CN108239388A - It is a kind of can laser activation high-temperature-resistant thermoplastic composition and preparation method thereof - Google Patents

It is a kind of can laser activation high-temperature-resistant thermoplastic composition and preparation method thereof Download PDF

Info

Publication number
CN108239388A
CN108239388A CN201711290535.7A CN201711290535A CN108239388A CN 108239388 A CN108239388 A CN 108239388A CN 201711290535 A CN201711290535 A CN 201711290535A CN 108239388 A CN108239388 A CN 108239388A
Authority
CN
China
Prior art keywords
temperature
thermoplastic composition
laser activation
resistant thermoplastic
water cooling
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.)
Withdrawn
Application number
CN201711290535.7A
Other languages
Chinese (zh)
Inventor
邓文
刘可
杨虎
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.)
SHENZHEN SPHONSUN TECHNOLOGY Co Ltd
Original Assignee
SHENZHEN SPHONSUN TECHNOLOGY 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 SHENZHEN SPHONSUN TECHNOLOGY Co Ltd filed Critical SHENZHEN SPHONSUN TECHNOLOGY Co Ltd
Priority to CN201711290535.7A priority Critical patent/CN108239388A/en
Publication of CN108239388A publication Critical patent/CN108239388A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/02Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L77/00Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details
    • H05K1/0284Details of three-dimensional rigid printed circuit boards
    • 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
    • C08K3/32Phosphorus-containing compounds
    • C08K2003/321Phosphates
    • C08K2003/328Phosphates of heavy metals
    • 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
    • C08K2201/014Additives containing two or more different additives of the same subgroup in C08K
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses it is a kind of can laser activation high-temperature-resistant thermoplastic composition and preparation method thereof, the thermoplastic compounds are according to weight percent, including following components;LDP additives:8 15%, thermoplasticity fire resistant resin:73.5 89.3%, rubber solubilising polymer:1 5%, surface modifier:1 5%, graphene:0.3 0.9%, resistance to high temperature oxidation agent:0.3% 0.5%, remaining is toner or high dielectric material, the composition good product dispersibility, mechanical property and chemical plating are had excellent performance, have good plating performance and processing forming, it can be achieved that plastic material surface directly mounts component, make full use of structure space, meet high integration, miniaturization and light-weighted demand.

Description

It is a kind of can laser activation high-temperature-resistant thermoplastic composition and preparation method thereof
Technical field
The present invention relates to a kind of thermoplastic compounds, be related specifically to it is a kind of can laser activation high-temperature-resistant thermoplastic combination Object and preparation method thereof.
Background technology
At present, forming 3D circuits using the direct figure of laser (LDP) method becomes to become more and more popular.In LDP methods, swash Light beam is mobile so as to activate the frosting in the place of conductive path to be set on product surface.Directly schemed by means of laser Shape and the electroplating method that becomes more meticulous can obtain smaller conductive path width.In addition, the interval between conductive path can also be more It is small.The direct figure of laser (LDP) method save final use application in space and weight, another advantage be the flexible of it Property, if changing the design of circuit, it is thus only necessary to which the computer for controlling laser is reprogramed.
A kind of special active catalyst is used in directly graphical (LDP) method of laser.Laser is drawn on the surface of workpiece Go out circuitous pattern, light beam, which passes through part, can cause surface microroughness, while the path of laser is also in metal active catalysis The position of heart exposure.These active catalytic centers are exactly nuclei of crystallization when carrying out chemical plating in next step.It is workable other Chemical plating method includes but not limited to copper facing, gold, nickel, silver, zinc, tin, chromium, cadmium etc..
Directly graphical (LDP) method circuit plate part of existing laser use epoxy resin+glass fibre or PI, in one layer of gum copper foil of composite material surface hot pressing, then by pattern transfer, development, it is unwanted that surface is peelled off in etching Layers of copper obtains circuit, using subtractive process, can only do planar circuit, it is impossible to stereo circuit is done, secondly, and after the completion of PCB, warp It crosses surface installation technique and is installed to concrete structure, complex manufacturing technology.
Invention content
Present invention mainly solves directly graphical (LDP) methods of existing laser can only do planar circuit, complex manufacturing technology The technical issues of.
In order to solve the above technical problems, the present invention provides it is a kind of can laser activation high-temperature-resistant thermoplastic composition, It is characterized in that, the thermoplastic compounds are according to weight percent, including following components;LDP additives:8-15%;Thermoplastic Property fire resistant resin:73.5-89.3%;Rubber solubilising polymer:1-5%;Surface modifier:1-5%;Graphene:0.3- 0.9%;Resistance to high temperature oxidation agent:0.3%-0.5%;Remaining is toner or high dielectric material
Optionally, the thermoplasticity fire resistant resin is selected from PA, PBT, LCP, PEEK, PA base fibre reinforced materials, PBT bases One or more multicomponent alloy composite woods in fibre reinforced materials, LCP bases fibre reinforced materials, PEEK base fibre reinforced materials Material.
Optionally, the LDP additives are selected from spinel structure type metal mixing oxide, are Co-Ti-O and Co-AL-O [Co(AlO2)2, CAS:1345-16-0] mixed oxide, Co-Ti-O and Co-AL-O (AlO2)2, CAS:1345-16-0] salt Compound it is one or more.
Optionally, the rubber solubilising polymer is in organosilicon or organosilicon and General Purpose Rubber elastomer blends It is a kind of.
Optionally, the surface modifier be organic silicon modifying agent, one or both of organic titanium class modifying agent, institute Antioxidant is stated as four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester powder or particle.
Optionally, the graphene is 16-20% single-layer graphenes, multi-layer graphene and graphite mixture.
The present invention also provides it is a kind of can laser activation high-temperature-resistant thermoplastic composition preparation method, including walking as follows Suddenly;
S1:Drying, thermoplasticity fire resistant resin is dried at 100-160 DEG C;
S2:Take out grain, according to weight percent, by 8-15%LDP additives, 73.5-89.3% thermoplasticity fire resistant resin, 1-5% rubber solubilisings polymer, 1-5% surface modifiers, 0.3-0.9% graphenes, 0.3%-0.5% resistance to high temperature oxidation agent It is mixed at 240-300 DEG C and takes out grain, wherein the L/D values of Granulation Equipments are controlled more than 25;
S3:Pelletizing, the pelletizing speed are 40-200RPM;
Optionally, it is described pumping grain step after to it is described can laser activation high-temperature-resistant thermoplastic composition carry out water cooling, The water cooling behaviour is taken as 50-70 DEG C of water cooling.
Optionally, after using 50-70 DEG C of water cooling, second water cooling is carried out, the water temperature of the second water cooling is 30-45 DEG C, then third road water cooling is carried out with cold water again.
Advantageous effect:It is provided by the present invention can laser activation high-temperature-resistant thermoplastic composition can be used for molding prepare knot Component, as a result of high-temperature-resistant thermoplastic composition, structural member surface can Direct Laser process and preparation of metallizing is three-dimensional Conducting channel, and the thermoplasticity fire resistant resin material as matrix can be subjected to the temperature of SMT, it is possible to it realizes direct In stereo circuit over-assemble electronic device, and this can laser activation high-temperature-resistant thermoplastic composition good dispersion, mechanical property It is had excellent performance with chemical plating, has good plating performance and processing forming, save assembling procedure, due in structural member table Face directly makes electronic circuit, not only saves shell space, but also facilitates the installation of other electronic components of enclosure interior, can carry significantly The integrated level of high electronic product.
Specific embodiment
It should be understood that specific embodiment discussed below is merely to illustrate and explain the present invention, it is not to use In the limitation present invention.
The present invention provides it is a kind of can laser activation high-temperature-resistant thermoplastic composition, which is characterized in that thermoplastic composition Object is according to weight percent, including following components;LDP additives:8-15%;Thermoplasticity fire resistant resin:73.5-89.3%; Rubber solubilising polymer:1-5%;Surface modifier:1-5%;Graphene:0.3-0.9%;Resistance to high temperature oxidation agent:0.3%- 0.5%;Other:0.1%.
Wherein, thermoplasticity fire resistant resin be selected from PA (benzene dicarboxylic acid butanediol ester), PBT (polyamide), (liquid crystal gathers LCP Close object), PEEK (polyether-ether-ketone), PA bases fibre reinforced materials, PBT bases fibre reinforced materials, LCP bases fibre reinforced materials, One or more multicomponent alloy composite materials in PEEK base fibre reinforced materials;
Wherein, the directly graphical additive of laser is selected from the direct figure compound additive of laser and is selected from spinel structure type gold Belong to mixed oxide, LDP additives are Co-Ti-O and Co-AL-O [Co (AlO2)2, CAS:1345-16-0] mixed oxide, Co-Ti-O and Co-AL-O [Co (AlO2)2, CAS:1345-16-0] salt compounds it is one or more;In the LDP additives Do not contain the mixed oxide of class containing Cr common in the market, environmental protection and also will not due to Cr from high price be converted into low price when pair Material mechanical performance is caused to decline in the destruction of the chain structures such as plastic material-C=C- ,-C-C- ,-C-O-O-C, specifically, The weight percent of the LDP additives is 8-15%.
For above-mentioned resin modified is made to be heat-resisting material, need to add in surface modifier, in the preparation of thermoplastic compounds In the process, the mode being pre-mixed may be used in surface modifier, can also be added in by the way of being directly blended, and surface is modified The ratio preferred weight percent of agent addition is 1-5%, and surface modifier is organic silicon modifying agent, in organic titanium class modifying agent One or two.
Wherein, in the present invention, suitable antioxidant was four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] seasons penta Four alcohol ester powder or particle, antioxidant are generally used in an amount by 0.01 to 0.5 parts by weight, based on the total composition of 100 parts by weight, Above-mentioned antioxidant has good compatibility with most polymers.
Wherein graphene is the mixture of dilute 16-20% mono-layer graphites, multi-layer graphene and graphite, wherein Grapheme material sample is provided by CNANO companies.Some in the π of graphene-pi-conjugated key and plastic materialIn carboxyl, ketone, quinone, C The functional group of greater activities such as=C ,-[NHCO]-or big pi bond form conjugated bonds covalent bond so that the stretching of material is strong Degree, elasticity modulus, thermal conductivity, performance obtain more than 20% promotion.Due to the heat-resisting material of PA, PBT, LCP, PEEK base Polar bond and double bond in functional group are far more than consumption electronic product widely used PC, PC/ABS and its fibre-reinforced compound Material so the height of SLG contents becomes apparent from the performance influence of above four kinds of modified materials, becomes main affecting factors simultaneously There is conjugated covalent bonds synergistic effect.
It is provided by the present invention can laser activation high-temperature-resistant thermoplastic composition can be used for molding preparation structure part, due to Employ high-temperature-resistant thermoplastic composition, structural member surface can Direct Laser process and the three-dimensional conducting channel of preparation of metallizing, And the thermoplasticity fire resistant resin material as matrix can be subjected to the temperature of SMT, it is possible to realize directly in stereoscopic electric Road assembling electronic device, and this can laser activation high-temperature-resistant thermoplastic composition good dispersion, mechanical property and chemical plating It has excellent performance, has good plating performance and processing forming, save assembling procedure, since it may be implemented in structural member table Face directly makes electronic circuit, not only saves shell space, but also facilitates the installation of other electronic components of enclosure interior, can carry significantly The integrated level of high electronic product.
The present invention also provides it is a kind of can laser activation high-temperature-resistant thermoplastic composition preparation method, including walking as follows Suddenly;
S1:Drying, thermoplasticity fire resistant resin is dried at 100-160 DEG C;
S2:Take out grain, according to weight percent, by 8-15%LDP additives, 73.5-89.3% thermoplasticity fire resistant resin, 1-5% rubber solubilisings polymer, 1-5% surface modifiers, 0.3-0.9% graphenes, 0.3%-0.5% resistance to high temperature oxidation Agent, 0.1% toner or high dielectric material mix at 240-300 DEG C and take out grain, wherein Granulation Equipments L/D values control 25 with On;
S3:Pelletizing, the pelletizing speed are 40-200RPM;
Optionally, it is described pumping grain step after to it is described can laser activation high-temperature-resistant thermoplastic composition carry out water cooling, The water cooling behaviour is taken as 50-70 DEG C of water cooling.
Optionally, after using 50-70 DEG C of water cooling, second water cooling is carried out, the water temperature of the second water cooling is 30-45 DEG C, then third road water cooling is carried out with cold water again.
Embodiment 1
The thermoplastic compounds are according to weight percent, including following components:
The preparation method of the thermoplastic compounds of the embodiment, includes the following steps:
Add in the thermoplastic resin PC that weight percent is 80% in an extruder, 13% molybdenum oxide copper, 3% vinyl Triethoxysilane coupling agent and the blending of 4% acryl-modified silicone resin;It coats either dusting or is granulated finished product.
Embodiment 2
The thermoplastic compounds are according to weight percent, including following components:
Thermoplastic resin PBT79.4%
The preparation method of the thermoplastic compounds of the embodiment, includes the following steps:
Premix:By alkali formula cupric phosphate of the weight percent for 14.5%, 1% titanate coupling agent;4% is acrylic acid modified Organosilicon etc. is first mixed into the first component;Molding:By the first component and weight percent it is 79.4% thermoplastic resin before injection PBT be blended in 100 DEG C -115 DEG C and dries 4 hours;It coats either dusting or is granulated finished product.
Embodiments of the present invention are explained in detail above, but the present invention is not limited to described embodiments.It is right For those skilled in the art, in the case where not departing from the principle of the invention and spirit, these embodiments are carried out more Kind change, modification, replacement and modification, still fall in protection scope of the present invention.

Claims (9)

1. it is a kind of can laser activation high-temperature-resistant thermoplastic composition, which is characterized in that the thermoplastic compounds are according to weight Percentage, including following components;
LDP additives:8-15%;
Thermoplasticity fire resistant resin:73.5-89.3%;
Rubber solubilising polymer:1-5%;
Surface modifier:1-5%;
Graphene:0.3-0.9%
Resistance to high temperature oxidation agent:0.3%-0.5%
Remaining is toner or high dielectric material.
2. it is according to claim 1 can laser activation high-temperature-resistant thermoplastic composition, which is characterized in that the thermoplasticity Fire resistant resin is selected from PA, PBT, LCP, PEEK, PA base fibre reinforced materials, PBT bases fibre reinforced materials, LCP bases fiber and increases One or more multicomponent alloy composite materials in strong material, PEEK base fibre reinforced materials.
3. it is according to claim 1 can laser activation high-temperature-resistant thermoplastic composition, which is characterized in that the LDP adds Agent is added to be selected from spinel structure type metal mixing oxide, is Co-Ti-O and Co-AL-O [Co (AlO2)2, CAS:1345-16-0] Mixed oxide, Co-Ti-O and Co-AL-O [Co (AlO2)2, CAS:1345-16-0] salt compounds it is one or more.
4. it is according to claim 1 can laser activation high-temperature-resistant thermoplastic composition, which is characterized in that the rubber Solubilized polymer is organosilicon or organosilicon and one kind in General Purpose Rubber elastomer blends.
5. it is according to claim 1 can laser activation high-temperature-resistant thermoplastic composition, which is characterized in that the surface changes Property agent be organic silicon modifying agent, one or both of organic titanium class modifying agent, the antioxidant is four [β-(3,5- bis- uncles Butyl -4- hydroxy phenyls) propionic acid] pentaerythritol ester powder or particle.
6. it is according to claim 1 can laser activation high-temperature-resistant thermoplastic composition, which is characterized in that the graphene For 16-20% single-layer graphenes, multi-layer graphene and graphite mixture.
7. as described in claim 1-6 is any can laser activation high-temperature-resistant thermoplastic composition preparation method, including such as Lower step;
S1:Drying, thermoplasticity fire resistant resin is dried at 100-160 DEG C;
S2:Grain is taken out, according to weight percent, by 8-15%LDP additives, 73.5-89.3% thermoplasticity fire resistant resin, 1- 5% rubber solubilising polymer, 1-5% surface modifiers, 0.3-0.9% graphenes, 0.3%-0.5% resistance to high temperature oxidation agent exist 240-300 DEG C mixes and takes out grain, and the wherein L/D values of Granulation Equipments are controlled more than 25;
S3:Pelletizing, the pelletizing speed are 40-200RPM.
8. it is according to claim 7 can laser activation high-temperature-resistant thermoplastic composition preparation method, which is characterized in that After the pumping grain step to it is described can the high-temperature-resistant thermoplastic composition of laser activation carry out water cooling, water cooling operation is adopts With 50-70 DEG C of water cooling.
9. it is according to claim 8 can laser activation high-temperature-resistant thermoplastic composition preparation method, which is characterized in that After using 50-70 DEG C of water cooling, second water cooling is carried out, the water temperature of the second water cooling is 30-45 DEG C, then uses cold water again Carry out third road water cooling.
CN201711290535.7A 2017-12-08 2017-12-08 It is a kind of can laser activation high-temperature-resistant thermoplastic composition and preparation method thereof Withdrawn CN108239388A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711290535.7A CN108239388A (en) 2017-12-08 2017-12-08 It is a kind of can laser activation high-temperature-resistant thermoplastic composition and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711290535.7A CN108239388A (en) 2017-12-08 2017-12-08 It is a kind of can laser activation high-temperature-resistant thermoplastic composition and preparation method thereof

Publications (1)

Publication Number Publication Date
CN108239388A true CN108239388A (en) 2018-07-03

Family

ID=62700495

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711290535.7A Withdrawn CN108239388A (en) 2017-12-08 2017-12-08 It is a kind of can laser activation high-temperature-resistant thermoplastic composition and preparation method thereof

Country Status (1)

Country Link
CN (1) CN108239388A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110079076A (en) * 2019-04-23 2019-08-02 深圳市鑫方上科技有限公司 It is a kind of can laser activation high-temperature-resistant thermoplastic composition and preparation method thereof
CN114106678A (en) * 2021-12-13 2022-03-01 国网湖南省电力有限公司 Anti-icing coating on surface of fan blade and preparation method and application thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110079076A (en) * 2019-04-23 2019-08-02 深圳市鑫方上科技有限公司 It is a kind of can laser activation high-temperature-resistant thermoplastic composition and preparation method thereof
CN114106678A (en) * 2021-12-13 2022-03-01 国网湖南省电力有限公司 Anti-icing coating on surface of fan blade and preparation method and application thereof
CN114106678B (en) * 2021-12-13 2022-04-22 国网湖南省电力有限公司 Anti-icing coating on surface of fan blade and preparation method and application thereof

Similar Documents

Publication Publication Date Title
CN102079959B (en) High-heat-conductivity white adhesive composition, high-heat-conductivity white cover film made from same and preparation method thereof
KR100808146B1 (en) Compositions of thin conductive tape for EMI shielding, method thereof and products manufactured therefrom
CN109735060A (en) A kind of thermoplastic composite and preparation method thereof for laser direct structuring technique
CN103450675A (en) Resin composition having laser direct-structuring function and its preparation method and use
CN109206961A (en) A kind of graphene conductive heat-conductive coating and preparation method thereof
CN111087790B (en) Graphene-metal powder composite electric and heat conducting plastic and preparation method thereof
CN108239388A (en) It is a kind of can laser activation high-temperature-resistant thermoplastic composition and preparation method thereof
CN102911491A (en) Thermoplastic composition, preparation method and application thereof
CN102775755A (en) Polyaryl ether nitrile (PEN) and carbonyl iron powder (Fe(CO)5) composite magnetic material and preparation method thereof
CN104789949A (en) Compounding method of epoxy resin solution with autocatalysis chemical copper plating activity and chemical copper plating method
CN104974468B (en) Thermosetting laser-induced metallization thermal-conduction composite material with stable high dielectric constant
CN101699566A (en) Low-temperature solidification electric-conduction slurry
CN108305704A (en) A kind of graphene-based High-conductivity carbon slurry and preparation method thereof
CN102378482B (en) Circuit board substrate and manufacturing method thereof
CN100373504C (en) Nano silver wire added conductive composite material, and preparation method
JP2005011878A (en) Electromagnetic wave absorber
CN103214795B (en) Composition of high-insulation heat conduction copper-clad plate and preparation method thereof
CN108099324B (en) Mobile terminal backboard, preparation method thereof and mobile terminal
CN107384238A (en) One kind leads thermal radiation heat dissipation film
CN103756278A (en) Engineering plastic applicable to LDS (Laser Direct Structuring) forming process as well as preparation method and application thereof
KR20140025215A (en) Thermal conductive adhesive comprising thermal conductive composite powder, thermal dissipation tape of thin film type comprising thereof and method of preparation the same
CN113194622A (en) Circuit board and manufacturing method thereof
CN103554921B (en) A kind of preparation method with heat conduction and electro-magnetic screen function elastomeric material
WO2014163059A1 (en) Electrically conductive coating material, and adherend using same
CN110467811B (en) Bending-resistant laser direct forming material 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
WW01 Invention patent application withdrawn after publication

Application publication date: 20180703

WW01 Invention patent application withdrawn after publication