CN103613915A - Bulk molding compound with high stability and preparation method therefor - Google Patents
Bulk molding compound with high stability and preparation method therefor Download PDFInfo
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- CN103613915A CN103613915A CN201310272169.8A CN201310272169A CN103613915A CN 103613915 A CN103613915 A CN 103613915A CN 201310272169 A CN201310272169 A CN 201310272169A CN 103613915 A CN103613915 A CN 103613915A
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- molding compound
- bulk molding
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- high stability
- vinylbenzene
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Abstract
The invention provides a bulk molding compound with high stability and a preparation method therefor, and belongs to the bulk molding compound technology field. The bulk molding compound is composed of unsaturated polyester resins, low shrink agents, p-benzoquinone, styrene, tert-butyl ester, zinc stearate, titanium dioxide, calcium carbonate, aluminum hydroxide, glass fibers, 2,6-di-tert-butyl-p-methylphenol, antimonous oxide, and carbon tetrachloride. The stability is raised with addition of 2,6-di-tert-butyl-p-methylphenol. Part of low shrink agents are replaced by a mixed solution of polystyrene PS and styrene, and the cost is lowered. The consumption of aluminum hydroxide is lowered and the cost is lowered with addition of antimonous oxide and carbon tetrachloride.
Description
Technical field
The invention belongs to Bulk Molding Compound technical field, relate in particular to a kind of high stability Bulk Molding Compound and preparation method thereof.
Background technology
Bulk Molding Compound is added with the resin compound dipping staple fibre of various auxiliary agents and the bulk Preblend that forms, is the intermediate materials of composite product.According to different final Application Areass, the matrix material of preparation is controlling dimension accurately, and flame retardant resistance and tracking resistance are good, has very high dielectric strength, erosion resistance and resistance to soiling, and mechanical property is remarkable.The flow characteristics of Bulk Molding Compound and insulation and flame retardant resistance are fabulous, very applicable for details and the accurate various application of dimensional requirement.
The group of application fills moulding compound deficient in stability in the market, and cost is higher.
Summary of the invention
The object of this invention is to provide a kind of high stability Bulk Molding Compound and preparation method thereof, the deficiency of being mentioned to solve in prior art.
The present invention is achieved by the following technical solutions: a kind of high stability Bulk Molding Compound, and these plastics are prepared by each component of following weight percent:
Unsaturated polyester resin 12%-19%
Shrinking agent 4%-10%
Para benzoquinone 0.03%-0.07%
Vinylbenzene 0.45%-0.65%
Tert-butyl ester 0.20%-0.35%
Zinic stearas 0.50%-1.20%
Titanium dioxide 0.30%-0.64%
Calcium carbonate 30%-45%
Aluminium hydroxide 15%-25%
Glass fibre 12%-20%
2,6 ditertiary butyl p cresol 0.1%-0.3%
Antimonous oxide 0.55%-0.89%
Tetracol phenixin 0.15%-0.36%
The preferred peroxidized t-butyl perbenzoate of the described tert-butyl ester.
Described glass fibre is short glass fiber, and length is 2cm.
Described Bulk Molding Compound is prepared by each component of following weight percent: unsaturated polyester resin 15%, low receipts solvent 6%, para benzoquinone 0.05%, vinylbenzene 0.55%, the tert-butyl ester 0.25%, Zinic stearas 0.95%, titanium dioxide 0.55%, calcium carbonate 38%, aluminium hydroxide 20%, glass fibre 16%, 2,6-ditertbutylparacresol 0.2%, antimonous oxide 0.75%, tetracol phenixin 0.25%.
The preparation method who the invention also discloses a kind of above-mentioned Bulk Molding Compound, makes by following steps:
(1) preparation of solution before batching: beaker is put to the peeling of weighing on platform balance, is added vinylbenzene, peeling, then add wherein 2,6 ditertbutylparacresols, stirring until its all melt;
(2) mixer is placed on weighing apparatus, claim its weight peeling, take respectively unsaturated polyester resin, shrinking agent, the tert-butyl ester, titanium dioxide, Zinic stearas, para benzoquinone, vinylbenzene, antimonous oxide, tetracol phenixin and 2,6-ditertbutylparacresol, pour into successively in kneader, again aluminium hydroxide and calcium carbonate are poured in kneader, closed kneading cover, reverse 25 minutes;
(3) open kneading cover and look the dry wet degree of sheet material, if sheet material is more dry, can add appropriate vinylbenzene, stir after 10min, fall apart and add glass fibre, make it evenly be dissipated to kneader everywhere, 4min is stirred in continuation can turn over cylinder pack.
Beneficial effect of the present invention is: add 2,6 ditertiary butyl p cresol to make its stability high; Polystyrene PS and cinnamic mixing solutions have replaced part shrinking agent, make its cost, antimonous oxide and tetracol phenixin add the consumption that has reduced aluminium hydroxide, reduce costs.
Embodiment
Embodiment 1
According to following ratio, take each raw material:
Unsaturated polyester resin 59kg, low receipts solvent 25kg, para benzoquinone 0.02kg, vinylbenzene 1.98kg, tert-butyl ester 0.92kg, Zinic stearas 3.8kg, titanium dioxide 2.3kg, calcium carbonate 150kg, aluminium hydroxide 80kg, glass fibre 63kg, 2,6-ditertbutylparacresol 0.8kg, antimonous oxide 3kg, tetracol phenixin 1kg.
Concrete preparation process comprises:
(1) preparation of solution before batching: beaker is put to the peeling of weighing on platform balance, is added vinylbenzene, peeling, then add wherein 2,6 ditertbutylparacresols, stirring until its all melt;
(2) mixer is placed on weighing apparatus, claim its weight peeling, take respectively unsaturated polyester resin, shrinking agent, the tert-butyl ester, titanium dioxide, Zinic stearas, para benzoquinone, vinylbenzene, antimonous oxide, tetracol phenixin and 2,6-ditertbutylparacresol, pour into successively in kneader, again aluminium hydroxide and calcium carbonate are poured in kneader, closed kneading cover, reverse 25 minutes;
(3) open kneading cover and look the dry wet degree of sheet material, if sheet material is more dry, can add appropriate vinylbenzene, stir after 10min, fall apart and add glass fibre, make it evenly be dissipated to kneader everywhere, 4min is stirred in continuation can turn over cylinder pack.
Embodiment 2
According to following ratio, take each raw material:
Unsaturated polyester resin 46kg, low receipts solvent 23kg, para benzoquinone 0.015kg, vinylbenzene 1.37kg, tert-butyl ester 0.87kg, Zinic stearas 3.2kg, titanium dioxide 1.9kg, calcium carbonate 135kg, aluminium hydroxide 75kg, glass fibre 60kg, 2,6-ditertbutylparacresol 0.5kg, antimonous oxide 2.4kg, tetracol phenixin 0.6kg.
Preparation process is with embodiment 1.
Embodiment 3
According to following ratio, take each raw material:
Unsaturated polyester resin 62kg, low receipts solvent 28kg, para benzoquinone 0.025kg, vinylbenzene 2.05kg, tert-butyl ester 1.12kg, Zinic stearas 4.1kg, titanium dioxide 2.6kg, calcium carbonate 165kg, aluminium hydroxide 84kg, glass fibre 68kg, 2,6-ditertbutylparacresol 1.0kg, antimonous oxide 3.6kg, tetracol phenixin 1.4kg.
Preparation process is with embodiment 1.
Claims (4)
1. a high stability Bulk Molding Compound, is characterized in that: these plastics are prepared by each component of following weight percent:
Unsaturated polyester resin 12%-19%
Shrinking agent 4%-10%
Para benzoquinone 0.03%-0.07%
Vinylbenzene 0.45%-0.65%
Tert-butyl ester 0.20%-0.35%
Zinic stearas 0.50%-1.20%
Titanium dioxide 0.30%-0.64%
Calcium carbonate 30%-45%
Aluminium hydroxide 15%-25%
Glass fibre 12%-20%
2,6 ditertiary butyl p cresol 0.1%-0.3%
Antimonous oxide 0.55%-0.89%
Tetracol phenixin 0.15%-0.36%
High stability Bulk Molding Compound according to claim 1, is characterized in that: the preferred peroxidized t-butyl perbenzoate of the described tert-butyl ester.
2. high stability Bulk Molding Compound according to claim 1, is characterized in that: described glass fibre is short glass fiber, and length is 2cm.
3. according to the high stability Bulk Molding Compound described in the arbitrary claim of claim 1-3, it is characterized in that: described Bulk Molding Compound is prepared by each component of following weight percent: unsaturated polyester resin 15%, low receipts solvent 6%, para benzoquinone 0.05%, vinylbenzene 0.55%, the tert-butyl ester 0.25%, Zinic stearas 0.95%, titanium dioxide 0.55%, calcium carbonate 38%, aluminium hydroxide 20%, glass fibre 16%, 2,6 ditertiary butyl p cresol 0.2%, antimonous oxide 0.75%, tetracol phenixin 0.25%.
4. a preparation method for high stability Bulk Molding Compound as claimed in claim 1, is characterized in that: by following steps, make:
(1) preparation of solution before batching: beaker is put to the peeling of weighing on platform balance, is added vinylbenzene, peeling, then add wherein 2,6 ditertbutylparacresols, stirring until its all melt;
(2) mixer is placed on weighing apparatus, claim its weight peeling, take respectively unsaturated polyester resin, shrinking agent, the tert-butyl ester, titanium dioxide, Zinic stearas, para benzoquinone, vinylbenzene, antimonous oxide, tetracol phenixin and 2,6-ditertbutylparacresol, pour into successively in kneader, again aluminium hydroxide and calcium carbonate are poured in kneader, closed kneading cover, reverse 25 minutes;
(3) open kneading cover and look the dry wet degree of sheet material, if sheet material is more dry, can add appropriate vinylbenzene, stir after 10min, fall apart and add glass fibre, make it evenly be dissipated to kneader everywhere, 4min is stirred in continuation can turn over cylinder pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310272169.8A CN103613915A (en) | 2013-07-02 | 2013-07-02 | Bulk molding compound with high stability and preparation method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310272169.8A CN103613915A (en) | 2013-07-02 | 2013-07-02 | Bulk molding compound with high stability and preparation method therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103613915A true CN103613915A (en) | 2014-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310272169.8A Pending CN103613915A (en) | 2013-07-02 | 2013-07-02 | Bulk molding compound with high stability and preparation method therefor |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101121815A (en) * | 2007-09-07 | 2008-02-13 | 常熟东南塑料有限公司 | Granular unsaturated polyester die plastic |
| CN101343407A (en) * | 2008-08-22 | 2009-01-14 | 常熟东南塑料有限公司 | Halogen-free flame-proof unsaturated polyester molding compound |
| CN101575443A (en) * | 2009-03-17 | 2009-11-11 | 无锡新宏泰电器科技股份有限公司 | Non-ignitable SMC polyester moulding compound for rail transit and preparation method thereof |
| CN102977567A (en) * | 2012-08-22 | 2013-03-20 | 常熟市筑紫机械有限公司 | Fire retardation unsaturated polyester molding compound |
| CN102993382A (en) * | 2012-08-22 | 2013-03-27 | 常熟市筑紫机械有限公司 | Preparation method of flame-retardant unsaturated polyester mould plastic |
| CN103160094A (en) * | 2011-12-16 | 2013-06-19 | 常熟市发东塑业有限公司 | Halogen-free flame-retardation polystyrene-modified unsaturated polyester glass reinforced plastic molding compound |
-
2013
- 2013-07-02 CN CN201310272169.8A patent/CN103613915A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101121815A (en) * | 2007-09-07 | 2008-02-13 | 常熟东南塑料有限公司 | Granular unsaturated polyester die plastic |
| CN101343407A (en) * | 2008-08-22 | 2009-01-14 | 常熟东南塑料有限公司 | Halogen-free flame-proof unsaturated polyester molding compound |
| CN101575443A (en) * | 2009-03-17 | 2009-11-11 | 无锡新宏泰电器科技股份有限公司 | Non-ignitable SMC polyester moulding compound for rail transit and preparation method thereof |
| CN103160094A (en) * | 2011-12-16 | 2013-06-19 | 常熟市发东塑业有限公司 | Halogen-free flame-retardation polystyrene-modified unsaturated polyester glass reinforced plastic molding compound |
| CN102977567A (en) * | 2012-08-22 | 2013-03-20 | 常熟市筑紫机械有限公司 | Fire retardation unsaturated polyester molding compound |
| CN102993382A (en) * | 2012-08-22 | 2013-03-27 | 常熟市筑紫机械有限公司 | Preparation method of flame-retardant unsaturated polyester mould plastic |
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Application publication date: 20140305 |