CN115678270B - Glass fiber modified polyamide and sleeve thereof - Google Patents
Glass fiber modified polyamide and sleeve thereof Download PDFInfo
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- CN115678270B CN115678270B CN202211281265.4A CN202211281265A CN115678270B CN 115678270 B CN115678270 B CN 115678270B CN 202211281265 A CN202211281265 A CN 202211281265A CN 115678270 B CN115678270 B CN 115678270B
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- glass fiber
- modified polyamide
- sleeve
- fiber modified
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- 239000003365 glass fiber Substances 0.000 title claims abstract description 45
- 239000004952 Polyamide Substances 0.000 title claims abstract description 41
- 229920002647 polyamide Polymers 0.000 title claims abstract description 41
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 8
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 6
- 239000007822 coupling agent Substances 0.000 claims abstract description 6
- 239000012024 dehydrating agents Substances 0.000 claims abstract description 6
- 238000002360 preparation method Methods 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims abstract description 3
- 239000000080 wetting agent Substances 0.000 claims abstract description 3
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 claims description 18
- -1 PA613 Polymers 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 13
- 239000004567 concrete Substances 0.000 claims description 11
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 claims description 8
- DXGLGDHPHMLXJC-UHFFFAOYSA-N oxybenzone Chemical compound OC1=CC(OC)=CC=C1C(=O)C1=CC=CC=C1 DXGLGDHPHMLXJC-UHFFFAOYSA-N 0.000 claims description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 6
- 239000012188 paraffin wax Substances 0.000 claims description 6
- 239000007983 Tris buffer Substances 0.000 claims description 5
- MCPKSFINULVDNX-UHFFFAOYSA-N drometrizole Chemical compound CC1=CC=C(O)C(N2N=C3C=CC=CC3=N2)=C1 MCPKSFINULVDNX-UHFFFAOYSA-N 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- QUAMTGJKVDWJEQ-UHFFFAOYSA-N octabenzone Chemical compound OC1=CC(OCCCCCCCC)=CC=C1C(=O)C1=CC=CC=C1 QUAMTGJKVDWJEQ-UHFFFAOYSA-N 0.000 claims description 5
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- NKJOXAZJBOMXID-UHFFFAOYSA-N 1,1'-Oxybisoctane Chemical compound CCCCCCCCOCCCCCCCC NKJOXAZJBOMXID-UHFFFAOYSA-N 0.000 claims description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 4
- 239000005977 Ethylene Substances 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 4
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- MQWFLKHKWJMCEN-UHFFFAOYSA-N n'-[3-[dimethoxy(methyl)silyl]propyl]ethane-1,2-diamine Chemical compound CO[Si](C)(OC)CCCNCCN MQWFLKHKWJMCEN-UHFFFAOYSA-N 0.000 claims description 4
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 229920002545 silicone oil Polymers 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 claims description 4
- JIHQDMXYYFUGFV-UHFFFAOYSA-N 1,3,5-triazine Chemical compound C1=NC=NC=N1 JIHQDMXYYFUGFV-UHFFFAOYSA-N 0.000 claims description 3
- 125000003143 4-hydroxybenzyl group Chemical group [H]C([*])([H])C1=C([H])C([H])=C(O[H])C([H])=C1[H] 0.000 claims description 3
- 239000002250 absorbent Substances 0.000 claims description 3
- 230000002745 absorbent Effects 0.000 claims description 3
- 239000012964 benzotriazole Substances 0.000 claims description 3
- OCWYEMOEOGEQAN-UHFFFAOYSA-N bumetrizole Chemical compound CC(C)(C)C1=CC(C)=CC(N2N=C3C=C(Cl)C=CC3=N2)=C1O OCWYEMOEOGEQAN-UHFFFAOYSA-N 0.000 claims description 3
- ULBTUVJTXULMLP-UHFFFAOYSA-N butyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCCCC ULBTUVJTXULMLP-UHFFFAOYSA-N 0.000 claims description 3
- INJVFBCDVXYHGQ-UHFFFAOYSA-N n'-(3-triethoxysilylpropyl)ethane-1,2-diamine Chemical compound CCO[Si](OCC)(OCC)CCCNCCN INJVFBCDVXYHGQ-UHFFFAOYSA-N 0.000 claims description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- ZQBAKBUEJOMQEX-UHFFFAOYSA-N salicylic acid phenyl ester Natural products OC1=CC=CC=C1C(=O)OC1=CC=CC=C1 ZQBAKBUEJOMQEX-UHFFFAOYSA-N 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 claims description 3
- MTEZSDOQASFMDI-UHFFFAOYSA-N 1-trimethoxysilylpropan-1-ol Chemical compound CCC(O)[Si](OC)(OC)OC MTEZSDOQASFMDI-UHFFFAOYSA-N 0.000 claims description 2
- ZXDDPOHVAMWLBH-UHFFFAOYSA-N 2,4-Dihydroxybenzophenone Chemical compound OC1=CC(O)=CC=C1C(=O)C1=CC=CC=C1 ZXDDPOHVAMWLBH-UHFFFAOYSA-N 0.000 claims description 2
- AIBRSVLEQRWAEG-UHFFFAOYSA-N 3,9-bis(2,4-ditert-butylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP1OCC2(COP(OC=3C(=CC(=CC=3)C(C)(C)C)C(C)(C)C)OC2)CO1 AIBRSVLEQRWAEG-UHFFFAOYSA-N 0.000 claims description 2
- WPMYUUITDBHVQZ-UHFFFAOYSA-N 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoic acid Chemical compound CC(C)(C)C1=CC(CCC(O)=O)=CC(C(C)(C)C)=C1O WPMYUUITDBHVQZ-UHFFFAOYSA-N 0.000 claims description 2
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 claims description 2
- MTUBBMSQXXJFQP-UHFFFAOYSA-N OC(CCCCCCCCCCCCCCCCC(=O)OCC(O)CO)(O)O Chemical compound OC(CCCCCCCCCCCCCCCCC(=O)OCC(O)CO)(O)O MTUBBMSQXXJFQP-UHFFFAOYSA-N 0.000 claims description 2
- 239000004743 Polypropylene Substances 0.000 claims description 2
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 2
- 150000004645 aluminates Chemical class 0.000 claims description 2
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims description 2
- 239000013522 chelant Substances 0.000 claims description 2
- 238000013461 design Methods 0.000 claims description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims description 2
- 229940057995 liquid paraffin Drugs 0.000 claims description 2
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 claims description 2
- FATBGEAMYMYZAF-UHFFFAOYSA-N oleicacidamide-heptaglycolether Natural products CCCCCCCCC=CCCCCCCCC(N)=O FATBGEAMYMYZAF-UHFFFAOYSA-N 0.000 claims description 2
- 239000004209 oxidized polyethylene wax Substances 0.000 claims description 2
- 235000013873 oxidized polyethylene wax Nutrition 0.000 claims description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- CYTQBVOFDCPGCX-UHFFFAOYSA-N trimethyl phosphite Chemical compound COP(OC)OC CYTQBVOFDCPGCX-UHFFFAOYSA-N 0.000 claims description 2
- 239000001993 wax Substances 0.000 claims description 2
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 2
- 230000003020 moisturizing effect Effects 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 8
- 230000032683 aging Effects 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 239000000155 melt Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 125000004423 acyloxy group Chemical group 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- APSBXTVYXVQYAB-UHFFFAOYSA-M sodium docusate Chemical group [Na+].CCCCC(CC)COC(=O)CC(S([O-])(=O)=O)C(=O)OCC(CC)CCCC APSBXTVYXVQYAB-UHFFFAOYSA-M 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to preparation of glass fiber modified polyamide and a sleeve thereof, belonging to the technical field of tunnel engineering. The glass fiber modified polyamide prepared by the invention comprises the following raw materials in parts by weight: 50-60 parts of polyamide, 30-35 parts of glass fiber, 1-5 parts of compatilizer, 0.2-1 part of anti-aging agent, 0.2-1 part of ultraviolet absorber, 0.1-2 parts of coupling agent, 0.1-1 part of wetting agent and 0.1-2 parts of dehydrating agent. According to the invention, the structural strength of the bolt sleeve is improved by adjusting the proportion of each material of polyamide and adding glass fiber, so that the oxidation resistance and ageing resistance of the bolt sleeve are improved, and the durability of the bolt sleeve is ensured.
Description
Technical Field
The invention belongs to the technical field of tunnel engineering, and particularly relates to glass fiber modified polyamide and a sleeve thereof.
Background
For the shield tunnel, the lining structure is mainly reinforced concrete segments, and the connection between segments is usually realized by bolts at present, and the domestic common bolt connection mode mainly comprises straight bolts, bent bolts and inclined bolts. Compared with the existing three bolts, two hand holes are needed to be arranged on the single straight bolt or the bent bolt to provide an operation space for fastening the bolts, so that the number of single pipe piece longitudinal and reversing connecting bolts is up to 5 or more, the number of corresponding hand holes is up to 10 or more, the single inclined bolt is only needed to be provided with one hand hole and one embedded bolt sleeve, the single pipe piece is provided with 5 hand holes and 5 embedded bolt sleeves, and the thickness of the shield pipe piece is generally 30-55cm and the like according to engineering requirements; because of the existence of a large number of bolt hand holes, the integrity of the segment is greatly affected, the structural strength is reduced, and especially the segment strength at the joint part is reduced. The inclined bolt connection can reduce half hand holes and reduce the weakening of the duct piece, but the application of the inclined bolt is not very wide at present, and the reasons for the correction are mainly factors such as the durability of the embedded bolt sleeve, the strength of the body, the pulling resistance, the accurate positioning of the duct piece bolt hole, the rapid fastening and the like.
Therefore, a set of shield segment-to-segment oblique bolt joint connecting device and a matched construction process are urgently needed to improve segment structural strength and assembly efficiency.
Disclosure of Invention
The invention aims to provide glass fiber modified polyamide and a sleeve thereof, so as to solve the problems in the prior art.
The aim of the invention can be achieved by the following technical scheme:
the glass fiber modified polyamide comprises the following raw materials in parts by weight: 50-60 parts of polyamide, 30-35 parts of glass fiber, 1-5 parts of compatilizer, 0.2-1 part of anti-aging agent, 0.2-1 part of ultraviolet absorber, 0.1-2 parts of coupling agent, 0.1-1 part of wetting agent and 0.1-2 parts of dehydrating agent.
Further, the polyamide is obtained by mixing one or more of PA66, PA6, PA613, PA11, PA1010 and PA1313 in any ratio.
Further, the glass fiber is glass powder, and the size of the glass fiber is 10-70um in diameter and 3-20mm in length.
Further, the compatilizer is one or more of SBS-g-MAH, ABS-g-MAH, EPDM-g-GMA, PE-g-GMA, POE-g-GMA and POE-g-MAH which are mixed according to any ratio.
Further, the anti-aging agent is any one or more of bis (2, 4-di-tert-butylphenyl) pentaerythritol diphosphite, tris (2, 4-di-tert-butyl) phosphite, 1,3, 5-tris (3, 5-di-tert-butyl, 4-hydroxybenzyl) s-triazine and tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester which are mixed according to any ratio.
Further, the ultraviolet absorbent is any one or more of phenyl O-hydroxybenzoate, 2, 4-dihydroxybenzophenone (UV-O), 2-hydroxy-4-methoxybenzophenone (UV-9), 2-hydroxy-4-n-octoxybenzophenone (UV-531), 2- (2-hydroxy-5-methylphenyl) benzotriazole (UV-P), 2- (2-hydroxy-3, 5-bis (a, a-dimethylbenzyl) phenyl) benzotriazole (UV-234) and 2- (2-hydroxy-3-tert-butyl-5-methylphenyl) -5-chlorobenzotriazole (UV-326) which are mixed according to any ratio.
Further, the coupling agent is any one or more of gamma-aminopropyl trimethoxy silane, N- (beta-aminoethyl) -gamma-aminopropyl methyl dimethoxy silane, N- (beta-aminoethyl) -gamma-aminopropyl triethoxy silane, isopropyl dioleoyl (dioctyl acyloxy phosphate) titanate, bis (dioctyl oxy pyrophosphato) ethylene titanate, chelate of bis (dioctyl oxy pyrophosphato) ethylene titanate and triethanolamine, trimethyl aluminate triisopropyl aluminate, tribenzyl aluminate and gamma-glycidyl ether oxypropyl trimethoxy silane.
Further, the lubricant is one or more of zinc stearate, N-Ethylene Bis Stearamide (EBS), oleamide, N-Butyl Stearate (BS), glycerol trihydroxystearate, microcrystalline paraffin, liquid paraffin, solid paraffin, polyethylene wax, oxidized polyethylene wax, methyl silicone oil, benzyl silicone oil, ethyl silicone oil, polyethylene, polypropylene and ABS resin which are mixed according to any ratio.
Further, the dehydrating agent is one or more of phosphorus pentoxide, trimethyl phosphite and acetic anhydride, which are mixed according to any ratio.
The preparation method of the glass fiber modified polyamide comprises the following steps: weighing each component, mixing and plasticizing polyamide, glass fiber, SBS-g-MAH, tri (2, 4-di-tert-butyl) phosphite, 2-hydroxy-4-methoxybenzophenone (UV-9), N- (beta-aminoethyl) -gamma-aminopropyl methyl dimethoxy silane, N-Ethylene Bis Stearamide (EBS) and acetic anhydride by melt mixing equipment with the processing temperature of 250-3500 ℃, carrying out open mixing for 10 minutes by a two-roll open mill, carrying out hot molding by a calender at the roller temperature of 350 ℃ and the roller rotating speed of 80r/min, carrying out heat preservation and pressure maintaining for 2 hours at the die temperature of 350 ℃ and the pressure of 110MPa, and cooling to 100 ℃, and demoulding to obtain the glass fiber modified polyamide.
The sleeve is prepared from any glass fiber modified polyamide as a raw material.
The sleeve is used as a bolt sleeve, a mounting hand hole is formed in duct piece concrete, a connecting bolt is connected between the mounting hand hole and the bolt sleeve, the bolt sleeve comprises a bolt sleeve straight line section and a bottom expanding section, the bottom of the bolt sleeve is provided with the bottom expanding section, the axial pulling resistance of the end part of the bolt sleeve is increased on the basis of fully exerting the tensile strength of a material, and the bolt sleeve straight line section is provided with an anti-torsion protrusion. The outside of the bolt sleeve is provided with a thread groove to improve the bonding strength between the bolt sleeve and the duct piece concrete, and the inside is provided with an inside screw thread. A positioning mark and a laser positioning base point are arranged in the segment concrete, and visual quick rough positioning and laser centering accurate positioning are adopted, so that the assembly efficiency is quickly improved; meanwhile, the hand-held electric torque wrench is used for accelerating the bolt fastening efficiency.
The invention has the beneficial effects that:
(1) The screw thread groove is arranged on the outer side of the bolt sleeve, and a sufficient rough surface is provided to improve the bonding strength between the bolt sleeve and the segment concrete. The bottom of the bolt sleeve is designed in a bottom expanding shape, and the axial pulling resistance of the end part of the bolt sleeve is increased on the basis of fully exerting the tensile strength of materials. The positioning mark and the laser positioning base point are arranged in the duct piece concrete, and visual quick rough positioning and laser centering accurate positioning are adopted, so that the assembly efficiency is quickly improved; meanwhile, the hand-held electric torque wrench is used for accelerating the bolt fastening efficiency.
(2) The bolt sleeve for the shield tunnel can effectively improve the durability of the segment concrete connecting piece, improve the integral strength of the connecting piece and ensure the operation safety of the shield tunnel. And meanwhile, compared with the conventional steel member, the material cost is reduced, and the engineering investment is effectively reduced. According to the invention, the structural strength of the bolt sleeve is improved by adjusting the proportion of each material of polyamide and adding glass fiber, so that the oxidation resistance and ageing resistance of the bolt sleeve are improved, and the durability of the bolt sleeve is ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a general layout of a diagonal bolting system according to the invention;
FIG. 2 is a cross-sectional view of a bolt housing according to the present invention;
FIG. 3 is a cross-sectional view of a bolt housing structure according to the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1. segment concrete; 2. a bolt sleeve; 3. a connecting bolt; 4. a mounting hand hole; 5. the bolt is sleeved with a straight line segment; 6. a bottom expanding section; 7. a thread groove; 8. an anti-twist protrusion; 9. inner screw threads.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The preparation method of the glass fiber modified polyamide comprises the following steps:
weighing 65 parts of polyamide, 30 parts of glass fiber, 1 part of SBS-g-MAH 2 part of tri (2, 4-di-tert-butyl) phosphite, 0.5 part of 2-hydroxy-4-methoxybenzophenone (UV-9), 0.5 part of N- (beta-aminoethyl) -gamma-aminopropyl methyl dimethoxy silane, 0.5 part of N, N-Ethylene Bis Stearamide (EBS) and 0.5 part of acetic anhydride, mixing and plasticizing the components by a melt mixing device with the processing temperature of 250-3500 ℃, carrying out open mill for 10 minutes by a double-roll open mill, wherein the temperature of the roll is 350 ℃, the rotating speed of the roll is 80r/min, carrying out hot press molding by a calender, the mold temperature is 350 ℃, the pressure is 110MPa, the temperature and the pressure are kept for 2 hours, and the temperature is reduced to 100 ℃, thus obtaining the glass fiber modified polyamide.
Example 2
The preparation method of the glass fiber modified polyamide comprises the following steps:
weighing 63 parts of polyamide, 32 parts of glass fiber, 1 part of EPDM-g-GMA, 2 parts of tri (2, 4-di-tert-butyl) phosphite, 0.5 part of 2- (2-hydroxy-5-methylphenyl) benzotriazole (UV-P), 0.5 part of N- (beta-aminoethyl) -gamma-aminopropyl triethoxysilane, 0.5 part of solid paraffin and 0.5 part of acetic anhydride, mixing and plasticizing the components by a melt mixing device with the processing temperature of 250-3500 ℃, carrying out open mill on the mixture for 10 minutes, keeping the temperature of the roller at 350 ℃, the rotating speed of the roller at 80r/min, hot molding by a calender, keeping the temperature at 350 ℃ and the pressure at 110MPa, preserving heat for 2 hours, cooling to 100 ℃, and demoulding to obtain the glass fiber modified polyamide.
Example 3
The preparation method of the glass fiber modified polyamide comprises the following steps:
weighing 60 parts of polyamide, 30 parts of glass fiber, 1 part of POE-g-GMA, 1 part of 1,3, 5-tris (3, 5-di-tert-butyl, 4-hydroxybenzyl) s-triazine, 1 part of 2- (2-hydroxy-3, 5-bis (a, a-dimethylbenzyl) phenyl) benzotriazole (UV-234), 1 part of gamma-glycidoxypropyl trimethoxysilane, 0.5 part of solid paraffin and 0.5 part of acetic anhydride, mixing and plasticizing the materials by a melt mixing device with the processing temperature of 250-3500 ℃, carrying out open mill for 10 minutes by a two-roll mill, carrying out roll temperature of 350 ℃, roll rotating speed of 80r/min, hot press molding by the calender, carrying out heat preservation and pressure maintenance of 350 ℃ and 110MPa, cooling to 100 ℃, and demoulding to obtain the glass fiber modified polyamide.
As can be seen from Table 1, the glass fiber modified polyamide prepared by the invention has excellent tensile strength, and the added glass fiber improves the oxidation resistance and ageing resistance of the glass fiber so as to ensure the durability of the bolt sleeve.
The invention adopts a bottom-expanding design to improve the pulling resistance of a bolt sleeve 2, utilizes the friction force between a straight line section 5 of the bolt sleeve and duct piece concrete 1 and the end bearing force of a bottom-expanding section 6 to combine and bear force so as to improve the pulling resistance of the bolt sleeve 2, and is provided with a thread groove 7 with the outer edge of the bolt sleeve 2 so as to improve the bonding force between the bolt sleeve 2 and the duct piece concrete 1. And simultaneously, the bolt sleeve 2 is prevented from rotating in the process of fastening the bolts.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely illustrative and explanatory of the invention, as various modifications and additions may be made to the particular embodiments described, or in a similar manner, by those skilled in the art, without departing from the scope of the invention or exceeding the scope of the invention as defined in the claims.
Claims (9)
1. A sleeve made of glass fiber modified polyamide, characterized in that: the sleeve is used as a bolt sleeve (2), a mounting hand hole is formed in the duct piece concrete (1), a connecting bolt (3) is connected between the mounting hand hole and the bolt sleeve (2), the bolt sleeve comprises a bolt sleeve straight line section (5) and a bottom expanding section (6), the bottom of the bolt sleeve is provided with a bottom expanding design of the bottom expanding section, the bolt sleeve straight line section is provided with an anti-torsion bulge (8), the outer side of the bolt sleeve is provided with a thread groove (7), the inner side of the bolt sleeve is provided with an inner side screw thread (9), a positioning mark and a laser positioning base point are arranged in the duct piece concrete, and visual quick rough positioning and laser centering accurate positioning are adopted;
the glass fiber modified polyamide comprises the following raw materials in parts by weight: 50-60 parts of polyamide, 30-35 parts of glass fiber, 1-5 parts of compatilizer, 0.2-1 part of anti-aging agent, 0.2-1 part of ultraviolet absorber, 0.1-2 parts of coupling agent, 0.1-1 part of wetting agent and 0.1-2 parts of dehydrating agent;
the preparation method of the glass fiber modified polyamide comprises the following steps: weighing the components, mixing and plasticizing the polyamide, the glass fiber, the compatilizer, the anti-aging agent, the ultraviolet absorbent, the coupling agent, the moisturizing agent and the dehydrating agent through melt mixing equipment with the processing temperature of 250-3500 ℃, carrying out open mill for 10 minutes by a two-roll open mill, carrying out hot press molding by a calender at the roller temperature of 350 ℃ and the roller rotating speed of 80r/min, carrying out heat preservation and pressure maintaining for 2 hours at the die temperature of 350 ℃ under the pressure of 110MPa, cooling to 100 ℃, and demoulding to obtain the glass fiber modified polyamide.
2. The sleeve made of glass fiber modified polyamide according to claim 1, wherein: the polyamide is one or more of PA66, PA6, PA613, PA11, PA1010 and PA1313 mixed in any ratio.
3. The sleeve made of glass fiber modified polyamide according to claim 1, wherein: the glass fiber is glass powder, and the size of the glass fiber is 10-70um in diameter and 3-20mm in length.
4. The sleeve made of glass fiber modified polyamide according to claim 1, wherein: the compatilizer is one or more of SBS-g-MAH, ABS-g-MAH, EPDM-g-GMA, PE-g-GMA, POE-g-GMA and POE-g-MAH which are mixed according to any ratio.
5. The sleeve made of glass fiber modified polyamide according to claim 1, wherein: the anti-aging agent is any one or more of bis (2, 4-di-tert-butylphenyl) pentaerythritol diphosphite, tris (2, 4-di-tert-butyl) phosphite, 1,3, 5-tris (3, 5-di-tert-butyl, 4-hydroxybenzyl) s-triazine and tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester.
6. The sleeve made of glass fiber modified polyamide according to claim 1, wherein: the ultraviolet absorbent is any one or more of phenyl o-hydroxybenzoate, 2, 4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-n-octoxybenzophenone, 2- (2-hydroxy-5-methylphenyl) benzotriazole, 2- (2-hydroxy-3, 5 bis (a, a-dimethylbenzyl) phenyl) benzotriazole and 2- (2-hydroxy-3-tert-butyl-5-methylphenyl) -5-chlorobenzotriazole.
7. The sleeve made of glass fiber modified polyamide according to claim 1, wherein: the coupling agent is any one or more of gamma-aminopropyl trimethoxy silane, N- (beta-aminoethyl) -gamma-aminopropyl methyl dimethoxy silane, N- (beta-aminoethyl) -gamma-aminopropyl triethoxy silane, isopropyl dioleoyl (dioctyl phosphate acyloxy) titanate, bis (dioctyl oxygen pyrophosphato) ethylene titanate, chelate of bis (dioctyl oxygen pyrophosphato) ethylene titanate and triethanolamine, trimethyl aluminate triisopropyl aluminate, tribenzyl aluminate and gamma-glycidyl ether oxypropyl trimethoxy silane.
8. The sleeve made of glass fiber modified polyamide according to claim 1, wherein: the moisturizing agent is one or more of zinc stearate, N-ethylene bis stearamide, oleamide, N-butyl stearate, glycerol trihydroxystearate, microcrystalline paraffin, liquid paraffin, solid paraffin, polyethylene wax, oxidized polyethylene wax, methyl silicone oil, benzyl silicone oil, ethyl silicone oil, polyethylene, polypropylene and ABS resin which are mixed according to any ratio.
9. The sleeve made of glass fiber modified polyamide according to claim 1, wherein: the dehydrating agent is obtained by mixing any one or more of phosphorus pentoxide, trimethyl phosphite and acetic anhydride in any ratio.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211281265.4A CN115678270B (en) | 2022-10-19 | 2022-10-19 | Glass fiber modified polyamide and sleeve thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211281265.4A CN115678270B (en) | 2022-10-19 | 2022-10-19 | Glass fiber modified polyamide and sleeve thereof |
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| CN115678270A CN115678270A (en) | 2023-02-03 |
| CN115678270B true CN115678270B (en) | 2024-04-09 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2620123Y (en) * | 2003-03-11 | 2004-06-09 | 上海市城市建设设计研究院 | Preburied plastic bolt cover for steel reinforced concrete |
| JP2009035593A (en) * | 2007-07-31 | 2009-02-19 | Unitika Ltd | Glass fiber-reinforced polyamide resin composition |
| WO2013004763A1 (en) * | 2011-07-05 | 2013-01-10 | Smp Swiss Macro Polymers Ag | Assembly comprising a woven sleeve and hardening material for fastening an anchoring element in a drilled hole |
| JP2019085813A (en) * | 2017-11-09 | 2019-06-06 | Ｆｓテクニカル株式会社 | Adhesive anchor and installation method of adhesive anchor |
| CN111019334A (en) * | 2019-12-24 | 2020-04-17 | 上海中镭新材料科技有限公司 | Glass fiber reinforced polyamide material and preparation method and application thereof |
-
2022
- 2022-10-19 CN CN202211281265.4A patent/CN115678270B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2620123Y (en) * | 2003-03-11 | 2004-06-09 | 上海市城市建设设计研究院 | Preburied plastic bolt cover for steel reinforced concrete |
| JP2009035593A (en) * | 2007-07-31 | 2009-02-19 | Unitika Ltd | Glass fiber-reinforced polyamide resin composition |
| WO2013004763A1 (en) * | 2011-07-05 | 2013-01-10 | Smp Swiss Macro Polymers Ag | Assembly comprising a woven sleeve and hardening material for fastening an anchoring element in a drilled hole |
| JP2019085813A (en) * | 2017-11-09 | 2019-06-06 | Ｆｓテクニカル株式会社 | Adhesive anchor and installation method of adhesive anchor |
| CN111019334A (en) * | 2019-12-24 | 2020-04-17 | 上海中镭新材料科技有限公司 | Glass fiber reinforced polyamide material and preparation method and application thereof |
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| CN115678270A (en) | 2023-02-03 |
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