CN106167609A - A kind of high flow flame-proof sheet molding compound and preparation method thereof - Google Patents
A kind of high flow flame-proof sheet molding compound and preparation method thereof Download PDFInfo
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- CN106167609A CN106167609A CN201610635591.9A CN201610635591A CN106167609A CN 106167609 A CN106167609 A CN 106167609A CN 201610635591 A CN201610635591 A CN 201610635591A CN 106167609 A CN106167609 A CN 106167609A
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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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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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
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/004—Additives being defined by their length
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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
- 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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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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
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Abstract
The present invention relates to a kind of high flow flame-proof sheet molding compound and preparation method thereof, it belongs to chemical raw material field.The formula of moulding compound of the present invention comprises the material of following mass parts: unsaturated polyester resin 15 30 parts, glass fibre 10 40 parts, shrinking agent 5 15 parts, fire-retardant filler 30 60 parts, initiator 0.2 1 parts, polymerization inhibitor 0.02 0.1 parts, thickening agent 0.2 1 parts, styrene 2 10 parts, inner pattern releasing agent applicable 15 parts and viscosity reduction auxiliary agent 0.1 0.5 parts.Present invention employs high-impact shrinking agent, make up and add the mechanical property loss that fire-retardant filler brings, and utilize different-grain diameter fire-retardant filler to play collaborative filling effect, to promote flame retardant effect, and reduce resin paste viscosity by viscosity reduction auxiliary agent, form high flow flame-proof sheet molding compound, and the preparation method of above-mentioned high flow flame-proof sheet molding compound material is provided.
Description
Technical field
The present invention relates to a kind of moulding compound and preparation method thereof, especially relate to a kind of high flow flame-proof sheet molding compound
And preparation method thereof, it belongs to chemical raw material field.
Background technology
Sheet molding compound be added by unsaturated polyester resin as auxiliary in a certain amount of thickening agent, filler, firming agent and accelerator etc.
Help material, SMC press through be made after being pressed into sheet material, be widely used in building, track traffic and bathroom market.
Along with environmental regulation, security legislation increasingly strict, the most each developed country has issued a series of new in succession
Flame-retarded technology standard and regulation, such as European Union's newest standards EN45545, U.S. ASTM E84-06, to polymeric material and goods
Anti-flammability propose unprecedented requirement.Make a general survey of these Standard andRegulations, substantially embody high fire-retardance, low cigarette, nontoxic spy
Point.
And for the SMC pressing of building field, such as building template etc., universal size is relatively big, depth reaches more than 1m, because of
This mobility to sheet molding compound in mold process has the highest requirement, and the SMC resin paste flowing that otherwise viscosity is big is the best
Large scale molding glass can be caused to leak outside, lack, cracking etc., mechanical properties decrease.
Common fire-retardant sheet molding compound, because have employed substantial amounts of inorganic filler and fire retardant, improves the viscous of resin paste
Degree, reduces the mobility of sheet molding compound, can only prepare widget, it is impossible to be widely used in large-sized building field.
Publication date is on 02 27th, 2013, in the Chinese patent of Publication No. 102942761A, discloses a kind of title
Patent of invention for " a kind of Low-smoke halogen-free environment-friendlyflame-retardant flame-retardant type sheet molding compound and preparation method thereof ".The flame-resistant sheet that this patent provides
Shape moulding compound needs organosilicon synergist, antismoke agent, linear phenolic resin etc..Although this patent is compared to traditional fire retardant,
Improve composite fire resistance, reduce burning smoke density, but be provided without the shrinking agent system of high-impact, not mentioned its
Mobility.
Publication date is on 08 26th, 2009, in the Chinese patent of Publication No. 101514254, discloses a kind of entitled
The patent of invention of " a kind of sheet molding compound with high flame resistance, low smoke and non-toxic and preparation method thereof ".The high flame resistance, low smoke sheet that this patent provides
Shape moulding compound, emphasizes smokeless, for traffic interior trim, is provided without the shrinking agent system of high-impact, be not directed to resin paste viscosity and
Mobility.
Summary of the invention
It is an object of the invention to overcome above-mentioned deficiency present in prior art, and the fire-retardant sheet molding compound provided,
Utilize different-grain diameter fire-retardant filler to play collaborative filling effect, decrease addition promoting flame retardant effect, help also by viscosity reduction
Agent reduces resin paste viscosity, improves mobility；And have employed high-impact shrinking agent, make up and add the power that fire-retardant filler brings
Learn performance loss, form high flow flame-proof sheet molding compound, and provide above-mentioned high flow flame-proof sheet molding compound material
Preparation method.
The present invention solves the problems referred to above and be the technical scheme is that this high flow flame-proof sheet molding compound, its feature
It is: the formula of described moulding compound comprises the material of following mass parts: unsaturated polyester resin 15-30 part, glass fibre 10-40
Part, shrinking agent 5-15 part, fire-retardant filler 30-60 part, initiator 0.2-1 part, polymerization inhibitor 0.02-0.1 part, thickening agent 0.2-1
Part, styrene 2-10 part, inner pattern releasing agent applicable 1-5 part, viscosity reduction auxiliary agent 0.1-0.5 part.
As preferably, unsaturated polyester resin of the present invention is adjacent benzene resin, isophthalic resin or the one of vinylite
Plant or the mixing of any two kinds.
As preferably, glass fibre of the present invention is chopped alkali-free glass fibre yarn, a length of 12-30mm.
As preferably, shrinking agent of the present invention is high impact polystyrene；High impact polystyrene be by
The shock proof polystyrene products of one produced with the way adding poly-butyl rubber granule in polystyrene, this polyphenyl second
Alkene product can be added micron order rubber grain and by the way of scion grafting, polystyrene and rubber grain be linked together；One side
The phenyl ring of face ordinary polystyrene is randomly being connected to main chain both sides, and high impact polystyrene uses and led to by styrene
Cross polymerization catalyzed by metallocene and obtain a kind of syndiotactic polystyrene, the main chain that the phenyl ring on this syndiotactic polystyrene alternately connects
Both sides, increase its shock resistance.On the other hand polystyrene and polybutadiene are incompatible, therefore styrene and butadiene
Segment is assembled respectively, produces and is separated, and these polybutadiene phase regions can absorb impact energy, thus improves rushing of polystyrene
Hit intensity.
As preferably, fire-retardant filler of the present invention uses two kinds of particle diameter alumags of 4-10 μm, mixing ratio
Example is 1:1-5:1.
As preferably, initiator of the present invention uses peroxidized t-butyl perbenzoate, tert-butyl hydroperoxide-2-ethyl
Alkyl caproate or 1, the one in 1-cyclohexane di-tert-butyl peroxide.
As preferably, polymerization inhibitor of the present invention is 1,4-benzoquinone.
As preferably, thickening agent of the present invention is one or both mixture of magnesium oxide or magnesium hydroxide.
As preferably, inner pattern releasing agent applicable of the present invention is zinc stearate or calcium stearate；Viscosity reduction auxiliary agent be BYK996 or
BYK972。
The present invention also provides for the preparation method of a kind of high flow flame-proof sheet molding compound, it is characterised in that: include following
Step:
A, by unsaturated polyester resin, shrinking agent, fire-retardant filler, initiator, polymerization inhibitor, inner pattern releasing agent applicable, viscosity reduction auxiliary agent and benzene
Ethylene etc. weigh with certain proportion, carry out being sufficiently mixed obtaining resin paste；
B, thickening agent is mixed with styrene, obtain thickening agent and stick with paste；
C, resin paste and thickening agent stuck with paste mixed by the on-line mixing system of SMC machine group simultaneously, then with short glass fiber warp
Cross dipping and compacting process obtains SMC sheet；
D, SMC sheet is placed at a certain temperature ripening, after penetration hardness reaches certain limit, heat pressurized conditions lower mold
Molded, obtain high flow flame-proof sheet molding compound.
The present invention compared with prior art, has the following advantages and effect: 1, having high fire-retardance, low viscosity has height simultaneously
Mobility, is suitable for preparing the large scale thermosetting pressing of building field；2, use two kinds of different-grain diameter fire-retardant fillers to compound to make
With, collaborative filling, farthest play its flame retardant effect, and improve the closely knit of material and quality；3, polybutene rubber is used
Glued joint branch MPS, produce high-impact shrinking agent, make up the mechanical property loss using fire-retardant filler to bring；4, adopt
Use viscosity reduction auxiliary agent, reduce resin paste viscosity, improve the mobility of sheet molding compound, be conducive to molding large scale product.
Detailed description of the invention
Below by embodiment, the present invention is described in further detail, following example be explanation of the invention and
The invention is not limited in following example.
The formula of the present embodiment high flow flame-proof sheet molding compound comprises the material of following mass parts: unsaturated polyester (UP) tree
Fat 15-30 part, glass fibre 10-40 part, shrinking agent 5-15 part, fire-retardant filler 30-60 part, initiator 0.2-1 part, polymerization inhibitor
0.02-0.1 part, thickening agent 0.2-1 part, styrene 2-10 part, inner pattern releasing agent applicable 1-5 part, viscosity reduction auxiliary agent 0.1-0.5 part.
Unsaturated polyester resin in the present embodiment is adjacent benzene resin, isophthalic resin or the one of vinylite or any
The mixing of two kinds.
Glass fibre in the present embodiment is chopped alkali-free glass fibre yarn, a length of 12-30mm.
Shrinking agent in the present embodiment is high impact polystyrene；High impact polystyrene is by with polyphenyl second
Alkene adds the shock proof polystyrene products of one that the way of poly-butyl rubber granule produces, this polystyrene products meeting
Add micron order rubber grain and by the way of scion grafting, polystyrene and rubber grain linked together.
Fire-retardant filler in the present embodiment uses two kinds of particle diameter alumags of 4-10 μm, and mixed proportion is 1:1-
5:1。
Initiator in the present embodiment use peroxidized t-butyl perbenzoate, tert-butyl hydroperoxide-2-ethylhexoate or
One in 1,1-cyclohexane di-tert-butyl peroxide.
Polymerization inhibitor in the present embodiment is 1,4-benzoquinone；Thickening agent is one or both mixing of magnesium oxide or magnesium hydroxide
Thing；Inner pattern releasing agent applicable is zinc stearate or calcium stearate；Viscosity reduction auxiliary agent is BYK996 or BYK972.
The present embodiment additionally provides the preparation method of high flow flame-proof sheet molding compound, comprises the following steps:
A, by unsaturated polyester resin, shrinking agent, fire-retardant filler, initiator, polymerization inhibitor, inner pattern releasing agent applicable, viscosity reduction auxiliary agent and benzene
Ethylene etc. weigh with certain proportion, carry out being sufficiently mixed obtaining resin paste；
B, thickening agent is mixed with styrene, obtain thickening agent and stick with paste；
C, resin paste and thickening agent stuck with paste mixed by the on-line mixing system of SMC machine group simultaneously, then with short glass fiber warp
Cross dipping and compacting process obtains SMC sheet；
D, SMC sheet is placed at a certain temperature ripening, after penetration hardness reaches certain limit, heat pressurized conditions lower mold
Molded, obtain high flow flame-proof sheet molding compound.
Embodiment 1:
Preparation vinylite 36.8kg, high impact polystyrene 9.2kg, chopped alkali-free glass fibre yarn a size of 25.4mm,
26kg, TBPB are 0.56kg, PBQ solution 0.4kg, styrene 2.3kg, zinc stearate 2kg, the 8 μ aluminium hydroxide 42kg of 6.5%,
10 μ aluminium hydroxide 25kg, 40% magnesium oxide sticks with paste 2.1kg, BYK996 0.3kg.
The above material etc. in addition to thickening agent is stuck with paste is weighed with certain proportion, carries out being sufficiently mixed and obtain resin paste, resin
Stick with paste viscosity and reach 88p；Resin paste and thickening agent are stuck with paste and are mixed by the on-line mixing system of SMC machine group simultaneously, then with chopped glass
Glass fiber obtains SMC sheet through processes such as dipping, compactings；SMC sheet is placed at 40 DEG C ripening, treats that penetration hardness reaches
After 304, compression molding under the conditions of 140-150 DEG C, obtain high flow flame-proof sheet molding compound, this sheet molding compound is through fire-retardant
Test is fire-retardant for vo level.
Embodiment 2
Prepare isophthalic resin 20kg, vinylite 30kg, high impact polystyrene 9.2kg, chopped alkali-free glass fibre yarn
A size of 25.4mm, 36kg, TBPB0.66kg, 6.5%PBQ solution 0.5kg, styrene 2.6kg, zinc stearate 2kg, 6 μ hydrogen-oxygens
Change aluminum 20kg, 8 μ aluminium hydroxide 58kg, 40% magnesium hydroxide and stick with paste 2.5kg, BYK996 0.5kg.
The above material etc. in addition to thickening agent is stuck with paste is weighed with certain proportion, carries out being sufficiently mixed and obtain resin paste, resin
Stick with paste viscosity and reach 69p；Resin paste and thickening agent are stuck with paste and are mixed by the on-line mixing system of SMC machine group simultaneously, then with chopped glass
Glass fiber obtains SMC sheet through processes such as dipping, compactings.SMC sheet is placed at 40 DEG C ripening, treats that penetration hardness reaches
After 304, compression molding under the conditions of 140-150 DEG C, obtain high flow flame-proof sheet molding compound, this sheet molding compound is through fire-retardant
Test is fire-retardant for vo level.
High impact polystyrene in the present embodiment is the way by adding poly-butyl rubber granule in polystyrene
The shock proof polystyrene products of one produced, this polystyrene products can add micron order rubber grain and pass through scion grafting
Way polystyrene and rubber grain are linked together, when being impacted, the point stresses of cracks can spread can be by relatively
Soft rubber grain discharges, and therefore the extension of crackle is hindered, and impact resistance is improved.
High impact polystyrene in the present embodiment is a kind of brittle plastic, and on the one hand the phenyl ring of ordinary polystyrene is in nothing
It is connected to main chain both sides to rule, and high impact polystyrene uses and obtained one by styrene by polymerization catalyzed by metallocene
Syndiotactic polystyrene, the both sides of the main chain that the phenyl ring on this syndiotactic polystyrene alternately connects, increase its shock resistance.Separately
On the one hand polystyrene and polybutadiene are incompatible, and therefore styrene and butadiene segment are assembled respectively, produce and are separated,
These polybutadiene phase regions can absorb impact energy, thus improves the impact strength of polystyrene.
By above-mentioned elaboration, those skilled in the art can implement.
Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, its be named title etc. can be different,
Above content described in this specification is only to present configuration example explanation.All according to patent structure of the present invention
The equivalence that structure, feature and principle described in think of is done changes or simple change, is all included in the protection model of patent of the present invention
In enclosing.Described specific embodiment can be made various amendment or benefit by those skilled in the art
Fill or use similar mode to substitute, without departing from the structure of the present invention or surmount model defined in the claims
Enclose, protection scope of the present invention all should be belonged to.
Claims (10)
1. a high flow flame-proof sheet molding compound, it is characterised in that: the formula of described moulding compound comprises following mass parts
Material: unsaturated polyester resin 15-30 part, glass fibre 10-40 part, shrinking agent 5-15 part, fire-retardant filler 30-60 part, draw
Sending out agent 0.2-1 part, polymerization inhibitor 0.02-0.1 part, thickening agent 0.2-1 part, styrene 2-10 part, inner pattern releasing agent applicable 1-5 part, viscosity reduction helps
Agent 0.1-0.5 part.
High flow flame-proof sheet molding compound the most according to claim 1, it is characterised in that: described unsaturated polyester resin
For adjacent benzene resin, isophthalic resin or a kind of or mixing of any two kinds of vinylite.
High flow flame-proof sheet molding compound the most according to claim 1, it is characterised in that: described glass fibre is chopped
Alkali-free glass fibre yarn, a length of 12-30mm.
High flow flame-proof sheet molding compound the most according to claim 1, it is characterised in that: described shrinking agent is high anti-
Rush polystyrene.
High flow flame-proof sheet molding compound the most according to claim 1, it is characterised in that: described fire-retardant filler uses 4-
Two kinds of particle diameter alumags of 10 μm, mixed proportion is 1:1-5:1.
High flow flame-proof sheet molding compound the most according to claim 1, it is characterised in that: described initiator uses peroxide
Change t-butyl perbenzoate, tert-butyl hydroperoxide-2-ethylhexoate or 1, the one in 1-cyclohexane di-tert-butyl peroxide.
High flow flame-proof sheet molding compound the most according to claim 1, it is characterised in that: described polymerization inhibitor is to benzene
Quinone.
High flow flame-proof sheet molding compound the most according to claim 1, it is characterised in that: described thickening agent is magnesium oxide
Or the mixture of one or both of magnesium hydroxide.
High flow flame-proof sheet molding compound the most according to claim 1, it is characterised in that: described inner pattern releasing agent applicable is stearic
Acid zinc or calcium stearate；Viscosity reduction auxiliary agent is BYK996 or BYK972.
10. a preparation method for high flow flame-proof sheet molding compound, uses the high flow flame-proof described in claim 1-9
Sheet molding compound, it is characterised in that: comprise the following steps:
A, by unsaturated polyester resin, shrinking agent, fire-retardant filler, initiator, polymerization inhibitor, inner pattern releasing agent applicable, viscosity reduction auxiliary agent and benzene
Ethylene etc. weigh with certain proportion, carry out being sufficiently mixed obtaining resin paste；
B, thickening agent is mixed with styrene, obtain thickening agent and stick with paste；
C, resin paste and thickening agent stuck with paste mixed by the on-line mixing system of SMC machine group simultaneously, then with short glass fiber warp
Cross dipping and compacting process obtains SMC sheet；
D, SMC sheet is placed at a certain temperature ripening, after penetration hardness reaches certain limit, heat pressurized conditions lower mold
Molded, obtain high flow flame-proof sheet molding compound.
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| CN106700462A (en) * | 2017-01-19 | 2017-05-24 | 厦门弘诚复合材料有限公司 | Prepreg for preparing special transformer polyester insulating board, special transformer polyester insulating board and preparation method |
| CN106753149A (en) * | 2017-01-19 | 2017-05-31 | 厦门弘诚复合材料有限公司 | A kind of glue, prepreg, polyester insulated plate and preparation method |
| CN107053807A (en) * | 2016-12-23 | 2017-08-18 | 江苏玖尚新材料有限公司 | A kind of ultraviolet light cured sheet for pipeline external thermal insulation cold insulation |
| CN108165041A (en) * | 2017-12-19 | 2018-06-15 | 江苏润达利复合材料有限公司 | Valve mechanism cover SMC sheet and preparation method thereof |
| CN109233234A (en) * | 2018-09-12 | 2019-01-18 | 张家港市中联特种塑料厂 | The granular unsaturated polyester UP moulding compound of the high electric strength of injection moldable |
| CN109651787A (en) * | 2018-12-29 | 2019-04-19 | 浙江律通复合材料有限公司 | The SMC material of high fire-retardance, low-density |
| CN109880332A (en) * | 2019-02-14 | 2019-06-14 | 常州天马集团有限公司（原建材二五三厂） | A kind of high fire-retardance, high-intensitive environmental type sheet molding compound and preparation method thereof |
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| CN106753149A (en) * | 2017-01-19 | 2017-05-31 | 厦门弘诚复合材料有限公司 | A kind of glue, prepreg, polyester insulated plate and preparation method |
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Application publication date: 20161130 |