CN111004452A - Preparation method of high-strength PP material containing coffee grounds - Google Patents
Preparation method of high-strength PP material containing coffee grounds Download PDFInfo
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- CN111004452A CN111004452A CN201911238914.0A CN201911238914A CN111004452A CN 111004452 A CN111004452 A CN 111004452A CN 201911238914 A CN201911238914 A CN 201911238914A CN 111004452 A CN111004452 A CN 111004452A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/14—Copolymers of propene
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- 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
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L99/00—Compositions of natural macromolecular compounds or of derivatives thereof not provided for in groups C08L89/00 - C08L97/00
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/22—Halogen free composition
Abstract
The invention provides a high-strength PP material containing coffee grounds, which comprises the following components: and (3) copolymerization of PP: 35-45%, coffee grounds: 30-45%, talc powder: 5-10%, ultraviolet absorber: 0.2-0.4%, antioxidant: 0.2-0.4%, lubricant: 0.2 to 0.5 percent. The process comprises the following steps: firstly, adding the component materials into a mixing barrel according to the proportion to be uniformly mixed; then adding the mixture into a double-screw extruder for mixing; the first section and the second section of the double-screw extruder have the extrusion temperature of 160-170 ℃, the extrusion temperature of other sections of the double-screw extruder is 170-190 ℃, and the total residence time of reactants in the double-screw extruder is 3-5 min; and finally, extruding the obtained material, cooling and granulating to obtain the high-strength PP material containing coffee grounds. By modifying PP, the flame retardant is environment-friendly and flame retardant, and can meet the long-term outdoor anti-aging use requirement.
Description
Technical Field
The invention belongs to the technical field of spinning, and particularly relates to a method for manufacturing a high-strength PP material containing coffee grounds.
Background
Polypropylene, PP for short, is a colorless, odorless, nontoxic and semitransparent solid substance.
Polypropylene (PP) is a thermoplastic synthetic resin with excellent performance, and is colorless translucent thermoplastic light general-purpose plastic. The polypropylene has chemical resistance, heat resistance, electrical insulation, high-strength mechanical property, good high-wear-resistance processing property and the like, so that the polypropylene can be rapidly and widely developed and applied in a plurality of fields such as machinery, automobiles, electronic and electric appliances, buildings, textiles, packaging, agriculture, forestry, fishery, food industry and the like since the coming out.
In recent years, with the rapid development of the industries such as packaging, electronics, automobiles and the like in China, the development of the industries in China is greatly promoted.
And because of its plasticity, polypropylene materials are gradually replacing wooden products, and the mechanical functions of metals have been gradually replaced by high strength toughness and high wear resistance. In addition, the polypropylene has good grafting and compounding functions, and has huge application space in the aspects of concrete, textile, packaging and agriculture, forestry and fishery.
However, the impact performance of pure polypropylene composite materials is poor, and at present, the impact performance is improved by adding a compatilizer or an elastomer, for example, in the national patent CN1821295A, an ionic polymer (ethylene-methacrylic acid copolymer) is added as the compatilizer, the dosage proportion is 5 wt% -10 wt% of the mixture, but the cost of the method is relatively high. The literature "The preparation and research chemistry of long chain branching polypropylene" (Polymer 47(2006) 7962-7969) mentions The preparation of long chain branched polypropylene by reaction processing, which has improved impact properties.
However, such treatment requires additional preparation of long-chain branched compounds, and the cost is always high.
Disclosure of Invention
The invention aims to provide the high-strength PP material containing the coffee grounds, which can effectively reduce the cost, improve the heat resistance and the high-temperature stability, increase the tensile strength and the elongation at break and improve the resilience and the crease resistance of fibers and fabrics.
The invention also aims to provide a novel anti-wrinkle fabric which can increase the resilience and anti-wrinkle performance of the fabric so as to bear the deformation of the fabric caused by rubbing and twisting; the dye-uptake and dye-uptake rate of the fiber can be improved, the color fastness to dyeing and washing is improved, and the color durability and shape retention of the fiber and the fabric are improved; the high-strength PP material containing coffee grounds can shorten the time consumption of a dyeing process and obviously reduce the production cost and energy consumption.
The technical scheme adopted by the invention for realizing the purpose is as follows:
a high-strength PP material containing coffee grounds comprises the following components: the high-strength PP material containing coffee grounds is characterized by comprising the following components in percentage by weight: and (3) copolymerization of PP: 35-45%, coffee grounds: 30-45%, talc powder: 5-10%, ultraviolet absorber: 0.2-0.4%, antioxidant: 0.2-0.4%, lubricant: 0.2 to 0.5 percent.
Further, the high-strength PP material containing coffee grounds comprises the following components: and (3) copolymerization of PP: 40%, coffee grounds: 43%, talc powder: 7%, ultraviolet absorber: 0.3%, antioxidant: 0.4%, lubricant: 0.3 percent.
Furthermore, the melt index of the copolymerized PP is 10-20 g/10 min; the particle size of the talcum powder is 1250-2000 meshes; the coffee grounds are phosphorus-nitrogen halogen-free flame retardants; the ultraviolet absorbent is a compound of an ultraviolet absorbent 770 and an ultraviolet absorbent 2020; the antioxidant is a compound of an antioxidant 1010 and an antioxidant 168; the lubricant is ethylene bis stearamide.
The preparation method of the high-strength PP material containing coffee grounds comprises the following steps:
① mixing the raw materials uniformly, namely adding the component materials into a mixing barrel according to the proportion to mix uniformly;
②, mixing in a double-screw extruder, namely adding the mixture obtained in the step ① into the double-screw extruder for mixing, wherein the double-screw extruder has six sections, the extrusion temperature of the first section and the second section is 160-170 ℃, the extrusion temperature of other sections is 170-190 ℃, the total residence time of reactants in the double-screw extruder is 3-5 min, and the rotation speed of the double-screw extruder is 300-350 r.min < -1 >;
③ extruding the obtained material, cooling and cutting into granules to obtain the high-strength PP material containing coffee grounds.
Further, the preparation method of the high-strength PP material containing the coffee grounds comprises the following steps of firstly, adding 40 parts of copolymerized PP, 43 parts of coffee grounds, 7 parts of talcum powder, 0.3 part of ultraviolet absorbent, 0.4 part of antioxidant and 0.3 part of ethylene bis stearamide into a mixing barrel to be uniformly mixed; then, mixing in a double-screw extruder, wherein the temperature of each section of the double screws is respectively as follows: and the temperature of T1 is 160 ℃, T2 is 170 ℃, T3 is 175 ℃, T4 is 180 ℃, T5 is 185 ℃, T6 is 190 ℃, the rotating speed of a double-screw extruder is r is 350r.min-1, and finally, the PP material is obtained by extrusion, cooling and cutting into granules.
The outstanding substantive features and remarkable progress of the technical scheme of the invention are mainly reflected in that:
① adopts coffee grounds, meets the ROHS environmental protection requirement, has low smoke, low toxicity and no corrosive gas, and has little influence on the PP mechanical property and the processing property;
② the ultraviolet absorbent and the antioxidant are added into the flame-retardant material, so that the oxidation and pulverization processes of the material are effectively slowed down, and the material can meet the outdoor use requirements;
③ the material has a certain toughness by adopting the method of filling and modifying the copolymerization PP and the inorganic filler, and simultaneously improves the rigidity of the material, the inorganic filler adopts the talcum powder to accelerate the crystallization speed of the PP and refine the spherulites of the PP, thereby accelerating the molding speed of injection molding, eliminating the phenomena of sink marks on the surface, large product molding shrinkage and the like caused by the molding shrinkage of the PP, and simultaneously the talcum powder can delay the burning speed of the material, thus being worthy of wide popularization and application in the industry, and having a good prospect.
Detailed Description
The technical solution of the present invention is further described in detail with reference to the following embodiments:
the environment-friendly weather-resistant flame-retardant PP material comprises the following components in percentage by weight: and (3) copolymerization of PP: 35-45%, coffee grounds: 30-45%, talc powder: 5-10%, ultraviolet absorber: 0.2-0.4%, antioxidant: 0.2-0.4%, lubricant: 0.2 to 0.5 percent. The preferable formula is as follows: and (3) copolymerization of PP: 40%, coffee grounds: 43%, talc powder: 7%, ultraviolet absorber: 0.3%, antioxidant: 0.4%, lubricant: 0.3 percent. Wherein the melt index of the copolymerized PP is 10-20 g/10 min; the particle size of the talcum powder is 1250-2000 meshes; the coffee grounds are phosphorus-nitrogen halogen-free flame retardants; the ultraviolet absorbent is a compound of an ultraviolet absorbent 770 and an ultraviolet absorbent 2020; the antioxidant is a compound of antioxidant 1010 and antioxidant 168; the lubricant is ethylene bis stearamide.
The coffee grounds are adopted, so that the environment-friendly ROHS is met, the smoke, the toxicity and the corrosive gas are low, and the influence on the mechanical property and the processing property of the PP is less. In addition, the ultraviolet absorbent and the antioxidant are added into the flame-retardant material, so that the oxidation and pulverization processes of the material are effectively slowed down, and the material can meet the outdoor use requirements. The material has certain toughness by adopting a method of filling and modifying the copolymerized PP and the inorganic filler, meanwhile, the rigidity of the material is improved, the talc powder is selected as the inorganic filler, the crystallization speed of the PP is accelerated, the spherulites of the PP are refined, on one hand, the molding speed of injection molding is accelerated, and on the other hand, the phenomena of sink mark surfaces, large product molding shrinkage and the like caused by PP molding shrinkage are eliminated, and meanwhile, the talc powder can also delay the burning speed of the material.
Example 1:
adding 40 parts of PP copolymer, 43 parts of coffee grounds, 7 parts of talcum powder, 0.3 part of ultraviolet absorbent, 0.4 part of antioxidant and 0.3 part of ethylene bis stearamide into a high-speed mixing barrel to be uniformly mixed; then, mixing in a double-screw extruder, wherein the temperature of each section of the double screws is respectively as follows: and the high-strength PP material containing coffee grounds is obtained by extruding, cooling and cutting the materials into granules, wherein T1 is 160 ℃, T2 is 170 ℃, T3 is 175 ℃, T4 is 180 ℃, T5 is 185 ℃, T6 is 190 ℃, and the rotating speed of a double-screw extruder is 350r.min < -1 >.
Example 2:
adding 45 parts of copolymerized PP, 45 parts of coffee grounds, 9 parts of talcum powder, 0.3 part of ultraviolet absorbent, 0.4 part of antioxidant and 0.3 part of ethylene bis stearamide into a high-speed mixing barrel to be uniformly mixed; then, mixing in a double-screw extruder, wherein the temperature of each section of the double screws is respectively as follows: and the high-strength PP material containing coffee grounds is obtained by extruding, cooling and cutting the materials into granules, wherein T1 is 160 ℃, T2 is 170 ℃, T3 is 175 ℃, T4 is 180 ℃, T5 is 185 ℃, T6 is 190 ℃, and the rotating speed of a double-screw extruder is 350r.min < -1 >.
Example 3:
adding 35 parts of PP copolymer, 40 parts of coffee grounds, 5 parts of talcum powder, 0.3 part of ultraviolet absorbent, 0.4 part of antioxidant and 0.3 part of ethylene bis stearamide into a high-speed mixing barrel to be uniformly mixed; then, mixing in a double-screw extruder, wherein the temperature of each section of the double screws is respectively as follows: and the high-strength PP material containing coffee grounds is obtained by extruding, cooling and cutting the materials into granules, wherein T1 is 160 ℃, T2 is 170 ℃, T3 is 175 ℃, T4 is 180 ℃, T5 is 185 ℃, T6 is 190 ℃, and the rotating speed of a double-screw extruder is 350r.min < -1 >.
Example 4:
adding 40 parts of PP copolymer, 43 parts of coffee grounds, 7.3 parts of talcum powder, 0.4 part of antioxidant and 0.3 part of ethylene bis stearamide into a high-speed mixing barrel to be uniformly mixed; then, mixing in a double-screw extruder, wherein the temperature of each section of the double screws is respectively as follows: and the temperature of T1 is 160 ℃, T2 is 170 ℃, T3 is 175 ℃, T4 is 180 ℃, T5 is 185 ℃, T6 is 190 ℃, the rotating speed of a double-screw extruder is r is 350r.min-1, and finally, the PP material is obtained by extrusion, cooling and cutting into granules.
Through detection, the main technical performance indexes of the modified polypropylene material obtained by adopting the technical scheme of the invention are shown in table 1. The tensile properties of the materials were measured according to the GB1040 standard, the flexural modulus according to GB9341 on a Tinius Olsen materials tester, UK, the impact properties were measured according to the GB 1843 standard on an impact tester, Chengdu, the melt index was measured according to the GB3682 standard on a melt index tester, manufactured by Shanghai Sidescientific instruments, Ltd, and the Rockwell hardness was measured according to the GB 9342 standard on a Rockwell hardness tester, manufactured by Shanghai materials testing machine.
The intumescent halogen-free flame retardant is added into the complex system, so that the material has excellent flame retardant effect; the addition of the ultraviolet absorber plays a crucial role in the weather resistance of the material; the addition of the talcum powder reduces the molding shrinkage rate and improves the rigidity of the material.
In conclusion, the invention obviously shows that the modified polypropylene material prepared by modifying the general resin PP has excellent performance and good weather resistance, brings considerable social benefit and economic benefit, and can be applied to products such as storage batteries and the like.
The above is only a specific application example of the present invention, and the protection scope of the present invention is not limited in any way. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention
Example 5:
this embodiment differs from embodiment 2 only in that: the penetrant used in the step (2) contains 0.03 wt% of tetraisopropyl titanate and 0.05 wt% of pentaerythritol, the tetraisopropyl titanate and the pentaerythritol are added into the penetrant to achieve a synergistic effect on the permeated yarns and can also permeate into gaps inside the yarns, the tolerance of the fibers to water is improved by utilizing hydrophilic groups, so that the surface wettability of the internal fibers is increased, the dye-uptake rate and the dye-uptake rate of the dye in the subsequent dyeing process are improved, the time consumption of the dyeing process is shortened, the time cost and the energy consumption are saved, in addition, the dye is fixed on the surfaces of the fibers by the tetraisopropyl titanate and the pentaerythritol, the dye-uptake rate and the dye-uptake rate of the fibers are increased, the dye-uptake rate and the dye-uptake rate of the dye in the subsequent dyeing process are.
Example 6:
this embodiment differs from embodiment 1 only in that: the polylactic acid raw material is only poly-L-lactic acid, the viscosity average molecular weight of PLLA is 130kDa, and the molar content of L optical isomer is 98.9 percent.
Example 7:
this embodiment differs from embodiment 2 only in that: the high-strength PP material containing coffee grounds obtained in example 4 was used to prepare a high-strength PP material containing coffee grounds.
Example 8:
this embodiment differs from embodiment 1 only in that: the toughening agent in the step (2) is polymethyl methacrylate, and phenylacetic acid-2-methylpropyl ester is not added.
Example 9:
this embodiment differs from embodiment 2 only in that: the high-strength PP material containing coffee grounds obtained in example 6 was used to prepare a high-strength PP material containing coffee grounds.
Example 10:
this embodiment differs from embodiment 1 only in that: the polylactic acid raw material is only poly-L-lactic acid, the viscosity average molecular weight of PLLA is 130kDa, and the molar content of L optical isomer is 98.9 percent; meanwhile, the toughening agent in the step (2) is polymethyl methacrylate, and phenylacetic acid-2-methylpropyl ester is not added.
Example 11:
this embodiment differs from embodiment 2 only in that: the high-strength PP material containing coffee grounds obtained in example 8 was used to prepare a high-strength PP material containing coffee grounds.
Test example 1:
tensile property test of high-strength PP (polypropylene) material containing coffee grounds
The test method comprises the following steps: the high-strength PP materials containing coffee grounds prepared in examples 1, 4, 6 and 8 were taken, and the fracture strength and the elongation at break of the biomass graphene modified polylactic acid fiber were measured by an LLY-06E type electronic single fiber strength tester, wherein the tensile speed was set at 20mm/min, the holding distance was set at 10mm, each sample was measured for 20 times, and the results were averaged. The test results are shown in table 1 below.
TABLE 1 impact test results for high strength PP materials containing coffee grounds
As can be seen from the above table, the tensile strength and elongation at break of the high-strength PP material containing coffee grounds are superior to those of the high-strength PP material in a dry state; the tensile strength and elongation at break of example 1 are optimal; examples 4 and 6 both exhibited a reduced tendency in tensile strength and elongation at break compared to example 1, but the reduction in example 6 was more pronounced than in example 4; the tensile strength and elongation at break of example 8 are the worst; in conclusion, the phenylacetic acid-2-methyl propyl ester and the poly-D-lactic acid in the toughening agent have obvious gain effect on the improvement of the tensile strength and the elongation at break of the fiber, and the effect is not as good as the synergistic effect of the two when the toughening agent is used singly.
Test example 2:
crease elasticity test of high-strength PP material containing coffee grounds
The test method comprises the following steps: the high-strength PP materials prepared in examples 2, 5, 7 and 9 are taken as test samples, and the wrinkle recovery angle of the fabric is tested by a YG541 type fabric wrinkle elasticity tester according to GB/T3819-1997 test method for measuring recovery angle method of fabric crease recovery. The results are shown in table 2 below.
TABLE 2 wrinkle elasticity test results for high strength PP material containing coffee grounds
The larger the wrinkle recovery angle, the better the wrinkle resistance. As can be seen from the above table, the wrinkle recovery angle of example 2 is the largest, and both the wrinkle recovery angles of example 5 and example 7 show a decreasing trend compared to example 2, but the decrease of example 7 is more significant than that of example 5; the crease recovery angle of example 9 was minimal; in conclusion, the phenylacetic acid-2-methyl propyl ester and the poly-D-lactic acid in the toughening agent have a remarkable effect of improving the wrinkle recovery angle of the fiber and the fabric, the effect is not as good as the synergistic effect of the two when the toughening agent is used singly, and the two are beneficial to enabling the fiber and the fabric to show better rebound resilience and wrinkle resistance.
Conventional techniques in the above embodiments are known to those skilled in the art, and therefore, will not be described in detail herein.
The above embodiments are merely illustrative, and not restrictive, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention, and the protection scope of the present invention should be defined by the claims.
Claims (10)
1. The high-strength PP material containing coffee grounds is characterized by comprising the following components in percentage by weight: and (3) copolymerization of PP: 35-45%, coffee grounds: 30-45%, talc powder: 5-10%, ultraviolet absorber: 0.2-0.4%, antioxidant: 0.2-0.4%, lubricant: 0.2 to 0.5 percent.
2. The high-strength PP material containing coffee grounds as claimed in claim 1, is characterized by comprising the following components in percentage by weight: and (3) copolymerization of PP: 40%, coffee grounds: 43%, talc powder: 7%, ultraviolet absorber: 0.3%, antioxidant: 0.4%, lubricant: 0.3 percent.
3. The high strength PP material containing coffee grounds according to claim 1 or 2, wherein: the melt index of the copolymerized PP is 10-20 g/10 min.
4. The high strength PP material containing coffee grounds according to claim 1 or 2, wherein: the particle size of the talcum powder is 1250-2000 meshes.
5. The high strength PP material containing coffee grounds according to claim 1 or 2, wherein: the coffee grounds are phosphorus-nitrogen halogen-free flame retardants.
6. The high strength PP material containing coffee grounds according to claim 1 or 2, wherein: the ultraviolet absorbent is a compound of an ultraviolet absorbent 770 and an ultraviolet absorbent 2020.
7. The high strength PP material containing coffee grounds according to claim 1 or 2, wherein: the antioxidant is a compound of an antioxidant 1010 and an antioxidant 168.
8. The high strength PP material containing coffee grounds according to claim 1 or 2, wherein: the lubricant is ethylene bis stearamide.
9. A method for preparing the high-strength PP material containing coffee grounds as claimed in claim 1, wherein: the method comprises the following steps:
① mixing the raw materials uniformly, namely adding the component materials into a mixing barrel according to the proportion to mix uniformly;
②, mixing in a double-screw extrusion device, namely adding the mixture obtained in the step ① into a double-screw extruder for mixing, wherein the double-screw extruder has six sections, the extrusion temperature of the first section and the second section is 160-170 ℃, the extrusion temperature of the third section to the sixth section is 170-190 ℃, the total residence time of reactants in the double-screw extruder is 3-5 min, and the rotating speed of the double-screw extruder is 300-350 r/min;
③ extruding the obtained material, cooling and cutting into granules to obtain the high-strength PP material containing coffee grounds.
10. The method for preparing high-strength PP material containing coffee grounds according to claim 9, wherein the method comprises the following steps:
firstly, adding 40 parts of PP copolymer, 27 parts of a compound intumescent halogen-free flame retardant, 7 parts of talcum powder, 0.3 part of an ultraviolet absorbent, 0.4 part of an antioxidant and 0.3 part of ethylene bis stearamide into a mixing barrel to be uniformly mixed;
then, mixing in a double-screw extruder, wherein the temperature of each section of the double screws is respectively as follows: and (3) T1 being 160 ℃, T2 being 170 ℃, T3 being 175 ℃, T4 being 180 ℃, T5 being 185 ℃, T6 being 190 ℃, and the rotating speed of the double-screw extruder being 350r/min, finally extruding, cooling and cutting into granules to obtain the high-strength PP material containing coffee grounds.
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| CN201911238914.0A CN111004452A (en) | 2019-12-06 | 2019-12-06 | Preparation method of high-strength PP material containing coffee grounds |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111874407A (en) * | 2020-08-14 | 2020-11-03 | 咖法科技(上海)有限公司 | Cup with coffee grounds made of synthetic material |
| CN113388200A (en) * | 2021-06-23 | 2021-09-14 | 深圳市科思飞科技有限公司 | Preparation process of recyclable coffee grounds plant fiber polypropylene particles |
| CN115926320A (en) * | 2022-12-28 | 2023-04-07 | 上海金发科技发展有限公司 | Coffee-aroma low-odor heat-aging-resistant polypropylene material and preparation method and application thereof |
-
2019
- 2019-12-06 CN CN201911238914.0A patent/CN111004452A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111874407A (en) * | 2020-08-14 | 2020-11-03 | 咖法科技(上海)有限公司 | Cup with coffee grounds made of synthetic material |
| CN113388200A (en) * | 2021-06-23 | 2021-09-14 | 深圳市科思飞科技有限公司 | Preparation process of recyclable coffee grounds plant fiber polypropylene particles |
| US20220411615A1 (en) * | 2021-06-23 | 2022-12-29 | Shenzhen Consys Science&Technology Co.,Ltd | Process for preparing polypropylene particles by using recyclable coffee grounds plant fibers |
| US11566123B2 (en) * | 2021-06-23 | 2023-01-31 | Shenzhen Consys Science & Technology Co., Ltd | Process for preparing polypropylene particles by using recyclable coffee grounds plant fibers |
| CN115926320A (en) * | 2022-12-28 | 2023-04-07 | 上海金发科技发展有限公司 | Coffee-aroma low-odor heat-aging-resistant polypropylene material and preparation method and application thereof |
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