CN113930034A - Strong-buoyancy eraser and preparation method thereof - Google Patents
Strong-buoyancy eraser and preparation method thereof Download PDFInfo
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- CN113930034A CN113930034A CN202111427601.7A CN202111427601A CN113930034A CN 113930034 A CN113930034 A CN 113930034A CN 202111427601 A CN202111427601 A CN 202111427601A CN 113930034 A CN113930034 A CN 113930034A
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- 238000002360 preparation method Methods 0.000 title abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 26
- 239000004014 plasticizer Substances 0.000 claims abstract description 19
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 19
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 19
- 239000011347 resin Substances 0.000 claims abstract description 18
- 229920005989 resin Polymers 0.000 claims abstract description 18
- 239000003381 stabilizer Substances 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000000945 filler Substances 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 230000002087 whitening effect Effects 0.000 claims abstract description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 24
- ZFOZVQLOBQUTQQ-UHFFFAOYSA-N Tributyl citrate Chemical compound CCCCOC(=O)CC(O)(C(=O)OCCCC)CC(=O)OCCCC ZFOZVQLOBQUTQQ-UHFFFAOYSA-N 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 18
- 235000021355 Stearic acid Nutrition 0.000 claims description 13
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 13
- 239000008116 calcium stearate Substances 0.000 claims description 13
- 235000013539 calcium stearate Nutrition 0.000 claims description 13
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 13
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 13
- 239000008117 stearic acid Substances 0.000 claims description 13
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 13
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 12
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 12
- 239000004005 microsphere Substances 0.000 claims description 11
- ZPRGNTVUTLXHEJ-UHFFFAOYSA-N 2-hydroxy-2-(2-octoxy-2-oxoethyl)butanedioic acid Chemical compound CCCCCCCCOC(=O)CC(O)(C(O)=O)CC(O)=O ZPRGNTVUTLXHEJ-UHFFFAOYSA-N 0.000 claims description 8
- 238000005469 granulation Methods 0.000 claims description 8
- 230000003179 granulation Effects 0.000 claims description 8
- 239000002002 slurry Substances 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- QZCLKYGREBVARF-UHFFFAOYSA-N Acetyl tributyl citrate Chemical compound CCCCOC(=O)CC(C(=O)OCCCC)(OC(C)=O)CC(=O)OCCCC QZCLKYGREBVARF-UHFFFAOYSA-N 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 6
- 230000032683 aging Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 230000008961 swelling Effects 0.000 claims description 4
- CNGYZEMWVAWWOB-VAWYXSNFSA-N 5-[[4-anilino-6-[bis(2-hydroxyethyl)amino]-1,3,5-triazin-2-yl]amino]-2-[(e)-2-[4-[[4-anilino-6-[bis(2-hydroxyethyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulfophenyl]ethenyl]benzenesulfonic acid Chemical group N=1C(NC=2C=C(C(\C=C\C=3C(=CC(NC=4N=C(N=C(NC=5C=CC=CC=5)N=4)N(CCO)CCO)=CC=3)S(O)(=O)=O)=CC=2)S(O)(=O)=O)=NC(N(CCO)CCO)=NC=1NC1=CC=CC=C1 CNGYZEMWVAWWOB-VAWYXSNFSA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 12
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 9
- 239000006081 fluorescent whitening agent Substances 0.000 description 9
- 238000006116 polymerization reaction Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000007667 floating Methods 0.000 description 6
- 238000004383 yellowing Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 235000011837 pasties Nutrition 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N 1,4a-dimethyl-7-propan-2-yl-2,3,4,4b,5,6,10,10a-octahydrophenanthrene-1-carboxylic acid Chemical compound C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000011258 core-shell material Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L19/00—Erasers, rubbers, or erasing devices; Holders therefor
- B43L19/0025—Eraser or rubber material, e.g. comprising hard particles
-
- 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
-
- 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
Abstract
The invention discloses a strong-buoyancy eraser, which belongs to the technical field of eraser material processing and manufacturing and is mainly prepared from the following raw materials in parts by weight: 25-45 parts of polyvinyl chloride paste resin, 35-55 parts of plasticizer, 0.5-12 parts of expanding agent, 0.5-2 parts of stabilizer and 0.2 part of whitening agent-1.5 parts and 5-12 parts of light filler. Also provides a corresponding preparation method. The eraser prepared by the invention has flexible texture, light hand feeling, good character erasing and low density of about 0.6g/cm3The novel calligraphy brush has the advantages of being fluffy in texture, lighter in calligraphy wiping hand feeling, strong in floatability, capable of meeting the use requirements of users in all age groups, and high in interestingness and playability besides good practical performance.
Description
Technical Field
The invention belongs to the technical field of eraser material processing and manufacturing.
Background
The pencil lead contains a large amount of graphite, soft graphite leaves particles on paper through friction, the particles are only adsorbed on the surface of the paper, and handwriting can become fuzzy through repeated friction of external force. Prior to the eraser invention, people used crumb to erase the pencil writing, and as of 1770, England Engineer EdwardNaime had one time inadvertently picked up a piece of rubber as crumb and found it to work well, and began to produce and sell erasers.
Since the invention of the eraser in 1770, the technology of the eraser has been developed for a long time, and various kinds and purposes of erasers are developed. The rubber is mainly classified into PVC and TPR from the material viewpoint. The eraser can satisfy the normal erasing function, and the color, transparency and new erasing function are qualitatively developed. However, in the existing market, the eraser product has high density which is generally higher than that of water, so that the eraser product is heavy, small in size and heavy in erasing hand feeling, and is particularly not beneficial to being used by children under 9 years old.
Disclosure of Invention
The invention aims to provide a strong-buoyancy eraser and a corresponding preparation method thereof, and the invention is another aim of the invention.
Based on the purpose, the invention adopts the following technical scheme:
the strong buoyancy eraser is mainly prepared from the following raw materials in parts by weight: 25-45 parts of polyvinyl chloride paste resin, 35-55 parts of plasticizer, 0.5-12 parts of expanding agent, 0.5-2 parts of stabilizer, 0.2-1.5 parts of brightener and 5-12 parts of light filler.
The strong-buoyancy eraser is mainly prepared from the following raw materials in parts by weight: 30-40 parts of polyvinyl chloride paste resin, 40-50 parts of plasticizer, 1-10 parts of expanding agent, 0.6-1.2 parts of stabilizer, 0.3-0.8 part of brightener and 7-10 parts of light filler.
The expanding agent is an acrylic acid polymerization microsphere expanding agent.
The plasticizer is one or a mixture of more than two of tributyl citrate, octyl citrate and acetyl tributyl citrate.
The stabilizer is a mixture of zinc stearate, calcium stearate and stearic acid.
The mass ratio of the zinc stearate to the calcium stearate to the stearic acid is (1-2) to (1-2); the light filler is nano calcium carbonate; the brightener is a fluorescent brightener OB.
The method for preparing the strong buoyancy eraser comprises the following steps:
1) mixing materials: sequentially placing plasticizer, light filler, stabilizer and whitening agent into a reaction container at 70-85 deg.C, stirring for 20-40min, adding polyvinyl chloride paste resin and swelling agent, stirring to obtain paste, and taking out;
2) and (3) cooling: aging the slurry obtained in the step 1) for 3-5h to obtain powdery particles;
3) and (3) granulation: placing the powdery particles obtained in the step 2) into a granulator for granulation at the temperature of 100-120 ℃ to obtain a particle material;
4) and (4) extrusion molding.
Compared with the prior art, the invention has the following beneficial effects:
1) the polyvinyl chloride paste resin is the main material of the eraser, and is combined with a plasticizer, an expanding agent, a stabilizer, a whitening agent and a light filler to prepare the eraser with good word erasing performance;
2) the plasticizer is environment-friendly tributyl citrate, octyl citrate or acetyl tributyl citrate, and is combined with the polyvinyl chloride paste resin, so that on one hand, the plasticizer is environment-friendly, and on the other hand, the plasticizer has a good plasticizing function on the polyvinyl chloride paste resin; the acrylic acid polymerization microsphere expanding agent is a novel foaming product, the self volume of the expanding agent is expanded to more than several times to dozens of times of the original volume by heating, the core-shell structure can not be broken, the added expanding agent can ensure that the eraser product has fluffy texture, light hand feeling and is easier to erase words and eliminate words, the density of the product can be reduced to a great extent, and the density can be as low as 0.6g/cm3The product has strong buoyancy and can be suspended or floated in water or other solvents; the nano calcium carbonate is used as a product filler, the density of the product is low, the whiteness is high, the cost is low due to the addition of the nano calcium carbonate, the product has a friction feeling, and the character erasing and erasing performance is improved; the stabilizer is stearic acid, zinc stearate and calcium stearate, and is more environment-friendly than the traditional organic lead and organic zinc stabilizers which are added in a compounding wayThe phenomena of yellowing and aging of the product when the product is placed at high and low temperatures can be better prevented, and the performance of the eraser is more stable; the fluorescent whitening agent OB increases the whiteness of the eraser product;
the eraser prepared by the invention has flexible texture, light hand feeling, good character erasing and low density of about 0.6g/cm3The character-erasing hand feeling is lighter, the floating property is strong, the use of users in all age groups can be met, and the character-erasing hand feeling is high in interestingness and playability besides good practical performance;
3) the preparation method is simple, easy to operate, low in production cost and easy to popularize and apply.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a front view of embodiment 1 floating in water;
FIG. 2 is a side view of example 2 floating in water;
FIG. 3 is a top view of example 3 floating in water.
Detailed Description
The technical solution of the present invention will be described in detail below in order to make the objects, technical solutions and advantages of the present invention clearer, but the following embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Example 1
The strong buoyancy eraser is mainly prepared from the following raw materials in parts by weight: 35 parts of polyvinyl chloride paste resin, 46 parts of plasticizer (20 parts of tributyl citrate and 26 parts of octyl citrate), 10 parts of acrylic acid polymerization microsphere expanding agent, 0.6 part of stabilizer (0.2 part of zinc stearate, 0.2 part of calcium stearate and 0.2 part of stearic acid), 0.4 part of fluorescent whitening agent OB and 8 parts of nano calcium carbonate.
The method for preparing the strong buoyancy eraser comprises the following steps:
1) mixing materials: sequentially placing tributyl citrate, octyl citrate, nano calcium carbonate, stearic acid, zinc stearate, calcium stearate and a fluorescent whitening agent OB into a reaction vessel at the temperature of 80 ℃, stirring for 30min, adding polyvinyl chloride paste resin and an acrylic acid polymeric microsphere expanding agent, continuously stirring for about 10min until the slurry is pasty, and taking out;
2) and (3) cooling: aging the slurry obtained in the step 1) for 4 hours to obtain slurry which is naturally converted into powdery particles;
3) and (3) granulation: placing the powdery particles obtained in the step 2) into a granulator for granulation at 110 ℃ to obtain particle materials with the particle size of 3-5 mm;
4) extrusion molding: and (3) placing the particle material obtained in the step 3) into an extrusion molding machine for molding operation to obtain the eraser product.
Example 2
The strong buoyancy eraser is mainly prepared from the following raw materials in parts by weight: 40 parts of polyvinyl chloride paste resin, 46 parts of plasticizer (23 parts of tributyl citrate and 23 parts of acetyl tributyl citrate), 2 parts of acrylic acid polymerization microsphere expanding agent, 1.2 parts of stabilizer (0.4 part of zinc stearate, 0.4 part of calcium stearate and 0.4 part of stearic acid), 0.8 part of fluorescent whitening agent OB and 10 parts of nano calcium carbonate.
The preparation method of the embodiment refers to the embodiment 1.
Example 3
The strong buoyancy eraser is mainly prepared from the following raw materials in parts by weight: 38 parts of polyvinyl chloride paste resin, 48 parts of plasticizer (22 parts of octyl citrate and 26 parts of acetyl tributyl citrate), 5 parts of acrylic acid polymerization microsphere expanding agent, 0.7 part of stabilizer (0.3 part of zinc stearate, 0.2 part of calcium stearate and 0.2 part of stearic acid), 0.3 part of fluorescent whitening agent OB and 8 parts of nano calcium carbonate.
The preparation method of the embodiment refers to the embodiment 1.
Example 4
The strong buoyancy eraser is mainly prepared from the following raw materials in parts by weight: 30 parts of polyvinyl chloride paste resin, 50 parts of plasticizer (15 parts of tributyl citrate, 20 parts of octyl citrate and 15 parts of acetyl tributyl citrate), 8 parts of acrylic acid polymerization microsphere expanding agent, 1.2 parts of stabilizer (0.4 part of zinc stearate, 0.4 part of calcium stearate and 0.4 part of stearic acid), 0.8 part of fluorescent whitening agent OB and 10 parts of nano calcium carbonate.
The preparation method of the embodiment refers to the embodiment 1.
Example 5
The strong buoyancy eraser is mainly prepared from the following raw materials in parts by weight: 25 parts of polyvinyl chloride paste resin, 55 parts of plasticizer (55 parts of tributyl citrate), 12 parts of acrylic acid polymeric microsphere expanding agent, 0.8 part of stabilizer (0.2 part of zinc stearate, 0.2 part of calcium stearate and 0.4 part of stearic acid), 0.2 part of fluorescent whitening agent OB and 7 parts of nano calcium carbonate.
The method for preparing the strong buoyancy eraser comprises the following steps:
1) mixing materials: sequentially placing tributyl citrate, nano calcium carbonate, stearic acid, zinc stearate, calcium stearate and fluorescent whitening agent OB into a reaction vessel at 75 ℃, stirring for 40min, adding polyvinyl chloride paste resin and acrylic acid polymeric microsphere expanding agent, continuously stirring for about 10min until the slurry is pasty, and taking out;
2) and (3) cooling: aging the slurry obtained in the step 1) for 5 hours to obtain slurry which is naturally converted into powdery particles;
3) and (3) granulation: placing the powdery particles obtained in the step 2) into a granulator for granulation at 120 ℃ to obtain particle materials with the particle size of 3-5 mm;
4) extrusion molding: and (3) placing the particle material obtained in the step 3) into an extrusion molding machine for molding operation to obtain the eraser product.
Example 6
The strong buoyancy eraser is mainly prepared from the following raw materials in parts by weight: 45 parts of polyvinyl chloride paste resin, 39 parts of plasticizer (55 parts of octyl citrate), 1 part of acrylic acid polymerization microsphere expanding agent, 2 parts of stabilizer (0.8 part of zinc stearate, 0.6 part of calcium stearate and 0.6 part of stearic acid), 1 part of fluorescent whitening agent OB and 12 parts of nano calcium carbonate.
The preparation method of the embodiment refers to the embodiment 5.
Example 7 Performance testing
7.1 testing of appearance, hardness, etc
The eraser samples obtained in examples 1 to 6 were tested according to the test items and methods of (QB/T2309-2010) as follows.
Appearance: sensory examination in the bright spots.
Hardness: and (3) adopting a Shore hardness tester, enabling a pressing needle to vertically and lightly contact the surface of the pressed eraser test sample, immediately and correctly reading scales, testing at three different positions of each eraser test sample, and taking the average value of the scales as the hardness of the test sample.
Word elimination rate: the test is carried out according to the eraser erasure rate test method.
Mobility: a HB pencil conforming to QB/T2774-2006 was cut into 40mm long pieces, and two of these pencils were placed in parallel on a test piece having a length of 35mm, a width of 15mm or more and a thickness of 5mm or more (placed along the long side of the test piece). The pen was loaded with 0.2kg (0.196N) of load and placed in a thermostat at 60. + -. 2 ℃. After 60min, the pencil was taken out and visually inspected for migration if the coating adhered to the sample.
Yellowing performance: the eraser was baked in an oven at 50 ℃ for 7 days and observed for yellowing.
The test results are shown in table 1 below.
Table 1 examples 1-6 test results
The eraser prepared by the invention has flexible texture, light hand feeling, good character erasing and low density of about 0.6g/cm3The texture is fluffy, the hand feeling of character-erasing is lighter, the use of users in all ages can be satisfied, and besides good practical performance, the utility model also hasHigh interest and playability.
7.2 Floating Performance test
The eraser sample obtained in example 1 was selected and placed in a beaker containing water, and the floatability of the eraser sample was observed. Specific results are shown in FIGS. 1-3. Fig. 1 is a front view, fig. 2 is a side view, and fig. 3 is a plan view.
As shown in figures 1-3, the eraser prepared by the invention has low density, so that the eraser can be suspended or floated in water or other solvents and has strong floating force.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. The strong-buoyancy eraser is characterized by being mainly prepared from the following raw materials in parts by weight: 25-45 parts of polyvinyl chloride paste resin, 35-55 parts of plasticizer, 0.5-12 parts of expanding agent, 0.5-2 parts of stabilizer, 0.2-1.5 parts of brightener and 5-12 parts of light filler.
2. The strongly buoyant eraser according to claim 1, which is mainly prepared from the following raw materials in parts by weight: 30-40 parts of polyvinyl chloride paste resin, 40-50 parts of plasticizer, 1-10 parts of expanding agent, 0.6-1.2 parts of stabilizer, 0.3-0.8 part of brightener and 7-10 parts of light filler.
3. The strongly buoyant eraser according to claim 2, wherein said swelling agent is an acrylic polymeric microsphere swelling agent.
4. The strongly buoyant eraser according to claim 3, wherein said plasticizer is one or a mixture of more than two of tributyl citrate, octyl citrate, and acetyl tributyl citrate.
5. The strongly buoyant eraser according to claim 4, wherein said stabilizer is a mixture of zinc stearate, calcium stearate, stearic acid.
6. The strongly buoyant eraser according to claim 5, wherein said zinc stearate, calcium stearate, stearic acid are present in a mass ratio of (1-2) to (1-2); the light filler is nano calcium carbonate; the brightener is a fluorescent brightener OB.
7. The method of preparing a highly buoyant eraser according to any one of claims 1-6, comprising the steps of:
1) mixing materials: sequentially placing plasticizer, light filler, stabilizer and whitening agent into a reaction container at 70-85 deg.C, stirring for 20-40min, adding polyvinyl chloride paste resin and swelling agent, stirring to obtain paste, and taking out;
2) and (3) cooling: aging the slurry obtained in the step 1) for 3-5h to obtain powdery particles;
3) and (3) granulation: placing the powdery particles obtained in the step 2) into a granulator for granulation at the temperature of 100-120 ℃ to obtain a particle material;
4) and (4) extrusion molding.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101879831A (en) * | 2009-05-04 | 2010-11-10 | 重庆市永川区永双科技有限公司 | Manufacturing method of multifunctional eraser |
| CN102105311A (en) * | 2008-07-25 | 2011-06-22 | 株式会社种子 | Abrasive-containing eraser |
| JP2011251432A (en) * | 2010-05-31 | 2011-12-15 | Pentel Corp | Eraser composition |
| CN102660088A (en) * | 2012-05-06 | 2012-09-12 | 浦江县金太郎玩具有限公司 | Stretched noodle mud material and preparation method thereof |
| CN103087441A (en) * | 2011-11-01 | 2013-05-08 | 王丽 | Multifunctional eraser composition |
| CN106398048A (en) * | 2016-09-28 | 2017-02-15 | 上海兆方文具有限公司 | Eraser and composition thereof |
| CN106751143A (en) * | 2016-11-29 | 2017-05-31 | 金华博科彩泥技术研发有限公司 | Make clay of erasing rubber and preparation method thereof by oneself |
| CN110591250A (en) * | 2019-09-12 | 2019-12-20 | 宁波东胜橡胶制品有限公司 | PVC (polyvinyl chloride) foam material for sports shock pad and preparation process thereof |
-
2021
- 2021-11-23 CN CN202111427601.7A patent/CN113930034A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102105311A (en) * | 2008-07-25 | 2011-06-22 | 株式会社种子 | Abrasive-containing eraser |
| CN101879831A (en) * | 2009-05-04 | 2010-11-10 | 重庆市永川区永双科技有限公司 | Manufacturing method of multifunctional eraser |
| JP2011251432A (en) * | 2010-05-31 | 2011-12-15 | Pentel Corp | Eraser composition |
| CN103087441A (en) * | 2011-11-01 | 2013-05-08 | 王丽 | Multifunctional eraser composition |
| CN102660088A (en) * | 2012-05-06 | 2012-09-12 | 浦江县金太郎玩具有限公司 | Stretched noodle mud material and preparation method thereof |
| CN106398048A (en) * | 2016-09-28 | 2017-02-15 | 上海兆方文具有限公司 | Eraser and composition thereof |
| CN106751143A (en) * | 2016-11-29 | 2017-05-31 | 金华博科彩泥技术研发有限公司 | Make clay of erasing rubber and preparation method thereof by oneself |
| CN110591250A (en) * | 2019-09-12 | 2019-12-20 | 宁波东胜橡胶制品有限公司 | PVC (polyvinyl chloride) foam material for sports shock pad and preparation process thereof |
Non-Patent Citations (2)
| Title |
|---|
| 王志明编, 中国石化出版社 * |
| 陈登龙: "塑料橡皮擦的研制", 《中小企业科技》 * |
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Application publication date: 20220114 |