CN103525016A - Special PBT (polybutylene terephthalate) flame-retardant master batch and preparation method thereof - Google Patents
Special PBT (polybutylene terephthalate) flame-retardant master batch and preparation method thereof Download PDFInfo
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- CN103525016A CN103525016A CN201210221895.2A CN201210221895A CN103525016A CN 103525016 A CN103525016 A CN 103525016A CN 201210221895 A CN201210221895 A CN 201210221895A CN 103525016 A CN103525016 A CN 103525016A
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- flame
- pbt
- retardant
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- mother granule
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a special PBT (polybutylene terephthalate) flame-retardant master batch and a preparation method thereof. The special PBT flame-retardant master batch comprises the following components in percentage by mass: 20-60% of PBT resin, 25-55% of flame retardant, 3-15% of flame-retardant assistant, 5-10% of lubricating dispersant, 0.2-0.6% of antioxidant and 0.2-1.5% of coupling agent. The preparation method comprises the following steps: proportionally preparing the components, uniformly mixing in a high-speed mixer, and extruding and granulating in a double screw extruder. The poly-2,6-dibromo-phenylene ether used as the flame retardant is matched with antimony trioxide used as the flame-retardant assistant, and subjected to surface modification with the coupling agent to better improve and ensure the compatibility between the master batch and the PBT resin, thereby enhancing the flame-retardant efficiency, improving the PBT mechanical properties, greatly reducing the dust and improving the production operation environment of the PBT resin. The flame-retardant master batch has the advantages of simple manufacturing process and high efficiency.
Description
Technical field
The present invention relates to a kind of PBT master batch, specifically a kind of PBT special-purpose flame-proof mother granule and preparation method thereof.
Background technology
Polybutylene terephthalate (PBT) is a kind of crystalline thermoplastic polyester's resin, it not only has good physical and mechanical properties, as high in physical strength, resistance to fatigue and good stability of the dimension, creep is little, ageing-resistant performance is excellent, and its electric property is also very excellent, as its volume specific resistance with dielectric strength is high, arc resistance can be good, electric performance stablity under moist hot environment, so be the ideal material of manufacturing electronics, electric parts, and general electronics, electric parts all have fire-retardant requirement in various degree.At present, each based flame retardants that adopt powdery in PBT material more, because the impact of the factors such as state of the art, appointed condition or technological process control, the problem such as while using powdery combustion inhibitor, have dispersed bad, poor with the consistency of matrix resin, dust pollution, flame retardant effect is general and technique is loaded down with trivial details.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, the invention provides a kind of high density, high flame retardant, easily disperse and the PBT special-purpose flame-proof mother granule of excellent heat stability and preparation method thereof.
The technical solution adopted for the present invention to solve the technical problems is: PBT special-purpose flame-proof mother granule, its component by mass percent proportioning is: PBT resin 20%～60%, fire retardant 25%～55%, flame retardant 3%～15%, lubrication dispersing agent 5%～10%, oxidation inhibitor 0.2%～0.6%, coupling agent 0.2%～1.5%.
Described fire retardant, for poly-2,6-dibromo phenylene ether, is by 2,4, and 6-tribromophenol carries out polycondensation and makes under initiator effect, its theoretical bromine content 64%, 210 ℃-240 ℃ of softening temperatures, relative density 2.07.
Described flame retardant is antimonous oxide.
Described lubrication dispersing agent is one or more of EVA wax, Poly Propylene Wax, AClyn lower molecular weight ionomer, EBS.
Described oxidation inhibitor is the compound of hindered phenol antioxygen KY-1076 and phosphite antioxidant JC-242.
Described coupling agent is silane coupling agent or titanate coupling agent.
The preparation method of above-mentioned a kind of PBT special-purpose flame-proof mother granule is: above-mentioned each component is prepared burden in proportion; then even in high-speed mixer for dry mixing; be placed in again that twin screw extruder is extruded, granulation; its technique is: regulating twin screw extruder rotating speed is 200～400rpm; melt extrude temperature within the scope of 150 ℃～250 ℃; under the conveying and shearing action of twin screw extruder; fully fusion plastification, mediate mixing; water ring pelletizing or cold drawn bar pelletizing after head is extruded, dry rear packing obtains PBT special-purpose flame-proof mother granule.
The invention has the beneficial effects as follows, adopting poly-2,6-dibromo phenylene ether is fire retardant, and cooperation antimonous oxide is flame retardant, pass through again coupling agent surface modification treatment, the consistency that makes to improve better and guaranteed master batch and PBT resin, not only improves flame retarding efficiency, again improve PBT mechanical property, but also greatly reduced dust, improved the production operation environment of PBT resin, manufactured simply, efficiency is high.
Embodiment
Below in conjunction with specific embodiment, further illustrate technical scheme of the present invention.
Embodiment 1:
A kind of PBT special-purpose flame-proof mother granule, its component by mass percent proportioning is: compound 0.4%, the silane coupling agent 0.6% of PBT resin 40%, poly-2,6-dibromo phenylene ether 40%, antimonous oxide 12%, EVA wax 7%, hindered phenol antioxygen KY-1076 and phosphite antioxidant JC-242.
Preparation method: above-mentioned each component is prepared burden in proportion; then even in high-speed mixer for dry mixing; be placed in again that twin screw extruder is extruded, granulation; its technique is: regulating twin screw extruder rotating speed is 200～400rpm; melt extrude temperature within the scope of 150 ℃～250 ℃, under the conveying and shearing action of twin screw extruder, fully fusion plastification, mediate mixing; water ring pelletizing or cold drawn bar pelletizing after head is extruded, dry rear packing obtains PBT special-purpose flame-proof mother granule.
Embodiment 2:
A kind of PBT special-purpose flame-proof mother granule, its component by mass percent proportioning is: compound 0.5%, the titanate coupling agent 1.5% of PBT resin 20%, poly-2,6-dibromo phenylene ether 55%, antimonous oxide 13%, AClyn lower molecular weight ionomer 10%, hindered phenol antioxygen KY-1076 and phosphite antioxidant JC-242.
Preparation method: above-mentioned each component is prepared burden in proportion; then even in high-speed mixer for dry mixing; be placed in again that twin screw extruder is extruded, granulation; its technique is: regulating twin screw extruder rotating speed is 200～400rpm; melt extrude temperature within the scope of 150 ℃～250 ℃, under the conveying and shearing action of twin screw extruder, fully fusion plastification, mediate mixing; water ring pelletizing or cold drawn bar pelletizing after head is extruded, dry rear packing obtains PBT special-purpose flame-proof mother granule.
Embodiment 3:
A kind of PBT special-purpose flame-proof mother granule, its component by mass percent proportioning is: compound 0.2%, the silane coupling agent 0.3% of PBT resin 60%, poly-2,6-dibromo phenylene ether 25%, antimonous oxide 7%, EVA wax 7.5%, hindered phenol antioxygen KY-1076 and phosphite antioxidant JC-242.
Preparation method: above-mentioned each component is prepared burden in proportion; then even in high-speed mixer for dry mixing; be placed in again that twin screw extruder is extruded, granulation; its technique is: regulating twin screw extruder rotating speed is 200～400rpm; melt extrude temperature within the scope of 150 ℃～250 ℃, under the conveying and shearing action of twin screw extruder, fully fusion plastification, mediate mixing; water ring pelletizing or cold drawn bar pelletizing after head is extruded, dry rear packing obtains PBT special-purpose flame-proof mother granule.
Claims (8)
1. a PBT special-purpose flame-proof mother granule, it is characterized in that, its component by mass percent proportioning is: PBT resin 20%～60%, fire retardant 25%～55%, flame retardant 3%～15%, lubrication dispersing agent 5%～10%, oxidation inhibitor 0.2%～0.6%, coupling agent 0.2%～1.5%.
2. PBT special-purpose flame-proof mother granule according to claim 1, is characterized in that, described fire retardant is poly-2,6-dibromo phenylene ether.
3. PBT special-purpose flame-proof mother granule according to claim 1, is characterized in that, described flame retardant is antimonous oxide.
4. PBT special-purpose flame-proof mother granule according to claim 1, is characterized in that, described lubrication dispersing agent is one or more of EVA wax, Poly Propylene Wax, AClyn lower molecular weight ionomer, EBS.
5. PBT special-purpose flame-proof mother granule according to claim 1, is characterized in that, described oxidation inhibitor is the compound of hindered phenol antioxygen KY-1076 and phosphite antioxidant JC-242.
6. PBT special-purpose flame-proof mother granule according to claim 1, is characterized in that, described coupling agent is silane coupling agent or titanate coupling agent.
7. the preparation method of PBT special-purpose flame-proof mother granule according to claim 1, it is characterized in that, comprise the following steps: according to each component described in claim 1～6, prepare burden in proportion, then even in high-speed mixer for dry mixing, then be placed in that twin screw extruder is extruded, granulation.
8. the preparation method of PBT special-purpose flame-proof mother granule according to claim 7, is characterized in that, regulating twin screw extruder rotating speed is 200～400rpm, melt extrudes temperature within the scope of 150 ℃～250 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210221895.2A CN103525016A (en) | 2012-07-02 | 2012-07-02 | Special PBT (polybutylene terephthalate) flame-retardant master batch and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210221895.2A CN103525016A (en) | 2012-07-02 | 2012-07-02 | Special PBT (polybutylene terephthalate) flame-retardant master batch and preparation method thereof |
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| Publication Number | Publication Date |
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| CN103525016A true CN103525016A (en) | 2014-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210221895.2A Pending CN103525016A (en) | 2012-07-02 | 2012-07-02 | Special PBT (polybutylene terephthalate) flame-retardant master batch and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105273373A (en) * | 2015-11-16 | 2016-01-27 | 中山市旺来实业有限公司 | PBT flame-resistant composite material and preparation method |
| CN109370175A (en) * | 2018-11-27 | 2019-02-22 | 江苏万纳普新材料科技有限公司 | A kind of PBT direct injection molding efficient enhanced halogen-free flameproof functional agglomerate and preparation method thereof |
| CN113773554A (en) * | 2021-10-22 | 2021-12-10 | 北京普利宏斌化工材料有限责任公司 | Efficient flame retardant and preparation method thereof |
-
2012
- 2012-07-02 CN CN201210221895.2A patent/CN103525016A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105273373A (en) * | 2015-11-16 | 2016-01-27 | 中山市旺来实业有限公司 | PBT flame-resistant composite material and preparation method |
| CN109370175A (en) * | 2018-11-27 | 2019-02-22 | 江苏万纳普新材料科技有限公司 | A kind of PBT direct injection molding efficient enhanced halogen-free flameproof functional agglomerate and preparation method thereof |
| CN109370175B (en) * | 2018-11-27 | 2021-03-23 | 江苏万纳普新材料科技有限公司 | Efficient enhanced halogen-free flame-retardant functional master batch for direct injection molding of PBT (polybutylene terephthalate) and preparation method thereof |
| CN113773554A (en) * | 2021-10-22 | 2021-12-10 | 北京普利宏斌化工材料有限责任公司 | Efficient flame retardant and preparation method thereof |
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Application publication date: 20140122 |