CN102732023A - Flame-retardant glass fiber reinforced PA66 (Poly A 66)/PA610 alloy composition and preparation method thereof - Google Patents
Flame-retardant glass fiber reinforced PA66 (Poly A 66)/PA610 alloy composition and preparation method thereof Download PDFInfo
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- CN102732023A CN102732023A CN2012102474465A CN201210247446A CN102732023A CN 102732023 A CN102732023 A CN 102732023A CN 2012102474465 A CN2012102474465 A CN 2012102474465A CN 201210247446 A CN201210247446 A CN 201210247446A CN 102732023 A CN102732023 A CN 102732023A
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Abstract
The invention relates to a flame-retardant glass fiber reinforced PA66 (Poly A 66)/PA610 alloy composition and a preparation method thereof. The composition comprises the following components in percentage by weight: 20% to 41% of PA610, 20% to 41% of PA66, 0 to 15% of compound flame-retardant masterbatch, 20% to 40% of glass fibers, 0.1% to 1% of antioxygen, and 0.1% to 1% of lubricating dispersing agent. The preparation method of the composition comprises the steps of: mixing the components which are weighted according to the percentage by weight in a high mixing machine for 2 to 5 minutes, and then discharging the mixed components; and extruding and granulating the mixed components through a twin-screw extruder, wherein the processing temperature ranges from 235 to 260 DEG C, and the revolution rate of each screw is 30 to 40 Hz. Compared with the prior art, the composition provided by the invention has the advantages of high CTI (Comparative Tracking lndex) value, low fire retardant precipitation, halogen-free performance, environment friendliness and balance in comprehensive performance, and can be widely applied to the products in the field of electronic appliances such as contactors, leakage protectors, and housings of breakers.
Description
Technical field
The present invention relates to a kind of alloy composite and preparation method thereof, especially relate to a kind of flame-proof glass fibre and strengthen PA66/PA610 alloy composite and preparation method thereof.
Background technology
In recent years; The electric industrial boom of China; Increasing demand to the fire-retardant enhancement engineering plastics of high electric insulation increases, all need be with the engineering plastic materials with good comprehensive mechanical properties, flame retardant properties and electrical insulation capability like low-voltage vacuum contactor, isolating switch, earth leakage protective device, connector, low-tension switch, the electric element of thin-walled etc.In this product scope, the consumption of polyamide (PA) is maximum.Yet because the relative industry of development of fire retardant relatively lags behind concerning the requirement that material improves day by day, a variety of fire retardants join mechanical property, the electrical insulation capability that can greatly reduce material in the material.For example, phase ratio creepage tracking index (CTI) drops to 200V even lower from 600V, and in addition, along with the enforcement of RoHs of European Union and WEEE instruction, traditional bromine is that flame-retardant system can not satisfy this requirement, and the use of some fire retardant simultaneously also can be restricted.Along with development of technology engineering plastics process of localization is also being accelerated.Rizhisheng New Technology Development Co., Ltd., Shanghai strengthens PA66/PA610 alloy composite product to high CTI value, the low fire retardant property separated out flame-proof glass fibre and has carried out deep research.The high CTI value of being developed, the low fire retardant property separated out, flame-proof glass fibre strengthen PA66/PA610 alloy composite product and have successfully substituted the like product that companies such as BASF produce; Realized the production domesticization of this series products; When being included in the localization of raw material plan by some foreign capital affiliates, this material also begins to export to the European and American areas.
Summary of the invention
The object of the invention is exactly to provide a kind of flame-proof glass fibre to strengthen PA66/PA610 alloy composite and preparation method thereof for the defective that overcomes above-mentioned prior art existence.Advantage of the present invention is to have high CTI value, the low fire retardant property separated out, halogen-free environmental, and over-all properties is balanced, can be widely used in the product of field of electronics such as contactor, earth leakage protective device, case for circuit breaker.
First purpose of the present invention realizes through following technical scheme:
A kind of flame-proof glass fibre strengthens the PA66/PA610 alloy composite; The component of said alloy composite and the weight percent content of each component are: PA61020～41%; PA6620～41%, compositional flame-retardant master batch 0～15%, spun glass 20～40%; Oxidation inhibitor 0.1～1%, lubrication dispersing agent 0.1～1%.
Preferably, said PA66 is a polycaprolactam, and the limiting viscosity of said polycaprolactam is 2.4dL/g.
Preferably, the weight percent content of the component of said compositional flame-retardant master batch and each component is: deironing red phosphorus master batch 50%; Antimigration agent 25%; High CTI auxiliary agent 25%.
Preferably, said spun glass is an alkali free glass fibre, and handle through silane coupling agent on its surface.
Preferably, said oxidation inhibitor is Hinered phenols antioxidant.
Preferably, said lubrication dispersing agent is a silicone.
Preferably, the limiting viscosity of said PA610 is 2.4dL/g.
Second purpose of the present invention realizes through following technical scheme:
A kind of method for preparing said flame-proof glass fibre enhancing PA66/PA610 alloy composite said method comprising the steps of: take by weighing each component: PA61020～41% by following component and weight percent content thereof, PA6620～41%; Compositional flame-retardant master batch 0～15%, spun glass 20～40%, oxidation inhibitor 0.1～1%; Lubrication dispersing agent 0.1～1%; Put into high-speed mixer and mixing 2～5 minutes, the twin screw extruder extruding pelletization is used in discharging then; Processing temperature is at 235～260 ℃, and the screw rod revolution is at 30～40Hz.
Compared with prior art, the present invention adopts compositional flame-retardant master batch system, compares with traditional fire-retardant master granule, and compositional flame-retardant master batch system has following characteristics: 1) comprehensive mechanical property is higher; 2) can CTI be brought up to 660V from 390V; 3) overcome the product surface that common red phosphorus moves under certain condition, under the effect of oxygen G&W, finally to form the mordant phosphorus of metallic article be the defective of acidic substance to red phosphorus then.The oxidation inhibitor that adds is that a kind of Hinered phenols antioxidant can improve compsn in the antioxidant property of the course of processing and the ageing resistance in the use; Adopt silicone as lubricant, improve the materials processed flowability, reduce frictional coefficient; Improve smooth property, under specific processing conditions, adopt dispersiveness better, the residence time is short; Shear weak slightly combination, prevent that fire retardant from decomposing, thereby guaranteed the steady quality of material.
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.
Embodiment 1
Present embodiment relates to a kind of flame-proof glass fibre and strengthens PA66/PA610 alloy composite and preparation method thereof;
Each component and the weight percent content thereof of said alloy composite are following: PA61041%, PA6620%, compositional flame-retardant master batch 9.9%, spun glass 28%, oxidation inhibitor 1.0%, lubrication dispersing agent 0.1%.
The preparation method of said alloy composite comprises the steps: to take by weighing each component: PA61041% by following component and weight percent content thereof, PA6620%, compositional flame-retardant master batch 9.9%, spun glass 28%, oxidation inhibitor 1.0%, lubrication dispersing agent 0.1%; Put into high-speed mixer and mixing 2 minutes, the twin screw extruder extruding pelletization is used in discharging then, and processing temperature is at 235～260 ℃, and the screw rod revolution is at 30Hz; Each section of twin screw extruder temperature is as shown in table 2.
Said compositional flame-retardant master batch is mixed by three kinds of components, and the weight percent content of each component is: deironing red phosphorus master batch 50%; Antimigration agent 25%; High CTI auxiliary agent 25%.
Embodiment 2
Present embodiment relates to a kind of flame-proof glass fibre and strengthens PA66/PA610 alloy composite and preparation method thereof;
Each component and the weight percent content thereof of said alloy composite are following: PA61030%, PA6634%, compositional flame-retardant master batch 15%, spun glass 20%, oxidation inhibitor 0.7%, lubrication dispersing agent 0.3%.
The preparation method of said alloy composite comprises the steps: to take by weighing each component: PA61030% by following component and weight percent content thereof, PA6634%, compositional flame-retardant master batch 15%, spun glass 20%, oxidation inhibitor 0.7%, lubrication dispersing agent 0.3%; Put into high-speed mixer and mixing 3 minutes, the twin screw extruder extruding pelletization is used in discharging then, and processing temperature is at 235～260 ℃, and the screw rod revolution is at 33Hz; Each section of twin screw extruder temperature is as shown in table 2.
Said compositional flame-retardant master batch is mixed by three kinds of components, and the weight percent content of each component is: deironing red phosphorus master batch 50%; Antimigration agent 25%; High CTI auxiliary agent 25%.
Embodiment 3
Present embodiment relates to a kind of flame-proof glass fibre and strengthens PA66/PA610 alloy composite and preparation method thereof;
Each component and the weight percent content thereof of said alloy composite are following: PA61020%, PA6641%, compositional flame-retardant master batch 4%, spun glass 34%, oxidation inhibitor 0.3%, lubrication dispersing agent 0.7%.
The preparation method of said alloy composite comprises the steps: to take by weighing each component: PA61020% by following component and weight percent content thereof, PA6641%, compositional flame-retardant master batch 4%, spun glass 34%, oxidation inhibitor 0.3%, lubrication dispersing agent 0.7%; Put into high-speed mixer and mixing 4 minutes, the twin screw extruder extruding pelletization is used in discharging then, and processing temperature is at 235～260 ℃, and the screw rod revolution is at 36Hz; Each section of twin screw extruder temperature is as shown in table 2.
Said compositional flame-retardant master batch is mixed by three kinds of components, and the weight percent content of each component is: deironing red phosphorus master batch 50%; Antimigration agent 25%; High CTI auxiliary agent 25%.
Embodiment 4
Present embodiment relates to a kind of flame-proof glass fibre and strengthens PA66/PA610 alloy composite and preparation method thereof;
Each component and the weight percent content thereof of said alloy composite are following: PA61034%, PA6624.9%, compositional flame-retardant master batch 0%, spun glass 40%, oxidation inhibitor 0.1%, lubrication dispersing agent 1.0%.
The preparation method of said alloy composite comprises the steps: to take by weighing each component: PA61034% by following component and weight percent content thereof, PA6624.9%, compositional flame-retardant master batch 0%, spun glass 40%, oxidation inhibitor 0.1%, lubrication dispersing agent 1.0%; Put into high-speed mixer and mixing 5 minutes, the twin screw extruder extruding pelletization is used in discharging then, and processing temperature is at 235～260 ℃, and the screw rod revolution is at 40Hz; Each section of twin screw extruder temperature is as shown in table 2.
Said compositional flame-retardant master batch is mixed by three kinds of components, and the weight percent content of each component is: deironing red phosphorus master batch 50%; Antimigration agent 25%; High CTI auxiliary agent 25%.
Comparative Examples 1～3
Comparative Examples 1～3 provides a kind of alloy composite respectively, and the component of alloy composite and the weight percent content of each component are as shown in table 1, and the preparation method is with embodiment 1; Each section of twin screw extruder temperature is as shown in table 2
The component and the content of table 1 Comparative Examples 1～3 and embodiment 1～4 interalloy compsn
Each section of twin screw extruder temperature in table 2 Comparative Examples 1～3 and embodiment 1～4 interalloy preparation method of composition
Implementation result
Get the alloy composite that Comparative Examples 1～3 and embodiment 1～4 make, adopt the ASTM standard to carry out the performance test contrast; Each item The performance test results is as shown in table 3; Can find out that by table 3 sample of the present invention has high CTI value, the low fire retardant property separated out, halogen-free environmental, over-all properties is balanced, can be widely used in the product of field of electronics such as contactor, earth leakage protective device, case for circuit breaker.
Table 3 Comparative Examples 1～3 and embodiment 1～4 interalloy composition properties test result (ASTM standard)
Claims (8)
1. a flame-proof glass fibre strengthens the PA66/PA610 alloy composite; It is characterized in that the component of said alloy composite and the weight percent content of each component are: PA61020～41%, PA6620～41%; Compositional flame-retardant master batch 0～15%; Spun glass 20～40%, oxidation inhibitor 0.1～1%, lubrication dispersing agent 0.1～1%.
2. flame-proof glass fibre according to claim 1 strengthens the PA66/PA610 alloy composite, it is characterized in that said PA66 is a polycaprolactam, and the limiting viscosity of said polycaprolactam is 2.4dL/g.
3. flame-proof glass fibre according to claim 1 strengthens the PA66/PA610 alloy composite, it is characterized in that the component of said compositional flame-retardant master batch and the weight percent content of each component are: deironing red phosphorus master batch 50%; Antimigration agent 25%; High CTI auxiliary agent 25%.
4. flame-proof glass fibre according to claim 1 strengthens the PA66/PA610 alloy composite, it is characterized in that said spun glass is an alkali free glass fibre, and handle through silane coupling agent on its surface.
5. flame-proof glass fibre according to claim 1 strengthens the PA66/PA610 alloy composite, it is characterized in that said oxidation inhibitor is Hinered phenols antioxidant.
6. flame-proof glass fibre according to claim 1 strengthens the PA66/PA610 alloy composite, it is characterized in that said lubrication dispersing agent is a silicone.
7. strengthen the PA66/PA610 alloy composite according to each described flame-proof glass fibre of claim 1 to 6, it is characterized in that the limiting viscosity of said PA610 is 2.4dL/g.
8. one kind prepares the method that the described flame-proof glass fibre of claim 1 strengthens the PA66/PA610 alloy composite, it is characterized in that, said method comprising the steps of: take by weighing each component: PA61020～41% by following component and weight percent content thereof; PA6620～41%, compositional flame-retardant master batch 0～15%, spun glass 20～40%; Oxidation inhibitor 0.1～1%, lubrication dispersing agent 0.1～1% was put into high-speed mixer and mixing 2～5 minutes; Discharging; Use the twin screw extruder extruding pelletization then, processing temperature is at 235～260 ℃, and the screw rod revolution is at 30～40Hz.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112608595A (en) * | 2020-11-25 | 2021-04-06 | 金发科技股份有限公司 | Red phosphorus flame-retardant polyamide composition and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102558839A (en) * | 2011-12-21 | 2012-07-11 | 上海普利特复合材料股份有限公司 | Low odor, anti-static electricity, red phosphorus flame retardant thermoplastic composition and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102558839A (en) * | 2011-12-21 | 2012-07-11 | 上海普利特复合材料股份有限公司 | Low odor, anti-static electricity, red phosphorus flame retardant thermoplastic composition and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112608595A (en) * | 2020-11-25 | 2021-04-06 | 金发科技股份有限公司 | Red phosphorus flame-retardant polyamide composition and preparation method and application thereof |
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Application publication date: 20121017 |