CN103613715A - Sheet molding compound with high stability and high uniformity and preparation method therefor - Google Patents
Sheet molding compound with high stability and high uniformity and preparation method therefor Download PDFInfo
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- CN103613715A CN103613715A CN201310272223.9A CN201310272223A CN103613715A CN 103613715 A CN103613715 A CN 103613715A CN 201310272223 A CN201310272223 A CN 201310272223A CN 103613715 A CN103613715 A CN 103613715A
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- molding compound
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- vinylbenzene
- titanium dioxide
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Abstract
The invention belongs to the sheet molding compound technology field and especially relates to a sheet molding compound with high stability and high uniformity and a preparation method therefor. The sheet molding compound is composed of 23.8% of unsaturated polyester resins, 4.7% of low shrink agents, 0.37% of tert-butyl peroxybenzoate, 0.95% of titanium dioxide, 1.28% of zinc stearate, 0.033% of p-benzoquinone, 0.73% of styrene, 36.67% of calcium carbonate, 18.3% of aluminum hydroxide, 0.37% of 2,6-di-tert-butyl-p-methylphenol, 0.37% of magnesium oxide, 1.1% of antimonous oxide, 0.37% of carbon tetrachloride, 9.9% of glass fibers and 0.92% of PE carrier films. The beneficial effects of the sheet molding compound are that, there are not viscosity reducers, and the cost is lowered; the adjustable range of the content of the glass fibers is wide; the thickening is reasonable and has good effects, which is convenient for mold pressing; The sheet molding compound is advantaged by low shrinkage rate, difficult deformation, good dimensional stability, long storage time, high efficiency, labor cost saving, and high intensity and toughness which far exceed national standards.
Description
Technical field
The invention belongs to sheet molding compound technical field, relate in particular to the high evenly sheet molding compound and preparation method thereof of a kind of high stable.
Background technology
Sheet molding compound has superior electric property, corrosion resistance nature, and the advantage such as light weight and engineering design are easy, flexible, its mechanical property can compare favourably with part metals material, thereby is widely used in the industries such as carrier vehicle, building, electronics/electric.The interpolation of employing more than in traditional preparation method viscosity-depression agents etc. cause cost higher, complex manufacturing, and goods poor stability, easily distortion, uniformity coefficient is low and the storage time is short, and thickening effectiveness is poor, and shaping speed is unfavorable for mold pressing slowly.
Summary of the invention
The present invention has overcome above shortcoming, provide a kind of stability high, all with strong sheet molding compound of degree and preparation method thereof.
The present invention realizes by following technique means, and the high evenly sheet molding compound and preparation method thereof of a kind of high stable is prepared by each component of following weight percent:
Unsaturated polyester resin 23% ~ 25%
Shrinking agent 3% ~ 5.6%
Peroxidized t-butyl perbenzoate TBPB 0.25% ~ 0.69%
Titanium dioxide 0.85% ~ 1.5%
Zinic stearas 1.2% ~ 2.4%
Para benzoquinone 0.03 ~ 0.05%
Vinylbenzene 0.7% ~ 1.2%
Calcium carbonate 36% ~ 40%
Aluminium hydroxide 18% ~ 20%
2,6 ditertiary butyl p cresol 0.36% ~ 0.45%
Magnesium oxide 0.36% ~ 0.45%
Antimonous oxide 1.1% ~ 1.65%
Tetracol phenixin 0.36% ~ 0.45%
Glass fibre 9.9% ~ 13%
PE carrier film 0.9% ~ 1.5%
Described sheet molding compound, prepared by each component by following weight percent: unsaturated polyester resin 23.8%, shrinking agent 4.7%, peroxidized t-butyl perbenzoate TBPB0.37%, titanium dioxide 0.95%, Zinic stearas 1.28%, para benzoquinone 0.033%, vinylbenzene 0.73%, calcium carbonate 36.67%, aluminium hydroxide 18.3%, 2,6 ditertiary butyl p cresol 0.37%, magnesium oxide 0.37%, antimonous oxide 1.1%, tetracol phenixin 0.37%, glass fibre 9.9%, PE carrier film 0.92%; Wherein titanium dioxide needed 200 mesh sieves before using.
Described sheet molding compound, first adds vinylbenzene in mixer during operation, while stirring granules of polystyrene is poured in bucket, after vinylbenzene and polystyrene stir, after static 2h, uses.
In described sheet molding compound, glass fibre adopts e-glass fiber roving, and length is 25 millimeters.
The preparation method who the invention also discloses a kind of above-mentioned sheet molding compound, makes by following steps:
Mixer is put to weighing apparatus and claimed its weight, peeling, in allocation sheet ratio, unsaturated polyester resin and shrinking agent are added in mixer successively again, after weighing, be pushed under stirrer, press host-initiated button, after engine sound is steady, open power-on button, rotate speed control switch (about 400r/min), after first adding vinylbenzene and polystyrene blends, add while stirring peroxidized t-butyl perbenzoate TBPB, titanium dioxide, Zinic stearas, para benzoquinone, antimonous oxide, tetracol phenixin, 2, 6-ditertbutylparacresol (first adding liquid post-reinforcing body), after stirring, add calcium carbonate, aluminium hydroxide (about 1000r/min), continue to stir until material evenly (prevents that material stirring is overheated so that raw material from solidifying).If there is meal to stick a barrel inwall in whipping process, with hard thing, knock a barrel outer wall, concussion comes off it.
Beneficial effect of the present invention is: without viscosity-depression agent, reduce costs; Content of glass fiber capable of regulating amplitude is large; Thickening is rationally effective, is convenient to mold pressing; Shrinking percentage is low, not yielding, and the good shelf-time of dimensional stability is long; Efficiency is high, saves labour turnover, and intensity and toughness are higher, superstate standard far away.
Embodiment
Embodiment 1
According to following ratio, take each raw material:
Unsaturated polyester resin 65kg, shrinking agent 13kg, peroxidized t-butyl perbenzoate TBPB1kg, titanium dioxide 2.6kg, Zinic stearas 3.5kg, para benzoquinone 0.09kg, vinylbenzene 2kg, calcium carbonate 100kg, aluminium hydroxide 50kg, 2,6 ditertiary butyl p cresol 1kg, magnesium oxide 1kg, antimonous oxide 3kg, tetracol phenixin 1kg, e-glass fiber roving 27kg, PE carrier film 2.5kg.
Concrete preparation process comprises:
(1) mixer is put to weighing apparatus and claimed its weight, peeling, then in allocation sheet ratio, unsaturated polyester resin and shrinking agent are added in mixer successively, after weighing, be pushed under stirrer, press host-initiated button
(2) after engine sound is steady, open power-on button, rotate speed control switch (about 400r/min), after first adding vinylbenzene and polystyrene blends, add while stirring peroxidized t-butyl perbenzoate TBPB, titanium dioxide, Zinic stearas, para benzoquinone, antimonous oxide, tetracol phenixin, 2,6 ditertiary butyl p cresol (first adding liquid post-reinforcing body), after stirring, add calcium carbonate, aluminium hydroxide (about 1000r/min), continue to stir until material is even.
Embodiment 2
According to following ratio, take each raw material:
Unsaturated polyester resin 59kg, shrinking agent 11kg, peroxidized t-butyl perbenzoate TBPB0.85kg, titanium dioxide 2.4kg, Zinic stearas 3.0kg, para benzoquinone 0.08kg, vinylbenzene 1.5kg, calcium carbonate 80kg, aluminium hydroxide 46kg, 2,6 ditertiary butyl p cresol 0.8kg, magnesium oxide 0.8kg, antimonous oxide 2.8kg, tetracol phenixin 0.8kg, e-glass fiber roving 23kg, PE carrier film 2.2kg.
Preparation process is with embodiment 1.
Embodiment 3
According to following ratio, take each raw material:
Unsaturated polyester resin 72kg, shrinking agent 16kg, peroxidized t-butyl perbenzoate TBPB1.2kg, titanium dioxide 2.9kg, Zinic stearas 3.8kg, para benzoquinone 1.1kg, vinylbenzene 2.3kg, calcium carbonate 115kg, aluminium hydroxide 55kg, 2,6 ditertiary butyl p cresol 1.2kg, magnesium oxide 1.2kg, antimonous oxide 3.3kg, tetracol phenixin 1.2kg, e-glass fiber roving 31kg, PE carrier film 2.8kg.
Preparation process is with embodiment 1.
Claims (6)
1. high evenly sheet molding compound and preparation method thereof of a high stable, is characterized in that these plastics are prepared by each component of following weight percent:
Unsaturated polyester resin 23% ~ 25%
Shrinking agent 3% ~ 5.6%
Peroxidized t-butyl perbenzoate TBPB 0.25% ~ 0.69%
Titanium dioxide 0.85% ~ 1.5%
Zinic stearas 1.2% ~ 2.4%
Para benzoquinone 0.03 ~ 0.05%
Vinylbenzene 0.7% ~ 1.2%
Calcium carbonate 36% ~ 40%
Aluminium hydroxide 18% ~ 20%
2,6 ditertiary butyl p cresol 0.36% ~ 0.45%
Magnesium oxide 0.36% ~ 0.45%
Antimonous oxide 1.1% ~ 1.65%
Tetracol phenixin 0.36% ~ 0.45%
Glass fibre 9.9% ~ 13%
PE carrier film 0.9% ~ 1.5%
According to claim 1, the high evenly sheet molding compound and preparation method thereof of a kind of high stable, it is characterized in that being prepared by each component of following weight percent: unsaturated polyester resin 23.8%, shrinking agent 4.7%, peroxidized t-butyl perbenzoate TBPB0.37%, titanium dioxide 0.95%, Zinic stearas 1.28%, para benzoquinone 0.033%, vinylbenzene 0.73%, calcium carbonate 36.67%, aluminium hydroxide 18.3%, 2,6 ditertiary butyl p cresol 0.37%, magnesium oxide 0.37%, antimonous oxide 1.1%, tetracol phenixin 0.37%, glass fibre 9.9%, PE carrier film 0.92%.
2. according to claim 1, the high evenly sheet molding compound and preparation method thereof of a kind of high stable, is characterized in that needing 200 mesh sieves before titanium dioxide is used.
3. according to claim 1, the high evenly sheet molding compound and preparation method thereof of a kind of high stable, is characterized in that vinylbenzene to add in mixer, while stirring granules of polystyrene is poured in bucket, after vinylbenzene and polystyrene stir, after static 2h, uses.
4. according to claim 1, the high evenly sheet molding compound and preparation method thereof of a kind of high stable, is characterized in that glass fibre adopts e-glass fiber roving, and length is 25 millimeters.
5. the preparation method of sheet molding compound according to claim 1, is characterized in that making by following steps:
(1) mixer is put to weighing apparatus and claimed its weight, peeling, then in allocation sheet ratio, unsaturated polyester resin and shrinking agent are added in mixer successively, after weighing, be pushed under stirrer, press host-initiated button.
6.(2) after engine sound is steady, open power-on button, rotate speed control switch (about 400r/min), after first adding vinylbenzene and polystyrene blends, add while stirring peroxidized t-butyl perbenzoate TBPB, titanium dioxide, Zinic stearas, para benzoquinone, antimonous oxide, tetracol phenixin, 2,6 ditertiary butyl p cresol (first adding liquid post-reinforcing body), after stirring, add calcium carbonate, aluminium hydroxide (about 1000r/min), continue to stir until material is even.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310272223.9A CN103613715A (en) | 2013-07-02 | 2013-07-02 | Sheet molding compound with high stability and high uniformity and preparation method therefor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310272223.9A CN103613715A (en) | 2013-07-02 | 2013-07-02 | Sheet molding compound with high stability and high uniformity and preparation method therefor |
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| CN103613715A true CN103613715A (en) | 2014-03-05 |
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| CN201310272223.9A Pending CN103613715A (en) | 2013-07-02 | 2013-07-02 | Sheet molding compound with high stability and high uniformity and preparation method therefor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103965412A (en) * | 2014-05-23 | 2014-08-06 | 大连当代兴达发展有限公司 | Anti-mould flame-retardant high-temperature-resistant sheet-shaped molding compound and preparation method thereof |
| CN106290732A (en) * | 2016-08-23 | 2017-01-04 | 泰山玻璃纤维有限公司 | Evaluate the leaching of roving folded yarn and wear simple and easy method and the device thereof of performance |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034937A (en) * | 1988-12-26 | 1989-08-23 | 国家建材工业局上海玻璃钢研究所 | Sliced moulded plastics for explosion-proof products |
| WO1997033942A1 (en) * | 1996-03-12 | 1997-09-18 | Nippon Shokubai Co., Ltd. | Unsaturated polyester resin composition and sheetlike molding material |
| CN101696320A (en) * | 2009-08-21 | 2010-04-21 | 振石集团华美复合新材料有限公司 | Continuously-directional glass fiber reinforcement unsaturated polyester sheet molding compound |
| 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 |
-
2013
- 2013-07-02 CN CN201310272223.9A patent/CN103613715A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034937A (en) * | 1988-12-26 | 1989-08-23 | 国家建材工业局上海玻璃钢研究所 | Sliced moulded plastics for explosion-proof products |
| WO1997033942A1 (en) * | 1996-03-12 | 1997-09-18 | Nippon Shokubai Co., Ltd. | Unsaturated polyester resin composition and sheetlike molding material |
| CN101696320A (en) * | 2009-08-21 | 2010-04-21 | 振石集团华美复合新材料有限公司 | Continuously-directional glass fiber reinforcement unsaturated polyester sheet molding compound |
| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103965412A (en) * | 2014-05-23 | 2014-08-06 | 大连当代兴达发展有限公司 | Anti-mould flame-retardant high-temperature-resistant sheet-shaped molding compound and preparation method thereof |
| CN106290732A (en) * | 2016-08-23 | 2017-01-04 | 泰山玻璃纤维有限公司 | Evaluate the leaching of roving folded yarn and wear simple and easy method and the device thereof of performance |
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Application publication date: 20140305 |