CN109054112A - Electronic automobile-used antiultraviolet protection cover material of one kind and preparation method thereof - Google Patents
Electronic automobile-used antiultraviolet protection cover material of one kind and preparation method thereof Download PDFInfo
- Publication number
- CN109054112A CN109054112A CN201810919205.8A CN201810919205A CN109054112A CN 109054112 A CN109054112 A CN 109054112A CN 201810919205 A CN201810919205 A CN 201810919205A CN 109054112 A CN109054112 A CN 109054112A
- Authority
- CN
- China
- Prior art keywords
- antiultraviolet
- cover material
- electronic automobile
- gains
- preparation
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L5/00—Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00
- C08L5/04—Alginic acid; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/322—Ammonium phosphate
- C08K2003/323—Ammonium polyphosphate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Cosmetics (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Medicines Containing Plant Substances (AREA)
Abstract
The invention discloses a kind of electronic automobile-used antiultraviolet protection cover material and preparation method thereof, the electronic automobile-used antiultraviolet of preparation protects cover material absorption of UV with higher, and almost 100%; meanwhile tensile resistance is good, it is environmentally protective; quality is good, and service life is longer.Peanut shell, hazelnut shell and nano-titanium dioxide act synergistically, and significantly improve the anti-ultraviolet property of target material, while reducing production cost, realize making full use of for resource；Negative pressure improves each component dispersibility, and then improves the interface compatibility of itself and polyester base, further enhances the tensile resistance of material；Filler is modified with polyethylene glycol, ammonium polyphosphate, the collaboration of metering system acid oxidase hydroxypropyl methyl dimethoxysilane, promotes its dispersion, improves interface binding power, the mechanical property of reinforcing material, while improving uv resistance energy.
Description
Technical field
The invention belongs to antiultraviolet field of material technology, especially a kind of electronic automobile-used antiultraviolet protection cover material and
Preparation method.
Background technique
Ultraviolet light accounts for about 5% in daylight, wherein the large percentage of UVA, UVB ratio is smaller, and the destruction of UVB is
1000 times of UVA.UVA is also known as long wave blackspot effect ultraviolet light, there is very strong penetration capacity, can penetrate most of transparent
Glass and plastics, and the long wave ultraviolet contained in daylight has more than 98% and can penetrate ozone layer and cloud layer and reaches earth table
Face.Excessive ultraviolet light not only damages the body to people, but also has to a variety of materials being exposed under sunlight and destroy
Property effect so that the color aging of surfaces such as various buildings, automobile, electric vehicle shortens the working life, therefore there is ultraviolet light
The protection cover material of absorption function increasingly receives the concern of people.
Summary of the invention
In view of the above-mentioned problems, the present invention is intended to provide a kind of have good anti-ultraviolet function, and tensile strength is higher
Electronic automobile-used antiultraviolet protection cover material and preparation method thereof.
The invention is realized by the following technical scheme:
A kind of electronic automobile-used antiultraviolet protection cover material, which is characterized in that be made of raw material from the following weight:
Peanut shell 3-6, hazelnut shell 4-8, nano-titanium dioxide 3-5, sodium alginate soln 50-100, polyethylene glycol 2-3, polyphosphoric acid
Ammonium 1-2, metering system acid oxidase hydroxypropyl methyl dimethoxysilane 5-10.
Further, preparation method includes the following steps:
(1) peanut shell, hazelnut shell are washed by water with clear water clean, then the dry 10-20h at 80-90 DEG C, is ground after cooling
Mill, gains cross 100-150 mesh, obtain mixed-powder, spare；
(2) nano-titanium dioxide is added in sodium alginate soln, using ultrasonic disperse 30-40min, step is then added
(1) gains place 3-4h under negative pressure, so that all materials is sufficiently infiltrated fusion, then filter off after continuing ultrasound 20-30min
Gains are put into -30~-35 DEG C of freeze drying box and are freeze-dried by redundant solution；
(3) after being sufficiently mixed step (1) and step (2) gains, polyethylene glycol and ammonium polyphosphate uniformly, with methacrylic acid
Oxidation hydroxypropyl methyl dimethoxysilane is added in ball mill together, and in the ball milling speed of 1-2m/s, wet type is ground at 50-55 DEG C
Mill dispersion and modified 30-50min, are then filtered, dry, and being milled to partial size again is 50-200nm；
(4) it is put into double-screw extruding pelletizing machine, is heated to after step (3) gains and polyester slice being sufficiently mixed stirring
It 265-268 DEG C, squeezes out, slice, stretch, sizing.
Further, step (2) the sodium alginate soln mass concentration is 3-5%, wherein the acetic acid containing 5-7%.
Further, step (2) negative pressure is -25~-30MPa.
Further, step (2) ultrasound condition is 70-75Hz.
Further, step (3) drying condition is 100-105 DEG C.
Beneficial effects of the present invention: electronic automobile-used antiultraviolet protection cover material prepared by the present invention is with higher ultraviolet
Line absorption rate, almost 100%, meanwhile, tensile resistance is good, and environmentally protective, quality is good, and service life is longer.Peanut
Shell, hazelnut shell and nano-titanium dioxide act synergistically, and significantly improve the anti-ultraviolet property of target material, drop simultaneously
Low production cost, realizes making full use of for resource；Negative pressure improves each component dispersibility, and then makes itself and polyester base
The interface compatibility at bottom improves, and further enhances the tensile resistance of material；With polyethylene glycol, ammonium polyphosphate, methacrylic acid
Oxidation hydroxypropyl methyl dimethoxysilane collaboration is modified filler, promotes its dispersion, improves interface binding power, reinforcing material
Mechanical property, while improving uv resistance energy.
Specific embodiment
Illustrate the present invention with specific embodiment below, but is not limitation of the present invention.
Embodiment 1
A kind of electronic automobile-used antiultraviolet protection cover material, which is characterized in that be made of raw material from the following weight:
Peanut shell 3, hazelnut shell 4, nano-titanium dioxide 3, sodium alginate soln 50, polyethylene glycol 2, ammonium polyphosphate 1, metering system
Acid oxidase hydroxypropyl methyl dimethoxysilane 5.
Further, preparation method includes the following steps:
(1) peanut shell, hazelnut shell are washed by water with clear water clean, then the dry 10h at 80 DEG C, is ground, gained after cooling
Object sieves with 100 mesh sieve, and obtains mixed-powder, spare；
(2) nano-titanium dioxide is added in sodium alginate soln, using ultrasonic disperse 30min, step (1) institute is then added
Object is obtained, after continuing ultrasound 20min, 3h is placed under negative pressure, so that all materials is sufficiently infiltrated fusion, then filter off redundant solution,
Gains are put into -30 DEG C of freeze drying box and are freeze-dried；
(3) after being sufficiently mixed step (1) and step (2) gains, polyethylene glycol and ammonium polyphosphate uniformly, with methacrylic acid
Oxidation hydroxypropyl methyl dimethoxysilane is added in ball mill together, in the ball milling speed of 1m/s, wet lapping point at 50 DEG C
It dissipates with modified 30min, then filters, drying, and being milled to partial size again is 50nm；
(4) it is put into double-screw extruding pelletizing machine, is heated to after step (3) gains and polyester slice being sufficiently mixed stirring
It 265 DEG C, squeezes out, slice, stretch, sizing.
Further, step (2) the sodium alginate soln mass concentration is 3%, wherein containing 5% acetic acid.
Further, step (2) negative pressure is -25MPa.
Further, step (2) ultrasound condition is 70Hz.
Further, step (3) drying condition is 100 DEG C.
Embodiment 2
A kind of electronic automobile-used antiultraviolet protection cover material, which is characterized in that be made of raw material from the following weight:
Peanut shell 4, hazelnut shell 6, nano-titanium dioxide 4, sodium alginate soln 70, polyethylene glycol 3, ammonium polyphosphate 2, metering system
Acid oxidase hydroxypropyl methyl dimethoxysilane 8.
Further, preparation method includes the following steps:
(1) peanut shell, hazelnut shell are washed by water with clear water clean, then the dry 15h at 85 DEG C, is ground, gained after cooling
Object crosses 120 meshes, obtains mixed-powder, spare；
(2) nano-titanium dioxide is added in sodium alginate soln, using ultrasonic disperse 35min, step (1) institute is then added
Object is obtained, after continuing ultrasound 25min, 4h is placed under negative pressure, so that all materials is sufficiently infiltrated fusion, then filter off redundant solution,
Gains are put into -32 DEG C of freeze drying box and are freeze-dried；
(3) after being sufficiently mixed step (1) and step (2) gains, polyethylene glycol and ammonium polyphosphate uniformly, with methacrylic acid
Oxidation hydroxypropyl methyl dimethoxysilane is added in ball mill together, in the ball milling speed of 2m/s, wet lapping point at 52 DEG C
It dissipates with modified 40min, then filters, drying, and being milled to partial size again is 100nm；
(4) it is put into double-screw extruding pelletizing machine, is heated to after step (3) gains and polyester slice being sufficiently mixed stirring
It 267 DEG C, squeezes out, slice, stretch, sizing.
Further, step (2) the sodium alginate soln mass concentration is 4%, wherein containing 6% acetic acid.
Further, step (2) negative pressure is -28MPa.
Further, step (2) ultrasound condition is 73Hz.
Further, step (3) drying condition is 102 DEG C.
Embodiment 3
A kind of electronic automobile-used antiultraviolet protection cover material, which is characterized in that be made of raw material from the following weight:
Peanut shell 6, hazelnut shell 8, nano-titanium dioxide 5, sodium alginate soln 100, polyethylene glycol 3, ammonium polyphosphate 2, methyl-prop
Olefin(e) acid aoxidizes hydroxypropyl methyl dimethoxysilane 10.
Further, preparation method includes the following steps:
(1) peanut shell, hazelnut shell are washed by water with clear water clean, then the dry 20h at 90 DEG C, is ground, gained after cooling
- 150 mesh of object mistake, obtains mixed-powder, spare；
(2) nano-titanium dioxide is added in sodium alginate soln, using ultrasonic disperse 40min, step (1) institute is then added
Object is obtained, after continuing ultrasound 30min, 4h is placed under negative pressure, so that all materials is sufficiently infiltrated fusion, then filter off redundant solution,
Gains are put into -35 DEG C of freeze drying box and are freeze-dried；
(3) after being sufficiently mixed step (1) and step (2) gains, polyethylene glycol and ammonium polyphosphate uniformly, with methacrylic acid
Oxidation hydroxypropyl methyl dimethoxysilane is added in ball mill together, in the ball milling speed of 2m/s, wet lapping point at 55 DEG C
It dissipates with modified 50min, then filters, drying, and being milled to partial size again is 200nm；
(4) it is put into double-screw extruding pelletizing machine, is heated to after step (3) gains and polyester slice being sufficiently mixed stirring
It 268 DEG C, squeezes out, slice, stretch, sizing.
Further, step (2) the sodium alginate soln mass concentration is 5%, wherein containing 7% acetic acid.
Further, step (2) negative pressure is -30MPa.
Further, step (2) ultrasound condition is 75Hz.
Further, step (3) drying condition is 105 DEG C.
Comparative example 1
The addition of peanut shell, hazelnut shell is omitted compared to embodiment 2 in this comparative example, and method and step in addition to this is equal
It is identical.
Comparative example 2
This comparative example replaces with normal pressure compared to embodiment 2, by the negative pressure of step (2), and method and step in addition to this is equal
It is identical.
Comparative example 3
The addition of metering system acid oxidase hydroxypropyl methyl dimethoxysilane is omitted compared to embodiment 2 in this comparative example,
In addition to this method and step is all the same.
Performance test:
Absorption of UV test: being tested using Japanese Shimadzu UV-3600 type spectrophotometer, and reference standard GB/T/
T2680 tests the ultraviolet isolating rate of each embodiment and comparative example.
Tensile strength test: it is surveyed according to tensile strength of the GB/T 1040-2006 to each embodiment and comparative example
Examination.
Test result is as shown in table 1:
Table 1
| Absorption of UV %(200-420nm) | Tensile strength MPa | |
| Embodiment 1 | 99.95 | 146 |
| Embodiment 2 | 99.98 | 148 |
| Embodiment 3 | 99.92 | 147 |
| Comparative example 1 | 76.34 | 136 |
| Comparative example 2 | 82.93 | 104 |
| Comparative example 3 | 84.78 | 95 |
As can be seen from Table 1, electronic automobile-used antiultraviolet prepared by the present invention protects cover material ultraviolet radiation absorption with higher
Rate, almost 100%, meanwhile, tensile resistance is good, and environmentally protective, quality is good, and service life is longer.
Claims (6)
1. a kind of electronic automobile-used antiultraviolet protects cover material, which is characterized in that be made of raw material from the following weight:
Peanut shell 3-6, hazelnut shell 4-8, nano-titanium dioxide 3-5, sodium alginate soln 50-100, polyethylene glycol 2-3, polyphosphoric acid
Ammonium 1-2, metering system acid oxidase hydroxypropyl methyl dimethoxysilane 5-10.
2. the electronic automobile-used antiultraviolet of one kind according to claim 1 protects cover material, which is characterized in that preparation method
The following steps are included:
(1) peanut shell, hazelnut shell are washed by water with clear water clean, then the dry 10-20h at 80-90 DEG C, is ground after cooling
Mill, gains cross 100-150 mesh, obtain mixed-powder, spare；
(2) nano-titanium dioxide is added in sodium alginate soln, using ultrasonic disperse 30-40min, step is then added
(1) gains place 3-4h under negative pressure, so that all materials is sufficiently infiltrated fusion, then filter off after continuing ultrasound 20-30min
Gains are put into -30~-35 DEG C of freeze drying box and are freeze-dried by redundant solution；
(3) after being sufficiently mixed step (1) and step (2) gains, polyethylene glycol and ammonium polyphosphate uniformly, with methacrylic acid
Oxidation hydroxypropyl methyl dimethoxysilane is added in ball mill together, and in the ball milling speed of 1-2m/s, wet type is ground at 50-55 DEG C
Mill dispersion and modified 30-50min, are then filtered, dry, and being milled to partial size again is 50-200nm；
(4) it is put into double-screw extruding pelletizing machine, is heated to after step (3) gains and polyester slice being sufficiently mixed stirring
It 265-268 DEG C, squeezes out, slice, stretch, sizing.
3. the electronic automobile-used antiultraviolet of one kind according to claim 2 protects cover material, which is characterized in that step (2) institute
Stating sodium alginate soln mass concentration is 3-5%, wherein the acetic acid containing 5-7%.
4. the electronic automobile-used antiultraviolet of one kind according to claim 2 protects cover material, which is characterized in that step (2) institute
Stating negative pressure is -25~-30MPa.
5. the electronic automobile-used antiultraviolet of one kind according to claim 2 protects cover material, which is characterized in that step (2) institute
Stating ultrasound condition is 70-75Hz.
6. the electronic automobile-used antiultraviolet of one kind according to claim 2 protects cover material, which is characterized in that step (3) institute
Stating drying condition is 100-105 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810919205.8A CN109054112A (en) | 2018-08-14 | 2018-08-14 | Electronic automobile-used antiultraviolet protection cover material of one kind and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810919205.8A CN109054112A (en) | 2018-08-14 | 2018-08-14 | Electronic automobile-used antiultraviolet protection cover material of one kind and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109054112A true CN109054112A (en) | 2018-12-21 |
Family
ID=64678237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810919205.8A Pending CN109054112A (en) | 2018-08-14 | 2018-08-14 | Electronic automobile-used antiultraviolet protection cover material of one kind and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109054112A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102552093A (en) * | 2011-05-25 | 2012-07-11 | 河南大学 | Sunscreen skin care product and preparation method thereof |
| CN102796332A (en) * | 2012-08-28 | 2012-11-28 | 云南鑫乾矿业有限公司 | Polyvinyl chloride/modified nut shell powder composite material and preparation method thereof |
| CN105219015A (en) * | 2015-11-18 | 2016-01-06 | 上海瀚氏模具成型有限公司 | A kind of anti-aging ABS plastic and preparation method thereof |
| CN107033567A (en) * | 2017-05-16 | 2017-08-11 | 广州找塑料新材料科技有限公司 | Peanut shell powder filled polypropylene lactic acid composite material and preparation method thereof |
-
2018
- 2018-08-14 CN CN201810919205.8A patent/CN109054112A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102552093A (en) * | 2011-05-25 | 2012-07-11 | 河南大学 | Sunscreen skin care product and preparation method thereof |
| CN102796332A (en) * | 2012-08-28 | 2012-11-28 | 云南鑫乾矿业有限公司 | Polyvinyl chloride/modified nut shell powder composite material and preparation method thereof |
| CN105219015A (en) * | 2015-11-18 | 2016-01-06 | 上海瀚氏模具成型有限公司 | A kind of anti-aging ABS plastic and preparation method thereof |
| CN107033567A (en) * | 2017-05-16 | 2017-08-11 | 广州找塑料新材料科技有限公司 | Peanut shell powder filled polypropylene lactic acid composite material and preparation method thereof |
Non-Patent Citations (5)
| Title |
|---|
| DEMIRBAS, A: "Kinetics for non-isothermal flash pyrolysis of hazelnut shell", 《BIORESOURCE TECHNOLOGY》 * |
| 任福民等: "《铁路环境监测与管理规划》", 30 June 2015 * |
| 张帆等: "《材料性能学》", 30 March 2014, 上海交通大学出版社 * |
| 王孟钟等: "《胶粘剂应用手册》", 30 November 1987, 化学工业出版社 * |
| 石峰等: "4 种植物壳纤维成分及理化性能对比研究", 《南京农业大学学报》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110038529A (en) | A kind of preparation method of three-dimensional fiber base composite aerogel type adsorbent | |
| CN103447013A (en) | Method for preparing graphene/chitosan adsorbent and application method thereof | |
| CN102851942A (en) | Anti-ultraviolet pure cotton fabric finishing method | |
| CN109894095A (en) | A kind of sodium alginate-chitosan composite gel microsphere absorption arsenic removal material and preparation method thereof containing iron and manganese oxides | |
| CN109054112A (en) | Electronic automobile-used antiultraviolet protection cover material of one kind and preparation method thereof | |
| CN101235154A (en) | Polyvinyl chloride membrane for ginseng | |
| CN106223097B (en) | A kind of method of high paper pulp yield deinking | |
| CN105111654A (en) | Preparation method of biomass film agent for shielding and reducing pollution | |
| CN1265961C (en) | Glazing laminates for window | |
| CN106976874A (en) | A kind of preparation method of activated carbon | |
| CN104307490A (en) | Preparation method of alginate-persimmon tannin composite material | |
| CN104017431B (en) | For the nano Ce O of uvioresistant2The preparation method of water color ink | |
| CN209985549U (en) | Manufacturing device of wood fiber powder | |
| CN107827294A (en) | A kind of water pollution control utilizes equipment with water resource | |
| CN105418140A (en) | Ferronickel slag self-cleaning water permeable brick and manufacturing method thereof | |
| CN108690443A (en) | A kind of road cooling coating material and preparation method thereof | |
| CN105418136A (en) | Self-cleaning water permeable brick capable of adsorbing automobile exhaust and manufacturing method thereof | |
| CN109368638A (en) | A method of utilizing discarded Tea Production active carbon | |
| CN106111075B (en) | A kind of preparation method of chitosan-modified down-powder anionic dye adsorbent | |
| CN104005274A (en) | Water and moisture resistant good-bursting-strength air filter paper for automobiles, and making method thereof | |
| CN108404879A (en) | A kind of preparation method of high-performance Dye Adsorption material | |
| CN103840036A (en) | Preparation technology of PID resistance photovoltaic module | |
| CN105418152A (en) | Weather-proof self-cleaning water permeable brick and manufacturing method thereof | |
| CN106734162A (en) | A kind of inexpensive soil-repairing agent doped with activated sludge and preparation method thereof | |
| CN103469559A (en) | UV-resistant composite finishing agent 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 |
Application publication date: 20181221 |
|
| RJ01 | Rejection of invention patent application after publication |