CN106751991A - High content secondary stock strengthens the preparation method of waste polyethylene composite - Google Patents
High content secondary stock strengthens the preparation method of waste polyethylene composite Download PDFInfo
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- CN106751991A CN106751991A CN201611140955.2A CN201611140955A CN106751991A CN 106751991 A CN106751991 A CN 106751991A CN 201611140955 A CN201611140955 A CN 201611140955A CN 106751991 A CN106751991 A CN 106751991A
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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
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
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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
- 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
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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
- 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
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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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/20—Recycled plastic
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Abstract
The invention discloses the preparation method that a kind of high content secondary stock strengthens waste polyethylene composite, waste paper is pre-processed, optimize secondary stock form, obtain modified secondary stock；Polyethylene, interfacial compatibilizer, PE waxes and the modified secondary stock of a part are added in double screw extruder in the way of uniform charging from main spout upon mixing, additional feeding machine is used to add remaining modified secondary stock with uniform feed way simultaneously, extrusion particle is suppressed with pattern, cooling, the demoulding, obtains final product.Preparation method of the present invention, is that recycling for secondary stock breaks fresh ground with recycling, while effectively improving waste-polyethylene in packing resource utilization rate；The cost of raw material of the present invention is low, small investment, process is simple, and the utilization rate to raw material is high；Obtained high content secondary stock enhancing waste polyethylene composite has good processability, and water imbibition is low, good mechanical performance, is capable of achieving 100% reclaiming and produces.
Description
Technical field
The invention belongs to discard printed apcksging material application technology as the second resource field, and in particular to a kind of secondary fibre of high content
The preparation method of dimension enhancing waste polyethylene composite.
Background technology
Secondary stock typically refers mainly to waste paper fibre and waste paper pulp fiber raw material.Since 21 century, with society
Progress and living standards of the people raising, the consumption figure of domestic paper and cardboard constantly rising.According to China paper industry year
Report statistics, domestic paper and cardboard consumption figure are risen to 103,520,000 tons in 2015 by 43,320,000 tons in 2002, average annual to increase
Rate about 6%.The significantly rising of paper and cardboard consumption figure so that the yield of domestic waste paper rapidly increases.It is well known that waste paper
Recycle and recycling be solve environmental pollution, there is lack of raw materials and the important channel of energy shortage.However, at this stage I
State's waste paper resourcesization are using aspects such as the main focus utilization deinked pulp production Paper or cardboards of technical research, and technology is more single,
Added value of product is relatively small.Explore exploitation waste paper resources using new technology effectively improve waste paper utilization rate and the rate of recovery,
Increasing the aspects such as waste paper added value and environmental protection has important realistic meaning.
Waste paper fibre structure and property are similar to natural plant fibre, price that it has relative moderate, less density,
Elastic modelling quantity higher, especially the advantages of itself biological degradability and recyclability, makes it in the research and development side of new material
Face enjoys concern both at home and abroad.Fill out as thermoplastic polymer based composites are inorganic there are some researches show, waste paper fibre possesses completely
The primary condition of charge.
On the other hand, the treatment at present for packing waste plastics mainly has following several ways：Bury, burn, directly again
Using or be regeneration.Wherein with modified and new with using the method production high added value such as fiber filling or enhancing
Section bar material receives much concern, and this is also the popular domain of current technics of reclaim of plastic waste technical research.China waste or used plastics aboundresources,
Relative low price, waste or used plastics only have a shade of difference with virgin plastics in performance, and effective recycling can be carried out completely.
And waste or used plastics are one of the effective way for solving the problems, such as waste or used plastics reuse in the recycling and reuse of field of compound material, are adopted
It is that raw material prepares advanced composite material (ACM) with waste paper and waste or used plastics, can not only realizes efficient use and reuse of resources, and
Environmental pollution can be reduced, turned waste into wealth, had broad application prospects.
The content of the invention
It is an object of the invention to provide the preparation method that a kind of high content secondary stock strengthens waste polyethylene composite, it is
The high added value recycling of secondary stock and waste-polyethylene in packing raw material provides a kind of new way, and the composite wood for preparing
Material has good processability, and water imbibition is low, and good mechanical performance has a extensive future.
The technical solution adopted in the present invention is that a kind of high content secondary stock strengthens the preparation of waste polyethylene composite
Method, specifically includes following steps：
Step 1, waste paper is pre-processed, optimize secondary stock form, obtain modified secondary stock；
Step 2, weighed according to parts by weight：50-60 parts of pre- modified secondary stock, 37-48 parts of waste polyethylene, and 2-
3.5 parts of interfacial compatibilizers；0.5 part of PE wax；
Step 3, polyethylene, interfacial compatibilizer, PE waxes and the modified secondary stock of a part are mixed at 70-90 DEG C after with
The mode of uniform charging is added in double screw extruder from main spout, while using additional feeding machine to add with uniform feed way
Enter remaining modified secondary stock, extrusion particle is suppressed with pattern, cooling, the demoulding obtains final product composite of the present invention.
The features of the present invention is also resided in,
The specific implementation step of step 1 is：
Step 1.1,50-60 parts of waste paper is weighed according to parts by weight, 1-3.5 parts of coupling agent, 10-30 parts of alcohols solvent；
Step 1.2, the fritter that waste paper is cut into 2cm × 2cm, 4h is dried for 80 DEG C in vacuum drying chamber, standby；Will be even
Connection agent and alcohols solvent are well mixed；
Step 1.3, by coupling agent and alcohols solvent it is well mixed after be uniformly sprayed on waste paper block, be placed in high-speed mixer
In be sufficiently mixed, take out waste paper, reaction 1-2h is stood at room temperature, be then placed in vacuum drying chamber being dried 2 hours at 80 DEG C,
Obtain pre- modified waste paper；
Step 1.4, the pre- modified waste paper for being obtained step 1.3 using pulverizer are crushed, and obtain final product modified secondary stock；Control
Secondary stock average length is about 0.7-1.0cm.
Coupling agent is KH550 silane couplers or titanate coupling agent.
Alcohols solvent is absolute ethyl alcohol or isopropanol.
Step 2 median surface compatilizer is maleic anhydride grafted polyethylene.
Each area's temperature of double screw extruder is set as 170 DEG C -180 DEG C, 180-190 DEG C of head temperature, extruder in step 3
Speed is set as 200-300r/min.
The beneficial effects of the invention are as follows high content secondary stock of the present invention strengthens the preparation side of waste polyethylene composite
Method, is that recycling for secondary stock breaks fresh ground with recycling, while effectively improving waste-polyethylene in packing resource
Utilization rate, economizes on resources, and turns waste into wealth.The cost of raw material of the present invention is low, small investment, process is simple, and the utilization rate to raw material is high；
Obtained high content secondary stock enhancing waste polyethylene composite has good processability, and water imbibition is low, and mechanical property is excellent
It is good, be capable of achieving 100% reclaiming produce, can be widely applied to outdoor flooring, gardens tables and chairs, fence, movable building, furniture and
The fields such as ornament materials.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.
High content secondary stock of the present invention strengthens the preparation method of waste polyethylene composite, specifically includes following steps：
Step 1, waste paper is pre-processed, optimize secondary stock form, obtain modified secondary stock；
Specific implementation step is：
Step 1.1,50-60 parts of waste paper is weighed according to parts by weight, 1-3.5 parts of coupling agent, 10-30 parts of alcohols solvent；It is even
Connection agent is KH550 silane couplers or titanate coupling agent；Alcohols solvent is absolute ethyl alcohol or isopropanol；
Step 1.2, the fritter that waste paper is cut into 2cm × 2cm, 4h is dried for 80 DEG C in vacuum drying chamber, standby；Will be even
Connection agent and alcohols solvent are well mixed；
Step 1.3, by coupling agent and alcohols solvent it is well mixed after be uniformly sprayed on waste paper block, be placed in high-speed mixer
In be sufficiently mixed, take out waste paper, reaction 1-2h is stood at room temperature, be then placed in vacuum drying chamber being dried 2 hours at 80 DEG C,
Obtain pre- modified waste paper；
Step 1.4, the pre- modified waste paper for being obtained step 1.3 using pulverizer are crushed, and obtain final product modified secondary stock；Control
Secondary stock average length is about 0.7-1.0cm；
Step 2, weighed according to parts by weight：50-60 parts of pre- modified secondary stock, 37-48 parts of waste polyethylene, and 2-
3.5 parts of interfacial compatibilizers；0.5 part of PE wax；Interfacial compatibilizer is maleic anhydride grafted polyethylene；
Step 3, polyethylene, interfacial compatibilizer, PE waxes and the modified secondary stock of a part are mixed at 70-90 DEG C after with
The mode of uniform charging is added in double screw extruder from main spout, while using additional feeding machine to add with uniform feed way
Enter remaining modified secondary stock, each area's temperature of double screw extruder is set as 170 DEG C -180 DEG C, 180-190 DEG C of head temperature,
Extruder speed is set as 200-300r/min, and extrusion particle is suppressed with pattern, and cooling, the demoulding obtains final product composite wood of the present invention
Material.
Embodiment 1
Step 1, waste paper is pre-processed, optimize secondary stock form：
Step 1.1,50 parts of waste paper are weighed according to parts by weight, 2 parts of KH550 silane couplers, 30 parts of absolute ethyl alcohols；
Step 1.2, the fritter that the waste paper that step 1.1 is weighed is cut into 2cm × 2cm, 80 DEG C of bakings in vacuum drying chamber
It is dry 4 hours, it is standby；Absolute ethyl alcohol is poured into beaker, KH550 is subsequently adding, mixed solution is uniformly mixing to obtain；
Step 1.3, the mixed solution of step 1.2 is uniformly sprayed on waste paper block using watering can, is placed in high-speed mixer
In be sufficiently mixed, take out waste paper, reaction 2 hours are stood at room temperature, be then placed in vacuum drying chamber drying 2 at 80 DEG C small
When, obtain pre- modified waste paper；
Step 1.4, the pre- modified waste paper for being obtained step 1.3 using pulverizer are crushed, and obtain final product modified secondary stock；Control
Secondary stock average length is about 0.7-1.0cm；
Step 2, weighed according to parts by weight：50 parts of pre- modified secondary stocks, 48 parts of waste polyethylene particles, 2 parts of maleic acids
Acid anhydride grafted polyethylene, 0.5 part of PE wax；
Polyethylene, maleated polyethylene and PE waxes in step 3, the material for weighing step 2 and 30 parts it is pre- modified
Secondary stock is sufficiently mixed in being put into high mixer, and mixing temperature is 80 DEG C；By mixed material in the way of uniform charging from
Main spout is added in double screw extruder, while use additional feeding machine to add remaining 20 parts with uniform feed way changing in advance
Property secondary stock.Each area's temperature of extruder is set as 170 DEG C -180 DEG C, 185 DEG C of head temperature, and extruder speed is set as
250r/min.Extrusion particle is suppressed with pattern, 185 DEG C of press temperature, press time 15min, cooling, the demoulding is obtained this
Invention composite sample A.
Embodiment 2
Step 1, waste paper is pre-processed, optimize secondary stock form：
Step 1.1,50 parts of waste paper are weighed according to parts by weight, 1 part of titanate coupling agent, 10 parts of isopropanols；
Step 1.2, the fritter that the waste paper that step 1.1 is weighed is cut into 2cm × 2cm, 80 DEG C of bakings in vacuum drying chamber
It is dry 4 hours, it is standby；Isopropanol is poured into beaker, titanate coupling agent is subsequently adding, stirred, obtain mixed solution；
Step 1.3, the mixed solution of step 1.2 is uniformly sprayed on waste paper block using watering can, is placed in high-speed mixer
In be sufficiently mixed, take out waste paper, reaction 2 hours are stood at room temperature, be then placed in vacuum drying chamber drying 2 at 80 DEG C small
When, obtain pre- modified waste paper；
Step 1.4, the pre- modified waste paper for being obtained step 1.3 using pulverizer are crushed, and obtain final product modified secondary stock；Control
Secondary stock average length is about 0.7-1.0cm；
Step 2, weighed according to parts by weight：50 parts of pre- modified secondary stocks, 48 parts of waste polyethylene particles, 2 parts of maleic acids
Acid anhydride grafted polyethylene, 0.5 part of PE wax；
Polyethylene, maleated polyethylene and PE waxes in step 3, the material for weighing step 2 and 30 parts it is pre- modified
Secondary stock is sufficiently mixed in being put into high mixer, and mixing temperature is 80 DEG C；By mixed material in the way of uniform charging from
Main spout is added in double screw extruder, while use additional feeding machine to add remaining 20 parts with uniform feed way changing in advance
Property secondary stock.Each area's temperature of extruder is set as 170 DEG C -180 DEG C, 185 DEG C of head temperature, and extruder speed is set as
250r/min.Extrusion particle is suppressed with pattern, 185 DEG C of press temperature, press time 15min, cooling, the demoulding is obtained this
Invention composite sample B.
Embodiment 3
Step 1, waste paper is pre-processed, optimize secondary stock form：
Step 1.1,60 parts of waste paper are weighed according to parts by weight, 2.5 parts of KH550 silane couplers, 30 parts of absolute ethyl alcohols；
Step 1.2, the fritter that the waste paper that step 1.1 is weighed is cut into 2cm × 2cm, 80 DEG C of bakings in vacuum drying chamber
It is dry 4 hours, it is standby；Absolute ethyl alcohol is poured into beaker, KH550 is subsequently adding, stirred, obtain mixed solution；
Step 1.3, the mixed solution of step 1.2 is uniformly sprayed on waste paper block using watering can, is placed in high-speed mixer
In be sufficiently mixed, take out waste paper, reaction 2 hours are stood at room temperature, be then placed in vacuum drying chamber drying 2 at 80 DEG C small
When, obtain pre- modified waste paper；
Step 1.4, the pre- modified waste paper for being obtained step 1.3 using pulverizer are crushed, and obtain final product modified secondary stock；Control
Secondary stock average length is about 0.7-1.0cm；
Step 2, weighed according to parts by weight：60 parts of pre- modified secondary stocks, 38 parts of waste polyethylene particles, 2 parts of maleic acids
Acid anhydride grafted polyethylene, 0.5 part of PE wax；
Polyethylene, maleated polyethylene and PE waxes in step 3, the material for weighing step 2 and 40 parts it is pre- modified
Secondary stock is sufficiently mixed in being put into high mixer, and mixing temperature is 80 DEG C；By mixed material in the way of uniform charging from
Main spout is added in double screw extruder, while use additional feeding machine to add remaining 20 parts with uniform feed way changing in advance
Property secondary stock.Each area's temperature of extruder is set as 170 DEG C -180 DEG C, 185 DEG C of head temperature, and extruder speed is set as
250r/min.Extrusion particle is suppressed with pattern, 185 DEG C of press temperature, press time 15min, cooling, the demoulding is obtained this
Invention composite sample C.
Embodiment 4
Step 1, waste paper is pre-processed, optimize secondary stock form：
Step 1.1,60 parts of waste paper are weighed according to parts by weight, 1.5 parts of titanate coupling agents, 10 parts of isopropanols；
Step 1.2, the fritter that the waste paper that step 1.1 is weighed is cut into 2cm × 2cm, 80 DEG C of bakings in vacuum drying chamber
It is dry 4 hours, it is standby；Isopropanol is poured into beaker, titanate coupling agent is subsequently adding, stirred, obtain mixed solution；
Step 1.3, the mixed solution of step 1.2 is uniformly sprayed on waste paper block using watering can, is placed in high-speed mixer
In be sufficiently mixed, take out waste paper, reaction 2 hours are stood at room temperature, be then placed in vacuum drying chamber drying 2 at 80 DEG C small
When, obtain pre- modified waste paper；
Step 1.4, the pre- modified waste paper for being obtained step 1.3 using pulverizer are crushed, and obtain final product modified secondary stock；Control
Secondary stock average length is about 0.7-1.0cm；
Step 2, weighed according to parts by weight：60 parts of pre- modified secondary stocks, 37 parts of waste polyethylene particles, 2.5 parts of Malaysias
Anhydride grafted lldpe, 0.5 part of PE wax；
Polyethylene, maleated polyethylene and PE waxes in step 3, the material for weighing step 2 and 40 parts it is pre- modified
Secondary stock is sufficiently mixed in being put into high mixer, and mixing temperature is 80 DEG C；By mixed material in the way of uniform charging from
Main spout is added in double screw extruder, while use additional feeding machine to add remaining 20 parts with uniform feed way changing in advance
Property secondary stock.Each area's temperature of extruder is set as 170 DEG C -180 DEG C, 185 DEG C of head temperature, and extruder speed is set as
250r/min.Extrusion particle is suppressed with pattern, 185 DEG C of press temperature, press time 15min, cooling, the demoulding is obtained this
Invention composite sample D.
Embodiment 5
Step 1, waste paper is pre-processed, optimize secondary stock form：
Step 1.1,55 parts of waste paper are weighed according to parts by weight, 2.5 parts of KH550 silane couplers, 30 parts of absolute ethyl alcohols；
Step 1.2, the fritter that the waste paper that step 1.1 is weighed is cut into 2cm × 2cm, 80 DEG C of bakings in vacuum drying chamber
It is dry 4 hours, it is standby；Absolute ethyl alcohol is poured into beaker, KH550 is subsequently adding, stirred, obtain mixed solution；
Step 1.3, the mixed solution of step 1.2 is uniformly sprayed on waste paper block using watering can, is placed in high-speed mixer
In be sufficiently mixed, take out waste paper, reaction 2 hours are stood at room temperature, be then placed in vacuum drying chamber drying 2 at 80 DEG C small
When, obtain pre- modified waste paper；
Step 1.4, the pre- modified waste paper for being obtained step 1.3 using pulverizer are crushed, and obtain final product modified secondary stock；Control
Secondary stock average length is about 0.7-1.0cm；
Step 2, weighed according to parts by weight：55 parts of pre- modified secondary stocks, 43 parts of waste polyethylene particles, 2 parts of maleic acids
Acid anhydride grafted polyethylene, 0.5 part of PE wax；
Polyethylene, maleated polyethylene and PE waxes in step 3, the material for weighing step 2 and 40 parts it is pre- modified
Secondary stock is sufficiently mixed in being put into high mixer, and mixing temperature is 80 DEG C；By mixed material in the way of uniform charging from
Main spout is added in double screw extruder, while use additional feeding machine to add remaining 15 parts with uniform feed way changing in advance
Property secondary stock.Each area's temperature of extruder is set as 170 DEG C -180 DEG C, 185 DEG C of head temperature, and extruder speed is set as
250r/min.Extrusion particle is suppressed with pattern, 185 DEG C of press temperature, press time 15min, cooling, the demoulding is obtained this
Invention composite sample E.
Embodiment 6
Step 1, waste paper is pre-processed, optimize secondary stock form：
Step 1.1,55 parts of waste paper are weighed according to parts by weight, 2.5 parts of KH550 silane couplers, 30 parts of absolute ethyl alcohols；
Step 1.2, the fritter that the waste paper that step 1.1 is weighed is cut into 2cm × 2cm, 80 DEG C of bakings in vacuum drying chamber
It is dry 4 hours, it is standby；Absolute ethyl alcohol is poured into beaker, KH550 is subsequently adding, stirred, obtain mixed solution；
Step 1.3, the mixed solution of step 1.2 is uniformly sprayed on waste paper block using watering can, is placed in high-speed mixer
In be sufficiently mixed, take out waste paper, reaction 2 hours are stood at room temperature, be then placed in vacuum drying chamber drying 2 at 80 DEG C small
When, obtain pre- modified waste paper；
Step 1.4, the pre- modified waste paper for being obtained step 1.3 using pulverizer are crushed, and obtain final product modified secondary stock；Control
Secondary stock average length is about 0.7-1.0cm；
Step 2, weighed according to parts by weight：55 parts of pre- modified secondary stocks, 41 parts of waste polyethylene particles, 3.5 parts of Malaysias
Anhydride grafted lldpe, 0.5 part of PE wax；
Polyethylene, maleated polyethylene and PE waxes in step 3, the material for weighing step 2 and 45 parts it is pre- modified
Secondary stock is sufficiently mixed in being put into high mixer, and mixing temperature is 80 DEG C；By mixed material in the way of uniform charging from
Main spout is added in double screw extruder, while use additional feeding machine to add remaining 20 parts with uniform feed way changing in advance
Property secondary stock.Each area's temperature of extruder is set as 170 DEG C -180 DEG C, 185 DEG C of head temperature, and extruder speed is set as
250r/min.Extrusion particle is suppressed with pattern, 185 DEG C of press temperature, press time 15min, cooling, the demoulding is obtained this
Invention composite sample F.
Composite prepared by embodiment 1-6 performance comparison is carried out into existing protophyte fibrous composite, has been had
Body Experimental comparison situation such as table 1 below：
Composite and the performance comparison result of protophyte fibrous composite prepared by the embodiment 1-6 of table 1
As can be seen from Table 1, the obtained high content secondary stock enhancing waste polyethylene composite of the present invention has good
Processability, water imbibition is low, good mechanical performance, is capable of achieving 100% reclaiming and produces.
In composite shaping, secondary stock form is to composite machinery mechanical property, interface performance and water suction
Performance etc. has particularly important influence, in the inventive method, when being crushed to waste paper, using the modified secondary fibre of pulverizer control
Dimension length prepares the secondary stock of form optimization in 0.7-1.0cm.When modified secondary stock is prepared, silane coupler and titanium
Acid esters coupling agent can occur chemical crosslinking effect with secondary stock, reduce the polarity on secondary stock surface, improve secondary stock
With the interface bond strength of matrix.When extruder is granulated, because secondary stock density is smaller, volume is relatively large, if adopted
With traditional feeding method, it is difficult to ensure that during high content, secondary stock scattered uniformity in the base, so, present invention side
Method adds modified secondary stock in matrix at twice, and a part uses additional feeding machine from the addition of main spout, another part
Added with uniform feed way, so as to solve the shortcoming that the small feeding of secondary stock density floats；Meanwhile, added in extruding pelletization
The maleated polyethylene of suitable amounts further improves the interface performance of composite, and the appropriate PE waxes of addition can be lifted compound
The processing characteristics of material.
The present invention prepares modified secondary stock using waste paper, optimizes fibre morphology and further developed suitable extrusion work
Skill, wastepaper as raw material need not carry out deinking treatment, be capable of achieving tall and big more than 50% secondary stock addition.The composite of preparation
Excellent in mechanical performance, water absorption rate is extremely low, integrated application function admirable, can be widely applied to construction material, ornament materials, wood for furniture
The fields such as material, and the material can realize 100% recycling, be entirely free of formaldehyde, be that a kind of utilization discards printing packaging material
Expect the high added value environment-friendly composite material for preparing.
Claims (6)
1. a kind of high content secondary stock strengthens the preparation method of waste polyethylene composite, it is characterised in that specifically include with
Lower step：
Step 1, waste paper is pre-processed, optimize secondary stock form, obtain modified secondary stock；
Step 2, weighed according to parts by weight：50-60 parts of pre- modified secondary stock, 37-48 parts of waste polyethylene, and 2-3.5 parts
Interfacial compatibilizer；0.5 part of PE wax；
Step 3, polyethylene, interfacial compatibilizer, PE waxes and the modified secondary stock of a part are mixed at 70-90 DEG C after with uniform
The mode of charging is added in double screw extruder from main spout, while it is surplus to use additional feeding machine to be added with uniform feed way
Remaining modified secondary stock, extrusion particle is suppressed with pattern, and cooling, the demoulding obtains final product composite of the present invention.
2. high content secondary stock according to claim 1 strengthens the preparation method of waste polyethylene composite, its feature
It is that the specific implementation step of step 1 is：
Step 1.1,50-60 parts of waste paper is weighed according to parts by weight, 1-3.5 parts of coupling agent, 10-30 parts of alcohols solvent；
Step 1.2, the fritter that waste paper is cut into 2cm × 2cm, 4h is dried for 80 DEG C in vacuum drying chamber, standby；By coupling agent
It is well mixed with alcohols solvent；
Step 1.3, by coupling agent and alcohols solvent it is well mixed after be uniformly sprayed on waste paper block, be placed in high-speed mixer and fill
Point mixing, takes out waste paper, and reaction 1-2h is stood at room temperature, is then placed in vacuum drying chamber being dried 2 hours at 80 DEG C, obtains
Pre- modified waste paper；
Step 1.4, the pre- modified waste paper for being obtained step 1.3 using pulverizer are crushed, and obtain final product modified secondary stock；Control is secondary
Average fiber length is about 0.7-1.0cm.
3. high content secondary stock according to claim 2 strengthens the preparation method of waste polyethylene composite, its feature
It is that the coupling agent is KH550 silane couplers or titanate coupling agent.
4. high content secondary stock according to claim 1 strengthens the preparation method of waste polyethylene composite, its feature
It is that the alcohols solvent is absolute ethyl alcohol or isopropanol.
5. high content secondary stock according to claim 1 strengthens the preparation method of waste polyethylene composite, its feature
It is that step 2 median surface compatilizer is maleic anhydride grafted polyethylene.
6. high content secondary stock according to claim 1 strengthens the preparation method of waste polyethylene composite, its feature
It is that each area's temperature of double screw extruder is set as 170 DEG C -180 DEG C, 180-190 DEG C of head temperature, extruder speed in step 3
Degree is set as 200-300r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611140955.2A CN106751991A (en) | 2016-12-12 | 2016-12-12 | High content secondary stock strengthens the preparation method of waste polyethylene composite |
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| CN107459694A (en) * | 2017-08-25 | 2017-12-12 | 西安理工大学 | The method that composite is prepared using useless boxboard, corrugated paper and regenerated plastics |
| CN109294034A (en) * | 2018-09-25 | 2019-02-01 | 西安理工大学 | The method for preparing composite material using useless bank-note paper, concerning security matters waste paper and waste plastics |
| CN111978668A (en) * | 2020-08-27 | 2020-11-24 | 东莞铭丰生物质科技有限公司 | Waste paper reinforced waste polyolefin plastic tray and preparation method thereof |
| CN114133645A (en) * | 2021-12-07 | 2022-03-04 | 西安理工大学 | Waste polyester fiber/waste polyethylene composite material and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107459694A (en) * | 2017-08-25 | 2017-12-12 | 西安理工大学 | The method that composite is prepared using useless boxboard, corrugated paper and regenerated plastics |
| CN109294034A (en) * | 2018-09-25 | 2019-02-01 | 西安理工大学 | The method for preparing composite material using useless bank-note paper, concerning security matters waste paper and waste plastics |
| CN111978668A (en) * | 2020-08-27 | 2020-11-24 | 东莞铭丰生物质科技有限公司 | Waste paper reinforced waste polyolefin plastic tray and preparation method thereof |
| CN114133645A (en) * | 2021-12-07 | 2022-03-04 | 西安理工大学 | Waste polyester fiber/waste polyethylene composite material and preparation method thereof |
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