CN117209949A - Special composite reinforced modified polyolefin mute drain pipe material and preparation method thereof - Google Patents
Special composite reinforced modified polyolefin mute drain pipe material and preparation method thereof Download PDFInfo
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- CN117209949A CN117209949A CN202311335858.9A CN202311335858A CN117209949A CN 117209949 A CN117209949 A CN 117209949A CN 202311335858 A CN202311335858 A CN 202311335858A CN 117209949 A CN117209949 A CN 117209949A
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- 239000000463 material Substances 0.000 title claims abstract description 67
- 239000002131 composite material Substances 0.000 title claims abstract description 37
- 229920000098 polyolefin Polymers 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims description 10
- -1 polypropylene Polymers 0.000 claims abstract description 55
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 54
- 239000004743 Polypropylene Substances 0.000 claims abstract description 38
- 229920001155 polypropylene Polymers 0.000 claims abstract description 38
- 229910052882 wollastonite Inorganic materials 0.000 claims abstract description 37
- 239000010456 wollastonite Substances 0.000 claims abstract description 37
- 239000007822 coupling agent Substances 0.000 claims abstract description 32
- 239000003365 glass fiber Substances 0.000 claims abstract description 30
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 23
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 23
- 239000002270 dispersing agent Substances 0.000 claims abstract description 23
- 239000000314 lubricant Substances 0.000 claims abstract description 22
- 239000002994 raw material Substances 0.000 claims abstract description 21
- 239000003381 stabilizer Substances 0.000 claims abstract description 20
- 239000011347 resin Substances 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 9
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 20
- 239000004698 Polyethylene Substances 0.000 claims description 18
- 229920000573 polyethylene Polymers 0.000 claims description 17
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 13
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 12
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 12
- 239000001993 wax Substances 0.000 claims description 12
- 235000021355 Stearic acid Nutrition 0.000 claims description 11
- 150000004645 aluminates Chemical class 0.000 claims description 11
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 11
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 11
- 239000008117 stearic acid Substances 0.000 claims description 11
- UKRDPEFKFJNXQM-UHFFFAOYSA-N vinylsilane Chemical compound [SiH3]C=C UKRDPEFKFJNXQM-UHFFFAOYSA-N 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 3
- 239000008116 calcium stearate Substances 0.000 claims description 3
- 235000013539 calcium stearate Nutrition 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 3
- PWWSSIYVTQUJQQ-UHFFFAOYSA-N distearyl thiodipropionate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCSCCC(=O)OCCCCCCCCCCCCCCCCCC PWWSSIYVTQUJQQ-UHFFFAOYSA-N 0.000 claims description 3
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical group O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 3
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 claims description 3
- 239000012188 paraffin wax Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 229920001903 high density polyethylene Polymers 0.000 claims description 2
- 239000004700 high-density polyethylene Substances 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 abstract description 7
- 230000001743 silencing effect Effects 0.000 abstract description 3
- 238000005336 cracking Methods 0.000 abstract description 2
- 238000004381 surface treatment Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000002715 modification method Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
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- Compositions Of Macromolecular Compounds (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention provides a special material for a composite reinforced modified polyolefin mute drain pipe, which comprises the following raw materials in parts by weight: 25-33 parts of polypropylene, 3-8 parts of grafted POE, 50-60 parts of barium sulfate, 2-6 parts of modified wollastonite whisker, 4-12 parts of glass fiber, 0.5-2 parts of coupling agent, 0.3-1 part of stabilizer, 0.5-2 parts of lubricant, 0.5-1.5 parts of dispersing agent and 0.2-0.5 part of antioxidant. According to the invention, polypropylene is used as matrix resin, and glass fibers and wollastonite whiskers are used for forming a three-dimensional skeleton structure to support, so that the external pressure born by the material is improved, and the strength and the heat distortion temperature of the material are improved; in addition, barium sulfate powder subjected to surface treatment of the coupling agent is uniformly dispersed and distributed in the matrix resin under the action of the dispersing agent and the lubricating agent, so that the silencing effect of the material is greatly improved; the grafted POE is used in a material system, so that the material can effectively conduct and disperse stress when being extruded and impacted by external force, and the material is prevented from cracking.
Description
Technical Field
The invention relates to the technical field of plastic pipes, in particular to a special material for a composite reinforced modified polyolefin silent drain pipe and a preparation method thereof.
Background
The polypropylene silent drain pipe is made of polypropylene as basic raw material, one layer of polypropylene resin is respectively arranged on the inner side and the outer side, and the middle layer is made of compact sound insulation material. The main body material is a middle sound insulation material, not only plays a sound insulation role, but also supports the whole pipeline system and provides necessary mechanical strength. At present, the material is mainly prepared by taking polypropylene as a matrix and blending the polypropylene with compact materials such as barium sulfate and the like and some necessary auxiliary agents.
However, due to the existence of compact substances such as barium sulfate and the like, the material can effectively attenuate sound waves, so that a silencing effect is achieved, however, the pure use of the blending of the barium sulfate and the polypropylene is low in ring stiffness and low in heat distortion temperature of the pipe.
Therefore, a new special material for the composite reinforced modified polyolefin silent drain pipe needs to be developed to solve the problems.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art, and provides a special material for a composite reinforced modified polyolefin silent drain pipe and a preparation method thereof, wherein the special material comprises the following specific scheme:
a special composite reinforced modified polyolefin mute drain pipe material comprises the following raw materials in parts by weight: 25-33 parts of polyethylene or polypropylene, 3-8 parts of grafted POE, 50-60 parts of barium sulfate, 0-12 parts of modified wollastonite whisker, 0-12 parts of glass fiber, 0.5-2 parts of coupling agent, 0.3-1 part of stabilizer, 0.5-2 parts of lubricant, 0.5-1.5 parts of dispersing agent and 0.2-0.5 part of antioxidant.
Based on the above, the polyethylene is PE100 grade high density polyethylene resin, and the polypropylene is block copolymerized polypropylene.
Based on the above, the grafted POE is a maleic anhydride grafted ethylene octene copolymer.
Based on the above, the barium sulfate is 1500 mesh natural barium sulfate.
Based on the above, the modified wollastonite whisker has an aspect ratio of more than 20:1, infiltrating the modified active whisker by a silane coupling agent solution.
The modified wollastonite whisker has nonpolar surface and good compatibility with polypropylene, and can be well dispersed in matrix resin, thereby improving the mechanical property of the composite material system. Specifically, the modification method of the wollastonite whisker comprises the following steps: immersing wollastonite whiskers in a solution of a vinyl silane coupling agent (vinyl silane: water: ethanol=1:7:2) for 20-25 minutes, and then placing the immersed wollastonite whiskers in a vacuum drying oven for drying to obtain modified wollastonite whiskers.
Based on the above, the glass fiber is alkali-free glass fiber infiltrated by vinyl silane coupling agent.
Based on the above, the coupling agent is one or more of vinyl silane coupling agent and aluminate coupling agent; the stabilizer is one or more of zinc stearate and calcium stearate; the lubricant is one or more of polyethylene wax, polypropylene wax, stearic acid and paraffin wax.
Based on the above, the dispersant is EBS ethylene bis stearamide.
Based on the above, the antioxidant is one or more of antioxidant 1010, antioxidant 168 and antioxidant DSTDP.
The preparation method of the special material for the composite reinforced modified polyolefin mute drain pipe comprises the following steps:
s1, adding barium sulfate powder into a high-speed mixer, stirring and heating to 105-110 ℃, adding a coupling agent, stirring for 10-15 minutes, then adding polypropylene, grafted POE, a stabilizer, a lubricant, a dispersing agent and an antioxidant, and uniformly mixing to obtain a first mixture;
s2, feeding the first mixed material by using a screw feeder 1, feeding the modified wollastonite whisker by using a screw feeder 2, feeding the modified wollastonite whisker into a parallel co-directional double-screw extruder, simultaneously adding continuous glass fiber at an exhaust port in the middle of the parallel co-directional double-screw extruder, automatically rolling the glass fiber into the double-screw extruder by rotating the screw to mix with the first mixed material, extruding, and cooling and granulating to obtain the special material for the composite reinforced modified polyolefin silent drain pipe.
Compared with the prior art, the invention has outstanding substantive characteristics and remarkable progress, and particularly has the following advantages:
1. in the invention, polyethylene or polypropylene is used as matrix resin, and glass fiber and wollastonite whisker are used to form a three-dimensional skeleton structure for supporting, so that the external pressure born by the material is improved, and the strength and the heat distortion temperature of the material are improved.
2. In the invention, the barium sulfate powder subjected to surface treatment by the coupling agent is uniformly dispersed and distributed in the matrix resin under the action of the dispersing agent and the lubricating agent, so that the silencing effect of the material is greatly improved;
3. according to the invention, the grafted POE increases the compatibility between the inorganic material and polyethylene or polypropylene in a material system, and meanwhile, the soft chain segment grafted with the POE is coated on the surface of the inorganic material, so that the material can effectively conduct and disperse stress when being extruded and impacted by external force, and the material is prevented from cracking.
Detailed Description
The technical scheme of the invention is further described in detail through the following specific embodiments.
Example 1
The special composite reinforced modified polyolefin mute drain pipe material is characterized by comprising the following raw materials in parts by weight:
31 parts of polypropylene, 3 parts of grafted POE,60 parts of barium sulfate, 2 parts of modified wollastonite whiskers, 4 parts of glass fibers, 2 parts of a coupling agent (adopting aluminate), 1 part of a stabilizer (comprising 0.5 part of zinc stearate and 0.5 part of calcium stearate), 2 parts of a lubricant (adopting paraffin wax), 1.5 parts of a dispersing agent and 0.2 part of an antioxidant (adopting antioxidant 1010).
The polypropylene is block copolymerized polypropylene.
The grafted POE is maleic anhydride grafted ethylene octene copolymer.
The barium sulfate is 1500 mesh natural barium sulfate.
The modified wollastonite whisker has an aspect ratio of more than 20:1, infiltrating the modified active whisker by a silane coupling agent solution.
The modified wollastonite whisker has nonpolar surface and good compatibility with polypropylene, and can be well dispersed in matrix resin, so that the mechanical property of the composite material system is improved. Specifically, the modification method of the wollastonite whisker comprises the following steps: immersing wollastonite whiskers in a solution of a vinyl silane coupling agent (vinyl silane: water: ethanol=1:7:2) for 20-25 minutes, and then placing the immersed wollastonite whiskers in a vacuum drying oven for drying to obtain modified wollastonite whiskers.
The glass fiber is alkali-free glass fiber soaked by vinyl silane coupling agent.
The dispersant is EBS ethylene bis stearamide.
The preparation method of the special material for the composite reinforced modified polyolefin mute drain pipe comprises the following steps:
s1, adding barium sulfate powder into a high-speed mixer, stirring and heating to 105-110 ℃, adding a coupling agent, stirring for 10-15 minutes, then adding polypropylene, grafted POE, a stabilizer, a lubricant, a dispersing agent and an antioxidant, and uniformly mixing to obtain a first mixture;
s2, feeding the first mixed material by using a screw feeder 1, feeding the modified wollastonite whisker by using a screw feeder 2, feeding the modified wollastonite whisker into a parallel co-directional double-screw extruder, simultaneously adding continuous glass fiber at an exhaust port in the middle of the parallel co-directional double-screw extruder, automatically rolling the glass fiber into the double-screw extruder by rotating the screw to mix with the first mixed material, extruding, and cooling and granulating to obtain the special material for the composite reinforced modified polyolefin silent drain pipe.
Example 2
The difference with the embodiment 1 is that the special material for the composite reinforced modified polyolefin silent drain pipe comprises the following raw materials in parts by weight and the selection of certain raw materials:
28 parts of polypropylene, 5 parts of grafted POE,55 parts of barium sulfate, 4 parts of modified wollastonite whiskers, 8 parts of glass fibers, 2 parts of a coupling agent (comprising 0.5 part of a silane coupling agent and 1.5 parts of an aluminate coupling agent), 0.5 part of a stabilizer (using zinc stearate), 2 parts of a lubricant (using 1.5 parts of polypropylene wax and 0.5 part of stearic acid), 1 part of a dispersing agent, and 0.3 part of an antioxidant (comprising 0.2 part of an antioxidant 1010 and 0.1 part of an antioxidant 168).
Example 3
The difference with the embodiment 1 is that the special material for the composite reinforced modified polyolefin silent drain pipe comprises the following raw materials in parts by weight and the selection of certain raw materials:
27 parts of polypropylene, 5 parts of grafted POE,50 parts of barium sulfate, 6 parts of modified wollastonite whiskers, 12 parts of glass fibers, 1 part of a coupling agent (adopting a silane coupling agent), 0.3 part of a stabilizer (adopting zinc stearate), 0.5 part of a lubricant (adopting stearic acid), 0.5 part of a dispersing agent and 0.5 part of an antioxidant (comprising 0.2 part of antioxidant 1010 and 0.1 part of antioxidant 168 and 0.2 part of antioxidant DSTDP).
Example 4
The difference with the embodiment 1 is that the special material for the composite reinforced modified polyolefin silent drain pipe comprises the following raw materials in parts by weight and the selection of certain raw materials:
33 parts of polypropylene, 55 parts of barium sulfate, 4 parts of modified wollastonite whiskers, 8 parts of glass fibers, 2 parts of a coupling agent (comprising 0.5 part of a silane coupling agent and 1.5 parts of an aluminate coupling agent), 0.5 part of a stabilizer (zinc stearate), 1 part of a lubricant (polypropylene wax), 1 part of a dispersing agent and 0.3 part of an antioxidant (comprising 0.2 part of 1010 and 0.1 part of antioxidant 168).
Example 5
The difference with the embodiment 1 is that the special material for the composite reinforced modified polyolefin silent drain pipe comprises the following raw materials in parts by weight and the selection of certain raw materials:
28 parts of polypropylene, 5 parts of grafted POE,55 parts of barium sulfate, 4 parts of modified wollastonite whiskers, 8 parts of glass fiber, 0.5 part of a coupling agent (adopting a silane coupling agent), 0.5 part of a stabilizer (adopting zinc stearate), 1 part of a lubricant (adopting stearic acid), 1 part of a dispersing agent, and 0.3 part of an antioxidant (comprising 0.2 part of an antioxidant 1010 and 0.1 part of an antioxidant 168).
Example 6
The difference with the embodiment 1 is that the special material for the composite reinforced modified polyolefin silent drain pipe comprises the following raw materials in parts by weight and the selection of certain raw materials:
25 parts of polypropylene, 8 parts of grafted POE,55 parts of barium sulfate, 4 parts of modified wollastonite whiskers, 8 parts of glass fibers, 2 parts of a coupling agent (comprising 0.5 part of a silane coupling agent and 1.5 parts of an aluminate coupling agent), 0.5 part of a stabilizer (zinc stearate), 2 parts of a lubricant (comprising 1.5 parts of polypropylene wax and 0.5 part of stearic acid), 1 part of a dispersing agent, and 0.3 part of an antioxidant (comprising 0.2 part of an antioxidant 1010 and 0.1 part of an antioxidant 168).
Comparative example 1
The special material for the composite reinforced modified polyolefin mute drain pipe comprises the following raw materials in parts by weight:
28 parts of polypropylene, 5 parts of grafted POE,67 parts of barium sulfate, 2 parts of a coupling agent (comprising 0.5 part of a silane coupling agent and 1.5 parts of an aluminate coupling agent), 0.5 part of a stabilizer (using zinc stearate), 2 parts of a lubricant (comprising 1.5 parts of polypropylene wax and 0.5 part of stearic acid), 1 part of a dispersing agent, and 0.3 part of an antioxidant (comprising 0.2 part of an antioxidant 1010 and 0.1 part of an antioxidant 168).
The preparation method of the special material for the composite reinforced modified polyolefin mute drain pipe comprises the following steps:
s1, adding barium sulfate powder into a high-speed mixer, stirring and heating to 105-110 ℃, adding a coupling agent, stirring for 10-15 minutes, then adding polypropylene, grafted POE, a stabilizer, a lubricant, a dispersing agent and an antioxidant, and uniformly mixing to obtain a first mixture;
s2, feeding the first mixed material by a screw feeder, feeding the first mixed material into a parallel co-rotating double screw extruder for mixing, extruding, and cooling and granulating to obtain the special material for the composite reinforced modified polyolefin silent drain pipe.
It is to be noted that the preparation methods of examples 1 to 6 are the same as those of example 1; comparative example 1 the proportions of the remaining materials were the same as in example 2 except that the glass fiber and modified wollastonite whisker were replaced with barium sulfate in equal proportions.
The silent drain pipe performance tests prepared in examples 1-6 and comparative examples above are set forth in Table 1:
TABLE 1
As can be seen from table 1: examples 1-6 compared with comparative example, the glass fiber and wollastonite whisker composite modified reinforced polypropylene is added into the material, so that the tensile strength, the bending modulus and the notch impact strength of the material are all higher than those of comparative example 1; meanwhile, the heat distortion temperature of the glass fiber and wollastonite whisker to the material is also obviously improved.
Example 7
The difference from comparative example 1 is that the mute drainpipe special material comprises the following raw materials in parts by weight:
31 parts of polyethylene, 5 parts of grafted POE,52 parts of barium sulfate, 12 parts of modified wollastonite whiskers, 2 parts of a coupling agent (comprising 0.5 part of a vinyl silane coupling agent and 1.5 parts of an aluminate coupling agent), 0.5 part of a stabilizer (zinc stearate), 2 parts of a lubricant (comprising 1.5 parts of polyethylene wax and 0.5 part of stearic acid), 1 part of a dispersing agent and 0.3 part of an antioxidant (comprising 0.2 part of an antioxidant 1010 and 0.1 part of an antioxidant 168).
Example 8
The difference from the embodiment 1 is that the special material for the mute water discharge pipe comprises the following raw materials in parts by weight and the selection of certain raw materials:
31 parts of polyethylene, 5 parts of grafted POE,52 parts of barium sulfate, 12 parts of glass fiber, 2 parts of a coupling agent (comprising 0.5 part of a vinyl silane coupling agent and 1.5 parts of an aluminate coupling agent), 0.5 part of a stabilizer (zinc stearate), 2 parts of a lubricant (comprising 1.5 parts of polyethylene wax and 0.5 part of stearic acid), 1 part of a dispersing agent, and 0.3 part of an antioxidant (comprising 0.2 part of an antioxidant 1010 and 0.1 part of an antioxidant 168).
Example 9
The difference from the embodiment 1 is that the special material for the mute water discharge pipe comprises the following raw materials in parts by weight and the selection of certain raw materials:
31 parts of polyethylene, 5 parts of grafted POE,52 parts of barium sulfate, 4 parts of modified wollastonite whiskers, 8 parts of glass fibers, 2 parts of a coupling agent (comprising 0.5 part of a silane coupling agent and 1.5 parts of an aluminate coupling agent), 0.5 part of a stabilizer (using zinc stearate), 2 parts of a lubricant (comprising 1.5 parts of polyethylene wax and 0.5 part of stearic acid), 1 part of a dispersing agent, and 0.3 part of an antioxidant (comprising 0.2 part of antioxidant 1010 and 0.1 part of antioxidant 168).
Comparative example 2
A special composite reinforced modified polyolefin mute drainage pipeline material comprises the following substances in parts by weight:
31 parts of polyethylene, 5 parts of grafted POE,64 parts of barium sulfate, 2 parts of a coupling agent (comprising 0.5 part of a silane coupling agent and 1.5 parts of an aluminate coupling agent), 0.5 part of a stabilizer (zinc stearate), 2 parts of a lubricant (comprising 1.5 parts of polyethylene wax and 0.5 part of stearic acid), 1 part of a dispersing agent, and 0.3 part of an antioxidant (comprising 0.2 part of an antioxidant 1010 and 0.1 part of an antioxidant 168).
The performance tests of the special materials for the composite reinforced modified polyolefin silent drain pipeline prepared in the above examples 7 to 9 and comparative example 2 are shown in Table 2.
TABLE 2
As can be seen from table 2: examples 7-9 use glass fiber and wollastonite whisker composite modified reinforced polyethylene, and the tensile strength, bending modulus and notch impact strength of the materials are all higher than those of comparative example 2; and meanwhile, the glass fiber and wollastonite whisker can obviously raise the heat distortion temperature of the material.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (10)
1. The special composite reinforced modified polyolefin mute drain pipe material is characterized by comprising the following raw materials in parts by weight: 25-33 parts of polyethylene or polypropylene, 3-8 parts of grafted POE, 50-60 parts of barium sulfate, 0-12 parts of modified wollastonite whisker, 0-12 parts of glass fiber, 0.5-2 parts of coupling agent, 0.3-1 part of stabilizer, 0.5-2 parts of lubricant, 0.5-1.5 parts of dispersing agent and 0.2-0.5 part of antioxidant.
2. The special composite reinforced modified polyolefin silent drain pipe material according to claim 1, which is characterized in that: the polyethylene is PE 100-grade high-density polyethylene resin, and the polypropylene is block-copolymerized polypropylene.
3. The special composite reinforced modified polyolefin silent drain pipe material according to claim 1, which is characterized in that: the grafted POE is maleic anhydride grafted ethylene octene copolymer.
4. The special composite reinforced modified polyolefin silent drain pipe material according to claim 1, which is characterized in that: the barium sulfate is 1500 mesh natural barium sulfate.
5. The special composite reinforced modified polyolefin silent drain pipe material according to claim 1, which is characterized in that: the modified wollastonite whisker has an aspect ratio of more than 20:1, infiltrating the modified active whisker by a silane coupling agent solution.
6. The special composite reinforced modified polyolefin silent drain pipe material and the preparation method thereof according to claim 1 are characterized in that: the glass fiber is alkali-free glass fiber infiltrated by vinyl silane coupling agent.
7. The special composite reinforced modified polyolefin silent drain pipe material according to claim 1, which is characterized in that: the coupling agent is one or more of vinyl silane coupling agent and aluminate coupling agent; the stabilizer is one or more of zinc stearate and calcium stearate; the lubricant is one or more of polyethylene wax, polypropylene wax, stearic acid and paraffin wax.
8. The special composite reinforced modified polyolefin silent drain pipe material according to claim 1, which is characterized in that: the dispersing agent is EBS ethylene bis stearamide.
9. The special composite reinforced modified polyolefin silent drain pipe material according to claim 1, which is characterized in that: the antioxidant is one or more of antioxidant 1010, antioxidant 168 and antioxidant DSTDP.
10. The preparation method of the special composite reinforced modified polyolefin silent drain pipe material according to any one of claims 1 to 9, which is characterized by comprising the following steps:
s1, adding barium sulfate powder into a high-speed mixer, stirring and heating to 105-110 ℃, adding a coupling agent, stirring for 10-15 minutes, then adding polypropylene, grafted POE, a stabilizer, a lubricant, a dispersing agent and an antioxidant, and uniformly mixing to obtain a first mixture;
s2, feeding the first mixed material by using a screw feeder 1, feeding the modified wollastonite whisker by using a screw feeder 2, feeding the modified wollastonite whisker into a parallel co-directional double-screw extruder, simultaneously adding continuous glass fiber at an exhaust port in the middle of the parallel co-directional double-screw extruder, automatically rolling the glass fiber into the double-screw extruder by rotating the screw to mix with the first mixed material, extruding, and cooling and granulating to obtain the special material for the composite reinforced modified polyolefin silent drain pipe.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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