CN104725839A - Polyamide composite material and preparation method thereof - Google Patents
Polyamide composite material and preparation method thereof Download PDFInfo
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- 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
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- 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
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- C08L2205/00—Polymer mixtures characterised by other features
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Abstract
The invention relates to a polyamide composite material and a preparation method thereof. The polyamide composite material comprises the following raw materials in parts by weight: 60-90 parts of polyamide, 10-40 parts of polyethylene, 2-10 parts of a compatilizer, 0.1-10 parts of an antioxidizer, 20-40 parts of a filling agent, 1-1.5 parts of a coupling agent, and 0.1-2 parts of a lubricating agent, wherein the filling agent is a glass microsphere and alkali-free glass fibre. The polyamide composite material has better mechanical property and wear-resisting property.
Description
Technical field
The present invention relates to technical field of polymer materials, particularly relate to a kind of polyamide compoiste material and preparation method thereof.
Background technology
Polymeric amide (PA) has good erosion resistance, preferably thermotolerance, higher tensile strength and easy processing fluidity, in a lot of, progressively substitute traditional metallic substance.But limit its widespread use in tribological field because its shock resistance is low, water-intake rate is high, with the dry friction coefficient of toughened glass etc. is more high.And polyethylene has relatively low frictional coefficient, excellent self-lubricating property, low water-intake rate and excellent impelling strength, therefore, polymeric amide and polyethylene blend are prepared alloy material by people, but polyethylene also exists that surface hardness is low, abrasive wear resistance is poor and the not easily defect such as processing, existing polymeric amide and poly matrix material is made still to there is mechanical property and the poor problem of wear resisting property.
Summary of the invention
Given this, be necessary to provide a kind of mechanical property better and the good polyamide compoiste material of wear resisting property.
In addition, a kind of preparation method of polyamide compoiste material is also provided.
A kind of polyamide compoiste material, comprises following raw material according to mass fraction:
Wherein, described weighting agent is glass microballon and alkali free glass fibre.
Wherein in an embodiment, described polymeric amide is polyamide 6, and the relative viscosity of described polymeric amide is 2.4 ~ 2.8.
Wherein in an embodiment, the particle diameter of described glass microballon is 2 ~ 8 microns.
Wherein in an embodiment, the diameter of described alkali free glass fibre is 8 ~ 15 microns, and length-to-diameter ratio is 5 ~ 10.
Wherein in an embodiment, described poly number-average molecular weight is 200 ~ 5,000,000, and density is 0.936 ~ 0.946g/cm
3, described poly grain graininess is 50 ~ 100 orders.
Wherein in an embodiment, described compatilizer is maleic anhydride graft high density polyethylene(HDPE).
Wherein in an embodiment, described oxidation inhibitor is the mixture of antioxidant 1076 and irgasfos 168, oxidation inhibitor 1098 or antioxidant 1010.
Wherein in an embodiment, described coupling agent is silane coupling agent.
Wherein in an embodiment, described lubricant is ethylene bis stearamide or polyolefins graft copolymer.
A preparation method for polyamide compoiste material, comprises the steps:
Following raw material is taken: polyamide 60 ~ 90 part, polyethylene 10 ~ 40 parts, compatilizer 2 ~ 10 parts, 0.1 ~ 1 part, oxidation inhibitor, weighting agent 20 ~ 40 parts, coupling agent 1 ~ 1.5 part and lubricant 0.1 ~ 2 part according to mass fraction, wherein, described weighting agent is glass microballon and alkali free glass fibre;
By described polymeric amide, polyethylene, compatilizer, oxidation inhibitor, weighting agent, coupling agent and mix lubricant, obtain mixture;
Described mixture is extruded, obtains described polyamide compoiste material.
Above-mentioned polyamide compoiste material with polymeric amide and polyethylene for base material, and according to said ratio and compatilizer, oxidation inhibitor, weighting agent, coupling agent and mix lubricant, and weighting agent is glass microballon and alkali free glass fibre, the intermingling material of good mechanical performance can be obtained, due to glass microballon and alkali free glass fibre and organosilicon/polyamide 6 amine, the intermediate polarity difference of polyethylene base material is larger, consistency is very poor, and add coupling agent and can improve consistency between them, above-mentioned polyamide compoiste material is made to have good tensile strength, elongation at break, bending strength, composite bending modulus and notched Izod impact strength, namely there is good mechanical property, utilize the snappiness of polyethylene excellence, self lubricity simultaneously, other performance of nylon can also be improved while improving polymeric amide shock resistance, reducing water-intake rate, as reduced nylon frictional coefficient, improving material wear ability etc.
Accompanying drawing explanation
Fig. 1 is preparation method's schema of the polyamide compoiste material of an embodiment.
Embodiment
Mainly in conjunction with the drawings and the specific embodiments polyamide compoiste material and preparation method thereof is described in further detail below.
The polyamide compoiste material of one embodiment, comprises following raw material according to mass fraction:
Polymeric amide (PA), also known as nylon.
Preferably, polymeric amide is polyamide 6.Polyamide 6 is polycaprolactam again, has excellent wear resistance, self lubricity, thermotolerance and higher physical strength; And low-temperature performance is excellent, certainly to put out, oil resistant, chemical-resistant resistance, good springiness, shock strength is high, and alkali resistance is excellent, UV resistant and daylight.
Preferably, the relative viscosity of polymeric amide is 2.4 ~ 2.8.
Wherein, poly number-average molecular weight is 200 ~ 5,000,000; Density is 0.936 ~ 0.946g/cm
3; Poly grain graininess is 50 ~ 100 orders.
Wherein, compatilizer can impel polymeric amide and polyethylene to be combined as a whole.Preferably, compatilizer is maleic anhydride graft high density polyethylene(HDPE).Such as, the maleic anhydride graft high density polyethylene(HDPE) of Guangzhou Bai Chen macromolecular material company limited.Wherein, the percentage of grafting of maleic anhydride graft high density polyethylene(HDPE) maleic anhydride graft high density polyethylene(HDPE) is 0.5%, maleic anhydride graft high density polyethylene(HDPE) on high density polyethylene(HDPE) molecular chain, connects the several maleic anhydride molecule of skill by the means of chemical reaction, make it both have poly good workability and other excellent properties, what have again a maleic anhydride polar molecule can reactive and strong polarity again; Wherein, high density polyethylene(HDPE) is high, the nonpolar thermoplastic resin of a kind of degree of crystallinity, and high density polyethylene(HDPE) is white particle that is nontoxic, tasteless, odorless, and fusing point is about 130 DEG C, and relative density is 0.941 ~ 0.960.
Oxidation inhibitor is mixture, oxidation inhibitor 1098 or the antioxidant 1010 that antioxidant 1076 and irgasfos 168 form.
Weighting agent is glass microballon and alkali free glass fibre.Glass microballon and alkali free glass fibre composite strengthening can overcome cause due to the anisotropic of glass fibre itself when being used alone glass fibre shaping time flow orientation produce shrink of product and shaggy drawback, wherein, the mass ratio of glass microballon and alkali free glass fibre is 10 ~ 20:10 ~ 20; Be preferably, 1:1.
Glass microballon is round and smooth, and agglomeration between particles power is very little, can distribute preferably, in process engineering, be rolling resistance, can reduce the internal stress of resin with resin in resin.In order to reduce the internal stress of resin preferably, preferably, the particle diameter of glass microballon is 2 microns; The diameter of alkali free glass fibre is 8 ~ 15 microns, and length-to-diameter ratio is 5 ~ 10.
Coupling agent is silane coupling agent, such as, and the silane resin acceptor kh-550 of Japan XINYUE.
Lubricant is ethylene bis stearamide (EBS) or polyolefins graft copolymer; Be preferably polyolefins graft copolymer.
Wherein, polyolefins graft copolymer take polyolefine as backbone polymer, and and the graft copolymer that combines of grafted monomer.Polyolefins graft copolymer is preferably the maleic anhydride (POE-g-MAH) of polyethylene octene elastomer grafting.Because the maleic anhydride of polyethylene octene elastomer grafting and polymeric amide, polyvinyl resin at high temperature have good consistency, certain plastification can be produced, reduce intermolecular internal cohesive energy in resin, weaken intermolecular phase mutual friction, reduce resin melting viscosity, improve melt fluidity, promote the slip of resin particle.Such as, the maleic anhydride (POE-g-MAH) of polyethylene octene elastomer grafting can be the PA series of Kunshan Ya Yang matrix material Science and Technology Ltd., as PA-03, PA-003, PA-04 etc.
Above-mentioned polyamide compoiste material take polymeric amide as base material, and according to said ratio and compatilizer, oxidation inhibitor, weighting agent, coupling agent and mix lubricant, and weighting agent is glass microballon and alkali free glass fibre, above-mentioned polyamide compoiste material is made to have good tensile strength, flexural strength, bending elastic modulus, shock strength and hardness, namely there is good mechanical property, also there is good wear resisting property simultaneously.
As shown in Figure 1, the preparation method of the polyamide compoiste material of an embodiment, can be used for preparing above-mentioned polyamide compoiste material.The preparation method of above-mentioned polyamide compoiste material comprises the steps:
Step S110: take following raw material according to mass fraction: polyamide 60 ~ 90 part, polyethylene 10 ~ 40 parts, compatilizer 2 ~ 10 parts, 0.1 ~ 1 part, oxidation inhibitor, weighting agent 20 ~ 40 parts, coupling agent 1 ~ 1.5 part and lubricant 0.1 ~ 2 part.
Wherein, polymeric amide (PA), also known as nylon.Preferably, polymeric amide is polyamide 6.
Preferably, the relative viscosity of polymeric amide is 2.4 ~ 2.8.
Wherein, poly number-average molecular weight is 200 ~ 5,000,000; Density is 0.936 ~ 0.946g/cm
3; Poly grain graininess is 50 ~ 100 orders.
Compatilizer is maleic anhydride graft high density polyethylene(HDPE), such as, and the maleic anhydride graft high density polyethylene(HDPE) of Guangzhou Bai Chen macromolecular material company limited.
Oxidation inhibitor is the mixture of antioxidant 1076 and irgasfos 168, oxidation inhibitor 1098 or antioxidant 1010.
Weighting agent is glass microballon and alkali free glass fibre.Wherein, the mass ratio of glass microballon and alkali free glass fibre is 10 ~ 20:10 ~ 20; Be preferably, 15:15.
Preferably, the particle diameter of glass microballon is 2 microns; The diameter of alkali free glass fibre is 8 ~ 15 microns, and length-to-diameter ratio is 5 ~ 10.
Coupling agent is silane coupling agent, such as, and the silane resin acceptor kh-550 of Japan XINYUE.
Lubricant is ethylene bis stearamide or polyolefins graft copolymer; Be preferably polyolefins graft copolymer.
Polyolefins graft copolymer is preferably the maleic anhydride (POE-g-MAH) of polyethylene octene elastomer grafting, such as, can be the PA series of Kunshan Ya Yang matrix material Science and Technology Ltd., as PA-03, PA-003, PA-04 etc.
Step S120: by polymeric amide, polyethylene, compatilizer, oxidation inhibitor, weighting agent, coupling agent and mix lubricant, obtain mixture.
Concrete, polymeric amide, polyethylene, compatilizer, oxidation inhibitor, weighting agent, coupling agent and lubricant are dry mixed in mixing tank 10 ~ 12 hours and obtain mixture.
Preferably, by polymeric amide, polyethylene, compatilizer, oxidation inhibitor, weighting agent, coupling agent and mix lubricant, the step obtaining mixture is specially: first weighting agent and coupling agent are uniformly mixed in 65 ~ 85 DEG C, obtain pre-composition; Again by pre-composition and polymeric amide, polyethylene, compatilizer, oxidation inhibitor and mix lubricant, obtain mixture.Due to inorganic glass microballon and alkali free glass fibre and organosilicon/polyamide 6 amine 6, polyethylene base material is intermediate polarity differs larger, consistency is very poor, by first weighting agent (glass microballon and alkali free glass fibre) and coupling agent being pre-mixed, obtain pre-composition, consistency between the two can be improved, make mixing more even.
Wherein, by weighting agent and coupling agent, the stir speed (S.S.) in time being uniformly mixed for 65 ~ 85 DEG C is 1800 ~ 2800 revs/min.
Step S130: extruded by mixture, obtains polyamide compoiste material.
Wherein, device when extruding is twin screw extruder.Concrete, district's temperature of twin screw extruder is 220 DEG C, and two district's temperature are 225 DEG C, and three district's temperature are 230 DEG C, and four district's temperature are 240 DEG C, and five district's temperature are 230 DEG C.
The preparation method of above-mentioned polyamide compoiste material is simple to operate, is easy to suitability for industrialized production.
Be below specific embodiment part:
Embodiment 1
The preparation process of the polyamide compoiste material of the present embodiment is as follows:
(1) following raw material is taken according to mass fraction:
(2) be uniformly mixed alkali free glass fibre and glass microballon and silane resin acceptor kh-550 in 65 DEG C in the high-speed mixer of 1800 revs/min in rotating speed, obtain pre-composition; Pre-composition is mixed 12 minutes with polyamide 6, polyethylene, maleic anhydride graft high density polyethylene(HDPE), oxidation inhibitor 1098 and ethylene bis stearamide in super mixer, obtains mixture; Wherein, the diameter of alkali free glass fibre is 8 ~ 15 microns, and length-to-diameter ratio is 5 ~ 10, and the particle diameter of glass microballon is 2 microns; The relative viscosity of polyamide 6 is 2.4; Poly number-average molecular weight is 200, and density is 0.936g/cm
3, poly grain graininess is 50 orders.
(3) by mixture in twin screw extruder, and to arrange screw speed be 450 revs/min, the district's temperature arranging twin screw extruder is 220 DEG C, two district's temperature are 225 DEG C, three district's temperature are 230 DEG C, four district's temperature are 240 DEG C, and five district's temperature are 230 DEG C, obtain the polyamide compoiste material of the present embodiment.
The melting index of the polyamide compoiste material of the present embodiment is obtained according to the test of ASTMD1238 testing standard; Tensile strength and the elongation at break of the polyamide compoiste material of the present embodiment is obtained according to the test of ASTMD638 testing standard; Bending strength and the composite bending modulus of the polyamide compoiste material of the present embodiment is obtained according to the test of ASTMD790 testing standard; Notched Izod impact strength (1/8 ") of the polyamide compoiste material of the present embodiment is obtained according to the test of ASTMD256 testing standard; The thermal distorsion temperature of the polyamide compoiste material of the present embodiment is obtained according to the test of ASTMD648 testing standard; The anti-Taber Abrasion of the polyamide compoiste material of the present embodiment is obtained according to the test of ASTMD1894 testing standard; The frictional coefficient of the polyamide compoiste material of the present embodiment is obtained according to the test of SATM D 1894 testing standard.
(1/8 "), thermal distorsion temperature, anti-Taber Abrasion and frictional coefficient, in table 1 for the melting index of the polyamide compoiste material of the present embodiment, tensile strength, elongation at break, bending strength, composite bending modulus, notched Izod impact strength.
Embodiment 2
The preparation process of the polyamide compoiste material of the present embodiment is as follows:
(1) following raw material is taken according to mass fraction:
(2) be uniformly mixed alkali free glass fibre and glass microballon and silane resin acceptor kh-550 in 85 DEG C in the high-speed mixer of 2800 revs/min in rotating speed, obtain pre-composition; Pre-composition is mixed 10 ~ 12 minutes with polyamide 6, polyethylene, maleic anhydride graft high density polyethylene(HDPE), oxidation inhibitor 1098 and ethylene bis stearamide in super mixer, obtains mixture; Wherein, the diameter of alkali free glass fibre is 8 ~ 15 microns, and length-to-diameter ratio is 5 ~ 10, and the particle diameter of glass microballon is 2 microns; The relative viscosity of polyamide 6 is 2.8; Poly number-average molecular weight is 500, and density is 0.946g/cm
3, poly grain graininess is 100 orders.
(3) by mixture in twin screw extruder, and to arrange screw speed be 450 revs/min, the district's temperature arranging twin screw extruder is 220 DEG C, two district's temperature are 225 DEG C, three district's temperature are 230 DEG C, four district's temperature are 240 DEG C, and five district's temperature are 230 DEG C, obtain the polyamide compoiste material of the present embodiment.
Adopt the testing method that embodiment 1 is identical, obtain the melting index of the polyamide compoiste material of the present embodiment, tensile strength, elongation at break, bending strength, composite bending modulus, (1/8 "), thermal distorsion temperature, anti-Taber Abrasion and frictional coefficient, in table 1 for notched Izod impact strength.
Embodiment 3
The preparation process of the polyamide compoiste material of the present embodiment is as follows:
(1) following raw material is taken according to mass fraction:
(2) be uniformly mixed alkali free glass fibre and glass microballon and silane resin acceptor kh-550 in 70 DEG C in the high-speed mixer of 2500 revs/min in rotating speed, obtain pre-composition; Pre-composition is mixed 12 minutes with polyamide 6, polyethylene, maleic anhydride graft high density polyethylene(HDPE), oxidation inhibitor 1098 and ethylene bis stearamide in super mixer, obtains mixture; Wherein, the diameter of alkali free glass fibre is 8 ~ 15 microns, and length-to-diameter ratio is 5 ~ 10, and the particle diameter of glass microballon is 2 microns, and the relative viscosity of polyamide 6 is 2.6; Poly number-average molecular weight is 250, and density is 0.94g/cm
3, poly grain graininess is 80 orders.
(3) by mixture in twin screw extruder, and to arrange screw speed be 450 revs/min, the district's temperature arranging twin screw extruder is 220 DEG C, two district's temperature are 225 DEG C, three district's temperature are 230 DEG C, four district's temperature are 240 DEG C, and five district's temperature are 230 DEG C, obtain the polyamide compoiste material of the present embodiment.
Adopt the testing method that embodiment 1 is identical, obtain the melting index of the polyamide compoiste material of the present embodiment, tensile strength, elongation at break, bending strength, composite bending modulus, (1/8 "), thermal distorsion temperature, anti-Taber Abrasion and frictional coefficient, in table 1 for notched Izod impact strength.
Embodiment 4
The preparation process of the polyamide compoiste material of the present embodiment is as follows:
(1) following raw material is taken according to mass fraction:
(2) be uniformly mixed alkali free glass fibre and glass microballon and silane resin acceptor kh-550 in 65 DEG C in the high-speed mixer of 1800 revs/min in rotating speed, obtain pre-composition; Pre-composition is mixed 12 minutes with polyamide 6, polyethylene, maleic anhydride graft high density polyethylene(HDPE), antioxidant 1010 and polyolefins graft copolymer in super mixer, obtains mixture; Wherein, the diameter of alkali free glass fibre is 8 ~ 15 microns, and length-to-diameter ratio is 5 ~ 10, and the particle diameter of glass microballon is 2 microns; The relative viscosity of polyamide 6 is 2.4; Poly number-average molecular weight is 350, and density is 0.936g/cm
3, poly grain graininess is 50 orders.
(3) by mixture in twin screw extruder, and to arrange screw speed be 450 revs/min, the district's temperature arranging twin screw extruder is 220 DEG C, two district's temperature are 225 DEG C, three district's temperature are 230 DEG C, four district's temperature are 240 DEG C, and five district's temperature are 230 DEG C, obtain the polyamide compoiste material of the present embodiment.
Adopt the testing method that embodiment 1 is identical, obtain the melting index of the polyamide compoiste material of the present embodiment, tensile strength, elongation at break, bending strength, composite bending modulus, (1/8 "), thermal distorsion temperature, anti-Taber Abrasion and frictional coefficient, in table 1 for notched Izod impact strength.
Embodiment 5
The preparation process of the polyamide compoiste material of the present embodiment is as follows:
(1) following raw material is taken according to mass fraction:
(2) be uniformly mixed alkali free glass fibre and glass microballon and silane resin acceptor kh-550 in 65 DEG C in the high-speed mixer of 1800 revs/min in rotating speed, obtain pre-composition; Pre-composition is mixed 11 minutes with polyamide 6, polyethylene, maleic anhydride graft high density polyethylene(HDPE), antioxidant 1076, irgasfos 168 and polyolefins graft copolymer in super mixer, obtains mixture; Wherein, the diameter of alkali free glass fibre is 8 ~ 15 microns, and length-to-diameter ratio is 5 ~ 10, and the particle diameter of glass microballon is 2 microns; The relative viscosity of polyamide 6 is 2.4; Poly number-average molecular weight is 400, and density is 0.940g/cm
3, poly grain graininess is 90 orders.
(3) by mixture in twin screw extruder, and to arrange screw speed be 450 revs/min, the district's temperature arranging twin screw extruder is 220 DEG C, two district's temperature are 225 DEG C, three district's temperature are 230 DEG C, four district's temperature are 240 DEG C, and five district's temperature are 230 DEG C, obtain the polyamide compoiste material of the present embodiment.
Adopt the testing method that embodiment 1 is identical, obtain the melting index of the polyamide compoiste material of the present embodiment, tensile strength, elongation at break, bending strength, composite bending modulus, (1/8 "), thermal distorsion temperature, anti-Taber Abrasion and frictional coefficient, in table 1 for notched Izod impact strength.
Comparative example 1
The preparation process of the polyamide compoiste material of comparative example 1 is as follows:
(1) following raw material is taken according to mass fraction:
(2) polyamide 6, oxidation inhibitor 1098, alkali free glass fibre, glass microballon, silane resin acceptor kh-550 and ethylene bis stearamide are mixed 12 minutes in super mixer, obtain mixture; Wherein, the diameter of alkali free glass fibre is 8 ~ 15 microns, and length-to-diameter ratio is 5 ~ 10, and the particle diameter of glass microballon is 2 microns.
(3) by mixture in twin screw extruder, and to arrange screw speed be 450 revs/min, the district's temperature arranging twin screw extruder is 220 DEG C, two district's temperature are 225 DEG C, three district's temperature are 230 DEG C, four district's temperature are 240 DEG C, and five district's temperature are 230 DEG C, obtain the polyamide compoiste material of the present embodiment.
Adopt the testing method that embodiment 1 is identical, obtain the melting index of the polyamide compoiste material of comparative example 1, tensile strength, elongation at break, bending strength, composite bending modulus, (1/8 "), thermal distorsion temperature, anti-Taber Abrasion and frictional coefficient, in table 1 for notched Izod impact strength.
Comparative example 2
The preparation process of the polyamide compoiste material of comparative example 2 is as follows:
(1) following raw material is taken according to mass fraction:
(2) polyamide 6, polyethylene, oxidation inhibitor 1098, maleic anhydride graft high density polyethylene(HDPE) and ethylene bis stearamide are mixed 12 minutes in super mixer, obtain mixture.
(3) by mixture in twin screw extruder, and to arrange screw speed be 450 revs/min, the district's temperature arranging twin screw extruder is 220 DEG C, two district's temperature are 225 DEG C, three district's temperature are 230 DEG C, four district's temperature are 240 DEG C, and five district's temperature are 230 DEG C, obtain the polyamide compoiste material of the present embodiment.
Adopt the testing method that embodiment 1 is identical, obtain the melting index of the polyamide compoiste material of comparative example 2, tensile strength, elongation at break, bending strength, composite bending modulus, (1/8 "), thermal distorsion temperature, anti-Taber Abrasion and frictional coefficient, in table 1 for notched Izod impact strength.
The melting index of the polyamide compoiste material of the embodiment 1 ~ 5 that table 1 represents and comparative example 1 ~ 2, tensile strength, elongation at break, bending strength, composite bending modulus, notched Izod impact strength (1/8 "), thermal distorsion temperature, anti-Taber Abrasion and frictional coefficient.
Table 1
As can be seen from Table 1, the resistance to impact shock of the polyamide compoiste material of embodiment 1 ~ 5 is at least 12KJ/m
2, frictional coefficient mostly is 0.20 most, and anti-Taber Abrasion only has 2.8 at most, and the resistance to impact shock of comparative example 1 only has 15KJ/m
2, frictional coefficient is 0.38, anti-Taber Abrasion is 3.7, the polyamide compoiste material of obvious embodiment 1 ~ 5 has better resistance to impact shock and good wear resisting property relative to comparative example 1.
The melting index of the polyamide compoiste material of embodiment 1 ~ 5 can find: along with the increase of lubricant quantity, the melting index of system increases, from example 3 ~ 5, under identical lubricant quantity, the melting index adding polyolefins graft copolymer lubricant PA-03 system is larger, as can be seen here, the lubricant effect of polyolefins graft copolymer lubricant PA-03 is better than ethylene bis stearamide lubricant.
Simultaneously, the tensile strength of the polyamide compoiste material of embodiment 1 ~ embodiment 5, bending strength, composite bending modulus and notched Izod impact strength are apparently higher than comparative example 2, and frictional coefficient and anti-Taber Abrasion are starkly lower than comparative example 2, obviously, the polyamide compoiste material of embodiment 1 ~ 5 has better resistance to impact shock and good wear resisting property relative to comparative example 2.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some changes and improvements, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a polyamide compoiste material, is characterized in that, comprises following raw material according to mass fraction:
Wherein, described weighting agent is glass microballon and alkali free glass fibre.
2. polyamide compoiste material according to claim 1, is characterized in that, described polymeric amide is polyamide 6, and the relative viscosity of described polymeric amide is 2.4 ~ 2.8.
3. polyamide compoiste material according to claim 1, is characterized in that, the particle diameter of described glass microballon is 2 ~ 8 microns.
4. polyamide compoiste material according to claim 1, is characterized in that, the diameter of described alkali free glass fibre is 8 ~ 15 microns, and length-to-diameter ratio is 5 ~ 10.
5. polyamide compoiste material according to claim 1, is characterized in that, described poly number-average molecular weight is 100 ~ 5,000,000, and density is 0.936 ~ 0.946g/cm
3, described poly grain graininess is 50 ~ 100 orders.
6. polyamide compoiste material according to claim 1, is characterized in that, described compatilizer is maleic anhydride graft high density polyethylene(HDPE).
7. polyamide compoiste material according to claim 1, is characterized in that, described oxidation inhibitor is the mixture of antioxidant 1076 and irgasfos 168, oxidation inhibitor 1098 or antioxidant 1010.
8. polyamide compoiste material according to claim 1, is characterized in that, described coupling agent is silane coupling agent.
9. polyamide compoiste material according to claim 1, is characterized in that, described lubricant is ethylene bis stearamide or polyolefins graft copolymer.
10. a preparation method for polyamide compoiste material, is characterized in that, comprises the steps:
Following raw material is taken: polyamide 60 ~ 90 part, polyethylene 10 ~ 40 parts, compatilizer 2 ~ 10 parts, 0.1 ~ 1 part, oxidation inhibitor, weighting agent 20 ~ 40 parts, coupling agent 1 ~ 1.5 part and lubricant 0.1 ~ 2 part according to mass fraction, wherein, described weighting agent is glass microballon and alkali free glass fibre;
By described polymeric amide, polyethylene, compatilizer, oxidation inhibitor, weighting agent, coupling agent and mix lubricant, obtain mixture;
Described mixture is extruded, obtains described polyamide compoiste material.
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| CN111518396A (en) * | 2020-05-07 | 2020-08-11 | 李霞 | High-ductility and high-strength polyamide material and preparation method thereof |
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