CN102775680A - Halogen-free flame-retardant polypropylene composition with high glowing wires and high CTI (comparative tracking index) and preparation method thereof - Google Patents
Halogen-free flame-retardant polypropylene composition with high glowing wires and high CTI (comparative tracking index) and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a halogen-free flame-retardant polypropylene composition with high glowing wires and a high CTI (comparative tracking index) and a preparation method of the halogen-free flame-retardant polypropylene composition. The composition comprises the following components by weight: 45-75% of polypropylene, 1-15% of compatilizer, 5-25% of main flame retardant, 1-15% of synergistic flame retardant, 0.1-0.5% of anti-oxygen agent and 0.1-0.5% of lubricating agent. The preparation method comprises the steps of: weighing the raw materials according to the weight ratio, blending and discharging the materials, and putting the uniformly mixed materials into a double-screw extruder to extrude and pelletize. The halogen-free flame-retardant polypropylene composition with the high glowing wires and the high CTI, prepared by the invention, has excellent flame-retardant property, achieves UL (Underwriter Laboratories Inc.) 94 flame retardant V0(1.6mm) level, passes through the tests in GWIT (Glow Wire Ignition Temperature), GWFI (Glow Wire Flammability Index) glowing wires, CIT and the like, meets the flame-retardant property required by the product, has good mechanical property, excellent CTI performance and high glowing wire temperature, and has safe and environment-friendly characteristics.
Description
Technical field
The present invention relates to flame-retardant polypropylene composite material and preparation method thereof, relate in particular to a kind of high glow-wire, high CTI halogen-free flame-retardant polypropylene composition and preparation method thereof.
Background technology
Polypropylene material is widely used in various fields because of its excellent mechanical property and cost performance.And the frontier that polypropylene product is used has been expanded in the development of anti-flaming polypropylene material, makes matrix material have good mechanical performance and excellent flame, has very wide application prospect in fields such as electronics, household electrical appliances, motors.Along with the development of society and people improve constantly what material behavior required, the requirement of economy, safety and environmental protection more and more obtains paying attention to.
At present; A variety of halogen-free flame retardant polypropylene composite materials have appearred both at home and abroad; Range of application enlarges gradually; And the trend that substitutes corresponding Halogen flame-retardant system material is arranged gradually, but the halogen-free flame retardant polypropylene composite material with high glow-wire, high CTI is external imported product mostly, and price is more expensive relatively.At present many is flame-retardant system satisfying the flame retardant resistance of matrix material with halogen, but high glow-wire, high CTI require to be difficult to obtain, and price is higher relatively, and does not meet environmental requirement; Simultaneously general halogen-free flame retardants is prone to suction separates out with fire retardant high temperature, and dispersiveness is bad, has a strong impact on the processing of matrix material and goods are apparent and the use range of product.
Summary of the invention
The objective of the invention is to overcome the defective that above-mentioned prior art exists, a kind of high glow-wire, high CTI halogen-free flame retardant polypropylene composite material and preparation method thereof are provided.
The objective of the invention is to realize through following technical scheme:
The present invention relates to a kind of high glow-wire, high CTI halogen-free flame-retardant polypropylene composition, comprise each component of following weight percent content:
Preferably, said Vestolen PP 7052 is a COPP.
Preferably, the percent crystallinity of said COPP is 50%～60%, and melting index is 20g/10min.
Preferably, said compatilizer is a maleic anhydride inoculated polypropylene (Vestolen PP 7052-g-MAH).
Preferably, said main flame retardant is a nitrogen phosphorus series non-halogen fire retardant, and water-absorbent is less.
Preferably, said synergistic flame retardant is the polyalcohols fire retardant.
Preferably, said oxidation inhibitor is Hinered phenols antioxidant and the composite mixture of phosphite ester kind antioxidant.
Preferably, said oxidation inhibitor is the composite mixture of antioxidant 1010 and oxidation inhibitor 168.
Preferably, said lubricant is the fatty acid lubricant.
The invention still further relates to the preparation method of a kind of aforesaid high glow-wire, high CTI halogen-free flame-retardant polypropylene composition, comprise the steps:
Step 1, take by weighing said Vestolen PP 7052, compatilizer, main flame retardant, synergistic flame retardant, oxidation inhibitor, lubricant by weight ratio; Put into high-speed mixer and mixing 2～5 minutes, discharging;
Step 2, the raw material of handling well in the step 1 is put into the twin screw extruder extruding pelletization, the rotating speed of said twin screw extruder is 180～400 rev/mins, and temperature is 190～220 ℃.
Compared with prior art, the present invention has following beneficial effect:
The material of method preparation is difficult to satisfy high defectives such as requirement to glowing filament, CTI well to be improved; Main flame retardant and synergistic flame retardant join use mutually, effectively raise the glow wire temperature, the CTI voltage range that meet material; Polypropylene grafted maleic anhydride (Vestolen PP 7052-g-MAH) the adding of compatilizer; Improved the consistency of matrix material, also effectively suppressed the problem of separating out of fire retardant to a certain extent, mechanical property has also significantly been optimized; Can make the flame retardant resistance height; And require high glow-wire, high CTI excellence, particularly product to be in high temperature, the high pressure environmental protection flame retardant goods of use down, can be widely used in various fields such as electronics, household electrical appliances, motor.
Embodiment
Below in conjunction with specific embodiment the present invention is elaborated.Following examples will help those skilled in the art further to understand the present invention, but not limit the present invention in any form.Should be pointed out that to those skilled in the art, under the prerequisite that does not break away from the present invention's design, can also make some distortion and improvement.These all belong to protection scope of the present invention.
The Vestolen PP 7052 that adopts in following examples and the Comparative Examples is that percent crystallinity is 50%～60%, melting index is the COPP of 20g/10min; The compatilizer that adopts is a maleic anhydride inoculated polypropylene; The main flame retardant that adopts is the less nitrogen phosphorus series non-halogen fire retardant of water-absorbent; The synergistic flame retardant that adopts is the polyalcohols fire retardant; The oxidation inhibitor that adopts is Hinered phenols antioxidant and the composite mixture of phosphite ester kind antioxidant, specifically is the composite mixture of antioxidant 1010 and oxidation inhibitor 168; The lubricant that adopts is the fatty acid lubricant.
Comparative Examples 1
The flame-proof polypropelene composition of this Comparative Examples comprises each component of weight percent content as shown in table 1; Its preparation method is specific as follows:
Step 1, take by weighing raw material by the weight proportion shown in the table 1; Put into high-speed mixer and mixing 5 minutes, discharging;
Step 2, the raw material that will mix are put into the twin screw extruder extruding pelletization, promptly get said flame-proof polypropelene composition; The rotating speed of said screw rod machine is 400 rev/mins, and temperature is 220 ℃.
Embodiment 1
The high glow-wire of present embodiment, high CTI halogen-free flame-retardant polypropylene composition comprise each component of weight percent content as shown in table 1.Its preparation method is specific as follows:
Step 1, take by weighing raw material by the weight proportion shown in the table 1; Put into high-speed mixer and mixing 5 minutes, discharging;
Step 2, the raw material that will mix are put into the twin screw extruder extruding pelletization, promptly get said flame-proof polypropelene composition; The rotating speed of said twin screw extruder is 400 rev/mins, and temperature is 220 ℃.
Embodiment 2
The high glow-wire of present embodiment, high CTI halogen-free flame-retardant polypropylene composition comprise each component of weight percent content as shown in table 1.
Present embodiment preparation of compositions method is with embodiment 1, and institute's difference is:
In the step 1, mixing time is 2 minutes;
In the step 2, the rotating speed of twin screw extruder is 180 rev/mins, and temperature is 190 ℃.
Embodiment 3
The high glow-wire of present embodiment, high CTI halogen-free flame-retardant polypropylene composition comprise each component of weight percent content as shown in table 1.
Present embodiment preparation of compositions method is with embodiment 1, and institute's difference is:
In the step 1, mixing time is 3 minutes;
In the step 2, the rotating speed of twin screw extruder is 260 rev/mins, and temperature is 200 ℃.
Embodiment 4
The high glow-wire of present embodiment, high CTI halogen-free flame-retardant polypropylene composition comprise each component of weight percent content as shown in table 1.
Present embodiment preparation of compositions method is with embodiment 1, and institute's difference is:
In the step 1, mixing time is 4 minutes;
In the step 2, the rotating speed of twin screw extruder is 320 rev/mins, and temperature is 210 ℃.
Table 1
| Material name | Comparative Examples 1 | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Vestolen PP 7052 | 71 | 71 | 45 | 75 | 67 |
| Compatilizer | 4 | 4 | 14 | 1 | 15 |
| Main flame retardant | 24.3 | 19.3 | 25 | 22 | 5 |
| Synergistic flame retardant | 0 | 5 | 15 | 1 | 12.8 |
| 168/1010（1：1） | 0.4 | 0.4 | 0.5 | 0.5 | 0.1 |
| Lubricant | 0.3 | 0.3 | 0.5 | 0.5 | 0.1 |
Embodiment 5
Comparative Examples 1 and the flame-proof polypropelene composition sample that embodiment 1～4 makes are carried out the performance test contrast, and mechanical property is tested with ASTM.Test result is as shown in table 2:
Table 2
| Test event | Comparative Examples 1 | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Notched Izod impact strength J/m | 65 | 70 | 75 | 80 | 78 |
| Modulus in flexure MPa | 1320 | 1450 | 1480 | 1550 | 1500 |
| Fire-retardant rank (3.2mm) | V0 | V0 | V0 | V0 | V0 |
| Fire-retardant rank (1.6mm) | V2 | V0 | V0 | V0 | V0 |
| ?GWIT（℃） | 750 | 850 | 850 | 850 | 850 |
| ?GWFI（℃） | 850 | 960 | 960 | 960 | 960 |
| ?CTI（V） | 500 | 600 | 600 | 600 | 600 |
Can be known that by table 2 embodiment 1 compares with Comparative Examples 1, fire-retardant rank gets a promotion, and comprehensive mechanical property also gets a promotion, and is in particular on the mechanical performance indexs such as modulus in flexure, shock strength all to obtain bigger raising; Explain that the compsn that adopts method preparation of the present invention and get is difficult to satisfy high defectives such as requirement to glowing filament, CTI and has carried out good improvement.Analyzing its reason is: main flame retardant and synergistic flame retardant join use mutually, effectively raise the glow wire temperature, the CTI voltage range that meet material; (Vestolen PP 7052-g-MAH) adding of compatilizer has improved the consistency of matrix material to polypropylene grafted maleic anhydride, has also effectively suppressed the problem of separating out of fire retardant to a certain extent, and mechanical property is also significantly optimized.。
In sum, high glow-wire of the present invention, high CTI halogen-free flame-retardant polypropylene composition have the excellent fire retardant characteristic, reach the fire-retardant V0 of UL94 (1.6mm) level; Through GWIT (850 ℃), GWFI (960 ℃) glowing filament, the product requirement flame retardant properties has been satisfied in test such as CIT (500V, 50); And good mechanical properties; Also improved the glow wire temperature of matrix material greatly, attached CTI performance, safety and environmental protection with excellence.Said composition can be used for making the flame retardant resistance height, and requires high glow-wire, high CTI excellence, particularly product to be in high temperature, the high-voltage environmental protection flame retardant goods of use down; Can be widely used in various fields such as electronics, household electrical appliances, motor.
Claims (10)
1. a high glow-wire, high CTI halogen-free flame-retardant polypropylene composition is characterized in that, comprise each component of following weight percent content:
2. high glow-wire according to claim 1, high CTI halogen-free flame-retardant polypropylene composition is characterized in that said Vestolen PP 7052 is a COPP.
3. high glow-wire according to claim 2, high CTI halogen-free flame-retardant polypropylene composition is characterized in that the percent crystallinity of said COPP is 50%～60%, and melting index is 20g/10min.
4. high glow-wire according to claim 1, high CTI halogen-free flame-retardant polypropylene composition is characterized in that said compatilizer is a maleic anhydride inoculated polypropylene.
5. high glow-wire according to claim 1, high CTI halogen-free flame-retardant polypropylene composition is characterized in that, said main flame retardant is a nitrogen phosphorus series non-halogen fire retardant.
6. high glow-wire according to claim 1, high CTI halogen-free flame-retardant polypropylene composition is characterized in that said synergistic flame retardant is the polyalcohols fire retardant.
7. high glow-wire according to claim 1, high CTI halogen-free flame-retardant polypropylene composition is characterized in that, said oxidation inhibitor is Hinered phenols antioxidant and the composite mixture of phosphite ester kind antioxidant.
8. high glow-wire according to claim 7, high CTI halogen-free flame-retardant polypropylene composition is characterized in that, said oxidation inhibitor is the composite mixture of antioxidant 1010 and oxidation inhibitor 168.
9. high glow-wire according to claim 1, high CTI halogen-free flame-retardant polypropylene composition is characterized in that said lubricant is the fatty acid lubricant.
10. the preparation method of a high glow-wire as claimed in claim 1, high CTI halogen-free flame-retardant polypropylene composition is characterized in that, comprises the steps:
Step 1, take by weighing said Vestolen PP 7052, compatilizer, main flame retardant, synergistic flame retardant, oxidation inhibitor, lubricant by weight ratio; Put into high-speed mixer and mixing 2～5 minutes, discharging;
Step 2, the raw material of handling well in the step 1 is put into the twin screw extruder extruding pelletization, the rotating speed of said twin screw extruder is 180～400 rev/mins, and temperature is 190～220 ℃.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102964695A (en) * | 2012-12-05 | 2013-03-13 | 上海日之升新技术发展有限公司 | High glow-wire/high-CTI halogenous flame-retardant polypropylene composite and preparation method thereof |
| CN105542317A (en) * | 2016-03-17 | 2016-05-04 | 上海日之升科技有限公司 | High-CTI environment-friendly and flame-retardant glass fiber reinforced PP material and preparation method thereof |
| CN105670105A (en) * | 2014-11-21 | 2016-06-15 | 合肥杰事杰新材料股份有限公司 | High-flow, high-modulus, flame-retarding polypropylene composite material for LFT-D production process |
| CN107513222A (en) * | 2016-06-16 | 2017-12-26 | 汉达精密电子(昆山)有限公司 | Glass fiber reinforced halogen-free flame-retardant polypropylene resin composite and its products formed |
| CN108084564A (en) * | 2017-12-26 | 2018-05-29 | 重庆普利特新材料有限公司 | A kind of high flame retardant, high oxygen index (OI) halogen-free anti-flaming polypropylene material and preparation method thereof |
| CN111004441A (en) * | 2019-12-20 | 2020-04-14 | 广东道生科技股份有限公司 | Halogen-free flame-retardant high-glow-wire high-CTI (comparative tracking index) polypropylene material for unattended electric appliance and preparation method thereof |
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| CN101735514A (en) * | 2009-12-29 | 2010-06-16 | 青岛国恩科技发展有限公司 | Flame-retardant polypropylene material and preparation method |
| CN102532693A (en) * | 2010-12-28 | 2012-07-04 | 辽宁杰事杰新材料有限公司 | High-performance low-smoke halogen-free flame-retardant polypropylene composite material and preparation method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101735514A (en) * | 2009-12-29 | 2010-06-16 | 青岛国恩科技发展有限公司 | Flame-retardant polypropylene material and preparation method |
| CN102532693A (en) * | 2010-12-28 | 2012-07-04 | 辽宁杰事杰新材料有限公司 | High-performance low-smoke halogen-free flame-retardant polypropylene composite material and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102964695A (en) * | 2012-12-05 | 2013-03-13 | 上海日之升新技术发展有限公司 | High glow-wire/high-CTI halogenous flame-retardant polypropylene composite and preparation method thereof |
| CN105670105A (en) * | 2014-11-21 | 2016-06-15 | 合肥杰事杰新材料股份有限公司 | High-flow, high-modulus, flame-retarding polypropylene composite material for LFT-D production process |
| CN105542317A (en) * | 2016-03-17 | 2016-05-04 | 上海日之升科技有限公司 | High-CTI environment-friendly and flame-retardant glass fiber reinforced PP material and preparation method thereof |
| CN107513222A (en) * | 2016-06-16 | 2017-12-26 | 汉达精密电子(昆山)有限公司 | Glass fiber reinforced halogen-free flame-retardant polypropylene resin composite and its products formed |
| CN108084564A (en) * | 2017-12-26 | 2018-05-29 | 重庆普利特新材料有限公司 | A kind of high flame retardant, high oxygen index (OI) halogen-free anti-flaming polypropylene material and preparation method thereof |
| CN111004441A (en) * | 2019-12-20 | 2020-04-14 | 广东道生科技股份有限公司 | Halogen-free flame-retardant high-glow-wire high-CTI (comparative tracking index) polypropylene material for unattended electric appliance and preparation method thereof |
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