CN107083018A - A kind of boron fibre reinforced polyether ether ketone resin composite materials and preparation method thereof - Google Patents

A kind of boron fibre reinforced polyether ether ketone resin composite materials and preparation method thereof Download PDF

Info

Publication number
CN107083018A
CN107083018A CN201710426356.5A CN201710426356A CN107083018A CN 107083018 A CN107083018 A CN 107083018A CN 201710426356 A CN201710426356 A CN 201710426356A CN 107083018 A CN107083018 A CN 107083018A
Authority
CN
China
Prior art keywords
parts
boron fibre
resin composite
composite materials
fibre reinforced
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
CN201710426356.5A
Other languages
Chinese (zh)
Inventor
苏亚城
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.)
Dongguan Lianzhou Intellectual Property Operation and Management Co Ltd
Original Assignee
Dongguan Lianzhou Intellectual Property Operation and Management 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 Dongguan Lianzhou Intellectual Property Operation and Management Co Ltd filed Critical Dongguan Lianzhou Intellectual Property Operation and Management Co Ltd
Priority to CN201710426356.5A priority Critical patent/CN107083018A/en
Publication of CN107083018A publication Critical patent/CN107083018A/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
    • C08L61/00Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
    • C08L61/04Condensation polymers of aldehydes or ketones with phenols only
    • C08L61/16Condensation polymers of aldehydes or ketones with phenols only of ketones with phenols
    • 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
    • C08K2201/002Physical properties
    • C08K2201/003Additives being defined by their diameter
    • 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
    • C08K2201/002Physical properties
    • C08K2201/004Additives being defined by their length
    • 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
    • C08L2205/03Polymer 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

Abstract

The invention discloses a kind of boron fibre reinforced polyether ether ketone resin composite materials, in parts by weight, including following components:20 50 parts of polyether-ether-ketone, 35 parts of boron fibre, 5 10 parts of polyurethane, 48 parts of epoxy resin, Cellulose nanocrystal must be 1.5 3 parts, 12 parts of lubricant, 0.5 1.5 parts of antioxidant, 13 parts of plasticizer, 2.5 3 parts of stabilizer.The invention also discloses the preparation method of the polyether-ether-ketone resin composite.The polyether-ether-ketone resin composite that the present invention is provided, with higher intensity, toughness is big, and heat resistance is strong; wear-resisting, excellent in mechanical performance, cost is low, and preparation method is simple; it is low for equipment requirements, it is nontoxic, discharged in preparation process without noxious material, be conducive to environmental protection.

Description

A kind of boron fibre reinforced polyether ether ketone resin composite materials and preparation method thereof
Technical field:
The present invention relates to field of polymer composite material, a kind of boron fibre reinforced polyether ether ketone resin compounded is specifically related to Material.
Background technology:
Polyether-ether-ketone (PEEK) as a kind of thermoplastic engineering plastic of all aromatic hemicrystalline, due to its have it is resistance to The excellent properties such as heat, high intensity, corrosion-resistant, fire-retardant, rub resistance, radiation hardness, insulation, processing characteristics be good, it is possible to noted Penetrate, extrude, being molded, being blow molded, melt drawing, curtain coating, foaming, the processing of the method such as electrostatic spraying and be widely used in industry, electricity The fields such as son, aviation and automobile.But pure PEEK resins fragility is big, cutting performance is poor, temperature in use is relatively low and expensive The shortcomings of, it is difficult to different use requirements are met, the modification of polyether-ether-ketone is studied this promotes people.
Boron fibre has unique performance in current existing reinforcing fiber, and outstanding others compressive strength is that its stretching is strong 2 times of degree, are that other reinforcing fibers are not yet seen, its intensity height, light weight, physical property are good, can be entered towards industrial product aspect Row exploitation.
The content of the invention:
It is an object of the invention to provide a kind of boron fibre reinforced polyether ether ketone resin composite materials, with higher intensity, Toughness is big, and heat resistance is strong, and wear-resisting, excellent in mechanical performance, cost is low, and preparation method is simple, low for equipment requirements, nontoxic, system Without noxious material release during standby, be conducive to environmental protection.
It is a further object to provide the preparation method of the boron fibre reinforced polyether ether ketone resin composite materials.
To achieve the above object, the present invention uses following technical scheme:
A kind of boron fibre reinforced polyether ether ketone resin composite materials, in parts by weight, including following components:
20-50 parts of polyether-ether-ketone, 3-5 parts of boron fibre,
5-10 parts of polyurethane, 4-8 parts of epoxy resin,
Cellulose nanocrystal must be 1.5-3 parts, 1-2 parts of lubricant,
0.5-1.5 parts of antioxidant, 1-3 parts of plasticizer, 2.5-3 parts of stabilizer.
As the preferred of above-mentioned technical proposal, a kind of boron fibre reinforced polyether ether ketone resin composite materials, in parts by weight, Including following components:
35 parts of polyether-ether-ketone, 3.3 parts of boron fibre,
6 parts of polyurethane, 5 parts of epoxy resin,
Cellulose nanocrystal must be 2.5 parts, 1.8 parts of lubricant,
1 part of antioxidant, 2 parts of plasticizer, 2.6 parts of stabilizer.
As the preferred of above-mentioned technical proposal, a diameter of 500-800nm of the boron fibre, length is 1-2 μm.
As the preferred of above-mentioned technical proposal, the polyurethane is EU.
As the preferred of above-mentioned technical proposal, a diameter of 1-2 μm of the Cellulose nanocrystal palpus, length is 30-50 μm.
As the preferred of above-mentioned technical proposal, the lubricant is fatty acid amide, Tissuemat E, OPE, hard One or more mixing in glycerol.
As the preferred of above-mentioned technical proposal, the antioxidant is the mixing of polyphenol antioxidant and phosphite ester kind antioxidant Thing.
As the preferred of above-mentioned technical proposal, the plasticizer is phthalate, epoxidized soybean oil, benzenetricarboxylic acid ester One or more mixing in class.
As the preferred of above-mentioned technical proposal, the stabilizer be fatty acid zinc, beta-diketon magnesium, β-amino crotonate, One or more mixing in thiourea derivative.
A kind of preparation method of boron fibre reinforced polyether ether ketone resin composite materials, comprises the following steps:
(1) polyurethane, boron fibre, Cellulose nanocrystal palpus, epoxy resin are added in high-speed kneading machine, in 120- At 150 DEG C, 10-15min is mediated, polyether-ether-ketone, lubricant, antioxidant, plasticizer, stabilizer is continuously added, 10- is mediated 20min, obtains mixed material;
(2) mixed material for obtaining step (1) is after double screw extruder extruding pelletization, by injection machine injection molding, Obtain boron fibre reinforced polyether ether ketone resin composite materials.
The invention has the advantages that:
The present invention carries out surface modification using polyurethane, epoxy resin to Cellulose nanocrystal palpus and boron fibre first, from And increasing its compatibility with polyether-ether-ketone, the boron fibre reinforced polyether ether ketone resin composite materials that the present invention is provided have higher Intensity, toughness is big, and heat resistance is strong, and wear-resisting, excellent in mechanical performance, cost is low, and preparation method is simple, low for equipment requirements, It is nontoxic, discharged in preparation process without noxious material, be conducive to environmental protection.
Embodiment:
In order to be better understood from the present invention, below by embodiment, the present invention is further described, and embodiment is served only for solution The present invention is released, any restriction will not be constituted to the present invention.
Embodiment 1
A kind of boron fibre reinforced polyether ether ketone resin composite materials, in parts by weight, including following components:
20 parts of polyether-ether-ketone, 3 parts of boron fibre,
5 parts of polyurethane, 4 parts of epoxy resin,
Cellulose nanocrystal must be 1.5 parts, 1 part of lubricant,
0.5 part of antioxidant, 1 part of plasticizer, 2.5 parts of stabilizer.
Its preparation method comprises the following steps:
(1) polyurethane, boron fibre, Cellulose nanocrystal palpus, epoxy resin are added in high-speed kneading machine, at 120 DEG C Under, 10min is mediated, polyether-ether-ketone, lubricant, antioxidant, plasticizer, stabilizer is continuously added, 10min is mediated, is mixed Material;
(2) mixed material for obtaining step (1) is after double screw extruder extruding pelletization, by injection machine injection molding, Obtain boron fibre reinforced polyether ether ketone resin composite materials.
Embodiment 2
A kind of boron fibre reinforced polyether ether ketone resin composite materials, in parts by weight, including following components:
50 parts of polyether-ether-ketone, 5 parts of boron fibre,
10 parts of polyurethane, 8 parts of epoxy resin,
Cellulose nanocrystal must be 3 parts, 2 parts of lubricant,
1.5 parts of antioxidant, 3 parts of plasticizer, 3 parts of stabilizer.
Its preparation method comprises the following steps:
(1) polyurethane, boron fibre, Cellulose nanocrystal palpus, epoxy resin are added in high-speed kneading machine, at 150 DEG C Under, 15min is mediated, polyether-ether-ketone, lubricant, antioxidant, plasticizer, stabilizer is continuously added, 20min is mediated, is mixed Material;
(2) mixed material for obtaining step (1) is after double screw extruder extruding pelletization, by injection machine injection molding, Obtain boron fibre reinforced polyether ether ketone resin composite materials.
Embodiment 3
A kind of boron fibre reinforced polyether ether ketone resin composite materials, in parts by weight, including following components:
30 parts of polyether-ether-ketone, 3.5 parts of boron fibre,
6 parts of polyurethane, 5 parts of epoxy resin,
Cellulose nanocrystal must be 2 parts, 1.2 parts of lubricant,
0.7 part of antioxidant, 1.5 parts of plasticizer, 2.6 parts of stabilizer.
Its preparation method comprises the following steps:
(1) polyurethane, boron fibre, Cellulose nanocrystal palpus, epoxy resin are added in high-speed kneading machine, at 130 DEG C Under, 11min is mediated, polyether-ether-ketone, lubricant, antioxidant, plasticizer, stabilizer is continuously added, 12min is mediated, is mixed Material;
(2) mixed material for obtaining step (1) is after double screw extruder extruding pelletization, by injection machine injection molding, Obtain boron fibre reinforced polyether ether ketone resin composite materials.
Embodiment 4
A kind of boron fibre reinforced polyether ether ketone resin composite materials, in parts by weight, including following components:
35 parts of polyether-ether-ketone, 4 parts of boron fibre,
7 parts of polyurethane, 6 parts of epoxy resin,
Cellulose nanocrystal must be 2.3 parts, 1.4 parts of lubricant,
0.9 part of antioxidant, 1.8 parts of plasticizer, 2.7 parts of stabilizer.
Its preparation method comprises the following steps:
(1) polyurethane, boron fibre, Cellulose nanocrystal palpus, epoxy resin are added in high-speed kneading machine, at 135 DEG C Under, 12min is mediated, polyether-ether-ketone, lubricant, antioxidant, plasticizer, stabilizer is continuously added, 14min is mediated, is mixed Material;
(2) mixed material for obtaining step (1) is after double screw extruder extruding pelletization, by injection machine injection molding, Obtain boron fibre reinforced polyether ether ketone resin composite materials.
Embodiment 5
A kind of boron fibre reinforced polyether ether ketone resin composite materials, in parts by weight, including following components:
40 parts of polyether-ether-ketone, 4.5 parts of boron fibre,
8 parts of polyurethane, 7 parts of epoxy resin,
Cellulose nanocrystal must be 2.6 parts, 1.6 parts of lubricant,
1.1 parts of antioxidant, 2.5 parts of plasticizer, 2.8 parts of stabilizer.
Its preparation method comprises the following steps:
(1) polyurethane, boron fibre, Cellulose nanocrystal palpus, epoxy resin are added in high-speed kneading machine, at 140 DEG C Under, 14min is mediated, polyether-ether-ketone, lubricant, antioxidant, plasticizer, stabilizer is continuously added, 16min is mediated, is mixed Material;
(2) mixed material for obtaining step (1) is after double screw extruder extruding pelletization, by injection machine injection molding, Obtain boron fibre reinforced polyether ether ketone resin composite materials.
Embodiment 6
A kind of boron fibre reinforced polyether ether ketone resin composite materials, in parts by weight, including following components:
45 parts of polyether-ether-ketone, 4.8 parts of boron fibre,
9 parts of polyurethane, 7 parts of epoxy resin,
Cellulose nanocrystal must be 1.3 parts, 1.8 parts of lubricant,
1.3 parts of antioxidant, 2.8 parts of plasticizer, 2.9 parts of stabilizer.
Its preparation method comprises the following steps:
(1) polyurethane, boron fibre, Cellulose nanocrystal palpus, epoxy resin are added in high-speed kneading machine, at 145 DEG C Under, 14min is mediated, polyether-ether-ketone, lubricant, antioxidant, plasticizer, stabilizer is continuously added, 18min is mediated, is mixed Material;
(2) mixed material for obtaining step (1) is after double screw extruder extruding pelletization, by injection machine injection molding, Obtain boron fibre reinforced polyether ether ketone resin composite materials.

Claims (10)

1. a kind of boron fibre reinforced polyether ether ketone resin composite materials, it is characterised in that in parts by weight, including following components:
20-50 parts of polyether-ether-ketone, 3-5 parts of boron fibre,
5-10 parts of polyurethane, 4-8 parts of epoxy resin,
Cellulose nanocrystal must be 1.5-3 parts, 1-2 parts of lubricant,
0.5-1.5 parts of antioxidant, 1-3 parts of plasticizer, 2.5-3 parts of stabilizer.
2. a kind of boron fibre reinforced polyether ether ketone resin composite materials as claimed in claim 1, it is characterised in that with parts by weight Meter, including following components:
35 parts of polyether-ether-ketone, 3.3 parts of boron fibre,
6 parts of polyurethane, 5 parts of epoxy resin,
Cellulose nanocrystal must be 2.5 parts, 1.8 parts of lubricant,
1 part of antioxidant, 2 parts of plasticizer, 2.6 parts of stabilizer.
3. a kind of boron fibre reinforced polyether ether ketone resin composite materials as claimed in claim 1, it is characterised in that the boron is fine A diameter of 500-800nm of dimension, length is 1-2 μm.
4. a kind of boron fibre reinforced polyether ether ketone resin composite materials as claimed in claim 1, it is characterised in that the poly- ammonia Ester is EU.
5. a kind of boron fibre reinforced polyether ether ketone resin composite materials as claimed in claim 1, it is characterised in that the fiber A diameter of 1-2 μm of plain nano whisker, length is 30-50 μm.
6. a kind of boron fibre enhancing polyether ketone resin composite as claimed in claim 1, it is characterised in that the lubricant For the one or more mixing in fatty acid amide, Tissuemat E, OPE, tristerin.
7. a kind of boron fibre reinforced polyether ether ketone resin composite materials as claimed in claim 1, it is characterised in that the antioxygen Agent is the mixture of polyphenol antioxidant and phosphite ester kind antioxidant.
8. a kind of boron fibre reinforced polyether ether ketone resin composite materials as claimed in claim 1, it is characterised in that the plasticising Agent is one or more mixing in phthalate, epoxidized soybean oil, benzenetricarboxylic acid esters.
9. a kind of boron fibre reinforced polyether ether ketone resin composite materials as claimed in claim 1, it is characterised in that the stabilization Agent is one or more mixing in fatty acid zinc, beta-diketon magnesium, β-amino crotonate, thiourea derivative.
10. a kind of preparation of boron fibre reinforced polyether ether ketone resin composite materials as described in as described in claim 1 to 9 is any Method, it is characterised in that comprise the following steps:
(1) polyurethane, boron fibre, Cellulose nanocrystal palpus, epoxy resin are added in high-speed kneading machine, at 120-150 DEG C Under, 10-15min is mediated, polyether-ether-ketone, lubricant, antioxidant, plasticizer, stabilizer is continuously added, 10-20min is mediated, obtains To mixed material;
(2) mixed material for obtaining step (1), by injection machine injection molding, is obtained after double screw extruder extruding pelletization Boron fibre reinforced polyether ether ketone resin composite materials.
CN201710426356.5A 2017-06-08 2017-06-08 A kind of boron fibre reinforced polyether ether ketone resin composite materials and preparation method thereof Pending CN107083018A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710426356.5A CN107083018A (en) 2017-06-08 2017-06-08 A kind of boron fibre reinforced polyether ether ketone resin composite materials and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710426356.5A CN107083018A (en) 2017-06-08 2017-06-08 A kind of boron fibre reinforced polyether ether ketone resin composite materials and preparation method thereof

Publications (1)

Publication Number Publication Date
CN107083018A true CN107083018A (en) 2017-08-22

Family

ID=59608536

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710426356.5A Pending CN107083018A (en) 2017-06-08 2017-06-08 A kind of boron fibre reinforced polyether ether ketone resin composite materials and preparation method thereof

Country Status (1)

Country Link
CN (1) CN107083018A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109627682A (en) * 2018-12-27 2019-04-16 衢州寰宇信息咨询有限公司 A kind of polyether-ether-ketone resin composite material and preparation method
CN110818877A (en) * 2019-10-16 2020-02-21 刘勇 PEEK-nanometer SiO2Composite doped polyurethane foam buoyancy material
CN112239585A (en) * 2020-10-16 2021-01-19 广东正浩新材料科技有限公司 Method for preparing polyether-ether-ketone resin bar

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103930461A (en) * 2011-12-27 2014-07-16 东丽株式会社 Epoxy resin composition for fiber-reinforced composite materials, prepreg, and fiber-reinforced composite material
CN104292439A (en) * 2014-10-07 2015-01-21 桂林理工大学 Preparation method of sisal hemp cellulose nanowhisker/polylactic acid biological composite material
CN106280461A (en) * 2016-09-13 2017-01-04 北京市射线应用研究中心 A kind of high temperature resistant neutron and gamma ray shielding composite and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103930461A (en) * 2011-12-27 2014-07-16 东丽株式会社 Epoxy resin composition for fiber-reinforced composite materials, prepreg, and fiber-reinforced composite material
CN104292439A (en) * 2014-10-07 2015-01-21 桂林理工大学 Preparation method of sisal hemp cellulose nanowhisker/polylactic acid biological composite material
CN106280461A (en) * 2016-09-13 2017-01-04 北京市射线应用研究中心 A kind of high temperature resistant neutron and gamma ray shielding composite and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109627682A (en) * 2018-12-27 2019-04-16 衢州寰宇信息咨询有限公司 A kind of polyether-ether-ketone resin composite material and preparation method
CN110818877A (en) * 2019-10-16 2020-02-21 刘勇 PEEK-nanometer SiO2Composite doped polyurethane foam buoyancy material
CN112239585A (en) * 2020-10-16 2021-01-19 广东正浩新材料科技有限公司 Method for preparing polyether-ether-ketone resin bar

Similar Documents

Publication Publication Date Title
CN104845288B (en) High-toughness glass fiber reinforced polymer alloy and preparation method thereof
CN103709703A (en) Recycled carbon fiber reinforced thermoplastic resin composite material and preparation method thereof
CN107083018A (en) A kind of boron fibre reinforced polyether ether ketone resin composite materials and preparation method thereof
RU2665390C2 (en) Composition of reinforced polyalkylene terephthalate, preparation and use thereof
CN102108209A (en) Warpage-resistant antistatic reinforced nylon 66 composite and preparation method thereof
KR101383621B1 (en) Recycled polypropylene polymer composite materal composition with improved tensile strength and flexural rigidity and manufacturing method thereof
CN104371228A (en) Regenerated carbon fiber reinforced polyvinylidene fluoride (PVDF) composite material and preparation method thereof
CN106810857A (en) A kind of composition of modified fiberglass reinforced PA 6 and preparation method thereof
CN103387746A (en) Fiber- reinforced polyphenylene sulfide/polyamide alloy material and preparation method thereof
CH708727A2 (en) Carbon fiber reinforced plastic molding compounds.
CN104371229A (en) High-wettability and high-strength continuous carbon fiber reinforced polyvinylidene fluoride (PVDF) composite material and preparation method thereof
JPWO2013183636A1 (en) Molding material, molded body thereof, and method for producing the molded body
CN106810757A (en) A kind of improving floats fine fiber glass reinforced polypropylene composition and preparation method thereof
CN103173015A (en) High-strength PPS (polyphenylene sulfide) material and its preparation method
CN106479133A (en) A kind of scratch-resistant composite and preparation method thereof
CN105504724A (en) Automobile interior material added with tourmaline powder
CN103772839B (en) A kind of polystyrene composite plastic and preparation method thereof
CN106810755A (en) A kind of modified fiber glass reinforced polypropylene composition and preparation method thereof
CN105778212A (en) Glass fiber/thermoplastic plastic granules and method for preparing same
CN101696303B (en) Novel compatibilized polypropylene/glass fiber composite material and preparation method thereof
DE2144687B2 (en) Curable epoxy resins as an additive to thermoplastic synthetic resin compounds
CN111234471A (en) PBT composite material with low linear thermal expansion coefficient and preparation method thereof
Ge et al. The effect of modifying agents on the mechanical properties of straw flour/waste plastic composite materials
CN107604469A (en) A kind of nano combined foaming rope and preparation method
CN116063824A (en) High-strength carbon fiber modified polyester thermoplastic elastomer and preparation method thereof

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
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20170822