CN106675005A - Long hemp fiber reinforced nylon composite material and preparation method thereof - Google Patents
Long hemp fiber reinforced nylon composite material and preparation method thereof Download PDFInfo
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- CN106675005A CN106675005A CN201611223225.9A CN201611223225A CN106675005A CN 106675005 A CN106675005 A CN 106675005A CN 201611223225 A CN201611223225 A CN 201611223225A CN 106675005 A CN106675005 A CN 106675005A
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- nylon
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- flaxen fiber
- antioxidant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
-
- 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
- B29C48/92—Measuring, controlling or regulating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/045—Reinforcing macromolecular compounds with loose or coherent fibrous material with vegetable or animal fibrous material
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
- C08J2377/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The invention discloses a long hemp fiber reinforced nylon composite material and a preparation method thereof. The long hemp fiber reinforced nylon composite material is prepared from the following raw materials in parts by weight: 40 to 80 parts of nylon 6, 10 to 30 parts of nylon 66, 20 to 60 parts of long hemp fibers, 0.5 to 1 part of lubricant and 0.1 to 1.5 parts of antioxidant. The long hemp fiber reinforced nylon composite material has the advantages that 1, the hemp fibers and the nylon are high in affinity and high in combination force, and no compatilizer is needed, so that the effect of the nylon on immersing the hemp fibers can be improved; 2, the flexibility of the hemp fibers compensates the characteristic of the nylon with poor flexibility; 3, the long hemp fibers are low in density, so that the density of the material is decreased, and an effect on reducing the weight of components is obvious; and 4, the long hemp fibers are natural materials, so that the long hemp fiber reinforced nylon composite material is an environment-friendly material.
Description
Technical field
The present invention relates to technical field of polymer materials, more particularly, to long flaxen fiber nylon material and its preparation side are strengthened
Method.
Background technology
It is a kind of composite for being different from common glass fibre, carbon fiber reinforced nylon that long flaxen fiber strengthens nylon,
Long flaxen fiber toughness is better than glass fibre and carbon fiber, therefore flaxen fiber strengthens the spy that nylon has high-intensity high-tenacity simultaneously
Property.And there is great amount of hydroxy group in flaxen fiber surface, therefore flaxen fiber has very high affinity, two-phase interface adhesion with nylon
By force, compared with glass fibre, carbon fiber, long flaxen fiber strengthens nylon and has higher toughness, low-density and preferably anti-sticks up
Qu Nengli.
Affect the principal element of long flaxen fiber enhancing nylon material physical property as follows：1, flaxen fiber and nylon interface cohesion
State affects very big to material physical property；2, the mobility of flaxen fiber effect length nylon and the shock resistance of material.3,
Processing temperature is very big to the intensity effect of flaxen fiber, so as to affect final long flaxen fiber to strengthen the physical property of nylon.
In the preparation process that long flaxen fiber strengthens nylon material, the viscosity of nylon is lower, and its mobility is better, resin pair
Flaxen fiber dipping is more abundant.Therefore it is general that the viscous of nylon raw material is generally reduced during fiber reinforced nylon is prepared
Degree, or processing temperature is improved, but improving processing temperature may cause flaxen fiber coking, so as to cause the intensity of flaxen fiber
Decline, therefore the technique in strict control flaxen fiber dipping process is particularly important.
The content of the invention
The purpose of the present invention is that the long flaxen fiber for preparing a kind of high-intensity high-tenacity strengthens nylon composite materials, overcomes length
The problem that flaxen fiber turns yellow in high temperature environments, there is provided a kind of to have low-density simultaneously, the nylon of high intensity high impact changes
Property method.The present invention can prepare mobility, compatibility, the modified nylon materials of rigidity-toughness balanced.
The technical problem to be solved is：For above-mentioned technical disadvantages, propose that a kind of long flaxen fiber strengthens nylon
Composite and preparation method thereof, can strengthen nylon mobility and its dipping effect with glass, reduce flaxen fiber high temperature and become
Yellow degree, increases the impact strength of material.
The purpose of the present invention is to be achieved through the following technical solutions：
A kind of long flaxen fiber strengthens nylon composite materials, including the following raw material counted by weight：
Wherein,
The long flaxen fiber is the special long fibre of nylon, and it first passes through in advance 90 DEG C of heating treatments through twisting process
4h, its a diameter of 20-300 μm.
Due to the fluffing of natural ramie fiber broken yarn, easily there is fiber spin-off from Shu Xianxiang by the shear action of melt, finally
Cause broken yarn, in the present invention, long flaxen fiber adopts twisting process, make the mutual obvolvent of flaxen fiber, reach and avoid fiber spin-off from producing
It is raw from Shu Xianxiang, so as to avoid broken yarn from causing production disruption phenomenon.Simultaneously as long flaxen fiber first passes through in advance 90 DEG C of air adding
Heat treatment 4h, the free water molecule desorption of flaxen fiber adsorption, so as to the exhaust for reducing long flaxen fiber plus man-hour generation shows
As solving the problems, such as production scene exhaust emission.And the reduction of flaxen fiber surface free water molecule can improve well
The bonding state of flaxen fiber and nylon, so as to play the mechanical property of long flaxen fiber.
It is important to note that in the prior art, those skilled in the art are typically fed using banbury or screw rod side
Material mode produces flaxen fiber strengthens nylon material, and flaxen fiber is damaged by significant mechanical, and flaxen fiber average length is substantially reduced, from
And cause final product mechanical property not good.As can be seen here, the present invention dexterously adopts flaxen fiber twisting, prebaking technique, with
And die head impregnation technology, solve the problems, such as that this area flaxen fiber length is damaged breakthroughly.
The lubricant is dendroid branched Nylon, and its molecular structure is different from common wire nylon.
One or more of the antioxidant in Hinered phenols, hindered amines, phosphite ester or thioether kind antioxidant,
Including antioxidant 1010, irgasfos 168, antioxidant 3114, one or more in antioxidant 619 or antioxidant DSTP.
In the present invention, lubricant is dendroid branched Nylon, without the need for reusing the flow modifiers such as stearic acid, butyl stearate
Agent, the and in the past lubricant such as stearic acid, butyl stearate can damage the impact property of material, and there may be precipitation frosting etc. and ask
Topic, and Dendritic Nylon solves problem above just.
Above-mentioned long flaxen fiber strengthens the preparation method of nylon material, comprises the following steps：
(1) nylon, antioxidant, lubricant are added in high-speed mixer and are fully mixed；
(2) mixture that step (1) is obtained is added in double screw extruder；
(3) blend melt is expressed in special dipping die cavity, then by long flaxen fiber by dipping die head, cool down,
Pelletizing, obtaining long flaxen fiber strengthens nylon material；Extrusion temperature is respectively：100 DEG C, 180 DEG C, 210 DEG C, 230 DEG C, 250 DEG C,
280 DEG C, 300 DEG C, 300 DEG C.Engine speed is 350rpm.
The long flaxen fiber strengthens nylon composite materials and granulates length in 6~20mm.
It is an advantage of the invention that：
1, nylon 6 can be selected in a wide range with the viscosity of nylon66 fiber, and without the need for limiting low viscosity nylon is selected；
2, it is not necessary to which special selection is carried out to the intensity and kind of flaxen fiber, select high intensity, high dispersive without the need for limiting
Property flaxen fiber.
3, it is not necessary to which special pretreatment is carried out to flaxen fiber surface.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the common skill to this area
For art personnel, without departing from the inventive concept of the premise, some deformations and improvement can also be made.This belongs to the present invention
Protection domain.
Embodiment 1~2
The present embodiment is related to a kind of long flaxen fiber strengthens nylon material and preparation method thereof, and the method is as follows：
Step one, weighs by weight ratio raw material, and each component and its data are shown in Table 1；
Step 2, the raw material for weighing by weight ratio is put into high-speed mixer and mixing 1~5 minute, blowing, then uses extruder
Extruding pelletization, comprises the following steps that：
The first step：Nylon, antioxidant, lubricant are proportionally added in extruder, it is defeated after extruder is plastified
In being sent to high-temperature fusant dipping die cavity, high temperature dipping die cavity internal temperature is 300~330 DEG C, and the temperature of screw extruder is 280
~300 DEG C.Wherein nylon 6 is provided by Rui Meifu companies, and the trade mark is MF800；Nylon66 fiber is provided by Shen Ma companies, and the trade mark is
F227D；Antioxidant is using the 1010,168 of BASF AG's offer；Lubricant is provided by morning source molecule new material company, board
Number be CYD-701C.
Second step, long glass fibres is entered in high-temperature fusant dipping die cavity with the speed drawing of 5~30m/min, melt
The length of dipping die cavity is 2~5m, after being sufficiently impregnated with, cooling, and pelletizing, obtaining long flaxen fiber strengthens nylon material.
Comparative example 1~2
The present embodiment is related to a kind of long flaxen fiber strengthens nylon material and preparation method thereof, and the method is as follows：
Step one, weighs by weight ratio raw material, and each component and its data are shown in Table 1；
Step 2, weighs by weight ratio raw material and is put into high-speed mixer and mixing 1~5 minute, blowing, is then squeezed with extruder
Go out granulation, comprise the following steps that：
The first step, nylon, antioxidant are proportionally added in extruder, are plastified by extruder；
Second step, long flaxen fiber is fed in double screw extruder with side feeding manner, and extrusion, cooling, pelletizing obtains fiber crops
Fiber reinforced nylon material.
Table 1
| Material name | Embodiment 1 | Embodiment 2 | Comparative example 1 | Comparative example 2 |
| Nylon 6 | 60 | 50 | 60 | 50 |
| Nylon66 fiber | 18 | 18 | 18 | 18 |
| Long flaxen fiber | 20 | 30 | 20 | 30 |
| Antioxidant | 1.5 | 1.5 | 1.5 | 1.5 |
| Lubricant | 0.5 | 0.5 | 0.5 | 0.5 |
By sample obtained in embodiment 1~2, performance test is carried out, using iso standard, concrete outcome is shown in Table 2：
Table 2
By upper table 2 it can be seen that inventive samples have higher mechanical performance and impact strength.
The present invention can also have other embodiment, and all technical schemes formed using equal replacement or equivalent transformation are existed
Within the scope of protection of present invention.
Claims (7)
1. a kind of long flaxen fiber strengthens nylon composite materials, it is characterised in that：Including the following raw material counted by weight：
2. a kind of long flaxen fiber according to claim 1 strengthens nylon composite materials, it is characterised in that：Described long fiber crops are fine
Tie up as the special long fibre of nylon, it first passes through in advance 90 DEG C of heating treatment 4h through twisting process, its a diameter of 20-300 μ
m。
3. a kind of long flaxen fiber according to claim 1 strengthens nylon composite materials, it is characterised in that：The lubricant is
Dendroid branched Nylon, its molecular structure is different from common wire nylon.
4. a kind of long flaxen fiber according to claim 1 strengthens nylon composite materials, it is characterised in that：The antioxidant choosing
One or more from Hinered phenols, hindered amines, phosphite ester or thioether kind antioxidant.
5. a kind of long flaxen fiber according to claim 1 strengthens nylon composite materials, it is characterised in that：The antioxidant choosing
From antioxidant 1010, irgasfos 168, antioxidant 3114, one or more in antioxidant 619 or antioxidant DSTP.
6. claim 1-5 one of the arbitrarily long flaxen fiber strengthens the preparation method of nylon material, it is characterised in that：Including with
Lower step：
(1) nylon, antioxidant, lubricant are added in high-speed mixer and are fully mixed；
(2) mixture that step (1) is obtained is added in double screw extruder；
(3) blend melt is expressed in special dipping die cavity, then by long flaxen fiber by impregnate die head, cooling, pelletizing,
Obtaining long flaxen fiber strengthens nylon material.Extrusion temperature is respectively：100 DEG C, 180 DEG C, 210 DEG C, 230 DEG C, 250 DEG C, 280 DEG C,
300 DEG C, 300 DEG C.Engine speed is 350rpm.
7. the long flaxen fiber described in claim 6 strengthens the preparation method of nylon material, it is characterised in that：The long flaxen fiber increases
Strong nylon composite materials granulate length in 6~20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611223225.9A CN106675005A (en) | 2016-12-27 | 2016-12-27 | Long hemp fiber reinforced nylon composite material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611223225.9A CN106675005A (en) | 2016-12-27 | 2016-12-27 | Long hemp fiber reinforced nylon composite material and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107141790A (en) * | 2017-06-14 | 2017-09-08 | 陈丽 | A kind of high strength composite and preparation method thereof |
| CN109096746A (en) * | 2018-08-22 | 2018-12-28 | 浙江新力新材料股份有限公司 | A kind of flaxen fiber enhancing nylon composite materials and preparation method thereof |
| CN109825067A (en) * | 2019-02-25 | 2019-05-31 | 浙江普利特新材料有限公司 | A kind of high flowing low shrinkage fibre enhancing high-temperature nylon material and preparation method thereof can be used for complicated product |
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| US20130150490A1 (en) * | 2010-08-06 | 2013-06-13 | Henkel Ag & Co. Kgaa | Composite material containing natural fibers |
| CN104448803A (en) * | 2014-12-01 | 2015-03-25 | 贵州凯科特材料有限公司 | Halogen-free flame-retardant long-fiber-reinforced nylon 6 composite material and preparation method thereof |
| CN106046776A (en) * | 2016-06-23 | 2016-10-26 | 上海普利特复合材料股份有限公司 | High flow carbon fiber reinforced nylon composite material with fine surface and preparation method thereof |
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2016
- 2016-12-27 CN CN201611223225.9A patent/CN106675005A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130150490A1 (en) * | 2010-08-06 | 2013-06-13 | Henkel Ag & Co. Kgaa | Composite material containing natural fibers |
| CN102850785A (en) * | 2012-10-22 | 2013-01-02 | 株洲时代新材料科技股份有限公司 | Long-fiber-reinforced PA6 (polyamide 6) modified granules and preparation method thereof |
| CN104448803A (en) * | 2014-12-01 | 2015-03-25 | 贵州凯科特材料有限公司 | Halogen-free flame-retardant long-fiber-reinforced nylon 6 composite material and preparation method thereof |
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Non-Patent Citations (1)
| Title |
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| YOSUKE NISHITANI, ET AL: "Influence of silane coupling agents on the rheological behavior of hemp fiber filled polyamide 1010 biomass composites in molten state", 《AIP CONFERENCE PROCEEDINGS》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107141790A (en) * | 2017-06-14 | 2017-09-08 | 陈丽 | A kind of high strength composite and preparation method thereof |
| CN109096746A (en) * | 2018-08-22 | 2018-12-28 | 浙江新力新材料股份有限公司 | A kind of flaxen fiber enhancing nylon composite materials and preparation method thereof |
| CN109825067A (en) * | 2019-02-25 | 2019-05-31 | 浙江普利特新材料有限公司 | A kind of high flowing low shrinkage fibre enhancing high-temperature nylon material and preparation method thereof can be used for complicated product |
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Application publication date: 20170517 |