CN107353613A - Low smoke density sheet molding compound of a kind of low-density and preparation method thereof - Google Patents
Low smoke density sheet molding compound of a kind of low-density and preparation method thereof Download PDFInfo
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- CN107353613A CN107353613A CN201710487321.2A CN201710487321A CN107353613A CN 107353613 A CN107353613 A CN 107353613A CN 201710487321 A CN201710487321 A CN 201710487321A CN 107353613 A CN107353613 A CN 107353613A
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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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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- 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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
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- Reinforced Plastic Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention relates to low smoke density sheet molding compound of a kind of low-density and preparation method thereof, it belongs to chemical raw material field.The formula of the low smoke density sheet molding compound of low-density of the present invention includes the material of following mass parts：20 50 parts of unsaturated-resin, 20 30 parts of glass fibre, 20 40 parts of shrinking agent, 50 80 parts of fire-retardant filler, 20 50 parts of low density filler, 0.2 1 parts of initiator, 0.02 0.1 parts of polymerization inhibitor, 0.2 1 parts of thickener, 0.3 1 parts of process auxiliaries, 15 parts of wetting dispersing agent.The invention provides the low flame-retarded resin of mechanical strength higher adjacent benzene-type unsaturated-resin and part smoke density, it is combined using low pole shrinking agent and nonpolar shrinking agent, 3M hollow glass microbeads are added to reduce the density of sheet molding compound, and add the dispersion problem of wetting dispersing agent improvement packing belt, low-density and the low sheet molding compound of smoke density are finally reached, and provides the preparation method of the low smoke density sheet molding compound of low-density.
Description
Technical field
The present invention relates to a kind of moulding compound and preparation method thereof, more particularly, to a kind of low smoke density sheet molding of low-density
Material and preparation method thereof, for solving the problems, such as that common sheet molding compound produces volume of smoke in combustion, its belonging to
Work raw material field.
Background technology
Sheet molding compound technology is a kind of composite shaping intermediate of solid-state, with unsaturated polyester resin, low receipts
Contracting agent resin, filler and glass fibre are main component.The tablet is placed in the mold cavity with specific structure during shaping
Interior, material can flowing be full of mold cavity under high pressure at high temperature, and then crosslinks curing reaction, obtains and mold cavity knot
The completely the same molded product of structure.
How many pairs of respiratory systems of people of smoke amount and the pollution level of environment when simple glass steel burns have a significant impact,
And the demand of the lightweight of glass fiber reinforced plastics product in actual applications is also increasing, this problem is increasingly by the weight of people
Depending on.With the continuous renewal replacement, the continuous lifting of consumer's use demand of each field fibre glass product manufacture performance, people are to sheet
The lightweight of molding product proposes higher requirement.Simultaneously for current large-scale track traffic indoor and outdoor associated components,
Lightweight means stronger usability, and can also cut operating costs, and improves the flexibility of equipment operation；For kitchen table
For the indoor articles such as face, door, low smoke density is then directly closely bound up with the life security of people.
The resin that traditional SMC sheet shape moulding compound uses is isophthalic or the unsaturated polyester resin of p-phenyl, non-pole of arranging in pairs or groups
Property shrinking agent, filler uses calcium carbonate or aluminium hydroxide, then is thickened through peromag, the system content of organics of formation compared with
Height, so that smoke caused by burning is more, smoke density is larger, and product is also relatively heavy.Therefore common sheet molding
Smoke density is larger when material is typically all of a relatively high density and burning, the sheet mould for taking into account low-density and low smoke density not yet occurs
Plastics.
Publication date is on December 14th, 2011, in Publication No. 101514254B Chinese patent, discloses a kind of title
For 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 resin that the patent uses is P17-
951 resins, shrinking agent H852-903, filler are aerosil and aluminium hydroxide ON-904.The density phase of the patent
Smoke density is larger during to higher and burning, the sheet molding compound for taking into account low-density and low smoke density not yet occurs.Therefore it is still deposited
In drawbacks described above.
The content of the invention
It is an object of the invention to overcome above shortcomings in the prior art, and provide the higher neighbour of mechanical strength
Benzene-type unsaturated-resin and the low flame-retarded resin of part smoke density, using low pole shrinking agent and nonpolar shrinking agent phase group
Close, add 3M hollow glass microbeads to reduce the density of sheet molding compound, and add wetting dispersing agent to improve point of packing belt
Sex chromosome mosaicism is dissipated, is finally reached low-density and the low sheet molding compound of smoke density, and provide the low smoke density sheet of above-mentioned low-density
The preparation method of moulding compound.
Technical scheme is used by the present invention solves the above problems：The low smoke density sheet molding compound of the low-density, it is special
Sign is：The formula of the moulding compound includes the material of following mass parts：Unsaturated-resin 20-50 parts, glass fibre 20-30
Part, shrinking agent 20-40 parts, fire-retardant filler 50-80 parts, low density filler 20-50 parts, initiator 0.2-1 parts, polymerization inhibitor
0.02-0.1 parts, thickener 0.2-1 parts, process auxiliaries 0.3-1 parts, wetting dispersing agent 1-5 parts.
Preferably, unsaturated-resin of the present invention is mixed using adjacent benzene-type resin HR-8309 and flame-retarded resin HR-802
Close, mixed proportion 2:1；Adjacent benzene-type resin HR-8309 mechanical strength is preferable, and flame-retarded resin HR-802 smoke density is low.
Preferably, glass fibre of the present invention is the alkali-free glass fibre yarn that is chopped, length is 25.4 mm.
Preferably, shrinking agent of the present invention is the mixture of polystyrene and polymethyl methacrylate, mixing
Ratio is 1:2.
Preferably, fire-retardant filler of the present invention uses 4-10 μm of two kinds of particle diameter alumags, mixing ratio
Example is 1:1-3:1；The filler collaboration filling of two kinds of particle diameters, farthest plays its flame retardant effect, and improve the close of material
Reality and quality.
Preferably, low density filler of the present invention uses 3M hollow glass microbeads, grade K46；Set for reducing
Fat pastes viscosity and improves sheet molding compound mobility.
Preferably, polymerization inhibitor of the present invention is the mixed solution of 1,4-benzoquinone and styrene, mixed proportion 1:9.
Preferably, thickener of the present invention is the mixed solution of magnesium hydroxide and vector resin P51, mixed proportion is
1:4-3:7。
Preferably, process auxiliaries of the present invention use BYK-P9080；Initiator uses the tertiary fourth of perbenzoic acid
Ester；Wetting dispersing agent uses BYK-W996 and BYK-9076 two kinds of mixtures, mixed proportion 1:1-1:3；BYK-P9080 has
There is excellent demolding performace, substitute traditional inner pattern releasing agent applicable zinc stearate, moulding compound can be stablized and improve the mobility of sheet stock, carried
The surface quality of high pressing.
The present invention also provides a kind of preparation method of the low smoke density sheet molding compound of low-density, low using described low-density
Smoke density sheet molding compound, it is characterised in that：Comprise the following steps：
A, it is unsaturated-resin, shrinking agent, filler, low density filler, initiator, polymerization inhibitor, process auxiliaries and moistening is scattered
Agent is weighed with certain proportion, is sufficiently mixed and is sufficiently stirred to obtain resin paste；
B, a certain amount of thickener is weighed；
C, resin paste and thickener are mixed by the on-line mixing system of SMC machine group simultaneously, then passed through with short glass fiber
The processes such as dipping, compacting obtain SMC sheet；
SMC sheet is placed to curing at a certain temperature, after penetration hardness reaches certain limit, heat mould under pressurized conditions d,
It is molded, obtain the sheet molding compound of the low smoke density of high intensity.
The present invention compared with prior art, has advantages below and effect：1st, it is higher present invention employs mechanical strength
The low flame-retarded resin of adjacent benzene-type unsaturated-resin and part smoke density, makes it have preferable mechanical property and reduces smoke density；
2nd, using using low pole shrinking agent and nonpolar shrinking agent combined, 3M hollow glass microbeads are added to reduce sheet mould
The density of plastics, and the dispersion problem of wetting dispersing agent improvement packing belt is added, it is finally reached low-density and smoke density is low
Requirement.
Embodiment
Below by embodiment, the present invention is described in further detail, following examples be explanation of the invention and
The invention is not limited in following examples.
The formula of the low smoke density sheet molding compound of the present embodiment low-density includes the material of following mass parts：Unsaturated-resin
20-50 parts, glass fibre 20-30 parts, shrinking agent 20-40 parts, fire-retardant filler 50-80 parts, low density filler 20-50 parts, draw
Send out agent 0.2-1 parts, polymerization inhibitor 0.02-0.1 parts, thickener 0.2-1 parts, process auxiliaries 0.3-1 parts, wetting dispersing agent 1-5 parts.
Unsaturated-resin in the present embodiment using the preferably adjacent benzene-type resin HR-8309 of mechanical strength and has smoke density
Low flame-retarded resin HR-802 mixing, mixed proportion 2:1.
Glass fibre in the present embodiment is the alkali-free glass fibre yarn that is chopped, and length is 25.4 mm.
Shrinking agent in the present embodiment is polystyrene and the mixture of polymethyl methacrylate, mixed proportion 1:
2。
Fire-retardant filler in the present embodiment uses 4-10 μm of two kinds of particle diameter alumags, mixed proportion 1:1-
3:1。
Low density filler in the present embodiment uses 3M hollow glass microbeads, grade K46.
Polymerization inhibitor in the present embodiment is 1,4-benzoquinone and the mixed solution of styrene, mixed proportion 1:9；
Thickener in the present embodiment is the mixed solution of magnesium hydroxide and vector resin P51, mixed proportion 1:4-3:7.
Process auxiliaries in the present embodiment use BYK-P9080；Initiator uses peroxidized t-butyl perbenzoate；Wetting point
Powder uses BYK-W996 and BYK-9076 two kinds of mixtures, mixed proportion 1:1-1:3.
The present embodiment additionally provides a kind of preparation method of the low smoke density sheet molding compound of low-density, comprises the following steps：
A, it is unsaturated-resin, shrinking agent, filler, low density filler, initiator, polymerization inhibitor, process auxiliaries and moistening is scattered
Agent is weighed with certain proportion, is sufficiently mixed and is sufficiently stirred to obtain resin paste；
B, a certain amount of thickener is weighed；
C, resin paste and thickener are mixed by the on-line mixing system of SMC machine group simultaneously, then passed through with short glass fiber
The processes such as dipping, compacting obtain SMC sheet；
SMC sheet is placed to curing at a certain temperature, after penetration hardness reaches certain limit, heat mould under pressurized conditions d,
It is molded, obtain the sheet molding compound of the low smoke density of high intensity.
By above-mentioned elaboration, those skilled in the art can implement.
Furthermore, it is necessary to illustrate, the specific embodiment, its named title etc. described in this specification can be different,
Above content described in this specification is only to structure example explanation of the present invention.It is all according to patent structure of the present invention
Think equivalence changes or simple change that described construction, feature and principle are done, be included in the protection model of patent of the present invention
In enclosing.Those skilled in the art can make various modifications or benefit to described specific embodiment
Fill or substituted using similar mode, without departing from structure of the invention or surmount model defined in the claims
Enclose, protection scope of the present invention all should be belonged to.
Claims (9)
- A kind of 1. low smoke density sheet molding compound of low-density, it is characterised in that：The formula of the moulding compound includes following mass parts Material：Unsaturated-resin 20-50 parts, glass fibre 20-30 parts, shrinking agent 20-40 parts, fire-retardant filler 50-80 parts are low close Spend filler 20-50 parts, initiator 0.2-1 parts, polymerization inhibitor 0.02-0.1 parts, thickener 0.2-1 parts, process auxiliaries 0.3-1 parts, profit Hygroscopic water powder 1-5 parts.
- 2. the low smoke density sheet molding compound of low-density according to claim 1, it is characterised in that：The unsaturated-resin is adopted Mixed with adjacent benzene-type resin HR-8309 with flame-retarded resin HR-802, mixed proportion 2:1.
- 3. the low smoke density sheet molding compound of low-density according to claim 1, it is characterised in that：The glass fibre is short Alkali-free glass fibre yarn is cut, length is 25.4 mm.
- 4. the low smoke density sheet molding compound of low-density according to claim 1, it is characterised in that：The shrinking agent is poly- The mixture of styrene and polymethyl methacrylate, mixed proportion 1:2.
- 5. the low smoke density sheet molding compound of low-density according to claim 1, it is characterised in that：The fire-retardant filler uses 4-10 μm of two kinds of particle diameter alumags, mixed proportion 1:1-3:1.
- 6. the low smoke density sheet molding compound of low-density according to claim 1, it is characterised in that：The low density filler is adopted With 3M hollow glass microbeads, grade K46.
- 7. the low smoke density sheet molding compound of low-density according to claim 1, it is characterised in that：The polymerization inhibitor is to benzene The mixed solution of quinone and styrene, mixed proportion 1:9；The low smoke density sheet molding compound of low-density according to claim 1, it is characterised in that：The thickener is hydroxide The mixed solution of magnesium and vector resin P51, mixed proportion 1:4-3:7.
- 8. the low smoke density sheet molding compound of low-density according to claim 1, it is characterised in that：The process auxiliaries use BYK-P9080；Initiator uses peroxidized t-butyl perbenzoate；Wetting dispersing agent uses two kinds of BYK-W996 and BYK-9076 Mixture, mixed proportion 1:1-1:3.
- A kind of 9. preparation method of the low smoke density sheet molding compound of low-density, using the low cigarette of low-density described in claim 1-9 Density sheet moulding compound, it is characterised in that：Comprise the following steps：A, it is unsaturated-resin, shrinking agent, filler, low density filler, initiator, polymerization inhibitor, process auxiliaries and moistening is scattered Agent is weighed with certain proportion, is sufficiently mixed and is sufficiently stirred to obtain resin paste；B, a certain amount of thickener is weighed；C, resin paste and thickener are mixed by the on-line mixing system of SMC machine group simultaneously, then passed through with short glass fiber The processes such as dipping, compacting obtain SMC sheet；SMC sheet is placed to curing at a certain temperature, after penetration hardness reaches certain limit, heat mould under pressurized conditions d, It is molded, obtain the sheet molding compound of the low smoke density of high intensity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710487321.2A CN107353613A (en) | 2017-06-23 | 2017-06-23 | Low smoke density sheet molding compound of a kind of low-density and preparation method thereof |
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| CN201710487321.2A CN107353613A (en) | 2017-06-23 | 2017-06-23 | Low smoke density sheet molding compound of a kind of low-density and preparation method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108084679A (en) * | 2017-11-25 | 2018-05-29 | 黄风山 | Alumina filled UP formulas |
| CN108219414A (en) * | 2017-12-20 | 2018-06-29 | 安徽鑫普瑞复合材料有限公司 | A kind of high intensity low density SMC moulding compounds and its manufacturing method |
| CN108559297A (en) * | 2018-05-15 | 2018-09-21 | 江苏兆鋆新材料股份有限公司 | A kind of suppression cigarette saturated resin composite material and preparation method |
| 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 |
| CN110713703A (en) * | 2018-07-15 | 2020-01-21 | 河北盛伟基业玻璃钢集团有限公司 | Method for manufacturing SMC aviation warning ball |
| CN111138883A (en) * | 2018-11-06 | 2020-05-12 | 振石集团华美新材料有限公司 | High-strength and high-flame-retardance sheet molding compound and preparation method thereof |
| CN111925638A (en) * | 2020-07-31 | 2020-11-13 | 广东百汇达新材料有限公司 | Efficient heat-preservation SMC sheet molding compound and preparation method thereof |
| CN111944293A (en) * | 2020-07-31 | 2020-11-17 | 广东百汇达新材料有限公司 | Low-density foamed BMC material and preparation method thereof |
| CN111978477A (en) * | 2019-05-24 | 2020-11-24 | 比亚迪股份有限公司 | Sheet molding compound raw material, sheet molding compound product, and preparation method and application thereof |
| CN113462183A (en) * | 2021-04-01 | 2021-10-01 | 句容市久诺复合材料有限公司 | SMC composite material with high flame retardance and low density |
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| CN106280530A (en) * | 2016-08-05 | 2017-01-04 | 振石集团华美新材料有限公司 | A kind of acid and alkali-resistance sheet molding compound and preparation method thereof |
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| CN106280530A (en) * | 2016-08-05 | 2017-01-04 | 振石集团华美新材料有限公司 | A kind of acid and alkali-resistance sheet molding compound and preparation method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108084679A (en) * | 2017-11-25 | 2018-05-29 | 黄风山 | Alumina filled UP formulas |
| CN108219414A (en) * | 2017-12-20 | 2018-06-29 | 安徽鑫普瑞复合材料有限公司 | A kind of high intensity low density SMC moulding compounds and its manufacturing method |
| CN108559297A (en) * | 2018-05-15 | 2018-09-21 | 江苏兆鋆新材料股份有限公司 | A kind of suppression cigarette saturated resin composite material and preparation method |
| 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 |
| CN110713703A (en) * | 2018-07-15 | 2020-01-21 | 河北盛伟基业玻璃钢集团有限公司 | Method for manufacturing SMC aviation warning ball |
| CN111138883A (en) * | 2018-11-06 | 2020-05-12 | 振石集团华美新材料有限公司 | High-strength and high-flame-retardance sheet molding compound and preparation method thereof |
| CN111978477A (en) * | 2019-05-24 | 2020-11-24 | 比亚迪股份有限公司 | Sheet molding compound raw material, sheet molding compound product, and preparation method and application thereof |
| CN111978477B (en) * | 2019-05-24 | 2021-10-22 | 比亚迪股份有限公司 | Sheet molding compound raw material, sheet molding compound product, and preparation method and application thereof |
| CN111925638A (en) * | 2020-07-31 | 2020-11-13 | 广东百汇达新材料有限公司 | Efficient heat-preservation SMC sheet molding compound and preparation method thereof |
| CN111944293A (en) * | 2020-07-31 | 2020-11-17 | 广东百汇达新材料有限公司 | Low-density foamed BMC material and preparation method thereof |
| CN113462183A (en) * | 2021-04-01 | 2021-10-01 | 句容市久诺复合材料有限公司 | SMC composite material with high flame retardance and low density |
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