CN112552647A - Preparation method of coffee grounds and epoxy resin composite material - Google Patents
Preparation method of coffee grounds and epoxy resin composite material Download PDFInfo
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- CN112552647A CN112552647A CN202011438179.0A CN202011438179A CN112552647A CN 112552647 A CN112552647 A CN 112552647A CN 202011438179 A CN202011438179 A CN 202011438179A CN 112552647 A CN112552647 A CN 112552647A
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- coffee grounds
- epoxy resin
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- resin composite
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- 239000003822 epoxy resin Substances 0.000 title claims abstract description 58
- 229920000647 polyepoxide Polymers 0.000 title claims abstract description 58
- 239000002131 composite material Substances 0.000 title claims abstract description 52
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 21
- 238000001035 drying Methods 0.000 claims abstract description 11
- 238000000227 grinding Methods 0.000 claims abstract description 11
- 239000003607 modifier Substances 0.000 claims abstract description 10
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 238000012216 screening Methods 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000001291 vacuum drying Methods 0.000 claims description 8
- 238000005303 weighing Methods 0.000 claims description 6
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- 210000004884 grey matter Anatomy 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 238000012986 modification Methods 0.000 claims description 4
- 230000004048 modification Effects 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 3
- MBHRHUJRKGNOKX-UHFFFAOYSA-N [(4,6-diamino-1,3,5-triazin-2-yl)amino]methanol Chemical compound NC1=NC(N)=NC(NCO)=N1 MBHRHUJRKGNOKX-UHFFFAOYSA-N 0.000 claims description 2
- 239000012948 isocyanate Substances 0.000 claims description 2
- 150000002513 isocyanates Chemical class 0.000 claims description 2
- 238000010907 mechanical stirring Methods 0.000 claims description 2
- -1 methyl eleostearate anhydride Chemical class 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 230000010355 oscillation Effects 0.000 claims description 2
- 238000004064 recycling Methods 0.000 abstract description 3
- 238000000465 moulding Methods 0.000 abstract 1
- 238000004381 surface treatment Methods 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 8
- 239000011449 brick Substances 0.000 description 6
- 239000011159 matrix material Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 125000003700 epoxy group Chemical group 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241000533293 Sesbania emerus Species 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 125000002723 alicyclic group Chemical group 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 239000002551 biofuel Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
- 239000002781 deodorant agent Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
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- 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 invention discloses a preparation method of a coffee grounds epoxy resin composite material, which comprises the following raw materials in percentage by mass: 0.1-70% of coffee grounds, 0.1-5% of surface modifier and 30-99% of epoxy resin. The preparation method of the coffee grounds-epoxy resin composite material comprises the following steps: washing, removing impurities and drying the coffee grounds, carrying out surface treatment on the coffee grounds by adopting a surface modifier, grinding and screening, uniformly mixing the modified coffee grounds and the epoxy resin, removing bubbles, and curing and molding at normal temperature. The coffee grounds epoxy resin composite material is cured and molded at normal temperature, can effectively avoid the coffee grounds from being degraded and carbonized due to high temperature, promotes the recycling of the coffee grounds, reduces the product cost, fully utilizes natural resources and protects the environment.
Description
Technical Field
The invention belongs to the field of epoxy resin composite materials, and particularly relates to a preparation method of a coffee grounds epoxy resin composite material.
Background
The thermosetting epoxy resin is a high molecular prepolymer which contains two or more epoxy groups in a molecule and takes an aliphatic, alicyclic or aromatic chain segment as a main chain. The epoxy group of the epoxy resin can react with various curing agents to form an infusible three-dimensional net structure, so that the epoxy resin has the advantages of good mechanical property, low curing shrinkage, stable chemical property and the like. Epoxy resins are generally used as a matrix and made into composite materials with carbon materials, particulate matter, wood flour, fibrous materials, etc. as reinforcement. Epoxy resin or its composite material has been widely used in the fields of aerospace, automobiles, sporting goods, adhesives and the like.
Coffee-based products are second only in trade in the world to petroleum and its derivatives, but coffee beans are a natural renewable resource. The consumption of coffee has become the top of the world's three major beverages, producing 0.9 kg of coffee grounds per 1 kg of coffee produced. The yield of the waste coffee grounds is huge, and the direct discarding can cause environmental pollution and resource waste. The recycling of coffee grounds has become a research hotspot at present. Through the research of researchers in recent years, the recycling of coffee grounds has been used in many applications, such as making adsorption deodorants, composite biofuels, plant fertilizers, carbon functional fibers, composite plastics, and the like. The coffee grounds and the products thereof have the advantages of coffee fragrance, antibiosis, ultraviolet resistance, low cost and the like, and are primarily accepted by the society. However, the application of the coffee grounds in the polymer composite material at present mainly takes the thermoplastic polymer as a matrix, and the coffee grounds are easy to degrade and carbonize due to high temperature in the processing process of the thermoplastic composite material, so that the coffee grounds/thermosetting resin-based composite material solidified at normal temperature is lacked.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention aims to provide a preparation method of a coffee grounds-epoxy resin composite material. The modified coffee grounds and the epoxy resin are mechanically stirred and mixed, and are solidified into the composite material at normal temperature, so that the invention has the advantages of simple process flow, low-temperature processing, low cost, excellent performance and the like.
The invention is realized by the following technical scheme:
(1) the preparation method of the coffee grounds-epoxy resin composite material is characterized in that the coffee grounds-epoxy resin composite material comprises the following raw materials in percentage by mass: 0.1-70% of coffee grounds, 0.1-5% of surface modifier and 30-99% of epoxy resin.
(2) The grain diameter of the coffee grounds is 100-200 meshes.
(3) Preferably, the surface modifier is one or more of silane coupling agent (KH-560), methylol melamine, methyl eleostearate anhydride and isocyanate.
(4) The epoxy resin is curable at normal temperature.
(5) The preparation method of the coffee grounds-epoxy resin composite material comprises the following steps:
A. pretreating coffee grounds, namely cleaning the coffee grounds by using a 70% ethanol solution to remove gray matters and impurities in the coffee grounds, and placing the fully cleaned coffee grounds in an oven for drying;
B. b, mixing the coffee grounds treated in the step A and a surface modifier according to a certain mass percentage, and putting the mixture into a ball mill for mixing, grinding and screening;
C. b, weighing and mixing the coffee grounds subjected to surface modification in the step B and the epoxy resin according to a certain mass percentage, adding the coffee grounds and the epoxy resin into a stirring container, and mechanically stirring and uniformly mixing;
D. c, placing the composite material uniformly stirred in the step C in an ultrasonic container, uniformly mixing the composite material in a vibration mode, and removing bubbles;
E. d, placing the composite material treated in the step D in a vacuum drying oven, and further removing bubbles;
F. and E, placing the coffee grounds and epoxy resin composite material processed in the step E into a mold, and curing at normal temperature.
In the step A, the drying temperature of the coffee grounds is 60-90 ℃, and the drying time is 2-6 hours.
In the step B, the grinding time is 1-5 hours, and the grinding temperature is 20-30 ℃.
In the step C, the mechanical stirring speed is 100-200 r/min, the stirring time is 1-3 hours, and the stirring temperature is 20-30 ℃.
In the step D, the ultrasonic frequency is 20-40kHz, the temperature is 20-30 ℃, and the oscillation time is 0.5-3 hours.
In the step E, the vacuum degree of the vacuum drying oven is 0.01-0.09MPa, the temperature is 20-30 ℃, and the standing time is 1-12 hours.
And in the step F, curing the coffee grounds epoxy resin composite material at normal temperature for 12-48 hours.
The invention has the beneficial effects that: (1) the invention takes the modified coffee grounds as the reinforcement and the epoxy resin as the matrix to be solidified into the composite material at room temperature, effectively avoids the coffee grounds from being degraded and carbonized due to high temperature, simultaneously recycles the waste coffee grounds reasonably and efficiently, can reduce the cost, fully utilizes natural resources and is beneficial to protecting the environment. (2) After the surface of the coffee grounds is modified, the hydrophobicity is increased, and the bonding strength between the coffee grounds and the epoxy resin is enhanced. (3) The coffee grounds belong to degradable materials, and the degradability of the epoxy resin matrix composite material is improved.
Drawings
FIG. 1 is a diagram showing the appearance and appearance of a pattern plate brick made of an opaque coffee grounds epoxy resin composite material.
FIG. 2 is a diagram of the appearance and appearance of a pattern plate brick made of a semitransparent coffee grounds and epoxy resin composite material.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but it should not be construed that the scope of the present invention is limited to the examples.
Example 1
The preparation method of the coffee grounds-epoxy resin composite material is characterized by comprising the following raw materials in percentage by mass: 30% of coffee grounds, 1.5% of surface modifier and 68.5% of epoxy resin. The preparation method of the coffee grounds-epoxy resin composite material comprises the following steps:
A. pretreating coffee grounds, namely firstly cleaning the coffee grounds (3000g) by using 70% ethanol solution (5000ml) to remove gray matters and impurities in the coffee grounds, and putting the fully cleaned coffee grounds into an oven for drying at the drying temperature of 80 ℃ for 5 hours;
B. mixing the coffee grounds treated in the step A and a silane coupling agent (KH-560) according to the mass percentage of 30: 1.5, weighing, mixing and grinding in a ball mill for 5 hours at 25 ℃, and screening after grinding, wherein the particle size of the obtained coffee grounds is 100-200 meshes;
C. and B, weighing and mixing the coffee grounds (2205g) subjected to surface modification in the step B and the epoxy resin (4795g), adding the materials into a stirrer, and mechanically stirring and uniformly mixing the materials, wherein the stirring speed is 100 revolutions per minute, the stirring time is 2 hours, and the temperature is 25 ℃.
D. And C, placing the composite material uniformly mixed and stirred in the step C in an ultrasonic container, uniformly mixing and removing bubbles, wherein the ultrasonic frequency is 40kHz, the temperature is 25 ℃, and the vibration time is 1 hour.
E. And D, placing the material treated in the step D in a vacuum drying oven for further removing bubbles, wherein the vacuum degree of the vacuum drying oven is 0.08MPa, the temperature is 25 ℃, and the standing time is 3 hours.
F. And E, placing the coffee grounds and epoxy resin composite material processed in the step E into a mold to be cured at room temperature, wherein the curing time is 24 hours.
The opaque coffee grounds epoxy resin composite material pattern plate brick prepared by the step F is clear in pattern, high in strength and durable, and the appearance of the opaque pattern plate brick is shown in figure 1.
Example 2
The preparation method of the coffee grounds-epoxy resin composite material is characterized by comprising the following raw materials in percentage by mass: 1% of coffee grounds, 0.1% of surface modifier and 98.9% of epoxy resin. The preparation method of the coffee grounds-epoxy resin composite material comprises the following steps:
A. pretreating coffee grounds, namely firstly cleaning the coffee grounds (500g) by using 70% ethanol solution (1000ml) to remove gray matters and impurities in the coffee grounds, and placing the fully cleaned coffee grounds in an oven for drying at the drying temperature of 70 ℃ for 4 hours;
B. b, mixing the coffee grounds treated in the step A and a silane coupling agent (KH-560) according to the mass percentage of 1: weighing 0.1, mixing and grinding in a ball mill at 25 ℃ for 5 hours, and screening after grinding to obtain coffee grounds with the particle size of 100-200 meshes;
C. and D, weighing and mixing the coffee grounds (66g) subjected to surface modification in the step B and the epoxy resin (5934g), adding the materials into a stirrer, and mechanically stirring and uniformly mixing the materials, wherein the stirring speed is 150 revolutions per minute, the stirring time is 2 hours, and the temperature is 25 ℃.
D. And C, placing the composite material uniformly stirred in the step C in an ultrasonic container, uniformly mixing the composite material by vibration, and removing bubbles, wherein the ultrasonic frequency is 40kHz, the temperature is 25 ℃, and the vibration time is 0.5 hour.
E. And D, placing the material treated in the step D in a vacuum drying oven for further removing bubbles, wherein the vacuum degree of the vacuum drying oven is 0.08MPa, the temperature is 25 ℃, and the standing time is 2 hours.
F. And E, placing the coffee grounds and epoxy resin composite material processed in the step E into a mold to be cured at room temperature, wherein the curing time is 24 hours.
The semitransparent coffee grounds and epoxy resin composite material pattern plate brick prepared in the step F is clear in pattern, high in strength, durable and capable of having certain light transmittance, and the appearance pattern of the semitransparent pattern plate brick is shown in fig. 2.
Therefore, the coffee grounds epoxy resin composite material is obtained by curing at normal temperature, and has the advantages of low cost, low energy consumption, flame retardance and degradability.
Finally, it should be noted that: the above embodiments are only intended to illustrate the technical solution of the present invention and not to limit it, and it should be understood by those skilled in the art that the technical solution of the present invention can be modified or substituted by equivalent, and still fall within the scope covered by the present invention.
Claims (7)
1. The preparation method of the coffee grounds-epoxy resin composite material is characterized in that the coffee grounds-epoxy resin composite material comprises the following raw materials in percentage by mass: 0.1-70% of coffee grounds, 0.1-5% of surface modifier and 30-99% of epoxy resin.
2. The preparation method of the coffee grounds-epoxy resin composite material is characterized by comprising the following steps of:
A. pretreating coffee grounds, namely cleaning the coffee grounds by using an ethanol solution to remove gray matter and impurities in the coffee grounds, and placing the fully cleaned coffee grounds in an oven for drying;
B. b, mixing the coffee grounds treated in the step A and a surface modifier according to a certain mass percentage, and putting the mixture into a ball mill for mixing, grinding and screening;
C. b, weighing and mixing the coffee grounds subjected to surface modification in the step B and the epoxy resin according to a certain mass percentage, adding the coffee grounds and the epoxy resin into a stirring container, and mechanically stirring and uniformly mixing;
D. c, placing the composite material uniformly stirred in the step C in an ultrasonic container, uniformly mixing the composite material in a vibration mode, and removing bubbles;
E. d, placing the composite material treated in the step D in a vacuum drying oven, and further removing bubbles;
F. and E, placing the coffee grounds and epoxy resin composite material processed in the step E into a mold, and curing at normal temperature.
3. The method for preparing the coffee grounds-epoxy resin composite material as claimed in claim 1 or 2, wherein the particle size of the coffee grounds is 100-200 meshes.
4. The preparation method of the coffee grounds-epoxy resin composite material as claimed in claim 1 or 2, wherein the surface modifier is one or more of silane coupling agent (KH-560), methylol melamine, methyl eleostearate anhydride and isocyanate.
5. The preparation method of the coffee grounds-epoxy resin composite material as claimed in claim 1 or 2, wherein the epoxy resin is a normal temperature curable epoxy resin.
6. The preparation method of the coffee grounds-epoxy resin composite material as claimed in claim 2, wherein in the step A, the drying temperature of the coffee grounds is 60-90 ℃, and the drying time is 2-6 hours; in the step B, the grinding time is 1-5 hours, and the grinding temperature is 20-30 ℃; in the step C, the mechanical stirring speed is 100-200 r/min, the stirring time is 1-3 hours, and the stirring temperature is 20-30 ℃; in the step D, the ultrasonic frequency is 20-40kHz, the temperature is 20-30 ℃, and the oscillation time is 0.5-3 hours; in the step E, the vacuum degree of the vacuum drying oven is 0.01-0.09MPa, the temperature is 20-30 ℃, and the standing time is 1-12 hours; and in the step F, curing the coffee grounds epoxy resin composite material at normal temperature for 12-48 hours.
7. The coffee grounds epoxy resin composite material product prepared by the method of any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011438179.0A CN112552647A (en) | 2020-12-10 | 2020-12-10 | Preparation method of coffee grounds and epoxy resin composite material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011438179.0A CN112552647A (en) | 2020-12-10 | 2020-12-10 | Preparation method of coffee grounds and epoxy resin composite material |
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| CN112552647A true CN112552647A (en) | 2021-03-26 |
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| CN202011438179.0A Pending CN112552647A (en) | 2020-12-10 | 2020-12-10 | Preparation method of coffee grounds and epoxy resin composite material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113861926A (en) * | 2021-11-23 | 2021-12-31 | 上海灵啊实业有限公司 | Bi-component polyurethane adhesive and coffee grounds composition and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1352628A (en) * | 1970-11-04 | 1974-05-08 | Ciba Geigy Ag | Process for the manufacture of thermosetting plastic moulded articles having a glossy stain resistant surface |
| CN101798466A (en) * | 2010-03-16 | 2010-08-11 | 龙海市奈特化工有限责任公司 | Natural fiber composite material and preparation method thereof |
| CN104744920A (en) * | 2013-12-25 | 2015-07-01 | 三晃股份有限公司 | Polymer composite and product and preparation method thereof |
| CN106147166A (en) * | 2016-06-28 | 2016-11-23 | 浙江谷林生物材料有限公司 | A kind of polylactic acid coffee grounds composite modification material |
| CN110172258A (en) * | 2019-05-30 | 2019-08-27 | 上海互见创意设计有限公司 | A kind of composite polyolefine material and preparation method thereof containing coffee grounds |
| CN110229486A (en) * | 2019-07-05 | 2019-09-13 | 咖法科技(上海)有限公司 | A kind of coffee grounds polylactic acid and preparation method thereof |
| CN110283437A (en) * | 2019-05-16 | 2019-09-27 | 陆焕炯 | Plastic composite containing coffee grounds and preparation method thereof |
| CN110938285A (en) * | 2018-09-21 | 2020-03-31 | 广西大学 | Bagasse and glass fiber composite reinforced epoxy resin material and preparation method thereof |
-
2020
- 2020-12-10 CN CN202011438179.0A patent/CN112552647A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1352628A (en) * | 1970-11-04 | 1974-05-08 | Ciba Geigy Ag | Process for the manufacture of thermosetting plastic moulded articles having a glossy stain resistant surface |
| CN101798466A (en) * | 2010-03-16 | 2010-08-11 | 龙海市奈特化工有限责任公司 | Natural fiber composite material and preparation method thereof |
| CN104744920A (en) * | 2013-12-25 | 2015-07-01 | 三晃股份有限公司 | Polymer composite and product and preparation method thereof |
| CN106147166A (en) * | 2016-06-28 | 2016-11-23 | 浙江谷林生物材料有限公司 | A kind of polylactic acid coffee grounds composite modification material |
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| CN110283437A (en) * | 2019-05-16 | 2019-09-27 | 陆焕炯 | Plastic composite containing coffee grounds and preparation method thereof |
| CN110172258A (en) * | 2019-05-30 | 2019-08-27 | 上海互见创意设计有限公司 | A kind of composite polyolefine material and preparation method thereof containing coffee grounds |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113861926A (en) * | 2021-11-23 | 2021-12-31 | 上海灵啊实业有限公司 | Bi-component polyurethane adhesive and coffee grounds composition and preparation method thereof |
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Application publication date: 20210326 |