CN101638510A - Low volatile polyester molding compound and preparation method thereof - Google Patents
Low volatile polyester molding compound and preparation method thereof Download PDFInfo
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- CN101638510A CN101638510A CN200910169880A CN200910169880A CN101638510A CN 101638510 A CN101638510 A CN 101638510A CN 200910169880 A CN200910169880 A CN 200910169880A CN 200910169880 A CN200910169880 A CN 200910169880A CN 101638510 A CN101638510 A CN 101638510A
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Abstract
The invention relates to the field of composite insulating materials and discloses a low volatile polyester molding compound and a preparation method thereof. The low volatile polyester molding compound is mainly manufactured by directly selecting granular colorable polystyrene (PS) with the particle diameter of about 200 meshes on the aspect of low shrinkage additive, and adopting a direct addition technology without carrying out a working procedure of blending of the polystyrene and monomer styrene, therefore, the invention greatly lowers the content of the monomer styrene in materials and the content of volatile in the polyester molding compound, realizes the minimization of the content of the monomer styrene on the premise of ensuring that the polyester molding compound is completely reacted and solidified, keeps the prior excellent performance, and obviously reduces pollution to the environment.
Description
Technical field
The present invention relates to the composite insulating material field, more specifically, is a kind of low volatile polyester molding compound and preparation method thereof.
Background technology
Polyester molding compound is widely used among industrial and agricultural production and the daily life because of having numerous advantages such as favorable rigidity, flexibility, rebound resilience, erosion resistance and weathering resistance, but, as making one of requisite material of polyester molding compound---monomer styrene is a kind of chemical substance of danger, it not only has stimulation and anesthetic action to eye and upper respiratory tract mucosa, and long-term contact also can cause the generation of neurasthenia, lung's obstructive pulmonary disease even canceration; What is more important, monomer styrene is highly volatile in polyester molding compound, polluted air, soil and water body easily, very harmful for environment.This just makes people indulge in the harm of monomer styrene, and polyester molding compound fully dare not be used in productive life.
If can effectively reduce the content of monomer styrene in the polyester molding compound, then nature can reduce the content of fugitive constituent in the polyester molding compound, reduce pollution, arrive environmental protection requirement, thereby make people really use the polyester molding compound product in safety and environmental protection ground for environment.
Summary of the invention
The object of the invention is to provide a kind of low volatile polyester molding compound, wherein as the monomer styrene of material cross-linking reaction agent, under guaranteeing that polyester molding compound can complete reaction solidified prerequisite, realized minimumization of content, keep other premium properties of polyester molding compound constant simultaneously.Another object of the present invention is to provide the preparation method of this low volatile polyester molding compound.
Our company is by a large amount of tests checking repeatedly, finally determines when the content of monomer styrene in the material reaches 4%～6%, and material just can crosslinking curing; On this theoretical basis, reduce the content of monomer styrene in the material, use the direct adding technique of novel microgranular shrinking agent simultaneously, reduced the operation with the monomer styrene blend, finally make the content of monomer styrene in the polyester molding compound drop to 5% from 12%.
Concrete technical scheme of the present invention is as follows:
A kind of low volatile polyester molding compound is formed by the proportioning raw materials of following weight part:
Adjacent benzene type unsaturated polyester resin 60～70;
Microgranular low shrinkage additive 30～40;
Solidifying agent 1.0～2.5;
Stopper 0.2～0.4;
Process auxiliaries BYK-W-996 2～4;
Pigment 6～10;
Packing material 160～240;
Releasing agent 3～5;
Thickening material 0.5～1.0;
Alkali-free short glass fiber 50～80.
Wherein:
The solid content of described adjacent benzene type unsaturated polyester resin is 70% (all the other is styrene solution), and viscosity is 1800cps, and has good wetting property between packing material and other strongtheners, also has good electricity, mechanical property.
Described microgranular low shrinkage additive is that particle diameter is the particulate state pigmentable polystyrene (PS) about 200 orders, and this low shrinkage additive has excellent contraction control performance, tint permanence and oilness.
Described solidifying agent is a purity more than 98%, and 10 hours half life temperatures are 104 ℃ peroxidized t-butyl perbenzoate.
Described stopper is the mixture of Resorcinol and para benzoquinone, and preferably the two can be controlled curing characteristic, reduce generation of defects according to 1: 3 mixed, has the storage period that prolongs moulding compound, the effect that improves stability.
Described process auxiliaries BYK-W-996 is produced by German BYK company, is a kind of copolymer solution that contains acidic-group, thereby can improves liquidity the stable mode plastics, also can improve release property, is the special process auxiliary agent with viscosity reduction immersional wetting.
Described pigment is to mix the mill base of milling and forming by versicolor toner and monomer-free unsaturated polyester resin S10, and preferably wherein toner accounts for 10% weight part, monomer-free unsaturated polyester resin S10 accounts for 90% weight part.
Described packing material is hydrated aluminum oxide powder or calcium carbonate powders, hydrated aluminum oxide powder or the calcium carbonate powders of preferable particle size 7～9um.
Described releasing agent is the Zinic stearas powder, and preferable particle size is 190 orders～210 purpose Zinic stearas powder.
Described thickening material is that purity is the calcium hydroxide powder more than 95%, and preferable particle size is the calcium hydroxide powder of 7～10um.
Preferred 6mm of the length of described alkali-free short glass fiber and 12mm.
The preparation method of above-mentioned low volatile polyester molding compound comprises the steps:
(1) adjacent benzene type unsaturated polyester resin, microgranular low shrinkage additive are added in the premixing device, high shear rates (800～1000r/min) and temperature be to stir 5 fens kinds under 60 ℃～70 ℃ the condition, compounding substances A;
(2) compounding substances A, solidifying agent, stopper, process auxiliaries BYK-W-996, pigment are all added in the kneader, stir, control whipping temp at 20～45 ℃, about 2 minutes;
(3) in kneader, add packing material, releasing agent, stir, about 10 minutes;
(4) in kneader, add thickening material, stir, about 5 minutes;
(5) add the alkali-free short glass fiber in kneader, stirring makes it to be uniformly dispersed, and material promptly completes about 8 minutes.
Low volatile polyester molding compound of the present invention, directly having selected particle diameter aspect the low shrinkage additive for use is particulate state pigmentable polystyrene (PS) about 200 orders, and adopt direct adding technique, and the operation of not carrying out polystyrene and monomer styrene blend, thereby greatly reduced the content of monomer styrene in the material, reduced the content of fugitive constituent in the polyester molding compound, the pollution of environment significantly alleviates.
Low volatile polyester molding compound according to above-mentioned prescription and method preparation, after measured, monomer styrene content wherein drops to 4%～6% from 12% of existing conventional polyester moulding compound, and the surperficial Ba Erke hardness that characterizes the reaction state of cure has reached 55～60, promptly, realized minimumization of monomer styrene content guaranteeing the curing of polyester molding compound complete reaction and keeping under the prerequisite of original premium properties.It is as shown in the table to record its concrete technical indicator in the practice:
| Test event | Unit | Test method(s) | Technical indicator |
| Molding proportion | ??g/cm 3 | ??ISO?1183-2004(E) | ??1.75～1.95 |
| Shaping shrinkage rate | ??％ | ??ISO?2577-1984(E) | ??＜0.15 |
| Heat-drawn wire | ??℃ | ??ISO?75-1987(E) | ??＞200 |
| Flexural strength | ??MPa | ??ISO?178-2001(E) | ??＞120 |
| Shock strength (but shellfish) | ??KJ/m2 | ??ISO?179-2000(E) | ??＞30 |
| Insulation opposing (normality) | ??Ω | ??GB10064 | ??＞10 13 |
| Insulation opposing (boiling) | ??Ω | ??GB10064 | ??＞10 11 |
| Proof voltage | ??KV/mm | ??IEC60243-1：1998 | ??＞12 |
| Arc resistance | ??Sec | ??GB/T1411-2002 | ??＞180 |
| Anti-electric leakage | ??CTI | ??GB/T4207-2003 | ??＞600 |
| Shaping shrinkage rate | ??％ | ??ISO?2577-1984(E) | ??＜0.15 |
Embodiment
Below describe several preferred implementation of the present invention, but be not in order to limit the present invention.
Embodiment 1:
According to following weight part proportioning raw material:
60 parts of solid contents are 70% adjacent benzene type unsaturated polyester resin, 40 parts of particulate state low shrinkage additives, 1.0 parts of 10 hours half life temperatures are 104 ℃ peroxidized t-butyl perbenzoate (purity 98%), 0.1 part stopper, 2 parts of BYK-W-996,6 parts of % pigment, the hydrated aluminum oxide powder of 180 parts of particle diameter 7～9um, 3 parts of particle diameters are 190 purpose Zinic stearas powder, 0.5 a part particle diameter is the calcium hydroxide powder (purity 95%) of 7～10um, 80 parts of alkali-free short glass fibers that length is 6mm, stand-by;
Wherein:
The particulate state low shrinkage additive is the pigmentable granules of polystyrene shape low shrinkage additive about particle diameter 200 orders;
Stopper is Resorcinol and the para benzoquinone mixture according to 1: 3 mixed;
Pigment is to mix the mill base of milling and forming by versicolor toner and monomer-free unsaturated polyester resin S10 according to 1: 9 weight ratio;
Prepare low volatile polyester molding compound according to following steps:
(1) adjacent benzene type unsaturated polyester resin, microgranular low shrinkage additive are added in the premixing device, under the temperature condition of the velocity of shear of 800r/min and 60 ℃, stir 5 fens kinds, compounding substances A;
(2) compounding substances A, peroxidized t-butyl perbenzoate, stopper, BYK-W-996, pigment are all added in the kneader, stir, control whipping temp at 20 ℃, about 2 minutes;
(3) in kneader, add hydrated aluminum oxide powder, Zinic stearas powder, stir about 10 minutes;
(4) in kneader, add the calcium hydroxide powder, stir about 5 minutes;
(5) add the alkali-free short glass fiber in kneader, stirring makes it to be uniformly dispersed, and material promptly completes about 8 minutes.
Embodiment 2:
According to following weight part proportioning raw material:
70 parts of solid contents are 70% adjacent benzene type unsaturated polyester resin, 30 parts of particulate state low shrinkage additives, 2.5 parts of 10 hours half life temperatures are 104 ℃ peroxidized t-butyl perbenzoate (purity 98%), 0.3 part stopper, 4 parts of BYK-W-996,10 parts of % pigment, the hydrated aluminum oxide powder of 240 parts of particle diameter 7～9 um, 5 parts of particle diameters are 190 purpose Zinic stearas powder, 1.0 a part particle diameter is the calcium hydroxide powder (purity 95%) of 7～10um, 60 parts of alkali-free short glass fibers that length is 6mm, stand-by;
Wherein:
The particulate state low shrinkage additive is the pigmentable granules of polystyrene shape low shrinkage additive about particle diameter 200 orders;
Stopper is Resorcinol and the para benzoquinone mixture according to 1: 3.5 mixed;
Pigment is to mix the mill base of milling and forming by versicolor toner and monomer-free unsaturated polyester resin S10 according to 1: 8.5 weight ratio;
Prepare low volatile polyester molding compound according to following steps:
(1) adjacent benzene type unsaturated polyester resin, microgranular low shrinkage additive are added in the premixing device, under the temperature condition of the velocity of shear of 1000r/min and 70 ℃, stir 5 fens kinds, compounding substances A;
(2) compounding substances A, peroxidized t-butyl perbenzoate, stopper, BYK-W-996, pigment are all added in the kneader, stir, control whipping temp at 45 ℃, about 2 minutes;
(3) in kneader, add hydrated aluminum oxide powder, Zinic stearas powder, stir about 10 minutes;
(4) in kneader, add the calcium hydroxide powder, stir about 5 minutes;
(5) add the alkali-free short glass fiber in kneader, stirring makes it to be uniformly dispersed, and material promptly completes about 8 minutes.
Claims (8)
1. low volatile polyester molding compound is characterized in that being made up of the raw material of following weight part:
Adjacent benzene type unsaturated polyester resin 60～70;
Microgranular low shrinkage additive 30～40;
Solidifying agent 1.0～2.5;
Stopper 0.2～0.4;
Process auxiliaries BYK-W-996 2～4;
Pigment 6～10;
Packing material 160～240;
Releasing agent 3～5;
Thickening material 0.5～1.0;
Alkali-free short glass fiber 50～80.
Wherein:
The solid content of described adjacent benzene type unsaturated polyester resin is 70% (all the other is styrene solution);
Described microgranular low shrinkage additive is that particle diameter is the particulate state pigmentable polystyrene (PS) about 200 orders;
Described solidifying agent is a purity more than 98%, and 10 hours half life temperatures are 104 ℃ peroxidized t-butyl perbenzoate.
Described stopper is the mixture of Resorcinol and para benzoquinone;
Described pigment is to mix the mill base of milling and forming by versicolor toner and monomer-free unsaturated polyester resin S10;
Described packing material is hydrated aluminum oxide powder or calcium carbonate powders;
Described releasing agent is the Zinic stearas powder;
Described thickening material is that purity is the calcium hydroxide powder more than 95%;
Preferred 6mm of the length of described alkali-free short glass fiber and 12mm.
2. low volatile polyester molding compound according to claim 1 is characterized in that described stopper is the mixture that is formed according to 1: 3 mixed by Resorcinol and para benzoquinone.
3. low volatile polyester molding compound according to claim 1 is characterized in that versicolor toner accounts for 10% weight part in the described pigment, monomer-free unsaturated polyester resin S10 accounts for 90% weight part.
4. low volatile polyester molding compound according to claim 1 is characterized in that versicolor toner accounts for 10% weight part in the described liquid paint, monomer-free unsaturated polyester resin S10 accounts for 90% weight part.
5. low volatile polyester molding compound according to claim 1 is characterized in that described packing material is hydrated aluminum oxide or the calcium carbonate powders of particle diameter 7～9um.
6. low volatile polyester molding compound according to claim 1 is characterized in that described releasing agent is particle diameter 190 orders～210 purpose Zinic stearas powder.
7. low volatile polyester molding compound according to claim 1, the particle diameter that it is characterized in that described calcium hydroxide powder is 7～10um.
8. a method for preparing the described low volatile polyester molding compound of claim 1 is characterized in that comprising the steps:
(1) adjacent benzene type unsaturated polyester resin, microgranular low shrinkage additive are added in the premixing device, high shear rates (800～1000r/min) and temperature be to stir 5 fens kinds under 60 ℃～70 ℃ the condition, compounding substances A;
(2) compounding substances A, solidifying agent, stopper, process auxiliaries BYK-W-996, pigment are all added in the kneader, stir, control whipping temp at 20～45 ℃, about 2 minutes;
(3) in kneader, add packing material, releasing agent, stir, about 10 minutes;
(4) in kneader, add thickening material, stir, about 5 minutes;
(5) add the alkali-free short glass fiber in kneader, stirring makes it to be uniformly dispersed, and material promptly completes about 8 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2009101698804A CN101638510B (en) | 2009-09-08 | 2009-09-08 | Low volatile polyester molding plastic and preparation method thereof |
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| CN2009101698804A CN101638510B (en) | 2009-09-08 | 2009-09-08 | Low volatile polyester molding plastic and preparation method thereof |
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| CN101638510A true CN101638510A (en) | 2010-02-03 |
| CN101638510B CN101638510B (en) | 2011-11-30 |
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Cited By (8)
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| CN101845119A (en) * | 2010-05-25 | 2010-09-29 | 宁波华缘玻璃钢电器制造有限公司 | Polyester molding compound with imitative agate decorative patterns and preparation method thereof |
| CN101871219A (en) * | 2010-05-27 | 2010-10-27 | 北京泛亚电通工贸有限责任公司 | High-strength polyester composite well cover as well as formula and preparation method thereof |
| CN102757630A (en) * | 2012-07-30 | 2012-10-31 | 无锡新宏泰电器科技股份有限公司 | Low temperature and low pressure BMC (Bulk Molding Compound) material, preparation method thereof and purpose thereof |
| CN102863751A (en) * | 2012-09-18 | 2013-01-09 | 宁波华缘复合新材料有限公司 | Polyester molding compound and preparation method thereof |
| CN102977285A (en) * | 2012-11-09 | 2013-03-20 | 长兴绿地建材有限公司 | High-molecular high-strength composite material special-purposed leak board for pasture |
| CN103724959A (en) * | 2014-01-08 | 2014-04-16 | 无锡新宏泰电器科技股份有限公司 | BMC (Bulk Moulding Compound) material with weather resistance and preparation method of BMC material |
| CN108440931A (en) * | 2018-03-14 | 2018-08-24 | 合肥远科服装设计有限公司 | A kind of polyester material for fasteners for clothing manufacture |
| CN110903622A (en) * | 2019-11-05 | 2020-03-24 | 珠海格力绿色再生资源有限公司 | BMC composite material for air conditioner electrical appliance box and preparation method thereof |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101845119A (en) * | 2010-05-25 | 2010-09-29 | 宁波华缘玻璃钢电器制造有限公司 | Polyester molding compound with imitative agate decorative patterns and preparation method thereof |
| CN101845119B (en) * | 2010-05-25 | 2011-10-19 | 宁波华缘玻璃钢电器制造有限公司 | Polyester molding compound with imitative agate decorative patterns and preparation method thereof |
| CN101871219A (en) * | 2010-05-27 | 2010-10-27 | 北京泛亚电通工贸有限责任公司 | High-strength polyester composite well cover as well as formula and preparation method thereof |
| CN101871219B (en) * | 2010-05-27 | 2011-08-31 | 北京泛亚电通工贸有限责任公司 | High-strength polyester composite well cover and preparation method thereof |
| CN102757630A (en) * | 2012-07-30 | 2012-10-31 | 无锡新宏泰电器科技股份有限公司 | Low temperature and low pressure BMC (Bulk Molding Compound) material, preparation method thereof and purpose thereof |
| CN102757630B (en) * | 2012-07-30 | 2015-12-02 | 无锡新宏泰电器科技股份有限公司 | A kind of low-temp low-pressure BMC, preparation method and its usage |
| CN102863751A (en) * | 2012-09-18 | 2013-01-09 | 宁波华缘复合新材料有限公司 | Polyester molding compound and preparation method thereof |
| CN102977285A (en) * | 2012-11-09 | 2013-03-20 | 长兴绿地建材有限公司 | High-molecular high-strength composite material special-purposed leak board for pasture |
| CN103724959A (en) * | 2014-01-08 | 2014-04-16 | 无锡新宏泰电器科技股份有限公司 | BMC (Bulk Moulding Compound) material with weather resistance and preparation method of BMC material |
| CN108440931A (en) * | 2018-03-14 | 2018-08-24 | 合肥远科服装设计有限公司 | A kind of polyester material for fasteners for clothing manufacture |
| CN110903622A (en) * | 2019-11-05 | 2020-03-24 | 珠海格力绿色再生资源有限公司 | BMC composite material for air conditioner electrical appliance box and preparation method thereof |
| CN110903622B (en) * | 2019-11-05 | 2022-03-08 | 珠海格力绿色再生资源有限公司 | BMC composite material for air conditioner electrical appliance box and preparation method thereof |
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| CN101638510B (en) | 2011-11-30 |
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