CN108250569A - Polypropylene expanded plastic pellet and its sheet material preparation process - Google Patents
Polypropylene expanded plastic pellet and its sheet material preparation process Download PDFInfo
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- CN108250569A CN108250569A CN201711415591.9A CN201711415591A CN108250569A CN 108250569 A CN108250569 A CN 108250569A CN 201711415591 A CN201711415591 A CN 201711415591A CN 108250569 A CN108250569 A CN 108250569A
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- polypropylene
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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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/30—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by mixing gases into liquid compositions or plastisols, e.g. frothing with air
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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
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—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
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
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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
- 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
- C08J2423/08—Copolymers of ethene
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- 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
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- 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
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
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- 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
- C08K5/10—Esters; Ether-esters
-
- 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
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- 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
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/524—Esters of phosphorous acids, e.g. of H3PO3
- C08K5/526—Esters of phosphorous acids, e.g. of H3PO3 with hydroxyaryl compounds
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
In view of the deficiencies of the prior art, the present invention discloses polypropylene expanded plastic pellet and its sheet material preparation process, improves final product quality of the polypropylene expanded plastics as packaging material, while energy conservation and environmental protection in production process, reduces pollution as far as possible.In order to achieve the above object, the present invention is achieved by the following technical programs：Polypropylene expanded plastic pellet, it is composed of the following components：Polypropylene：100 parts；Pentaerythritol ester：0.5 part；Phosphite ester：0.5 part；Calcium stearate：0.5 part；One sodium of a aminoglutaric acids：1 part；Ethylene-butylene copolymer：58 parts；Sodium glutamate：0.01 0.1 parts；Antioxidant：0.1 0.5 parts.The technical solution of the present invention in this way, final products of the present invention are not only environmentally friendly, but also particle is fine and smooth, durable.
Description
Technical field
The present invention relates to technical field of chemical material preparation, and in particular to polypropylene expanded plastic pellet and its sheet material system
Standby technique.
Background technology
Foamed plastic has many advantages, such as light, heat-insulated, buffering, insulation, anti-corrosion, cheap, therefore in daily necessities, packet
Dress, industry, agricultural, transportation, war industry, aerospace industry are used widely, and China has been steeped since the 1990s
The development of foam plastics is very rapid.And wherein polypropylene becomes the outstanding person in foamed plastic with its good performance.Poly- third
Alkene foamed plastic adds in foaming agent and other additives is made usually based on acrylic resin.Its mechanical strength is preferable,
Have that excellent tensile strength, flexibility and elastic-friction coefficient are big, and wear-resisting property is good, help to prevent light in contact
The slip density on sliding surface is small, and thermal insulation is excellent；It is nontoxic, tasteless etc..
Also there are various polypropylene expanded plastics, such as the patent of invention of patent No. 201610238426.X in the prior art
《A kind of expanded polypropylene and preparation method thereof》In disclose a kind of expanded polypropylene, by weight score meter, including with the following group
Point：100 parts of acrylic resin, 10-30 parts of alpha-olefin low polymers, 0.01-10 parts of foaming agent, the inorganic filler 10- of surface modification
20 parts, 1-10 parts of auxiliary agent, the alpha-olefin low polymers are less than 10000 oligomer for number-average molecular weight, and the auxiliary agent includes anti-
Oxidant, foaming stabilizer.Raw material is added in batches with different time in preparation method, expanded polypropylene expansion ratio is high, power
Performance is good, and production method is simple, disclosure satisfy that lightweight requirements.
But polypropylene expanded plastics of the prior art polluted in preparation process it is more serious, and polypropylene send out
The larger stomata of foamed material is difficult that the high-grade of smooth exquisiteness is made to ensure material.The entire firmness of material is also limited.
Invention content
In view of the deficiencies of the prior art, the present invention discloses polypropylene expanded plastic pellet and its sheet material preparation process, improves
Final product quality of the polypropylene expanded plastics as packaging material, while energy conservation and environmental protection in production process, reduce dirt as far as possible
Dye.
In order to achieve the above object, the present invention is achieved by the following technical programs：
Polypropylene expanded plastic pellet, it is composed of the following components：
Polypropylene：100 parts；
Pentaerythritol ester：0.5 part；
Phosphite ester：0.5 part；
Calcium stearate：0.5 part；
One sodium of a- aminoglutaric acids：1 part；
Ethylene-butylene copolymer：5-8 parts；
Sodium glutamate：0.01-0.1 parts；
Antioxidant：0.1-0.5 parts.
Preferably, including affiliated step：Step 1：Antioxidant is put into processing container in advance, processing container is heated, this
Shi Jiagong vessel temps are no more than 100 degrees Celsius；
Step 2：By polypropylene, calcium stearate, ethylene-butylene copolymer premixing；
Step 3：The mixture that step 2 obtains is put into processing container and carries out processing early period, dries and removes moisture；At this time
It is 200 degrees Celsius to process temperature in container, and step 3 duration is 30 minutes；
Step 4：Remaining ingredient is added in into processing container, is mediated, it is Celsius for 200 to process temperature in container at this time
Degree, step 4 duration are 30 minutes；
Step 5：The raw material obtained in step 4 is added in into Single screw extrusion, is granulated；
Step 6：Dry, finally weighing, detection, packaging finish.
Preferably, antioxidant is used in the step 1 as antioxidant 1010 and the mixing antioxidant of irgasfos 168, wherein
Any component is not less than 10%.Irgasfos 168, that is, Irganox 168 is outstanding collaboration auxiliary antioxidant, as a kind of colourless
Dirty, solvay-type phosphorous acid esters processing stabilizers and antioxidant without discoloration are mainly used in epoxy, phenols, acrylic acid, gather
The tanks such as ester are listened, coiled material and powdery paints.Antioxidant 1010, that is, Irganox1010 is a kind of efficient, and the stabilizer of low color dirt belongs to
, can be compatible with most polymers in polynary hindered phenol type antioxidant, it can be used for a variety of organic compounds.With good
Photostability and anti-discoloration performance.It is widely used in：Plastics (PE, PP, PS, PVC), synthetic fibers, ABS resin, elastomer, stone
In the products such as wax, rubber, lubricating oil and lubricant.It can protect these materials to make it that thermal oxidative degradation not occur.1010 tools
There are good compatibility, highly resistance extraction and low volatility.The two is mutually mixed the anti-oxidant effect that can be played and more be directed to
Fruit.
Preferably, polypropylene material must be crushed before adding in powder.Particle is thin when just can guarantee later stage molding in this way
Greasy, bubble is sufficiently small.
Preferably, it is the step of the processing of single screw rod body in step 5：The vertically or longitudinally shape at single-screw machine melt zone
Into small-bore；Alloy gas rake thin is bumped into, some aerating apertures are harrowed in formation more；Screw machine latter end is equipped with speed reducer, speed reducer rear end
Face is equipped with air pressurized contracting machine to single screw rod gas pressurized；Gas enters screw machine melt zone, and alloy gas rake thin is in single screw rod
It is formed in melt zone groove multiple in fusiform rake point；Tiny pore is filled in the melted material formed into step 4, is formed
Plastic bubble, it is final to squeeze out.
Preferably, a diameter of 15mm in the small-bore.Aperture rather than after molding foam hole of the aperture for aerating
Diameter.
Preferably, screw rod head is equipped with the flat shaped mold of rack-style, and polypropylene expanded plastic pellet is squeezed by single screw rod
After going out, about 9mpa pressure is formed in machine letter intracavitary, foaming agent discharges gas at 160 DEG C, and foaming agent has uniformly divided in charging
It dissipates, forms evengranular preplasticizing body, all gas is not yet discharged by stirring, squeezing disconnected foaming agent, in melt zone gas
Also it is compressed, clothes rack shape mold foaming transition region, temperature is more slightly higher than machine letter section, when polypropylene expanded plastic pellet is in extruder
It is interior by squeezing, after fusion plastification, by Screw Extrusion, fretting map sheet material is formed, then lead via water cold drum into mold release of pressure
Draw and be cooled into sheet material.
Present invention technical solution in this way, addition chemical toughening agent ethylene-butylene copolymer is as compatilizer, both
There is excellent toughness to have good processability again, it is good with polyolefin intermiscibility, this is because ethylene-butylene copolymer plastics point
Son measures narrowly distributing, and side octyl group is longer than side ethyl in molecular structure, therefore can form tie point with polypropylene in the molecular structure, point
Son fusion coordination is reasonable, therefore can deepen the plasticizing function of polypropylene plastics.Pentaerythritol ester has anti-as organic polymer
Oxidative function.Phosphite ester is the anti-oxidant auxiliary agent that can play synergy, which can rise in polypropylene
To heat resistanceheat resistant oxidative stability.Adding calcium stearate has thermostability function, and lubrication toughening can be also played to polypropylene, thickens it
Function.Environment-friendly foaming agent uses one sodium of a-aminoglutaric acid, also known as sodium glutamate, and chemical property is substantially environmentally friendly, belongs to green
Color chemical products.Final products are not only environmentally friendly, but also particle is fine and smooth, durable.
Specific embodiment
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, implement below in conjunction with the present invention
Example, is clearly and completely described the technical solution in the embodiment of the present invention, it is clear that described embodiment is the present invention
Part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
All other embodiments obtained under the premise of creative work are made, shall fall within the protection scope of the present invention.
Polypropylene expanded plastic pellet, it is characterised in that：It is composed of the following components：
Polypropylene：100 parts；
Pentaerythritol ester：0.5 part；
Phosphite ester：0.5 part；
Calcium stearate：0.5 part；
One sodium of a- aminoglutaric acids：1 part；
Ethylene-butylene copolymer：5-8 parts；
Sodium glutamate：0.01-0.1 parts；
Antioxidant：0.1-0.5 parts.
Step 1：Antioxidant is put into processing container in advance, to processing container heating, vessel temp is processed at this time and is no more than
100 degrees Celsius；Antioxidant is antioxidant 1010 and the mixing antioxidant of irgasfos 168, and any of which component is not less than 10%.
Step 2：By polypropylene, calcium stearate, ethylene-butylene copolymer premixing；Polypropylene material must carry out before adding in
It is crushed to powder.
Step 3：The mixture that step 2 obtains is put into processing container and carries out processing early period, dries and removes moisture；At this time
It is 200 degrees Celsius to process temperature in container, and step 3 duration is 30 minutes；
Step 4：Remaining ingredient is added in into processing container, is mediated, it is Celsius for 200 to process temperature in container at this time
Degree, step 4 duration are 30 minutes；
Step 5：The raw material obtained in step 4 is added in into Single screw extrusion, is granulated；Single screw rod body processing the step of be：
Small-bore is vertically or longitudinally formed at single-screw machine melt zone；Alloy gas rake thin is bumped into, some aerating apertures are harrowed in formation more；
Screw machine latter end is equipped with speed reducer, and speed reducer rear end face is equipped with air pressurized contracting machine to single screw rod gas pressurized；Gas enters spiral shell
Bar machine melt zone, alloy gas rake thin form multiple in fusiform rake point in single screw rod melt zone groove；Into step 4
Tiny pore is filled in the melted material of formation, forms plastic bubble, it is final to squeeze out.
Step 6：Dry, finally weighing, detection, packaging finish.
In preparation process, a diameter of 15mm in small-bore.
Further, the invention also includes the manufacturing process of sheet material, screw rod head is equipped with the flat shaped mold of rack-style,
After polypropylene expanded plastic pellet is by Single screw extrusion, about 9mpa pressure is formed in machine letter intracavitary, foaming agent is released at 160 DEG C
Deflation body, foaming agent have been uniformly dispersed in charging, evengranular preplasticizing body are formed, by stirring, squeezing disconnected foaming
Agent not yet discharges all gas, is also compressed in melt zone gas, and clothes rack shape mold foaming transition region, temperature is omited than machine letter section
Height, when polypropylene expanded plastic pellet in extruder by squeeze, fusion plastification after, by Screw Extrusion, into mold release of pressure
Fretting map sheet material is formed, then sheet material is cooled into via water cold drum traction.
Such sheet material production method is processed convenient for the later stage.Polypropylene expanded plastic pellet based on fretting map reason
By upper its bubble aperture that defines between 0.1 μm to 250 μm, typical cell density is 104~105Abscess/cm3.The present invention
Patent is to apply micro ＆ nano technology, in single screw extrusion machine, using chemistry with two methods of physics for polypropylene into
Row is modified.Pore size in final particle has been taken into account gas permeability and durability, has been made up poly- close to natural biology surface pores
Propylene performance is insufficient, close to natural material.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, without necessarily requiring or implying between these entities or operation
There are any actual relationship or orders.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Cover non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only include that
A little elements, but also including other elements that are not explicitly listed or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", not
Also there are other identical elements in the process, method, article or apparatus that includes the element for exclusion.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
The present invention is described in detail, it will be understood by those of ordinary skill in the art that：It still can be to aforementioned each implementation
Technical solution recorded in example modifies or carries out equivalent replacement to which part technical characteristic；And these modification or
It replaces, the spirit and scope for various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution.
Claims (7)
1. polypropylene expanded plastic pellet, it is characterised in that：It is composed of the following components：
Polypropylene：100 parts；
Pentaerythritol ester：0.5 part；
Phosphite ester：0.5 part；
Calcium stearate：0.5 part；
One sodium of a- aminoglutaric acids：1 part；
Ethylene-butylene copolymer：5-8 parts；
Sodium glutamate：0.01-0.1 parts；
Antioxidant：0.1-0.5 parts.
2. the preparation method of processing polypropylene expanded plastic pellet described in claim 1, it is characterised in that：
Including affiliated step：Step 1：Antioxidant is put into processing container in advance, to processing container heating, processes container temperature at this time
Degree is no more than 100 degrees Celsius；
Step 2：By polypropylene, calcium stearate, ethylene-butylene copolymer premixing；
Step 3：The mixture that step 2 obtains is put into processing container and carries out processing early period, dries and removes moisture；Processing is held at this time
Temperature is 200 degrees Celsius in device, and step 3 duration is 30 minutes；
Step 4：Remaining ingredient is added in into processing container, is mediated, it is 200 degrees Celsius to process temperature in container at this time, step
Rapid 4 duration is 30 minutes；
Step 5：The raw material obtained in step 4 is added in into Single screw extrusion, is granulated；
Step 6：Dry, finally weighing, detection, packaging finish.
3. the preparation method of polypropylene expanded plastic pellet as claimed in claim 2, it is characterised in that：It is adopted in the step 1
With the mixing antioxidant that antioxidant is antioxidant 1010 and irgasfos 168, any of which component is not less than 10%.
4. the preparation method of polypropylene expanded plastic pellet as claimed in claim 2, it is characterised in that：Before polypropylene material adds in
It must crush to powder.
5. the preparation method of polypropylene expanded plastic pellet as claimed in claim 2, it is characterised in that：Single screw rod in step 5
Body processing the step of be：Small-bore is vertically or longitudinally formed at single-screw machine melt zone；Alloy gas rake thin is bumped into, is formed
Harrow some aerating apertures more；Screw machine latter end is equipped with speed reducer, and speed reducer rear end face is equipped with air pressurized contracting machine to single screw rod gas
Pressurization；Gas enters screw machine melt zone, and alloy gas rake thin forms multiple in fusiform in single screw rod melt zone groove
Rake point；Tiny pore is filled in the melted material formed into step 4, forms plastic bubble, it is final to squeeze out.
6. the preparation method of polypropylene expanded plastic pellet as claimed in claim 5, it is characterised in that：The small-bore diameter
For 15mm.
7. a kind of claim 2 prepares the sheet manufacturing process of the polypropylene expanded plastic pellet of gained, it is characterised in that：Screw rod
Head is equipped with the flat shaped mold of rack-style, after polypropylene expanded plastic pellet is by Single screw extrusion, is formed in machine letter intracavitary
About 9mpa pressure, foaming agent discharge gas at 160 DEG C, and foaming agent has been uniformly dispersed in charging, formed evengranular pre-
Body is plasticized, all gas is not yet discharged by stirring, squeezing disconnected foaming agent, is also compressed in melt zone gas, clothes rack shape mold
Foam transition region, and temperature is more slightly higher than machine letter section, when polypropylene expanded plastic pellet passes through extruding, fusion plastification in extruder
Afterwards, by Screw Extrusion, fretting map sheet material is formed, then sheet material is cooled into via water cold drum traction into mold release of pressure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711415591.9A CN108250569A (en) | 2017-12-25 | 2017-12-25 | Polypropylene expanded plastic pellet and its sheet material preparation process |
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| CN201711415591.9A CN108250569A (en) | 2017-12-25 | 2017-12-25 | Polypropylene expanded plastic pellet and its sheet material preparation process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114561065A (en) * | 2021-12-15 | 2022-05-31 | 金发科技股份有限公司 | Polypropylene composite material with biological inductivity and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102250423A (en) * | 2011-07-08 | 2011-11-23 | 中国石油化工股份有限公司 | Foaming polypropylene composition |
| CN103724807A (en) * | 2013-12-17 | 2014-04-16 | 浙江普利特新材料有限公司 | Polypropylene composite material with low after shrinkage, high modulus and high impact resistance and preparation method thereof |
-
2017
- 2017-12-25 CN CN201711415591.9A patent/CN108250569A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102250423A (en) * | 2011-07-08 | 2011-11-23 | 中国石油化工股份有限公司 | Foaming polypropylene composition |
| CN103724807A (en) * | 2013-12-17 | 2014-04-16 | 浙江普利特新材料有限公司 | Polypropylene composite material with low after shrinkage, high modulus and high impact resistance and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 朱伟林: "超临界流体挤出发泡片材口模结构设计及优化", 《中国优秀硕士论文全文数据库 工程科技I辑》 * |
| 王建清等: "《包装材料学》", 28 February 2017, 中国轻工业出版社 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114561065A (en) * | 2021-12-15 | 2022-05-31 | 金发科技股份有限公司 | Polypropylene composite material with biological inductivity and preparation method and application thereof |
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