CN112341684A - Production process of nano calcium carbonate functional master batch for PE blown film - Google Patents
Production process of nano calcium carbonate functional master batch for PE blown film Download PDFInfo
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- CN112341684A CN112341684A CN201910721846.7A CN201910721846A CN112341684A CN 112341684 A CN112341684 A CN 112341684A CN 201910721846 A CN201910721846 A CN 201910721846A CN 112341684 A CN112341684 A CN 112341684A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
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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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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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
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
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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
- C08J2423/06—Polyethene
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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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)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a production process of a nanometer calcium carbonate functional master batch for PE blown film, which comprises the following steps: firstly, putting nano calcium carbonate into an activating machine to dry to 110 ℃, putting a hyper-dispersant to mix for 1 minute, putting PE wax, white mineral oil and stearic acid to mix for 5 minutes, putting PE plastic to mix for 1 minute, setting the temperature of a double screw at 130-160 ℃, setting the rotating speed of an extruder at 40 rpm, feeding at 20 rpm, starting up to extrude, and carrying out air cooling and hot cutting granulation; the product of the invention has uniform texture, good dispersion and no crystal point, is added according to the proportion of 30 percent, has no bubble and water wave phenomenon, does not need drying, has good transverse and longitudinal tension of a film product, better transparency than barium sulfate, light specific gravity and high cost performance, and greatly improves the production benefit. Compared with barium sulfate master batches, the product can be better filled in a PE film, the influence of tension is small, the transparency is high, and the emission of dioxin and carbon dioxide can be effectively reduced when the film is burnt in the highly filled PE film.
Description
Technical Field
The invention belongs to the field of PE blown films, and particularly relates to a production process of a nano calcium carbonate functional master batch for PE blown films.
Background
At present, barium sulfate and sodium sulfate are used as transparent fillers in PE blown films, but barium sulfate master batches are high in price due to large specific gravity, so that the use cost is greatly influenced, the sodium sulfate is powder and is easy to absorb moisture, the product is easy to separate out in application, and the application range is limited.
Disclosure of Invention
The invention aims to provide a production process of a nanometer calcium carbonate functional master batch for PE blown film, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a production process of nanometer calcium carbonate functional master batches for PE blown films comprises the following steps:
s1, putting the nano calcium carbonate into an activator, drying to 110 ℃, and keeping the raw materials dry to avoid doping moisture;
s2, adding the hyperdispersant and mixing for 1 minute;
s3, adding the PE wax, the white mineral oil and the stearic acid, and mixing for 5 minutes;
s4, adding PE plastic and mixing for 1 minute;
s5, setting the temperature of the twin-screw at 130-160 ℃, and keeping the temperature for 60min to enable the raw materials to be in a molten state;
s6, rotating speed of the extruder is 40 rpm, feeding is 20 rpm, starting the extruder for extrusion, and conveying the raw materials to a die orifice by a screw, wherein the pressure of the extruder is 30-50 MPa;
s7, air cooling and hot cutting granulation, wherein the raw materials are extruded from a die orifice, the raw materials are cut by an extrusion orifice cutter to form granules, and an air cooling machine is arranged on the side edge of the die orifice of the extruder for rapid cooling, so that the molding is quicker, more stable and is not adhered;
s8, conveying the formed master batches to a vibrating screen, selecting the screen, starting the vibrating screen, and screening the master batches with unqualified undersize;
and S9, packaging after screening, wherein the packaging bag is a paper-plastic bag, the inner surface of the paper-plastic bag is provided with a PE film, and weighing and sealing are carried out after packaging.
Preferably, the master batch production raw material contains 78% of nano calcium carbonate, 1% of hyperdispersant, 5% of PE wax, 0.5% of white mineral oil, 0.5% of stearic acid and 15% of PE plastic.
Preferably, the master batches which are not screened in S8 are heated, melted and fed into the extruder again, extruded, granulated and screened again, and the vibration frequency of the vibration screen is 10-25 HZ.
Compared with the prior art, the invention has the beneficial effects that: the product of the invention has uniform texture, good dispersion and no crystal point, is added according to the proportion of 30 percent, has no bubble and water wave phenomenon, does not need to be dried, has good transverse and longitudinal tension of a film product, better transparency than sodium sulfate, light specific gravity and high cost performance, and greatly improves the production benefit. Compared with barium sulfate master batches, the product can be better filled in a PE film, the influence of tension is small, the transparency is high, and the emission of dioxin and carbon dioxide can be effectively reduced when the film is burnt in the highly filled PE film; the nano calcium carbonate has wide sources and relatively low price, is filled with plastics, is a novel material which is green, environment-friendly and beneficial to environment; the nanometer calcium carbonate filled PE functional master batch is a new application of superfine calcium carbonate in manufacturing the functional master batch, for example, PE blown film can replace a part of plastic, does not influence transparency, and can improve the transverse and longitudinal tension of film products.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A production process of nanometer calcium carbonate functional master batches for PE blown films comprises the following steps:
s1, putting the nano calcium carbonate into an activator, drying to 110 ℃, and keeping the raw materials dry to avoid doping moisture;
s2, adding the hyperdispersant and mixing for 1 minute;
s3, adding the PE wax, the white mineral oil and the stearic acid, and mixing for 5 minutes;
s4, adding PE plastic and mixing for 1 minute;
s5, setting the temperature of the twin-screw at 130-160 ℃, and keeping the temperature for 60min to enable the raw materials to be in a molten state;
s6, rotating speed of the extruder is 40 rpm, feeding is 20 rpm, starting the extruder for extrusion, and conveying the raw materials to a die orifice by a screw, wherein the pressure of the extruder is 30-50 MPa;
s7, air cooling and hot cutting granulation, wherein the raw materials are extruded from a die orifice, the raw materials are cut by an extrusion orifice cutter to form granules, and an air cooling machine is arranged on the side edge of the die orifice of the extruder for rapid cooling, so that the molding is quicker, more stable and is not adhered;
s8, conveying the formed master batches to a vibrating screen, selecting the screen, starting the vibrating screen, and screening the master batches with unqualified undersize; heating and melting the screened unqualified master batch, feeding the master batch into the extruder again, extruding, granulating and screening again, wherein the vibration frequency of the vibrating screen is 10-25 HZ;
and S9, packaging after screening, wherein the packaging bag is a paper-plastic bag, the inner surface of the paper-plastic bag is provided with a PE film, and weighing and sealing are carried out after packaging.
Specifically, the master batch production raw materials comprise 78% of nano calcium carbonate, 1% of hyperdispersant, 5% of PE wax, 0.5% of white mineral oil, 0.5% of stearic acid and 15% of PE plastic.
The product of the invention has uniform texture, good dispersion and no crystal point, is added according to the proportion of 30 percent, has no bubble and water wave phenomenon, does not need to be dried, has good transverse and longitudinal tension of a film product, better transparency than sodium sulfate, light specific gravity and high cost performance, and greatly improves the production benefit. Compared with barium sulfate master batches, the product can be better filled in a PE film, the influence of tension is small, the transparency is high, and the emission of dioxin and carbon dioxide can be effectively reduced when the film is burnt in the highly filled PE film; the nano calcium carbonate has wide sources and relatively low price, is filled with plastics, is a novel material which is green, environment-friendly and beneficial to environment; the nanometer calcium carbonate filled PE functional master batch is a new application of superfine calcium carbonate in manufacturing the functional master batch, for example, PE blown film can replace a part of plastic, does not influence transparency, and can improve the transverse and longitudinal tension of film products.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (3)
1. A production process of nanometer calcium carbonate functional master batches for PE blown films is characterized by comprising the following steps:
s1, putting the nano calcium carbonate into an activator, drying to 110 ℃, and keeping the raw materials dry to avoid doping moisture;
s2, adding the hyperdispersant and mixing for 1 minute;
s3, adding the PE wax, the white mineral oil and the stearic acid, and mixing for 5 minutes;
s4, adding PE plastic and mixing for 1 minute;
s5, setting the temperature of the twin-screw at 130-160 ℃, and keeping the temperature for 60min to enable the raw materials to be in a molten state;
s6, rotating speed of the extruder is 40 rpm, feeding is 20 rpm, starting the extruder for extrusion, and conveying the raw materials to a die orifice by a screw, wherein the pressure of the extruder is 30-50 MPa;
s7, air cooling and hot cutting granulation, wherein the raw materials are extruded from a die orifice, the raw materials are cut by an extrusion orifice cutter to form granules, and an air cooling machine is arranged on the side edge of the die orifice of the extruder for rapid cooling, so that the molding is quicker, more stable and is not adhered;
s8, conveying the formed master batches to a vibrating screen, selecting the screen, starting the vibrating screen, and screening the master batches with unqualified undersize;
and S9, packaging after screening, wherein the packaging bag is a paper-plastic bag, the inner surface of the paper-plastic bag is provided with a PE film, and weighing and sealing are carried out after packaging.
2. The production process of the nanometer calcium carbonate functional master batch for the PE blown film according to claim 1, which is characterized in that: the master batch production raw materials comprise 78% of nano calcium carbonate, 1% of hyperdispersant, 5% of PE wax, 0.5% of white mineral oil, 0.5% of stearic acid and 15% of PE plastic.
3. The production process of the nanometer calcium carbonate functional master batch for the PE blown film according to claim 1, which is characterized in that: and heating and melting the unqualified master batch screened in the S8, feeding the master batch into the extruder again, extruding, granulating and screening again, wherein the vibration frequency of the vibration sieve is 10-25 HZ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910721846.7A CN112341684A (en) | 2019-08-06 | 2019-08-06 | Production process of nano calcium carbonate functional master batch for PE blown film |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910721846.7A CN112341684A (en) | 2019-08-06 | 2019-08-06 | Production process of nano calcium carbonate functional master batch for PE blown film |
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| CN112341684A true CN112341684A (en) | 2021-02-09 |
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| CN201910721846.7A Pending CN112341684A (en) | 2019-08-06 | 2019-08-06 | Production process of nano calcium carbonate functional master batch for PE blown film |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107118447A (en) * | 2017-07-07 | 2017-09-01 | 内江市雅斯合成材料有限公司 | A kind of special master batch of high-performance synthetic paper and preparation method thereof |
| CN107216514A (en) * | 2017-07-17 | 2017-09-29 | 山西兰花华明纳米材料股份有限公司 | A kind of nano-calcium carbonate polyolefin master batch and preparation method thereof |
| CN108530730A (en) * | 2018-04-18 | 2018-09-14 | 大丰汉士高分子材料有限公司 | A kind of PE high filling master batch and preparation method thereof of doping calcium carbonate superfine powder |
-
2019
- 2019-08-06 CN CN201910721846.7A patent/CN112341684A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107118447A (en) * | 2017-07-07 | 2017-09-01 | 内江市雅斯合成材料有限公司 | A kind of special master batch of high-performance synthetic paper and preparation method thereof |
| CN107216514A (en) * | 2017-07-17 | 2017-09-29 | 山西兰花华明纳米材料股份有限公司 | A kind of nano-calcium carbonate polyolefin master batch and preparation method thereof |
| CN108530730A (en) * | 2018-04-18 | 2018-09-14 | 大丰汉士高分子材料有限公司 | A kind of PE high filling master batch and preparation method thereof of doping calcium carbonate superfine powder |
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Application publication date: 20210209 |