CN111117141A - Clean, dry and powder-free TPE tension leather material and preparation method thereof - Google Patents
Clean, dry and powder-free TPE tension leather material and preparation method thereof Download PDFInfo
- Publication number
- CN111117141A CN111117141A CN201911393878.5A CN201911393878A CN111117141A CN 111117141 A CN111117141 A CN 111117141A CN 201911393878 A CN201911393878 A CN 201911393878A CN 111117141 A CN111117141 A CN 111117141A
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- Prior art keywords
- powder
- dry
- clean
- sebs
- tpe
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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
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
- C08L53/025—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes modified
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
- C08L91/06—Waxes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
The invention discloses a clean, dry and powder-free TPE tension leather material and a preparation method thereof, wherein SEBS and white oil are mixed according to parts by weight and then fully absorb oil; adding the obtained product into modified PP, silicon ball micro powder and a grinding agent, and granulating by twin-screw at the temperature of about 170-220 ℃; and extruding and molding the obtained product at the temperature of between 170 and 210 ℃ by a single-screw extruder, and cooling and shaping the product to obtain the product. The extrusion surface matt degree and hand feeling of the material are improved by adopting modified PP, silicon ball micro powder and a frosting agent in the formula; on the process equipment, on the tension leather processing extrusion, the special design of a flow channel and the special treatment of a die orifice are carried out on an extrusion die head; the material is combined with process equipment to produce the powder-free tension sheet with matte surface and dry and comfortable hand feeling.
Description
Technical Field
The invention relates to the field of material preparation, in particular to a clean, dry and powder-free TPE tension leather material and a preparation method thereof.
Background
Along with the improvement of living standard of people, body-building activities are more and more walked into people's life, and body-building apparatus is also more and more miniaturized, and the pulling force piece can be used outdoor, indoor, conveniently carries, effectively improves health and activity ability, moulds perfect body curve, consequently, becomes one of people's favorite sports equipment. The material of the tension sheet sold in the market at present is mainly natural latex or synthetic latex. However, the latex tension sheet has high cost, complex forming and processing technology, great pollution to the environment during production and unrecoverable products.
The thermoplastic elastomer TPE is a material with the characteristics of high elasticity, high strength, high rebound resilience and plastic processing of rubber. TPE has the advantages of environmental protection, no toxicity, safety, wide hardness range, excellent colorability, soft touch feeling, weather resistance, fatigue resistance, temperature resistance, excellent processing performance, no need of vulcanization and the like, so that TPE has a very wide application market as a novel multifunctional environment-friendly material, such as household appliances, sports goods, automobile materials, medical instruments, the building industry, the shoe industry and the like. When the TPE is used as a tension sheet material, the TPE is required to have good elasticity, strength, weather resistance and environmental protection performance, and meanwhile, the production cost is required to be reduced.
In the prior art, a medical TPE tourniquet is generally prepared from thermoplastic polypropylene (PP), a thermoplastic elastomer hydrogenated styrene-butadiene-styrene block copolymer (SEBS) oil charge, and a suitable filler as raw materials.
The existing TPE tension leather product has poor hand feeling relative to a vulcanized latex tension sheet and needs surface treatment and powder adding. The surface treatment adds powder, increases equipment during production, pollutes the environment, has large dust on a working site, and has great harm to workers. The dust can cause harm to human body when the dust is used by consumers.
Disclosure of Invention
In order to solve the problem of poor hand feeling of the existing TPE tension leather, a clean, dry and powder-free TPE tension leather material and a preparation method thereof are provided.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
a clean, dry and powder-free TPE tension leather material is prepared from the following raw materials in parts by weight:
the further technology of the invention is as follows:
preferably, the SEBS is a mixture of a polymer SEBS and a low-molecular SEBS, and the ratio of the polymer SEBS to the low-molecular SEBS is 7: 3 to 3: 7, respectively.
Preferably, the modified PP is obtained by grafting extrusion-grade PP with amino silicone oil, and the melt index at 190 ℃ is 4-10 g/10 min.
Preferably, the white oil is paraffin oil with the molecular weight of 300-1000.
Preferably, the silicon spherical micro powder is silicone elastomer spherical micro particles connected with acrylic groups.
Preferably, the frosting agent is PMMA micron particles connected with acrylic groups.
The invention also provides a preparation method of the clean, dry and powder-free TPE tension leather material, which comprises the following steps:
(1) mixing SEBS and white oil in parts by weight, and fully absorbing oil;
(2) adding the product obtained in the step (1) into modified PP, silicon ball micro powder and a frosting agent, and granulating by passing through a double screw at the temperature of about 170-220 ℃;
(3) and (3) extruding and molding the product obtained in the step (2) at the temperature of between 170 and 210 ℃ by a single-screw extruder, and cooling and shaping the product to obtain the product.
Set up a returning charge storage space on the bush on extruding the runner for increase and extrude stability and die orifice pressure, form the fluidic high shear flow in bush department of polymer, help forming dull polish face, bush discharge end is dull polish surface treatment, increases and extrudes the dull polish effect on surperficial dull polish.
The invention has the beneficial effects that:
the extrusion surface matt degree and hand feeling of the material are improved by adopting modified PP, silicon ball micro powder and a frosting agent in the formula; on the process equipment, on the tension leather processing extrusion, the special design of a flow channel and the special treatment of a die orifice are carried out on an extrusion die head; the material is combined with process equipment to produce the powder-free tension sheet with matte surface and dry and comfortable hand feeling.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention.
The invention provides a preparation method of a clean, dry and powder-free TPE tension leather material, which comprises the following steps:
(1) mixing 100 parts of SEBS and 80-120 parts of white oil according to parts by weight, and fully absorbing oil;
(2) adding 10-30 parts of modified PP, 2-5 parts of silicon ball micro powder and 2-5 parts of abrasive agent into the product obtained in the step (1), and granulating by passing through a double screw at the temperature of about 170-220 ℃;
(3) and (3) extruding and molding the product obtained in the step (2) at the temperature of between 170 and 210 ℃ by a single-screw extruder, and cooling and shaping the product to obtain the product.
The SEBS is a mixture of high-molecular SEBS and low-molecular SEBS.
The modified PP is obtained by grafting extrusion-grade PP with amino silicone oil, and the melt index at 190 ℃ is 4-10 g/10 min.
The white oil is paraffin oil with the molecular weight of 300-1000.
The silicon sphere micro powder is organosilicon elastomer spherical micron particles connected with acrylic groups.
The frosting agent is PMMA micron particles connected with acrylic groups.
The SEBS has excellent rubber elasticity, excellent weather resistance, low temperature resistance, environmental protection performance, recyclability and the like, and is very suitable for preparing the medical tourniquet;
the PP modified SEBS is used, so that the melt viscosity of the SEBS can be reduced, and the SEBS is easy to process; on the other hand, the mechanical property of the SEBS elastomer system can be effectively improved.
The extrusion surface matt degree and hand feeling of the material are improved by adopting modified PP, silicon ball micro powder and a frosting agent in the formula; on the process equipment, a material returning and storing space is arranged on a port die on an extrusion flow channel in the process equipment for processing and extruding the tension leather, the material returning and storing space is used for increasing the extrusion stability and the pressure of the port die, forming high-shear flow of polymer fluid at the port die and facilitating the formation of a matte surface, the discharge end of the port die is subjected to frosted surface treatment, the frosted matte effect of the extrusion surface is increased, and the material is combined with the process equipment to produce the powder-free tension sheet with the matte surface and dry hand feeling.
Specifically, the experiment was carried out in the following three examples:
example 1:
(1) mixing 100 parts of SEBS and 80 parts of white oil in parts by weight, and fully absorbing oil;
(2) adding 10 parts of modified PP, 2 parts of silicon ball micro powder and 2 parts of abrasive agent into the product obtained in the step (1), and granulating by passing through a double screw at the temperature of 170-220 ℃;
(3) and (3) extruding and molding the product obtained in the step (2) at the temperature of between 170 and 210 ℃ by a single-screw extruder, and cooling and shaping the product to obtain the product.
Example 2:
(1) mixing 100 parts of SEBS and 120 parts of white oil according to parts by weight, and fully absorbing oil;
(2) adding 30 parts of modified PP, 5 parts of silicon ball micro powder and 5 parts of grinding agent into the product obtained in the step (1), and granulating by passing through a double screw at the temperature of 170-220 ℃;
(3) and (3) extruding and molding the product obtained in the step (2) at the temperature of between 170 and 210 ℃ by a single-screw extruder, and cooling and shaping the product to obtain the product.
Example 3:
(1) mixing 100 parts of SEBS and 100 parts of white oil according to parts by weight, and fully absorbing oil;
(2) adding 20 parts of modified PP, 4 parts of silicon ball micro powder and 4 parts of abrasive agent into the product obtained in the step (1), and granulating by passing through a double screw at the temperature of 170-220 ℃;
(3) and (3) extruding and molding the product obtained in the step (2) at the temperature of between 170 and 210 ℃ by a single-screw extruder, and cooling and shaping the product to obtain the product.
Tests of strength, resilience and the like were made for the above 3 examples and comparative examples:
through the above experiments, it was found that the elongation at break and the surface gloss are the highest in example 1, the hardness, the tensile strength and the tensile set property are the highest in example 2, and the intermediate performance in example 3;
through the experiment, on the premise of ensuring higher strength and resilience, the invention also needs to ensure excellent hand feeling, and the embodiment 2 is the best embodiment.
Through the experiment, on the premise of ensuring higher strength and resilience, the invention also needs to ensure excellent hand feeling, and the embodiment X is the best embodiment.
It is to be understood that the above-described embodiments are only a few, but not all, embodiments of the present invention. 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.
Claims (7)
1. The utility model provides a clean dry and comfortable no powder TPE pulling force skin material which characterized in that: the feed is prepared from the following raw materials in parts by weight:
2. the clean, dry and powder-free TPE tension leather material as claimed in claim 1, wherein: the SEBS is a mixture of high-molecular SEBS and low-molecular SEBS, and the ratio of the high-molecular SEBS to the low-molecular SEBS is 7: 3 to 3: 7, respectively.
3. The clean, dry and powder-free TPE tension leather material as claimed in claim 1, wherein: the modified PP is obtained by grafting extrusion-grade PP with amino silicone oil, and the melt index at 190 ℃ is 4-10 g/10 min.
4. The clean, dry and powder-free TPE tension leather material as claimed in claim 1, wherein: the white oil is paraffin oil with the molecular weight of 300-1000.
5. The clean, dry and powder-free TPE tension leather material as claimed in claim 1, wherein: the silicon sphere micro powder is organosilicon elastomer spherical micron particles connected with acrylic groups.
6. The clean, dry and powder-free TPE tension leather material as claimed in claim 1, wherein: the frosting agent is PMMA micron particles connected with acrylic groups.
7. The preparation method of the clean, dry and powder-free TPE tension leather material disclosed by any one of claims 1-6 comprises the following steps:
(1) mixing SEBS and white oil in parts by weight, and fully absorbing oil;
(2) adding the product obtained in the step (1) into modified PP, silicon ball micro powder and a frosting agent, and granulating by passing through a double screw at the temperature of about 170-220 ℃;
(3) and (3) extruding and molding the product obtained in the step (2) at the temperature of between 170 and 210 ℃ by a single-screw extruder, and cooling and shaping the product to obtain the product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911393878.5A CN111117141A (en) | 2019-12-30 | 2019-12-30 | Clean, dry and powder-free TPE tension leather material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911393878.5A CN111117141A (en) | 2019-12-30 | 2019-12-30 | Clean, dry and powder-free TPE tension leather material and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN111117141A true CN111117141A (en) | 2020-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911393878.5A Pending CN111117141A (en) | 2019-12-30 | 2019-12-30 | Clean, dry and powder-free TPE tension leather material and preparation method thereof |
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| CN (1) | CN111117141A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111961308A (en) * | 2020-08-13 | 2020-11-20 | 东莞市康逸电线有限公司 | Rubber material with frosted effect and preparation method thereof |
| CN114410050A (en) * | 2021-12-28 | 2022-04-29 | 安徽雄亚塑胶科技有限公司 | Smooth elastomer material, preparation method and application |
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| Publication number | Priority date | Publication date | Assignee | Title |
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Application publication date: 20200508 |
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