CN109664561B - High-flame-retardancy conductive foam back adhesive and preparation process thereof - Google Patents
High-flame-retardancy conductive foam back adhesive and preparation process thereof Download PDFInfo
- Publication number
- CN109664561B CN109664561B CN201811541848.XA CN201811541848A CN109664561B CN 109664561 B CN109664561 B CN 109664561B CN 201811541848 A CN201811541848 A CN 201811541848A CN 109664561 B CN109664561 B CN 109664561B
- Authority
- CN
- China
- Prior art keywords
- conductive
- foam
- layer
- flame
- portions
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000006260 foam Substances 0.000 title claims abstract description 310
- 239000000853 adhesive Substances 0.000 title claims abstract description 83
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 83
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000000758 substrate Substances 0.000 claims abstract description 55
- 239000000203 mixture Substances 0.000 claims abstract description 20
- 239000003063 flame retardant Substances 0.000 claims description 136
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 133
- 239000011148 porous material Substances 0.000 claims description 105
- 239000000463 material Substances 0.000 claims description 92
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 89
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 89
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 88
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 88
- 239000000843 powder Substances 0.000 claims description 84
- 238000004026 adhesive bonding Methods 0.000 claims description 83
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims description 74
- 239000002245 particle Substances 0.000 claims description 70
- 229910052782 aluminium Inorganic materials 0.000 claims description 61
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 61
- 239000004744 fabric Substances 0.000 claims description 61
- 239000011888 foil Substances 0.000 claims description 61
- 238000003756 stirring Methods 0.000 claims description 61
- 239000002699 waste material Substances 0.000 claims description 51
- 239000000123 paper Substances 0.000 claims description 49
- -1 Polyethylene terephthalate Polymers 0.000 claims description 39
- 238000005520 cutting process Methods 0.000 claims description 30
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims description 28
- 239000003292 glue Substances 0.000 claims description 26
- 239000004814 polyurethane Substances 0.000 claims description 26
- 238000005187 foaming Methods 0.000 claims description 25
- 239000011521 glass Substances 0.000 claims description 25
- 239000007788 liquid Substances 0.000 claims description 25
- 229910052751 metal Inorganic materials 0.000 claims description 25
- 239000002184 metal Substances 0.000 claims description 25
- 229920002635 polyurethane Polymers 0.000 claims description 25
- 229920003002 synthetic resin Polymers 0.000 claims description 25
- 239000000057 synthetic resin Substances 0.000 claims description 25
- 239000012257 stirred material Substances 0.000 claims description 24
- 230000003139 buffering effect Effects 0.000 claims description 21
- 239000002002 slurry Substances 0.000 claims description 21
- 229920000742 Cotton Polymers 0.000 claims description 18
- 238000001035 drying Methods 0.000 claims description 18
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims description 15
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims description 15
- 235000019837 monoammonium phosphate Nutrition 0.000 claims description 15
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 14
- 238000000576 coating method Methods 0.000 claims description 14
- CRHLEZORXKQUEI-UHFFFAOYSA-N dialuminum;cobalt(2+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Al+3].[Co+2].[Co+2] CRHLEZORXKQUEI-UHFFFAOYSA-N 0.000 claims description 14
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 14
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 14
- 239000000347 magnesium hydroxide Substances 0.000 claims description 14
- XFZRQAZGUOTJCS-UHFFFAOYSA-N phosphoric acid;1,3,5-triazine-2,4,6-triamine Chemical compound OP(O)(O)=O.NC1=NC(N)=NC(N)=N1 XFZRQAZGUOTJCS-UHFFFAOYSA-N 0.000 claims description 14
- 235000019333 sodium laurylsulphate Nutrition 0.000 claims description 14
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 claims description 14
- 239000002518 antifoaming agent Substances 0.000 claims description 13
- 239000011248 coating agent Substances 0.000 claims description 13
- 239000002270 dispersing agent Substances 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 13
- 239000003381 stabilizer Substances 0.000 claims description 13
- 238000004049 embossing Methods 0.000 claims description 12
- 238000002791 soaking Methods 0.000 claims description 12
- 230000009471 action Effects 0.000 claims description 11
- 239000003522 acrylic cement Substances 0.000 claims description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 6
- 230000001680 brushing effect Effects 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 2
- ZZTCPWRAHWXWCH-UHFFFAOYSA-N diphenylmethanediamine Chemical compound C=1C=CC=CC=1C(N)(N)C1=CC=CC=C1 ZZTCPWRAHWXWCH-UHFFFAOYSA-N 0.000 claims 2
- 240000005295 Nyssa aquatica Species 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 12
- 239000002585 base Substances 0.000 description 65
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 54
- 238000010298 pulverizing process Methods 0.000 description 9
- 239000002131 composite material Substances 0.000 description 7
- 239000008187 granular material Substances 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 239000006261 foam material Substances 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000003912 environmental pollution Methods 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Substances OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- WOZVHXUHUFLZGK-UHFFFAOYSA-N dimethyl terephthalate Chemical compound COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001579 optical reflectometry Methods 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 229920002545 silicone oil Polymers 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- BTVWZWFKMIUSGS-UHFFFAOYSA-N dimethylethyleneglycol Natural products CC(C)(O)CO BTVWZWFKMIUSGS-UHFFFAOYSA-N 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000003678 scratch resistant effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/12—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2266/00—Composition of foam
- B32B2266/02—Organic
- B32B2266/0214—Materials belonging to B32B27/00
- B32B2266/0221—Vinyl resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2266/00—Composition of foam
- B32B2266/02—Organic
- B32B2266/0214—Materials belonging to B32B27/00
- B32B2266/0264—Polyester
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/202—Conductive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
- B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
Landscapes
- Laminated Bodies (AREA)
Abstract
The invention discloses a high-flame-retardancy conductive foam back adhesive and a preparation process thereof. The foam layer unit is 0.1-0.4 mm thick, so that the foam back adhesive has the buffer property and the ultrathin property, and the application range of the foam back adhesive is wider. The common arrangement of the PET conductive buffer foam layer substrate and the EVA conductive buffer foam layer substrate enables the foam layer units to be more diversified in composition, wider in application and more excellent in buffer effect.
Description
Technical Field
The invention belongs to the technical field of preparation of foam back adhesives, and particularly relates to a high-flame-retardancy conductive foam back adhesive and a preparation process thereof.
Background
The buffering foam back adhesive is a material which is prepared by taking a foam material as a base material through a composite release material and has the effects of shock absorption, sound absorption and sealing, and is widely applied to insulation, adhesion, sealing, skid resistance, buffering and shock resistance of electronic and electric products, mechanical parts, various small household appliances, mobile phone accessories, industrial instruments, computers, peripheral equipment, automobile accessories, audio-visual equipment, toys, cosmetics, handicraft articles, medical instruments, electric tools, office stationery, shelf exhibition, home decoration, acrylic glass, ceramic products and the like.
At present, the following problems mainly exist:
1. as the foam needs to have the flame retardant and conductive effects according to the functional requirements in the application process, the flame retardant and conductive performances of the foam on the market are usually not obvious, or the combination effect of the flame retardant and conductive performances is not satisfactory.
2. Traditional PE, PU and melamine foam have good buffering performance and sound absorption performance, but due to the limitation of a processing technology, an ultrathin buffering foam material layer with high foaming multiplying power cannot be obtained. The traditional processing technology can only obtain the buffer foam material layer with the thickness of more than 1 mm.
3. Because the foam base material used by the traditional foam gum is too single, the application range of the foam gum is narrow, and the cushioning property is not good.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects, the invention provides the high-flame-retardancy conductive foam back adhesive, and the prepared foam back adhesive has excellent flame retardancy and electrical conductivity through scientific and ordered structural design, base material proportion and operation steps. The foam layer unit is 0.1-0.4 mm thick, so that the foam back adhesive has the buffer property and the ultrathin property, and the application range of the foam back adhesive is wider. The common arrangement of the PET conductive buffer foam layer substrate and the EVA conductive buffer foam layer substrate enables the foam layer units to be more diversified in composition, wider in application and more excellent in buffer effect.
The technical scheme is as follows: in order to achieve the above object, the present invention provides a high flame retardant conductive foam back adhesive, comprising: the device comprises a foam layer unit, aluminum foil cloth and embossed release paper; the outer side of the foam layer unit is provided with aluminum foil cloth in a surrounding manner; one side of the aluminum foil cloth, which is far away from the foam layer unit, is provided with embossing release paper. (ii) a The foam layer unit includes: the flame-retardant PET/EVA composite material comprises a first porous material flame-retardant layer, a PET conductive buffer foam layer substrate, a first conductive glue bonding layer, an EVA conductive buffer foam layer substrate and a second porous material flame-retardant layer; a PET conductive buffer foam layer base material is arranged on one side of the first conductive glue bonding layer; an EVA conductive buffer foam layer substrate is arranged on the other side of the first conductive glue bonding layer; a first porous material flame-retardant layer is arranged on one side, away from the first conductive glue bonding layer, of the PET conductive buffer foam layer substrate; one side of the EVA conductive buffer foam layer substrate far away from the first conductive glue bonding layer is provided with a second porous material flame-retardant layer.
The aluminum foil cloth is composed of aluminum foil conductive cloth and thermosol, forms a compact film after being compounded by a special flame-retardant adhesive, has the characteristics of smooth and flat surface, high light reflectivity, high longitudinal and transverse tensile strength, air impermeability, water impermeability, good sealing performance, high shielding rate, strong material toughness, low price and the like, and can play the roles of moisture resistance, fog resistance, corrosion resistance, flame retardance and heat insulation. The release paper is also called as isolating paper, antisticking paper and silicone oil paper, and is made of paper coated with antisticking matter, and can stick the prepreg and separate it easily without chemical reaction with adhesive or pollution to the adhesive system. The first porous material flame-retardant layer and the second porous material flame-retardant layer in the invention are made of the same base material and both composed of a porous material layer and a flame retardant, the porous material is a material with a network structure formed by mutually communicated or closed holes, the boundaries or surfaces of the holes are formed by pillars or flat plates, and the porous material is generally low in relative density, high in specific strength, high in specific surface area and light in weight, so that the porous material can insulate sound and heat and has good permeability. The first conductive glue bonding layer is formed by curing the conductive glue after bonding, so that the conductive adhesive has the functions of conductivity and bonding.
A second conductive glue bonding layer is arranged between the foam layer unit and the aluminum foil cloth; a third conductive glue bonding layer is arranged between the aluminum foil cloth and the embossed release paper; the foam layer unit is bonded with the aluminum foil cloth through a second conductive glue bonding layer; the aluminum foil cloth is bonded with the embossed release paper through a third conductive glue bonding layer.
The second conductive glue bonding layer and the third conductive glue bonding layer are formed by bonding and then curing conductive glue, so that the conductive glue bonding layer and the third conductive glue bonding layer have both conductive and bonding functions.
The surface of the embossed release paper is formed with reticular pattern bulges, and the reticular pattern cross lines are different in color depth; the overall thickness of the foam layer unit is 0.1-0.4 mm.
The surface of the embossed release paper is formed with the reticular pattern bulges, so that the embossed release paper is attractive in appearance, and has a scratch-resistant function through patterns. The overall thickness of the foam layer unit is 0.1-0.4 mm, so that the polymer foam back adhesive has the characteristic of ultrathin shock absorption, can be applied to shock absorption of the bottom of an electronic display screen, and eliminates Newton rings generated between touch modules due to section difference.
The first conductive glue bonding layer, the second conductive glue bonding layer and the third conductive glue bonding layer are formed by bonding conductive glue and then curing the conductive glue; the first porous material flame-retardant layer and the second porous material flame-retardant layer are made of the same base material.
The first conductive glue bonding layer, the second conductive glue bonding layer and the third conductive glue bonding layer have the effects of conductivity and bonding. The porous material flame-retardant layer is composed of a porous material layer and a flame retardant, the porous material is a material with a network structure formed by interpenetrated or closed pores, the boundaries or surfaces of the pores are formed by pillars or flat plates, and the porous material generally has low relative density, high specific strength, high specific surface area and light weight, so that the porous material can insulate sound and heat and has good permeability.
The PET conductive buffer foam layer base material is prepared from the following components in parts by weight:
waste foam: 15 to 30 portions of
Polyethylene terephthalate: 8 to 10 portions of
Isoprene: 5 to 7 parts of
Liquid polyurethane: 70 to 80 portions of
Ag-ZnO powder: 20 to 40 portions of
Fe powder: 15 to 30 portions of
Glass powder: 10 to 14 parts by weight of
Synthetic resin: 30-50 parts.
The waste foam contained in the preparation proportioning components of the PET conductive buffer foam layer base material is leftover materials left after the foam is cut to meet application requirements, if the foam surface waste materials are thrown away, environmental pollution is caused, the waste of the foam is also caused, the effect of environment-friendly recovery can be achieved by using the waste foam as a raw material, and the environmental pollution is reduced. The polyethylene glycol terephthalate is prepared by exchanging dimethyl terephthalate and ethylene glycol ester or esterifying terephthalic acid and ethylene glycol to synthesize dihydroxy ethyl terephthalate, and then performing polycondensation reaction. The foam base material prepared by the foam material has good mechanical property, the impact strength is 3-5 times that of other films, the folding resistance is good, and the foam material is resistant to oil, fat, olefine acid, dilute alkali and most solvents; the gas and water vapor permeability is low, and the gas, water, oil and peculiar smell barrier performance is excellent; the transparency is high, the ultraviolet ray can be blocked, and the glossiness is good; and has no toxicity, no smell and good sanitation and safety.
The EVA conductive buffer foam layer base material is prepared from the following components in parts by weight:
waste foam: 15 to 30 portions of
Ethylene-vinyl acetate copolymer: 8 to 10 portions of
Isoprene: 5 to 7 parts of
Liquid polyurethane: 70 to 80 portions of
Ag-ZnO powder: 20 to 40 portions of
Fe powder: 15 to 30 portions of
Glass powder: 10 to 14 parts by weight of
Synthetic resin: 30-50 parts.
The waste foam contained in the preparation proportioning components of the EVA conductive buffer foam layer substrate is leftover materials left after the foam is cut to meet application requirements, if the foam surface waste materials are thrown away, environmental pollution is caused, the waste of the foam is also caused, the effect of environment-friendly recovery can be achieved by using the waste foam as a raw material, and the environmental pollution is reduced. The foam base material prepared from the ethylene-vinyl acetate copolymer has permanent flexibility, better acid and alkali resistance, ultraviolet aging resistance, and good miscibility, film forming property and cohesiveness. Ag-ZnO powder is noble metal powder, Fe powder is base metal powder, and a mixture prepared by the Ag-ZnO powder, the Fe powder, the glass powder and the synthetic resin is conductive slurry, so that the foam layer base material has a conductive effect.
The first porous material flame-retardant layer consists of a porous material layer and a flame retardant; the flame retardant is sprayed on the porous material layer; the flame retardant is prepared from the following components in parts by weight:
ammonium dihydrogen phosphate: 27 to 38 portions of
Cobalt aluminate: 15 to 20 portions of
Antimony trioxide: 5 to 8 portions of
Magnesium hydroxide: 3 to 5 portions of
Melamine phosphate: 4 to 7 portions of
Zinc borate: 2 to 4 portions of
Magnesium hydroxide diaminodiphenylmethane: 1 to 2 portions of
Sodium lauryl sulfate: 5 to 7 parts of
Dispersing agent: 0.4 to 0.6 portion
A stabilizer: 0.3 to 0.5 portion
Defoaming agent: 0.1 to 0.4 portion.
The ammonium dihydrogen phosphate has a melting point of 180 ℃ and is relatively easy to prepare, so that the ammonium dihydrogen phosphate is an excellent fire retardant mainly used as a fertilizer, wood, paper and fabric. Cobalt aluminate is commonly used as a high temperature resistant ceramic glaze. Antimony trioxide is a heavy gas after liquefaction, can extinguish flame, and is mainly used for fireproof coating at present. Similarly, magnesium hydroxide, melamine phosphate, zinc borate, magnesium hydroxide diaminodiphenylmethane and sodium dodecyl sulfate are all excellent fire-retardant coatings. The flame retardant effect of the flame retardant is effectively improved by adding the flame retardant.
The integral forming of the foam comprises the following steps:
firstly, preparing a PET conductive buffer foam layer base material;
preparing an EVA conductive buffer foam layer substrate;
brushing a layer of conductive adhesive on one side of the base material of the PET conductive buffer foam layer to enable the base material to be bonded with the base material of the EVA conductive buffer foam layer;
preparing a flame retardant, spraying the flame retardant on the porous material layer, putting the porous material layer into a drying box, setting the drying temperature to be 50-60 ℃, drying for 10-15min, and die-cutting according to the size to obtain a first porous material flame-retardant layer and a second porous material flame-retardant layer;
fifthly, attaching the first porous material flame-retardant layer above the adhesive obtained in the step three through a cotton attaching machine, attaching the second porous material flame-retardant layer below the adhesive obtained in the step three through a cotton attaching machine, simultaneously attaching the two material layers under the action of an upper pressing roller and a lower pressing roller of the cotton attaching machine, simultaneously performing waste die cutting action, and obtaining an attached product after die cutting, namely a foam layer unit;
sixthly, putting the foam layer unit into a warm box, adjusting the temperature of the warm box to 55-65 ℃, coating a layer of conductive adhesive around the upper part, the lower part and the left part, and wrapping the aluminum foil cloth around the acrylic adhesive for a circle;
seventhly, adjusting the temperature of the incubator to 45-50 ℃, coating a layer of conductive glue adhesive on the outer wall of the aluminum foil cloth on one side of the adhesive obtained in the step sixthly, and attaching the embossed release paper to the acrylic glue adhesive to obtain the high-flame-retardancy conductive foam back adhesive.
The PET conductive buffer foam layer substrate and the EVA conductive buffer foam layer substrate are arranged together, so that the foam layer unit has more diversified compositions, wider application and more excellent damping effect. The conductive adhesive is prepared by mixing 1 acrylic adhesive and conductive metal powder with the average grain size of less than 100 # in a weight ratio of 2:1, so that the conductive adhesive has the functions of conductivity and adhesion after being solidified. The aluminum foil cloth is composed of aluminum foil conductive cloth and thermosol, a compact film is formed after the aluminum foil cloth is compounded by using a special flame-retardant adhesive, and the aluminum foil cloth has the characteristics of smooth and flat surface, high light reflectivity, high longitudinal and transverse tensile strength, air impermeability, water impermeability, good sealing performance, high shielding rate, strong material toughness, low price and the like, and can play the roles of moisture resistance, fog resistance, corrosion resistance, flame retardance and heat insulation. The release paper is also called as isolating paper, antisticking paper and silicone oil paper, and is made of paper coated with antisticking matter, and can stick the prepreg and separate it easily without chemical reaction with adhesive or pollution to the adhesive system. The preparation method is favorable for completing the process preparation of the high-flame-retardant conductive foam back adhesive.
The preparation method of the PET conductive buffer foam layer substrate comprises the following steps:
firstly, crushing isoprene into particles with the diameter of 1 mu m-3.4 mm, adding the crushed isoprene particles into liquid polyurethane, and fully stirring for 30-45 min at 65 ℃;
secondly, crushing the polyethylene terephthalate into particles with the diameter of 1 mu m-3.4 mm, adding the crushed polyethylene terephthalate particles into the stirred material obtained in the step one, and stirring for 20-30min at the temperature of 55-60 ℃;
crushing the waste foam into particles with the diameter of 1.6-4 mm, adding the crushed waste foam particles into the stirred material obtained in the step II, stirring at 60 ℃ for 1-2 hours, and foaming to obtain the PET buffering foam layer substrate;
mixing Ag-ZnO metal powder, Fe metal powder and glass powder, adding the mixture into synthetic resin, and fully stirring the mixture for 30 to 45min at the temperature of between 50 and 60 ℃ to prepare conductive paste;
cutting the thick PET buffering foam layer base material with high foaming rate into foam sheets with the thickness of 0.25-0.4 mm, adding the foam sheets into the conductive slurry prepared in the step (IV), fully soaking for 1-2 hours at the temperature of 35-45 ℃, and then carrying out hot press forming on the foam sheets at the operation temperature of 170-200 ℃ and the pressure of 4-6 kg/cm2 to prepare the PET conductive buffering foam layer base material;
the preparation method of the EVA conductive buffer foam layer substrate comprises the following steps:
firstly, crushing isoprene into particles with the diameter of 1 mu m-3.4 mm, adding the crushed isoprene particles into liquid polyurethane, and fully stirring for 30-45 min at 65 ℃;
secondly, crushing the ethylene-vinyl acetate copolymer into particles with the diameter of 1 mu m-3.4 mm, adding the crushed ethylene-vinyl acetate copolymer particles into the stirred material obtained in the first step, and stirring for 20-30min at the temperature of 40-50 ℃;
crushing the waste foam into particles with the diameter of 1.6-4 mm, adding the crushed waste foam particles into the stirred material obtained in the step II, stirring at 60 ℃ for 1-2 hours, and foaming to obtain the EVA buffer foam layer substrate;
mixing Ag-ZnO metal powder, Fe metal powder and glass powder, adding the mixture into synthetic resin, and fully stirring the mixture for 30 to 45min at the temperature of between 50 and 60 ℃ to prepare conductive paste;
and fifthly, cutting the thick PET buffering foam layer base material with high foaming rate into foam sheets with the thickness of 0.25-0.4 mm, adding the foam sheets into the conductive slurry prepared in the step (iv), fully soaking for 1-2 hours at the temperature of 35-45 ℃, and then carrying out hot press forming on the foam sheets at the operation temperature of 170-200 ℃ and the pressure of 4-6 kg/cm2 to prepare the PET conductive buffering foam layer base material.
The waste foam, the polyethylene glycol terephthalate, the ethylene-vinyl acetate copolymer, the isoprene and the liquid polyurethane are all crushed into fine particles, which is beneficial to the effective contact of the preparation materials. The changes of temperature and reaction time are beneficial to the accurate occurrence of the preparation process.
The preparation method of the flame retardant comprises the following steps:
firstly, sequentially putting ammonium dihydrogen phosphate, cobalt aluminate, antimony trioxide, magnesium hydroxide, melamine phosphate, zinc borate, magnesium hydroxide diaminodiphenylmethane and sodium dodecyl sulfate into a stirrer, and stirring for 20-30 min;
secondly, adding a dispersing agent, a stabilizing agent and a defoaming agent into the stirrer, and stirring for 10-15min again to obtain the flame retardant.
The flame retardant is prepared by stirring ammonium dihydrogen phosphate, cobalt aluminate, antimony trioxide, magnesium hydroxide, melamine phosphate, zinc borate, magnesium hydroxide diaminodiphenylmethane and sodium dodecyl sulfate to be fully fused, and is more uniform and fine. Then adding a dispersant, a stabilizer and a defoaming agent to make the flame retardant relatively stable after being prepared. The operation sequence is scientific and orderly, so that the flame retardant has excellent performances.
The technical scheme shows that the invention has the following beneficial effects:
1. according to the invention, through scientific and ordered structural design, base material proportion and operation steps, the prepared foam back adhesive has excellent flame retardance and electrical conductivity.
2. The foam layer unit is 0.1-0.4 mm thick, so that the foam back adhesive has the buffer property and the ultrathin property, and the application range of the foam back adhesive is wider.
3. The common arrangement of the PET conductive buffer foam layer substrate and the EVA conductive buffer foam layer substrate enables the foam layer units to be more diversified in composition, wider in application and more excellent in buffer effect.
Drawings
FIG. 1 is a schematic view of the overall structure of a high flame retardant conductive foam back adhesive of the present invention;
in the figure: the composite material comprises a foam layer unit-1, a first porous material flame-retardant layer-11, a PET conductive buffer foam layer substrate-12, a first conductive glue bonding layer-13, an EVA conductive buffer foam layer substrate-14, a second porous material flame-retardant layer-15, aluminum foil cloth-2, embossed release paper-3, a second conductive glue bonding layer-4 and a third conductive glue bonding layer-5.
Detailed Description
The invention is further elucidated with reference to the drawings and the embodiments.
Example 1
The high flame retardant conductive foam back adhesive shown in fig. 1 comprises: the device comprises a foam layer unit 1, an aluminum foil cloth 2 and embossed release paper 3; the aluminum foil cloth 2 is arranged around the outer side of the foam layer unit 1; one side of the aluminum foil cloth 2, which is far away from the foam layer unit 1, is provided with embossing release paper 3; the foam layer unit 1 comprises: the flame-retardant PET/EVA composite material comprises a first porous material flame-retardant layer 11, a PET conductive buffer foam layer base material 12, a first conductive glue bonding layer 13, an EVA conductive buffer foam layer base material 14 and a second porous material flame-retardant layer 15; a PET conductive buffer foam layer base material 12 is arranged on one side of the first conductive glue bonding layer 13; an EVA conductive buffer foam layer substrate 14 is arranged on the other side of the first conductive glue bonding layer 13; a first porous material flame-retardant layer 11 is arranged on one side, away from the first conductive glue bonding layer 13, of the PET conductive buffer foam layer base material 12; and a second porous material flame-retardant layer 15 is arranged on one side, away from the first conductive glue bonding layer 13, of the EVA conductive buffer foam layer substrate 14.
In addition, a second conductive glue bonding layer 4 is arranged between the foam layer unit 1 and the aluminum foil cloth 2; a third conductive glue bonding layer 5 is arranged between the aluminum foil cloth 2 and the embossed release paper 3; the foam layer unit 1 is bonded with the aluminum foil cloth 2 through a second conductive glue bonding layer 4; the aluminum foil cloth 2 is adhered to the embossed release paper 3 through a third conductive glue bonding layer 5.
Furthermore, reticular pattern bulges are formed on the surface of the embossing release paper 3, and the color depth of the reticular pattern cross lines is different; the overall thickness of the foam layer unit 1 is 0.1-0.4 mm.
Furthermore, the first conductive glue bonding layer 13, the second conductive glue bonding layer 4 and the third conductive glue bonding layer 5 are formed by bonding conductive glue and then curing the conductive glue; the first porous material flame-retardant layer 11 and the second porous material flame-retardant layer 15 are made of the same base material.
In addition, the PET conductive buffer foam layer base material 12 is prepared from the following components in parts by weight:
waste foam: 15 portions of
Polyethylene terephthalate: 8 portions of
Isoprene: 5 portions of
Liquid polyurethane: 70 portions of
Ag-ZnO powder: 20 portions of
Fe powder: 15 portions of
Glass powder: 10 portions of
Synthetic resin: 30 parts of (1);
furthermore, the EVA conductive buffer foam layer substrate 14 is prepared from the following components in parts by weight:
waste foam: 15 portions of
Ethylene-vinyl acetate copolymer: 8 portions of
Isoprene: 5 portions of
Liquid polyurethane: 70 portions of
Ag-ZnO powder: 20 portions of
Fe powder: 15 portions of
Glass powder: 10 portions of
Synthetic resin: 30 parts of.
In addition, the first porous material flame-retardant layer 11 consists of a porous material layer and a flame retardant; the flame retardant is sprayed on the porous material layer; the flame retardant is prepared from the following components in parts by weight:
ammonium dihydrogen phosphate: 27 portions of
Cobalt aluminate: 15 portions of
Antimony trioxide: 5 portions of
Magnesium hydroxide: 3 portions of
Melamine phosphate: 4 portions of
Zinc borate: 2 portions of
Magnesium hydroxide diaminodiphenylmethane: 1 part of
Sodium lauryl sulfate: 5 portions of
Dispersing agent: 0.4 portion of
A stabilizer: 0.3 part
Defoaming agent: 0.1 part.
Furthermore, the integral molding of the foam comprises the following steps:
pulverizing isoprene into particles with the diameter of 1 mu mm, adding the pulverized isoprene particles into liquid polyurethane, and fully stirring for 30min at 65 ℃; pulverizing polyethylene terephthalate into particles with diameter of 1 μm, adding the pulverized polyethylene terephthalate particles into the obtained stirred material, and stirring at 55 deg.C for 20 min; crushing the waste foam into particles with the diameter of 1.6mm, adding the crushed waste foam particles into a stirred material added with polyethylene terephthalate particles, stirring for 1h at 60 ℃, and foaming to obtain a PET (polyethylene terephthalate) buffer foam layer substrate; mixing Ag-ZnO metal powder, Fe metal powder and glass powder, adding into synthetic resin, and stirring at 50 deg.C for 30min to obtain conductive slurry; cutting the thick PET buffering foam layer base material with high foaming rate into foam sheets with the thickness of 0.25mm, adding the foam sheets into the prepared conductive slurry, fully soaking for 1h at the temperature of 35 ℃, and then carrying out hot-press forming on the foam sheets at the operating temperature of 170 ℃ and the pressure of 4kg/cm2 to prepare a PET conductive buffering foam layer base material 12;
secondly, crushing isoprene into particles with the diameter of 1 mu m, adding the crushed isoprene particles into liquid polyurethane, and fully stirring for 30min at 65 ℃; pulverizing ethylene-vinyl acetate copolymer into particles with diameter of 1 μm, adding the pulverized ethylene-vinyl acetate copolymer particles into the obtained stirred material, and stirring at 40 deg.C for 20 min; crushing the waste foam into particles with the diameter of 1.6mm, adding the crushed waste foam particles into a stirred material added with ethylene-vinyl acetate copolymer powder, stirring for 1h at 60 ℃, and foaming to obtain an EVA (ethylene-vinyl acetate) buffer foam layer substrate; mixing Ag-ZnO metal powder, Fe metal powder and glass powder, adding into synthetic resin, and stirring at 50 deg.C for 30min to obtain conductive slurry; and then, cutting the thick EVA buffer foam layer substrate with high foaming rate into foam sheets with the thickness of 0.25mm, adding the foam sheets into the prepared conductive slurry, fully soaking for 1h at the temperature of 35 ℃, and then carrying out hot-press shaping on the foam sheets at the operating temperature of 170 ℃ and the pressure of 4kg/cm2 to prepare the EVA conductive buffer foam layer substrate 14.
Thirdly, brushing a layer of conductive adhesive on one side of the base material 12 of the PET conductive buffer foam layer to enable the base material to be bonded with the base material 14 of the EVA conductive buffer foam layer;
sequentially putting ammonium dihydrogen phosphate, cobalt aluminate, antimony trioxide, magnesium hydroxide, melamine phosphate, zinc borate, magnesium hydroxide diaminodiphenylmethane and sodium dodecyl sulfate into a stirrer, and stirring for 20 min; adding a dispersing agent, a stabilizing agent and a defoaming agent into the stirrer, and stirring for 10min again to obtain a flame retardant; spraying a flame retardant on the porous material layer, putting the porous material layer into a drying box, setting the drying temperature at 50 ℃ and the drying time at 10min, and die-cutting according to the size to obtain a first porous material flame-retardant layer 11 and a second porous material flame-retardant layer 15;
fifthly, attaching the first porous material flame-retardant layer 11 above the adhesive obtained in the third step through a cotton attaching machine, attaching the second porous material flame-retardant layer 15 below the adhesive obtained in the third step through a cotton attaching machine, simultaneously attaching the two material layers under the action of upper and lower compression rollers of the cotton attaching machine, and simultaneously performing waste die cutting action, wherein the attached product after die cutting is the foam layer unit 1;
sixthly, putting the foam layer unit into a warm box, adjusting the temperature of the warm box to 55 ℃, coating a layer of conductive adhesive around the upper part, the lower part and the left part, and wrapping the aluminum foil cloth 2 by a circle around the acrylic adhesive;
seventhly, adjusting the temperature of the incubator to 45 ℃, coating a layer of conductive glue adhesive on the outer wall of the aluminum foil cloth on one side of the adhesive obtained in the step sixthly, and attaching the embossed release paper 3 to the acrylic glue adhesive to obtain the high-flame-retardancy conductive foam back adhesive.
Example 2
The high flame retardant conductive foam back adhesive shown in fig. 1 comprises: the device comprises a foam layer unit 1, an aluminum foil cloth 2 and embossed release paper 3; the aluminum foil cloth 2 is arranged around the outer side of the foam layer unit 1; one side of the aluminum foil cloth 2, which is far away from the foam layer unit 1, is provided with embossing release paper 3; the foam layer unit 1 includes: the flame-retardant PET/EVA composite material comprises a first porous material flame-retardant layer 11, a PET conductive buffer foam layer base material 12, a first conductive glue bonding layer 13, an EVA conductive buffer foam layer base material 14 and a second porous material flame-retardant layer 15; a PET conductive buffer foam layer base material 12 is arranged on one side of the first conductive glue bonding layer 13; an EVA conductive buffer foam layer substrate 14 is arranged on the other side of the first conductive glue bonding layer 13; a first porous material flame-retardant layer 11 is arranged on one side, away from the first conductive glue bonding layer 13, of the PET conductive buffer foam layer base material 12; and a second porous material flame-retardant layer 15 is arranged on one side, away from the first conductive glue bonding layer 13, of the EVA conductive buffer foam layer substrate 14.
In addition, a second conductive glue bonding layer 4 is arranged between the foam layer unit 1 and the aluminum foil cloth 2; a third conductive glue bonding layer 5 is arranged between the aluminum foil cloth 2 and the embossed release paper 3; the foam layer unit 1 is bonded with the aluminum foil cloth 2 through a second conductive glue bonding layer 4; the aluminum foil cloth 2 is adhered to the embossed release paper 3 through a third conductive glue bonding layer 5.
Furthermore, reticular pattern bulges are formed on the surface of the embossing release paper 3, and the color depth of the reticular pattern cross lines is different; the overall thickness of the foam layer unit 1 is 0.1-0.4 mm.
Furthermore, the first conductive glue bonding layer 13, the second conductive glue bonding layer 4 and the third conductive glue bonding layer 5 are formed by bonding conductive glue and then curing the conductive glue; the first porous material flame-retardant layer 11 and the second porous material flame-retardant layer 15 are made of the same base material.
In addition, the PET conductive buffer foam layer base material 12 is prepared from the following components in parts by weight:
waste foam: 30 portions of
Polyethylene terephthalate: 10 portions of
Isoprene: 7 portions of
Liquid polyurethane: 80 portions
Ag-ZnO powder: 40 portions of
Fe powder: 30 portions of
Glass powder: 14 portions of
Synthetic resin: 50 parts of a mixture;
furthermore, the EVA conductive buffer foam layer substrate 14 is prepared from the following components in parts by weight:
waste foam: 30 portions of
Ethylene-vinyl acetate copolymer: 10 portions of
Isoprene: 7 portions of
Liquid polyurethane: 80 portions
Ag-ZnO powder: 40 portions of
Fe powder: 30 portions of
Glass powder: 14 portions of
Synthetic resin: 50 parts of the raw materials.
In addition, the first porous material flame-retardant layer 11 consists of a porous material layer and a flame retardant; the flame retardant is sprayed on the porous material layer; the flame retardant is prepared from the following components in parts by weight:
ammonium dihydrogen phosphate: 38 portions of
Cobalt aluminate: 20 portions of
Antimony trioxide: 8 portions of
Magnesium hydroxide: 5 portions of
Melamine phosphate: 7 portions of
Zinc borate: 4 portions of
Magnesium hydroxide diaminodiphenylmethane: 2 portions of
Sodium lauryl sulfate: 7 portions of
Dispersing agent: 0.6 part
A stabilizer: 0.5 portion
Defoaming agent: 0.4 part.
Furthermore, the integral molding of the foam comprises the following steps:
crushing isoprene into particles with the diameter of 3.4mm, adding the crushed isoprene particles into liquid polyurethane, and fully stirring for 45min at 65 ℃; pulverizing polyethylene terephthalate into granules with diameter of 3.4mm, adding the pulverized polyethylene terephthalate granules into the obtained stirred material, and stirring at 60 deg.C for 30 min; crushing the waste foam into particles with the diameter of 4mm, adding the crushed waste foam particles into a stirred material added with polyethylene terephthalate particles, stirring for 2 hours at 60 ℃, and foaming to obtain a PET (polyethylene terephthalate) buffer foam layer substrate; mixing Ag-ZnO metal powder, Fe metal powder and glass powder, adding into synthetic resin, and stirring at 60 deg.C for 45min to obtain conductive slurry; cutting the thick PET buffering foam layer base material with high foaming rate into foam sheets with the thickness of 0.4mm, adding the foam sheets into the prepared conductive slurry, fully soaking for 2 hours at the temperature of 45 ℃, and then carrying out hot-press forming on the foam sheets at the operating temperature of 200 ℃ and the pressure of 6kg/cm2 to prepare a PET conductive buffering foam layer base material 12;
secondly, crushing isoprene into particles with the diameter of 3.4mm, adding the crushed isoprene particles into liquid polyurethane, and fully stirring for 45min at 65 ℃; pulverizing ethylene-vinyl acetate copolymer into particles with diameter of 3.4mm, adding the pulverized ethylene-vinyl acetate copolymer particles into the obtained stirred material, and stirring at 50 deg.C for 30 min; crushing the waste foam into particles with the diameter of 4mm, adding the crushed waste foam particles into a stirred material added with ethylene-vinyl acetate copolymer powder, stirring for 2 hours at 60 ℃, and foaming to obtain an EVA (ethylene-vinyl acetate) buffer foam layer substrate; mixing Ag-ZnO metal powder, Fe metal powder and glass powder, adding the mixture into synthetic resin, and fully stirring the mixture for 45min at the temperature of 50-60 ℃ to prepare conductive slurry; and cutting the thick EVA buffer foam layer substrate with high foaming rate into foam sheets with the thickness of 0.4mm, adding the foam sheets into the prepared conductive slurry, fully soaking at 45 ℃ for 1-2 h, and then carrying out hot-press forming on the foam sheets at the operating temperature of 200 ℃ and the pressure of 6kg/cm2 to prepare the EVA conductive buffer foam layer substrate 14.
Thirdly, brushing a layer of conductive adhesive on one side of the base material 12 of the PET conductive buffer foam layer to enable the base material to be bonded with the base material 14 of the EVA conductive buffer foam layer;
sequentially putting ammonium dihydrogen phosphate, cobalt aluminate, antimony trioxide, magnesium hydroxide, melamine phosphate, zinc borate, magnesium hydroxide diaminodiphenylmethane and sodium dodecyl sulfate into a stirrer, and stirring for 30 min; adding a dispersing agent, a stabilizing agent and a defoaming agent into the stirrer, and stirring for 15min again to obtain a flame retardant; spraying a flame retardant on the porous material layer, putting the porous material layer into a drying box, setting the drying temperature at 60 ℃ and the drying time at 15min, and die-cutting according to the size to obtain a first porous material flame-retardant layer 11 and a second porous material flame-retardant layer 15;
fifthly, attaching the first porous material flame-retardant layer 11 above the adhesive obtained in the third step through a cotton attaching machine, attaching the second porous material flame-retardant layer 15 below the adhesive obtained in the third step through a cotton attaching machine, simultaneously attaching the two material layers under the action of upper and lower compression rollers of the cotton attaching machine, and simultaneously performing waste die cutting action, wherein the attached product after die cutting is the foam layer unit 1;
sixthly, putting the foam layer unit into a warm box, adjusting the temperature of the warm box to 65 ℃, coating a layer of conductive adhesive around the upper part, the lower part and the left part, and wrapping the aluminum foil cloth 2 by a circle around the acrylic adhesive;
seventhly, adjusting the temperature of the incubator to 50 ℃, coating a layer of conductive glue adhesive on the outer wall of the aluminum foil cloth on one side of the adhesive obtained in the step sixthly, and attaching the embossed release paper 3 to the acrylic glue adhesive to obtain the high-flame-retardancy conductive foam back adhesive.
Example 3
The high flame retardant conductive foam back adhesive shown in fig. 1 comprises: the device comprises a foam layer unit 1, an aluminum foil cloth 2 and embossed release paper 3; the aluminum foil cloth 2 is arranged around the outer side of the foam layer unit 1; one side of the aluminum foil cloth 2, which is far away from the foam layer unit 1, is provided with embossing release paper 3; the foam layer unit 1 includes: the flame-retardant PET/EVA composite material comprises a first porous material flame-retardant layer 11, a PET conductive buffer foam layer base material 12, a first conductive glue bonding layer 13, an EVA conductive buffer foam layer base material 14 and a second porous material flame-retardant layer 15; a PET conductive buffer foam layer base material 12 is arranged on one side of the first conductive glue bonding layer 13; an EVA conductive buffer foam layer substrate 14 is arranged on the other side of the first conductive glue bonding layer 13; a first porous material flame-retardant layer 11 is arranged on one side, away from the first conductive glue bonding layer 13, of the PET conductive buffer foam layer base material 12; and a second porous material flame-retardant layer 15 is arranged on one side, away from the first conductive glue bonding layer 13, of the EVA conductive buffer foam layer substrate 14.
In addition, a second conductive glue bonding layer 4 is arranged between the foam layer unit 1 and the aluminum foil cloth 2; a third conductive glue bonding layer 5 is arranged between the aluminum foil cloth 2 and the embossed release paper 3; the foam layer unit 1 is bonded with the aluminum foil cloth 2 through a second conductive glue bonding layer 4; the aluminum foil cloth 2 is adhered to the embossed release paper 3 through a third conductive glue bonding layer 5.
Furthermore, reticular pattern bulges are formed on the surface of the embossing release paper 3, and the color depth of the reticular pattern cross lines is different; the overall thickness of the foam layer unit 1 is 0.25 mm.
Furthermore, the first conductive glue bonding layer 13, the second conductive glue bonding layer 4 and the third conductive glue bonding layer 5 are formed by bonding conductive glue and then curing the conductive glue; the first porous material flame-retardant layer 11 and the second porous material flame-retardant layer 15 are made of the same base material.
In addition, the PET conductive buffer foam layer base material 12 is prepared from the following components in parts by weight:
waste foam: 22.5 portions
Polyethylene terephthalate: 9 portions of
Isoprene: 6 portions of
Liquid polyurethane: 75 portions of
Ag-ZnO powder: 30 portions of
Fe powder: 22.5 portions
Glass powder: 12 portions of
Synthetic resin: 40 parts of a mixture;
furthermore, the EVA conductive buffer foam layer substrate 14 is prepared from the following components in parts by weight:
waste foam: 22.5 portions
Ethylene-vinyl acetate copolymer: 9 portions of
Isoprene: 6 portions of
Liquid polyurethane: 75 portions of
Ag-ZnO powder: 30 portions of
Fe powder: 22.5 portions
Glass powder: 12 portions of
Synthetic resin: 40 parts of the components.
In addition, the first porous material flame-retardant layer 11 consists of a porous material layer and a flame retardant; the flame retardant is sprayed on the porous material layer; the flame retardant is prepared from the following components in parts by weight:
ammonium dihydrogen phosphate: 32.5 portions
Cobalt aluminate: 17.5 parts of
Antimony trioxide: 6.5 parts of
Magnesium hydroxide: 4 portions of
Melamine phosphate: 5.5 parts of
Zinc borate: 3 portions of
Magnesium hydroxide diaminodiphenylmethane: 1.5 parts of
Sodium lauryl sulfate: 6 portions of
Dispersing agent: 0.5 portion
A stabilizer: 0.4 portion of
Defoaming agent: 0.25 part.
Furthermore, the integral molding of the foam comprises the following steps:
crushing isoprene into particles with the diameter of 1.7mm, adding the crushed isoprene particles into liquid polyurethane, and fully stirring at 65 ℃ for 37.5 min; pulverizing polyethylene terephthalate into granules with diameter of 1.7mm, adding the pulverized polyethylene terephthalate granules into the obtained stirred material, and stirring at 57.5 deg.C for 25 min; crushing the waste foam into particles with the diameter of 2.8mm, adding the crushed waste foam particles into a stirred material added with polyethylene terephthalate particles, stirring for 1.5 hours at the temperature of 60 ℃, and foaming to obtain the PET buffering foam layer substrate; mixing Ag-ZnO metal powder, Fe metal powder and glass powder, adding into synthetic resin, and stirring at 55 deg.C for 37.5min to obtain conductive slurry; cutting the thick PET buffering foam layer base material with high foaming rate into foam sheets with the thickness of 0.325mm, adding the foam sheets into the prepared conductive slurry, fully soaking for 1.5h at the temperature of 40 ℃, and then carrying out hot-press forming on the foam sheets at the operating temperature of 185 ℃ and the pressure of 5kg/cm2 to prepare a PET conductive buffering foam layer base material 12;
secondly, crushing isoprene into particles with the diameter of 1.7mm, adding the crushed isoprene particles into liquid polyurethane, and fully stirring for 37.5min at 65 ℃; pulverizing ethylene-vinyl acetate copolymer into particles with diameter of 1.7mm, adding the pulverized ethylene-vinyl acetate copolymer particles into the obtained stirred material, and stirring at 45 deg.C for 25 min; crushing the waste foam into particles with the diameter of 2.8mm, adding the crushed waste foam particles into a stirred material added with ethylene-vinyl acetate copolymer powder, stirring for 1.5 hours at 60 ℃, and foaming to obtain an EVA (ethylene-vinyl acetate) buffer foam layer substrate; mixing Ag-ZnO metal powder, Fe metal powder and glass powder, adding into synthetic resin, and stirring at 55 deg.C for 37.5min to obtain conductive slurry; and then cutting the thick EVA buffer foam layer substrate with high foaming rate into foam sheets with the thickness of 0.325mm, adding the foam sheets into the prepared conductive slurry, fully soaking for 1.5h at 40 ℃, and then carrying out hot-press forming on the foam sheets at the operation temperature of 185 ℃ and the pressure of 5kg/cm2 to prepare the EVA conductive buffer foam layer substrate 14.
Thirdly, brushing a layer of conductive adhesive on one side of the base material 12 of the PET conductive buffer foam layer to enable the base material to be bonded with the base material 14 of the EVA conductive buffer foam layer;
sequentially putting ammonium dihydrogen phosphate, cobalt aluminate, antimony trioxide, magnesium hydroxide, melamine phosphate, zinc borate, magnesium hydroxide diaminodiphenylmethane and sodium dodecyl sulfate into a stirrer, and stirring for 25 min; adding a dispersing agent, a stabilizing agent and a defoaming agent into the stirrer, and stirring for 12.5min again to obtain a flame retardant; spraying a flame retardant on the porous material layer, putting the porous material layer into a drying box, setting the drying temperature to be 55 ℃ and the drying time to be 12.5min, and die-cutting according to the size to obtain a first porous material flame-retardant layer 11 and a second porous material flame-retardant layer 15;
fifthly, attaching the first porous material flame-retardant layer 11 above the adhesive obtained in the third step through a cotton attaching machine, attaching the second porous material flame-retardant layer 15 below the adhesive obtained in the third step through a cotton attaching machine, simultaneously attaching the two material layers under the action of upper and lower compression rollers of the cotton attaching machine, and simultaneously performing waste die cutting action, wherein the attached product after die cutting is the foam layer unit 1;
sixthly, putting the foam layer unit into a warm box, adjusting the temperature of the warm box to 60 ℃, coating a layer of conductive adhesive around the upper part, the lower part and the left part, and wrapping the aluminum foil cloth 2 by a circle around the acrylic adhesive;
seventhly, adjusting the temperature of the incubator to 47.5 ℃, coating a layer of conductive glue adhesive on the outer wall of the aluminum foil cloth on one side of the adhesive obtained in the step sixthly, and attaching the embossed release paper 3 to the acrylic glue adhesive to obtain the high-flame-retardance conductive foam gum.
Example 4
The high flame retardant conductive foam back adhesive shown in fig. 1 comprises: the device comprises a foam layer unit 1, an aluminum foil cloth 2 and embossed release paper 3; the aluminum foil cloth 2 is arranged around the outer side of the foam layer unit 1; one side of the aluminum foil cloth 2, which is far away from the foam layer unit 1, is provided with embossing release paper 3; the foam layer unit 1 comprises: the flame-retardant PET/EVA composite material comprises a first porous material flame-retardant layer 11, a PET conductive buffer foam layer base material 12, a first conductive glue bonding layer 13, an EVA conductive buffer foam layer base material 14 and a second porous material flame-retardant layer 15; a PET conductive buffer foam layer base material 12 is arranged on one side of the first conductive glue bonding layer 13; an EVA conductive buffer foam layer substrate 14 is arranged on the other side of the first conductive glue bonding layer 13; a first porous material flame-retardant layer 11 is arranged on one side, away from the first conductive glue bonding layer 13, of the PET conductive buffer foam layer base material 12; and a second porous material flame-retardant layer 15 is arranged on one side, away from the first conductive glue bonding layer 13, of the EVA conductive buffer foam layer substrate 14.
In addition, a second conductive glue bonding layer 4 is arranged between the foam layer unit 1 and the aluminum foil cloth 2; a third conductive glue bonding layer 5 is arranged between the aluminum foil cloth 2 and the embossed release paper 3; the foam layer unit 1 is bonded with the aluminum foil cloth 2 through a second conductive glue bonding layer 4; the aluminum foil cloth 2 is adhered to the embossed release paper 3 through a third conductive glue bonding layer 5.
Furthermore, reticular pattern bulges are formed on the surface of the embossing release paper 3, and the color depth of the reticular pattern cross lines is different; the overall thickness of the foam layer unit 1 is 0.1 mm.
Furthermore, the first conductive glue bonding layer 13, the second conductive glue bonding layer 4 and the third conductive glue bonding layer 5 are formed by bonding conductive glue and then curing the conductive glue; the first porous material flame-retardant layer 11 and the second porous material flame-retardant layer 15 are made of the same base material.
In addition, the PET conductive buffer foam layer base material 12 is prepared from the following components in parts by weight:
waste foam: 15 portions of
Polyethylene terephthalate: 10 portions of
Isoprene: 5 portions of
Liquid polyurethane: 80 portions
Ag-ZnO powder: 20 portions of
Fe powder: 30 portions of
Glass powder: 10 portions of
Synthetic resin: 50 parts of a mixture;
furthermore, the EVA conductive buffer foam layer substrate 14 is prepared from the following components in parts by weight:
waste foam: 15 portions of
Ethylene-vinyl acetate copolymer: 10 portions of
Isoprene: 5 portions of
Liquid polyurethane: 80 portions
Ag-ZnO powder: 20 portions of
Fe powder: 30 portions of
Glass powder: 10 portions of
Synthetic resin: 50 parts of the raw materials.
In addition, the first porous material flame-retardant layer 11 consists of a porous material layer and a flame retardant; the flame retardant is sprayed on the porous material layer; the flame retardant is prepared from the following components in parts by weight:
ammonium dihydrogen phosphate: 27 portions of
Cobalt aluminate: 20 portions of
Antimony trioxide: 5 portions of
Magnesium hydroxide: 5 portions of
Melamine phosphate: 4 portions of
Zinc borate: 4 portions of
Magnesium hydroxide diaminodiphenylmethane: 1 part of
Sodium lauryl sulfate: 7 portions of
Dispersing agent: 0.4 portion of
A stabilizer: 0.5 portion
Defoaming agent: 0.1 part.
Furthermore, the integral molding of the foam comprises the following steps:
crushing isoprene into particles with the diameter of 3.4mm, adding the crushed isoprene particles into liquid polyurethane, and fully stirring for 30min at 65 ℃; pulverizing polyethylene terephthalate into granules with diameter of 3.4mm, adding the pulverized polyethylene terephthalate granules into the obtained stirred material, and stirring at 55 deg.C for 30 min; crushing the waste foam into particles with the diameter of 1.6mm, adding the crushed waste foam particles into a stirred material added with polyethylene terephthalate particles, stirring for 2 hours at 60 ℃, and foaming to obtain a PET (polyethylene terephthalate) buffer foam layer substrate; mixing Ag-ZnO metal powder, Fe metal powder and glass powder, adding the mixture into synthetic resin, and fully stirring the mixture for 30min at the temperature of between 50 and 60 ℃ to prepare conductive slurry; cutting the thick PET buffering foam layer base material with high foaming rate into foam sheets with the thickness of 0.4mm, adding the foam sheets into the prepared conductive slurry, fully soaking for 2 hours at the temperature of 35 ℃, and then carrying out hot-press forming on the foam sheets at the operating temperature of 170 ℃ and the pressure of 6kg/cm2 to prepare a PET conductive buffering foam layer base material 12;
secondly, crushing isoprene into particles with the diameter of 3.4mm, adding the crushed isoprene particles into liquid polyurethane, and fully stirring for 30min at 65 ℃; pulverizing ethylene-vinyl acetate copolymer into particles with diameter of 3.4mm, adding the pulverized ethylene-vinyl acetate copolymer particles into the obtained stirred material, and stirring at 40 deg.C for 30 min; crushing the waste foam into particles with the diameter of 1.6mm, adding the crushed waste foam particles into a stirred material added with ethylene-vinyl acetate copolymer powder, stirring for 1h at 60 ℃, and foaming to obtain an EVA (ethylene-vinyl acetate) buffer foam layer substrate; mixing Ag-ZnO metal powder, Fe metal powder and glass powder, adding into synthetic resin, and stirring at 60 deg.C for 30min to obtain conductive slurry; and cutting the thick EVA buffer foam layer substrate with high foaming rate into foam sheets with the thickness of 0.4mm, adding the foam sheets into the prepared conductive slurry, fully soaking at 35 ℃ for 1-2 h, and then carrying out hot-press forming on the foam sheets at the operating temperature of 200 ℃ and the pressure of 4kg/cm2 to prepare the EVA conductive buffer foam layer substrate 14.
Thirdly, brushing a layer of conductive adhesive on one side of the base material 12 of the PET conductive buffer foam layer to enable the base material to be bonded with the base material 14 of the EVA conductive buffer foam layer;
sequentially putting ammonium dihydrogen phosphate, cobalt aluminate, antimony trioxide, magnesium hydroxide, melamine phosphate, zinc borate, magnesium hydroxide diaminodiphenylmethane and sodium dodecyl sulfate into a stirrer, and stirring for 20 min; adding a dispersing agent, a stabilizing agent and a defoaming agent into the stirrer, and stirring for 15min again to obtain a flame retardant; spraying a flame retardant on the porous material layer, putting the porous material layer into a drying box, setting the drying temperature at 50 ℃ and the drying time at 15min, and die-cutting according to the size to obtain a first porous material flame-retardant layer 11 and a second porous material flame-retardant layer 15;
fifthly, attaching the first porous material flame-retardant layer 11 above the adhesive obtained in the third step through a cotton attaching machine, attaching the second porous material flame-retardant layer 15 below the adhesive obtained in the third step through a cotton attaching machine, simultaneously attaching the two material layers under the action of upper and lower compression rollers of the cotton attaching machine, and simultaneously performing waste die cutting action, wherein the attached product after die cutting is the foam layer unit 1;
sixthly, putting the foam layer unit into a warm box, adjusting the temperature of the warm box to 65 ℃, coating a layer of conductive adhesive around the upper part, the lower part and the left part, and wrapping the aluminum foil cloth 2 by a circle around the acrylic adhesive;
seventhly, adjusting the temperature of the incubator to 45 ℃, coating a layer of conductive glue adhesive on the outer wall of the aluminum foil cloth on one side of the adhesive obtained in the step sixthly, and attaching the embossed release paper 3 to the acrylic glue adhesive to obtain the high-flame-retardancy conductive foam back adhesive.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.
Claims (5)
1. The utility model provides a cotton gum of high flame retardant electrically conductive bubble which characterized in that: comprises a foam layer unit (1), an aluminum foil cloth (2) and an embossing release paper (3); the aluminum foil cloth (2) is arranged around the outer side of the foam layer unit (1); one side of the aluminum foil cloth (2) far away from the foam layer unit (1) is provided with embossing release paper (3); the foam layer unit (1) comprises: the flame-retardant EVA foam board comprises a first porous material flame-retardant layer (11), a PET conductive buffer foam layer base material (12), a first conductive glue bonding layer (13), an EVA conductive buffer foam layer base material (14) and a second porous material flame-retardant layer (15); a PET conductive buffer foam layer base material (12) is arranged on one side of the first conductive glue bonding layer (13); an EVA conductive buffer foam layer substrate (14) is arranged on the other side of the first conductive glue bonding layer (13); a first porous material flame-retardant layer (11) is arranged on one side, away from the first conductive glue bonding layer (13), of the PET conductive buffer foam layer base material (12); a second porous material flame-retardant layer (15) is arranged on one side, away from the first conductive glue bonding layer (13), of the EVA conductive buffer foam layer substrate (14); a second conductive glue bonding layer (4) is arranged between the foam layer unit (1) and the aluminum foil cloth (2); a third conductive glue bonding layer (5) is arranged between the aluminum foil cloth (2) and the embossed release paper (3); the foam layer unit (1) is bonded with the aluminum foil cloth (2) through a second conductive glue bonding layer (4); the aluminum foil cloth (2) is bonded with the embossed release paper (3) through a third conductive glue bonding layer (5);
the PET conductive buffer foam layer base material (12) is prepared from the following components in parts by weight:
waste foam: 15 to 30 portions of
Polyethylene terephthalate: 8 to 10 portions of
Isoprene: 5 to 7 parts of
Liquid polyurethane: 70 to 80 portions of
Ag-ZnO powder: 20 to 40 portions of
Fe powder: 15 to 30 portions of
Glass powder: 10 to 14 parts by weight of
Synthetic resin: 30-50 parts of a solvent;
the EVA conductive buffer foam layer base material (14) is prepared from the following components in parts by weight:
waste foam: 15 to 30 portions of
Ethylene-vinyl acetate copolymer: 8 to 10 portions of
Isoprene: 5 to 7 parts of
Liquid polyurethane: 70 to 80 portions of
Ag-ZnO powder: 20 to 40 portions of
Fe powder: 15 to 30 portions of
Glass powder: 10 to 14 parts by weight of
Synthetic resin: 30-50 parts of a solvent;
the first porous material flame-retardant layer (11) consists of a porous material layer and a flame retardant; the flame retardant is sprayed on the porous material layer; the flame retardant is prepared from the following components in parts by weight:
ammonium dihydrogen phosphate: 27 to 38 portions of
Cobalt aluminate: 15 to 20 portions of
Antimony trioxide: 5 to 8 portions of
Magnesium hydroxide: 3 to 5 portions of
Melamine phosphate: 4 to 7 portions of
Zinc borate: 2 to 4 portions of
Diaminodiphenylmethane: 1 to 2 portions of
Sodium lauryl sulfate: 5 to 7 parts of
Dispersing agent: 0.4 to 0.6 portion
A stabilizer: 0.3 to 0.5 portion
Defoaming agent: 0.1 to 0.4 portion.
2. The high flame retardant conductive foam back adhesive as claimed in claim 1, wherein: reticular pattern bulges are formed on the surface of the embossing release paper (3), and the color depth of the reticular pattern cross lines is different; the overall thickness of the foam layer unit (1) is 0.1-0.4 mm.
3. The high flame retardant conductive foam back adhesive as claimed in claim 1, wherein: the first conductive glue bonding layer (13), the second conductive glue bonding layer (4) and the third conductive glue bonding layer (5) are formed by bonding conductive glue and then curing the conductive glue; the first porous material flame-retardant layer (11) and the second porous material flame-retardant layer (15) are made of the same base material.
4. A preparation process of high-flame-retardancy conductive foam back adhesive is characterized by comprising the following steps of: the integral forming of the foam comprises the following steps:
1) preparing a PET conductive buffer foam layer substrate (12), namely: firstly, crushing isoprene into particles with the diameter of 1 mu m-3.4 mm, adding the crushed isoprene particles into liquid polyurethane, and fully stirring for 30-45 min at 65 ℃;
secondly, crushing the polyethylene terephthalate into particles with the diameter of 1 mu m-3.4 mm, adding the crushed polyethylene terephthalate particles into the stirred material obtained in the step one, and stirring for 20-30min at the temperature of 55-60 ℃;
crushing the waste foam into particles with the diameter of 1.6-4 mm, adding the crushed waste foam particles into the stirred material obtained in the step II, stirring at 60 ℃ for 1-2 hours, and foaming to obtain the PET buffering foam layer substrate;
mixing Ag-ZnO metal powder, Fe metal powder and glass powder, adding the mixture into synthetic resin, and fully stirring the mixture for 30 to 45min at the temperature of between 50 and 60 ℃ to prepare conductive paste;
thirdly, cutting the thick PET buffering foam layer base material with high foaming rate into foam sheets with the thickness of 0.25-0.4 mm, adding the foam sheets into the conductive slurry prepared in the fourth step, fully soaking for 1-2 hours at the temperature of 35-45 ℃, and then carrying out hot press forming on the foam sheets at the operation temperature of 170-200 ℃ and the pressure of 4-6 kg/cm2 to prepare the PET conductive buffering foam layer base material (12); 2): preparing an EVA conductive buffer foam layer substrate (14), namely: firstly, crushing isoprene into particles with the diameter of 1 mu m-3.4 mm, adding the crushed isoprene particles into liquid polyurethane, and fully stirring for 30-45 min at 65 ℃;
secondly, crushing the ethylene-vinyl acetate copolymer into particles with the diameter of 1 mu m-3.4 mm, adding the crushed ethylene-vinyl acetate copolymer particles into the stirred material obtained in the first step, and stirring for 20-30min at the temperature of 40-50 ℃;
crushing the waste foam into particles with the diameter of 1.6-4 mm, adding the crushed waste foam particles into the stirred material obtained in the step II, stirring at 60 ℃ for 1-2 hours, and foaming to obtain the EVA buffer foam layer substrate;
mixing Ag-ZnO metal powder, Fe metal powder and glass powder, adding the mixture into synthetic resin, and fully stirring the mixture for 30 to 45min at the temperature of between 50 and 60 ℃ to prepare conductive paste;
thirdly, cutting the thick EVA buffer foam layer substrate with high foaming rate into foam sheets with the thickness of 0.25-0.4 mm, adding the foam sheets into the conductive slurry prepared in the fourth step, fully soaking for 1-2 hours at the temperature of 35-45 ℃, and then carrying out hot-press shaping on the foam sheets at the operation temperature of 170-200 ℃ and the pressure of 4-6 kg/cm2 to prepare the EVA conductive buffer foam layer substrate (14);
3): brushing a layer of conductive adhesive on one side of the PET conductive buffer foam layer base material (12) to enable the PET conductive buffer foam layer base material to be bonded with the EVA conductive buffer foam layer base material (14);
4): preparing a flame retardant, spraying the flame retardant on the porous material layer, putting the porous material layer into a drying box, setting the drying temperature to be 50-60 ℃, drying for 10-15min, and die-cutting according to the size to obtain a first porous material flame-retardant layer (11) and a second porous material flame-retardant layer (15);
5): a first porous material flame-retardant layer (11) is attached to the upper side of the adhesive obtained in the step 3) through a cotton attaching machine, a second porous material flame-retardant layer (15) is attached to the lower side of the adhesive obtained in the step 3) through the cotton attaching machine, the two material layers are simultaneously attached under the action of an upper pressing roller and a lower pressing roller of the cotton attaching machine, waste material die cutting is simultaneously carried out, and the attached product after die cutting is the foam layer unit (1);
6): putting the foam layer unit into an incubator, adjusting the temperature of the incubator to 55-65 ℃, coating a layer of conductive adhesive around the upper part, the lower part and the left part, and wrapping the aluminum foil cloth (2) for a circle around the acrylic adhesive;
7): and (3) adjusting the temperature of the incubator to 45-50 ℃, coating a layer of conductive glue adhesive on the outer wall of the aluminum foil cloth on one side of the adhesive obtained in the step 6), and attaching the embossed release paper (3) to the acrylic glue adhesive to obtain the high-flame-retardancy conductive foam back adhesive.
5. The preparation process of the high-flame-retardancy conductive foam back adhesive according to claim 4, characterized in that: the preparation method of the flame retardant comprises the following steps:
firstly, sequentially putting ammonium dihydrogen phosphate, cobalt aluminate, antimony trioxide, magnesium hydroxide, melamine phosphate, zinc borate, diaminodiphenylmethane and sodium dodecyl sulfate into a stirrer, and stirring for 20-30 min;
secondly, adding a dispersing agent, a stabilizing agent and a defoaming agent into the stirrer, and stirring for 10-15min again to obtain the flame retardant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811541848.XA CN109664561B (en) | 2018-12-17 | 2018-12-17 | High-flame-retardancy conductive foam back adhesive and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811541848.XA CN109664561B (en) | 2018-12-17 | 2018-12-17 | High-flame-retardancy conductive foam back adhesive and preparation process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109664561A CN109664561A (en) | 2019-04-23 |
| CN109664561B true CN109664561B (en) | 2021-04-23 |
Family
ID=66144471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811541848.XA Active CN109664561B (en) | 2018-12-17 | 2018-12-17 | High-flame-retardancy conductive foam back adhesive and preparation process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109664561B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103709725A (en) * | 2014-01-15 | 2014-04-09 | 何晋帆 | Foam and fabrication method thereof |
| CN105670529B (en) * | 2016-01-25 | 2019-04-16 | 衡山县佳诚新材料有限公司 | Ultra-thin buffering foam tape of one kind and preparation method thereof |
| CN206812550U (en) * | 2017-03-17 | 2017-12-29 | 辛格顿（苏州）电子科技有限公司 | A kind of compound buffering foam material |
-
2018
- 2018-12-17 CN CN201811541848.XA patent/CN109664561B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109664561A (en) | 2019-04-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101205425B (en) | Foaming powder coating | |
| CN109705758A (en) | A kind of ultra-thin damping macromolecule foam tape and its preparation process | |
| CN105058940B (en) | Preparation method of anti-static decorating plate | |
| CN105670168A (en) | High-compression-resistance impact-resistant corrugated carton | |
| CN109777312B (en) | Preparation process of heat-conductive electric appliance insulation foam adhesive tape for high temperature | |
| CN109677081B (en) | Novel heat-resistant delayed-combustion foam and preparation process thereof | |
| CN109664561B (en) | High-flame-retardancy conductive foam back adhesive and preparation process thereof | |
| CN103057193A (en) | A-level fireproof aluminum composite board | |
| CN103160201A (en) | Automobile roof coated alloy material | |
| CN103331964A (en) | Composite plate and preparation method thereof | |
| CN103289341A (en) | Reinforced polycarbonate composite material | |
| CN101333424A (en) | Water-soluble spraying glue and method for preparing same | |
| CN203008283U (en) | Coconut shell decoration plate | |
| CN201399815Y (en) | Flame-retardant fire-proof laminated wood board | |
| CN109777313A (en) | A kind of barrier antidetonation foam tape based on PET modified composite material | |
| CN104842618A (en) | Travel heat insulation interlayer material and preparation method thereof | |
| CN104744979A (en) | Environment-friendly and waterproof heat-insulating coating | |
| CN201817998U (en) | Inorganic foam flame-retardant composite honeycomb plate | |
| CN202722817U (en) | Multilayer bag structure | |
| CN102786769A (en) | Aging-resistant ABS (acrylonitrile-butadiene-styrene) /PVC (polyvinyl chloride) /PETG (polyethylene terephthalate glycol) alloy and preparation method thereof | |
| CN213353794U (en) | Environment-friendly flame-retardant plate | |
| CN104327437A (en) | Modified HIPS composite material | |
| CN104403172A (en) | LDPE (low-density polyethylene) foaming heteromorphic material and preparation method thereof | |
| CN105882099A (en) | Fireproof composite board and preparing method thereof | |
| CN216476002U (en) | Multifunctional wall decoration |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |