A fireproof biomass molded floor and its production process

Abstract

The present invention discloses a fireproof biomass molded floor and its production process, which includes a sound-absorbing foam layer, a base layer, a middle layer, a printing film layer, a wear-resistant layer, and a UV coating layer arranged in sequence from bottom to top; when the floor burns, the double hydroxides on the heat-resistant flame retardant in the base layer decompose to generate water vapor to dilute oxygen and combustible gases. At the same time, zinc, magnesium, and aluminum oxides can be generated with the zinc organic framework, and cooperate with the phosphates generated by the combustion of the organic phosphorus in the organic framework to form a dense carbon layer. Moreover, the silicone structure can generate stable Si-O and Si-C structures, and further strengthen the isolation effect of the carbon layer in compound with boron, generating ammonia and nitrogen dioxide gases to further dilute oxygen and combustible gases. The UV coating layer can form a dense carbonized layer on the floor surface during combustion, and cooperate with the flame retardant in the base layer to carry out flame retardancy both inside and outside the template, greatly improving the flame retardancy efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of flame-retardant board preparation, and particularly relates to a fireproof biomass molded floor and its production process. Background Art

[0002] Floor decoration materials are an important element in the architectural decoration industry. Different types of floor decoration materials have very different performances and can greatly affect various aspects such as the comfort, aesthetics, and safety of interior design. With the improvement of people's living standards and the rapid development of social production technology, the variety of floor decoration materials is increasing, and their functions are constantly enhanced. People also continuously put forward higher requirements for the practicality, decoration, and environmental protection of floor decoration materials. Biomass molded floors are a commonly used type of floor decoration material. However, since wood fibers need to be added during their preparation, these floors cannot prevent fire, which has hindered the development of biomass molded floors. Summary of the Invention

[0003] The purpose of the present invention is to provide a fireproof biomass molded floor and its production process, which solves the problem of poor flame retardancy of biomass molded floors at the present stage.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] A fireproof biomass molded floor includes a sound-absorbing foam layer, a base layer, a middle layer, a printing film layer, a wear-resistant layer, and a UV coating layer, which are arranged in sequence from bottom to top;

[0006] Locking devices are installed on the sound-absorbing foam layer and the base layer for splicing between the floors, and adhesives are coated on the sound-absorbing foam layer and the base layer;

[0007] The base layer is made of the following raw materials in parts by weight: 90 - 100 parts of PVC resin powder type 5, 90 - 100 parts of PVC resin powder type 7, 50 - 60 parts of wood fiber, 200 - 220 parts of calcium carbonate, 100 - 150 parts of recycled material, 10 - 15 parts of flame retardant enhancer, 10 - 15 parts of stabilizer, 20 - 25 parts of foaming regulator, 1 - 3 parts of internal lubricant, 1 - 3 parts of external lubricant, 0.5 - 1 part of white foaming agent, 0.5 - 1 part of yellow foaming agent, 3 - 5 parts of 2-hydroxyethyl acrylate, and 1 - 1.5 parts of oxidized wax;

[0008] The middle layer is made of the following raw materials in parts by weight: 100 - 120 parts of PVC resin powder type 5, 400 - 500 parts of calcium carbonate, 35 - 45 parts of dioctyl terephthalate, and 3 - 5 parts of stabilizer;

[0009] The stabilizer is the same as the stabilizer used in the base layer;

[0010] The wear-resistant layer is made of surface paper impregnated with melamine resin and added with aluminum oxide;

[0011] The UV coating layer is made of the following raw materials in parts by weight: 20-30 parts of modifier, 40-50 parts of methyl methacrylate, 10-15 parts of butyl methacrylate, 5-8 parts of photoinitiator, 0.3-0.5 parts of leveling agent and 20-30 parts of toluene.

[0012] The flame retardant strengthening agent is prepared by the following steps:

[0013] Step A1: Mix 4-formylphenylboronic acid, 2-aminobenzimidazole and ethanol evenly, and react at a rotation speed of 120-150 r / min and a temperature of 75-78 °C for 20-25 h. Then cool down to 20-25 °C, add DOPO, and continue to react for 10-15 h to obtain intermediate 1;

[0014] Step A2: Mix trimethylolpropane monoallyl ether, intermediate 1 and toluene evenly, introduce nitrogen protection, and reflux and react at a rotation speed of 60-80 r / min and a temperature of 115-120 °C for 3-5 h to obtain intermediate 2. Mix intermediate 2, tetramethyltetrahydrocyclotetrasiloxane and DMF evenly, stir and add chloroplatinic acid at a rotation speed of 150-200 r / min and a temperature of 50-60 °C, and react for 10-15 h to obtain intermediate 3;

[0015] Step A3: Mix intermediate 3, zinc nitrate hexahydrate and DMF, stir at a rotation speed of 300-500 r / min and a temperature of 25-30 °C for 1-1.5 h, then age for 20-25 h, filter to remove the filtrate, disperse the substrate in deionized water, add magnesium chloride hexahydrate, aluminum chloride nonahydrate, sodium hydroxide and ammonium fluoride, and react at a rotation speed of 120-150 r / min and a temperature of 110-115 °C for 10-15 h. Then filter and wash to neutral to obtain the flame retardant strengthening agent.

[0016] The molar ratio of 4-formylphenylboronic acid, 2-aminobenzimidazole and DOPO in Step A1 is 1:1:1.

[0017] The molar ratio of trimethylolpropane monoallyl ether and intermediate 1 in Step A2 is 1:1, the molar ratio of intermediate 2 and tetramethyltetrahydrocyclotetrasiloxane is 4:1, and the dosage of chloroplatinic acid is 1‰ of the mass of tetramethyltetrahydrocyclotetrasiloxane.

[0018] The molar ratio of intermediate 3, zinc nitrate hexahydrate, magnesium chloride hexahydrate, aluminum chloride nonahydrate, sodium hydroxide and ammonium fluoride in Step A3 is 6:18:15:5:60:20.

[0019] The modifier is prepared by the following steps:

[0020] Step B1: Mix hydroxyethyl methacrylate, aluminum trichloride and DMF evenly. Under the conditions of a rotation speed of 120 - 150 r / min and a temperature of 80 - 85 °C, stir and add epichlorohydrin, and react for 1 - 1.5 h. Then add sodium hydroxide solution and continue to react for 2 - 3 h to obtain intermediate 4;

[0021] Step B2: Mix intermediate 4, 1,3 - bis(aminopropyl)tetramethyldisiloxane and DMF evenly. Under the conditions of a rotation speed of 150 - 200 r / min, a temperature of 30 - 40 °C and a pH value of 9 - 10, react for 6 - 8 h to obtain intermediate 5. Mix intermediate 5, triethylamine and DMF evenly. Under the conditions of a rotation speed of 60 - 80 r / min and a temperature of 60 - 65 °C, add diphenyl chlorophosphate and react for 20 - 25 h to obtain the modifier.

[0022] In step B1, the molar ratio of hydroxyethyl methacrylate, aluminum trichloride, epichlorohydrin and sodium hydroxide solution is 1 mol: 8.5 mmol: 1 mol: 160 mL, and the mass fraction of the sodium hydroxide solution is 35%.

[0023] In step B2, the molar ratio of intermediate 4 and 1,3 - bis(aminopropyl)tetramethyldisiloxane is 4:1, and the molar ratio of intermediate 5, triethylamine and diphenyl chlorophosphate is 1:4:4.

[0024] The production process of the fire - resistant biomass molded floor specifically includes the following steps:

[0025] Overlap and mold the wear - resistant layer, printing film layer, middle layer and base layer from top to bottom in sequence. Install a locking buckle and coat an adhesive between the base layer and the sound - proof foam layer for bonding. Coat a UV coating layer on the surface of the wear - resistant layer and cure it by ultraviolet light to obtain the fire - resistant biomass molded floor.

[0026] Advantages of the present invention: A fireproof biomass molded floor prepared by the present invention comprises a sound-absorbing foam layer, a base layer, a middle layer, a printing film layer, a wear-resistant layer, and a UV coating layer arranged in sequence from bottom to top. The base layer is made from the following raw materials: PVC resin powder type 5, PVC resin powder type 7, wood fiber, calcium carbonate, recycled material, flame retardant enhancer, stabilizer, foaming regulator, internal lubricant, external lubricant, white foaming agent, yellow foaming agent, 2-hydroxyethyl acrylate, and oxidized wax. The UV coating layer is made from the following raw materials: modifier, methyl methacrylate, butyl methacrylate, photoinitiator, leveling agent, and toluene. The flame retardant enhancer uses 4-formylphenylboronic acid and 2-aminobenzimidazole as raw materials, causing the aldehyde group on 4-formylphenylboronic acid to react with the amino group on 2-aminobenzimidazole to form an N=C bond, and then reacting with DOPO, causing the N=C bond to react with the P-H bond on DOPO to obtain intermediate 1. Reacting trimethylolpropane monoallyl ether with intermediate 1 causes the hydroxyl group on trimethylolpropane monoallyl ether to react with the boronic acid group on intermediate 1 to obtain intermediate 2. Reacting intermediate 2 with tetramethyltetrahydrocyclotetrasiloxane under the action of chloroplatinic acid causes the double bond on intermediate 2 to react with the Si-H bond on tetramethyltetrahydrocyclotetrasiloxane to obtain intermediate 3. Reacting intermediate 3 with zinc nitrate hexahydrate causes the imidazole group on intermediate 3 to coordinate with zinc ions to form a metal-organic framework structure, and then adding magnesium chloride hexahydrate and aluminum chloride nonahydrate to form a double hydroxide loading on the surface of the metal-organic framework to obtain the flame retardant enhancer. When the floor burns, the double hydroxide on the flame retardant enhancer in the base layer decomposes when heated to generate water vapor to dilute oxygen and combustible gases. At the same time, zinc, magnesium, and aluminum oxides can be generated with the zinc organic framework, and phosphate generated by the combustion of organic phosphorus in the organic framework forms a dense carbon layer. Moreover, the organosilicon structure can generate stable Si-O and Si-C structures, which are further compounded with boron to enhance the isolation effect of the carbon layer, and ammonia and nitrogen dioxide gases are generated to further dilute oxygen and combustible gases. The modifier reacts methyl methacrylate-2-hydroxyethyl and epichlorohydrin, causing the hydroxyl group on methyl methacrylate-2-hydroxyethyl to react with the epoxy group on epichlorohydrin, and then forming a new epoxy group by ring closure under alkaline conditions to obtain intermediate 4. Reacting intermediate 4 with 1,3-bis(aminopropyl)tetramethyldisiloxane causes the epoxy group on intermediate 4 to react with the amino group on 1,3-bis(aminopropyl)tetramethyldisiloxane to form a new hydroxyl group to obtain intermediate 5. Reacting intermediate 5 with diphenyl chlorophosphate under the action of triethylamine causes the hydroxyl group on intermediate 5 to react with the P-Cl bond on diphenyl chlorophosphate to obtain the modifier. The modifier, methyl methacrylate, and butyl methacrylate are subjected to free radical polymerization under light to make the polymer molecules into a dense grid-like shape, which can form a dense carbonized layer on the surface of the floor during combustion and cooperate with the flame retardant enhancer in the base layer to carry out flame retardancy both inside and outside the template, greatly improving the flame retardancy efficiency. Detailed implementation mode

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] Embodiment 1

[0029] A fireproof biomass molded floor, comprising a soundproof foam layer, a base layer, a middle layer, a printing film layer, a wear-resistant layer and a UV coating layer, which are arranged in sequence from bottom to top;

[0030] The soundproof foam layer and the base layer are provided with locking buttons for splicing between the floors, and the soundproof foam layer and the base layer are coated with an adhesive, and the adhesive is 194CPVC glue;

[0031] The base layer is made of the following raw materials in parts by weight: 90 parts of PVC resin powder type 5, 90 parts of PVC resin powder type 7, 50 parts of wood fiber, 200 parts of calcium carbonate, 100 parts of recycled material, 10 parts of flame retardant enhancer, 10 parts of stabilizer, 20 parts of foaming regulator, 1 part of internal lubricant, 1 part of external lubricant, 0.5 part of white foaming agent, 0.5 part of yellow foaming agent, 3 parts of 2-hydroxyethyl acrylate and 1 part of oxidized wax;

[0032] The stabilizer is calcium-zinc stabilizer RUP-108, the foaming regulator is ZB-530, the internal lubricant is G16, the external lubricant is HD-70S, the white foaming agent is MS-107, and the yellow foaming agent is D60;

[0033] The middle layer is made of the following raw materials in parts by weight: 100 parts of PVC resin powder type 5, 400 parts of calcium carbonate, 35 parts of dioctyl terephthalate and 3 parts of stabilizer;

[0034] The stabilizer is the same as the stabilizer used in the base layer;

[0035] The wear-resistant layer is made of surface paper impregnated with melamine resin added with aluminum oxide;

[0036] The UV coating layer is made of the following raw materials in parts by weight: 20 parts of modifier, 40 parts of methyl methacrylate, 10 parts of butyl methacrylate, 5 parts of photoinitiator, 0.3 part of leveling agent and 20 parts of toluene.

[0037] The photoinitiator is 1173, and the leveling agent is BYK-320.

[0038] The flame retardant enhancer is prepared by the following steps:

[0039] Step A1: Mix 4-formylphenylboronic acid, 2-aminobenzimidazole and ethanol evenly. Under the conditions of a rotation speed of 120 r / min and a temperature of 75 °C, react for 20 h, then cool down to 20 °C, add DOPO, and continue to react for 10 h to obtain Intermediate 1;

[0040] Step A2: Mix trimethylolpropane monoallyl ether, Intermediate 1 and toluene evenly, introduce nitrogen for protection. Under the conditions of a rotation speed of 60 r / min and a temperature of 115 °C, reflux and react for 3 h to obtain Intermediate 2. Mix Intermediate 2, tetramethyltetrahydrocyclotetrasiloxane and DMF evenly. Under the conditions of a rotation speed of 150 r / min and a temperature of 50 °C, stir and add chloroplatinic acid, and react for 10 h to obtain Intermediate 3;

[0041] Step A3: Mix Intermediate 3, zinc nitrate hexahydrate and DMF. Under the conditions of a rotation speed of 300 r / min and a temperature of 25 °C, stir for 1 h, then age for 20 h, filter to remove the filtrate. Disperse the substrate in deionized water, add magnesium chloride hexahydrate, aluminum chloride nonahydrate, sodium hydroxide and ammonium fluoride. Under the conditions of a rotation speed of 120 r / min and a temperature of 110 °C, react for 10 h, then filter and wash until neutral to obtain the flame retardant reinforcing agent.

[0042] The molar ratio of 4-formylphenylboronic acid, 2-aminobenzimidazole and DOPO described in Step A1 is 1:1:1.

[0043] The molar ratio of trimethylolpropane monoallyl ether and Intermediate 1 described in Step A2 is 1:1. The molar ratio of Intermediate 2 and tetramethyltetrahydrocyclotetrasiloxane is 4:1. The dosage of chloroplatinic acid is 1‰ of the mass of tetramethyltetrahydrocyclotetrasiloxane.

[0044] The molar ratio of Intermediate 3, zinc nitrate hexahydrate, magnesium chloride hexahydrate, aluminum chloride nonahydrate, sodium hydroxide and ammonium fluoride described in Step A3 is 6:18:15:5:60:20.

[0045] The modifier is prepared by the following steps:

[0046] Step B1: Mix 2-hydroxyethyl methacrylate, aluminum trichloride and DMF evenly. Under the conditions of a rotation speed of 120 r / min and a temperature of 80 °C, stir and add epichlorohydrin, react for 1 h, then add sodium hydroxide solution and continue to react for 2 h to obtain Intermediate 4;

[0047] Step B2: Mix intermediate 4, 1,3-bis(aminopropyl)tetramethyldisiloxane, and DMF evenly. React for 6 h under the conditions of a rotation speed of 150 r / min, a temperature of 30 °C, and a pH value of 9 to obtain intermediate 5. Mix intermediate 5, triethylamine, and DMF evenly, and add diphenyl chlorophosphate under the conditions of a rotation speed of 60 r / min and a temperature of 60 °C, and react for 20 h to obtain the modifier.

[0048] For the hydroxyethyl methacrylate, aluminum trichloride, epichlorohydrin, and sodium hydroxide solution described in Step B1, the ratio is 1 mol: 8.5 mmol: 1 mol: 160 mL, and the mass fraction of the sodium hydroxide solution is 35%.

[0049] For the intermediate 4 and 1,3-bis(aminopropyl)tetramethyldisiloxane described in Step B2, the molar ratio is 4:1, and for intermediate 5, triethylamine, and diphenyl chlorophosphate, the molar ratio is 1:4:4.

[0050] The production process of this fireproof biomass molded floor specifically includes the following steps:

[0051] Overlap and mold the wear-resistant layer, printing film layer, middle layer, and base layer from top to bottom in sequence. Install a locking buckle between the base layer and the soundproof foam layer and coat with an adhesive for bonding. Coat a UV coating layer on the surface of the wear-resistant layer and cure it with ultraviolet light to obtain the fireproof biomass molded floor.

[0052] Example 2

[0053] A fireproof biomass molded floor includes a soundproof foam layer, a base layer, a middle layer, a printing film layer, a wear-resistant layer, and a UV coating layer arranged in sequence from bottom to top;

[0054] The soundproof foam layer and the base layer are equipped with locking buckles for splicing between the floors, and the soundproof foam layer and the base layer are coated with an adhesive, and the adhesive is 714 CPVC glue;

[0055] The base layer is made of the following raw materials in parts by weight: 90 parts of PVC resin powder type 5, 90 parts of PVC resin powder type 7, 55 parts of wood fiber, 210 parts of calcium carbonate, 120 parts of recycled material, 13 parts of flame retardant enhancer, 11 parts of stabilizer, 20 parts of foaming regulator, 2 parts of internal lubricant, 1.28 parts of external lubricant, 0.84 part of white foaming agent, 0.84 part of yellow foaming agent, 3.6 parts of 2-hydroxyethyl acrylate, and 1.2 parts of oxidized wax;

[0056] The stabilizer is calcium-zinc stabilizer RUP-108L, the foaming regulator is ZB-750, the internal lubricant is G60, the external lubricant is G70L, the white foaming agent is MS-109, and the yellow foaming agent is DF801;

[0057] The middle layer is made of the following raw materials by weight: 100 parts of PVC resin powder type 5, 450 parts of calcium carbonate, 39 parts of dioctyl terephthalate, and 4 parts of stabilizer;

[0058] The stabilizer used is the same as that for the base layer;

[0059] The wear-resistant layer is made by impregnating surface paper added with aluminum trioxide with melamine resin;

[0060] The UV coating layer is made of the following raw materials by weight: 25 parts of modifier, 45 parts of methyl methacrylate, 13 parts of butyl methacrylate, 6 parts of photoinitiator, 0.4 part of leveling agent, and 25 parts of toluene.

[0061] The photoinitiator used is 184, and the leveling agent is BYK-331.

[0062] The flame retardant strengthening agent is prepared by the following steps:

[0063] Step A1: Mix 4-formylphenylboronic acid, 2-aminobenzimidazole, and ethanol evenly. React at a rotation speed of 120 r / min and a temperature of 78 °C for 25 h, then cool down to 20 °C, add DOPO, and continue to react for 13 h to obtain Intermediate 1;

[0064] Step A2: Mix trimethylolpropane monoallyl ether, Intermediate 1, and toluene evenly, introduce nitrogen for protection, and reflux and react at a rotation speed of 60 r / min and a temperature of 120 °C for 4 h to obtain Intermediate 2. Mix Intermediate 2, tetramethyltetrahydrocyclotetrasiloxane, and DMF evenly, stir at a rotation speed of 200 r / min and a temperature of 55 °C, and add chloroplatinic acid to react for 13 h to obtain Intermediate 3;

[0065] Step A3: Mix Intermediate 3, zinc nitrate hexahydrate, and DMF, stir at a rotation speed of 300 r / min and a temperature of 28 °C for 1.3 h, then age for 25 h, filter to remove the filtrate. Disperse the substrate in deionized water, add magnesium chloride hexahydrate, aluminum chloride nonahydrate, sodium hydroxide, and ammonium fluoride, and react at a rotation speed of 120 r / min and a temperature of 113 °C for 15 h, then filter and wash until neutral to obtain the flame retardant strengthening agent.

[0066] The molar ratio of 4-formylphenylboronic acid, 2-aminobenzimidazole, and DOPO in Step A1 is 1:1:1.

[0067] The molar ratio of trimethylolpropane monoallyl ether and Intermediate 1 in Step A2 is 1:1, the molar ratio of Intermediate 2 and tetramethyltetrahydrocyclotetrasiloxane is 4:1, and the dosage of chloroplatinic acid is 1‰ of the mass of tetramethyltetrahydrocyclotetrasiloxane.

[0068] The molar ratio of the intermediate 3, zinc nitrate hexahydrate, magnesium chloride hexahydrate, aluminum chloride nonahydrate, sodium hydroxide and ammonium fluoride described in step A3 is 6:18:15:5:60:20.

[0069] The modifier is prepared by the following steps:

[0070] Step B1: Mix hydroxyethyl methacrylate, aluminum trichloride and DMF evenly. Under the conditions of a rotation speed of 120 r / min and a temperature of 83 °C, stir and add epichlorohydrin. After reacting for 1 - 1.5 h, add sodium hydroxide solution and continue to react for 3 h to obtain intermediate 4;

[0071] Step B2: Mix intermediate 4, 1,3 - bis(aminopropyl)tetramethyldisiloxane and DMF evenly. Under the conditions of a rotation speed of 150 r / min, a temperature of 35 °C and a pH value of 10, react for 7 h to obtain intermediate 5. Mix intermediate 5, triethylamine and DMF evenly. Under the conditions of a rotation speed of 60 r / min and a temperature of 65 °C, add diphenyl chlorophosphate and react for 25 h to obtain the modifier.

[0072] The molar ratio of hydroxyethyl methacrylate, aluminum trichloride, epichlorohydrin and sodium hydroxide solution in step B1 is 1 mol:8.5 mmol:1 mol:160 mL, and the mass fraction of the sodium hydroxide solution is 35%.

[0073] The molar ratio of intermediate 4 and 1,3 - bis(aminopropyl)tetramethyldisiloxane in step B2 is 4:1, and the molar ratio of intermediate 5, triethylamine and diphenyl chlorophosphate is 1:4:4.

[0074] The production process of the fire - proof biomass molded floor specifically includes the following steps:

[0075] Overlap and mold the wear - resistant layer, printing film layer, middle layer and base layer from top to bottom in sequence. Install a locking buckle between the base layer and the sound - proof foam layer and coat with an adhesive for bonding. Coat a UV coating layer on the surface of the wear - resistant layer and cure it by ultraviolet light to obtain the fire - proof biomass molded floor.

[0076] Example 3

[0077] A fire - proof biomass molded floor, comprising a sound - proof foam layer, a base layer, a middle layer, a printing film layer, a wear - resistant layer and a UV coating layer which are arranged in sequence from bottom to top;

[0078] The sound - proof foam layer and the base layer are provided with locking buckles for splicing between floors, and the sound - proof foam layer and the base layer are coated with an adhesive, and the adhesive is HY - T160;

[0079] The base layer is made from the following raw materials in parts by weight: 100 parts of PVC resin powder type 5, 100 parts of PVC resin powder type 7, 60 parts of wood fiber, 220 parts of calcium carbonate, 150 parts of recycled material, 15 parts of flame retardant enhancer, 15 parts of stabilizer, 25 parts of foaming regulator, 3 parts of internal lubricant, 3 parts of external lubricant, 1 part of white foaming agent, 0.5 - 1 part of yellow foaming agent, 5 parts of 2-hydroxyethyl acrylate, and 1.5 parts of oxidized wax;

[0080] The stabilizer is calcium-zinc stabilizer RUP-151, the foaming regulator is P-530A, the internal lubricant is LG10, the external lubricant is G74, the white foaming agent is MS-110, and the yellow foaming agent is BTC-108;

[0081] The middle layer is made from the following raw materials in parts by weight: 120 parts of PVC resin powder type 5, 500 parts of calcium carbonate, 45 parts of dioctyl terephthalate, and 5 parts of stabilizer;

[0082] The stabilizer is the same as that used in the base layer;

[0083] The wear-resistant layer is made by impregnating surface paper added with aluminum oxide with melamine resin;

[0084] The UV coating layer is made from the following raw materials in parts by weight: 30 parts of modifier, 50 parts of methyl methacrylate, 15 parts of butyl methacrylate, 8 parts of photoinitiator, 0.5 part of leveling agent, and 30 parts of toluene.

[0085] The photoinitiator is TPO, and the leveling agent is BYK-341.

[0086] The flame retardant enhancer is prepared by the following steps:

[0087] Step A1: Mix 4-formylphenylboronic acid, 2-aminobenzimidazole, and ethanol evenly. React at a rotation speed of 150 r / min and a temperature of 78 °C for 25 h, then cool to 25 °C, add DOPO, and continue to react for 15 h to obtain intermediate 1;

[0088] Step A2: Mix trimethylolpropane monoallyl ether, intermediate 1, and toluene evenly, introduce nitrogen protection, and reflux and react at a rotation speed of 80 r / min and a temperature of 120 °C for 5 h to obtain intermediate 2. Mix intermediate 2, tetramethyltetrahydrocyclotetrasiloxane, and DMF evenly, stir and add chloroplatinic acid at a rotation speed of 200 r / min and a temperature of 60 °C, and react for 15 h to obtain intermediate 3;

[0089] Step A3: Mix intermediate 3, zinc nitrate hexahydrate and DMF, stir at a rotation speed of 500 r / min and a temperature of 30 °C for 1.5 h, then age for 25 h. Filter to remove the filtrate, disperse the substrate in deionized water, add magnesium chloride hexahydrate, aluminum chloride nonahydrate, sodium hydroxide and ammonium fluoride, and react at a rotation speed of 150 r / min and a temperature of 115 °C for 15 h. Then filter and wash until neutral to obtain the flame retardant strengthening agent.

[0090] The molar ratio of 4-formylphenylboronic acid, 2-aminobenzimidazole and DOPO described in Step A1 is 1:1:1.

[0091] The molar ratio of trimethylolpropane monoallyl ether and intermediate 1 described in Step A2 is 1:1, the molar ratio of intermediate 2 and tetramethyltetrahydrocyclotetrasiloxane is 4:1, and the dosage of chloroplatinic acid is 1‰ of the mass of tetramethyltetrahydrocyclotetrasiloxane.

[0092] The molar ratio of intermediate 3, zinc nitrate hexahydrate, magnesium chloride hexahydrate, aluminum chloride nonahydrate, sodium hydroxide and ammonium fluoride described in Step A3 is 6:18:15:5:60:20.

[0093] The modifier is prepared by the following steps:

[0094] Step B1: Mix 2-hydroxyethyl methacrylate, aluminum trichloride and DMF evenly, stir and add epichlorohydrin at a rotation speed of 150 r / min and a temperature of 85 °C, react for 1.5 h, then add sodium hydroxide solution and continue to react for 3 h to obtain intermediate 4;

[0095] Step B2: Mix intermediate 4, 1,3-bis(aminopropyl)tetramethyldisiloxane and DMF evenly, react at a rotation speed of 200 r / min, a temperature of 40 °C and a pH value of 10 for 8 h to obtain intermediate 5. Mix intermediate 5, triethylamine and DMF evenly, add diphenyl chlorophosphate at a rotation speed of 80 r / min and a temperature of 65 °C, and react for 25 h to obtain the modifier.

[0096] The molar ratio of 2-hydroxyethyl methacrylate, aluminum trichloride, epichlorohydrin and sodium hydroxide solution in Step B1 is 1 mol:8.5 mmol:1 mol:160 mL, and the mass fraction of the sodium hydroxide solution is 35%.

[0097] The molar ratio of intermediate 4 and 1,3-bis(aminopropyl)tetramethyldisiloxane in Step B2 is 4:1, and the molar ratio of intermediate 5, triethylamine and diphenyl chlorophosphate is 1:4:4.

[0098] The production process of this fireproof biomass molded floor specifically includes the following steps:

[0099] Overlap and mold press a wear-resistant layer, a printing film layer, a middle layer, and a base layer in sequence from top to bottom. Install a lock catch between the base layer and a sound-absorbing foam layer and coat with an adhesive for bonding. Coat a UV coating layer on the surface of the wear-resistant layer and cure it under ultraviolet light to obtain a fireproof biomass molded floor.

[0100] Comparative Example 1

[0101] Compared with Example 1, in this comparative example, intermediate 3, zinc nitrate hexahydrate, and DMF were mixed, stirred at a rotation speed of 500 r / min and a temperature of 30 °C for 1.5 h, aged for 25 h, and the filtrate was removed by filtration. The obtained substrate was used to replace the flame retardant enhancer, and the remaining steps were the same.

[0102] Comparative Example 2

[0103] Compared with Example 1, in this comparative example, magnesium chloride hexahydrate, aluminum chloride nonahydrate, sodium hydroxide, and ammonium fluoride were reacted at a rotation speed of 150 r / min and a temperature of 115 °C for 15 h, filtered and washed to neutrality, and the obtained product was used to replace the flame retardant enhancer, and the remaining steps were the same.

[0104] Comparative Example 3

[0105] Compared with Example 1, in this comparative example, magnesium hydroxide was used to replace the flame retardant enhancer, and the remaining steps were the same.

[0106] Comparative Example 4

[0107] Compared with Example 1, in this comparative example, no modifier was added, and the remaining steps were the same.

[0108] Comparative Example 5

[0109] Compared with Example 1, in this comparative example, 2-hydroxyethyl methacrylate was used to replace intermediate 5, and the remaining steps were the same.

[0110] The plates without the assembled sound-absorbing foam layer prepared in Examples 1-3 and Examples 1-5 were made into specimens of 130 mm × 7.5 mm × 12 mm, and the limiting oxygen index was detected according to the standard of ASTM D2863. According to the standard of GB / T 2408-2008, specimens of 130 mm × 15 mm × 12 mm were made to detect the vertical burning grade. The test results are shown in the following table.

[0111]

[0112] It can be seen from the above table that this application has a good flame retardant effect.

[0113] The above content is only an example and illustration of the concept of the present invention. Those skilled in the art to which the present technology pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution. As long as they do not deviate from the concept of the invention or exceed the scope defined by this claims, they shall fall within the protection scope of the present invention.

Claims

1. A fireproof biomass molded floor, characterized in that: It includes a soundproof foam layer, a base layer, a middle layer, a printing film layer, a wear-resistant layer and a UV coating layer which are arranged from bottom to top in sequence; The soundproof foam layer and the base layer are installed with buckles for splicing between the floors, and the soundproof foam layer and the base layer are coated with adhesives; The base layer is made of the following raw materials in parts by weight: 90-100 parts of PVC resin powder type 5, 90-100 parts of PVC resin powder type 7, 50-60 parts of wood fiber, 200-220 parts of calcium carbonate, 100-150 parts of recycled material, 10-15 parts of flame retardant enhancer, 10-15 parts of stabilizer, 20-25 parts of foaming regulator, 1-3 parts of internal lubricant, 1-3 parts of external lubricant, 0.5-1 part of white foaming agent, 0.5-1 part of yellow foaming agent, 3-5 parts of 2-hydroxyethyl acrylate and 1-1.5 parts of oxidized wax; The middle layer is made of the following raw materials in parts by weight: 100-120 parts of PVC resin powder type 5, 400-500 parts of calcium carbonate, 35-45 parts of dioctyl terephthalate and 3-5 parts of stabilizer; The UV coating layer is made of the following raw materials in parts by weight: 20-30 parts of modifier, 40-50 parts of methyl methacrylate, 10-15 parts of butyl methacrylate, 5-8 parts of photoinitiator, 0.3-0.5 part of leveling agent and 20-30 parts of toluene; The flame retardant enhancer is prepared by the following steps: Step A1: Mix 4-formylphenylboronic acid, 2-aminobenzimidazole and ethanol and react, then add DOPO and continue to react to obtain intermediate 1; Step A2: Mix trimethylolpropane monoallyl ether, intermediate 1 and toluene and reflux to react to obtain intermediate 2. Mix intermediate 2, tetramethyltetrahydrocyclotetrasiloxane and DMF, stir and add chloroplatinic acid, and react to obtain intermediate 3; Step A3: Mix intermediate 3, zinc nitrate hexahydrate and DMF, stir and treat, then carry out aging treatment, filter to remove the filtrate, disperse the substrate in deionized water, add magnesium chloride hexahydrate, aluminum chloride nonahydrate, sodium hydroxide and ammonium fluoride, react, filter and wash to neutrality to obtain the flame retardant enhancer; The modifier is prepared by the following steps: Step B1: Mix 2-hydroxyethyl methacrylate, aluminum trichloride and DMF, stir and add epichlorohydrin, react, then add sodium hydroxide solution and continue to react to obtain intermediate 4; Step B2: Mix intermediate 4, 1,3-bis(aminopropyl)tetramethyldisiloxane and DMF to react to obtain intermediate 5. Mix intermediate 5, triethylamine and DMF evenly, add diphenyl chlorophosphate and react to obtain the modifier.

2. The fireproof biomass molded floor according to claim 1, wherein: The molar ratio of 4-formylphenylboronic acid, 2-aminobenzimidazole and DOPO in Step A1 is 1:1:

1.

3. The fireproof biomass molded floor according to claim 1, wherein: The molar ratio of trimethylolpropane monoallyl ether and intermediate 1 in Step A2 is 1:1, and the molar ratio of intermediate 2 and tetramethyltetrahydrocyclotetrasiloxane is 4:

1.

4. A fireproof biomass molded floor according to claim 1, characterized in that: The molar ratio of intermediate 3, zinc nitrate hexahydrate, magnesium chloride hexahydrate, aluminum chloride nonahydrate, sodium hydroxide and ammonium fluoride in Step A3 is 6:18:15:5:60:

20.

5. A fireproof biomass molded floor according to claim 1, characterized in that: The molar ratio of hydroxyethyl methacrylate, aluminum trichloride, epichlorohydrin and sodium hydroxide solution described in step B1 is 1 mol: 8.5 mmol: 1 mol: 160 mL.

6. The fireproof biomass molded floor according to claim 1, wherein: The molar ratio of intermediate 4 and 1,3-bis(aminopropyl)tetramethyldisiloxane described in step B2 is 4:1, and the molar ratio of intermediate 5, triethylamine and diphenyl chlorophosphate is 1:4:

4.

7. The production process of a fireproof biomass molded floor according to claim 1, characterized in that: Specifically, it includes the following steps: Overlap and mold the wear-resistant layer, printing film layer, intermediate layer and base layer from top to bottom in sequence, install a lock between the base layer and the soundproof foam layer and coat with an adhesive for bonding, coat a UV coating layer on the surface of the wear-resistant layer and cure it by ultraviolet light to obtain a fireproof biomass molded floor.

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