CN112778639A - Low-temperature liquid packaging bag material and preparation method thereof - Google Patents
Low-temperature liquid packaging bag material and preparation method thereof Download PDFInfo
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
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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
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C—CHEMISTRY; METALLURGY
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
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- 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
- C08K2201/017—Additives being an antistatic agent
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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
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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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Abstract
The invention discloses a liquid packaging bag material for low temperature, which consists of polyolefin, an elastomer, an opening slipping agent, an antistatic agent and a production processing aid, wherein the weight ratio of each component is as follows: 30-90 parts of polyolefin, 10-80 parts of elastomer, 0.1-10 parts of opening slipping agent, 0.1-10 parts of antistatic agent and 0.1-10 parts of production processing aid. The liquid packaging bag for low temperature that adopts this material preparation to form possesses better low temperature toughness in comparison in traditional body fluid wrapping bag to avoid lasting plastic deformation that leads to under the low temperature for a long time, possess stronger anti-vibration impact ability, be fit for more in the low temperature long-distance transport process to liquid packaging bag shock-resistant, resistant vibration and low temperature resistant requirement.
Description
Technical Field
The invention relates to the field of materials, in particular to a liquid packaging bag material for low temperature and a preparation method thereof.
Background
Containerized liquid bags, a new type of cost effective liquid bulk packaging product, are typically constructed of thermoplastic materials that can be readily converted from conventional shipping containers into containers for transporting liquids.
The liquid packaging bag special for the low-temperature railway has the characteristics of large capacity, low cost, flexible transportation, convenient loading and unloading and the like. However, due to the fact that road conditions (continuous vibration impact with a certain frequency) and transportation conditions (materials are prone to becoming brittle under severe environments such as low temperature) are severe, impact on the materials is continuous, and the materials are prone to being damaged locally, so that risks such as liquid leakage and the like occur, and the problem is the biggest problem of transportation by using liquid bags at present.
Therefore, a new material for a liquid packaging bag for low temperature is required to solve the above problems.
Disclosure of Invention
The invention aims to provide a novel technical scheme of a liquid packaging bag material for low-temperature liquid.
According to the first aspect of the invention, the liquid packaging bag material for low temperature is provided, which consists of polyolefin, elastomer, opening slipping agent, antistatic agent and production processing aid, wherein the weight ratio of each component is as follows: 30-90 parts of polyolefin, 10-80 parts of elastomer, 0.1-10 parts of opening slipping agent, 0.1-10 parts of antistatic agent and 0.1-10 parts of production processing aid.
Preferably, the weight ratio of each component is as follows: 83.5 parts of polyolefin, 10 parts of elastomer, 3 parts of opening slipping agent, 3 parts of antistatic agent and 0.5 part of production processing aid.
Preferably, the polyolefin is one or a mixture of polypropylene, polyethylene, polyvinyl chloride, polycarbonate, nylon and polyethylene terephthalate.
Preferably, the polyolefin is one or two of polyethylene and polypropylene.
Preferably, the elastomer is formed by mixing one or more of TPE, TPR, TPO, TPV, TPI, TPU, POE and POP.
Preferably, the elastomer is one or two of POP and TPO.
Preferably, the opening slipping agent is formed by mixing one or more of inorganic talcum powder, diatomite, organic oleamide, erucamide and silicon dioxide.
Preferably, the antistatic agent is an anionic antistatic agent or a nonionic antistatic agent.
According to an embodiment of the disclosure, the liquid packaging bag for low temperature manufactured by the material has better low-temperature toughness compared with the traditional liquid packaging bag, avoids plastic deformation caused by long-time continuous low temperature, has stronger shock resistance and shock impact resistance, and is more suitable for the requirements of impact resistance, vibration resistance and low temperature resistance on the liquid packaging bag in the process of low-temperature long-distance transportation.
Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
Example one
The embodiment discloses a liquid packaging bag material for low temperature, which consists of polyolefin, an elastomer, an opening slipping agent, an antistatic agent and a production processing aid (the production processing aid is PPA), wherein the weight ratio of the components is as follows: 30-90 parts of polyolefin, 10-80 parts of elastomer, 0.1-10 parts of opening slipping agent, 0.1-10 parts of antistatic agent and 0.1-10 parts of production processing aid.
Wherein the polyolefin is formed by mixing one or more of polypropylene, polyethylene, polyvinyl chloride, polycarbonate, nylon and polyethylene terephthalate (PET).
The polyolefin is preferably polyethylene or polypropylene, or a blend of 50 percent each of polyethylene and polypropylene.
The elastomer is formed by mixing one or more of TPE, TPR, TPO, TPV, TPI, TPU, POE and POP, and one or two of POP and TPO are adopted to be mixed to form the best.
The opening slipping agent is formed by mixing one or more of inorganic talcum powder, diatomite, organic oleamide, erucamide and silicon dioxide.
The antistatic agent is an internal mixing type antistatic agent, namely a type of antistatic agent added into polyolefin in the process of processing products, and the antistatic agent with 0.1-5% of the mass of resin and added is mechanically mixed and then is processed for granulation and molding. The main classes are anionic antistatic agents, such as alkali metal salts of alkylsulfonic acids, phosphoric acids or dithiocarbamic acids, and also nonionic antistatic agents, such as ethoxylated aliphatic alkylamines and the like.
The PPA added mainly refers to a class of fluoropolymer processing aids, such as the commonly used grades on the market, such as 2800, 2300, and the like.
In the embodiment, after the elastomer is added, the crystal structure of the polyolefin is improved, and after blending, the components and the content of the non-crystal are increased, so that the low-temperature toughness can be improved to a certain extent, and compared with the original crystal structure, the impact property of the material is greatly improved; the opening slipping agent is an aid added on the basis of the opening properties of the film, and the antistatic agent is an aid added on the basis of the greater static electricity of the film, and the two types of aids do not play a decisive role in the low-temperature toughness mentioned in the patent.
According to an embodiment of the disclosure, the liquid packaging bag for low temperature manufactured by the material has better low-temperature toughness compared with the traditional liquid packaging bag, avoids plastic deformation caused by long-time continuous low temperature, has stronger shock resistance and shock impact resistance, and is more suitable for the requirements of impact resistance, vibration resistance and low temperature resistance on the liquid packaging bag in the process of low-temperature long-distance transportation.
After the liquid packaging bag material for low temperature in this example was produced into a packaging bag, a rubbing test and a dart impact test were performed on the packaging bag with the same general specification, and the test results are shown in the following table:
table 1: comparison of the parameters of the packaging bags made of the materials in this example with those of the existing packaging bags of the same specification
Compared with the existing product, the low-temperature liquid packaging bag prepared by the formula has obvious advantages in low-temperature rubbing performance and dart impact of the product. In the aspect of liquid transportation safety, the impact resistance and friction resistance of the product can be improved at low temperature to the greatest extent, and the accident rate is reduced.
Example two
In this example, 90 parts of polypropylene as main substrate, 10 parts of TPO as elastomer material, 5 parts of inorganic talc powder and 3 parts of alkyl sulfonic acid were selected, and when different parts of production processing aid were added, the various parameters of the produced liquid packaging bag material for low temperature were as follows:
table 2: effect of different parts of production processing aid on parameters of liquid packaging bag material for low temperature
As can be seen from the above table, with the increase of the production processing aid, the tensile strength of the polyethylene/polypropylene film material is reduced to a certain extent, and the dart drop impact and the low-temperature kneading performance are also reduced, wherein the change of the number of the low-temperature kneading pinholes is large, which indicates that the addition of a small amount of the production processing aid has a positive effect on the low-temperature liquid packaging bag, and with the increase of the usage amount, the low-temperature liquid packaging bag is adversely affected.
EXAMPLE III
In this example, 90 parts of polypropylene as main base material, 10 parts of TPO as elastomer material, 5 parts of inorganic talc powder and 2 parts of PPA were selected, and when different parts of alkyl sulfonic acid as antistatic agent were added, the parameters of the produced liquid packaging bag material for low temperature were as follows:
table 3: effect of different parts of antistatic agent on parameters of liquid packaging bag material for low temperature
As can be seen from the above table, with the increase of the addition of the antistatic agent, the tensile strength of the polyethylene/polypropylene film material is reduced to a certain extent, the influence on other parameters is small, the dart impact effect is slightly good when the antistatic agent is added to 3 parts, and the antistatic effect is also good.
Example four
In this example, 90 parts of polypropylene as main base material, 10 parts of TPO as elastomer material, 3 parts of alkyl sulfonic acid as antistatic agent, and 2 parts of PPA were selected, and when different parts of inorganic talc powder as opening slipping agent were added, the parameters of the produced liquid packaging bag material for low temperature were as follows:
table 4: effect of different portions of opening slipping agent on parameters of liquid packaging pouch material for low temperature
As can be seen from the above table, with the increase of the part of the opening slipping agent, the tensile strength of the polyethylene/polypropylene film material has a certain degree of change, and when 3 parts of the opening slipping agent are added, the optimal tensile strength is achieved, and meanwhile, the dart impact and the low-temperature kneading performance have lower change amplitude.
EXAMPLE five
In this example, 90 parts of polypropylene as main base material, 5 parts of alkyl sulfonic acid as antistatic agent, 2 parts of PPA, 3 parts of inorganic talc as opening slipping agent, and when different parts of TPO are added as elastomer material, the parameters of the produced liquid packaging bag material for low temperature are shown in the following table:
table 5: effect of different parts of elastomer on parameters of liquid packaging pouch materials for low temperature applications
It can be seen from the above table that, as the amount of the elastomer is increased, the tensile strength of the polyethylene/polypropylene film material is reduced to a certain extent, and meanwhile, the dart impact and the low-temperature kneading performance are obviously improved, wherein the number of the low-temperature kneading pinholes is gradually reduced. It is demonstrated that the impact properties and low temperature toughness of the membrane material itself are improved as the amount of TPO elastomer is increased.
EXAMPLE six
In this example, 10 parts of TPO was selected as the elastomer material, 5 parts of alkyl sulfonic acid as the antistatic agent, 2 parts of PPA, 3 parts of inorganic talc as the mouth-opening slipping agent, and when different parts of polypropylene were added as the main base material, the various parameters of the produced liquid packaging bag material for low temperature use were as follows:
table 6: effect of different parts of polyolefin on parameters of liquid packaging pouch materials for low temperature applications
As can be seen from the above table, with the increase of the polyolefin amount, the tensile strength of the polyethylene/polypropylene film material is increased to a certain extent, and the dart drop impact and the low-temperature kneading performance are obviously improved, wherein the number of the low-temperature kneading pinholes is gradually reduced, and the average values of the tensile strength, the heat seal line fracture displacement, the dart drop impact and the number of the low-temperature kneading pinholes are all the best at 83 portions.
EXAMPLE seven
In a specific example, when the liquid packaging bag for low temperature is specifically manufactured, various selected formulas are as follows:
(1) weighing the materials according to the proportion, fully stirring the materials to mix the materials, and uniformly mixing the materials and then feeding the materials into a screw;
(2) the diameter of a screw of the extruder is 50mm, and the length-diameter ratio is 30: 1, the compression ratio is 1.3, the diameter of a die orifice is 75 millimeters, the gap of the die orifice is 1.5 millimeters, the structure of a machine head is spiral, the extrusion power is 10 kilowatts, and the maximum extrusion amount is 25 kilograms per hour.
(3) The extrusion process conditions are as follows: the blow-up ratio was 2.5, the screw rotation speed was 20 rpm, the drawing speed was 20 m/min, the molding temperature was 230 ℃, the condensation line height was 500 mm, and the winding speed was 40 m/min.
Example eight
(1) Weighing the materials according to the proportion, fully stirring the materials to mix the materials, and uniformly mixing the materials and then feeding the materials into a screw;
(2) the diameter of a screw of the extruder is 50mm, and the length-diameter ratio is 30: 1, the compression ratio is 1.3, the diameter of a die orifice is 75 millimeters, the gap of the die orifice is 1.5 millimeters, the structure of a machine head is spiral, the extrusion power is 15 kilowatts, and the maximum extrusion amount is 45 kilograms per hour.
(3) The extrusion process conditions are as follows: the blow-up ratio was 3.5, the screw rotation speed was 70 rpm, the drawing speed was 30 m/min, the molding temperature was 200 ℃, the condensation line height was 400 mm, and the winding speed was 60 m/min.
Example nine
Weighing the materials according to the proportion, fully stirring the materials to mix the materials, and uniformly mixing the materials and then feeding the materials into a screw;
the diameter of a screw of the extruder is 90mm, and the length-diameter ratio is 25: 1, the machine head is spiral, the diameter of a die opening is 250mm, and the gap between the die openings is 2 mm.
The extrusion process conditions are as follows: the three-stage processing temperature is 180 ℃, 190 ℃, 200 ℃, the screw rotating speed is 55 r/min, the blow-up ratio is 2, the traction speed is 25 m/min, the width of the product is 750 mm, and the thickness is 0.04 mm
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (8)
1. The liquid packaging bag material for low temperature is characterized by comprising polyolefin, an elastomer, an opening slipping agent, an antistatic agent and a production processing aid, wherein the weight ratio of the components is as follows: 30-90 parts of polyolefin, 10-80 parts of elastomer, 0.1-10 parts of opening slipping agent, 0.1-10 parts of antistatic agent and 0.1-10 parts of production processing aid.
2. The liquid packaging bag material for low temperature as claimed in claim 1, wherein the weight ratio of each component is: 83.5 parts of polyolefin, 10 parts of elastomer, 3 parts of opening slipping agent, 3 parts of antistatic agent and 0.5 part of production processing aid.
3. The liquid packaging bag material for low temperature as claimed in claim 2, wherein the polyolefin is one or more selected from polypropylene, polyethylene, polyvinyl chloride, polycarbonate, nylon and polyethylene terephthalate.
4. The liquid packaging bag material for low temperature use according to claim 3, wherein the polyolefin is one or a mixture of two of polyethylene and polypropylene.
5. The liquid packaging bag material for low temperature use according to claim 2, wherein the elastomer is one or more of TPE, TPR, TPO, TPV, TPI, TPU, POE and POP.
6. The liquid packaging bag material for low temperature use according to claim 5, wherein the elastomer is one or a mixture of POP and TPO.
7. The liquid packaging bag material for low temperature use according to claim 2, wherein the opening slipping agent is formed by mixing one or more of inorganic talcum powder, diatomite, organic oleamide, erucamide and silicon dioxide.
8. The liquid packaging bag material for low temperature use according to claim 2, wherein the antistatic agent is an anionic antistatic agent or a nonionic antistatic agent.
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| WO2019154354A1 (en) * | 2018-02-08 | 2019-08-15 | 贝内克-长顺汽车内饰材料（张家港）有限公司 | Composition for preparing tpo surface layer, tpo surface layer prepared by means of same, and artificial leather |
| US20200148876A1 (en) * | 2016-12-26 | 2020-05-14 | SHANGHAI KUMHOSUNNY PLASTICS Co.,Ltd. | Ultralow-glossiness, ultralow-temperature resistant asa resin composition and preparation method thereof |
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2020
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| US20200148876A1 (en) * | 2016-12-26 | 2020-05-14 | SHANGHAI KUMHOSUNNY PLASTICS Co.,Ltd. | Ultralow-glossiness, ultralow-temperature resistant asa resin composition and preparation method thereof |
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| WO2019154354A1 (en) * | 2018-02-08 | 2019-08-15 | 贝内克-长顺汽车内饰材料（张家港）有限公司 | Composition for preparing tpo surface layer, tpo surface layer prepared by means of same, and artificial leather |
| CN109401036A (en) * | 2018-10-22 | 2019-03-01 | 深圳市智信达光电新材料有限公司 | Material compositing formula, packaging film manufacture craft, packaging film and the mattress of packaging film |
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Application publication date: 20210511 |