CN108822567A - A kind of formula and preparation method thereof preparing color masterbatch using garbage reclamation material - Google Patents
A kind of formula and preparation method thereof preparing color masterbatch using garbage reclamation material Download PDFInfo
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- CN108822567A CN108822567A CN201810399727.XA CN201810399727A CN108822567A CN 108822567 A CN108822567 A CN 108822567A CN 201810399727 A CN201810399727 A CN 201810399727A CN 108822567 A CN108822567 A CN 108822567A
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- Prior art keywords
- color
- masterbatch
- plastics composite
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- building materials
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/10—Homopolymers or copolymers of propene
- C08J2423/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2497/00—Characterised by the use of lignin-containing materials
- C08J2497/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- 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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
-
- 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
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/013—Fillers, pigments or reinforcing additives
Abstract
The present invention relates to the technology for producing fields of color masterbatch, it is concretely a kind of formula and preparation method thereof that Masterbatch is prepared using garbage reclamation material, the present invention is mainly made of wood plastics composite building materials reclaimed materials and wood plastics composite building materials with color masterbatch, and the wood plastics composite building materials reclaimed materials is made of 60% ~ 80% sawdust and 40% ~ 20% PP reclaimed materials；Wood plastics composite building materials are mainly made of 30% ~ 60% pigment, 5% dispersing agent, 30% ~ 60% polyethylene wax, 4% ~ 6% antioxidant, 8% ~ 12% light stabilizer with color masterbatch, the present invention is compared with prior art, color masterbatch is prepared using discarded sawdust and PP reclaimed materials as carrier, greatly reduce the cost of manufacture, the feature of environmental protection recycled with waste, in the selection of pigment, inorganic pigment has good light resistance and weatherability, can more meet the requirement of Wood-plastic floor.
Description
Technical field
It is concretely a kind of to prepare color using garbage reclamation material the present invention relates to the technology for producing field of color masterbatch
Formula of masterbatch and preparation method thereof.
Background technique
Color masterbatch is to be configured to the mixture of high concentration color by resin and a large amount of pigment (up to 50%) or dyestuff, and color masterbatch is again
Name color kind, is aggregation prepared by a kind of pigments or dyes super quantity are uniformly attached among resin, with few when processing
Measure color masterbatch and the blending of uncolored resin, so that it may reach the pigmentary resin or product of design pigment concentration.
At present color masterbatch and function color masterbatch be widely used in polyethylene, polypropylene, polystyrene, ABS, nylon, PC,
In the resins such as PMMA, PET, motley fiber, clothes, daily plastic, electric wire and cable, household electrical appliance, agriculture have been produced
With products such as film, automobile parts, care appliances.
With the propulsion of Sustainable Development Construction, environmental protection becomes one of the theory of all industrialization enterprises, not only to reduce
The discharge of waste is more to realize that scrap concrete recycles in the fabrication process.
Design thus it is a kind of can be using the color masterbatch and its manufacturing method of scrap concrete manufacture very it is necessary to.
Summary of the invention
The present invention breaches the problem of the prior art, devises a kind of formula that color masterbatch can be manufactured using scrap concrete
And its manufacturing method.
In order to achieve the above object, the present invention devises a kind of formula and its system that color masterbatch is prepared using garbage reclamation material
Preparation Method, it is characterised in that：It is mainly made of wood plastics composite building materials reclaimed materials and wood plastics composite building materials with color masterbatch, the wood
Modeling composite building material reclaimed materials is made of 60% ~ 80% sawdust and 40% ~ 20% PP reclaimed materials；Wood plastics composite building materials color masterbatch
Mainly stablized by 30% ~ 60% pigment, 5% dispersing agent, 30% ~ 60% polyethylene wax, 4% ~ 6% antioxidant, 8% ~ 12% light
Agent composition, the mass percentage content summation of the above components are 100%；
Preparation method is as follows：
Step 1：Wood plastics composite building materials reclaimed materials is taken, pigment, antioxidant, dispersing agent, polyethylene wax, light stabilizer is added, into
The prefabricated material preparation of row, obtains prefabricated material A；
Step 2：Range estimation judges the color difference between the color and aim colour of prefabricated material A, and color difference, then record the prefabricated material if it does not exist
The list of ingredients of A determines pigment, antioxidant, dispersing agent, polyethylene wax, the ratio between light stabilizer, that is, wood plastics composite has been determined
The specific proportion of building materials color masterbatch is adjusted amount of pigment, if there is color difference then return step 1 until being not present
Color difference.
Step 3：After the specific proportion of wood plastics composite building materials color masterbatch has been determined, according to the ratio, it is multiple to carry out wood moulding
The feeding metering for building material color masterbatch jointly, preheats high-speed mixer to 70 DEG C ~ 110 DEG C, is put into acquired wood plastics composite building materials
With color masterbatch, mixed at high speed is carried out, mixing temperature is 130 DEG C ~ 140 DEG C, until sufficiently circulating cooling is opened after melting mixing
Water is cooled to room temperature, and mixture is discharged；
Step 3：Mixture is put into three-roller and is ground, opens the granules of pigments aggregate in material, to reach
Color is uniform；
Step 4：The uniform mixture of color is put into pulverizer and is crushed, the consistent color masterbatch of granular size is formed；
Step 5：It is steady according to wood plastics composite building materials reclaimed materials in prefabricated material A and pigment, antioxidant, dispersing agent, polyethylene wax, light
Determine the proportion of agent, weigh wood plastics composite building materials reclaimed materials again and Masterbatch that step 4 prepares, i.e., is replaced using Masterbatch
Pigment, antioxidant, dispersing agent, polyethylene wax, light stabilizer in prefabricated material A；It is used later using weighed wood plastics composite building materials
Reclaimed materials and Masterbatch carry out prefabricated material preparation identical with step 1, form Masterbatch sheet material；
Step 6：Range estimation judges that the color difference between Masterbatch sheet material and prefabricated material A, aim colour, solid colour are qualification, and color is not
It is consistent then to be unqualified, need to return to step 1, re-start preparation, until verifying qualification.
The pigment is inorganic pigment.
The dispersing agent is the smooth trioleate class of sorb.
The antioxidant is phosphorous acid esters and hindered phenol anti-oxidants.
The light stabilizer is hindered amine light stabilizer.
The prefabricated material preparation the specific steps are：Wood plastics composite building materials are melted on two roller machines with reclaimed materials, are added
The pigment that weighs up, dispersing agent, antioxidant, polyethylene wax, light stabilizer, be kneaded uniformly, mixture be placed on electronic with putty shovel
Between two pressing plates of vulcanization shaping apparatus, sheet material is taken out in compression moulding and cooling, and according to target color table face fineness is selected corresponding
Sand paper, surface polishing is carried out to it.
The distance between described two pressing plates are 1mm.
Compared with prior art, the present invention preparing color masterbatch as carrier using discarded sawdust and PP reclaimed materials, greatly
The cost for reducing manufacture, with waste recycle the feature of environmental protection, in the selection of pigment, inorganic pigment have it is good
Light resistance and weatherability can more meet the requirement of Wood-plastic floor.
Specific embodiment
In specific implementation, the present invention devises a kind of formula and its preparation side that color masterbatch is prepared using garbage reclamation material
Method is mainly made of wood plastics composite building materials reclaimed materials and wood plastics composite building materials with color masterbatch, and the wood plastics composite building materials are used back
Rewinding is made of 60% ~ 80% sawdust and 40% ~ 20% PP reclaimed materials；Wood plastics composite building materials are with color masterbatch mainly by 30% ~ 60%
Pigment, 5% dispersing agent, 30% ~ 60% polyethylene wax, 4% ~ 6% antioxidant, 8% ~ 12% light stabilizer composition, it is above each
The mass percentage content summation of component is 100%；
Preparation method is as follows：
Step 1：Wood plastics composite building materials reclaimed materials is taken, pigment, antioxidant, dispersing agent, polyethylene wax, light stabilizer is added, into
The prefabricated material preparation of row, obtains prefabricated material A；
Step 2：Range estimation judges the color difference between the color and aim colour of prefabricated material A, and color difference, then record the prefabricated material if it does not exist
The list of ingredients of A determines pigment, antioxidant, dispersing agent, polyethylene wax, the ratio between light stabilizer, that is, wood plastics composite has been determined
The specific proportion of building materials color masterbatch is adjusted amount of pigment, if there is color difference then return step 1 until being not present
Color difference.
Step 3：After the specific proportion of wood plastics composite building materials color masterbatch has been determined, according to the ratio, it is multiple to carry out wood moulding
The feeding metering for building material color masterbatch jointly, preheats high-speed mixer to 70 DEG C ~ 110 DEG C, is put into acquired wood plastics composite building materials
With color masterbatch, mixed at high speed is carried out, mixing temperature is 130 DEG C ~ 140 DEG C, until sufficiently circulating cooling is opened after melting mixing
Water is cooled to room temperature, and mixture is discharged；
Step 3：Mixture is put into three-roller and is ground, opens the granules of pigments aggregate in material, to reach
Color is uniform；
Step 4：The uniform mixture of color is put into pulverizer and is crushed, the consistent color masterbatch of granular size is formed；
Step 5：It is steady according to wood plastics composite building materials reclaimed materials in prefabricated material A and pigment, antioxidant, dispersing agent, polyethylene wax, light
Determine the proportion of agent, weigh wood plastics composite building materials reclaimed materials again and Masterbatch that step 4 prepares, i.e., is replaced using Masterbatch
Pigment, antioxidant, dispersing agent, polyethylene wax, light stabilizer in prefabricated material A；It is used later using weighed wood plastics composite building materials
Reclaimed materials and Masterbatch carry out prefabricated material preparation identical with step 1, form Masterbatch sheet material；
Step 6：Range estimation judges that the color difference between Masterbatch sheet material and prefabricated material A, aim colour, solid colour are qualification, and color is not
It is consistent then to be unqualified, need to return to step 1, re-start preparation, until verifying qualification.
Pigment in the present invention is inorganic pigment.
Dispersing agent in the present invention is the smooth trioleate class of sorb.
Antioxidant in the present invention is phosphorous acid esters and hindered phenol anti-oxidants.
Light stabilizer in the present invention is hindered amine light stabilizer.
In the present invention preparation of prefabricated material the specific steps are：Wood plastics composite building materials are melted on two roller machines with reclaimed materials,
Pigment, dispersing agent, antioxidant, polyethylene wax, the light stabilizer weighed up is added, is kneaded uniformly with putty shovel, mixture is placed on
Between two pressing plates of electronic vulcanization shaping apparatus, sheet material is taken out in compression moulding and cooling, and according to target color table face fineness is selected
Corresponding sand paper carries out surface polishing to it.
The distance between two pressing plates are 1mm in the present invention.
Embodiment：
Aim colour is the preparation of khaki color masterbatch：
100 grams of wood plastics composite building materials reclaimed materials is taken first, and pigment yellow 42 measures 2 grams, and paratonere 101 measures 1 gram, antioxidant meter
0.5 gram of amount, dispersing agent measure 0.5 gram, and light stabilizer measures 1 gram, and polyethylene wax measures 5 grams, by pigment and wood plastics composite building materials
It sufficiently melted, be kneaded using two roller machines with reclaimed materials, then mixture is put on electronic vulcanization shaping apparatus, it is pressed into
Sheet material dress, forms the prefabricated material of khaki, is compared later using the color difference that range estimation carries out the prefabricated material of khaki and aim colour, determines two
After person's color is almost the same, the basic recipe ratio of khaki Masterbatch is determined that, i.e. pigment yellow 42：Paratonere 101：Antioxygen
Agent：Dispersing agent：Light stabilizer：Polyethylene wax=20：10：5：5：10：50.
Secondly the preparation of Masterbatch is carried out according to the basic recipe ratio of the khaki Masterbatch of above-mentioned determination：First, in accordance with
The ratio carries out feeding metering, high-speed mixer is preheating to 70 DEG C ~ 110 DEG C or so, and weighed each component is put into high speed
Mixing machine, mixed at high speed mix each components such as pigment, antioxidant, dispersing agent in proportion adequately, when mixed at high speed heats temperature
When degree rises to 130 DEG C ~ 140 DEG C or so, the polyethylene wax in proportion melts, it is made effectively to stick together with other components,
Preliminary mixing bonding is formed, mixture is formed；Mixture is put into three-roller later, three times to four times mixings is carried out and grinds
Mill, makes material further be kneaded bonding, opens the granules of pigments aggregate in material, thus uniform to color；Then will
The uniform mixture of color is put into pulverizer, is carried out crushing and processing, is formed the khaki color masterbatch of granular size.
It finally needs to verify khaki color masterbatch, it is whether almost the same with the color of aim colour to verify it.
Verification process is as follows：Inspector mix colours according to 10：1 ratio takes wood plastics composite building materials reclaimed materials and khaki color
Then masterbatch is kneaded using two roller machines, allow khaki color masterbatch and wood plastics composite building materials to be adequately kneaded with reclaimed materials, shape
At mixture, mixture is placed on electronic vulcanization shaping apparatus and is pressed into sheet material dress, forms khaki color masterbatch media sheet；Range estimation should later
Sheet material and aim colour, the prefabricated material of khaki, compare color, when color is almost the same, wood plastics composite building materials khaki color
Masterbatch is completed to be expected；When color and aim colour have color difference, its wood plastics composite building materials is modified with khaki color masterbatch and is matched
It closes, it is finally almost the same with the aim colour of client.
Claims (7)
1. a kind of formula and preparation method thereof for preparing color masterbatch using garbage reclamation material, it is characterised in that：Mainly answered by wood moulding
It builds material reclaimed materials jointly and wood plastics composite building materials is formed with color masterbatch, the wood plastics composite building materials reclaimed materials is by 60% ~ 80%
Sawdust and 40% ~ 20% PP reclaimed materials composition；Wood plastics composite building materials are with color masterbatch mainly by 30% ~ 60% pigment, 5% dispersion
Agent, 30% ~ 60% polyethylene wax, 4% ~ 6% antioxidant, 8% ~ 12% light stabilizer composition, the quality percentage of the above components
It is 100% than content summation；
Preparation method is as follows：
Step 1：Wood plastics composite building materials reclaimed materials is taken, pigment, antioxidant, dispersing agent, polyethylene wax, light stabilizer is added, into
The prefabricated material preparation of row, obtains prefabricated material A；
Step 2：Range estimation judges the color difference between the color and aim colour of prefabricated material A, and color difference, then record the prefabricated material if it does not exist
The list of ingredients of A determines pigment, antioxidant, dispersing agent, polyethylene wax, the ratio between light stabilizer, that is, wood plastics composite has been determined
The specific proportion of building materials color masterbatch is adjusted amount of pigment, if there is color difference then return step 1 until being not present
Color difference；
Step 3：After the specific proportion of wood plastics composite building materials color masterbatch has been determined, according to the ratio, carries out wood plastics composite and build
The feeding of material color masterbatch is measured, and is preheated high-speed mixer to 70 DEG C ~ 110 DEG C, is put into acquired wood plastics composite building materials color
Masterbatch carries out mixed at high speed, and mixing temperature is 130 DEG C ~ 140 DEG C, until recirculated cooling water is opened sufficiently after melting mixing, it is cold
But room temperature is arrived, mixture is discharged；
Step 3：Mixture is put into three-roller and is ground, opens the granules of pigments aggregate in material, to reach
Color is uniform；
Step 4：The uniform mixture of color is put into pulverizer and is crushed, the consistent color masterbatch of granular size is formed；
Step 5：It is steady according to wood plastics composite building materials reclaimed materials in prefabricated material A and pigment, antioxidant, dispersing agent, polyethylene wax, light
Determine the proportion of agent, weigh wood plastics composite building materials reclaimed materials again and Masterbatch that step 4 prepares, i.e., is replaced using Masterbatch
Pigment, antioxidant, dispersing agent, polyethylene wax, light stabilizer in prefabricated material A；It is used later using weighed wood plastics composite building materials
Reclaimed materials and Masterbatch carry out prefabricated material preparation identical with step 1, form Masterbatch sheet material；
Step 6：Range estimation judges that the color difference between Masterbatch sheet material and prefabricated material A, aim colour, solid colour are qualification, and color is not
It is consistent then to be unqualified, need to return to step 1, re-start preparation, until verifying qualification.
2. a kind of formula and preparation method thereof for preparing color masterbatch using garbage reclamation material according to claim 1, special
Sign is：The pigment is inorganic pigment.
3. a kind of formula and preparation method thereof for preparing color masterbatch using garbage reclamation material according to claim 1, special
Sign is：The dispersing agent is the smooth trioleate class of sorb.
4. a kind of formula and preparation method thereof for preparing color masterbatch using garbage reclamation material according to claim 1, special
Sign is：The antioxidant is phosphorous acid esters and hindered phenol anti-oxidants.
5. a kind of formula and preparation method thereof for preparing color masterbatch using garbage reclamation material according to claim 1, special
Sign is：The light stabilizer is hindered amine light stabilizer.
6. a kind of formula and preparation method thereof for preparing color masterbatch using garbage reclamation material according to claim 1, special
Sign is：The prefabricated material preparation the specific steps are：Wood plastics composite building materials are melted on two roller machines with reclaimed materials, is added and claims
Pigment well, dispersing agent, antioxidant, polyethylene wax, light stabilizer, are kneaded uniformly with putty shovel, and mixture is placed on electronic add
Between two pressing plates of sulphur molding machine, sheet material is taken out in compression moulding and cooling, and according to target color table face fineness is selected corresponding
Sand paper carries out surface polishing to it.
7. a kind of formula and preparation method thereof for preparing color masterbatch using garbage reclamation material according to claim 6, special
Sign is：The distance between described two pressing plates are 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810399727.XA CN108822567A (en) | 2018-04-28 | 2018-04-28 | A kind of formula and preparation method thereof preparing color masterbatch using garbage reclamation material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810399727.XA CN108822567A (en) | 2018-04-28 | 2018-04-28 | A kind of formula and preparation method thereof preparing color masterbatch using garbage reclamation material |
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| CN108822567A true CN108822567A (en) | 2018-11-16 |
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| CN201810399727.XA Withdrawn CN108822567A (en) | 2018-04-28 | 2018-04-28 | A kind of formula and preparation method thereof preparing color masterbatch using garbage reclamation material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109897208A (en) * | 2019-03-28 | 2019-06-18 | 杭州人通管业有限公司 | A kind of fire-retardant corrosion proof cable protection pipe of drag reduction formula and its preparation process |
| EP3904447A1 (en) * | 2020-04-30 | 2021-11-03 | Zouping Damei Rubber And Plastic Technology Co., Ltd. | A multi-color wood-plastic molded material, a process for producing the same and a wood-plastic composite board |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962484A (en) * | 2010-09-28 | 2011-02-02 | 浙江中元枫叶管业有限公司 | Formula of PE (Poly Ethylene) wood plastic composite material of imitation wood grain surface and manufacture process thereof |
| CN104387666A (en) * | 2014-11-13 | 2015-03-04 | 东莞市金彩色母有限公司 | Ultraviolet-resistant oxidation-resistant color master batch and preparation method thereof |
| CN104744955A (en) * | 2013-12-25 | 2015-07-01 | 深圳市格林美高新技术股份有限公司 | Full-body graining polyethylene plastic wood composite and preparation method thereof |
| CN106336570A (en) * | 2016-08-15 | 2017-01-18 | 上海俊尓新材料有限公司 | Polypropylene material prepared by using polypropylene non-woven fabric recycled material, and preparation and application thereof |
-
2018
- 2018-04-28 CN CN201810399727.XA patent/CN108822567A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962484A (en) * | 2010-09-28 | 2011-02-02 | 浙江中元枫叶管业有限公司 | Formula of PE (Poly Ethylene) wood plastic composite material of imitation wood grain surface and manufacture process thereof |
| CN104744955A (en) * | 2013-12-25 | 2015-07-01 | 深圳市格林美高新技术股份有限公司 | Full-body graining polyethylene plastic wood composite and preparation method thereof |
| CN104387666A (en) * | 2014-11-13 | 2015-03-04 | 东莞市金彩色母有限公司 | Ultraviolet-resistant oxidation-resistant color master batch and preparation method thereof |
| CN106336570A (en) * | 2016-08-15 | 2017-01-18 | 上海俊尓新材料有限公司 | Polypropylene material prepared by using polypropylene non-woven fabric recycled material, and preparation and application thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109897208A (en) * | 2019-03-28 | 2019-06-18 | 杭州人通管业有限公司 | A kind of fire-retardant corrosion proof cable protection pipe of drag reduction formula and its preparation process |
| EP3904447A1 (en) * | 2020-04-30 | 2021-11-03 | Zouping Damei Rubber And Plastic Technology Co., Ltd. | A multi-color wood-plastic molded material, a process for producing the same and a wood-plastic composite board |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181116 |
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