CN107383744B - Polypropylene modified material for waste household appliances and preparation method thereof - Google Patents

Polypropylene modified material for waste household appliances and preparation method thereof Download PDF

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CN107383744B
CN107383744B CN201710532227.4A CN201710532227A CN107383744B CN 107383744 B CN107383744 B CN 107383744B CN 201710532227 A CN201710532227 A CN 201710532227A CN 107383744 B CN107383744 B CN 107383744B
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waste
polypropylene
modified material
parts
household appliances
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CN107383744A (en
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李迎春
贾帅
杜拴丽
曹诺
王文生
符永高
李洁
贺茂勇
霍志伟
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SHANGHAI GER NEW MATERIAL SCIENCE & TECHNOLOGY Co.,Ltd.
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North University of China
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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
    • C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
    • C08L51/06—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F255/00—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00
    • C08F255/02—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00 on to polymers of olefins having two or three carbon atoms
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/13—Phenols; Phenolates
    • C08K5/134—Phenols containing ester groups
    • C08K5/1345—Carboxylic esters of phenolcarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
    • C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
    • C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/20—Applications use in electrical or conductive gadgets
    • 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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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention belongs to the field of high polymer materials, and particularly relates to a polypropylene modified material for waste household appliances and a preparation method thereof. The modified material is prepared by melt blending of materials in parts by weight, wherein the materials are waste polypropylene grafts, phenolic resin and an antioxidant 1010; wherein the waste polypropylene graft is prepared by melting and blending waste household-appliance polypropylene, organic peroxide, epoxy functional monomer and styrene; the mass of each raw material of the waste polypropylene graft is not 0. The polypropylene modified material for the waste household appliances has good mechanical properties, and experiments show that the tensile strength of the polypropylene modified material for the waste household appliances is higher than 22MPa, and the notch impact strength of the polypropylene modified material for the waste household appliances is higher than 4kJ/m2The melt mass flow rate is lower than 12g/10 min.

Description

Polypropylene modified material for waste household appliances and preparation method thereof
Technical Field
The invention belongs to the field of high polymer materials, and particularly relates to a polypropylene (rPP) modified material for waste household appliances and a preparation method thereof.
Background
With the increasing progress of science and technology, plastics are widely applied to electronic and electric products (see table 1); and due to the innovation of technology and industry, the development and the update of the electronic product industry and the market are accelerated. Meanwhile, a large amount of electronic and electric garbage is generated, and the disposal of the discarded electronic and electric garbage and the harm to the environment become considerable problems.
TABLE 1 proportion of household electrical appliances materials
Figure BDA0001339581460000011
Aiming at the problem of waste plastic treatment, the extensive landfill and waste plastic incineration not only can cause secondary pollution to the environment, but also the treatment mode is not in line with the current green environmental development concept. Therefore, the recycling of the waste plastics can save resources and reduce cost on one hand; on the other hand, the environmental quality can be improved to a certain extent. However, the plastics in the household appliances are subjected to the action of light, heat and oxygen in the using process, so that the plastics for the household appliances are degraded to different degrees, the mechanical property is seriously reduced, and the plastics are difficult to directly recycle.
Disclosure of Invention
The invention relates to a polypropylene modified material for waste household appliances, which is prepared by melting, blending and modifying to realize the green high-valued recycling of polypropylene for waste household appliances. The method is characterized in that the waste polypropylene is used together with epoxy monomers and styrene, a graft is prepared under the action of organic peroxide, and then the graft and phenolic resin are melted and blended, so that the aim of repairing the molecular chain of the waste polypropylene is fulfilled, and the mechanical property of the waste polypropylene is finally improved.
The invention is realized by the following technical scheme: a polypropylene modified material for waste household appliances is prepared by melt blending of materials in parts by weight: 100 parts of waste polypropylene graft, 0-5 parts of phenolic resin but not 0 (not containing 0, namely not containing), 10100-2 parts of antioxidant;
wherein the waste polypropylene graft is prepared by mixing the following components in a mass ratio of 100: 0-2: 0-10: 0-10 parts of polypropylene, organic peroxide, epoxy functional monomer and styrene for waste household appliances are prepared by melt blending; the mass of each raw material of the waste polypropylene graft is not 0 (0 is not contained, namely the raw material cannot be contained).
The mass ratio of the polypropylene for the waste household appliances, the organic peroxide, the epoxy functional monomer and the styrene in the waste polypropylene graft is 100: 0-2: 0-10: 0 to 10. When the waste household electrical appliance polypropylene is 100 parts, if the organic peroxide is more than 2 parts, the polypropylene can be seriously degraded to cause the reduction of various performances of the machine body, which is not beneficial to the next modification research of the polypropylene; if the epoxy functional monomer is more than 10 parts, the excessive epoxy functional monomer is subjected to self-polymerization in the grafting process, so that the grafting rate is not improved; if the styrene content is more than 10 parts, part of the redundant styrene is subjected to self-polymerization in the grafting process, and the other part of the redundant styrene is subjected to copolymerization with the epoxy functional monomer, so that the grafting rate of the waste polypropylene is seriously influenced.
The mass ratio of the waste polypropylene graft to the phenolic resin to the antioxidant 1010 in the polypropylene modified material for the waste household appliances is 100: 0-5: 0-2, when the waste polypropylene graft is 100 parts, if the phenolic resin is more than 5 parts, excessive crosslinking is formed on the waste polypropylene graft due to reaction between hydroxyl and epoxy groups in the blending process, which is not beneficial to performance improvement and material processing; if the antioxidant 1010 is more than 2 parts, blooming phenomenon on the surface of the material can be caused.
As a further improvement of the technical scheme of the invention, the epoxy functional monomer is glycidyl methacrylate.
As a further improvement of the technical scheme of the invention, the organic peroxide is peroxide diisopropylbenzene, di (tert-butyl peroxyisopropyl) benzene or dibenzoyl peroxide.
As a further improvement of the technical scheme of the invention, the phenolic resin is phenolic resin with a linear structure.
Specifically, the phenolic resin with the linear structure is phenolic resin HY-2045 with the polymerization degree n of 6-8 or phenolic resin 2402 with the polymerization degree n of 1-3.
The structural formula of the phenolic resin HY-2045 is as follows:
Figure BDA0001339581460000021
the structural formula of the phenolic resin 2402 is as follows:
Figure BDA0001339581460000022
in order to more clearly illustrate the technical scheme of the invention, the invention further provides a preparation method of the polypropylene modified material for the waste household appliances, which adopts any one of the materials of the polypropylene modified material for the waste household appliances, and the preparation method comprises the following steps:
① 100 preparing a waste polypropylene graft by melt blending grafting of 100 parts by weight of waste household appliance polypropylene, 0-2 parts by weight of organic peroxide, 0-10 parts by weight of epoxy functional monomer and 0-10 parts by weight of styrene;
② 100 melting and blending 100 parts by weight of waste polypropylene graft, 0-5 parts by weight of phenolic resin and 0-2 parts by weight of antioxidant 1010 to obtain a melt of the waste polypropylene modified material, and cooling, granulating, drying and injection molding the melt to obtain the waste polypropylene modified material.
Preferably, the melt blending temperature in the step ① is 180-210 ℃, and the melt temperature in the step ② is 180-220 ℃.
Preferably, the polypropylene for the waste household appliances and the waste polypropylene graft are dried in vacuum before being melted.
Compared with the prior art, the invention provides a polypropylene (rPP) modified material for waste household appliances and a preparation method thereof, the provided polypropylene modified material for waste household appliances has good mechanical properties, and experiments show that the tensile strength of the polypropylene modified material for waste household appliances is higher than 22MPa, and the notch impact strength of the polypropylene modified material for waste household appliances is higher than 4kJ/m2The melt mass flow rate is lower than 12g/10 min. The preparation method provided by the invention can provide the waste polypropylene modified material with good mechanical property, and solves the problems that the polypropylene material for the waste household appliances has poor mechanical property and is difficult to be recycled.
Test one: the invention discloses a performance research of a polypropylene modified material for waste household appliances
1.1 treatment step: crushing the polypropylene for the waste household appliances into powder with the particle size of 5-15 mm, then placing the polypropylene for the waste household appliances in a vacuum drying oven, and drying for 10 hours at the drying temperature of 100 ℃. And (2) mixing the following components in percentage by mass as 100: 0-2: 0-10: 0~10 abandonment polypropylene for household electrical appliances, organic peroxide, epoxy functional monomer, styrene mix the back, add into double screw extruder, set up the temperature of double screw extruder from charge door to aircraft nose each section: 185 ℃, 190 ℃, 195 ℃, 200 ℃, 205 ℃, 200 ℃, 190 ℃, 185 ℃ and the screw rotation speed is 82 r/min. Performing melt extrusion granulation on the materials to prepare a waste polypropylene graft, wherein the particle size of the waste polypropylene graft is 3-5 mm; and (3) placing the granules of the waste polypropylene graft in a vacuum drying oven, and drying for 10 hours at the drying temperature of 100 ℃. Mixing 100: 0-5: 0-2 of waste polypropylene graft, phenolic resin and antioxidant 1010, adding the mixture into a double-screw extruder, and setting the temperature of the double-screw extruder from a feed inlet to each section of a machine head: melting, extruding and granulating the materials at 180 ℃, 190 ℃, 200 ℃, 210 ℃, 215 ℃, 205 ℃, 195 ℃, 185 ℃ and 185 ℃ at the screw rotation speed of 82 r/min; placing the obtained granules of the waste polypropylene modified material in a vacuum drying oven, and drying for 10 hours at the drying temperature of 100 ℃; adding the dried granules into an injection molding machine, and setting the temperature of the injection molding machine from a feed inlet to each section of a machine head as follows: 190 deg.C, 210 deg.C, 200 deg.C. And after the injection molding is finished, obtaining the polypropylene modified material for the waste household appliances.
And (3) obtaining the polypropylene modified material for the waste household appliances according to the treatment steps, wherein the source of the polypropylene for the waste household appliances adopted by the modified material is the same as that of the polypropylene for the waste household appliances directly tested. The epoxy functional monomer is Glycidyl Methacrylate (GMA), the organic peroxide is dicumyl peroxide, and the phenolic resin is phenolic resin HY-2045 with the polymerization degree n of 6-8.
1.2 test methods: testing the notch impact strength according to a standard detection method GB 1843-2008; the tensile strength is tested according to a standard detection method GB/T1040-2006; melt flow rate was tested according to standard test method ASTM D1238.
1.3 the test results are shown in Table 2.
TABLE 2 comparison of the properties of the polypropylene modified material for waste household electrical appliances of the present invention and polypropylene for waste household electrical appliances
Figure BDA0001339581460000031
In summary, it can be seen that: for the performance improvement and improvement of the polypropylene modified material for the waste household appliances, the lack of any one of the raw materials in the table 2 can cause the performance of the final material to be not up to the standard.
And (2) test II: research on material selection of polypropylene modified material for waste household appliances
1.1 treatment step: in order to better embody the favorable promotion and improvement effects of the raw materials on the performance of the modified material, the inventor conducts tests on different raw materials, and the specific tests are as follows. And the only variable in table 3 is the substitution between the starting materials, other starting materials, ratios and preparation conditions were the same as in example 1.
1.2 test methods: testing the notch impact strength according to a standard detection method GB 1843-2008; the tensile strength is tested according to a standard detection method GB/T1040-2006; melt flow rate was tested according to standard test method ASTM D1238.
1.3 the test results are shown in Table 3.
TABLE 3 comparison of Properties of Polypropylene modified Material for waste household appliances prepared from different raw materials
Figure BDA0001339581460000032
In summary, it can be seen that: the polypropylene modified material for the waste household appliances prepared by adopting different raw materials has different limits on the improvement and the promotion of the performance of the final material, and even leads to the reduction of the final performance of the material. Therefore, the properties of the polypropylene modified materials for household electrical appliances obtained from different raw materials in Table 3 do not meet the standard of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a polypropylene modified material for waste household appliances, which is prepared by melt blending of materials in parts by weight: 100 parts of waste polypropylene graft, 0-5 parts of phenolic resin but not 0 part of phenolic resin, and 10100-2 parts of antioxidant;
wherein the waste polypropylene graft is prepared by mixing the following components in a mass ratio of 100: 0-2: 0-10: 0-10 parts of polypropylene, organic peroxide, epoxy functional monomer and styrene for waste household appliances are prepared by melt blending; the mass of each raw material of the waste polypropylene graft is not 0.
The notch impact strength of the polypropylene for the waste household appliances in the waste polypropylene modified material provided by the invention is lower than 4kJ/m2。
In one embodiment of the invention, the polypropylene for the waste household appliances has the notch impact strength lower than 4kJ/m2(ii) a In another embodiment of the present invention, the polypropylene for waste household electrical appliances has a notched impact strength of 2.16kJ/m or less2。
In one embodiment of the present invention, the tensile strength of the polypropylene for waste household electrical appliances is less than 22 MPa; in another embodiment of the present invention, the polypropylene for waste home appliances has a tensile strength of 19.4MPa or less.
In one embodiment provided by the invention, the melt flow rate of the polypropylene for the waste household appliances is more than 12g/10 min; in another embodiment of the present invention, the melt flow rate of the polypropylene for waste household electrical appliances is greater than or equal to 14.6g/10 min.
In the invention, the epoxy functional monomer is a bifunctional epoxy functional monomer. Among them, the epoxy functional monomer is preferably Glycidyl Methacrylate (GMA).
In the invention, the organic peroxide (initiator) is dicumyl peroxide, di (tert-butyl isopropyl peroxide) and dibenzoyl peroxide. Wherein, under the condition of 180 ℃, the half-life periods of dicumyl peroxide, di (tert-butyl isopropyl peroxide) and dibenzoyl peroxide are respectively 29s, 33s and 1.2 s; the half-life periods of the three are 5.2s, 6.0s and 0.3s respectively at 200 ℃. The organic peroxide is preferably dicumyl peroxide and di (t-butylperoxyisopropyl), more preferably dicumyl peroxide, in terms of the half-life of the initiator.
Specifically, the phenolic resin with the linear structure is phenolic resin HY-2045 with the polymerization degree n of 6-8 or phenolic resin 2402 with the polymerization degree n of 1-3. The phenolic resin HY-2045 with the polymerization degree n of 6-8 and the phenolic resin with the polymerization degree n of 1-3 adopted by the invention are provided by Shanxi chemical research institute.
The invention also provides a preparation method of the polypropylene modified material for the waste household appliances, which adopts any one of the materials of the polypropylene modified material for the waste household appliances, and the preparation method comprises the following steps:
① 100 preparing a waste polypropylene graft through melt grafting by using 100 parts by weight of waste household appliance polypropylene, 0-2 parts by weight of organic peroxide, 0-10 parts by weight of epoxy functional monomer and 0-10 parts by weight of styrene;
② 100 melting and blending 100 parts by weight of waste polypropylene graft, 0-5 parts by weight of phenolic resin and 0-2 parts by weight of antioxidant 1010 to obtain a melt of the waste polypropylene modified material, and cooling, granulating, drying and injection molding the melt to obtain the waste polypropylene modified material.
In the preparation process of the waste polypropylene graft, the waste household electrical appliance polypropylene, organic peroxide, epoxy functional monomer, styrene 100: 0-2: 0-10: 0-10, preferably 100: 0-0.5: 3 to 6:3 to 6, and more preferably 100:0.1 to 0.2:4 to 5.
The melt blending temperature of the waste polypropylene graft (step ①) is preferably 180-210 ℃, more preferably 185-205 ℃, the equipment for melt blending of the polypropylene, the organic peroxide, the epoxy functional monomer and the styrene for the household appliances is not particularly limited, and the equipment is preferably a double-screw extruder which is well known by the technical personnel in the field.
In the blending process (step ②) of the waste polypropylene graft, the phenolic resin and the antioxidant 1010, the mass ratio of the waste polypropylene graft, the phenolic resin and the antioxidant 1010 is 100: 0-5: 0-2, preferably 100: 3-5: 1-1.5, the melting temperature of the prepared modified waste polypropylene material is preferably 180-220 ℃, more preferably 180-215 ℃, wherein the temperatures of all sections from a feed inlet to a machine head of the double-screw extruder are preferably 180 ℃, 190 ℃, 200 ℃, 210 ℃, 215 ℃, 205 ℃, 195 ℃, 185 ℃ and 185 ℃, and the rotating speed of the double-screw extruder is preferably 82 r/min.
In the invention, the waste polypropylene graft and the waste polypropylene graft for household appliances are preferably dried before the waste polypropylene graft and the waste polypropylene modified material are prepared. Preferably, the drying temperature is 60-110 ℃, and more preferably 90-100 ℃; the drying time is preferably 8-12 hours, and more preferably 8-10 hours. The equipment used for drying the waste polypropylene and the waste polypropylene graft in the present invention is not particularly limited, and is preferably an air-blowing drying oven well known to those skilled in the art, and more preferably a vacuum drying oven. In the invention, before the materials are blended, the polypropylene for the waste household appliances and the waste polypropylene graft are dried, so that the volatilization of moisture in the materials in the melt blending process can be effectively prevented, and the thermal degradation and hydrolysis caused by the volatilization of the moisture in the melt blending process of the raw materials can be avoided.
In the present invention, it is preferable that the polypropylene material for waste household appliances is pulverized before the polypropylene for waste household appliances is dried to obtain polypropylene granules for waste household appliances. The particle size of the crushed polypropylene granules for the waste household appliances is preferably 5-15 mm; preferably, before the waste polypropylene graft is dried, the waste polypropylene graft is extruded and granulated to obtain waste polypropylene graft granules. The particle size of the granulated waste polypropylene grafted granules is preferably 3-5 mm.
And melting and blending the waste polypropylene graft, phenolic resin and the antioxidant 1010 to obtain a melt of the waste polypropylene modified material, and cooling, granulating, drying and injection molding the melt to obtain the waste polypropylene modified material. The particle size is preferably 3-5 mm; the drying temperature is preferably 80-110 ℃, and more preferably 90-100 ℃; the drying time is preferably 8-12 h, and more preferably 8-10 h; the drying equipment is preferably a vacuum drying oven; the injection molding temperature is preferably 190-210 ℃; the injection molding apparatus is preferably an injection molding machine. In the invention, the temperatures of all sections from the feed inlet to the machine head are respectively preferably 190 ℃, 210 ℃ and 200 ℃ in the operation process of the injection molding machine.
The preparation method provided by the invention can provide the waste polypropylene modified material with good mechanical property, and solves the problems that the polypropylene material for the waste household appliances has poor mechanical property and is difficult to be recycled.
For clarity, the following examples are provided for illustrative purposes.
Example 1
Crushing the polypropylene for the waste household appliances into powder with the particle size of 5-15 mm, then placing the polypropylene for the waste household appliances in a vacuum drying oven, and drying for 10 hours at the drying temperature of 100 ℃. 100g of waste polypropylene for household appliances, 0.1g of dicumyl peroxide, 4.5g of styrene and 4.5g of glycidyl methacrylate are mixed and added into a double-screw extruder, and the temperature of the double-screw extruder from a feed inlet to each section of a machine head is set as follows: 185 ℃, 190 ℃, 195 ℃, 200 ℃, 205 ℃, 200 ℃, 190 ℃, 185 ℃ and the screw rotation speed is 82 r/min. Performing melt extrusion granulation on the materials to prepare a waste polypropylene graft, wherein the particle size of the waste polypropylene graft is 3-5 mm; and (3) placing the granules of the waste polypropylene graft in a vacuum drying oven, and drying for 10 hours at the drying temperature of 100 ℃. Mixing 100g of waste polypropylene graft, 1g of phenolic resin HY-2045 and 1g of antioxidant 1010, adding the mixture into a double-screw extruder, and setting the temperature of the double-screw extruder from a feed inlet to each section of a machine head: melting, extruding and granulating the materials at 180 ℃, 190 ℃, 200 ℃, 210 ℃, 215 ℃, 205 ℃, 195 ℃, 185 ℃ and 185 ℃ at the screw rotation speed of 82 r/min; placing the obtained granules of the waste polypropylene modified material in a vacuum drying oven, and drying for 10 hours at the drying temperature of 100 ℃; adding the dried granules into an injection molding machine, and setting the temperature of the injection molding machine from a feed inlet to each section of a machine head as follows: 190 deg.C, 210 deg.C, 200 deg.C. And after the injection molding is finished, obtaining the polypropylene modified material for the waste household appliances.
In this embodiment, the polypropylene material for the waste household electrical appliances is mainly prepared from a waste polypropylene reclaimed material obtained by disassembling a waste television shell, and the notch impact strength of the waste polypropylene reclaimed material is 1.60kJ/m2The tensile strength was 18.7MPa, and the melt flow rate was 15.32g/10 min.
Example 2
Crushing the polypropylene for the waste household appliances into powder with the particle size of 5-15 mm, then placing the polypropylene for the waste household appliances in a vacuum drying oven, and drying for 10 hours at the drying temperature of 100 ℃. 100g of waste polypropylene for household appliances, 0.2g of dicumyl peroxide, 6g of styrene and 6g of glycidyl methacrylate are mixed and added into a double-screw extruder, and the temperature of the double-screw extruder from a feed inlet to each section of a machine head is set as follows: 185 ℃, 190 ℃, 195 ℃, 200 ℃, 205 ℃, 200 ℃, 190 ℃, 185 ℃ and the screw rotation speed is 82 r/min. Performing melt extrusion granulation on the materials to prepare a waste polypropylene graft, wherein the particle size of the waste polypropylene graft is 3-5 mm; and (3) placing the granules of the waste polypropylene graft in a vacuum drying oven, and drying for 10 hours at the drying temperature of 100 ℃. Mixing 100g of waste polypropylene graft, 1g of phenolic resin HY-2045 and 1g of antioxidant 1010, adding the mixture into a double-screw extruder, and setting the temperature of the double-screw extruder from a feed inlet to each section of a machine head: melting, extruding and granulating the materials at 180 ℃, 190 ℃, 200 ℃, 210 ℃, 215 ℃, 205 ℃, 195 ℃, 185 ℃ and 185 ℃ at the screw rotation speed of 82 r/min; placing the obtained granules of the waste polypropylene modified material in a vacuum drying oven, and drying for 10 hours at the drying temperature of 100 ℃; adding the dried granules into an injection molding machine, and setting the temperature of the injection molding machine from a feed inlet to each section of a machine head as follows: 190 deg.C, 210 deg.C, 200 deg.C. And after the injection molding is finished, obtaining the polypropylene modified material for the waste household appliances.
In this example, the same polypropylene for waste household electrical appliances as in example 1 was used.
Example 3
Crushing the polypropylene for the waste household appliances into powder with the particle size of 5-15 mm, then placing the polypropylene for the waste household appliances in a vacuum drying oven, and drying for 10 hours at the drying temperature of 100 ℃. 100g of waste polypropylene for household appliances, 0.2g of dicumyl peroxide, 6g of styrene and 6g of glycidyl methacrylate are mixed and added into a double-screw extruder, and the temperature of the double-screw extruder from a feed inlet to each section of a machine head is set as follows: 185 ℃, 190 ℃, 195 ℃, 200 ℃, 205 ℃, 200 ℃, 190 ℃, 185 ℃ and the screw rotation speed is 82 r/min. Performing melt extrusion granulation on the materials to prepare a waste polypropylene graft, wherein the particle size of the waste polypropylene graft is 3-5 mm; and (3) placing the granules of the waste polypropylene graft in a vacuum drying oven, and drying for 10 hours at the drying temperature of 100 ℃. Mixing 100g of waste polypropylene graft, 2.5g of phenolic resin HY-2045 and 1g of antioxidant 1010, adding the mixture into a double-screw extruder, and setting the temperature of the double-screw extruder from a feed inlet to each section of a machine head: melting, extruding and granulating the materials at 180 ℃, 190 ℃, 200 ℃, 210 ℃, 215 ℃, 205 ℃, 195 ℃, 185 ℃ and 185 ℃ at the screw rotation speed of 82 r/min; placing the obtained granules of the waste polypropylene modified material in a vacuum drying oven, and drying for 10 hours at the drying temperature of 100 ℃; adding the dried granules into an injection molding machine, and setting the temperature of the injection molding machine from a feed inlet to each section of a machine head as follows: 190 deg.C, 210 deg.C, 200 deg.C. And after the injection molding is finished, obtaining the polypropylene modified material for the waste household appliances.
In this example, the same polypropylene for waste household electrical appliances as in example 1 was used.
Example 4
Crushing the polypropylene for the waste household appliances into powder with the particle size of 5-15 mm, then placing the polypropylene for the waste household appliances in a vacuum drying oven, and drying for 10 hours at the drying temperature of 100 ℃. 100g of waste polypropylene for household appliances, 0.2g of dicumyl peroxide, 6g of styrene and 6g of glycidyl methacrylate are mixed and added into a double-screw extruder, and the temperature of the double-screw extruder from a feed inlet to each section of a machine head is set as follows: 185 ℃, 190 ℃, 195 ℃, 200 ℃, 205 ℃, 200 ℃, 190 ℃, 185 ℃ and the screw rotation speed is 82 r/min. Performing melt extrusion granulation on the materials to prepare a waste polypropylene graft, wherein the particle size of the waste polypropylene graft is 3-5 mm; and (3) placing the granules of the waste polypropylene graft in a vacuum drying oven, and drying for 10 hours at the drying temperature of 100 ℃. Mixing 100g of waste polypropylene graft, 4g of phenolic resin HY-2045 and 1g of antioxidant 1010, adding the mixture into a double-screw extruder, and setting the temperature of the double-screw extruder from a feed inlet to each section of a machine head: melting, extruding and granulating the materials at 180 ℃, 190 ℃, 200 ℃, 210 ℃, 215 ℃, 205 ℃, 195 ℃, 185 ℃ and 185 ℃ at the screw rotation speed of 82 r/min; placing the obtained granules of the waste polypropylene modified material in a vacuum drying oven, and drying for 10 hours at the drying temperature of 100 ℃; adding the dried granules into an injection molding machine, and setting the temperature of the injection molding machine from a feed inlet to each section of a machine head as follows: 190 deg.C, 210 deg.C, 200 deg.C. And after the injection molding is finished, obtaining the polypropylene modified material for the waste household appliances.
In this example, the same polypropylene for waste household electrical appliances as in example 1 was used.
Example 5
Crushing the polypropylene for the waste household appliances into powder with the particle size of 5-15 mm, then placing the polypropylene for the waste household appliances in a vacuum drying oven, and drying for 10 hours at the drying temperature of 100 ℃. 100g of waste polypropylene for household appliances, 0.5g of dicumyl peroxide, 3g of styrene and 3g of glycidyl methacrylate are mixed and added into a double-screw extruder, and the temperature of the double-screw extruder from a feed inlet to each section of a machine head is set as follows: 185 ℃, 190 ℃, 195 ℃, 200 ℃, 205 ℃, 200 ℃, 190 ℃, 185 ℃ and the screw rotation speed is 82 r/min. Performing melt extrusion granulation on the materials to prepare a waste polypropylene graft, wherein the particle size of the waste polypropylene graft is 3-5 mm; and (3) placing the granules of the waste polypropylene graft in a vacuum drying oven, and drying for 10 hours at the drying temperature of 100 ℃. Mixing 100g of waste polypropylene graft, 3g of phenolic resin HY-2045 with the polymerization degree n of 6-8 and 1.5g of antioxidant 1010, adding the mixture into a double-screw extruder, and setting the temperature of the double-screw extruder from a feed inlet to each section of a machine head: melting, extruding and granulating the materials at 180 ℃, 190 ℃, 200 ℃, 210 ℃, 215 ℃, 205 ℃, 195 ℃, 185 ℃ and 185 ℃ at the screw rotation speed of 82 r/min; placing the obtained granules of the waste polypropylene modified material in a vacuum drying oven, and drying for 10 hours at the drying temperature of 100 ℃; adding the dried granules into an injection molding machine, and setting the temperature of the injection molding machine from a feed inlet to each section of a machine head as follows: 190 deg.C, 210 deg.C, 200 deg.C. And after the injection molding is finished, obtaining the polypropylene modified material for the waste household appliances.
In this example, the same polypropylene for waste household electrical appliances as in example 1 was used.
Example 6
Crushing the polypropylene for the waste household appliances into powder with the particle size of 5-15 mm, then placing the polypropylene for the waste household appliances in a vacuum drying oven, and drying for 10 hours at the drying temperature of 100 ℃. 100g of waste polypropylene for household appliances, 2g of dicumyl peroxide, 10g of styrene and 10g of glycidyl methacrylate are mixed and added into a double-screw extruder, and the temperature of the double-screw extruder from a feed inlet to each section of a machine head is set as follows: 185 ℃, 190 ℃, 195 ℃, 200 ℃, 205 ℃, 200 ℃, 190 ℃, 185 ℃ and the screw rotation speed is 82 r/min. Performing melt extrusion granulation on the materials to prepare a waste polypropylene graft, wherein the particle size of the waste polypropylene graft is 3-5 mm; and (3) placing the granules of the waste polypropylene graft in a vacuum drying oven, and drying for 10 hours at the drying temperature of 100 ℃. Mixing 100g of waste polypropylene graft, 5g of phenolic resin 2402 with the polymerization degree n of 1-3 and 2g of antioxidant 1010, adding the mixture into a double-screw extruder, and setting the temperature of the double-screw extruder from a feed inlet to each section of a machine head: melting, extruding and granulating the materials at 180 ℃, 190 ℃, 200 ℃, 210 ℃, 215 ℃, 205 ℃, 195 ℃, 185 ℃ and 185 ℃ at the screw rotation speed of 82 r/min; placing the obtained granules of the waste polypropylene modified material in a vacuum drying oven, and drying for 10 hours at the drying temperature of 100 ℃; adding the dried granules into an injection molding machine, and setting the temperature of the injection molding machine from a feed inlet to each section of a machine head as follows: 190 deg.C, 210 deg.C, 200 deg.C. And after the injection molding is finished, obtaining the polypropylene modified material for the waste household appliances.
In this example, the same polypropylene for waste household electrical appliances as in example 1 was used.
The modified materials obtained in example 1, example 2, example 3 and example 4 and the virgin recycled polypropylene materials were tested for their notch impact strength, tensile strength and melt flow rate. Wherein, the notch impact strength is tested according to a standard detection method GB 1843-2008; the tensile strength is tested according to a standard detection method GB/T1040-2006; melt flow rate was tested according to standard test method ASTM D1238. The test results are shown in table 4.
TABLE 4 test results of waste polypropylene modified materials
Figure BDA0001339581460000071

Claims (6)

1. The polypropylene modified material for the waste household appliances is characterized by being prepared by melt blending of materials in parts by weight: 100 parts of waste polypropylene graft, 0-5 parts of phenolic resin but not 0 part, 10100-2 parts of antioxidant, wherein the phenolic resin is phenolic resin with a linear structure, and the phenolic resin with the linear structure is phenolic resin HY-2045 with the polymerization degree n of 6-8 or phenolic resin 2402 with the polymerization degree n of 1-3;
wherein the waste polypropylene graft is prepared by mixing the following components in a mass ratio of 100: 0-2: 0-10: 0-10 parts of polypropylene, organic peroxide, epoxy functional monomer and styrene for waste household appliances are prepared by melt blending; the mass of each raw material of the waste polypropylene graft is not 0.
2. The polypropylene modified material for waste household electrical appliances as claimed in claim 1, wherein the epoxy functional monomer is glycidyl methacrylate.
3. The polypropylene modified material for waste electric appliances as claimed in claim 1, wherein the organic peroxide is peroxide diisopropylbenzene, di (t-butylperoxyisopropyl) benzene or dibenzoyl peroxide.
4. A preparation method of polypropylene modified material for waste household electrical appliances is characterized in that the material of the polypropylene modified material for the waste household electrical appliances is adopted according to any one of claims 1 to 3, and the preparation method comprises the following steps:
① 100 preparing a waste polypropylene graft by melt blending grafting of 100 parts by weight of waste household appliance polypropylene, 0-2 parts by weight of organic peroxide, 0-10 parts by weight of epoxy functional monomer and 0-10 parts by weight of styrene;
② 100 melting and blending 100 parts by weight of waste polypropylene graft, 0-5 parts by weight of phenolic resin and 0-2 parts by weight of antioxidant 1010 to obtain a melt of the waste polypropylene modified material, and cooling, granulating, drying and injection molding the melt to obtain the waste polypropylene modified material.
5. The method for preparing the polypropylene modified material for waste household electrical appliances as claimed in claim 4, wherein the melt blending temperature in the step ① is 180-210 ℃, and the melt temperature in the step ② is 180-220 ℃.
6. The method for preparing the polypropylene modified material for waste household electrical appliances as claimed in claim 4, wherein the polypropylene for waste household electrical appliances and the waste polypropylene graft are dried in vacuum before being melted.
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CN108948631A (en) * 2018-05-24 2018-12-07 中北大学 Waste and old polypropylene long-branched material and preparation method thereof
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1651502A (en) * 2004-12-29 2005-08-10 刘明春 Recovery and shaping process of poly propylene phonol formaldehyde resin, polyurethane composite waste material
CN101935446A (en) * 2010-09-30 2011-01-05 株洲时代工程塑料制品有限责任公司 Polyester composition and preparation method thereof
CN104974404A (en) * 2015-07-22 2015-10-14 盐城工学院 Preparation method of wood-plastic composite material
CN106280261A (en) * 2016-08-25 2017-01-04 纽宝力精化(广州)有限公司 Composition epoxy resin with high tg values and preparation method thereof
CN106700228A (en) * 2015-11-15 2017-05-24 合肥杰事杰新材料股份有限公司 Modified polypropylene recycled material and preparation method thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI478812B (en) * 2011-12-22 2015-04-01 Tsrc Corp Elastic multi-layer films and elastic article thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1651502A (en) * 2004-12-29 2005-08-10 刘明春 Recovery and shaping process of poly propylene phonol formaldehyde resin, polyurethane composite waste material
CN101935446A (en) * 2010-09-30 2011-01-05 株洲时代工程塑料制品有限责任公司 Polyester composition and preparation method thereof
CN104974404A (en) * 2015-07-22 2015-10-14 盐城工学院 Preparation method of wood-plastic composite material
CN106700228A (en) * 2015-11-15 2017-05-24 合肥杰事杰新材料股份有限公司 Modified polypropylene recycled material and preparation method thereof
CN106280261A (en) * 2016-08-25 2017-01-04 纽宝力精化(广州)有限公司 Composition epoxy resin with high tg values and preparation method thereof

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
Effect of long chain branching on the rheological behavior, crystallization and mechanical properties of polypropylene random copolymer;Jing Cao，等;《Chinese Journal of Polymer Science》;20161231;第34卷(第9期);第1158-1171页 *
动态固化聚丙烯/酚醛树脂共混物结构与性能的研究;崔丽梅;《万方数据知识服务平台》;20090430;正文第14页第1.5.2节，正文第30页表2-1，正文第31页第2.2.2节，正文第38页表2-4 *
聚烯烃接枝甲基丙烯酸缩水甘油酯（PO-g-GMA）的制备、结构表征及应用研究;郭可锐;《万方数据知识服务平台》;20141028;正文第80页第3.3.1节，正文第82-85页 *

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