parts of toughened resin, 10 parts of inner pattern releasing agent applicable, wetting and dispersing auxiliary agent
2 parts, 10 parts of ultra-fine grain polyethylene powders, 350 parts of pearl filler, prevent phase separation 2 parts of auxiliary agent, 1 part of crosslinking agent, polymerization inhibitor
1 part, 2 parts of thickener and alkali-free glass fibre, the alkali-free glass fibre content account for the 25% of gross mass.
3. a kind of class-A surfaces SMC moulding compounds according to claim 1 or 2, which is characterized in that its manufacturing method include with
Lower step：
By alkali-free glass fibre, high activity unsaturated-resin, toughened resin, low shrinkage additive and ultra-fine grain polyethylene powders
It is weighed by certain deal, the material completed will be weighed and be placed in blender, control blender rotating speed is 800-
1000rpm, mixing time are 10-20 minutes；
Inner pattern releasing agent applicable, wetting dispersing agent are added in the mixture completed to the stirring of step a blenders, prevent phase separation agent, crosslinking
Agent and polymerization inhibitor, control blender rotating speed are 800-900rpm, and mixing time is 3-6 minutes；
Pearl filler is added in the mixture completed to the stirring of step b blenders, control blender rotating speed is 900-
1000rpm, mixing time are 5-7 minutes；
The mixture that step c stirrings are completed is taken out and carried out viscosity test, is obtained spare after tested viscosity is 10000CP；
The mixture addition thickener that step d is obtained is subjected to thickening processing, it is small to thicken time 10-16 for 40-45 DEG C of thickening temperature
When；
The mixture that step e processing is completed is subjected to production line coating, material delivery system need to be protected with production line in production process
The equilibrium of supply and demand is held, front and back pressure roller adjusts suitable pressure according to glass fiber content, and it is 0.8-1.2MPA, outlet pressure to make its inlet pressure
Power is 1.4-1.6MPA, and machine speed control is 8-10m/min, both obtains finished product, is packed.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113174126A (en) * | 2021-05-13 | 2021-07-27 | 河北英丽达新材料科技有限公司 | High-performance SMC molding compound and preparation method thereof |
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Application publication date: 20180727 |