CN109762331A - Nylon 66 slice modifying production process - Google Patents
Nylon 66 slice modifying production process Download PDFInfo
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- CN109762331A CN109762331A CN201910119374.8A CN201910119374A CN109762331A CN 109762331 A CN109762331 A CN 109762331A CN 201910119374 A CN201910119374 A CN 201910119374A CN 109762331 A CN109762331 A CN 109762331A
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Abstract
The invention discloses nylon 66 slice modifying production process, comprising the following steps: 1, to nano-modified aluminum hydroxide carry out surface modification；2, the preparation of composite material；3, composite molding；4, injection molding.Nanometer surface modification aluminium hydroxide is as fire retardant, it is that nano-modified aluminum hydroxide is carried out surface with different modifying agent to be modified, and determine the model and dosage of modifying agent, the nanometer surface modification aluminium hydroxide being modified is added in nylon66 fiber, using 100% or more nanometer additive skill upgrading product impact flexibility, 30% or more production cost is reduced.
Description
Technical field
The present invention relates to composite fibre preparation fields, in particular to nylon 66 slice modifying production process.
Background technique
Polyhexamethylene adipamide is commonly called as nylon -66, is a kind of thermoplastic resin, is white solid, density 1.14, fusing point
253 DEG C, common solvent is not dissolved in, phenyl methylcarbamate etc. is only soluble in.Its mechanical strength and hardness are very high, and rigidity is very big, can use workmanship
Engineering plastics are used as mechanical attachment, such as gear, lubrication bearing；Machine casing, automobile engine blade are done instead of nonferrous materials
Deng.It can also be used for synthetic fibers processed, Nylon-66 aftercondensated generally be made with adipic acid and hexamethylene diamine and obtains.
But high molecular material either plastics or fiber, general oxygen index (OI) is lower, inflammable.Thus develop a kind of modified Buddhist nun
Dragon 66, eliminates its existing obvious shortcoming, is the Main way studied at present.
Summary of the invention
The technical problem to be solved in the invention be existing nylon 66 material there are it is inflammable the defects of.
In order to solve the above technical problems, the present invention provides nylon 66 slice modifying production process, it is characterised in that including
Following steps:
1, surface modification is carried out to nano-modified aluminum hydroxide, nano-modified aluminum hydroxide is put into beaker and is mixed with water
Heating, ratio are every 100g nano-modified aluminum hydroxide to 850-900ml water, the modifying agent of addition 1% after being heated to 65-95 DEG C,
And high speed dispersion is filtered after 30 minutes in high shearing mixing emulsor, filtered filter cake drying is finely ground；
2, the preparation of composite material, the nanometer surface modification hydroxide for first crossing dried nylon 66 slice and modifier treatment
Aluminium proportionally mixes, and is 10:3-10:6 its ratio be the mass ratio of nylon 66 slice and nanometer surface modification aluminium hydroxide, mixes
After conjunction forced air drying 18-22 hours at a temperature of 90 DEG C, then squeezed out with double screw extruder；
3, composite molding, the material that double screw extruder is squeezed out is granulated or slice, and pellet or slice are again in 90 DEG C of temperature
It forms within lower forced air drying 18-22 hours；
4, injection molding, pellet or slice are molded into standardized product in injector.
Wherein preferred, the barrel temperature of double screw extruder is 230-250 DEG C, 200 rpms of screw speed；Nanometer
Modified aluminium hydroxide and water Hybrid Heating, ratio are every 100g nano-modified aluminum hydroxide to 875ml water；Nano modification hydroxide
Aluminium and water are mixed and heated to 75-80 DEG C；The mass ratio of nylon 66 slice and nanometer surface modification aluminium hydroxide is 10:4.
The double screw extruder includes rack, and extrusion device is arranged on the rack, and cooling is arranged outside extrusion device
Device, extrusion device include barrel, twin-screw and extrusion die, feed inlet are arranged on barrel, twin-screw is arranged in barrel
Portion, cooling device are arranged on the outside of barrel, and cooling device is the spiral shape cooling-water duct being wrapped on the outside of barrel, and cooling water is logical
Road both ends are respectively water inlet end and water outlet.
Metering pump is set at feed inlet and controls charging rate, using the mixture after drying as raw material, passes through metering pump, folder
Set insulating tube and fusing valve are directly entered screw rod, suitable auxiliary agent can also be added in screw rod difference section.
Homemade nano-modified aluminum hydroxide is modified with different surface modifiers, is added to Buddhist nun in varing proportions
In dragon 66, composite material is made.Flame retardant property, tensile property and the impact property of the composite material all make moderate progress.Pure nylon
66 be added to compared with 40 parts of nano-modified aluminum hydroxide/nylon 66 composite materials, limit oxygen index improves, tensile property
It improves, impact strength also improves.
Nanometer surface modification aluminium hydroxide is to carry out nano-modified aluminum hydroxide with different modifying agent as fire retardant
Surface is modified, and determines the model and dosage of modifying agent, and the nanometer surface modification aluminium hydroxide being modified is added in nylon66 fiber.
Using 100% or more nanometer additive skill upgrading product impact flexibility, 30% or more production cost is reduced.
For the modified slice reworked material of nylon66 fiber due to having the following performance, its application nature in the industry cycle is extensive.1. mechanical strong
Degree is high, and good toughness has higher tension, compression strength.The modified slice reworked material specific tensile strength of nylon66 fiber is higher than metal, than pressure
Contracting intensity is equally matched with metal, but its rigidity is not as good as metal.Tensile strength doubles more close to yield strength than ABS.
It is strong to the absorbability for impacting, answering force vibration, impact strength many higher than general plastics, and it is better than acetal resin.2. resistance to tired
Labor performance is prominent, and product is through repeatedly flexion is still able to maintain original mechanical strength repeatedly.Common escalator handrail, it is novel from
The driving extremely apparent occasion of plastic rim quasi-periodic fatigue effect often applies PA.3. softening point is high, heat-resisting.4. surface light
Sliding, coefficient of friction is small, wear-resisting.Make have self-lubrication when movable mechanical member, noise is low, is not added in rubbing action less Gao Shike
Lubricant uses；If needed really with lubricator to mitigate friction or help to radiate, water oil, grease etc. all be may be selected, and do
Corrosion-resistant, very alkaline-resisting and most of saline solutions for the modified slice reworked material of 5. nylon66 fiber of its long service life of transmission parts, also
Weak acid resistant, machine oil, gasoline, resistance to arene compounds and common solvent, it is inert to aromatic compound, but intolerant to strong acid and oxygen
Agent.The erosion of gasoline, oil, fat, alcohol, Ruo jian etc. can be resisted and have good ageing resistance.It can make lubricating oil, fuel
Deng packaging material.6. there is self-extinguishment, nontoxic, odorless, good weatherability is inert to bioerosion, has good antibacterial, resists
Mould ability.7. the modified slice reworked material of nylon66 fiber has excellent electric property.Electrical insulating property is good, and the volume resistance of nylon is very high,
Breakdown voltage resistant height can make power frequency insulating materials in dry environments, even if still having preferable electrical isolation under high humidity environment
Property.8. part weight is light, easy dyeing, easily molded.Because there is lower melt viscosity, can quickly flow.It is easy to mold filling, after mold filling
Freezing point is high, energy fast shaping, therefore short molding cycle, high production efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of double screw extruder of the present invention.
Specific embodiment
The optimal technical scheme that the invention will now be described in detail with reference to the accompanying drawings.
Nylon 66 slice modifying production process of the invention, it is characterised in that the following steps are included:
1, surface modification is carried out to nano-modified aluminum hydroxide, nano-modified aluminum hydroxide is put into beaker and is mixed with water
Heating, ratio are every 100g nano-modified aluminum hydroxide to 850-900ml water, the modifying agent of addition 1% after being heated to 65-95 DEG C,
And high speed dispersion is filtered after 30 minutes in high shearing mixing emulsor, filtered filter cake drying is finely ground；
2, the preparation of composite material, the nanometer surface modification hydroxide for first crossing dried nylon 66 slice and modifier treatment
Aluminium proportionally mixes, and is 10:3-10:6 its ratio be the mass ratio of nylon 66 slice and nanometer surface modification aluminium hydroxide, mixes
After conjunction forced air drying 18-22 hours at a temperature of 90 DEG C, then squeezed out with double screw extruder；
3, composite molding, the material that double screw extruder is squeezed out is granulated or slice, and pellet or slice are again in 90 DEG C of temperature
It forms within lower forced air drying 18-22 hours；
4, injection molding, pellet or slice are molded into standardized product in injector.
Wherein preferred, the barrel temperature of double screw extruder is 230-250 DEG C, 200 rpms of screw speed；Nanometer
Modified aluminium hydroxide and water Hybrid Heating, ratio are every 100g nano-modified aluminum hydroxide to 875ml water；Nano modification hydroxide
Aluminium and water are mixed and heated to 75-80 DEG C；The mass ratio of nylon 66 slice and nanometer surface modification aluminium hydroxide is 10:4.
The double screw extruder includes rack, and extrusion device is arranged on the rack, and cooling is arranged outside extrusion device
Device, extrusion device include barrel, twin-screw and extrusion die, feed inlet are arranged on barrel, twin-screw is arranged in barrel
Portion, cooling device are arranged on the outside of barrel, and cooling device is the spiral shape cooling-water duct being wrapped on the outside of barrel, and cooling water is logical
Road both ends are respectively water inlet end and water outlet.
Metering pump is set at feed inlet and controls charging rate, using the mixture after drying as raw material, passes through metering pump, folder
Set insulating tube and fusing valve are directly entered screw rod, suitable auxiliary agent can also be added in screw rod difference section.
Homemade nano-modified aluminum hydroxide is modified with different surface modifiers, is added to Buddhist nun in varing proportions
In dragon 66, composite material is made.Flame retardant property, tensile property and the impact property of the composite material all make moderate progress.Pure nylon
66 be added to compared with 40 parts of nano-modified aluminum hydroxide/nylon 66 composite materials, limit oxygen index improves, tensile property
It improves, impact strength also improves.
Nanometer surface modification aluminium hydroxide is to carry out nano-modified aluminum hydroxide with different modifying agent as fire retardant
Surface is modified, and determines the model and dosage of modifying agent, and the nanometer surface modification aluminium hydroxide being modified is added in nylon66 fiber,
Using 100% or more nanometer additive skill upgrading product impact flexibility, 30% or more production cost is reduced.
For the modified slice reworked material of nylon66 fiber due to having the following performance, its application nature in the industry cycle is extensive.1. mechanical strong
Degree is high, and good toughness has higher tension, compression strength.The modified slice reworked material specific tensile strength of nylon66 fiber is higher than metal, than pressure
Contracting intensity is equally matched with metal, but its rigidity is not as good as metal.Tensile strength doubles more close to yield strength than ABS.
It is strong to the absorbability for impacting, answering force vibration, impact strength many higher than general plastics, and it is better than acetal resin.2. resistance to tired
Labor performance is prominent, and product is through repeatedly flexion is still able to maintain original mechanical strength repeatedly.Common escalator handrail, it is novel from
The driving extremely apparent occasion of plastic rim quasi-periodic fatigue effect often applies PA.3. softening point is high, heat-resisting.4. surface light
Sliding, coefficient of friction is small, wear-resisting.Make have self-lubrication when movable mechanical member, noise is low, is not added in rubbing action less Gao Shike
Lubricant uses；If needed really with lubricator to mitigate friction or help to radiate, water oil, grease etc. all be may be selected, and do
Corrosion-resistant, very alkaline-resisting and most of saline solutions for the modified slice reworked material of 5. nylon66 fiber of its long service life of transmission parts, also
Weak acid resistant, machine oil, gasoline, resistance to arene compounds and common solvent, it is inert to aromatic compound, but intolerant to strong acid and oxygen
Agent.The erosion of gasoline, oil, fat, alcohol, Ruo jian etc. can be resisted and have good ageing resistance.It can make lubricating oil, fuel
Deng packaging material.6. there is self-extinguishment, nontoxic, odorless, good weatherability is inert to bioerosion, has good antibacterial, resists
Mould ability.7. the modified slice reworked material of nylon66 fiber has excellent electric property.Electrical insulating property is good, and the volume resistance of nylon is very high,
Breakdown voltage resistant height can make power frequency insulating materials in dry environments, even if still having preferable electrical isolation under high humidity environment
Property.8. part weight is light, easy dyeing, easily molded.Because there is lower melt viscosity, can quickly flow.It is easy to mold filling, after mold filling
Freezing point is high, energy fast shaping, therefore short molding cycle, high production efficiency.
Product formed after injection molding is tested through burning limiting oxygen index determination, tensile property test and impact property, as a result
Optimize than pure nylon66 fiber.The advantages of manufacturing technology of nano-nylon will be rapidly developed with application, nano-nylon is its heat
Performance, mechanical property, anti-flammability, barrier property are higher than pure nylon, and manufacturing cost is suitable with common nylon, thus have very big
Competitiveness.
Claims (6)
1. nylon 66 slice modifying production process, it is characterised in that the following steps are included:
1) surface modification is carried out to nano-modified aluminum hydroxide, nano-modified aluminum hydroxide is put into beaker and is mixed with water
Heating, ratio are every 100g nano-modified aluminum hydroxide to 850-900ml water, the modifying agent of addition 1% after being heated to 65-95 DEG C,
And high speed dispersion is filtered after 30 minutes in high shearing mixing emulsor, filtered filter cake drying is finely ground；
2) preparation of composite material, the nanometer surface modification hydroxide for first crossing dried nylon 66 slice and modifier treatment
Aluminium proportionally mixes, and is 10:3-10:6 its ratio be the mass ratio of nylon 66 slice and nanometer surface modification aluminium hydroxide, mixes
After conjunction forced air drying 18-22 hours at a temperature of 90 DEG C, then squeezed out with double screw extruder；
3) composite molding, the material that double screw extruder is squeezed out is granulated or slice, and pellet or slice are again in 90 DEG C of temperature
It forms within lower forced air drying 18-22 hours；
4) injection molding, pellet or slice are molded into standardized product in injector.
2. nylon 66 slice modifying production process as described in claim 1, it is characterised in that: the barrel temperature of double screw extruder
Degree is 230-250 DEG C, 200 rpms of screw speed.
3. nylon 66 slice modifying production process as claimed in claim 2, it is characterised in that: nano-modified aluminum hydroxide and water
Hybrid Heating, ratio are every 100g nano-modified aluminum hydroxide to 875ml water.
4. the nylon 66 slice modifying production process as described in claims 1 or 2 or 3, it is characterised in that: nano modification hydroxide
Aluminium and water are mixed and heated to 75-80 DEG C.
5. nylon 66 slice modifying production process as claimed in claim 4, it is characterised in that: nylon 66 slice and Nanosurface
The mass ratio of modified aluminium hydroxide is 10:4.
6. nylon 66 slice modifying production process as claimed in claim 5, it is characterised in that: the double screw extruder includes
Extrusion device is arranged in rack on the rack, and cooling device is arranged outside extrusion device, and extrusion device includes barrel, twin-screw
And extrusion die, feed inlet is set on barrel, and twin-screw is arranged inside barrel, and cooling device is arranged on the outside of barrel, cold
But device is the spiral shape cooling-water duct being wrapped on the outside of barrel, and cooling-water duct both ends are respectively water inlet end and water outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910119374.8A CN109762331A (en) | 2019-02-18 | 2019-02-18 | Nylon 66 slice modifying production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910119374.8A CN109762331A (en) | 2019-02-18 | 2019-02-18 | Nylon 66 slice modifying production process |
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| CN109762331A true CN109762331A (en) | 2019-05-17 |
Family
ID=66456828
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| CN201910119374.8A Pending CN109762331A (en) | 2019-02-18 | 2019-02-18 | Nylon 66 slice modifying production process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110370582A (en) * | 2019-05-31 | 2019-10-25 | 熊雪根 | A kind of preparation process and device of polyamide |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001279091A (en) * | 2000-03-31 | 2001-10-10 | Asahi Kasei Corp | Flame-retardant reinforced polyamide composition |
| CN102702736A (en) * | 2012-05-31 | 2012-10-03 | 东莞市帝信光电科技有限公司 | Plastic heat radiating seat for LED (Light Emitting Diode) bulb and production method of plastic heat radiating seat |
| CN106554617A (en) * | 2016-12-01 | 2017-04-05 | 江苏灵烯新材料有限公司 | A kind of polyamide material of high intensity |
-
2019
- 2019-02-18 CN CN201910119374.8A patent/CN109762331A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001279091A (en) * | 2000-03-31 | 2001-10-10 | Asahi Kasei Corp | Flame-retardant reinforced polyamide composition |
| CN102702736A (en) * | 2012-05-31 | 2012-10-03 | 东莞市帝信光电科技有限公司 | Plastic heat radiating seat for LED (Light Emitting Diode) bulb and production method of plastic heat radiating seat |
| CN106554617A (en) * | 2016-12-01 | 2017-04-05 | 江苏灵烯新材料有限公司 | A kind of polyamide material of high intensity |
Non-Patent Citations (2)
| Title |
|---|
| 赵雪峰: "纳米改性氢氧化铝/尼龙66复合材料的制备及其力学性能的研究", 《橡塑技术与装备》 * |
| 陈妍 等: "纳米改性氢氧化铝/尼龙66复合材料的制备及其力学性能的研究", 《塑料》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110370582A (en) * | 2019-05-31 | 2019-10-25 | 熊雪根 | A kind of preparation process and device of polyamide |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190517 |
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