CN105754311A - Polyester BMC (bulk molding compound) and preparation method and application thereof - Google Patents
Polyester BMC (bulk molding compound) and preparation method and application thereof Download PDFInfo
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- CN105754311A CN105754311A CN201610150034.8A CN201610150034A CN105754311A CN 105754311 A CN105754311 A CN 105754311A CN 201610150034 A CN201610150034 A CN 201610150034A CN 105754311 A CN105754311 A CN 105754311A
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The invention provides a polyester BMC (bulk molding compound) and a preparation method and application thereof.The polyester BMC is mainly prepared from, by weight, 16-20% of weather-resistant unsaturated polyester resin, 6-10% of a weather-resistant low-shrinkage additive, 45-55% of a filling material, 14-18% of a fibrous material and 2-3% of a weather-resistant pigment.By cooperation and coordination of the components, the polyester BMC is excellent in weather resistance, the forming shrinkage rate is smaller than 0.15%, the water absorption rate is smaller than 0.2%, the thermal deformation temperature is higher than 240 DEG C, and the bending strength is larger than or equal to 200MPa; the polyester BMC is excellent in mechanical performance, insulation resistance is larger than 106ohm, voltage resistance is 4-6KV/mm, arc resistance is larger than 100Sec, electric leakage resistance is larger than 300CTI, and flame retardance can reach a level V0.Therefore, the polyester BMC has an extensive application prospect in fields of electric appliances, instruments, automobile manufacturing, aviation, transportation, architecture and the like.
Description
Technical field
The invention belongs to polymer matrix composites field, relate to a kind of BMC polyester molding compound and its preparation method and application.
Background technology
Moulding compound mainly comprises BMC BMC (Bulk Molding Compound), is that eighties of last century is sent out the sixties
Exhibition get up with the polymer matrix composites of glass fiber reinforcement.BMC polyester molding compound is due to its excellent mechanical performance and excellent
Different electrical property and heat resistance, low-shrinkage and good processing characteristics, can meet the requirement to performance of the various product, the most extensively
Generally for all trades and professions such as electrical equipment, instrument, automobile making, aviation, traffic, buildings.Conventional BMC is mainly with unsaturated polyester
Ester resin, as matrix, is filled other materials, is reinforcing material with glass fibre, coordinates auxiliary material such as lower shrinkage to add simultaneously
Agent, initiator, thickener, releasing agent etc. are made.More excellent in order to obtain performance, purposes widely BMC, the most several
Over Nian, both at home and abroad the characteristic of primary raw material is all being studied by many research institutions and enterprise, the BMC that research and development are modified.
Along with the development of BMC, having penetrated into more field, the industry at boats and ships naval vessels is subject to more and more in recent years
Many attention, ships and light boats navigate by water all the year round among rivers and lakes, deep-sea, ocean, expose to the sun and rain, and bubble salt loses, and working environment is extremely disliked
Bad, therefore it is required that build ships and light boats material is water-fast, salt spray resistance, acid-alkali-corrosive-resisting, resistance to environmental aging etc..
Therefore, develop and a kind of have that to can tolerate the BMC polyester molding compound of adverse circumstances be the problem that this area needs solution badly.
Summary of the invention
For the deficiencies in the prior art, it is an object of the invention to provide a kind of BMC polyester molding compound and preparation method thereof
And application.
For reaching this purpose, the present invention by the following technical solutions:
On the one hand, the present invention provides a kind of BMC polyester molding compound, and described BMC polyester molding compound is mainly by mass percent
Following raw material prepares:
Preferably, described auxiliary agent includes curing agent, releasing agent, thickener, antioxidant and dispersant, described auxiliary agent each
Composition mass percent shared by BMC polyester molding compound raw material is as follows:
As optimal technical scheme, BMC polyester molding compound of the present invention is mainly by the raw material that mass percent is following
Prepare:
BMC polyester molding compound of the present invention is to add novel weatherability insatiable hunger in the agent structure of conventional material
And polyester resin, weather resisteant shrinking agent, weather-proof color, and acid and alkali-resistance salt fog auxiliary agent, improve demoulding flatness, then coordinate
With filler, the new polyester moulding compound that the auxiliary material such as alkali-free glass fibre and carbon fiber is made.This New-type mould plastics pole
Big improve BMC moulding compound service life on boats and ships naval vessels, acid and alkali-resistance, salt fog performance than common BMC moulding compound
Being enhanced about more than once, this material can keep again its original premium properties for a long time simultaneously.
Preferably, described weatherability unsaturated polyester resin is the unsaturated polyester resin of epoxy resin modification.
Preferably, the viscosity of described weatherability unsaturated polyester resin is 1400-1450mPa s, such as 1400mPa
S, 1410mPa s, 1420mPa s, 1430mPa s, 1440mPa s or 1450mPa s.
Described weatherability unsaturated polyester resin has excellent wellability, the performance such as resistance to water, acidproof alkali salt.
Preferably, described weatherability low shrinkage additive is polystyrene, polymethyl methacrylate, polyvinyl acetate
Or any one or the combination of at least two, preferably polystyrene in PET.
Weatherability low shrinkage additive of the present invention has superior contraction and controls, and superior coloring, lubricity is good.
Preferably, described packing material is the hydration oxygen of particle diameter 7-9 μm (such as 7 μm, 7.5 μm, 8 μm, 8.5 μm or 9 μm)
Change aluminium and/or calcium carbonate powder.
Preferably, described hydrated alumina is hibbsite and/or monohydrate alumina.
Preferably, described fibrous material is the composite fibre of glass fibre and carbon fiber.
Preferably, described fibrous material is with alkali-free short glass fiber and chopped polyacrylonitrile carbon fiber as raw material, warp
Cross pre-oxidation, carbonization and prepare.There is cyclisation crosslinking in the pre-oxidation stage in the chain structure of chopped fiber, forms heat-resisting trapezoidal knot
Structure, carbonation stage conjugation forms carbon back face, and carbon back face length is big and ultimately forms graphite-like structure.
Fibrous material light specific gravity of the present invention, intensity is high, acid and alkali-resistance salt corrosion, antifatigue, abrasion performance.
Preferably, described weather-proof color be by 5-15% (such as 5%, 6%, 7%, 8%, 9%, 10%, 11%,
12%, 13%, 14% or 15%) weather-proof color toner and 85-95% (85%, 88%, 90%, 91%, 92%, 93%, 94%
Or 95%) mixing of weatherability monomer-free unsaturated polyester resin mills the mill base made.
Preferably, described curing agent be purity be the peroxidized t-butyl perbenzoate of more than 98%；Its 10 hour half-life
Temperature is 104 DEG C.
Preferably, described releasing agent be particle diameter 150-250 mesh (such as 150 mesh, 170 mesh, 190 mesh, 200 mesh, 220 mesh,
230 mesh, 240 mesh or 250 mesh) calcium stearate or zinc stearate.
Preferably, described thickener is liquid oxidation magnesium, calcium hydroxide or magnesium hydroxide, and liquid oxidation magnesium easily disperses, no
Dust can be produced.Liquid oxidation magnesium can be by being commercially available, such as Luvatol MK35.
Preferably, described antioxidant is 2,6-di-t-butyl Pyrogentisinic Acid, double (3,5-di-tert-butyl-hydroxy phenyl) sulphur
Any one or the combination of at least two in ether or three (2,4-di-tert-butyl-phenyl) phosphite ester；Preferably 2,6-di-t-butyl
Pyrogentisinic Acid, it has good antioxidation, good compatibility, and under processing temperature, antioxidant itself is more stable.
Preferably, described dispersant is BYK-W-996 or BYK-9010, and it is the copolymer solution containing acidic-group,
The mixture of surface reactive material and polymer, its can stable mode plastics, improve mobility, improve release property etc..
The BMC polyester molding compound of the present invention combines the advantage of each composition, and it is by cooperating, mutually between each composition
Promote so that the BMC polyester molding compound obtained has the weatherability of excellence, and anti-swelling, freedom from cracking and ageing resistace all have bright
Aobvious improving, shaping shrinkage rate is low, and heat distortion temperature is high, and bending strength is high, has good mechanical performance, excellent insulating properties with
And anti-flammability etc..
In the present invention, described weatherability refers to material to expose to the open air under the weather conditions such as daylight, cold and hot, wind and rain to keep this
Body physicochemical property does not changes.
In the present invention, in the raw material of described BMC polyester molding compound, each composition sum is 100%.
On the other hand, the invention provides the preparation method of BMC polyester molding compound as described in relation to the first aspect, described preparation
Method comprises the following steps:
(1) unsaturated polyester resin, low shrinkage additive, dispersant and pigment are stirred；
(2) in the compound that step (1) obtains, add curing agent and antioxidant, stirring, then add packing material
And releasing agent, continue stirring；
(3) adding thickener in the compound that step (2) obtains, stirring, the fibrous material then adding 5-10% stirs
After mixing 5-10 minute (such as 5 minutes, 6 minutes, 7 minutes, 8 minutes, 9 minutes or 10 minutes), add residual fiber material and continue
Stirring, obtains described BMC polyester molding compound.
Preferably, the time of step (1) described stirring is 2-10 minute, such as 2 minutes, 3 minutes, 4 minutes, 5 minutes, 6
Minute, 7 minutes, 8 minutes, 9 minutes or 10 minutes.
Preferably, the time of step (2) described stirring is 3-10 minute, such as 3 minutes, 4 minutes, 5 minutes, 6 minutes, 7
Minute, 8 minutes, 9 minutes or 10 minutes.
Preferably, step (2) described continue stirring time be 20-40 minute, such as 20 minutes, 22 minutes, 25 minutes,
28 minutes, 30 minutes, 32 minutes, 35 minutes, 38 minutes or 40 minutes.
Preferably, the time of step (3) described stirring is 10-20 minute, such as 10 minutes, 12 minutes, 14 minutes, 15 points
Clock, 16 minutes, 18 minutes or 20 minutes.
Preferably, step (3) described continue stirring time be 10-20 minute, such as 10 minutes, 12 minutes, 14 minutes,
15 minutes, 16 minutes, 18 minutes or 20 minutes.
Preferably, the preparation of described BMC polyester molding compound is carried out in kneading machine.
In the present invention by specific preparation technology as above so that each composition is sufficiently mixed uniformly, fills between each composition
Tap is touched, and to reach to interact fully, such as, makes carbon fiber and glass fibre can be uniformly distributed among material, improves material
The intensity of material can also be improved, it is achieved that the acid and alkali-resistance salt corrosion to polyester resin is modified, to poly-while the weatherability of material
Ester resin hydrolytic-resistant modified, mixes enhancing modified etc. to the anticorrosive modification of pigment and carbon fiber with glass fibre.
On the other hand, the invention provides BMC polyester molding compound as described in relation to the first aspect in preparing weather resistant materials
Application.The BMC polyester molding compound of the present invention can be used as weather resistant materials or for preparing weather resistant materials, for electrical equipment,
In the every profession and trades such as instrument, automobile making, aviation, traffic, building.
Relative to prior art, the method have the advantages that
The BMC polyester molding compound of the present invention is by cooperating between each composition, mutually coordinated so that BMC polyester mould
Plastics have the weatherability of excellence, and anti-swelling, the freedom from cracking of normal polyester moulding compound and ageing resistace are only 15 years, and this
Anti-swelling, freedom from cracking and the ageing resistace of bright BMC polyester molding compound are 35 years, the low ＜ of shaping shrinkage rate 0.15%,
Water absorption rate ＜ 0.2%, heat distortion temperature ＞ 240 DEG C, bending strength >=200MPa, there is good mechanical performance, insulation opposing
＞ 106Ω, proof voltage performance can reach 4-6KV/mm, and arc resistance >=100Sec, the ＞ of resistance to leakage property 300CTI, anti-flammability is permissible
Arrive V0 level, high comprehensive performance, have a wide range of applications in fields such as electrical equipment, instrument, automobile making, aviation, traffic, buildings
Prospect.
Detailed description of the invention
Technical scheme is further illustrated below by detailed description of the invention.Those skilled in the art should be bright
, the only help of described embodiment understands the present invention, is not construed as the concrete restriction to the present invention.
Embodiment 1
In the present embodiment, the raw material that mass percent is following BMC polyester molding compound is prepared:
Described fibrous material is with alkali-free short glass fiber and chopped polyacrylonitrile carbon fiber as raw material, through pre-oxygen
Change, carbonization and prepared glass fibre and the composite fibre of carbon fiber, described weatherability unsaturated polyester resin is epoxy resin
Modified unsaturated polyester resin, described weatherability low shrinkage additive is polystyrene, and described packing material is particle diameter 7-9 μm
Hydrated alumina, described weather-proof color is by 10% weather-proof color toner and 90% weatherability monomer-free unsaturated polyester (UP) tree
Fat mixing is milled the mill base made, described curing agent be purity be the peroxidized t-butyl perbenzoate of more than 98%, the described demoulding
Agent is the calcium stearate powder of particle diameter 150-250 mesh, and described thickener is liquid oxidation magnesium, and described antioxidant is 2,6-bis-uncle
Butyl Pyrogentisinic Acid, described dispersant is BYK-W-996.
Preparation method is as follows:
(1) unsaturated polyester resin, low shrinkage additive, dispersant and pigment are stirred 2 minutes to stirring；
(2) in the compound that step (1) obtains, add curing agent and antioxidant, stir 3 minutes, then add filling
Material and releasing agent, continue stirring 20 minutes；
(3) in the compound that step (2) obtains, add thickener, stir 20 minutes, then add the fibrous material of 5%
After stirring 5 minutes, add residual fiber material and continue stirring 10 minutes, obtain described BMC polyester molding compound.
Embodiment 2
In the present embodiment, the raw material that mass percent is following BMC polyester molding compound is prepared:
Described fibrous material is with alkali-free short glass fiber and chopped polyacrylonitrile carbon fiber as raw material, through pre-oxygen
Change, carbonization and prepared glass fibre and the composite fibre of carbon fiber, described weatherability unsaturated polyester resin is epoxy resin
Modified unsaturated polyester resin, described weatherability low shrinkage additive is polystyrene, and described packing material is particle diameter 7-9 μm
Hydrated alumina, described weather-proof color is by 10% weather-proof color toner and 90% weatherability monomer-free unsaturated polyester (UP) tree
Fat mixing is milled the mill base made, described curing agent be purity be the peroxidized t-butyl perbenzoate of more than 98%, the described demoulding
Agent is the zinc stearate of particle diameter 150-250 mesh, and described thickener is calcium hydroxide, and described antioxidant is 2,6-di-t-butyl pair
Phenol, described dispersant is BYK-W-996.
Preparation method is as follows:
(1) unsaturated polyester resin, low shrinkage additive, dispersant and pigment are stirred 10 minutes to stirring；
(2) in the compound that step (1) obtains, add curing agent and antioxidant, stir 5 minutes, then add filling
Material and releasing agent, continue stirring 30 minutes；
(3) in the compound that step (2) obtains, add thickener, stir 10 minutes, then add the undulation degree of 10%
After material stirring 10 minutes, add residual fiber material and continue stirring 10 minutes, obtain described BMC polyester molding compound.
Embodiment 3
In the present embodiment, the raw material that mass percent is following BMC polyester molding compound is prepared:
Described fibrous material is with alkali-free short glass fiber and chopped polyacrylonitrile carbon fiber as raw material, through pre-oxygen
Change, carbonization and prepared glass fibre and the composite fibre of carbon fiber, described weatherability unsaturated polyester resin is epoxy resin
Modified unsaturated polyester resin, described weatherability low shrinkage additive is polystyrene, and described packing material is particle diameter 7-9 μm
Hydrated alumina, described weather-proof color is by 10% weather-proof color toner and 90% weatherability monomer-free unsaturated polyester (UP) tree
Fat mixing is milled the mill base made, described curing agent be purity be the peroxidized t-butyl perbenzoate of more than 98%, the described demoulding
Agent is the calcium stearate powder of particle diameter 150-250 mesh, and described thickener is magnesium hydroxide, and described antioxidant is double (3,5-bis-
Tert-butyl-hydroxy phenyl) thioether, described dispersant is BYK-9010.
Preparation method is as follows:
(1) unsaturated polyester resin, low shrinkage additive, dispersant and pigment are stirred 2 minutes to stirring；
(2) in the compound that step (1) obtains, add curing agent and antioxidant, stir 3 minutes, then add filling
Material and releasing agent, continue stirring 40 minutes；
(3) in the compound that step (2) obtains, add thickener, stir 15 minutes, then add the fibrous material of 8%
After stirring 10 minutes, add residual fiber material and continue stirring 15 minutes, obtain described BMC polyester molding compound.
Embodiment 4
In the present embodiment, the raw material that mass percent is following BMC polyester molding compound is prepared:
Described fibrous material is with alkali-free short glass fiber and chopped polyacrylonitrile carbon fiber as raw material, through pre-oxygen
Change, carbonization and prepared glass fibre and the composite fibre of carbon fiber, described weatherability unsaturated polyester resin is epoxy resin
Modified unsaturated polyester resin, described weatherability low shrinkage additive is polystyrene, and described packing material is particle diameter 7-9 μm
Hydrated alumina, described weather-proof color is by 10% weather-proof color toner and 90% weatherability monomer-free unsaturated polyester (UP) tree
Fat mixing is milled the mill base made, described curing agent be purity be the peroxidized t-butyl perbenzoate of more than 98%, the described demoulding
Agent is the calcium stearate powder of particle diameter 150-250 mesh, and described thickener is liquid oxidation magnesium, and described antioxidant is three (2,4-
Di-tert-butyl-phenyl) phosphite ester, described dispersant is BYK-W-996.
Preparation method is as follows:
(1) unsaturated polyester resin, low shrinkage additive, dispersant and pigment are stirred 5 minutes to stirring；
(2) in the compound that step (1) obtains, add curing agent and antioxidant, stir 5 minutes, then add filling
Material and releasing agent, continue stirring 25 minutes；
(3) in the compound that step (2) obtains, add thickener, stir 15 minutes, then add the fibrous material of 5%
After stirring 10 minutes, add residual fiber material and continue stirring 20 minutes, obtain described BMC polyester molding compound.
Embodiment 5
In the present embodiment, the raw material that mass percent is following BMC polyester molding compound is prepared:
Described fibrous material is with alkali-free short glass fiber and chopped polyacrylonitrile carbon fiber as raw material, through pre-oxygen
Change, carbonization and prepared glass fibre and the composite fibre of carbon fiber, described weatherability unsaturated polyester resin is epoxy resin
Modified unsaturated polyester resin, described weatherability low shrinkage additive is polystyrene, and described packing material is particle diameter 7-9 μm
Hydrated alumina, described weather-proof color is by 10% weather-proof color toner and 90% weatherability monomer-free unsaturated polyester (UP) tree
Fat mixing is milled the mill base made, described curing agent be purity be the peroxidized t-butyl perbenzoate of more than 98%, the described demoulding
Agent is the calcium stearate powder of particle diameter 150-250 mesh, and described thickener is liquid oxidation magnesium, and described antioxidant is 2,6-bis-uncle
Butyl Pyrogentisinic Acid, described dispersant is BYK-W-996.
Preparation method is as follows:
(1) unsaturated polyester resin, low shrinkage additive, dispersant and pigment are stirred 8 minutes to stirring；
(2) in the compound that step (1) obtains, add curing agent and antioxidant, stir 10 minutes, then add and fill out
Fill material and releasing agent, continue stirring 20 minutes；
(3) in the compound that step (2) obtains, add thickener, stir 15 minutes, then add the fibrous material of 8%
After stirring 8 minutes, add residual fiber material and continue stirring 20 minutes, obtain described BMC polyester molding compound.
Comparative example 1
This comparative example difference from Example 1 be only that do not use in the raw material preparing BMC polyester molding compound weather-proof
Property unsaturated polyester resin, the consumption of packing material is 70.79%, and remaining raw material and raw material dosage are same as in Example 1, system
Preparation Method and condition are the most same as in Example 1.
Comparative example 2
This comparative example difference from Example 1 be only that do not use in the raw material preparing BMC polyester molding compound weather-proof
Property unsaturated polyester resin, the consumption of weatherability low shrinkage additive is 28%, remaining raw material and raw material dosage and embodiment 1
Identical, preparation method and condition are the most same as in Example 1.
Comparative example 3
This comparative example difference from Example 1 is only that the raw material weatherability preparing BMC polyester molding compound is unsaturated
The consumption of polyester resin is 22%, and the consumption of packing material is 48.79%, remaining raw material and raw material dosage and embodiment 1 phase
With, preparation method and condition are the most same as in Example 1.
Comparative example 4
This comparative example difference from Example 1 is only that the raw material weatherability preparing BMC polyester molding compound is unsaturated
The consumption of polyester resin is 14%, and the consumption of packing material is 56.79%, remaining raw material and raw material dosage and embodiment 1 phase
With, preparation method and condition are the most same as in Example 1.
Comparative example 5
This comparative example difference from Example 1 is only that and does not use fiber in the raw material preparing BMC polyester molding compound
Material, the consumption of packing material is 66.79%, and remaining raw material and raw material dosage are same as in Example 1, preparation method and bar
Part is the most same as in Example 1.
Comparative example 6
This comparative example difference from Example 1 is only that in the raw material preparing BMC polyester molding compound use undulation degree
Material is glass fibre, and consumption is 14%, and remaining raw material and raw material dosage are same as in Example 1, and preparation method and condition are equal
Same as in Example 1.
Comparative example 7
This comparative example difference from Example 1 is only that in the raw material preparing BMC polyester molding compound the fiber used
The consumption of material is 13%, and the consumption of packing material is 53.79%, and remaining raw material and raw material dosage are same as in Example 1, system
Preparation Method and condition are the most same as in Example 1.
Comparative example 8
This comparative example difference from Example 1 is only that in the raw material preparing BMC polyester molding compound the fiber used
The consumption of material is 19%, and the consumption of packing material is 47.79%, and remaining raw material and raw material dosage are same as in Example 1, system
Preparation Method and condition are the most same as in Example 1.
Comparative example 9
This comparative example difference from Example 1 be only that do not use in the raw material preparing BMC polyester molding compound weather-proof
Property pigment, the consumption of packing material is 55.79%, and remaining raw material and raw material dosage are same as in Example 1, preparation method and
Condition is the most same as in Example 1.
Comparative example 10
This comparative example difference from Example 1 be only that do not use in the raw material preparing BMC polyester molding compound weather-proof
Property pigment, the consumption of weatherability unsaturated polyester resin is 21%, and remaining raw material and raw material dosage are same as in Example 1, system
Preparation Method and condition are the most same as in Example 1.
Comparative example 11
This comparative example difference from Example 1 be only that do not use in the raw material preparing BMC polyester molding compound weather-proof
Property pigment, the consumption of weatherability low shrinkage additive is 13%, and remaining raw material and raw material dosage are same as in Example 1, preparation
Method and condition are the most same as in Example 1.
Comparative example 12
This comparative example difference from Example 1 is only that in the raw material preparing BMC polyester molding compound the weather-proof of use
The consumption of property pigment is 4%, and the consumption of packing material is 51.79%, and remaining raw material and raw material dosage are same as in Example 1,
Preparation method and condition are the most same as in Example 1.
Comparative example 13
This comparative example difference from Example 1 is only that in the raw material preparing BMC polyester molding compound the weather-proof of use
The consumption of property pigment is 1%, and the consumption of packing material is 54.79%, and remaining raw material and raw material dosage are same as in Example 1,
Preparation method and condition are the most same as in Example 1.
BMC polyester molding compound embodiment 1-5 prepared (is added by ordinary resin, lower shrinkage with normal polyester moulding compound
Agent and pigment prepare) carry out anti-swelling, freedom from cracking and ageing resistace test, result is as shown in table 1.
Table 1
The BMC polyester molding compound preparing embodiment 1-5 and comparative example 1-13 carries out performance test, testing standard
And result is as shown in Table 2-4.
Table 2
Table 3
Table 4
By the test result of table 1 it can be seen that BMC polyester molding compound prepared by the present invention has the weatherability of excellence, often
Anti-swelling, freedom from cracking and the ageing resistace of rule polyester molding compound are only 15 years, and the BMC polyester molding compound of the present invention is anti-molten
Swollen, freedom from cracking and ageing resistace are 35 years.
By the test result of table 2-4 it can be seen that the BMC polyester molding compound of the present invention is by the phase interworking between each composition
Close, mutually coordinated so that the low ＜ of shaping shrinkage rate 0.15% of BMC polyester molding compound, water absorption rate ＜ 0.2%, heat distortion temperature
＞ 240 DEG C, bending strength >=200MPa, have good mechanical performance, insulation opposing ＞ 106Ω, proof voltage performance can reach
4-6KV/mm, arc resistance >=100Sec, the ＞ of resistance to leakage property 300CTI, anti-flammability can arrive V0 level, high comprehensive performance, and
When not using weatherability unsaturated polyester resin or weather-proof color in preparing raw material at it, its various aspects of performance the most under
Fall, and by comparative example 1, comparative example 2 with the contrast of embodiment 1 it can be seen that weatherability unsaturated polyester resin and weather-proof
Property low shrinkage additive promote BMC polyester molding compound various aspects of performance improvement on there is coordinative role, pass through comparative example
9, the contrast of comparative example 10 and comparative example 11 and embodiment 1 is it can be seen that weather-proof color, weatherability unsaturated polyester (UP) tree
Fat, weatherability low shrinkage additive have coordinative role in the improvement of various aspects of performance promoting BMC polyester molding compound, and
When each Ingredient Amount too much or very few time (such as comparative example 3-4, comparative example 11-12), its each side to BMC polyester molding compound
The improvement of performance is not very notable, additionally, fibrous material used by the present invention is the composite fibre of glass fibre and carbon fiber, is
With alkali-free short glass fiber and chopped polyacrylonitrile carbon fiber as raw material, preparing through pre-oxidation, carbonization, it is to raising
The mechanical performance of BMC polyester molding compound and promote that the performance of each side has and significantly affect, when being changed to common glass
During fiber (comparative example 6), the mechanical performance of BMC polyester molding compound is had a significant impact by it.
Applicant states, the present invention illustrates BMC polyester molding compound and the preparation side thereof of the present invention by above-described embodiment
Method and application, but the invention is not limited in above-described embodiment, i.e. do not mean that the present invention has to rely on above-described embodiment ability
Implement.Person of ordinary skill in the field it will be clearly understood that any improvement in the present invention, raw material each to product of the present invention etc.
Effect is replaced and the interpolation of auxiliary element, concrete way choice etc., within the scope of all falling within protection scope of the present invention and disclosure.
Claims (10)
1. a BMC polyester molding compound, it is characterised in that described BMC polyester molding compound is mainly by following former of mass percent
Material prepares:
BMC polyester molding compound the most according to claim 1, it is characterised in that described auxiliary agent include curing agent, releasing agent,
Thickener, antioxidant and dispersant, the mass percent that each composition of described auxiliary agent is shared in BMC polyester molding compound raw material
As follows:
BMC polyester molding compound the most according to claim 1 and 2, it is characterised in that described BMC polyester molding compound mainly by
The raw material that mass percent is following prepares:
4. according to the BMC polyester molding compound according to any one of claim 1-3, it is characterised in that described weatherability is unsaturated
Polyester resin is the unsaturated polyester resin of epoxy resin modification；
Preferably, the viscosity of described weatherability unsaturated polyester resin is 1400-1450mPa s；
Preferably, described weatherability low shrinkage additive is polystyrene, polymethyl methacrylate, polyvinyl acetate or poly-
Any one or the combination of at least two, preferably polystyrene in PETP.
5. according to the BMC polyester molding compound according to any one of claim 1-4, it is characterised in that described packing material is grain
The hydrated alumina of footpath 7-9 μm and/or calcium carbonate powder；
Preferably, described hydrated alumina is hibbsite and/or monohydrate alumina.
6. according to the BMC polyester molding compound according to any one of claim 1-5, it is characterised in that described fibrous material is glass
Glass fiber and the composite fibre of carbon fiber；
Preferably, described fibrous material is with alkali-free short glass fiber and chopped polyacrylonitrile carbon fiber as raw material, through pre-
Oxidation, carbonization and prepare；
Preferably, described weather-proof color is by the weather-proof color toner of 5-15% and 85-95% weatherability monomer-free unsaturated polyester
Ester mixed with resin is milled the mill base made.
7. according to the BMC polyester molding compound according to any one of claim 2-6, it is characterised in that described curing agent is purity
It it is the peroxidized t-butyl perbenzoate of more than 98%；
Preferably, described releasing agent is calcium stearate and/or the zinc stearate of particle diameter 150-250 mesh；
Preferably, described thickener is liquid oxidation magnesium, calcium hydroxide or magnesium hydroxide；
Preferably, described antioxidant is 2,6-di-t-butyl Pyrogentisinic Acid, double (3,5-di-tert-butyl-hydroxy phenyl) thioether or
Any one or the combination of at least two in three (2,4-di-tert-butyl-phenyl) phosphite ester, preferably 2,6-di-t-butyl is to benzene
Phenol；
Preferably, described dispersant is BYK-W-996 and/or BYK-9010.
8. according to the preparation method of the BMC polyester molding compound according to any one of claim 1-7, it is characterised in that described system
Preparation Method comprises the following steps:
(1) unsaturated polyester resin, low shrinkage additive, dispersant and pigment are stirred；
(2) in the compound that step (1) obtains, curing agent and antioxidant are added, stirring, then add packing material and take off
Mould agent, continues stirring；
(3) in the compound that step (2) obtains, add thickener, stirring, then add the fibrous material stirring 5-of 5-10%
After 10 minutes, add residual fiber material and continue stirring, obtain described BMC polyester molding compound.
Preparation method the most according to claim 8, it is characterised in that the time of step (1) described stirring is 2-10 minute；
Preferably, the time of step (2) described stirring is 3-10 minute；
Preferably, step (2) the described time continuing stirring is 20-40 minute；
Preferably, the time of step (3) described stirring is 10-20 minute；
Preferably, step (3) the described time continuing stirring is 10-20 minute；
Preferably, the preparation of described BMC polyester molding compound is carried out in kneading machine.
10. according to the application in preparing weather resistant materials of the BMC polyester molding compound according to any one of claim 1-8.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106189159A (en) * | 2016-08-16 | 2016-12-07 | 芜湖美智空调设备有限公司 | Air conditioner air deflector and for manufacturing bulk molded composites and the preparation method of air conditioner air deflector |
| CN106280232A (en) * | 2016-08-12 | 2017-01-04 | 绍兴金创意塑化电器有限公司 | A kind of fibre reinforced plastics motor casing possessing high thermal conductivity coefficient |
| CN106317762A (en) * | 2016-08-12 | 2017-01-11 | 绍兴金创意塑化电器有限公司 | Fiber-reinforced plastic motor case and forming process thereof |
| CN107240575A (en) * | 2017-06-30 | 2017-10-10 | 信利光电股份有限公司 | A kind of SMT support plates |
| CN108766622A (en) * | 2018-05-29 | 2018-11-06 | 江苏兆鋆新材料股份有限公司 | A kind of conduction BMC tubular molding compound and preparation method thereof |
| CN111621130A (en) * | 2020-06-08 | 2020-09-04 | 常熟市华邦汽车复合材料有限公司 | Low-shrinkage high-gloss unsaturated polyester resin glass fiber reinforced molding compound and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106280232A (en) * | 2016-08-12 | 2017-01-04 | 绍兴金创意塑化电器有限公司 | A kind of fibre reinforced plastics motor casing possessing high thermal conductivity coefficient |
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| CN106317762B (en) * | 2016-08-12 | 2019-10-18 | 绍兴金创意塑化电器有限公司 | A kind of fibre-reinforced plastic motor shell and its moulding process |
| CN106280232B (en) * | 2016-08-12 | 2020-01-03 | 绍兴金创意塑化电器有限公司 | Fiber reinforced plastic motor casing with high heat conductivity coefficient |
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| CN107240575A (en) * | 2017-06-30 | 2017-10-10 | 信利光电股份有限公司 | A kind of SMT support plates |
| CN108766622A (en) * | 2018-05-29 | 2018-11-06 | 江苏兆鋆新材料股份有限公司 | A kind of conduction BMC tubular molding compound and preparation method thereof |
| CN111621130A (en) * | 2020-06-08 | 2020-09-04 | 常熟市华邦汽车复合材料有限公司 | Low-shrinkage high-gloss unsaturated polyester resin glass fiber reinforced molding compound and application thereof |
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