CN102977283A - Fire retardation and electric conduction unsaturated polyester molding compound preparation method - Google Patents
Fire retardation and electric conduction unsaturated polyester molding compound preparation method Download PDFInfo
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- CN102977283A CN102977283A CN2012103002917A CN201210300291A CN102977283A CN 102977283 A CN102977283 A CN 102977283A CN 2012103002917 A CN2012103002917 A CN 2012103002917A CN 201210300291 A CN201210300291 A CN 201210300291A CN 102977283 A CN102977283 A CN 102977283A
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Abstract
The invention relates to a fire retardation and electric conduction unsaturated polyester molding compound preparation method, and belongs to the technical field of polymer material preparation. The preparation method comprises: weighing an unsaturated polyester resin, a low shrinkage additive and an unsaturated olefin monomer according to a certain weight part ratio, and pouring the weighed materials to a pulp beater to rapidly stir; weighing an initiator, a polymerization inhibitor, a metal oxide and electric conduction carbon black according to a certain weight part ratio, pouring the weighed materials to the pulp beater, and continuously stirring; transferring the mixed material to a kneader to knead; weighing a filler, a fire retardation agent, a metal phosphate and a mold releasing agent according to a certain weight part ratio, adding the weighed materials to the kneader to knead; and weighing reinforcing fibers according to a certain weight part ratio, and adding the reinforcing fibers to the kneader to knead to obtain the fire retardation and electric conduction unsaturated polyester molding compound, wherein the fire retardation and electric conduction unsaturated polyester molding compound has characteristics of good strength, low shrinkage and effective charge accumulation elimination. In addition, test results show that a bending strength is 85 MPa, an impact strength is 32 KJ/m<2>, a shrinkage rate is less than 0.15%, and vertical burning achieves the (UL-94-V-03mm)V-0 level.
Description
Technical field
The invention belongs to field of polymer material preparing technology, be specifically related to a kind of preparation method of fire-retardant conduction unsaturated polyester die plastic
Background technology
Known, owing to form easily charge accumulated after the long-time use of plastics, thus limited to a certain extent its range of application.For example in fire prevention, the strict occasion of anti-electrostatic and to require harsh electric product to use to anti-electrostatic very careful.Therefore, preparation had not only had excellent intensity, but also has had low contractive effect and can avoid the unsaturated polyester die plastic of charge accumulated to have positive effect, for this reason, the applicant has done useful research, and technical scheme described below produces under this background
Summary of the invention
Task of the present invention provides a kind of preparation method of fire-retardant conduction unsaturated polyester die plastic, and the conduction unsaturated polyester die plastic that is obtained by the method has excellent intensity, good low-shrinkage, the flame retardant properties of standing out from one's fellows and can the charge accumulated phenomenon not occur and use and guarantee safety because of long-time the use.
Task of the present invention is finished like this, a kind of preparation method of fire-retardant conduction unsaturated polyester die plastic, it is 45 ~ 47 parts of the unsaturated polyester resins that will take by weighing by weight first, rapid stirring 5-10min in 25 ~ 29 parts of low shrinkage additives and 0.6 ~ 1.2 part of input hollander of undersaturated olefinic monomer, then drop into 0.51 ~ 0.78 part of the initiator take by weighing by weight, 0.006 ~ 0.007 part of stopper, 1～2 part of 0.11 ~ 0.14 part of metal oxide and conductive carbon black, continue to stir 15-30min, then change over to and mediate 4-8min in the kneader, then add again 125 ~ 170 parts of the fillers that take by weighing by weight in the kneader, 5 ~ 9 parts of fire retardants, 2.3 ~ 2.9 parts of 2 ~ 4 parts of metal phosphates and releasing agents, then mediate 20-30min, 32 ~ 37 parts of the fortifying fibres that at last adding takes by weighing by weight, and and then mediate 5-10min, obtain fire-retardant conduction unsaturated polyester die plastic.
In a specific embodiment of the present invention, described unsaturated polyester resin is metaphenylene unsaturated polyester resin, and described low shrinkage additive is polymethylmethacrylate type low shrinkage additive, and the solid content of this low shrinkage additive is 39 ~ 40%.
In another specific embodiment of the present invention, described ethylenic unsaturation hydrocarbon monomer is the Phthalic acid, diallyl ester monomer.
In another specific embodiment of the present invention, described initiator is the benzoyl peroxide diisopropylbenzene(DIPB), and described stopper is para benzoquinone.
In another specific embodiment of the present invention, described metal oxide is calcium oxide, and described filler is stone flour.
Also have in the specific embodiment of the present invention, described fire retardant is octabromodiphenyl ether or C 14 H 4 Br 8.
More of the present invention and in specific embodiment, described metal phosphate is ammonium polyphosphate.
In of the present invention and then specific embodiment, described releasing agent is lithium stearate.
Of the present invention again more and in specific embodiment, described fortifying fibre is that length is the alkali free glass fibre of 3 mm.
In again of the present invention and then specific embodiment, the median size of described conductive carbon black is 50um.
The fire-retardant conduction unsaturated polyester die plastic that the inventive method obtains has the advantages that intensity is good, contraction is low, can effectively eliminate charge accumulation.Through test, flexural strength 85MPa, shock strength (non-notch) 32KJ/m
2
, shrinking percentage is less than 0.15%, vertical combustion (UL-94-V-0 3mm) V-0.
Embodiment
Embodiment 1:
47 parts of the metaphenylene unsaturated polyester resins that will take by weighing by weight first, solid content is rapid stirring 5-10min in 25 parts of 39 ~ 40% polymethylmethacrylate type low shrinkage additives and 0.9 part of input hollander of Phthalic acid, diallyl ester monomer, then drop into 0.6 part of the benzoyl peroxide diisopropylbenzene(DIPB) take by weighing by weight, 0.006 part of para benzoquinone, 0.12 part in calcium oxide, median size is 1 part of the conductive carbon black of 50um, continue to stir 15-30min, then change over to and mediate 4-8min in the kneader, then drop into again 150 parts of the stone flours that take by weighing by weight in the kneader, 9 parts in octabromodiphenyl ether, 2.3 parts of 3 parts of ammonium polyphosphates and lithium stearates, then mediate 20-30min, add at last the length take by weighing by weight and be 35 parts of the alkali free glass fibres of 3 ㎜, and and then mediate 5-10min, obtain fire-retardant conduction unsaturated polyester die plastic.
Embodiment 2:
46 parts of the metaphenylene unsaturated polyester resins that will take by weighing by weight first, solid content is rapid stirring 5-10min in 27 parts of 39 ~ 40% polymethylmethacrylate type low shrinkage additives and 1.2 parts of input hollanders of Phthalic acid, diallyl ester monomer, then drop into 0.51 part of the benzoyl peroxide diisopropylbenzene(DIPB) take by weighing by weight, 0.0065 part of para benzoquinone, 0.11 part in calcium oxide, median size is 1.8 parts of the conductive carbon blacks of 50um, continue to stir 15-30min, then change over to and mediate 4-8min in the kneader, then drop into again 125 parts of the stone flours that take by weighing by weight in the kneader, 7 parts of C 14 H 4 Br 8s, 2.9 parts of 2 parts of ammonium polyphosphates and lithium stearates, then mediate 20-30min, add at last the length take by weighing by weight and be 32 parts of the alkali free glass fibres of 3 ㎜, and and then mediate 5-10min, obtain fire-retardant conduction unsaturated polyester die plastic.
Embodiment 3:
45 parts of the metaphenylene unsaturated polyester resins that will take by weighing by weight first, solid content is rapid stirring 5-10min in 28 parts of 39 ~ 40% polymethylmethacrylate type low shrinkage additives and 0.6 part of input hollander of Phthalic acid, diallyl ester monomer, then drop into 0.65 part of the benzoyl peroxide diisopropylbenzene(DIPB) take by weighing by weight, 0.007 part of para benzoquinone, 0.14 part in calcium oxide, median size is 2 parts of the conductive carbon blacks of 50um, continue to stir 15-30min, then change over to and mediate 4-8min in the kneader, then drop into again 145 parts of the stone flours that take by weighing by weight in the kneader, 6 parts in octabromodiphenyl ether, 2.7 parts of 4 parts of ammonium polyphosphates and lithium stearates, then mediate 20-30min, add at last the length take by weighing by weight and be 37 parts of the alkali free glass fibres of 3 ㎜, and and then mediate 5-10min, obtain fire-retardant conduction unsaturated polyester die plastic.
Embodiment 4:
46.5 parts of the metaphenylene unsaturated polyester resins that will take by weighing by weight first, solid content is rapid stirring 5-10min in 29 parts of 39 ~ 40% polymethylmethacrylate type low shrinkage additives and 1 part of input hollander of Phthalic acid, diallyl ester monomer, then drop into 0.78 part of the benzoyl peroxide diisopropylbenzene(DIPB) take by weighing by weight, 0.0068 part of para benzoquinone, 0.13 part in calcium oxide, median size is 1.4 parts of the conductive carbon blacks of 50um, continue to stir 15-30min, then change over to and mediate 4-8min in the kneader, then drop into again 170 parts of the stone flours that take by weighing by weight in the kneader, 5 parts in octabromodiphenyl ether, 2.5 parts of 3.5 parts of ammonium polyphosphates and lithium stearates, then mediate 20-30min, add at last the length take by weighing by weight and be 34 parts of the alkali free glass fibres of 3 ㎜, and and then mediate 5-10min, obtain fire-retardant conduction unsaturated polyester die plastic.
The technical indicator that is had after tested the excellence shown in the following table by the resulting fire-retardant conduction unsaturated polyester die plastic of above-described embodiment 1-4:
Claims (10)
1.
A kind of preparation method of fire-retardant conduction unsaturated polyester die plastic, it is characterized in that it is 45 ~ 47 parts of the unsaturated polyester resins that will take by weighing by weight first, rapid stirring 5-10min in 25 ~ 29 parts of low shrinkage additives and 0.6 ~ 1.2 part of input hollander of undersaturated olefinic monomer, then drop into 0.51 ~ 0.78 part of the initiator take by weighing by weight, 0.006 ~ 0.007 part of stopper, 1～2 part of 0.11 ~ 0.14 part of metal oxide and conductive carbon black, continue to stir 15-30min, then change over to and mediate 4-8min in the kneader, then add again 125 ~ 170 parts of the fillers that take by weighing by weight in the kneader, 5 ~ 9 parts of fire retardants, 2.3 ~ 2.9 parts of 2 ~ 4 parts of metal phosphates and releasing agents, then mediate 20-30min, 32 ~ 37 parts of the fortifying fibres that at last adding takes by weighing by weight, and and then mediate 5-10min, obtain fire-retardant conduction unsaturated polyester die plastic.
2.
The preparation method of fire-retardant conduction unsaturated polyester die plastic according to claim 1, it is characterized in that described unsaturated polyester resin is metaphenylene unsaturated polyester resin, described low shrinkage additive is polymethylmethacrylate type low shrinkage additive, and the solid content of this low shrinkage additive is 39 ~ 40%.
3.
The preparation method of fire-retardant conduction unsaturated polyester die plastic according to claim 1 is characterized in that described ethylenic unsaturation hydrocarbon monomer is the Phthalic acid, diallyl ester monomer.
4.
The preparation method of fire-retardant conduction unsaturated polyester die plastic according to claim 1 is characterized in that described initiator is the benzoyl peroxide diisopropylbenzene(DIPB), and described stopper is para benzoquinone.
5.
The preparation method of fire-retardant conduction unsaturated polyester die plastic according to claim 1 is characterized in that described metal oxide is calcium oxide, and described filler is stone flour.
6.
The preparation method of fire-retardant conduction unsaturated polyester die plastic according to claim 1 is characterized in that described fire retardant is octabromodiphenyl ether or C 14 H 4 Br 8.
7.
The preparation method of fire-retardant conduction unsaturated polyester die plastic according to claim 1 is characterized in that described metal phosphate is ammonium polyphosphate.
8.
The preparation method of fire-retardant conduction unsaturated polyester die plastic according to claim 1 is characterized in that described releasing agent is lithium stearate.
9.
The preparation method of fire-retardant conduction unsaturated polyester die plastic according to claim 1 is characterized in that described fortifying fibre is that length is the alkali free glass fibre of 3 mm.
10.
The preparation method of fire-retardant conduction unsaturated polyester die plastic according to claim 1, the median size that it is characterized in that described conductive carbon black is 50um
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012103002917A CN102977283A (en) | 2012-08-22 | 2012-08-22 | Fire retardation and electric conduction unsaturated polyester molding compound preparation method |
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| CN2012103002917A CN102977283A (en) | 2012-08-22 | 2012-08-22 | Fire retardation and electric conduction unsaturated polyester molding compound preparation method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5641250A (en) * | 1979-09-10 | 1981-04-17 | Hitachi Chem Co Ltd | Flame-retarded low-shrinkage resin composition |
| CN1944530A (en) * | 2006-09-30 | 2007-04-11 | 李刚 | Low shrinking unsaturated polyester resin glass fibre reinforced mould plastic and its use |
| 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 |
| CN101514254A (en) * | 2009-03-09 | 2009-08-26 | 北京中铁长龙新型复合材料有限公司 | Sheet molding compound with high flame resistance, low smoke and non-toxic and preparation method thereof |
-
2012
- 2012-08-22 CN CN2012103002917A patent/CN102977283A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5641250A (en) * | 1979-09-10 | 1981-04-17 | Hitachi Chem Co Ltd | Flame-retarded low-shrinkage resin composition |
| CN1944530A (en) * | 2006-09-30 | 2007-04-11 | 李刚 | Low shrinking unsaturated polyester resin glass fibre reinforced mould plastic and its use |
| 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 |
| CN101514254A (en) * | 2009-03-09 | 2009-08-26 | 北京中铁长龙新型复合材料有限公司 | Sheet molding compound with high flame resistance, low smoke and non-toxic and preparation method thereof |
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Application publication date: 20130320 |