CN111205548A - Preparation process of transparent pearl foam cell foaming material - Google Patents
Preparation process of transparent pearl foam cell foaming material Download PDFInfo
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- CN111205548A CN111205548A CN202010148120.1A CN202010148120A CN111205548A CN 111205548 A CN111205548 A CN 111205548A CN 202010148120 A CN202010148120 A CN 202010148120A CN 111205548 A CN111205548 A CN 111205548A
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- 239000000463 material Substances 0.000 title claims abstract description 130
- 238000005187 foaming Methods 0.000 title claims abstract description 53
- 238000002360 preparation method Methods 0.000 title claims abstract description 41
- 210000000497 foam cell Anatomy 0.000 title abstract description 3
- 239000004088 foaming agent Substances 0.000 claims abstract description 98
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000006260 foam Substances 0.000 claims abstract description 31
- 238000001816 cooling Methods 0.000 claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 239000004202 carbamide Substances 0.000 claims abstract description 18
- 239000011265 semifinished product Substances 0.000 claims abstract description 16
- 238000000465 moulding Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000000748 compression moulding Methods 0.000 claims abstract description 6
- 239000002131 composite material Substances 0.000 claims description 20
- 238000005469 granulation Methods 0.000 claims description 13
- 230000003179 granulation Effects 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 239000002994 raw material Substances 0.000 claims description 11
- 239000003431 cross linking reagent Substances 0.000 claims description 10
- 239000006261 foam material Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 235000021355 Stearic acid Nutrition 0.000 claims description 7
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 7
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 7
- 239000008117 stearic acid Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 229920002943 EPDM rubber Polymers 0.000 claims description 4
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical group C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 3
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 3
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 claims description 3
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 claims description 3
- 229920006346 thermoplastic polyester elastomer Polymers 0.000 claims description 3
- 210000004027 cell Anatomy 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 4
- 230000005484 gravity Effects 0.000 abstract description 4
- 230000015556 catabolic process Effects 0.000 abstract description 3
- 238000006731 degradation reaction Methods 0.000 abstract description 3
- 239000012043 crude product Substances 0.000 abstract 1
- 235000013877 carbamide Nutrition 0.000 description 14
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000013012 foaming technology Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000642 polymer Polymers 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
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/107—Nitroso compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/104—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/18—Binary blends of expanding agents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/14—Peroxides
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/17—Amines; Quaternary ammonium compounds
- C08K5/19—Quaternary ammonium compounds
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- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention discloses a preparation process of a transparent pearl foam hole foaming material, which comprises the following steps: the method comprises the following steps: preparing a foaming agent, wherein the preparation of the foaming agent comprises the preparation of a foaming agent A material and the preparation of a foaming agent B material, and the step two is as follows: granulating the foaming material, and carrying out step three: forming a small foamed semi-finished product, and the fourth step: and C, putting the processed crude product obtained in the step three into a secondary compression molding machine, and molding the transparent pearl foam cell foaming material through two steps of heating and cooling. Compared with the prior art, the foaming agent consisting of urea and EVA is used as part of the foaming agent of the whole process, so that the degradation and use of the foaming agent H can be reduced, cells can not disappear when the foaming material is prepared, the specific gravity of the whole foaming material is lighter, the three-dimensional space of the internal structure of the transparent pearl cells is formed by mutually linking the materials, and the combination of a plurality of three-dimensional spaces has the effect of a spring, so that the resilience performance of the material can be effectively improved.
Description
Technical Field
The invention relates to the field of material preparation, in particular to a preparation process of a transparent pearl foam hole foaming material.
Background
With the development of foaming technology, EVA foaming materials are widely used in the fields of existing sports shoe materials, furniture, automobiles, toys for children, fitness equipment and the like. However, the existing EVA foaming material has a problem that the foaming agent is decomposed during foaming, so that the foam disappears, and thus the whole foaming material has a single appearance and poor uniqueness, and cannot be molded to have a unique appearance with transparent pearl cells. The present inventors have conducted intensive studies in order to obtain an effect that the appearance of the foamed material has transparent pearl cells, and thus have resulted from the present case.
Disclosure of Invention
In view of the above, the present invention aims to provide a process for preparing a transparent pearl cell foam material, which can make the cells of the foam material coarse, has unique transparent pearl cells in appearance, and has a light specific gravity.
In order to achieve the above purpose, the solution of the invention is: a preparation process of a transparent pearl foam hole foaming material comprises the following steps:
the method comprises the following steps: preparing a foaming agent, wherein the preparation of the foaming agent comprises the preparation of a foaming agent A material and the preparation of a foaming agent B material, wherein the preparation of the foaming agent A material comprises the steps of putting a foaming agent H and EVA with the VA content of 5-33% into an internal mixer according to the formula dosage, mixing to 120-130 ℃, pouring the materials after mixing, and putting the materials into a granulator for granulation to prepare a composite material with the particle size of 0.5-3mm, wherein the composite material is the foaming agent A material;
the preparation of the foaming agent B material is that urea and EVA with 5-33% of VA content are put into an internal mixer according to the formula dosage and are mixed to 120-130 ℃, the materials are poured after mixing, and then the materials are put into a granulator for granulation, so as to prepare the composite material with the particle size of 0.5-3mm, and the composite material is the foaming agent B material;
step two: granulating, namely putting the foaming agent A material in the step one, the foaming agent B material in the step one, an EVA raw material, stearic acid and a cross-linking agent into an internal mixer according to the formula dosage, mixing to 120-130 ℃, pouring the materials after mixing, and putting the materials into a granulator for granulation to manufacture a foaming material with the particle size of 0.5-3mm, wherein the EVA raw material is EVA or an EVA mixture with the VA content of 5-33%, the EVA mixture is a mixture of EVA with the VA content of 5-33% and one of POE, EPDM, SEBS, softening oil, TPEE and PE, and the EVA with the VA content of 5-33% in the foaming agent A material in the step one, the EVA with the VA content of 5-33% in the foaming agent B material in the step B and the EVA with the VA content of 5-33% in the step two all adopt the same raw material;
step three: forming the small foam semi-finished product, namely putting the foaming material in the step two into a small foam vulcanizing machine with the foaming ratio of 140-180%, wherein the temperature of the small foam vulcanizing machine is 165-210 ℃, performing foaming after vulcanizing for 3-12min, and cooling after foaming to obtain the small foam semi-finished product;
step four: and (4) secondary molding, namely putting the small-bubble foaming semi-finished product obtained in the step three into a secondary compression molding machine, and molding the transparent pearl bubble foaming material through two steps of heating and cooling.
The EVA is one of EVA with a VA content of 18%, EVA with a VA content of 26% and EVA with a VA content of 33%.
The weight ratio of the foaming agent H to the EVA in the foaming agent A material is 3-4: 6-7, and the total weight of the foaming agent H and the EVA in the foaming agent material A is 100 parts.
The weight ratio of urea to EVA in the foaming agent B is 1-2: 8 to 9, and the total weight of the urea and the EVA in the foaming agent B material is 100 parts.
In the fourth step, the heating temperature in the heating step is 165-210 ℃, the heating time is 3-12min, and the cooling step adopts water cooling, and the cooling time is 3-12 min.
The softening oil is naphthenic oil
The cross-linking agent is dicumyl peroxide or di-tert-butyl cumyl peroxide.
8.5 portions of foaming agent A and 30 portions of foaming agent B in the third step,
8.5 parts of foaming agent A, 30 parts of foaming agent B, 61.5 parts of EVA raw material, 0.4 part of stearic acid and 0.8 part of cross-linking agent.
After the technical scheme is adopted, the inventor researches to obtain the foaming agent consisting of urea and EVA as a part of the foaming agent in the whole process to reduce the degradation use of the foaming agent H, so that the foam holes do not disappear during the preparation of the foaming material to form the transparent pearl foam holes, the specific gravity of the whole foaming material is lighter due to the formation of the foam holes, the three-dimensional spaces of the internal structure of the transparent pearl foam holes are mutually linked by the material, and the combination of a plurality of three-dimensional spaces has the spring effect, so that the resilience performance of the material can be effectively improved.
Detailed Description
The invention relates to a preparation process of a transparent pearl foam hole foaming material, which comprises the following steps:
the method comprises the following steps: the preparation of the foaming agent comprises the preparation of a foaming agent A material and the preparation of a foaming agent B material, wherein the preparation of the foaming agent A material comprises the steps of putting a foaming agent H and EVA with 5-33% of VA content into an internal mixer according to the formula dosage, mixing to 120-130 ℃, pouring the materials after mixing, putting the materials into a granulator for granulation, and preparing a composite material with the particle size of 0.5-3mm, wherein the composite material is the foaming agent A material, and the weight part ratio of the foaming agent H to the EVA in the foaming agent A material is 3-4: 6-7, wherein the total weight of the foaming agent H and the EVA in the foaming agent material A is 100 parts;
the preparation of the foaming agent B material is that urea and EVA with 5-33% of VA content are put into an internal mixer according to the formula dosage and are mixed to 120-130 ℃, the materials are poured after mixing, and then the materials are put into a granulator for granulation, so as to prepare the composite material with the particle size of 0.5-3mm, wherein the composite material is the foaming agent B material, and the weight ratio of the urea to the EVA in the foaming agent B material is 1-2: 8-9, and the total weight of urea and EVA in the foaming agent B material is 100 parts;
step two: granulating, namely putting the foaming agent A material in the step one, the foaming agent B material in the step one, an EVA raw material, stearic acid and a cross-linking agent into an internal mixer according to the formula dosage, mixing to 120-130 ℃, pouring the materials after mixing, and putting the materials into a granulator for granulation to manufacture a foaming material with the particle size of 0.5-3mm, wherein the EVA raw material is EVA or an EVA mixture with the VA content of 5-33%, the EVA mixture is a mixture of EVA with the VA content of 5-33% and one of POE, EPDM, SEBS, softening oil, TPEE and PE, and the EVA with the VA content of 5-33% in the foaming agent A material in the step one, the EVA with the VA content of 5-33% in the foaming agent B material in the step B and the EVA with the VA content of 5-33% in the step two all adopt the same raw material; the EVA may be 18PHR EVA, 26PHR EVA produced by Taiwan plastic company, 26PHE EVA, 33PHREVA produced by Taiwan Asian polymer company, 18PHR EVA and 26PHR EVA produced by Yangzhi-Basff company;
step three: forming the small foam semi-finished product, namely putting the foaming material in the step two into a small foam vulcanizing machine with the foaming ratio of 140-180%, wherein the temperature of the small foam vulcanizing machine is 165-210 ℃, performing foaming after vulcanizing for 3-12min, and cooling after foaming to obtain the small foam semi-finished product;
step four: and (3) secondary molding, namely putting the small-bubble foamed semi-finished product obtained in the third step into a secondary compression molding machine, and molding the transparent pearl bubble foaming material through two steps of heating and cooling, wherein the heating temperature in the heating step is 165-210 ℃, the heating time is 3-12min, and the cooling step adopts water cooling and cooling, and the cooling time is 3-12 min.
According to the preparation process of the transparent pearl cell foaming material, the inventor researches to obtain the foaming agent consisting of urea and EVA as a partial foaming agent in the whole process to reduce the degradation and use of the foaming agent H, so that the cells can not disappear during the preparation of the foaming material to form the transparent pearl cells, the specific gravity of the whole foaming material is lighter due to the formation of the cells, the three-dimensional space of the internal structure of the transparent pearl cells is formed, the spaces are mutually linked by materials, and the combination of a plurality of three-dimensional spaces has the effect of a spring, so that the resilience performance of the material can be effectively improved.
In the invention, the softening oil is naphthenic oil of all types.
The cross-linking agent is dicumyl peroxide or di-tert-butyl cumyl peroxide.
Example one
The invention relates to a preparation process of a transparent pearl foam hole foaming material, which comprises the following steps:
the method comprises the following steps: preparing a foaming agent, wherein the preparation of the foaming agent comprises the preparation of a foaming agent A material and the preparation of a foaming agent B material, wherein the preparation of the foaming agent A material comprises the steps of putting 30 parts by weight of a foaming agent H and 70 parts by weight of EVA with 26% of VA content into an internal mixer for mixing to 120 ℃ and 130 ℃, pouring the materials after mixing, and putting the materials into a granulator for granulation to prepare a composite material with the particle size of 0.5-3mm, wherein the composite material is the foaming agent A material;
the preparation of the foaming agent B material is that 10 weight portions of urea (the urea is carbamide) and EVA with 26 percent of VA content are put into an internal mixer to be mixed to 120-130 ℃, the materials are poured after mixing, and then put into a granulator to be granulated, so as to produce the composite material with the grain size of 0.5-3mm, and the composite material is the foaming agent B material;
step two: granulating, namely putting 8.5 parts by weight of foaming agent A material, 30 parts by weight of foaming agent B material, 61.5 parts by weight of EVA with the VA content of 26%, 0.4 part by weight of stearic acid and 0.8 part by weight of cross-linking agent into an internal mixer for mixing to 120-130 ℃, pouring the materials after mixing, and putting the materials into a granulator for granulation to prepare a foaming material with the particle size of 0.5-3 mm;
step three: forming the small foam semi-finished product, namely putting the foaming material in the step two into a small foam vulcanizing machine with the foaming ratio of 140-180%, wherein the temperature of the small foam vulcanizing machine is 165-210 ℃, performing foaming after vulcanizing for 3-12min, and cooling after foaming to obtain the small foam semi-finished product;
step four: and (3) secondary molding, namely putting the small-bubble foamed semi-finished product obtained in the third step into a secondary compression molding machine, and molding the transparent pearl bubble foaming material through two steps of heating and cooling, wherein the heating temperature in the heating step is 165-210 ℃, the heating time is 3-12min, and the cooling step adopts water cooling and cooling, and the cooling time is 3-12 min.
Example two
The method comprises the following steps: preparing a foaming agent, wherein the preparation of the foaming agent comprises the preparation of a foaming agent A material and the preparation of a foaming agent B material, wherein the preparation of the foaming agent A material comprises the steps of putting 30 parts by weight of a foaming agent H and 70 parts by weight of EVA with 26% of VA content into an internal mixer for mixing to 120 ℃ and 130 ℃, pouring the materials after mixing, and putting the materials into a granulator for granulation to prepare a composite material with the particle size of 0.5-3mm, wherein the composite material is the foaming agent A material;
the preparation of the foaming agent B material is that 10 weight portions of urea (the urea is carbamide) and EVA with 26 percent of VA content are put into an internal mixer to be mixed to 120-130 ℃, the materials are poured after mixing, and then put into a granulator to be granulated, so as to produce the composite material with the grain size of 0.5-3mm, and the composite material is the foaming agent B material;
step two: granulating, namely putting 8.5 parts by weight of foaming agent A material, 30 parts by weight of foaming agent B material, 41.5 parts by weight of EVA with the VA content of 26%, 20 parts by weight of EPDM, 0.4 part by weight of stearic acid and 0.8 part by weight of cross-linking agent into an internal mixer together for mixing to 120-130 ℃, pouring the materials after mixing, and putting the materials into a granulator for granulation to prepare a foaming material with the particle size of 0.5-3 mm;
step three: forming the small foam semi-finished product, namely putting the foaming material in the step two into a small foam vulcanizing machine with the foaming ratio of 140-180%, wherein the temperature of the small foam vulcanizing machine is 165-210 ℃, performing foaming after vulcanizing for 3-12min, and cooling after foaming to obtain the small foam semi-finished product;
step four: and (3) secondary molding, namely putting the small-bubble foamed semi-finished product obtained in the third step into a secondary compression molding machine, and molding the transparent pearl bubble foaming material through two steps of heating and cooling, wherein the heating temperature in the heating step is 165-210 ℃, the heating time is 3-12min, and the cooling step adopts water cooling and cooling, and the cooling time is 3-12 min.
The above embodiments are not intended to limit the scope of the present invention, and any suitable changes or modifications made by those skilled in the art should be construed as not departing from the scope of the present invention.
Claims (8)
1. A preparation process of a transparent pearl foam hole foaming material is characterized by comprising the following steps: the preparation method comprises the following steps:
the method comprises the following steps: preparing a foaming agent, wherein the preparation of the foaming agent comprises the preparation of a foaming agent A material and the preparation of a foaming agent B material, wherein the preparation of the foaming agent A material comprises the steps of putting a foaming agent H and EVA with the VA content of 5-33% into an internal mixer according to the formula dosage, mixing to 120-130 ℃, pouring the materials after mixing, and putting the materials into a granulator for granulation to prepare a composite material with the particle size of 0.5-3mm, wherein the composite material is the foaming agent A material;
the preparation of the foaming agent B material is that urea and EVA with 5-33% of VA content are put into an internal mixer according to the formula dosage and are mixed to 120-130 ℃, the materials are poured after mixing, and then the materials are put into a granulator for granulation, so as to prepare the composite material with the particle size of 0.5-3mm, and the composite material is the foaming agent B material;
step two: granulating, namely putting the foaming agent A material in the step one, the foaming agent B material in the step one, an EVA raw material, stearic acid and a cross-linking agent into an internal mixer according to the formula dosage, mixing to 120-130 ℃, pouring the materials after mixing, and putting the materials into a granulator for granulation to manufacture a foaming material with the particle size of 0.5-3mm, wherein the EVA raw material is EVA or an EVA mixture with the VA content of 5-33%, the EVA mixture is a mixture of EVA with the VA content of 5-33% and one of POE, EPDM, SEBS, softening oil, TPEE and PE, and the EVA with the VA content of 5-33% in the foaming agent A material in the step one, the EVA with the VA content of 5-33% in the foaming agent B material in the step B and the EVA with the VA content of 5-33% in the step two all adopt the same raw material;
step three: forming the small foam semi-finished product, namely putting the foaming material in the step two into a small foam vulcanizing machine with the foaming ratio of 140-180%, wherein the temperature of the small foam vulcanizing machine is 165-210 ℃, performing foaming after vulcanizing for 3-12min, and cooling after foaming to obtain the small foam semi-finished product;
step four: and (4) secondary molding, namely putting the small-bubble foaming semi-finished product obtained in the step three into a secondary compression molding machine, and molding the transparent pearl bubble foaming material through two steps of heating and cooling.
2. The process for preparing a transparent pearl cell foam material according to claim 1, wherein: the EVA is one of EVA with a VA content of 18%, EVA with a VA content of 26% and EVA with a VA content of 33%.
3. The process for preparing a transparent pearl cell foam material according to claim 1, wherein: the weight ratio of the foaming agent H to the EVA in the foaming agent A material is 3-4: 6-7, and the total weight of the foaming agent H and the EVA in the foaming agent material A is 100 parts.
4. The process for preparing a transparent pearl cell foam material according to claim 1, wherein: the weight ratio of urea to EVA in the foaming agent B is 1-2: 8 to 9, and the total weight of the urea and the EVA in the foaming agent B material is 100 parts.
5. The process for preparing a transparent pearl cell foam material according to claim 1, wherein: in the fourth step, the heating temperature in the heating step is 165-210 ℃, the heating time is 3-12min, and the cooling step adopts water cooling, and the cooling time is 3-12 min.
6. The process for preparing a transparent pearl cell foam material according to claim 1, wherein: the softening oil is naphthenic oil.
7. The process for preparing a transparent pearl cell foam material according to claim 1, wherein: the cross-linking agent is dicumyl peroxide or di-tert-butyl cumyl peroxide.
8. The process for preparing a transparent pearl cell foam material according to claim 1, wherein: 8.5 parts of foaming agent A, 30 parts of foaming agent B, 61.5 parts of EVA raw material, 0.4 part of stearic acid and 0.8 part of cross-linking agent.
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| CN202010148120.1A CN111205548A (en) | 2020-03-05 | 2020-03-05 | Preparation process of transparent pearl foam cell foaming material |
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| CN202010148120.1A CN111205548A (en) | 2020-03-05 | 2020-03-05 | Preparation process of transparent pearl foam cell foaming material |
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| CN108976583A (en) * | 2018-06-28 | 2018-12-11 | 黎明职业大学 | A kind of footwear material ultralight foam composite material and preparation method thereof |
| CN110483879A (en) * | 2019-09-04 | 2019-11-22 | 安踏（中国）有限公司 | Bottom material, preparation method and sport footwear in a kind of high bradyseism macropore foaming |
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2020
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108976583A (en) * | 2018-06-28 | 2018-12-11 | 黎明职业大学 | A kind of footwear material ultralight foam composite material and preparation method thereof |
| CN110483879A (en) * | 2019-09-04 | 2019-11-22 | 安踏（中国）有限公司 | Bottom material, preparation method and sport footwear in a kind of high bradyseism macropore foaming |
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