CN107337917A - A kind of polyurethane buffering block - Google Patents

A kind of polyurethane buffering block Download PDF

Info

Publication number
CN107337917A
CN107337917A CN201710628793.5A CN201710628793A CN107337917A CN 107337917 A CN107337917 A CN 107337917A CN 201710628793 A CN201710628793 A CN 201710628793A CN 107337917 A CN107337917 A CN 107337917A
Authority
CN
China
Prior art keywords
parts
polyurethane
raw material
buffering block
weight
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710628793.5A
Other languages
Chinese (zh)
Inventor
闫香琼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Yu Lin Auto Parts Co Ltd
Original Assignee
Anhui Yu Lin Auto Parts Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anhui Yu Lin Auto Parts Co Ltd filed Critical Anhui Yu Lin Auto Parts Co Ltd
Priority to CN201710628793.5A priority Critical patent/CN107337917A/en
Publication of CN107337917A publication Critical patent/CN107337917A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04Polyurethanes
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • C08K2003/2227Oxides; Hydroxides of metals of aluminium
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/30Sulfur-, selenium- or tellurium-containing compounds
    • C08K2003/3009Sulfides
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/011Nanostructured additives
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00Properties
    • C08L2201/08Stabilised against heat, light or radiation or oxydation
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/02Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/14Polymer mixtures characterised by other features containing polymeric additives characterised by shape
    • C08L2205/16Fibres; Fibrils

Landscapes

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

Abstract

The present invention relates to technical field of polymer materials, and in particular to a kind of polyurethane buffering block.This kind of polyurethane buffering block, is made up of the raw material below according to parts by weight:50 ~ 70 parts of modified polyurethane, 20 ~ 35 parts of spandex, 10 ~ 25 parts of bamboo fibre, 8 ~ 16 parts of carbon fiber, 3 ~ 11 parts of carbon black, 1 ~ 8 part of nano-aluminium oxide, smart 1 ~ 5 part of steel sand, 2 ~ 9 parts of polytetrafluoroethylene (PTFE), 5 ~ 12 parts of molybdenum disulfide, 1 ~ 7 part of 3 ~ 10 parts of acrylic acid, 5 ~ 10 parts of maleic anhydride grafted ethene butylene copolymer and stabilizer.This kind of polyurethane buffering block has well heat-resisting, oil resistant, anti-wear performance, and intensity is high, and production cost is low, service life length, suitable for industrialized production.

Description

A kind of polyurethane buffering block
Technical field
The present invention relates to technical field of polymer materials, and in particular to a kind of polyurethane buffering block.
Background technology
Damper is widely used as a kind of important damper element in various types of automobiles.Damping Device can effectively reduce, absorb the vibrations of road surface transmission, and for polyurethane buffering block as significant components in damper, it uses the longevity Life directly determines the service life of damper.However, the service life of existing polyurethane buffering block is shorter, can not meet to make Use demand.
The content of the invention
In order to solve the problems, such as to be mentioned in above-mentioned background, present invention aims at provide a kind of polyurethane buffering block.
To achieve the above object, the present invention provides following technical scheme:
A kind of polyurethane buffering block, is made up of the raw material below according to parts by weight:50 ~ 70 parts of modified polyurethane, spandex 20 ~ 35 Part, 10 ~ 25 parts of bamboo fibre, 8 ~ 16 parts of carbon fiber, 3 ~ 11 parts of carbon black, 1 ~ 8 part of nano-aluminium oxide, smart 1 ~ 5 part of steel sand, poly- four 2 ~ 9 parts of PVF, 5 ~ 12 parts of molybdenum disulfide, 3 ~ 10 parts of acrylic acid, 5 ~ 10 parts of maleic anhydride grafted ethene-butylene copolymer and steady Determine 1 ~ 7 part of agent.
As the further scheme of the present invention:The polyurethane buffering block is made up of the raw material below according to parts by weight: 53 ~ 66 parts of modified polyurethane, 24 ~ 30 parts of spandex, 12 ~ 20 parts of bamboo fibre, 10 ~ 15 parts of carbon fiber, 5 ~ 10 parts of carbon black, the oxygen of nanometer three Change 2 ~ 6 parts of two aluminium, smart 2 ~ 4 parts of steel sand, 3 ~ 7 parts of polytetrafluoroethylene (PTFE), 7 ~ 10 parts of molybdenum disulfide, 5 ~ 8 parts of acrylic acid, maleic anhydride connects 2 ~ 6 parts of 6 ~ 9 parts of branch ethylene-butene copolymer and stabilizer.
As the further scheme of the present invention:The polyurethane buffering block is made up of the raw material below according to parts by weight: 60 parts of modified polyurethane, 25 parts of spandex, 15 parts of bamboo fibre, 12 parts of carbon fiber, 8 parts of carbon black, 5 parts of nano-aluminium oxide, smart steel 3 parts of sand, 6 parts of polytetrafluoroethylene (PTFE), 9 parts of molybdenum disulfide, 6 parts of acrylic acid, 8 parts of maleic anhydride grafted ethene-butylene copolymer and steady Determine 5 parts of agent.
As the further scheme of the present invention:The modified polyurethane of the polyurethane buffering block is by below according to parts by weight Raw material composition:1 ~ 7 part of 60 ~ 70 parts of polyurethane, 20 ~ 30 parts of polysulfone resin, 8 ~ 16 parts of polyarylsulfone (PAS) and silane coupler.
As the further scheme of the present invention:The modified polyurethane of the polyurethane buffering block is by below according to parts by weight Raw material composition:5 parts of 65 parts of polyurethane, 25 parts of polysulfone resin, 10 parts of polyarylsulfone (PAS) and silane coupler.
As the further scheme of the present invention:The preparation method of the modified polyurethane of the polyurethane buffering block includes following Step:
1)Dispensing is carried out according to raw material composition and its parts by weight proportioning;
2)Polyurethane and polysulfone resin are added in mixer and stirred, obtains mixture A;
3)Polyarylsulfone (PAS) is heated to 300 DEG C, it is become molten state, pours into mixer, while silane coupler is added and stirred 3 ~ 5min of stirring in machine is mixed, is stood, is slowly cooled to room temperature and produces.
The polyurethane buffering block of the present invention is by the polyarylsulfone (PAS) of molten state and silane coupler by polyurethane and polysulfone resin Gluing is together so that the characteristics exhibit that polysulfone resin is heat-resisting, oil resistant, intensity are high causes poly- on polyurethane buffering block Urethane possesses excellent anti-wear performance.In addition, the polyurethane buffering block raw material of the present invention is cheap and easy to get, production cost is low, uses Long lifespan, suitable for industrialized production.
Embodiment
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, Obviously, described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Based in the present invention Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all Belong to the scope of protection of the invention.
Embodiment 1
In the embodiment of the present invention, a kind of polyurethane buffering block, it is made up of the raw material below according to parts by weight:Modified polyurethane 60 Part, 25 parts of spandex, 15 parts of bamboo fibre, 12 parts of carbon fiber, 8 parts of carbon black, 5 parts of nano-aluminium oxide, smart 3 parts of steel sand, polytetrafluoro 5 parts of 6 parts of ethene, 9 parts of molybdenum disulfide, 6 parts of acrylic acid, 8 parts of maleic anhydride grafted ethene-butylene copolymer and stabilizer.
The modified polyurethane of polyurethane buffering block is made up of the raw material below according to parts by weight:65 parts of polyurethane, polysulfones 5 parts of 25 parts of resin, 10 parts of polyarylsulfone (PAS) and silane coupler.
The preparation method of the modified polyurethane of polyurethane buffering block comprises the following steps:
1)Dispensing is carried out according to raw material composition and its parts by weight proportioning;
2)Polyurethane and polysulfone resin are added in mixer and stirred, obtains mixture A;
3)Polyarylsulfone (PAS) is heated to 300 DEG C, it is become molten state, pours into mixer, while silane coupler is added and stirred Mix and 5min is stirred in machine, stand, be slowly cooled to room temperature and produce.
Comparative example 1
It is with the formula difference of embodiment 1, modified polyurethane is not added with comparative example 1, adds polyurethane, remaining raw material It is identical.
Formula according to embodiment 1, comparative example 1 makes polyurethane buffering block, and control group makes polyurethane using polyurethane Buffer stopper, and testing standard part is processed into respectively, anti-dynamic fatigue property test is carried out according to national standard GB/T15584-1995, is examined It is as shown in table 1 to survey result:
The testing result of table 1
Group Embodiment 1 Comparative example 1 Control group
Tensile strength/MPa 4.5 3.6 3.1
Preload force/N 5100 5100 5100
Timeliness number/ten thousand time 220 185 168
Failure load/N 4900 4500 4100
Oil resistivity(Expansion rate after oil immersion bubble)Detected according to the standards of ASTM D 471, unit %;
Heat resistance(Heat ageing coefficient)Detected according to national standard GB-T 3512-2001, unit %;
Testing result is as shown in table 2:
The testing result of table 2
Group Embodiment 1 Comparative example 1 Control group
Oil resistivity 4.8 5.7 6.2
Heat resistance 0.54 0.68 0.75
Can be seen that by Tables 1 and 2 data can effectively improve the intensity, wear-resisting of polyurethane buffering block using modified polyurethane Property, heat resistance and oil resistivity, extend its service life.
Embodiment 2
In the embodiment of the present invention, a kind of polyurethane buffering block, it is made up of the raw material below according to parts by weight:Modified polyurethane 70 Part, 35 parts of spandex, 25 parts of bamboo fibre, 16 parts of carbon fiber, 11 parts of carbon black, 8 parts of nano-aluminium oxide, smart 5 parts of steel sand, polytetrafluoro 7 parts of 9 parts of ethene, 12 parts of molybdenum disulfide, 10 parts of acrylic acid, 10 parts of maleic anhydride grafted ethene-butylene copolymer and stabilizer.
The modified polyurethane of polyurethane buffering block is made up of the raw material below according to parts by weight:65 parts of polyurethane, polysulfones 5 parts of 25 parts of resin, 10 parts of polyarylsulfone (PAS) and silane coupler.
The preparation method of the modified polyurethane of polyurethane buffering block comprises the following steps:
1)Dispensing is carried out according to raw material composition and its parts by weight proportioning;
2)Polyurethane and polysulfone resin are added in mixer and stirred, obtains mixture A;
3)Polyarylsulfone (PAS) is heated to 300 DEG C, it is become molten state, pours into mixer, while silane coupler is added and stirred Mix and 5min is stirred in machine, stand, be slowly cooled to room temperature and produce.
Embodiment 3
In the embodiment of the present invention, a kind of polyurethane buffering block, it is made up of the raw material below according to parts by weight:Modified polyurethane 50 Part, 20 parts of spandex, 10 parts of bamboo fibre, 8 parts of carbon fiber, 3 parts of carbon black, 1 part of nano-aluminium oxide, smart 1 part of steel sand, polytetrafluoroethyl-ne 1 part of 2 parts of alkene, 5 parts of molybdenum disulfide, 3 parts of acrylic acid, 5 parts of maleic anhydride grafted ethene-butylene copolymer and stabilizer.
The modified polyurethane of polyurethane buffering block is made up of the raw material below according to parts by weight:65 parts of polyurethane, polysulfones 5 parts of 25 parts of resin, 10 parts of polyarylsulfone (PAS) and silane coupler.
The preparation method of the modified polyurethane of polyurethane buffering block comprises the following steps:
1)Dispensing is carried out according to raw material composition and its parts by weight proportioning;
2)Polyurethane and polysulfone resin are added in mixer and stirred, obtains mixture A;
3)Polyarylsulfone (PAS) is heated to 300 DEG C, it is become molten state, pours into mixer, while silane coupler is added and stirred Mix and 5min is stirred in machine, stand, be slowly cooled to room temperature and produce.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling Change is included in the present invention.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped Containing an independent technical scheme, this narrating mode of specification is only that those skilled in the art should for clarity Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art It is appreciated that other embodiment.

Claims (6)

1. a kind of polyurethane buffering block, it is characterised in that be made up of the raw material below according to parts by weight:Modified polyurethane 50 ~ 70 parts, 20 ~ 35 parts of spandex, 10 ~ 25 parts of bamboo fibre, 8 ~ 16 parts of carbon fiber, 3 ~ 11 parts of carbon black, 1 ~ 8 part of nano-aluminium oxide, essence 1 ~ 5 part of steel sand, 2 ~ 9 parts of polytetrafluoroethylene (PTFE), 5 ~ 12 parts of molybdenum disulfide, 3 ~ 10 parts of acrylic acid, maleic anhydride grafted ethene-butylene is common 1 ~ 7 part of 5 ~ 10 parts of polymers and stabilizer.
2. polyurethane buffering block according to claim 1, it is characterised in that by below according to the raw material group of parts by weight Into:53 ~ 66 parts of modified polyurethane, 24 ~ 30 parts of spandex, 12 ~ 20 parts of bamboo fibre, 10 ~ 15 parts of carbon fiber, 5 ~ 10 parts of carbon black, nanometer 2 ~ 6 parts of alundum (Al2O3), smart 2 ~ 4 parts of steel sand, 3 ~ 7 parts of polytetrafluoroethylene (PTFE), 7 ~ 10 parts of molybdenum disulfide, 5 ~ 8 parts of acrylic acid, maleic acid 2 ~ 6 parts of acid anhydride grafted ethene -6 ~ 9 parts of butylene copolymer and stabilizer.
3. polyurethane buffering block according to claim 1, it is characterised in that by below according to the raw material group of parts by weight Into:60 parts of modified polyurethane, 25 parts of spandex, 15 parts of bamboo fibre, 12 parts of carbon fiber, 8 parts of carbon black, 5 parts of nano-aluminium oxide, essence 3 parts of steel sand, 6 parts of polytetrafluoroethylene (PTFE), 9 parts of molybdenum disulfide, 6 parts of acrylic acid, 8 parts of maleic anhydride grafted ethene-butylene copolymer and 5 parts of stabilizer.
4. according to any described polyurethane buffering blocks of claim 1-3, it is characterised in that modified polyurethane is by below according to weight Measure the raw material composition of number:1 ~ 7 part of 60 ~ 70 parts of polyurethane, 20 ~ 30 parts of polysulfone resin, 8 ~ 16 parts of polyarylsulfone (PAS) and silane coupler.
5. polyurethane buffering block according to claim 4, it is characterised in that modified polyurethane is by below according to parts by weight Raw material composition:5 parts of 65 parts of polyurethane, 25 parts of polysulfone resin, 10 parts of polyarylsulfone (PAS) and silane coupler.
6. according to any described polyurethane buffering blocks of claim 1-3, it is characterised in that the preparation method bag of modified polyurethane Include following steps:
1)Dispensing is carried out according to raw material composition and its parts by weight proportioning;
2)Polyurethane and polysulfone resin are added in mixer and stirred, obtains mixture A;
3)Polyarylsulfone (PAS) is heated to 300 DEG C, it is become molten state, pours into mixer, while silane coupler is added and stirred 3 ~ 5min of stirring in machine is mixed, is stood, is slowly cooled to room temperature and produces.
CN201710628793.5A 2017-07-28 2017-07-28 A kind of polyurethane buffering block Pending CN107337917A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710628793.5A CN107337917A (en) 2017-07-28 2017-07-28 A kind of polyurethane buffering block

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710628793.5A CN107337917A (en) 2017-07-28 2017-07-28 A kind of polyurethane buffering block

Publications (1)

Publication Number Publication Date
CN107337917A true CN107337917A (en) 2017-11-10

Family

ID=60217640

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710628793.5A Pending CN107337917A (en) 2017-07-28 2017-07-28 A kind of polyurethane buffering block

Country Status (1)

Country Link
CN (1) CN107337917A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112341790A (en) * 2020-09-16 2021-02-09 常州工程职业技术学院 Multilayer damping fin for waste rubber powder vehicle and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1054779A (en) * 1990-03-08 1991-09-25 B.F.谷德里奇公司 Fibre-reinforced thermoplastic molding compoistions
CN102660113A (en) * 2012-04-11 2012-09-12 黎明化工研究院 Thermoplastic cellular polyurethane elastomer and preparation method thereof
CN103087463A (en) * 2013-01-28 2013-05-08 奇瑞汽车股份有限公司 Light composite material
CN104164078A (en) * 2014-07-16 2014-11-26 宁国中辰密封件有限公司 Car engine buffer block

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1054779A (en) * 1990-03-08 1991-09-25 B.F.谷德里奇公司 Fibre-reinforced thermoplastic molding compoistions
CN102660113A (en) * 2012-04-11 2012-09-12 黎明化工研究院 Thermoplastic cellular polyurethane elastomer and preparation method thereof
CN103087463A (en) * 2013-01-28 2013-05-08 奇瑞汽车股份有限公司 Light composite material
CN104164078A (en) * 2014-07-16 2014-11-26 宁国中辰密封件有限公司 Car engine buffer block

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112341790A (en) * 2020-09-16 2021-02-09 常州工程职业技术学院 Multilayer damping fin for waste rubber powder vehicle and preparation method thereof
CN112341790B (en) * 2020-09-16 2022-04-01 常州工程职业技术学院 Multilayer damping fin for waste rubber powder vehicle and preparation method thereof

Similar Documents

Publication Publication Date Title
CN103483836B (en) Modified asphalt and preparation method thereof as well as mixture containing same
CN101851452A (en) Low-temperature regional water-based damping coating and preparation method thereof
CN108164822A (en) One kind is low to distribute low smell glass fiber reinforced polypropylene composite material and preparation method thereof
CN103773008A (en) High-viscosity modified asphalt and preparation method thereof
CN109650781A (en) A kind of high frictional resistance thin overlay asphalt of middle low temperature warm mix and preparation method thereof
CN106189961B (en) A kind of footwear low temperature resistant EVA adhesives and preparation method thereof
CN113493606A (en) Bio-based nylon composition for automobile pipelines and preparation method thereof
CN104403238A (en) Low-temperature resistant modified fluoro-rubber mixed compound and preparation method
CN107353636A (en) A kind of high strength glass fiber strengthens nylon material
CN107337917A (en) A kind of polyurethane buffering block
CN108440977B (en) Modified asphalt for high-modulus anti-rutting concrete, modifier and preparation method
CN113583459A (en) Thermosetting epoxy asphalt material for steel bridge deck and preparation method thereof
CN116218145B (en) Aging-resistant glass fiber reinforced plastic composite material and preparation method thereof
CN110951432B (en) Epoxy resin building structural adhesive and preparation method thereof
CN104098810B (en) A kind of composition and in the application prepared in damping material and a kind of damping material and preparation method thereof
CN102424715A (en) Hollow glass bead filled modified HIPS material and preparation method thereof
CN112322057A (en) High-viscosity rubber asphalt and preparation method thereof
CN103360758A (en) Anti-aging PA-PTFE plastic alloy
CN106433115A (en) Modified liquid rubber toughed nylon material for bearing retainer and preparation method
CN112280325B (en) Anti-cracking asphalt and preparation method thereof
CN104877195A (en) Rubber for buffering supporting piece in automobile
CN112408865B (en) Rubber asphalt concrete
CN108165001A (en) The good appearance polyamide compoiste material of low water absorption
CN109401312A (en) A kind of corrosion-resistant composite membrane of the elbow for engineering plastics
KR100315456B1 (en) Chloroprene rubber composition having good thermal resistance and abrasion resistance

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20171110

WD01 Invention patent application deemed withdrawn after publication