CN106009576A - Low-density, high-flame retardation and high-weatherability bulk molding compound and application thereof - Google Patents
Low-density, high-flame retardation and high-weatherability bulk molding compound and application thereof Download PDFInfo
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- CN106009576A CN106009576A CN201610367226.4A CN201610367226A CN106009576A CN 106009576 A CN106009576 A CN 106009576A CN 201610367226 A CN201610367226 A CN 201610367226A CN 106009576 A CN106009576 A CN 106009576A
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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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a low-density, high-flame retardation and high-weatherability bulk molding compound and an application thereof. Preparation raw materials of the bulk molding compound comprise high pressure-resistant hollow ceramic beads used as a filling material, unsaturated resin, a low shrinkage agent, a curing agent, a mold lubricant, an antioxidant, a color paste, an inorganic flame retardation filler and glass fibers according to an appropriate ratio, so the density of the above product is reduced, the insulating property, the fireproof property, the rigidity and the hardness of the compound are improved, and the compound has high strength, low density, high weatherability, can be widely applied to the field of integrated ceiling gusset plates and other fields, solves very large technical problems, and has economic and social values.
Description
Technical field
The present invention relates to polymeric material field, particularly relate to a kind of low-density, high fire-retardance, high-weatherability bulk
Moulding compound and application thereof.
Background technology
BMC (Bulk molding compounds, be called for short BMC) be by unsaturated polyester resin,
The thermosetting that the components such as function interpolation auxiliary agent, firming agent, mineral filler and short glass fiber mix is combined
Material.Its briquetting pressure and forming temperature are the most relatively low, can reduce the cost of investment to equipment and mold, are suitable for adding
The large-scale component that work configuration is complicated.Because it has excellent electric property, mechanical performance, thermostability, chemically-resistant
Corrosivity can meet the requirement to performance of the various product, and range of application is the most extensive.Growth main for BMC
Point is in auto manufacturing, but the density of the BMC of routine is about (1.8-2.0) × 103Kg/m3.Along with
The growing tension of the energy, materials application require to improve therewith, to the lightweight of BMC, safety in utilization, goods
Stability is had higher requirement, and therefore low-density, high fire-retardance, ageing-resistant BMC become studied now
Big focus.
Hollow ceramic microspheres is as a kind of novel inorganic filler, and its physical property and chemical property are the most excellent
Different, its addition is possible not only to reduce the density of goods, it is also possible to improve the insulating properties of material, fire resistance, just
The performances such as degree, hardness, also have the biggest advantage on processing technology.Due to the spherical surface of his uniqueness, add
Man-hour sphere roller functions, make the mobility dispersibility of moulding compound be greatly improved.Grow up at present is free
Heart ceramic fine bead and hollow glass micropearl.Hollow ceramic microspheres as a kind of novel inorganic non-metallic filler, though
Widely apply in a lot of fields, but owing at present hollow glass micropearl main body characteristic being explored seldom, right
The control synthetic technology of its composition is immature, it is impossible to scale of input produces, and holds in view of hollow glass micropearl
The features such as the pressure limit being subject to is little, brittle, are not suitable for mould pressing process.
The alternate material being resistant to higher pressure how is selected to prepare the BMC of low-density, high intensity as packing material
Material value obtains research and inquirement.
Summary of the invention
Goal of the invention: in order to overcome the filler used present in prior art to have to bear pressure limit little,
The problem of mould pressing process brittle, inapplicable, the present invention proposes the high voltage bearing hollow ceramic microspheres of a kind of employing and makees
For filler, improve BMC insulating properties, rigidity, hardness the low-density of extrudate density that reduces, high fire-retardance,
High-weatherability BMC and application thereof.
Technical scheme: in order to solve above-mentioned technical problem, the technical solution adopted in the present invention is: a kind of low close
Degree, high fire-retardance, high-weatherability BMC, be prepared from by the raw material of following parts by weight, particularly as follows:
Unsaturated-resin 50-70 part, shrinking agent 30-50 part, firming agent 1-2 part, releasing agent 3-6 part, sky
Heart ceramic fine bead 30-60 part, antioxidant 5-10 part, mill base 4-10 part, inorganic fire-retarded mineral filler 200-350
Part, glass fibre 50-150 part.
Be more highly preferred to, described unsaturated-resin be isophthalic resin, adjacent benzene resin, to benzene resin and vinyl
One in resin.
Described shrinking agent is Novel PVA c/St copolymer, has gathered polyvinyl acetate (PVAc) shrinkage factor
Good and that polystyrene (PS) tinctorial property is excellent feature, can form less microgranule in dispersive process,
Make the most evenly, beneficially uniformly the manifesting of color.Can effectively realize zero contraction and reach A
The requirement on level surface.
Further, described releasing agent is novel liquid release agent.
Described hollow ceramic microspheres obtains through following process technique: by weight the ratio for 1:1, silane is even
Connection agent h-151 is made into aqueous solution, instills in the hollow ceramic microspheres after drying, stirring after stirring
40-60min, makes inorganic agent fully be coated with hollow ceramic microspheres, and the hollow ceramic microspheres after then processing is put into
In baking oven, oven temperature is maintained at 110 DEG C, and constant temperature is after 3 hours, and it is standby that thermostatic drying chamber is put in taking-up,
The hollow ceramic microspheres mean diameter being prepared from is less than 40 μm, and comprcssive strength is more than 40MPa, and density is less than
0.35g/cm3。
Described antioxidant is that phosphorous acid esters and salicylic acid esters, benzophenone class, benzotriazole UV optical absorbing agent are multiple
Fit system, two kinds of antioxidant are soluble in the system of whole formula, and UV optical absorbing agent can absorb 240-340nm ultraviolet light,
It is the efficient UV optical absorbing agent of a kind of performance brilliance, unsaturated polyester resin system is had the biggest protective effect, with
Shi Yanhuan BMC yellowing and retardance loss of physical properties.
Described inorganic fire-retarded mineral material is high fire-retardance level aluminium hydroxide, and the type aluminium hydroxide flame-retardant performance well relatively has
The machine halogen flame advantage such as have good flame retardation effect, environmental protection, pyrolytic thing nontoxic.
Described glass fibre is the alkali-free glass fibre of 3-25mm, has the strongest combination with unsaturated polyester resin
Property, it is greatly improved every mechanical performance of BMC.
The invention allows for above-mentioned a kind of low-density, high fire-retardance, the application of high-weatherability BMC, tool
Body is used for integrated suspended ceiling pinch plate.
Beneficial effect: the present invention provide a kind of low-density, high fire-retardance, high-weatherability BMC and should
With, the hollow ceramic microspheres of employing ability higher pressure is as packing material, and is aided with properly mixed unsaturation
Resin, shrinking agent, firming agent, releasing agent, antioxidant, mill base, inorganic fire-retarded filler and glass fibers
Dimension altogether for BMC prepare raw material, not only reduce the density of goods, also improve material insulating properties,
The performances such as fire resistance, rigidity, hardness, finished product has higher intensity and relatively low density, and has high
Weatherability, is widely used in integrated suspended ceiling pinch plate and other field, solves the biggest technical barrier, economic valency
Value and social value also deposit.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail:
Embodiment 1:
A kind of low-density, high fire-retardance, high-weatherability BMC, by the raw material preparation of following parts by weight
Become, particularly as follows: isophthalic resin 65 parts, shrinking agent PVAc/St copolymer 35 parts, firming agent TBPB 1.0
Part, firming agent TBPO 0.5 part, liquid release agent W9020 5 parts, hollow ceramic microspheres 40 parts, antioxidation
Agent 626 3 parts, antioxidant UV optical absorbing agent UV-531 3 parts, mill base 5 parts, inorganic fire-retarded mineral filler hydrogen
Aluminium oxide 250 parts, the glass fibre 100 parts of 12mm.
Embodiment 2:
A kind of low-density, high fire-retardance, high-weatherability BMC, by the raw material preparation of following parts by weight
Become, particularly as follows: isophthalic resin 52 parts, shrinking agent PVAc/St copolymer 48 parts, firming agent TBPB 1.0
Part, firming agent TBPO 0.5 part, liquid release agent W9020 5 parts, hollow ceramic microspheres 30 parts, antioxidation
Agent 626 3 parts, antioxidant UV optical absorbing agent UV-531 3 parts, mill base 5 parts, inorganic fire-retarded mineral filler hydrogen
Aluminium oxide 250 parts, the glass fibre 100 parts of 12mm.
Embodiment 3:
A kind of low-density, high fire-retardance, high-weatherability BMC, by the raw material preparation of following parts by weight
Become, particularly as follows: isophthalic resin 70 parts, shrinking agent PVAc/St copolymer 30 parts, firming agent TBPB 1.0
Part, firming agent TBPO 0.5 part, liquid release agent W9020 5 parts, hollow ceramic microspheres 55 parts, antioxidation
Agent 626 3 parts, antioxidant UV optical absorbing agent UV-531 3 parts, mill base 5 parts, inorganic fire-retarded mineral filler hydrogen
Aluminium oxide 250 parts, the glass fibre 100 parts of 12mm.
Using following method to be prepared as BMC the formula of above-described embodiment 1, step is specific as follows:
(1) surface of hollow ceramic microspheres processes: by weight the ratio for 1:1 by silane coupler h-151
It is made into aqueous solution, instills in the hollow ceramic microspheres after drying after stirring, stir 40-60min, make place
Reason agent is fully coated with hollow ceramic microspheres, and the hollow ceramic microspheres after then processing is put in baking oven, baking oven temperature
Degree is maintained at 110 DEG C, and constant temperature is after 3 hours, and it is standby that thermostatic drying chamber is put in taking-up；
(2) preparation of resin paste: isophthalic resin and shrinking agent PVAc/St copolymer are poured into stainless respectively
In steel container, open high speed dispersor setting speed to 1000r/min, stir 2min；Add firming agent
TBPB1.0 part, firming agent TBPO0.5 part, liquid release agent W9020, antioxidant 626, UV-531 with
And mill base, setting speed to 1200r/min, stir 10min；
(3) mediate: after adding inorganic fire-retarded mineral filler aluminium hydroxide in kneader, close kneading cover,
Kneader rotating speed is beaten to quickly, pours, after mediating 5min, the resin paste that step (2) mixes into, is quickly turning
Mediating 8min in speed, be subsequently adding the glass fibre of 12mm, kneader rotating speed is beaten at a slow speed, mediates 9min；
Then carry out mediating 2min by the hollow ceramic microspheres that the resin paste and step (1) that are mixed with glass fibre are handled well；
(4) extrusion: the dough of dipping fiber step (3) obtained is extruded into small column with extruder further
Billot or pellet block, and pack with the polyethylene film being easily peeled, deposit in the environment of being dried in 25 DEG C
24h i.e. obtains BMC premix material；
(5) compression molding: using 300T press, mould is 250mm × 200mm × 4mm band temperature regulating device
Flat plate mold, mould is warming up to 140 DEG C of chargings, and matched moulds pressurization 8MPa, closure pressing speed is 30mm/min；
After pressurize 90s, sheet forming is taken out in die sinking, and natural cooling room temperature obtains required BMC.
After tested, pressed sheet density is 1.35g/cm3, compacting standard strip carries out quantitative measurement:
Hot strength 40.18MPa, impact strength 36.66KJ/.
Comparative example:
The preparation carried out by the following formula without hollow ceramic microspheres: isophthalic resin 65 parts, shrinking agent
PVAc/St copolymer 35 parts, firming agent TBPB 1.0 parts, firming agent TBPO 0.5 part, liquid release agent
W9020 5 parts, antioxidant 626 3 parts, antioxidant UV optical absorbing agent UV-531 3 parts, mill base 5 parts,
Inorganic fire-retarded mineral filler aluminium hydroxide 290 parts, the glass fibre 100 parts of 12mm.
Preparation method is as follows:
(1) preparation of resin paste: isophthalic resin and shrinking agent PVAc/St copolymer are poured into stainless respectively
In steel container, open high speed dispersor setting speed to 1000r/min, stir 2min；Addition firming agent TBPB,
Firming agent TBPO0.5 part, liquid release agent W9020, antioxidant 626, UV-531 and mill base, set
Rotating speed, to 1200r/min, stirs 10min；
(2) mediate: after adding inorganic fire-retarded mineral filler aluminium hydroxide in kneader, close kneading cover,
Kneader rotating speed is beaten to quickly, pours, after mediating 5min, the resin paste that step (1) mixes into, is quickly turning
Mediating 8min in speed, be subsequently adding the glass fibre of 12mm, kneader rotating speed is beaten at a slow speed, mediates 9min；
(3) extrusion: the dough of dipping fiber step (2) obtained is extruded into small column with extruder further
Billot or pellet block, and pack with the polyethylene film being easily peeled, deposit in the environment of being dried in 25 DEG C
24h i.e. obtains BMC premix material；
(4) compression molding: using 300T press, mould is 250mm × 200mm × 4mm band temperature regulating device
Flat plate mold, mould is warming up to 140 DEG C of chargings, and matched moulds pressurization 8MPa, closure pressing speed is 30mm/min；
After pressurize 90s, sheet forming is taken out in die sinking, and natural cooling room temperature obtains required BMC.
After tested, pressed sheet density is 1.75g/cm3, compacting standard strip carries out quantitative measurement:
Hot strength 40.65MPa, impact strength 37.26KJ/.
From test data it is apparent that compared with embodiments of the invention 1, comparative example is without hollow pottery
The BMC density that porcelain microballon is prepared from is high, intensity is low, and the present invention adds by utilizing hollow ceramic microspheres
It is added in the preparation process of BMC, serves very effective reduction density effect, and keep higher-strength
Purpose.
Embodiment 4:
By a kind of low-density being prepared from by the formula of embodiment 1, high fire-retardance, high-weatherability BMC,
Being applied to integrated suspended ceiling pinch plate, finished product not only has higher intensity and relatively low density, and has high resistance to
Hou Xing, is greatly increased service life.
It should be pointed out that, that above detailed description of the invention is merely to illustrate the present invention rather than limits the model of the present invention
Enclosing, after having read the present invention, the amendment of the various equivalent form of values of the present invention is all fallen by those skilled in the art
In the application claims limited range.
Claims (9)
1. a low-density, high fire-retardance, high-weatherability BMC, it is characterised in that by following weight portion
The raw material of number is prepared from, particularly as follows: unsaturated-resin 50-70 part, shrinking agent 30-50 part, firming agent
1-2 part, releasing agent 3-6 part, hollow ceramic microspheres 30-60 part, antioxidant 5-10 part, mill base 4-10
Part, inorganic fire-retarded mineral filler 200-350 part, glass fibre 50-150 part.
Low-density the most according to claim 1, high fire-retardance, high-weatherability BMC, its feature
Be: described unsaturated-resin be isophthalic resin, adjacent benzene resin, in benzene resin and vinylite
Kind.
Low-density the most according to claim 1, high fire-retardance, high-weatherability BMC, its feature
It is: described shrinking agent is Novel PVA c/St copolymer.
Low-density the most according to claim 1, high fire-retardance, high-weatherability BMC, its feature
It is: described releasing agent is novel liquid release agent.
Low-density the most according to claim 1, high fire-retardance, high-weatherability BMC, its feature
It is that described hollow ceramic microspheres obtains through following process technique: by weight the ratio for 1:1, silane is even
Connection agent h-151 is made into aqueous solution, instills in the hollow ceramic microspheres after drying, stirring after stirring
40-60min, makes inorganic agent fully be coated with hollow ceramic microspheres, and the hollow ceramic microspheres after then processing is put into
In baking oven, oven temperature is maintained at 110 DEG C, and constant temperature is after 3 hours, and it is standby that thermostatic drying chamber is put in taking-up,
The hollow ceramic microspheres mean diameter being prepared from is less than 40 μm, and comprcssive strength is more than 40MPa, and density is less than
0.35g/cm3。
Low-density the most according to claim 1, high fire-retardance, high-weatherability BMC, its feature
It is: described antioxidant is phosphorous acid esters and salicylic acid esters, benzophenone class, benzotriazole UV extinction
Agent compound system.
Low-density the most according to claim 1, high fire-retardance, high-weatherability BMC, its feature
It is: described inorganic fire-retarded mineral material is high fire-retardance level aluminium hydroxide.
Low-density the most according to claim 1, high fire-retardance, high-weatherability BMC, its feature
It is: described glass fibre is the alkali-free glass fibre of 3-25mm.
9. low-density, high fire-retardance, the application of high-weatherability BMC as claimed in claim 1, its
It is characterised by for integrated suspended ceiling pinch plate.
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| CN201610367226.4A CN106009576A (en) | 2016-05-27 | 2016-05-27 | Low-density, high-flame retardation and high-weatherability bulk molding compound and application thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107163528A (en) * | 2017-05-27 | 2017-09-15 | 河南鹏翔模塑有限公司 | A kind of new high resistant retardant composite material |
| CN108084679A (en) * | 2017-11-25 | 2018-05-29 | 黄风山 | Alumina filled UP formulas |
| CN110591406A (en) * | 2018-06-13 | 2019-12-20 | 郑州深澜动力科技有限公司 | Low-density high-flame-retardant SMC battery pack material, preparation method thereof and battery pack |
| 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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| CN103525115A (en) * | 2013-10-23 | 2014-01-22 | 江苏兆鋆新材料科技有限公司 | Low-density bulk molding compound (BMC) and preparation method thereof |
| CN104334595A (en) * | 2012-05-28 | 2015-02-04 | 昭和电工株式会社 | Unsaturated polyester resin composition, molded article thereof, and lamp reflector |
| CN105017739A (en) * | 2014-04-26 | 2015-11-04 | 陈天云 | Lightweight high-strength BMC molding material and preparation method |
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Patent Citations (4)
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| CN104334595A (en) * | 2012-05-28 | 2015-02-04 | 昭和电工株式会社 | Unsaturated polyester resin composition, molded article thereof, and lamp reflector |
| CN102757629A (en) * | 2012-07-30 | 2012-10-31 | 无锡新宏泰电器科技股份有限公司 | Outdoor weather resistant SMC (Sheet Molding Compound) material and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107163528A (en) * | 2017-05-27 | 2017-09-15 | 河南鹏翔模塑有限公司 | A kind of new high resistant retardant composite material |
| CN108084679A (en) * | 2017-11-25 | 2018-05-29 | 黄风山 | Alumina filled UP formulas |
| CN110591406A (en) * | 2018-06-13 | 2019-12-20 | 郑州深澜动力科技有限公司 | Low-density high-flame-retardant SMC battery pack material, preparation method thereof and battery pack |
| 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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