CN103571184A - Nylon 6 molding composition, and preparation method and application thereof - Google Patents

Nylon 6 molding composition, and preparation method and application thereof Download PDF

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CN103571184A
CN103571184A CN201210270988.4A CN201210270988A CN103571184A CN 103571184 A CN103571184 A CN 103571184A CN 201210270988 A CN201210270988 A CN 201210270988A CN 103571184 A CN103571184 A CN 103571184A
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nylon
component
moulding compounds
toughness reinforcing
moulding
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CN103571184B (en
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丁超
谭麟
梁惠强
孙雅杰
蔡彤旻
陈大华
叶南飚
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Kingfa Science and Technology Co Ltd
Shanghai Kingfa Science and Technology Co Ltd
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Kingfa Science and Technology Co Ltd
Shanghai Kingfa Science and Technology Co Ltd
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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
    • 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
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • 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
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four 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
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/06—Properties of polyethylene
    • C08L2207/062—HDPE

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention discloses a nylon 6 molding composition, and a preparation method and application thereof. The composition comprises the following components: nylon 6 resin and a toughening component, wherein the toughening component comprises (A) unsaturated acid grafted polyolefin elastomer or unsaturated anhydride grafted polyolefin elastomer, and (B) polyolefin. The invention further discloses the preparation method and application of the nylon 6 molding composition. The nylon 6 molding composition has good rigidity while the flexibility is improved, and the cost is low.

Description

Nylon 6 moulding compounds, preparation method and application thereof
Technical field
The present invention relates to a kind of composition, relate in particular to a kind of moulding compound, preparation method and application thereof of nylon 6.
Background technology
The excellent characteristics such as that nylon 6 has is wear-resisting, oil resistant, shock-resistant, antifatigue, corrosion-resistant, self-lubricating property is good, frictional coefficient is little, apply very extensive.But there is dry state and the poor weakness of low temperature impact properties in common nylon 6, makes its Application Areas be subject to certain limitation.Available technology adopting elastomerics graft reaction group and Nylon 6 blend carry out tenacity increased nylon.But elastomerics and nylon 6 mixing, when improving toughness of material, also reduced the rigidity of material.
Summary of the invention
In sum, the present invention is necessary to provide a kind of toughened Nylon 6 moulding compound of high rigidity.
In addition, be also necessary to provide a kind of preparation method of above-mentioned toughened Nylon 6 moulding compound.
6 moulding compounds, comprise the component of following weight part:
Nylon 6: 70.0-85.0;
Toughness reinforcing component: 15.0-30.0;
Wherein, toughness reinforcing component comprises following component:
(A) unsaturated acid graft polyolefin elastomerics or unsaturated acid anhydride graft polyolefin elastomerics;
(B) polyolefine;
Wherein, (A) component is 1:4-7:3 with (B) weight ratio of component.
If no special instructions, described in following the present invention, POE is ethylene-octene copolymer.
Wherein, described Nylon 6 is 2.0-3.4 according to standard ISO 307 test relative viscosities, the Nylon 6 that preferably relative viscosity is 2.4-2.8.Nylon 6 relative viscosity is higher, and the toughness of toughened Nylon 6 moulding compound is corresponding higher, but the rising of Nylon 6 relative viscosity, its processing characteristics declines.Take into account mechanical property and processing characteristics, therefore, the Nylon 6 of preferred relative viscosity 2.4-2.8.
Wherein, described Nylon 6 is 70-80 weight part.
Wherein, described toughness reinforcing component is 15-25 weight part.
Wherein, described toughness reinforcing component (A) is (A1) acrylic acid-grafted ethylene-octene copolymer (POE-g-AA) and/or (A2) maleic anhydride grafted ethene-octene copolymer (POE-g-MAH).
Wherein, in described toughness reinforcing component (A), preferred maleic anhydride grafted ethene-octene copolymer (POE-g-MAH).
Wherein, in described toughness reinforcing component, (A) component is 2:3-3:2 with (B) weight ratio of component.
In described toughness reinforcing component, (A) percentage of grafting of the unsaturated acid in component or unsaturated acid anhydride is 0.5%-1.3%, and melt flow rate (MFR) is 0.5-2.0g/10min.Wherein, percentage of grafting adopts volumetry, with phenolphthalein, makes indicator, by acetic acid-xylene solution titration determination.Melt flow rate (MFR) is according to ASTM D1238 test, and test condition is at 190 ℃, to add load 2.16Kg.
Described polyolefine is crystalline polyvinyls, comprises ultrahigh molecular weight polyethylene(UHMWPE) (UHMWPE), high density polyethylene(HDPE) (HDPE), linear low density polyethylene (LLDPE) and Low Density Polyethylene (LDPE).Wherein, preferred HDPE or LLDPE or LDPE, further preferred HDPE.
Wherein, the processing aid that also comprises 0-0.6 weight part in described nylon 6 moulding compounds.
Described processing aid comprises at least one in oxidation inhibitor, lubricant and nucleator.
Described oxidation inhibitor is N, N '-1,6-dihexyl two (3,5-bis-(1,1-dimethyl ethyl)-4-hydroxyl) phenylpropyl alcohol acyl (general oxidation inhibitor 1098 by name), four (β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid) at least one in pentaerythritol ester (general antioxidant 1010 by name), three (2,4-di-tert-butyl-phenyl) phosphorous acid ester (general irgasfos 168 by name) or mantoquita composite antioxidant.Further preferred oxidation inhibitor 1098.
Described mantoquita composite antioxidant is comprised of the potassiumiodide of 50-90wt% and the cuprous iodide of 10-50wt%, or is comprised of the Potassium Bromide of 50-90wt% and the cuprous iodide of 10-50wt%.
Described lubricant is oxidized polyethlene wax, montanic acid wax, calcium stearate, aluminum stearate, silicone, N, N '-ethylene bis stearamide (EBS) or N, N '-ethylene bis stearamide grafts (TAF), further preferred montanic acid ester type waxes.
Described nucleator is inorganic nucleator and/or organic nucleating agent.The grain diameter of described inorganic nucleator is less than 1 μ m.
Described nucleator is at least one in talcum powder, polynite, calcium carbonate, Sodium Benzoate, sorbyl alcohol dibenzyl ester or carboxylic acid sodium salt.
The further preferably talc powder of described nucleator.
Wherein, described nylon 6 moulding compounds further comprise: the typical additives such as anti-UV agent, static inhibitor, tinting material.But its addition be no more than Nylon 6 and toughness reinforcing component weight and 0.5wt%, avoid affecting because of the interpolation of these typical additives the rigidity of nylon 6 moulding compounds.
6 moulding compounds, are comprised of the component of following weight part:
Nylon 6: 70.0-85.0;
Toughness reinforcing component: 15.0-30.0;
Wherein, toughness reinforcing component is composed of the following components:
(A) unsaturated acid graft polyolefin elastomerics or unsaturated acid anhydride graft polyolefin elastomerics;
(B) polyolefine;
Wherein, (A) component is 1:4-7:3 with (B) weight ratio of component.。
Separately, the present invention also provides a kind of preparation method of nylon 6 moulding compounds, comprises the following steps:
Nylon 6 and toughness reinforcing component mixed with high mixer or mixed with premixing machine, join in forcing machine, at 160-270 ℃, melt extruding granulation, preparing nylon 6 moulding compounds of high impact.
In the preparation method of nylon 6 moulding compounds of the present invention, due to (A) unsaturated acid graft polyolefin elastomerics or unsaturated acid anhydride graft polyolefin elastomerics and (B) polyolefinic acting in conjunction, nylon 6 moulding compounds that prepare have higher melt strength, therefore, nylon 6 moulding compounds that the present invention makes, except can be used for injection moulding, also can be used for extrusion moulding or blow molding.
The fields such as that a kind of described nylon 6 moulding compounds are applied to is electric, power tool, communications and transportation, automobile, machinery, instrument, building, aerospace and defence and military.
Compare prior art, nylon 6 moulding compounds of the present invention, add (A) unsaturated acid graft polyolefin elastomerics or unsaturated acid anhydride graft polyolefin elastomerics; And (B) polyolefin tenacity-increased, and (A) component is 1:4-7:3 with (B) weight ratio of component.Nylon 6, in toughness reinforcing, is also keeping higher rigidity, realized the rigidity-toughness balanced of toughened Nylon 6, and cost is lower.
Embodiment
Below in conjunction with some embodiments, nylon 6 moulding compounds of the present invention and preparation method thereof are described further.Specific embodiment is for further describing the present invention, non-limiting protection scope of the present invention.
The invention provides a kind of nylon 6 moulding compounds, comprise the component of following weight part:
Nylon 6: 70.0-85.0;
Toughness reinforcing component: 15.0-30.0;
Wherein, toughness reinforcing component comprises following component:
(A) unsaturated acid graft polyolefin elastomerics or unsaturated acid anhydride graft polyolefin elastomerics;
(B) polyolefine;
Wherein, (A) component is 1:4-7:3 with (B) weight ratio of component.
Wherein, described Nylon 6 is 2.0-3.4 according to standard ISO 307 test relative viscosities, the Nylon 6 that preferably relative viscosity is 2.4-2.8.
Wherein, described (A) component and (B) weight ratio of component are 1:4-7:3, further preferred 2:3-3:2.
Wherein, described toughness reinforcing component (A) is (A1) acrylic acid-grafted ethylene-octene copolymer (POE-g-AA) and/or (A2) maleic anhydride grafted ethene-octene copolymer (POE-g-MAH).
Described toughness reinforcing component (A) is (A2) POE-g-MAH preferably.
In described toughness reinforcing component, (A) percentage of grafting of the unsaturated acid in component or unsaturated acid anhydride is 0.5%-1.3%, and melt flow rate (MFR) is 0.5-2.0g/10min.Wherein, percentage of grafting adopts the phenolphthalein agent of giving instruction, by acetic acid-xylene solution titration determination.Melt flow rate (MFR) is according to ASTM D1238 test, and test condition is at 190 ℃, to add load 2.16Kg.
6 moulding compounds, are comprised of the component of following weight part:
Nylon 6: 70.0-85.0;
Toughness reinforcing component: 15.0-30.0;
Wherein, toughness reinforcing component is composed of the following components:
(A) unsaturated acid graft polyolefin elastomerics or unsaturated acid anhydride graft polyolefin elastomerics;
(B) polyolefine;
Wherein, (A) component is 1:4-7:3 with (B) weight ratio of component.
The present invention adds in forcing machine and melt extrudes granulation after Nylon 6 and toughness reinforcing component are mixed with high mixer or premixing machine, makes nylon 6 moulding compounds of the present invention, dryly by injection molding or extrusion moulding or blow molding, prepares finished product.
Mode with specific embodiment is illustrated below.The contamination of lubricant, nucleator and oxidation inhibitor is little to the performance impact of nylon 6 moulding compounds of the present invention, and following examples be take montanic acid ester type waxes, talcum powder, oxidation inhibitor 1098 as example is illustrated, and differs one for example.
In all embodiment provided by the invention, the starting material that provide all can obtain from market buying.Wherein, Nylon 6 is selected from the M2800 of Meida Nylon Co., Ltd., Xinhui, Guangdong, the M2400 of its relative viscosity Wei2.8，Huo Meida Nylon Co., Ltd., Xinhui, Guangdong, and its relative viscosity is 2.4.POE-g-MAH is selected from the Fusabond MN493D of DuPont company, and its melt flow rate (MFR) is 1.2g/10min, and the percentage of grafting of MAH is 0.8%.The HDPE trade mark is DMDA8008, and the trade mark of LDPE is LB7500N, and the trade mark of LLDPE is LL6101XR.Montanic acid ester type waxes is selected from Licowax E.Talcous particle diameter is 0.8 μ m; Starting material in all embodiment provided by the invention are weight part below.
Nylon 6 moulding compounds that the present invention prepares carry out following performance test according to standard system for batten: socle girder notched Izod impact strength: test by ISO180/1A, sample is of a size of 80 * 10 * 4mm 3, A type breach; Modulus in flexure: test by ISO178, sample is of a size of 80 * 10 * 4mm 3, test speed is 2mm/min.
Embodiment 1
After being mixed with high mixer, 80 parts of M2800,6 parts of DMDA8008,14 parts of MN493D, 1098,0.3 part of Licowax E of 0.1 part of oxidation inhibitor and 0.2 part of talcum powder add forcing machine, at 160-270 ℃, melt extrude granulation, prepare nylon 6 moulding compounds.
Described nylon 6 moulding compound performance tests: it is 53KJ/m that socle girder breach rushes intensity 2; Modulus in flexure is 1720MPa.
Embodiment 2
After being mixed with high mixer, 80 parts of M2800,8 parts of DMDA8008,12 parts of MN493D, 1098,0.3 part of Licowax E of 0.1 part of oxidation inhibitor and 0.2 part of talcum powder add forcing machine, at 160-270 ℃, melt extrude granulation, prepare nylon 6 moulding compounds.
Described nylon 6 moulding compound performance tests: it is 67.2KJ/m that socle girder breach rushes intensity 2; Modulus in flexure is 1770MPa.
Embodiment 3
After being mixed with high mixer, 80 parts of M2800,10 parts of DMDA8008,10 parts of MN493D, 1098,0.3 part of Licowax E of 0.1 part of oxidation inhibitor and 0.2 part of talcum powder add forcing machine, at 160-270 ℃, melt extrude granulation, prepare nylon 6 moulding compounds.
Described nylon 6 moulding compound performance tests: it is 72.8KJ/m that socle girder breach rushes intensity 2; Modulus in flexure is 1830MPa.
Embodiment 4
After being mixed with high mixer, 80 parts of M2800,12 parts of DMDA8008,8 parts of MN493D, 1098,0.3 part of Licowax E of 0.1 part of oxidation inhibitor and 0.2 part of talcum powder add forcing machine, at 160-270 ℃, melt extrude granulation, prepare nylon 6 moulding compounds.
Described nylon 6 moulding compound performance tests: it is 74.9KJ/m that socle girder breach rushes intensity 2; Modulus in flexure is 1880MPa.
Embodiment 5
After being mixed with high mixer, 80 parts of M2800,14 parts of DMDA8008,6 parts of MN493D, 1098,0.3 part of Licowax E of 0.1 part of oxidation inhibitor and 0.2 part of talcum powder add forcing machine, at 160-270 ℃, melt extrude granulation, prepare nylon 6 moulding compounds.
Described nylon 6 moulding compound performance tests: it is 26.7KJ/m that socle girder breach rushes intensity 2; Modulus in flexure is 1920MPa.
Embodiment 6
After being mixed with high mixer, 80 parts of M2800,16 parts of DMDA8008,4 parts of MN493D, 1098,0.3 part of Licowax E of 0.1 part of oxidation inhibitor and 0.2 part of talcum powder add forcing machine, at 160-270 ℃, melt extrude granulation, prepare nylon 6 moulding compounds.
Described nylon 6 moulding compound performance tests: it is 22.4KJ/m that socle girder breach rushes intensity 2; Modulus in flexure is 1980MPa.
Embodiment 7
After being mixed with high mixer, 85 parts of M2400,9 parts of DMDA8008,6 parts of MN493D, 1098,0.3 part of Licowax E of 0.1 part of oxidation inhibitor and 0.2 part of talcum powder add forcing machine, at 160-270 ℃, melt extrude granulation, prepare nylon 6 moulding compounds.
Described nylon 6 moulding compound performance tests: it is 39.8KJ/m that socle girder breach rushes intensity 2; Modulus in flexure is 2100MPa.
Embodiment 8
After being mixed with high mixer, 85 parts of M2400,6 parts of DMDA8008,9 parts of MN493D, 1098,0.3 part of Licowax E of 0.1 part of oxidation inhibitor and 0.2 part of talcum powder add forcing machine, at 160-270 ℃, melt extrude granulation, prepare nylon 6 moulding compounds.
Described nylon 6 moulding compound performance tests: it is 43.2KJ/m that socle girder breach rushes intensity 2; Modulus in flexure is 2040MPa.
Embodiment 9
After being mixed with high mixer, 70 parts of M2400,15 parts of DMDA8008,15 parts of MN493D, 1098,0.3 part of Licowax E of 0.1 part of oxidation inhibitor and 0.2 part of talcum powder add forcing machine, at 160-270 ℃, melt extrude granulation, prepare nylon 6 moulding compounds.
Described nylon 6 moulding compound performance tests: it is 82.4KJ/m that socle girder breach rushes intensity 2; Modulus in flexure is 1350MPa.
Embodiment 10
After being mixed with high mixer, 70 parts of M2400,12 parts of DMDA8008,18 parts of MN493D, 1098,0.3 part of Licowax E of 0.1 part of oxidation inhibitor and 0.2 part of talcum powder add forcing machine, at 160-270 ℃, melt extrude granulation, prepare nylon 6 moulding compounds.
Described nylon 6 moulding compound performance tests: it is 77.2KJ/m that socle girder breach rushes intensity 2; Modulus in flexure is 1540MPa.
Comparative example 1
After 80 parts of M2800,20 parts of MN493D, 1098,0.3 part of Licowax E of 0.1 part of oxidation inhibitor and 0.2 part of talcum powder are mixed with high mixer, add forcing machine, at 160-270 ℃, melt extrude granulation, prepare nylon 6 moulding compounds.
Described nylon 6 moulding compound performance tests: it is 39.8KJ/m that socle girder breach rushes intensity 2; Modulus in flexure is 1620MPa.
Comparative example 2
After 80 parts of M2800,20 parts of DMDA8008,1098,0.3 part of Licowax E of 0.1 part of oxidation inhibitor and 0.2 part of talcum powder are mixed with high mixer, add forcing machine, at 160-270 ℃, melt extrude granulation, prepare nylon 6 moulding compounds.
Described nylon 6 moulding compound performance tests: it is 4.7KJ/m that socle girder breach rushes intensity 2; Modulus in flexure is 2200MPa.
Comparative example 3
After 85 parts of M2400,15 parts of DMDA8008,1098,0.3 part of Licowax E of 0.1 part of oxidation inhibitor and 0.2 part of talcum powder are mixed with high mixer, add forcing machine, at 160-270 ℃, melt extrude granulation, prepare nylon 6 moulding compounds.
Described nylon 6 moulding compound performance tests: it is 4.8KJ/m that socle girder breach rushes intensity 2; Modulus in flexure is 2300MPa.
Comparative example 4
After 85 parts of M2400,15 parts of MN493D, 1098,0.3 part of Licowax E of 0.1 part of oxidation inhibitor and 0.2 part of talcum powder are mixed with high mixer, add forcing machine, at 160-270 ℃, melt extrude granulation, prepare nylon 6 moulding compounds.
Described nylon 6 moulding compound performance tests: it is 30.4KJ/m that socle girder breach rushes intensity 2; Modulus in flexure is 1840MPa.
Comparative example 5
After 70 parts of M2400,30 parts of MN493D, 1098,0.3 part of Licowax E of 0.1 part of oxidation inhibitor and 0.2 part of talcum powder are mixed with high mixer, add forcing machine, at 160-270 ℃, melt extrude granulation, prepare nylon 6 moulding compounds.
Described nylon 6 moulding compound performance tests: it is 53KJ/m that socle girder breach rushes intensity 2; Modulus in flexure is 1220MPa.
Comparative example 6
After 70 parts of M2400,30 parts of DMDA8008,1098,0.3 part of Licowax E of 0.1 part of oxidation inhibitor and 0.2 part of talcum powder are mixed with high mixer, add forcing machine, at 160-270 ℃, melt extrude granulation, prepare nylon 6 moulding compounds.
Described nylon 6 moulding compound performance tests: it is 5.0KJ/m that socle girder breach rushes intensity 2; Modulus in flexure is 1700MPa.
Following table 1 and table 2 are component and the performance comparison table of embodiment in the present invention and comparative example, and in following table 3 and table 4, embodiment 11-22 and embodiment 1-10 adopt same embodiment.
Table 1
? Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4 Embodiment 5 Embodiment 6 Comparative example 1 Comparative example 2
M2800 80 80 80 80 80 80 80 80
DMDA8008 6 8 10 12 14 16 0 20
MN493D 14 12 10 8 6 4 20 0
Oxidation inhibitor 1098 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1
Licowax E 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3
Talcum powder 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
Socle girder breach rushes intensity/KJm -2 53 67.2 72.8 74.9 40.7 32.5 39.8 4.7
Modulus in flexure/MPa 1720 1770 1830 1880 1920 1980 1620 2200
Table 2
? Embodiment 7 Embodiment 8 Embodiment 9 Embodiment 10 Comparative example 3 Comparative example 4 Comparative example 5 Comparative example 6
M2400 85 85 70 70 85 85 70 70
DMDA8008 9 6 15 12 15 0 0 30
MN493D 6 9 15 18 0 15 30 0
Oxidation inhibitor 1098 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1
Licowax E 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3
Talcum powder 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
Socle girder breach rushes intensity/KJm -2 39.8 43.2 82.4 77.2 4.8 30.4 53 5.0
Modulus in flexure/MPa 2100 2040 1350 1540 2300 1840 1220 1700
Table 3
Figure 335003DEST_PATH_IMAGE001
Table 4
Figure 2012102709884100002DEST_PATH_IMAGE003
The various embodiments described above all can make nylon 6 moulding compounds.From embodiment 1-15, can find out that toughness reinforcing component accounts for 15-30 weight part, and toughness reinforcing component and polyolefinic weight ratio be while being 1:4-7:3, the toughness of nylon 6 moulding compounds increases, and keeps certain rigidity.From embodiment 2-4, embodiment 7-18, can find out, especially, when toughness reinforcing component and polyolefinic weight ratio are between 2:3-3:2 time, when the toughness of material increases, keep relatively better rigidity, realize the rigidity-toughness balanced of elastomer toughened nylon 6.
The component concentration of the Nylon 6 of embodiment 1-6 is constant, the weight ratio of Nylon 6 and toughness reinforcing component is 80/20, along with the raising of HDPE content in toughness reinforcing component, the parameter socle girder notched Izod impact strength of exosyndrome material toughness first increases gradually as can be seen from Table 1, then declines; Along with the raising of HDPE content in toughness reinforcing component, the modulus in flexure of nylon 6 moulding compounds increases, and the rigidity of nylon 6 moulding compounds improves.Embodiment 1-6 and comparative example 1-2 contrast are known, POE-g-MAH and HDPE coordination plasticizing nylon 6, part HDPE replaces toughened Nylon 6 moulding compound prepared by POE-g-MAH and has higher modulus in flexure than only take nylon 6 moulding compounds that POE-g-MAH prepared as toughner, than only take nylon 6 moulding compounds that HDPE prepared as toughner, has stronger toughness.
Embodiment 7-8 and comparative example 3-4 contrast in table 2, embodiment 9-10 and comparative example 5-6 contrast, can find out nylon 6 moulding compounds prepared by HDPE and POE-g-MAH coordination plasticizing PA6, nylon 6 moulding compounds toughness reinforcing with POE-g-MAH are only compared to be had higher socle girder breach and rushes intensity and modulus in flexure.Explanation is compared with POE-g-MAH toughened Nylon 6, uses HDPE and POE-g-MAH coordination plasticizing nylon 6, when increasing nylon 6 moulding compound toughness, the rigidity of nylon 6 moulding compounds is also increased.
In table 4, in embodiment 16-22, the weight ratio of Nylon 6 and toughness reinforcing component is 77/30, and other components are identical.In embodiment 16-18, the weight ratio of POE-g-MAH and HDPE is between 1:4-7:3, especially between 2:3-3:2; In embodiment 19-20, the weight ratio of POE-g-MAH and HDPE is greater than 11:4; In embodiment 21-22, the weight ratio of POE-g-MAH and HDPE is less than 1:4.Embodiment 16-18 comparative example 19-20, can find out the good toughness of nylon 6 moulding compounds in embodiment 19-20, but rigidity is poor; Embodiment 16-18 comparative example 21-22, can find out that the rigidity of nylon 6 moulding compounds in embodiment 21-22 keeps better, but toughening effect is poor.Therefore, can find out that the weight ratio of working as POE-g-MAH and HDPE is between 1:4-7:3 from embodiment 16-18 comparative example 19-22, especially, between 2:3-3:2, nylon 6 moulding compounds, in toughness reinforcing, are also keeping higher rigidity.
Nylon 6 moulding compounds of the present invention, add (A) unsaturated acid graft polyolefin elastomerics or unsaturated acid anhydride graft polyolefin elastomerics and (B) polyolefin component is toughness reinforcing, and (A) component is 1:4-7:3 with (B) weight ratio of component, in toughened Nylon 6, keep the rigidity of nylon 6 also relatively better.Especially when (A) component is when (B) weight ratio of component is 2:3-3:2, when toughened Nylon 6 has higher toughness, also keeping higher rigidity.
Nylon 6 moulding compounds of the present invention can be applied to extremely wide field, as electric, power tool, communications and transportation, automobile, machinery, instrument, building, aerospace and defence and military.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes description of the present invention to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.

Claims (12)

1. nylon 6 moulding compounds, comprise the component of following weight part:
Nylon 6: 70.0-85.0;
Toughness reinforcing component: 15.0-30.0;
Wherein, toughness reinforcing component comprises following component:
(A) unsaturated acid graft polyolefin elastomerics or unsaturated acid anhydride graft polyolefin elastomerics;
(B) polyolefine;
Wherein, (A) component is 1:4-7:3 with (B) weight ratio of component.
2. nylon 6 moulding compounds, are comprised of the component of following weight part:
Nylon 6: 70.0-85.0;
Toughness reinforcing component: 15.0-30.0;
Wherein, toughness reinforcing component is composed of the following components:
(A) unsaturated acid graft polyolefin elastomerics or unsaturated acid anhydride graft polyolefin elastomerics;
(B) polyolefine;
Wherein, (A) component is 1:4-7:3 with (B) weight ratio of component.
3. nylon 6 moulding compounds as claimed in claim 1 or 2, is characterized in that: described toughness reinforcing component (A) is (A1) acrylic acid-grafted ethylene-octene copolymer and/or (A2) maleic anhydride grafted ethene-octene copolymer.
4. nylon 6 moulding compounds as claimed in claim 1 or 2, is characterized in that: in described toughness reinforcing component, (A) component is 2:3-3:2 with (B) weight ratio of component.
5. nylon 6 moulding compounds as claimed in claim 1 or 2, is characterized in that: described Nylon 6 is 2.0-3.4 according to the relative viscosity of standard ISO 307 tests.
6. nylon 6 moulding compounds as claimed in claim 5, is characterized in that: described Nylon 6 is 2.4-2.8 according to the relative viscosity of standard ISO 307 tests.
7. nylon 6 moulding compounds as claimed in claim 1 or 2, is characterized in that: described Nylon 6 is 70.0-80.0 weight part, and described toughness reinforcing component is 15.0-25.0 weight part.
8. nylon 6 moulding compounds as claimed in claim 1 or 2, is characterized in that: described polyolefine is at least one in ultrahigh molecular weight polyethylene(UHMWPE), high density polyethylene(HDPE), linear low density polyethylene and Low Density Polyethylene.
9. nylon 6 moulding compounds as claimed in claim 1 or 2, is characterized in that: the unsaturated acid in described toughness reinforcing component in (A) component or the percentage of grafting of unsaturated acid anhydride are 0.5%-1.3%, and melt flow rate (MFR) is 0.5-2.0g/10min; Wherein, described percentage of grafting adopts volumetry, with phenolphthalein, makes indicator, by acetic acid-xylene solution titration determination; Melt flow rate (MFR) is according to ASTM D1238 test, and test condition is at 190 ℃, to add load 2.16Kg.
10. nylon 6 moulding compounds as claimed in claim 1, is characterized in that: in described nylon 6 moulding compounds, also comprise the processing aid of 0-0.6 weight part, described processing aid comprises at least one in oxidation inhibitor, lubricant and nucleator.
11. 1 kinds of preparation methods that prepare nylon 6 moulding compounds described in claim 1-10 any one, comprise the following steps:
Nylon 6 and toughness reinforcing component are mixed with high mixer or premixing machine, join in forcing machine, at 160-270 ℃, melt extrude granulation, prepare nylon 6 moulding compounds of high impact.
The application of 12. 1 kinds of nylon 6 moulding compounds as described in claim 1-10 any one, is characterized in that: described nylon 6 moulding compounds are applied to electric, power tool, communications and transportation, automobile, machinery, instrument, building, aerospace and defence and military field.
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Publication number Priority date Publication date Assignee Title
CN1445278A (en) * 2003-04-10 2003-10-01 上海交通大学 Super malleable nylon and its preparing method
CN101402793A (en) * 2008-11-10 2009-04-08 上海金发科技发展有限公司 Glass fiber-reinforced nylon 6-poly-p-benzene dicarboxylic acid butanediol ester alloy material and method of producing the same
CN101550271A (en) * 2008-04-03 2009-10-07 惠州市华聚塑化科技有限公司 Super toughness nylon resin and method for preparing same
CN102051043A (en) * 2009-10-30 2011-05-11 上海金发科技发展有限公司 High wear-resistant and cold-resistant toughened nylon composite material

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1445278A (en) * 2003-04-10 2003-10-01 上海交通大学 Super malleable nylon and its preparing method
CN101550271A (en) * 2008-04-03 2009-10-07 惠州市华聚塑化科技有限公司 Super toughness nylon resin and method for preparing same
CN101402793A (en) * 2008-11-10 2009-04-08 上海金发科技发展有限公司 Glass fiber-reinforced nylon 6-poly-p-benzene dicarboxylic acid butanediol ester alloy material and method of producing the same
CN102051043A (en) * 2009-10-30 2011-05-11 上海金发科技发展有限公司 High wear-resistant and cold-resistant toughened nylon composite material

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