CN101775208B - Composite material for preparing stringing pulley and preparation method thereof - Google Patents
Composite material for preparing stringing pulley and preparation method thereof Download PDFInfo
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- CN101775208B CN101775208B CN 200910243714 CN200910243714A CN101775208B CN 101775208 B CN101775208 B CN 101775208B CN 200910243714 CN200910243714 CN 200910243714 CN 200910243714 A CN200910243714 A CN 200910243714A CN 101775208 B CN101775208 B CN 101775208B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 85
- 239000002131 composite material Substances 0.000 title abstract 5
- 229920001778 nylon Polymers 0.000 claims abstract description 79
- 239000004677 Nylon Substances 0.000 claims abstract description 78
- 229920001971 elastomer Polymers 0.000 claims abstract description 73
- 229920001897 terpolymer Polymers 0.000 claims abstract description 51
- 239000000835 fiber Substances 0.000 claims abstract description 29
- 239000003365 glass fiber Substances 0.000 claims abstract description 23
- 229920002748 Basalt fiber Polymers 0.000 claims abstract description 4
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 4
- 229920000271 Kevlar® Polymers 0.000 claims abstract description 4
- 239000004917 carbon fiber Substances 0.000 claims abstract description 4
- 239000004761 kevlar Substances 0.000 claims abstract description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims abstract description 4
- 239000011159 matrix material Substances 0.000 claims description 96
- 238000012986 modification Methods 0.000 claims description 31
- 230000004048 modification Effects 0.000 claims description 31
- 239000007822 coupling agent Substances 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 6
- 238000010276 construction Methods 0.000 abstract description 30
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 239000012783 reinforcing fiber Substances 0.000 abstract 2
- 238000005452 bending Methods 0.000 abstract 1
- 239000000806 elastomer Substances 0.000 abstract 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 abstract 1
- 239000002657 fibrous material Substances 0.000 abstract 1
- 125000000524 functional group Chemical group 0.000 abstract 1
- 239000004615 ingredient Substances 0.000 abstract 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 18
- 238000001746 injection moulding Methods 0.000 description 16
- 239000000203 mixture Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- 239000012745 toughening agent Substances 0.000 description 8
- 230000006872 improvement Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The invention relates to a composite material for preparing stringing pulleys and a preparation method thereof. The composite material contains the following ingredients in percent by weight: 67-84 percent of nylon, 66.6-30 percent of reinforcing fiber and 3-10 percent of flexibilizer, wherein the reinforcing fiber is one or more kinds of the following fiber materials in any proportion: chopped glass fiber, Kevlar fiber, basalt fiber, carbon fiber and ultra-high modulus polyethylene fiber. The flexibilizer is ethylene propylene terpolymer ultra-thin elastomer with active functional groups. The composite material for preparing stringing pulleys has the advantages of high toughness, wear resistance, tensile strength, bending strength and the like. The stringing pulley prepared from the composite material in an embodiment has long service life and lowered damage rate, and can be applied to transmission and substation constructions in upland and marsh areas with transportation difficulties.
Description
Technical field
The present invention relates to modification and preparation field for the releasing pulley material, specifically relate to a kind of matrix material for releasing pulley and preparation method thereof.
Background technology
MC nylon is the material for the preparation of releasing pulley; And releasing pulley is the requisite important tool of power transmission and transformation tension stringing.That MC nylon releasing pulley has is wear-resisting, anticorrosion, self-lubricating, insulation and lightweight characteristics, is the most general releasing pulley of current domestic application; Yet still there are some shortcomings in the MC nylon material because molecular structure property own determines it: during as low temperature, toughness is poor, the wear resistance of using under high loading, and the performances such as tensile strength and flexural strength be not very good; Therefore, by the MC nylon, standby releasing pulley often because be subject to larger continuous load, makes coaster be easy to be subject to larger damage in the tension stringing process.
Summary of the invention
The object of the present invention is to provide a kind of matrix material for the preparation of releasing pulley, the above-mentioned defect existed to solve prior art, the characteristics of the excellent propertys such as the matrix material for the preparation of releasing pulley of the present invention has that toughness is strong, wear-resisting, tensile strength and flexural strength.
Another object of the present invention is to provide a kind of preparation method of the matrix material for the preparation of releasing pulley.
A kind of matrix material for the preparation of releasing pulley of the present invention, with 60%～90% nylon 66,6%～30% fortifying fibre and the preparation of 3%～10% toughner by weight percentage.
A kind of matrix material for the preparation of releasing pulley of the present invention, with 67%～87% nylon 66,8%～25% fortifying fibre and the preparation of 5%～8% toughner by weight percentage.
A kind of matrix material for the preparation of releasing pulley of the present invention, with 70%～83% nylon 66,10%～21% fortifying fibre and the preparation of 6%～9% toughner by weight percentage.
A kind of matrix material for the preparation of releasing pulley of the present invention, with 75%～80% nylon 66,17%～20% fortifying fibre and the preparation of 3%～6% toughner by weight percentage.
One or more in the filamentary material of the following arbitrary proportion of described fortifying fibre selection:
Short glass fiber, kevlar fiber, basalt fibre, carbon fiber and ultra high modulus polyethylene fibre.
Toughner is the ultra-fine elastomerics of terpolymer EP rubber that contains active function groups.
Matrix material for the preparation of releasing pulley of the present invention can improve the mechanical property of nylon 66; In addition, adopt the ultra-fine elastic body toughening agent of terpolymer EP rubber that contains active function groups to improve processing to the interface of glass fibre/nylon 66: this toughner can be at the interface formation active group of glass fibre/nylon 66.
The combination of said components and percentage range, by great many of experiments, determine, and the characteristics of the excellent property such as aforesaid combination and percentage range make that the matrix material for releasing pulley of the present invention has that toughness is strong, wear-resisting, tensile strength and flexural strength; And, the releasing pulley that the present embodiment adopts said components and weight ratio to prepare with traditional MC nylon releasing pulley, compare there is lightweight, long service life, characteristics that spoilage is low.
The preparation method of a kind of matrix material for the preparation of releasing pulley of the present invention, comprise the steps:
A), the coupling agent KH550 of 1%～3% percent by weight is mixed with terpolymer EP rubber, make the terpolymer EP rubber modification;
B), modified rubber that step a) is obtained pulverized, and must contain the ultra-fine elastomerics of terpolymer EP rubber of active function groups;
C), by 60%～90% nylon 66,6%～30% short glass fiber and step b) the ultra-fine elastomerics 3%～10% of the terpolymer EP rubber that contains active function groups that obtains is mixed and modified, obtains the product matrix material.
In above-mentioned preparation method, step a) described in 1%～3% percent by weight be the weight ratio that coupling agent accounts for terpolymer EP rubber; Described mixing equipment is two roller mills; Also can select has other mixing equipment of same function to realize modification with two roller mills.
Step c) mixing equipment described in is twin screw extruder; Twin screw extruder is extruded modification, is not limited in and extrudes modification, and also can select has other mixing equipment of same function to realize modification with twin screw extruder.
Mixed and modified in two roller mills, and mixed and modified in twin screw extruder what all adopt is that the conventional or known technology in this area realizes.
Glass fibre, toughner, nylon 66 mix while being extruded modification simultaneously, chemical bonding can occur with the end amino of glass fibre and nylon 66 in the active group in toughner, thereby improved the interface bonding of glass fibre and nylon 66, improved the interface compatibility of nylon 66 and glass fibre.
A kind of matrix material for the preparation of releasing pulley of the present invention, matrix material preferably, with 80% nylon 66,15% fortifying fibre and 5% toughner of percentage meter are prepared from by weight.
The present invention compared with prior art, has following beneficial effect:
1. the present invention adopts the usage ratio of controlling glass fibre, toughner, nylon 66, by extrusion modification, obtain the matrix material for the preparation of releasing pulley, and the gained matrix material has embodied its over-all properties adjustable characteristics to a certain extent.
2. the indices of the matrix material for the preparation of releasing pulley of the present invention obviously is better than traditional MC nylon.
Tensile strength for the preparation of the matrix material of releasing pulley can be controlled at 115～130Mpa scope, and flexural strength can be controlled at 160～180Mpa scope, and the simply supported beam notched Izod impact strength can be controlled at 10～14J/cm
2scope ,-40 ℃ of simply supported beam notched Izod impact strength can be controlled at 8～11J/cm
2scope, heat-drawn wire can be controlled at 150～175 ℃ of scopes.
And quality product traditional MC properties of nylons is as follows preferably:
The tensile strength of tradition MC nylon is in 85～95Mpa scope, and flexural strength is in 95～110Mpa scope, and the simply supported beam notched Izod impact strength is at 9～12J/cm
2scope ,-40 ℃ of simply supported beam notched Izod impact strength are at 7～11J/cm
2scope.
3. the matrix material for the preparation of releasing pulley of the present invention has that mechanical property is strong, good toughness, intensity are high, wear-resisting, excellent property and the simple characteristics of preparation technology.
The accompanying drawing explanation
Fig. 1 is: the structural representation of the releasing pulley that adopts above-mentioned matrix material to prepare in embodiment;
Fig. 2 is: the spoke section structure schematic diagram of the releasing pulley that adopts above-mentioned matrix material to prepare in embodiment;
In figure: 1, coaster wheel rim, 2, the wheel shaft of running in bearings, 3, spoke;
Embodiment
Below by embodiment, technical scheme of the present invention is described in further detail.
Embodiment 1:
The matrix material for the preparation of releasing pulley of the present embodiment, with 80% nylon 66,15% fortifying fibre and the preparation of 5% toughner of percentage meter by weight.
The present embodiment, for the preparation of the preparation method of the matrix material of releasing pulley, comprises the steps:
A), in two roller mills, 1% coupling agent KH550 is sneaked in terpolymer EP rubber, realize coupling agent KH550 modified EPT rubber;
B), gained rubber adds in pulverizer after modification that step a) is obtained, pulverize and form the ultra-fine elastomerics of terpolymer EP rubber that contains active function groups;
C), by 80% nylon 66,15% short glass fiber and step b) the ultra-fine elastomerics 5% of the terpolymer EP rubber that contains active function groups that obtains, mix and add in twin screw extruder, extrude modification by twin screw extruder and obtain the product matrix material.
The tensile strength of the matrix material obtained is 125Mpa, and flexural strength is 176MPa, and the simply supported beam notched Izod impact strength is 11.2J/cm
2,-40 ℃ of simply supported beam notched Izod impact strength are 9.2J/cm
2, heat-drawn wire is 175 ℃.
The tensile strength of matrix material improves 15% than pure MC nylon, and flexural strength improves 25%; Add with after the ultra-fine elastic body toughening agent of the terpolymer EP rubber of active function groups, the Toughness Ratio nylon 66 of matrix material has clear improvement, and slightly is better than the toughness of superior in quality MC nylon.
The present embodiment prepares releasing pulley by injection molding process, and its structure is as Fig. 1, shown in Fig. 2: 1, coaster wheel rim, and 2, the wheel shaft of running in bearings, 3, spoke, three's thickness is compared with the corresponding construction of MC nylon releasing pulley, and attenuate is in various degree all arranged; Releasing pulley weight ratio MC nylon releasing pulley weight saving 25% prepared by the present embodiment; Releasing pulley prepared by the present embodiment is light, and long service life and spoilage are low, superior in quality, can well be applied to transport the Substation construction that send of difficult high mountain and marsh land.
Embodiment 2:
The matrix material for the preparation of releasing pulley of the present embodiment, with 84% nylon 66,10% fortifying fibre and the preparation of 6% toughner of percentage meter by weight.
The present embodiment, for the preparation of the preparation method of the matrix material of releasing pulley, comprises the steps:
A), in two roller mills, 1.5% coupling agent KH550 is sneaked in terpolymer EP rubber, realize coupling agent KH550 modified EPT rubber;
B), gained rubber adds in pulverizer after modification that step a) is obtained, pulverize and form the ultra-fine elastomerics of terpolymer EP rubber that contains active function groups;
C), by 84% nylon 66,10% short glass fiber and step b) the ultra-fine elastomerics 6% of the terpolymer EP rubber that contains active function groups that obtains, mix and add in twin screw extruder, extrude modification by twin screw extruder and obtain the matrix material for the preparation of releasing pulley.
The tensile strength of the matrix material that the present embodiment obtains is 115Mpa, and flexural strength is 168MPa, and the simply supported beam notched Izod impact strength is 14J/cm
2,-40 ℃ of simply supported beam notched Izod impact strength are 10.5J/cm
2, heat-drawn wire is 160 ℃.
The tensile strength of the matrix material that the present embodiment obtains improves 5% than pure MC nylon, and flexural strength improves 15%, toughness also be improved significantly, obviously be better than the toughness of MC nylon.
The one-piece construction schematic diagram of the releasing pulley that the present embodiment adopts above-mentioned matrix material to prepare by injection molding process and the structural representation of spoke section are identical with embodiment 1 figure.
As shown in Figure 1 and Figure 2: 1, coaster wheel rim, 2, the wheel shaft of running in bearings, 3, spoke, three's thickness is compared with the corresponding construction of MC nylon releasing pulley, attenuate is in various degree all arranged, nylon 66 releasing pulley weight ratio MC nylon releasing pulley weight savings 20%.
The releasing pulley performance that anti-foreign matter impacts in construction process of embodiment 2 preparation be improved significantly, spoilage also obviously descends.
Embodiment 3:
The matrix material for the preparation of releasing pulley of the present embodiment, with 60% nylon 66,30% fortifying fibre and the preparation of 10% toughner of percentage meter by weight.
The present embodiment, for the preparation of the preparation method of the matrix material of releasing pulley, comprises the steps:
A), in two roller mills, 2% coupling agent KH550 is sneaked in terpolymer EP rubber, realize coupling agent KH550 modified EPT rubber;
B), gained rubber adds in pulverizer after modification that step a) is obtained, pulverize and form the ultra-fine elastomerics of terpolymer EP rubber that contains active function groups;
C), by 60% nylon 66,30% short glass fiber and step b) the ultra-fine elastomerics 10% of the terpolymer EP rubber that contains active function groups that obtains, mix and add in twin screw extruder, extrude modification by twin screw extruder and obtain the matrix material for the preparation of releasing pulley.
The tensile strength of the matrix material obtained is 126Mpa, and flexural strength is 169MPa, and the simply supported beam notched Izod impact strength is 12.8J/cm
2,-40 ℃ of simply supported beam notched Izod impact strength are 9.2J/cm
2, heat-drawn wire is 155 ℃.
The tensile strength of matrix material improves 5% than pure MC nylon, and flexural strength improves 10%, toughness also be improved significantly, obviously be better than the toughness of MC nylon.
The one-piece construction schematic diagram of the releasing pulley that the present embodiment adopts above-mentioned matrix material to prepare by injection molding process and the structural representation of spoke section are identical with embodiment 1 figure.
As shown in Figure 1 and Figure 2: 1, coaster wheel rim, 2, the wheel shaft of running in bearings, 3, spoke, three's thickness is compared with the corresponding construction of MC nylon releasing pulley, attenuate is in various degree all arranged, nylon 66 releasing pulley weight ratio MC nylon releasing pulley weight savings 19.2%.
Releasing pulley prepared by the present embodiment performance that anti-foreign matter impacts in construction process be improved significantly, spoilage also obviously descends.
Embodiment 4:
The matrix material for the preparation of releasing pulley of the present embodiment, with 67% nylon 66,25% fortifying fibre and the preparation of 8% toughner of percentage meter by weight.
The present embodiment, for the preparation of the preparation method of the matrix material of releasing pulley, comprises the steps:
A), in two roller mills, 1.8% coupling agent KH550 is sneaked in terpolymer EP rubber, realize coupling agent KH550 modified EPT rubber;
B), gained rubber adds in pulverizer after modification that step a) is obtained, pulverize and form the ultra-fine elastomerics of terpolymer EP rubber that contains active function groups;
C), by 67% nylon 66,25% short glass fiber and step b) the ultra-fine elastomerics 8% of the terpolymer EP rubber that contains active function groups that obtains, mix and add in twin screw extruder, extrude modification by twin screw extruder and obtain the matrix material for the preparation of releasing pulley.
The tensile strength of the matrix material obtained is 119Mpa, and flexural strength is 175MPa, and the simply supported beam notched Izod impact strength is 13.1J/cm
2,-40 ℃ of simply supported beam notched Izod impact strength are 9.6J/cm
2, heat-drawn wire is 167 ℃.Tensile strength improves 8% than pure MC nylon, and flexural strength improves 11%, toughness also be improved significantly, obviously be better than the toughness of MC nylon.
The one-piece construction schematic diagram of releasing pulley prepared above-mentioned matrix material by injection molding process by the present embodiment and the structural representation of spoke section are identical with embodiment 1 figure.
As shown in Figure 1 and Figure 2: 1, coaster wheel rim, 2, the wheel shaft of running in bearings, 3, spoke, three's thickness is compared with the corresponding construction of MC nylon releasing pulley, attenuate is in various degree all arranged, nylon 66 releasing pulley weight ratio MC nylon releasing pulley weight savings 20%.
Releasing pulley prepared by the present embodiment performance that anti-foreign matter impacts in construction process significantly improves, and spoilage also obviously descends.
Embodiment 5:
The matrix material for the preparation of releasing pulley of the present embodiment, with 70% nylon 66,21% fortifying fibre and the preparation of 9% toughner of percentage meter by weight.
The present embodiment, for the preparation of the preparation method of the matrix material of releasing pulley, comprises the steps:
A), in two roller mills, 1.8% coupling agent KH550 is sneaked in terpolymer EP rubber, realize coupling agent KH550 modified EPT rubber;
B), gained rubber adds in pulverizer after modification that step a) is obtained, pulverize and form the ultra-fine elastomerics of terpolymer EP rubber that contains active function groups;
C), by 70% nylon 66,21% short glass fiber and step b) the ultra-fine elastomerics 9% of the terpolymer EP rubber that contains active function groups that obtains, mix and add in twin screw extruder, extrude modification by twin screw extruder and obtain the matrix material for the preparation of releasing pulley.
The tensile strength of the matrix material obtained is 130Mpa, and flexural strength is 162MPa, and the simply supported beam notched Izod impact strength is 13.7J/cm
2,-40 ℃ of simply supported beam notched Izod impact strength are 10.6J/cm
2, heat-drawn wire is 170 ℃.
The tensile strength of matrix material improves 17% than pure MC nylon, and flexural strength improves 21%; Add with after the ultra-fine elastic body toughening agent of the terpolymer EP rubber of active function groups, the Toughness Ratio nylon 66 of matrix material has clear improvement, and slightly is better than the toughness of superior in quality MC nylon.
The present embodiment adopts above-mentioned matrix material, and the one-piece construction schematic diagram of the releasing pulley prepared by injection molding process and the structural representation of spoke section are identical with embodiment 1 figure.
The present embodiment prepares releasing pulley by injection molding process, and its structure is as Fig. 1, shown in Fig. 2: 1, coaster wheel rim, and 2, the wheel shaft of running in bearings, 3, spoke, three's thickness is compared with the corresponding construction of MC nylon releasing pulley, and attenuate is in various degree all arranged; Releasing pulley weight ratio MC nylon releasing pulley weight saving 16% prepared by the present embodiment; Releasing pulley prepared by the present embodiment is light, and long service life and spoilage are low, superior in quality, can well be applied to transport the Substation construction that send of difficult high mountain and marsh land.
Embodiment 6:
The matrix material for the preparation of releasing pulley of the present embodiment, with 75% nylon 66,20% fortifying fibre and the preparation of 5% toughner of percentage meter by weight.
The present embodiment, for the preparation of the preparation method of the matrix material of releasing pulley, comprises the steps:
A), in two roller mills, 1% coupling agent KH550 is sneaked in terpolymer EP rubber, realize coupling agent KH550 modified EPT rubber;
B), gained rubber adds in pulverizer after modification that step a) is obtained, pulverize and form the ultra-fine elastomerics of terpolymer EP rubber that contains active function groups;
C), by 75% nylon 66,20% short glass fiber and step b) the ultra-fine elastomerics 5% of the terpolymer EP rubber that contains active function groups that obtains, mix and add in twin screw extruder, extrude modification by twin screw extruder and obtain the matrix material for the preparation of releasing pulley.
The tensile strength of the matrix material obtained is 128Mpa, and flexural strength is 166MPa, and the simply supported beam notched Izod impact strength is 10.3J/cm
2,-40 ℃ of simply supported beam notched Izod impact strength are 9.7J/cm
2, heat-drawn wire is 169 ℃.
The tensile strength of matrix material improves 11% than pure MC nylon, and flexural strength improves 17%; Add with after the ultra-fine elastic body toughening agent of the terpolymer EP rubber of active function groups, the Toughness Ratio nylon 66 of matrix material has clear improvement, and slightly is better than the toughness of superior in quality MC nylon.
The one-piece construction schematic diagram of the releasing pulley that the present embodiment adopts above-mentioned matrix material to prepare by injection molding process and the structural representation of spoke section are identical with embodiment 1 figure.
The present embodiment prepares releasing pulley by injection molding process, and its structure is as Fig. 1, shown in Fig. 2: 1, coaster wheel rim, and 2, the wheel shaft of running in bearings, 3, spoke, three's thickness is compared with the corresponding construction of MC nylon releasing pulley, and attenuate is in various degree all arranged; Releasing pulley weight ratio MC nylon releasing pulley weight saving 17% prepared by the present embodiment; Releasing pulley prepared by the present embodiment is light, and long service life and spoilage are low, superior in quality, can well be applied to transport the Substation construction that send of difficult high mountain and marsh land.
Embodiment 7
The matrix material for the preparation of releasing pulley of the present embodiment, with 83% nylon 66,10% fortifying fibre and the preparation of 7% toughner of percentage meter by weight.
The present embodiment, for the preparation of the preparation method of the matrix material of releasing pulley, comprises the steps:
A), in two roller mills, 1.4% coupling agent KH550 is sneaked in terpolymer EP rubber, realize coupling agent KH550 modified EPT rubber;
B), gained rubber adds in pulverizer after modification that step a) is obtained, pulverize and form the ultra-fine elastomerics of terpolymer EP rubber that contains active function groups;
C), by 83% nylon 66,10% short glass fiber and step b) the ultra-fine elastomerics 7% of the terpolymer EP rubber that contains active function groups that obtains, mix and add in twin screw extruder, extrude modification by twin screw extruder and obtain the matrix material for the preparation of releasing pulley.
The tensile strength of the matrix material obtained is 121Mpa, and flexural strength is 177MPa, and the simply supported beam notched Izod impact strength is 13.7J/cm
2,-40 ℃ of simply supported beam notched Izod impact strength are 8.8J/cm
2, heat-drawn wire is 157 ℃.
The tensile strength of matrix material improves 9% than pure MC nylon, and flexural strength improves 14%; Add with after the ultra-fine elastic body toughening agent of the terpolymer EP rubber of active function groups, the Toughness Ratio nylon 66 of matrix material has clear improvement, and slightly is better than the toughness of superior in quality MC nylon.
The one-piece construction schematic diagram of the releasing pulley that the present embodiment adopts above-mentioned matrix material to prepare by injection molding process and the structural representation of spoke section are identical with embodiment 1 figure.
The present embodiment prepares releasing pulley by injection molding process, and its structure is as Fig. 1, shown in Fig. 2: 1, coaster wheel rim, and 2, the wheel shaft of running in bearings, 3, spoke, three's thickness is compared with the corresponding construction of MC nylon releasing pulley, and attenuate is in various degree all arranged; Releasing pulley weight ratio MC nylon releasing pulley weight saving 22% prepared by the present embodiment; Releasing pulley prepared by the present embodiment is light, and long service life and spoilage are low, superior in quality, can well be applied to transport the Substation construction that send of difficult high mountain and marsh land.
Embodiment 8
The matrix material for the preparation of releasing pulley of the present embodiment, with 87% nylon 66,9% fortifying fibre and the preparation of 4% toughner of percentage meter by weight.
The present embodiment, for the preparation of the preparation method of the matrix material of releasing pulley, comprises the steps:
A), in two roller mills, 0.8% coupling agent KH550 is sneaked in terpolymer EP rubber, realize coupling agent KH550 modified EPT rubber;
B), gained rubber adds in pulverizer after modification that step a) is obtained, pulverize and form the ultra-fine elastomerics of terpolymer EP rubber that contains active function groups;
C), by 87% nylon 66,9% short glass fiber and step b) the ultra-fine elastomerics 4% of the terpolymer EP rubber that contains active function groups that obtains, mix and add in twin screw extruder, extrude modification by twin screw extruder and obtain the matrix material for the preparation of releasing pulley.
The tensile strength of the matrix material obtained is 119Mpa, and flexural strength is 160MPa, and the simply supported beam notched Izod impact strength is 11J/cm
2,-40 ℃ of simply supported beam notched Izod impact strength are 9.0J/cm
2, heat-drawn wire is 171 ℃.
The tensile strength of matrix material improves 11% than pure MC nylon, and flexural strength improves 23%; Add with after the ultra-fine elastic body toughening agent of the terpolymer EP rubber of active function groups, the Toughness Ratio nylon 66 of matrix material has clear improvement, and slightly is better than the toughness of superior in quality MC nylon.
The one-piece construction schematic diagram of the releasing pulley that the present embodiment adopts above-mentioned matrix material to prepare by injection molding process and the structural representation of spoke section are identical with embodiment 1 figure.
The present embodiment prepares releasing pulley by injection molding process, and its structure is as Fig. 1, shown in Fig. 2: 1, coaster wheel rim, and 2, the wheel shaft of running in bearings, 3, spoke, three's thickness is compared with the corresponding construction of MC nylon releasing pulley, and attenuate is in various degree all arranged; Releasing pulley weight ratio MC nylon releasing pulley weight saving 21.5% prepared by the present embodiment; Releasing pulley prepared by the present embodiment is light, and long service life and spoilage are low, superior in quality, can well be applied to transport the Substation construction that send of difficult high mountain and marsh land.
Embodiment 9
The matrix material for the preparation of releasing pulley of the present embodiment, with 90% nylon 66,7% fortifying fibre and the preparation of 3% toughner of percentage meter by weight.
The present embodiment, for the preparation of the preparation method of the matrix material of releasing pulley, comprises the steps:
A), in two roller mills, 0.6% coupling agent KH550 is sneaked in terpolymer EP rubber, realize coupling agent KH550 modified EPT rubber;
B), gained rubber adds in pulverizer after modification that step a) is obtained, pulverize and form the ultra-fine elastomerics of terpolymer EP rubber that contains active function groups;
C), by 90% nylon 66,7% short glass fiber and step b) the ultra-fine elastomerics 3% of the terpolymer EP rubber that contains active function groups that obtains, mix and add in twin screw extruder, extrude modification by twin screw extruder and obtain the matrix material for the preparation of releasing pulley.
The tensile strength of the matrix material obtained is 117Mpa, and flexural strength is 163MPa, and the simply supported beam notched Izod impact strength is 11.3J/cm
2,-40 ℃ of simply supported beam notched Izod impact strength are 9.4J/cm
2, heat-drawn wire is 173 ℃.
The tensile strength of matrix material improves 10.7% than pure MC nylon, and flexural strength improves 21%; Add with after the ultra-fine elastic body toughening agent of the terpolymer EP rubber of active function groups, the Toughness Ratio nylon 66 of matrix material has clear improvement, and slightly is better than the toughness of superior in quality MC nylon.
The one-piece construction schematic diagram of the releasing pulley that the present embodiment adopts above-mentioned matrix material to prepare by injection molding process and the structural representation of spoke section are identical with embodiment 1 figure.
The present embodiment prepares releasing pulley by injection molding process, and its structure is as Fig. 1, shown in Fig. 2: 1, coaster wheel rim, and 2, the wheel shaft of running in bearings, 3, spoke, three's thickness is compared with the corresponding construction of MC nylon releasing pulley, and attenuate is in various degree all arranged; Releasing pulley weight ratio MC nylon releasing pulley weight saving 15.3% prepared by the present embodiment; Releasing pulley prepared by the present embodiment is light, and long service life and spoilage are low, superior in quality, can well be applied to transport the Substation construction that send of difficult high mountain and marsh land.
Embodiment 10
The matrix material for the preparation of releasing pulley of the present embodiment, with 70% nylon 66,26% fortifying fibre and the preparation of 4% toughner of percentage meter by weight.
The present embodiment, for the preparation of the preparation method of the matrix material of releasing pulley, comprises the steps:
A), in two roller mills, 0.8% coupling agent KH550 is sneaked in terpolymer EP rubber, realize coupling agent KH550 modified EPT rubber;
B), gained rubber adds in pulverizer after modification that step a) is obtained, pulverize and form the ultra-fine elastomerics of terpolymer EP rubber that contains active function groups;
C), by 70% nylon 66,26% short glass fiber and step b) the ultra-fine elastomerics 4% of the terpolymer EP rubber that contains active function groups that obtains, mix and add in twin screw extruder, extrude modification by twin screw extruder and obtain the matrix material for the preparation of releasing pulley.
The tensile strength of the matrix material obtained is 111Mpa, and flexural strength is 151MPa, and the simply supported beam notched Izod impact strength is 10.7J/cm
2,-40 ℃ of simply supported beam notched Izod impact strength are 9.9J/cm
2, heat-drawn wire is 173 ℃.
The tensile strength of matrix material improves 11% than pure MC nylon, and flexural strength improves 23%; Add with after the ultra-fine elastic body toughening agent of the terpolymer EP rubber of active function groups, the Toughness Ratio nylon 66 of matrix material has clear improvement, and slightly is better than the toughness of superior in quality MC nylon.
The one-piece construction schematic diagram of the releasing pulley that the present embodiment adopts above-mentioned matrix material to prepare by injection molding process and the structural representation of spoke section are identical with embodiment 1 figure.
The present embodiment prepares releasing pulley by injection molding process, and its structure is as Fig. 1, shown in Fig. 2: 1, coaster wheel rim, and 2, the wheel shaft of running in bearings, 3, spoke, three's thickness is compared with the corresponding construction of MC nylon releasing pulley, and attenuate is in various degree all arranged; Releasing pulley weight ratio MC nylon releasing pulley weight saving 17.5% prepared by the present embodiment; Releasing pulley prepared by the present embodiment is light, and long service life and spoilage are low, superior in quality, can well be applied to transport the Substation construction that send of difficult high mountain and marsh land.
Above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; after although those skilled in the art reads the application; with reference to above-described embodiment, the present invention is carried out to various modifications or change; but these modifications or change, all within right application requirement protection domain of the present invention is awaited the reply in application.
Claims (5)
1. the matrix material for the preparation of releasing pulley, is characterized in that described matrix material, with 67%～87% nylon 66,8%～25% fortifying fibre and the preparation of 5%～8% toughner by weight percentage; One or more in the filamentary material of the following arbitrary proportion of described fortifying fibre selection: short glass fiber, kevlar fiber, basalt fibre, carbon fiber and ultra high modulus polyethylene fibre; Described toughner is the ultra-fine elastomerics of terpolymer EP rubber that contains active function groups.
2. the matrix material for the preparation of releasing pulley, is characterized in that preparing with 70%～83% nylon 66,10%～21% fortifying fibre and 6%～9% toughner by weight percentage; One or more in the filamentary material of the following arbitrary proportion of described fortifying fibre selection: short glass fiber, kevlar fiber, basalt fibre, carbon fiber and ultra high modulus polyethylene fibre; Described toughner is the ultra-fine elastomerics of terpolymer EP rubber that contains active function groups.
3. the matrix material of claim 1, is characterized in that described matrix material, and with 75%～80% nylon 66,17%～20% fortifying fibre and the preparation of 5%～6% toughner by weight percentage, above-mentioned weight percent sum is 100%.
4. the preparation method of the matrix material of claim 1, comprise the steps:
A), the coupling agent KH550 of 1%～3% percent by weight is mixed with terpolymer EP rubber, make the terpolymer EP rubber modification;
B), modified rubber that step a) is obtained pulverized, and obtains the ultra-fine elastomerics of terpolymer EP rubber that contains active function groups;
C), by 67%～87% nylon 66,8%～25% short glass fiber and step b) the ultra-fine elastomerics 5%～8% of the terpolymer EP rubber that contains active function groups that obtains is mixed and modified, obtains the product matrix material.
5. the preparation method of the matrix material of claim 4, is characterized in that being mixed through twin screw extruder with two roller mills, obtains the product matrix material.
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| CN104974517A (en) * | 2015-06-30 | 2015-10-14 | 苏州博利迈新材料科技有限公司 | Heat-resistant rigid nylon, and preparation method thereof |
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| CN1329119A (en) * | 2000-06-16 | 2002-01-02 | 上海航伟科技发展有限公司 | Ethylene propylene terpolymer and its production method |
| CN1847313A (en) * | 2005-04-12 | 2006-10-18 | 中国石化集团巴陵石油化工有限责任公司 | Elastomer toughened nylon blend and its prepn process |
| CN101225228A (en) * | 2008-01-22 | 2008-07-23 | 宁波雪龙集团有限公司 | Fiber glass, elastomer and inorganic nano-particle synergistic modified nylon and preparation thereof |
| CN101230193A (en) * | 2007-12-28 | 2008-07-30 | 深圳市科聚新材料有限公司 | High-strength basalt fibre reinforced nylon composition and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1329119A (en) * | 2000-06-16 | 2002-01-02 | 上海航伟科技发展有限公司 | Ethylene propylene terpolymer and its production method |
| CN1847313A (en) * | 2005-04-12 | 2006-10-18 | 中国石化集团巴陵石油化工有限责任公司 | Elastomer toughened nylon blend and its prepn process |
| CN101230193A (en) * | 2007-12-28 | 2008-07-30 | 深圳市科聚新材料有限公司 | High-strength basalt fibre reinforced nylon composition and preparation method thereof |
| CN101225228A (en) * | 2008-01-22 | 2008-07-23 | 宁波雪龙集团有限公司 | Fiber glass, elastomer and inorganic nano-particle synergistic modified nylon and preparation thereof |
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