CN115353831B - EVA flame-retardant hot melt adhesive and preparation method thereof - Google Patents
EVA flame-retardant hot melt adhesive and preparation method thereof Download PDFInfo
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- CN115353831B CN115353831B CN202211047428.2A CN202211047428A CN115353831B CN 115353831 B CN115353831 B CN 115353831B CN 202211047428 A CN202211047428 A CN 202211047428A CN 115353831 B CN115353831 B CN 115353831B
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 88
- 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 title claims abstract description 78
- 239000004831 Hot glue Substances 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title description 7
- 239000005038 ethylene vinyl acetate Substances 0.000 claims abstract description 81
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims abstract description 81
- 229920005989 resin Polymers 0.000 claims abstract description 46
- 239000011347 resin Substances 0.000 claims abstract description 46
- 239000003208 petroleum Substances 0.000 claims abstract description 42
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 29
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 29
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 24
- 239000010452 phosphate Substances 0.000 claims abstract description 24
- 229920001911 maleic anhydride grafted polypropylene Polymers 0.000 claims abstract description 21
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 239000000155 melt Substances 0.000 claims description 25
- 239000000203 mixture Substances 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 8
- HECLRDQVFMWTQS-UHFFFAOYSA-N Dicyclopentadiene Chemical compound C1C2C3CC=CC3C1C=C2 HECLRDQVFMWTQS-UHFFFAOYSA-N 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 claims description 6
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 claims description 5
- 238000009835 boiling Methods 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 230000000052 comparative effect Effects 0.000 abstract description 12
- 239000007787 solid Substances 0.000 abstract description 6
- 238000000576 coating method Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 239000011248 coating agent Substances 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000012986 modification Methods 0.000 abstract description 3
- 230000004048 modification Effects 0.000 abstract description 3
- 229920001971 elastomer Polymers 0.000 description 40
- 239000000806 elastomer Substances 0.000 description 38
- 239000001993 wax Substances 0.000 description 21
- 239000012188 paraffin wax Substances 0.000 description 9
- 239000007788 liquid Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 4
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 229910052736 halogen Inorganic materials 0.000 description 4
- 150000002367 halogens Chemical class 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 241000282412 Homo Species 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 150000002632 lipids Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- ZQKXQUJXLSSJCH-UHFFFAOYSA-N melamine cyanurate Chemical compound NC1=NC(N)=NC(N)=N1.O=C1NC(=O)NC(=O)N1 ZQKXQUJXLSSJCH-UHFFFAOYSA-N 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 229910001377 aluminum hypophosphite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 239000001038 titanium pigment Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/04—Homopolymers or copolymers of ethene
- C09J123/08—Copolymers of ethene
- C09J123/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C09J123/0853—Vinylacetate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
Abstract
The invention discloses an EVA flame-retardant hot melt adhesive, which belongs to the technical field of hot melt adhesives and is prepared from the following raw materials in parts by weight: 5-10 parts of Fischer-Tropsch wax, 30-40 parts of ethylene-vinyl acetate copolymer, 30-50 parts of hydrogenated petroleum resin, 10-30 parts of flame retardant, 0.1-10 parts of maleic anhydride grafted polypropylene and 0.1-1 part of antioxidant. The hot melt adhesive produced by adopting the solid phosphate flame retardant has no obvious layering phenomenon, but has unstable flame retardant effect after coating, so the flame retardant has better compatibility with wax, EVA and tackifying resin in the hot melt adhesive through modification and adjustment of maleic anhydride grafted polypropylene wax. The machine has no phenomena of blocking, corrosion, layering and unstable performance of comparative examples 1-6, has excellent machine performance, and has the advantages of good flame retardant property, good compatibility, good bonding property and environmental protection.
Description
Technical Field
The invention belongs to the technical field of hot melt adhesives.
Background
Air is the basic condition upon which humans survive. With the progressive deterioration of the atmospheric environment, the living environment of humans and animals is greatly threatened. The fresh air system is a set of independent air treatment system consisting of an air supply system and an exhaust system, and is divided into a pipeline type fresh air system and a pipeline-free fresh air system, and is mainly used for purifying and ventilating indoor air and capable of improving human living environment. One of the core components of the fresh air system is a filter core for filtering and purifying air, and the hot melt adhesive is mainly used for forming and bonding filter paper.
Because the new trend system mainly plays the effect of air-purifying, airing exhaust, air supply, so once appear the flame in the new trend system, the flame can get into each indoor room along with the pipeline of new trend system, has potential safety hazard. The flame retardant commonly used in the market is divided into solid flame retardant and liquid flame retardant, the solid flame retardant has good compatibility with EVA elastomer, and can reach flame retardant V-0 grade, but after the hot melt adhesive is coated and used for 8-10 days, precipitation is easy to generate, so that the filter screen of the hot melt adhesive machine is blocked, and the nozzle of the hot melt adhesive machine is blocked, thereby seriously affecting the production quality and the filtering efficiency. The liquid flame retardant is not compatible with EVA, and can reach the flame retardant V-0 grade, but the hot melt adhesive is incompatible during construction.
Disclosure of Invention
The invention aims to provide EVA flame-retardant hot melt adhesive and a corresponding preparation method thereof.
Based on the above purpose, the invention adopts the following technical scheme:
an EVA flame-retardant hot melt adhesive is prepared from the following raw materials in parts by weight: 5-10 parts of Fischer-Tropsch wax, 30-40 parts of ethylene-vinyl acetate copolymer, 30-50 parts of hydrogenated petroleum resin, 10-30 parts of flame retardant, 0.1-10 parts of maleic anhydride grafted polypropylene and 0.1-1 part of antioxidant.
6.5 parts of Fischer-Tropsch wax, 35 parts of EVA elastomer, 30 parts of hydrogenated petroleum resin (30 parts of DCPD hydrogenated petroleum resin), 23 parts of phosphate flame retardant, 5 parts of maleic anhydride grafted polypropylene and 0.5 part of antioxidant.
The hydrogenated petroleum resin is one or a mixture of more than two of DCPD hydrogenated petroleum resin, C5 hydrogenated petroleum resin, C9 hydrogenated petroleum resin and C5C9 copolymerized hydrogenated petroleum resin.
The flame retardant is a phosphate flame retardant.
The VA content of the ethylene-vinyl acetate copolymer is 19-33, and the melt index is 20g/10min-400g/10min; the phosphate flame retardant is a solid phosphate halogen-free flame retardant.
The VA content of the ethylene-vinyl acetate copolymer is more than two of 19, 28 and 33.
The softening point of the maleic anhydride grafted polypropylene is 135 ℃, and the melt index is 22g/10min.
The antioxidant is a mixture of antioxidant AT-168 and antioxidant 1010; the phosphate flame retardant is phosphate halogen-free flame retardant PX-200 of Japanese eight, and has melting point of 100deg.C, boiling point of 260 deg.C, and softening point of 90-110deg.C.
The method for preparing the EVA flame-retardant hot melt adhesive comprises the following steps:
mixing Fischer-Tropsch wax and antioxidant under stirring at 120-140 deg.C, stirring until Fischer-Tropsch wax is melted, sequentially adding flame retardant, ethylene-vinyl acetate copolymer, maleic anhydride grafted polypropylene and hydrogenated petroleum resin, stirring until raw materials are melted, reacting under vacuum for 20-40min, granulating, and packaging.
Adding a flame retardant, adding ethylene-vinyl acetate copolymer, maleic anhydride grafted polypropylene and a part of hydrogenated petroleum resin after the flame retardant is melted, stirring until the mixture is melted, and adding another part of hydrogenated petroleum resin.
The ethylene-vinyl acetate copolymer adopted in the invention has the vinyl acetate content of 40% -70%, and is abbreviated as EVA elastomer or EVA rubber.
Compared with the prior art, the invention has the following beneficial effects:
1) The hot melt adhesive produced by adopting the solid phosphate flame retardant has no obvious layering phenomenon, but has unstable flame retardant effect after coating, so the flame retardant has better compatibility with wax, EVA and tackifying resin in the hot melt adhesive through modification and adjustment of maleic anhydride grafted polypropylene wax.
2) The Fischer-Tropsch wax fully dissolves and disperses the flame retardant, improves the uniformity of the flame retardant, improves the flame retardance of the hot melt adhesive, has no phenomena of blocking, corrosion, layering and unstable performance of comparative examples 1-6, has excellent performance, has the advantages of good flame retardance, good compatibility, good adhesive property and environmental protection, and solves the technical problems that the EVA system filter hot melt adhesive precipitates to block a rubber tube and the adhesive material is incompatible with the hot melt adhesive when in use. The method comprises the steps of carrying out a first treatment on the surface of the
3) The ethylene-vinyl acetate copolymer and other raw materials are put in a cross manner, so that the dispersibility of ethylene-vinyl acetate copolymer is ensured, the stirring resistance of a reaction kettle stirrer is reduced, and the preparation method is simple and easy to operate and is suitable for popularization and application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below, but the following embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, based on the examples of the invention, which a person skilled in the art would have without inventive effort, fall within the scope of the invention.
In the following examples, the maleic anhydride-grafted polypropylene has a softening point of 135℃or less and a melt index of 22g/10min.
The phosphate flame retardant is a phosphate halogen-free flame retardant PX-200 of Japanese eight, the melting point is 100 ℃, the boiling point is 260 ℃, the softening point is 90-110 ℃, and the flame retardant at the softening point can have better compatibility with EVA hot melt adhesive and is better suitable for the coating process of the hot melt adhesive.
The softening point of the hydrogenated petroleum resin is 100 ℃.
The phosphate flame retardant used in the invention is purchased from phosphate halogen-free flame retardant PX-200 of Daba in Japan.
Example 1
An EVA flame-retardant hot melt adhesive is prepared from the following raw materials in parts by weight: 6.5 parts of Fischer-Tropsch wax, 35 parts of EVA elastomer, 30 parts of hydrogenated petroleum resin (30 parts of DCPD hydrogenated petroleum resin), 23 parts of phosphate flame retardant, 5 parts of maleic anhydride grafted polypropylene and 0.5 part of antioxidant (antioxidant AT-168.2 parts and antioxidant 1010.3 parts).
12 parts of EVA elastomer, wherein the EVA elastomer has a VA content of 28 and a melt index of 20g/10 min; 6 parts of EVA elastomer with VA content of 28 and melt index of 400g/10min; 17 parts of EVA elastomer with VA content of 19 and melt index of 400g/10min.
The method for preparing the EVA flame-retardant hot melt adhesive comprises the following steps:
adding Fischer-Tropsch wax and an antioxidant into a reaction kettle, heating to 130 ℃, stirring at a stirring speed of 30 revolutions per minute until the Fischer-Tropsch wax is completely melted, sequentially adding a flame retardant until the flame retardant is completely melted, adding an ethylene-vinyl acetate copolymer and a part of hydrogenated petroleum resin into the mixture until the raw materials are melted, adding an ethylene-vinyl acetate copolymer with a low melt index into the mixture in the feeding sequence, adding an ethylene-vinyl acetate copolymer with a high melt index into the mixture, adding maleic anhydride grafted polypropylene into the mixture until the maleic anhydride grafted polypropylene is completely melted, adding the rest hydrogenated petroleum resin, stirring until the raw materials are melted, opening a vacuum device, keeping the reaction kettle at-0.8 MPa, reacting for 30 minutes, granulating the mixture in a granulator after the materials are completely free of bubbles, and packaging the mixture.
Example 2
An EVA flame-retardant hot melt adhesive is prepared from the following raw materials in parts by weight: 5 parts of Fischer-Tropsch wax, 30 parts of EVA elastomer, 36 parts of hydrogenated petroleum resin (16 parts of C5 hydrogenated petroleum resin and 20 parts of C5C9 hydrogenated petroleum resin), 15 parts of phosphate flame retardant, 1 part of maleic anhydride grafted polypropylene and 1 part of antioxidant (antioxidant AT-168.3 parts and antioxidant 1010.7 parts).
12 parts of EVA elastomer, wherein the EVA elastomer has a VA content of 28 and a melt index of 20g/10 min; 6 parts of EVA elastomer with VA content of 28 and melt index of 400g/10min; 12 parts of EVA elastomer with VA content of 19 and melt index of 400g/10min.
The preparation method is described in example 1.
Example 3
An EVA flame-retardant hot melt adhesive is prepared from the following raw materials in parts by weight: 10 parts of Fischer-Tropsch wax, 39 parts of EVA elastomer, 40 parts of hydrogenated petroleum resin (18 parts of C5 hydrogenated petroleum resin and 22 parts of DCPD hydrogenated petroleum resin), 10 parts of phosphate flame retardant, 7 parts of maleic anhydride grafted polypropylene and 0.8 part of antioxidant (antioxidant AT-168.4 parts and antioxidant 1010.4 parts).
15 parts of EVA elastomer with VA content of 28 and melt index of 20g/10 min; 10 parts of EVA elastomer with VA content of 28 and melt index of 400g/10min; 14 parts of EVA elastomer with VA content of 19 and melt index of 400g/10min.
The preparation method is described in example 1.
Example 4
An EVA flame-retardant hot melt adhesive is prepared from the following raw materials in parts by weight: 8 parts of Fischer-Tropsch wax, 33 parts of EVA elastomer, 50 parts of hydrogenated petroleum resin (20 parts of C5 hydrogenated petroleum resin, 20 parts of DCPD hydrogenated petroleum resin and 10 parts of C5C9 copolymerized hydrogenated petroleum resin), 29 parts of phosphate flame retardant, 10 parts of maleic anhydride grafted polypropylene and 0.2 part of antioxidant (antioxidant AT-168.1 part and antioxidant 1010.1 part).
12 parts of EVA elastomer, wherein the EVA elastomer has a VA content of 28 and a melt index of 20g/10 min; 10 parts of EVA elastomer with VA content of 28 and melt index of 400g/10min; 11 parts of EVA elastomer with VA content of 19 and melt index of 400g/10min.
The preparation method is described in example 1.
Example 5 test example
To verify the performance of the hot melt adhesive of the present invention, the hot melt adhesive of example 1 of the present invention was compared with the hot melt adhesives of comparative examples 1 to 6, to which other flame retardants such as salt flame retardants, halogen flame retardants, and lipid flame retardants were added, in terms of viscosity, softening point, compatibility, adhesive property, suitability for use on machine, and the like, and the formulations of comparative examples 1 to 6 were as follows. The test results are shown in table 1 below.
Comparative example 1: 13 parts of PE wax (softening point 110 ℃), 2.5 parts of 58# full refined paraffin wax, 20 parts of EVA elastomer with the VA content of 28 and the melt index of 400g/10min, 17 parts of EVA elastomer with the VA content of 19 and the melt index of 400g/10min, 32 parts of hydrogenated petroleum resin (softening point 100 ℃), 15 parts of melamine cyanurate, 5 parts of antimony trioxide and 0.5 part of antioxidant.
Comparative example 2: 13 parts of PE wax (softening point 110 ℃), 2.5 parts of 58# full refined paraffin wax, 20 parts of EVA elastomer with the VA content of 28 and the melt index of 400g/10min, 17 parts of EVA elastomer with the VA content of 19 and the melt index of 400g/10min, 32 parts of hydrogenated petroleum resin (softening point 100 ℃), 15 parts of melamine cyanurate, 5 parts of aluminum hypophosphite and 0.5 part of antioxidant.
Comparative example 3: 10 parts of PE wax (softening point 110 ℃), 4.5 parts of 58# full refined paraffin wax, 12 parts of EVA elastomer with a VA content of 28 and a melt index of 20g/10min, 6 parts of EVA elastomer with a VA content of 28 and a melt index of 400g/10min, 19 parts of VA content, 17 parts of EVA elastomer with a melt index of 400g/10min, 34 parts of hydrogenated petroleum resin (softening point 100 ℃), 15 parts of chlorinated paraffin (melting point 70 ℃), 1 part of titanium pigment and 0.5 part of antioxidant.
Comparative example 4: 10 parts of PE wax (softening point 110 ℃), 4.5 parts of 58# full refined paraffin wax, 5 parts of EVA elastomer with a VA content of 28 and a melt index of 20g/10min, 13 parts of EVA elastomer with a VA content of 28 and a melt index of 400g/10min, 19 parts of VA content, 17 parts of EVA elastomer with a melt index of 400g/10min, 34 parts of hydrogenated petroleum resin (softening point 100 ℃) and 7 parts of chlorinated paraffin (melting point 70 ℃), 2 parts of antimonous oxide, 1 part of titanium dioxide and 0.5 part of antioxidant.
Comparative example 5: 6.5 parts of Fischer-Tropsch wax (softening point 115 ℃), 12 parts of EVA elastomer with a VA content of 28, a melt index of 20g/10min, 6 parts of EVA elastomer with a VA content of 28, a melt index of 400g/10min, 19 parts of VA content, 17 parts of EVA elastomer with a melt index of 400g/10min, 30 parts of hydrogenated petroleum resin (softening point 100 ℃), 23 parts of phosphate flame retardant (liquid), 5 parts of maleic anhydride grafted polypropylene and 0.5 part of antioxidant.
Comparative example 6: 9 parts of Fischer-Tropsch wax, 2.5 parts of 58# full refined paraffin wax, 12 parts of EVA elastomer with a VA content of 28 and a melt index of 20g/10min, 6 parts of EVA elastomer with a VA content of 28 and a melt index of 400g/10min, 19 parts of VA content, 17 parts of EVA elastomer with a melt index of 400g/10min, 30 parts of hydrogenated petroleum resin (softening point 100 ℃), 23 parts of phosphate flame retardant (melting point 100 ℃) and 0.5 part of antioxidant.
TABLE 1 results of Performance test of inventive example 1 and comparative examples 1-6
As shown in table 1, the added salt flame retardant has good compatibility in the use process of the hot melt adhesive, but due to the large specific gravity of the added salt flame retardant and the characteristics of the flame retardant filter element in the use process of the hot melt adhesive (the added salt flame retardant is heated and melted into liquid and sprayed by a hot melt adhesive machine), the salt flame retardant forms a precipitate after the colloid is melted during the use, so that the glue spraying system of the hot melt adhesive machine is blocked.
The halogen flame retardant (70 # halogenated paraffin) is added, and the flame retardant performance and the service condition are very good no matter how much the halogen flame retardant is in the hot melt adhesive, but the halogen flame retardant can generate strong acid ions after being heated, so that corrosion is formed on hot melt adhesive coating equipment, acid gas is formed by reaction with water in the air, and the harm is caused to human gas.
The hot melt adhesive added with the liquid phosphate flame retardant has layering phenomenon after being heated and stood, which indicates that the compatibility of the lipid flame retardant with paraffin, EVA and tackifying resin is poor, and the hot melt adhesive can have layering in the use process, so that the adhesive loses flame retardant effect.
The hot melt adhesive produced by adopting the solid phosphate flame retardant has no obvious layering phenomenon, but has unstable flame retardant effect after coating, so the flame retardant has better compatibility with wax, EVA and tackifying resin in the hot melt adhesive through modification and adjustment of maleic anhydride grafted polypropylene wax. The machine has no phenomena of blocking, corrosion, layering and unstable performance of comparative examples 1-6, has excellent machine performance, and has the advantages of good flame retardant property, good compatibility, good bonding property and environmental protection.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (8)
1. The EVA flame-retardant hot melt adhesive is characterized by being prepared from the following raw materials in parts by weight: 5-10 parts of Fischer-Tropsch wax, 30-40 parts of ethylene-vinyl acetate copolymer, 30-50 parts of hydrogenated petroleum resin, 10-30 parts of flame retardant, 0.1-10 parts of maleic anhydride grafted polypropylene and 0.1-1 part of antioxidant; the flame retardant is a phosphate flame retardant, and the phosphate flame retardant is a phosphate halogen-free flame retardant PX-200 of Japanese eight.
2. The EVA-based flame-retardant hot melt adhesive according to claim 1, wherein the hydrogenated petroleum resin is one or a mixture of two or more of DCPD hydrogenated petroleum resin, C5 hydrogenated petroleum resin, C9 hydrogenated petroleum resin, C5C9 copolymerized hydrogenated petroleum resin.
3. The EVA-based flame-retardant hot melt adhesive according to claim 1, wherein the ethylene-vinyl acetate copolymer has a VA content of 19 to 33 and a melt index of 20g/10min to 400g/10min.
4. The EVA-based flame-retardant hot melt adhesive according to claim 3, wherein the ethylene-vinyl acetate copolymer has VA content of two or more of 19, 28, 33.
5. The EVA-based flame-retardant hot melt adhesive of claim 4, wherein the maleic anhydride grafted polypropylene has a softening point of 135 ℃ and a melt index of 22g/10min.
6. The EVA-based flame-retardant hot melt adhesive of claim 5, wherein the antioxidant is a mixture of antioxidant AT-168 and antioxidant 1010; the melting point of the phosphate halogen-free flame retardant PX-200 of Japanese Daba is 100 ℃, the boiling point is 260 ℃, and the softening point is 90-110 ℃.
7. A method for preparing the EVA-based flame-retardant hot melt adhesive according to any one of claims 1 to 6, characterized by comprising the steps of:
mixing Fischer-Tropsch wax and antioxidant under stirring at 120-140 deg.C, stirring until Fischer-Tropsch wax is melted, sequentially adding flame retardant, ethylene-vinyl acetate copolymer, maleic anhydride grafted polypropylene and hydrogenated petroleum resin, stirring until raw materials are melted, reacting under vacuum for 20-40min, granulating, and packaging.
8. The method for preparing an EVA type flame retardant hot melt adhesive according to claim 7, wherein a flame retardant is added, after the flame retardant is melted, an ethylene-vinyl acetate copolymer, a maleic anhydride grafted polypropylene and a part of hydrogenated petroleum resin are added, and after stirring until the melt, another part of hydrogenated petroleum resin is added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102108269A (en) * | 2009-12-24 | 2011-06-29 | 上海理日化工新材料有限公司 | Ethylene-vinylacetate copolymer resin hot melt adhesive with high melting point, fast curing and low viscosity |
| WO2015184819A1 (en) * | 2014-06-04 | 2015-12-10 | 福州大学 | Eva hot-melt adhesive material and method for preparation thereof |
| CN113621325A (en) * | 2021-08-09 | 2021-11-09 | 中山诚泰化工科技有限公司 | Flame-retardant hot melt adhesive and preparation method thereof |
| CN114456753A (en) * | 2021-12-31 | 2022-05-10 | 广东欣涛新材料科技股份有限公司 | Flame-retardant hot melt adhesive and preparation method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102108269A (en) * | 2009-12-24 | 2011-06-29 | 上海理日化工新材料有限公司 | Ethylene-vinylacetate copolymer resin hot melt adhesive with high melting point, fast curing and low viscosity |
| WO2015184819A1 (en) * | 2014-06-04 | 2015-12-10 | 福州大学 | Eva hot-melt adhesive material and method for preparation thereof |
| CN113621325A (en) * | 2021-08-09 | 2021-11-09 | 中山诚泰化工科技有限公司 | Flame-retardant hot melt adhesive and preparation method thereof |
| CN114456753A (en) * | 2021-12-31 | 2022-05-10 | 广东欣涛新材料科技股份有限公司 | Flame-retardant hot melt adhesive and preparation method thereof |
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| CN115353831A (en) | 2022-11-18 |
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