CN109651689A - A kind of toy case material and preparation method thereof that mechanical property is controllable - Google Patents
A kind of toy case material and preparation method thereof that mechanical property is controllable Download PDFInfo
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- CN109651689A CN109651689A CN201811330744.4A CN201811330744A CN109651689A CN 109651689 A CN109651689 A CN 109651689A CN 201811330744 A CN201811330744 A CN 201811330744A CN 109651689 A CN109651689 A CN 109651689A
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- 239000000463 material Substances 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title abstract description 13
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 84
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 42
- 239000000314 lubricant Substances 0.000 claims abstract description 26
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 21
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims abstract description 20
- 238000003756 stirring Methods 0.000 claims description 66
- 238000001746 injection moulding Methods 0.000 claims description 40
- 239000011257 shell material Substances 0.000 claims description 39
- 239000002245 particle Substances 0.000 claims description 38
- 238000002347 injection Methods 0.000 claims description 24
- 239000007924 injection Substances 0.000 claims description 24
- 238000001816 cooling Methods 0.000 claims description 23
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 19
- 239000003292 glue Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 10
- 239000008187 granular material Substances 0.000 claims description 7
- 239000004615 ingredient Substances 0.000 abstract 2
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 210000003278 egg shell Anatomy 0.000 description 20
- 102000002322 Egg Proteins Human genes 0.000 description 16
- 108010000912 Egg Proteins Proteins 0.000 description 16
- 241000283690 Bos taurus Species 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 8
- 230000012447 hatching Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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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
- 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
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
-
- 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
- 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
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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)
- Cosmetics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Toys (AREA)
Abstract
The invention discloses a kind of toy case materials that mechanical property is controllable, are prepared by component A and component B；The weight ratio of component A and component B is 1:0.8-1.2；Wherein, component A includes the following ingredient based on mass percentage: EVA 18-22%, zinc stearate 2-4%, calcium carbonate 74-80%；Component B includes the following ingredient based on mass percentage: calcium carbonate 42-48%, silica 24-30%, lubricant 8-12%, EVA 18-22%.The invention also discloses a kind of preparation methods of toy case material that mechanical property is controllable.Toy case material of the invention both be easy beaten it is broken, packed products during transportation again be not easy to split, break into pieces after and do not have cusp sharp edge, not will cause children scuffing.
Description
Technical Field
The invention relates to a toy shell material, in particular to a toy shell material with controllable mechanical properties and a preparation method thereof.
Background
The toy eggshell is a toy which can enable children to experience the egg hatching process, has mysterious colors and can fully arouse the desire of children to find out. The toy eggshell is hermetically packaged before hatching, and during hatching, hatching needs more than 10 minutes (namely, the inner wall of the eggshell is beaten by the doll inside the eggshell by applying external force), so that the shell of the toy eggshell is gradually broken, and the doll hidden inside the shell is exposed. However, the prior art toy shell materials suffer from the following disadvantages: the shell is difficult to knock, the shell cannot be broken after the shell is knocked for half an hour, the shell is easy to burst when a simulated transportation test is carried out, and fragments after bursting are sharp, so that children are easy to scratch.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the toy shell material with controllable mechanical properties, the toy shell material is easy to knock and break, the packaged finished product is not easy to crack in the transportation process, and no sharp point or edge exists after knocking and no scratch is caused to children.
The invention also aims to provide a preparation method of the toy shell material with controllable mechanical properties.
One of the purposes of the invention is realized by adopting the following technical scheme:
a toy shell material with controllable mechanical properties is characterized by being prepared from a component A and a component B; the weight ratio of the component A to the component B is 1: 0.8-1.2; wherein,
the component A comprises the following components in percentage by mass: 18-22% of EVA, 2-4% of zinc stearate and 74-80% of calcium carbonate;
the component B comprises the following components in percentage by mass: 42-48% of calcium carbonate, 24-30% of silicon oxide, 8-12% of lubricant and 18-22% of EVA.
Further, the weight ratio of component a to component B was 1:1.
Further, the component A comprises the following components in percentage by mass: EVA 20%, zinc stearate 3%, and calcium carbonate 77%.
Further, the component B comprises the following components in percentage by mass: 45% of calcium carbonate, 25% of silicon oxide, 10% of lubricant and 20% of EVA.
Further, in component B, the lubricant is an EVA3 wax lubricant.
The second purpose of the invention is realized by adopting the following technical scheme:
a preparation method of a toy shell material with controllable mechanical properties is characterized by comprising the following steps:
granulating the component A: adding EVA, zinc stearate and calcium carbonate in a formula ratio into a mixer, uniformly stirring, pouring into an extruder, extruding and bracing, cooling, and cutting into particles to obtain particles A;
granulating the component B: filling the calcium carbonate, the silicon oxide, the lubricant and the EVA into a mixer according to the formula ratio, uniformly stirring, pouring into an extruder, extruding and bracing, cooling, and cutting into particles to obtain particles B;
injection molding: adding the granules A and the granules B into a mixer according to the formula ratio, uniformly stirring, pouring into an injection molding machine, and performing injection molding to obtain the toy shell material with controllable mechanical properties.
Further, in the step of granulating the component A, controlling the stirring speed of a mixer to be 50-200r/min and the stirring time to be 8-12 minutes; the temperature of the extruder in zone 1 is controlled to 210 ℃, the temperature of zone 2 is controlled to 200 ℃, and the temperature of zone 3 is controlled to 195 ℃.
Further, in the step of granulating the component B, the stirring speed of a mixer is controlled to be 50-200r/min, and the stirring time is controlled to be 8-12 minutes; the temperature of the extruder in zone 1 is controlled to 210 ℃, the temperature of zone 2 is controlled to 200 ℃, and the temperature of zone 3 is controlled to 195 ℃.
Further, in the step of injection molding, the stirring speed of the mixer is controlled to be 50-200r/min, and the stirring time is controlled to be 15-20 minutes.
Further, in the injection molding step, the parameters of the injection molding machine are as follows: three-stage glue injection is adopted, the glue injection time is 3S, the cooling time is 25S, and the temperature from the gun barrel to the injection nozzle is 188-.
The invention has the beneficial effects that:
1. the component B of the toy shell material comprises calcium carbonate, silicon oxide, a lubricant and EVA, wherein the calcium carbonate belongs to the safest and most stable powder material, and the calcium carbonate is easy to be powdered and not easy to be molded, so that the calcium carbonate is combined with the EVA material with extremely high toughness and good elasticity, and the molding is convenient; meanwhile, in order to increase brittleness, silicon oxide is required to be matched, a proper amount of lubricant is added for mixing, the raw materials can be tightly combined together through granulation, and finally, the raw materials are mixed with the component A according to a specific proportion and are subjected to injection molding to obtain a toy shell material with controllable mechanical properties; the toy shell material is easy to knock and break, the packaged finished product is not easy to crack in the transportation process, and no sharp point or edge exists after knocking and breaking, so that children cannot be scratched. The toy shell material of the invention can crack in about 10 minutes when knocked down by external force of 14-18 cattle.
2. The preparation method of the invention optimizes the technological parameters aiming at the formula of the toy shell material and shortens the injection molding period.
Drawings
Fig. 1 is a photograph of an eggshell made of the toy shell material of example 1 after being continuously beaten for 8.5 minutes by an external force of 15 cows;
fig. 2 is a photograph of an eggshell made of the toy shell material of comparative example 1 after being continuously beaten for 30 minutes by an external force of 15 cattle.
Detailed Description
The present invention is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.
A toy shell material with controllable mechanical properties is prepared from a component A and a component B; the weight ratio of the component A to the component B is 1: 0.8-1.2; wherein,
the component A comprises the following components in percentage by mass: 18-22% of EVA, 2-4% of zinc stearate and 74-80% of calcium carbonate;
the component B comprises the following components in percentage by mass: 42-48% of calcium carbonate, 24-30% of silicon oxide, 8-12% of lubricant and 18-22% of EVA.
As a further embodiment, the weight ratio of component a to component B is 1:1.
As a further embodiment, the component A comprises the following components in percentage by mass: EVA 20%, zinc stearate 3%, and calcium carbonate 77%.
As a further embodiment, the component B comprises the following components in percentage by mass: 45% of calcium carbonate, 25% of silicon oxide, 10% of lubricant and 20% of EVA.
As a further embodiment, in component B, the lubricant is an EVA3 wax lubricant.
A preparation method of a toy shell material with controllable mechanical properties comprises the following steps:
granulating the component A: adding EVA, zinc stearate and calcium carbonate in a formula ratio into a mixer, uniformly stirring, pouring into an extruder, extruding and bracing, cooling, and cutting into particles to obtain particles A;
granulating the component B: filling the calcium carbonate, the silicon oxide, the lubricant and the EVA into a mixer according to the formula ratio, uniformly stirring, pouring into an extruder, extruding and bracing, cooling, and cutting into particles to obtain particles B;
injection molding: adding the granules A and the granules B into a mixer according to the formula ratio, uniformly stirring, pouring into an injection molding machine, and performing injection molding to obtain the toy shell material with controllable mechanical properties.
In the step of granulating the component A, controlling the stirring speed of a mixer to be 50-200r/min and the stirring time to be 10 minutes; the temperature of the extruder in zone 1 is controlled to 210 ℃, the temperature of zone 2 is controlled to 200 ℃, and the temperature of zone 3 is controlled to 195 ℃.
In the step of granulating the component B, controlling the stirring speed of a mixer to be 50-200r/min and the stirring time to be 10 minutes; the temperature of the extruder in zone 1 is controlled to 210 ℃, the temperature of zone 2 is controlled to 200 ℃, and the temperature of zone 3 is controlled to 195 ℃.
In a further embodiment, in the injection molding step, the stirring speed of the mixer is controlled to be 50-200r/min, and the stirring time is controlled to be 15-20 minutes.
As a further embodiment, in the injection molding step, the parameters of the injection molding machine are as follows: three-stage glue injection is adopted, the glue injection time is 3S, the cooling time is 25S, and the temperature from the gun barrel to the injection nozzle is 188-.
The following are specific examples of the present invention, and raw materials, equipments and the like used in the following examples can be obtained by purchasing them unless otherwise specified.
Example 1:
a toy shell material with controllable mechanical properties is prepared from a component A and a component B; the weight ratio of the component A to the component B is 1: 1; wherein,
the component A comprises the following components in percentage by mass: 20% of EVA, 3% of zinc stearate and 77% of calcium carbonate;
the component B comprises the following components in percentage by mass: 45% of calcium carbonate, 25% of silicon oxide, 10% of lubricant and 20% of EVA.
A preparation method of a toy shell material with controllable mechanical properties comprises the following steps:
granulating the component A: adding EVA, zinc stearate and calcium carbonate in a formula ratio into a mixer, uniformly stirring, pouring into an extruder, extruding and bracing, cooling, and cutting into particles to obtain particles A; controlling the stirring speed of the mixer to be 100r/min, and the stirring time to be 10 minutes; controlling the temperature of a zone 1 of the extruder to be 210 ℃, the temperature of a zone 2 to be 200 ℃ and the temperature of a zone 3 to be 195 ℃;
granulating the component B: filling the calcium carbonate, the silicon oxide, the lubricant and the EVA into a mixer according to the formula ratio, uniformly stirring, pouring into an extruder, extruding and bracing, cooling, and cutting into particles to obtain particles B; controlling the stirring speed of the mixer to be 100r/min, and the stirring time to be 10 minutes; controlling the temperature of a zone 1 of the extruder to be 210 ℃, the temperature of a zone 2 to be 200 ℃ and the temperature of a zone 3 to be 195 ℃;
injection molding: adding the particles A and the particles B into a mixer according to the formula ratio, uniformly stirring, and controlling the stirring speed of the mixer to be 100r/min and the stirring time to be 18 minutes; then pouring the mixture into an injection molding machine for injection molding, wherein the parameters of the injection molding machine are as follows: and (3) adopting three-stage glue injection, wherein the glue injection time is 3S, the cooling time is 25S, and the temperature from the gun barrel to the injection nozzle is 188-.
Example 2:
a preparation method of a toy shell material with controllable mechanical properties is prepared from a component A and a component B; the weight ratio of the component A to the component B is 1: 0.8; wherein,
the component A comprises the following components in percentage by mass: 18% of EVA, 2% of zinc stearate and 80% of calcium carbonate;
the component B comprises the following components in percentage by mass: 42% of calcium carbonate, 24% of silicon oxide, 12% of lubricant and 22% of EVA.
A toy shell material with controllable mechanical properties, comprising:
granulating the component A: adding EVA, zinc stearate and calcium carbonate in a formula ratio into a mixer, uniformly stirring, pouring into an extruder, extruding and bracing, cooling, and cutting into particles to obtain particles A; controlling the stirring speed of the mixer to be 200r/min, and the stirring time to be 8 minutes; controlling the temperature of a zone 1 of the extruder to be 210 ℃, the temperature of a zone 2 to be 200 ℃ and the temperature of a zone 3 to be 195 ℃;
granulating the component B: filling the calcium carbonate, the silicon oxide, the lubricant and the EVA into a mixer according to the formula ratio, uniformly stirring, pouring into an extruder, extruding and bracing, cooling, and cutting into particles to obtain particles B; controlling the stirring speed of the mixer to be 200r/min, and the stirring time to be 8 minutes; controlling the temperature of a zone 1 of the extruder to be 210 ℃, the temperature of a zone 2 to be 200 ℃ and the temperature of a zone 3 to be 195 ℃;
injection molding: adding the particles A and the particles B into a mixer according to the formula ratio, uniformly stirring, and controlling the stirring speed of the mixer to be 200r/min and the stirring time to be 15 minutes; then pouring the mixture into an injection molding machine for injection molding, wherein the parameters of the injection molding machine are as follows: and (3) adopting three-stage glue injection, wherein the glue injection time is 3S, the cooling time is 25S, and the temperature from the gun barrel to the injection nozzle is 188-.
Example 3:
a toy shell material with controllable mechanical properties is prepared from a component A and a component B; the weight ratio of the component A to the component B is 1: 1.2; wherein,
the component A comprises the following components in percentage by mass: 22% of EVA, 4% of zinc stearate and 74% of calcium carbonate;
the component B comprises the following components in percentage by mass: 48% of calcium carbonate, 24% of silicon oxide, 10% of lubricant and 18% of EVA.
A preparation method of a toy shell material with controllable mechanical properties comprises the following steps:
granulating the component A: adding EVA, zinc stearate and calcium carbonate in a formula ratio into a mixer, uniformly stirring, pouring into an extruder, extruding and bracing, cooling, and cutting into particles to obtain particles A; controlling the stirring speed of the mixer to be 50r/min, and the stirring time to be 12 minutes; controlling the temperature of a zone 1 of the extruder to be 210 ℃, the temperature of a zone 2 to be 200 ℃ and the temperature of a zone 3 to be 195 ℃;
granulating the component B: filling the calcium carbonate, the silicon oxide, the lubricant and the EVA into a mixer according to the formula ratio, uniformly stirring, pouring into an extruder, extruding and bracing, cooling, and cutting into particles to obtain particles B; controlling the stirring speed of the mixer to be 50r/min, and the stirring time to be 12 minutes; controlling the temperature of a zone 1 of the extruder to be 210 ℃, the temperature of a zone 2 to be 200 ℃ and the temperature of a zone 3 to be 195 ℃;
injection molding: adding the particles A and the particles B into a mixer according to the formula ratio, uniformly stirring, and controlling the stirring speed of the mixer to be 50r/min and the stirring time to be 20 minutes; then pouring the mixture into an injection molding machine for injection molding, wherein the parameters of the injection molding machine are as follows: and (3) adopting three-stage glue injection, wherein the glue injection time is 3S, the cooling time is 25S, and the temperature from the gun barrel to the injection nozzle is 188-.
Example 4:
a toy shell material with controllable mechanical properties is prepared from a component A and a component B; the weight ratio of the component A to the component B is 1: 1.1; wherein,
the component A comprises the following components in percentage by mass: 20% of EVA, 4% of zinc stearate and 76% of calcium carbonate;
the component B comprises the following components in percentage by mass: 45% of calcium carbonate, 25% of silicon oxide, 10% of lubricant and 20% of EVA.
A preparation method of a toy shell material with controllable mechanical properties comprises the following steps:
granulating the component A: adding EVA, zinc stearate and calcium carbonate in a formula ratio into a mixer, uniformly stirring, pouring into an extruder, extruding and bracing, cooling, and cutting into particles to obtain particles A; controlling the stirring speed of the mixer to be 100r/min, and the stirring time to be 10 minutes; controlling the temperature of a zone 1 of the extruder to be 210 ℃, the temperature of a zone 2 to be 200 ℃ and the temperature of a zone 3 to be 195 ℃;
granulating the component B: filling the calcium carbonate, the silicon oxide, the lubricant and the EVA into a mixer according to the formula ratio, uniformly stirring, pouring into an extruder, extruding and bracing, cooling, and cutting into particles to obtain particles B; controlling the stirring speed of the mixer to be 100r/min, and the stirring time to be 10 minutes; controlling the temperature of a zone 1 of the extruder to be 210 ℃, the temperature of a zone 2 to be 200 ℃ and the temperature of a zone 3 to be 195 ℃;
injection molding: adding the particles A and the particles B into a mixer according to the formula ratio, uniformly stirring, and controlling the stirring speed of the mixer to be 100r/min and the stirring time to be 18 minutes; then pouring the mixture into an injection molding machine for injection molding, wherein the parameters of the injection molding machine are as follows: and (3) adopting three-stage glue injection, wherein the glue injection time is 3S, the cooling time is 25S, and the temperature from the gun barrel to the injection nozzle is 188-.
Comparative example 1:
a toy shell material is prepared from a component A; wherein the component A comprises the following components in percentage by mass: EVA 20%, zinc stearate 3%, and calcium carbonate 77%.
A preparation method of a toy shell material with controllable mechanical properties comprises the following steps:
granulating the component A: adding EVA, zinc stearate and calcium carbonate in a formula ratio into a mixer, uniformly stirring, pouring into an extruder, extruding and bracing, cooling, and cutting into particles to obtain particles A; controlling the stirring speed of the mixer to be 100r/min, and the stirring time to be 10 minutes; controlling the temperature of a zone 1 of the extruder to be 210 ℃, the temperature of a zone 2 to be 200 ℃ and the temperature of a zone 3 to be 195 ℃;
injection molding: pouring the granules A into an injection molding machine according to the formula ratio for injection molding, wherein the injection molding machine has the following parameters: and (3) adopting three-stage glue injection, wherein the glue injection time is 3S, the cooling time is 25S, and the temperature from the gun barrel to the injection nozzle is 188-.
And (3) performance testing:
1. according to the requirements of products, the toy shell materials of the examples 1-4 and the comparative example 1 are manufactured into an eggshell shape, a doll is placed in the eggshell, the doll starts to hatch after being triggered, the doll continuously rotates, a doll mouth can provide 14.7-18 cattle force to stretch and beat the eggshell for a period of time, and the hatching process is completed after the eggshell bursts. The test results are shown in Table 1.
TABLE 1
| Item | Applied force | Time of day | Cracking of egg shell |
| Example 1 | 15 cattle | 8.5 minutes | Complete splitting |
| Example 2 | 15 cattle | 9 minutes | Complete splitting |
| Example 3 | 15 cattle | 10 minutes | Complete splitting |
| Example 4 | 15 cattle | 9.5 minutes | Complete splitting |
| Comparative example 1 | 15 cattle | 30 minutes | Not cracked |
As can be seen from table 1, the eggshells of examples 1-4 according to the present invention are more easily broken by beating than the eggshells of comparative example 1, wherein the effect of example 1 is the best.
As can be seen from fig. 1, the eggshell of example 1 is broken after the external force of 15 cows is continuously beaten for 8.5 minutes, and no sharp points or edges exist after the breaking, so that the eggshell cannot be scratched by children.
As can be seen from fig. 2, the eggshell of comparative example 1 did not crack after the external force of 15 cows was continuously tapped for 30 minutes.
2. After the material meets the functional requirements, the packaged finished product can not crack and be damaged in the transportation process. The detection method is a simulated transportation test: the rotation speed of 220 r/min is one hour, and the rotation speed of 220 r/min is one hour. The packaged whole box of product then needs to throw a test out of 6 sides of a corner. The results are shown in Table 2.
TABLE 2
| Item | Cracking of egg shell |
| Example 1 | Intact and nondestructive |
| Example 2 | Intact and nondestructive |
| Example 3 | Intact and nondestructive |
| Example 4 | Intact and nondestructive |
| Comparative example 1 | With cracks |
As can be seen from table 2, the eggshells of comparative example 1 were hard but not sufficiently tough and had cracks, whereas the eggshells of inventive examples 1-4 were intact.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
1. A toy shell material with controllable mechanical properties is characterized by being prepared from a component A and a component B; the weight ratio of the component A to the component B is 1: 0.8-1.2; wherein,
the component A comprises the following components in percentage by mass: 18-22% of EVA, 2-4% of zinc stearate and 74-80% of calcium carbonate;
the component B comprises the following components in percentage by mass: 42-48% of calcium carbonate, 24-30% of silicon oxide, 8-12% of lubricant and 18-22% of EVA.
2. A toy casing material with controlled mechanical properties according to claim 1, characterised in that the weight ratio of component A to component B is 1:1.
3. A toy casing material with controllable mechanical properties according to claim 1, wherein component A comprises the following components in percentage by mass: EVA 20%, zinc stearate 3%, and calcium carbonate 77%.
4. A toy casing material with controllable mechanical properties according to claim 1, wherein component B comprises the following components in percentage by mass: 45% of calcium carbonate, 25% of silicon oxide, 10% of lubricant and 20% of EVA.
5. A toy casing material with controlled mechanical properties according to claim 1, characterised in that in component B the lubricant is EVA3 wax lubricant.
6. A method for preparing a toy casing material with controllable mechanical properties according to any one of claims 1 to 5, comprising:
granulating the component A: adding EVA, zinc stearate and calcium carbonate in a formula ratio into a mixer, uniformly stirring, pouring into an extruder, extruding and bracing, cooling, and cutting into particles to obtain particles A;
granulating the component B: filling the calcium carbonate, the silicon oxide, the lubricant and the EVA into a mixer according to the formula ratio, uniformly stirring, pouring into an extruder, extruding and bracing, cooling, and cutting into particles to obtain particles B;
injection molding: adding the granules A and the granules B into a mixer according to the formula ratio, uniformly stirring, pouring into an injection molding machine, and performing injection molding to obtain the toy shell material with controllable mechanical properties.
7. The method for preparing a toy casing material with controllable mechanical properties according to claim 6, wherein in the step of granulating the component A, the stirring speed of a mixer is controlled to be 50-200r/min, and the stirring time is controlled to be 8-12 minutes; the temperature of the extruder in zone 1 is controlled to 210 ℃, the temperature of zone 2 is controlled to 200 ℃, and the temperature of zone 3 is controlled to 195 ℃.
8. The method for preparing a material for toy shells with controllable mechanical properties as claimed in claim 6, wherein in the step of granulating the component B, the stirring speed of the mixer is controlled to be 50-200r/min, and the stirring time is controlled to be 8-12 minutes; the temperature of the extruder in zone 1 is controlled to 210 ℃, the temperature of zone 2 is controlled to 200 ℃, and the temperature of zone 3 is controlled to 195 ℃.
9. The method for preparing a material for a toy casing with controlled mechanical properties according to claim 6, wherein in the step of injection molding, the stirring speed of the mixer is controlled to be 50-200r/min, and the stirring time is controlled to be 15-20 minutes.
10. The method for preparing a toy casing material with controllable mechanical properties according to claim 6, wherein in the step of injection molding, the parameters of an injection molding machine are as follows: three-stage glue injection is adopted, the glue injection time is 3S, the cooling time is 25S, and the temperature from the gun barrel to the injection nozzle is 188-.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811330744.4A CN109651689A (en) | 2018-11-09 | 2018-11-09 | A kind of toy case material and preparation method thereof that mechanical property is controllable |
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| CN201811330744.4A CN109651689A (en) | 2018-11-09 | 2018-11-09 | A kind of toy case material and preparation method thereof that mechanical property is controllable |
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| CN201811330744.4A Pending CN109651689A (en) | 2018-11-09 | 2018-11-09 | A kind of toy case material and preparation method thereof that mechanical property is controllable |
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| US20170106299A1 (en) * | 2015-10-15 | 2017-04-20 | Spin Master Ltd. | Assembly with toy character in housing |
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| JP2018104671A (en) * | 2016-12-27 | 2018-07-05 | スピン・マスター・リミテッド | Object in housing, and assembly having mechanism for releasing housing |
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| CN1872909A (en) * | 2006-06-27 | 2006-12-06 | 上海应用技术学院 | All-purpose fire resistant polypropylene, and preparation method |
| CN102634109A (en) * | 2012-05-08 | 2012-08-15 | 浦江县金太郎玩具有限公司 | Expanding material for manufacturing expansion toy and manufacturing method of expanding material for manufacturing expansion toy |
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Application publication date: 20190419 |