Foaming material for floor sound insulation board and preparation method of foaming material

Abstract

The invention discloses a foaming material for a floor sound insulation board and a preparation method of the foaming material. Comprising the following raw materials in parts by weight: 25-45 parts of nitrile rubber, 25-45 parts of polyvinyl chloride, 10-20 parts of chlorinated polyvinyl chloride, 110-150 parts of filler, 10-20 parts of a foaming agent, 5-15 parts of decabromodiphenyl ethane, 3-7 parts of antimony trioxide, 1-3 parts of butadiene rubber, 8-12 parts of carbon black, 4-8 parts of paraffin, 65-85 parts of chlorinated paraffin oil, 2-3 parts of a lubricant, 1-3 parts of epoxidized soybean oil, 0.3-0.9 part of an anti-aging agent and 2-4 parts of an accelerant. 0.2 to 0.6 part of zinc oxide and 0.4 to 0.8 part of vulcanizing agent. The foaming material provided by the invention takes the nitrile rubber, the polyvinyl chloride and the chlorinated polyvinyl chloride as main materials, is used for the floor sound insulation board, and has high mechanical properties and good anti-aging performance.

Description

Technical Field

[0001] The present invention belongs to the technical field of preparation of foamed materials, and particularly relates to a foamed material for a floor sound insulation board and a preparation method thereof. Background Art

[0002] The foamed materials used for floor sound insulation boards include inorganic materials and organic materials. The inorganic foamed materials include foamed cement boards, which are made of cement, fly ash, etc. as the main raw materials and are made into closed-cell lightweight boards by foaming. They have good fire resistance, but have a relatively large density and relatively weak sound insulation effect. There is also foamed ceramics, which are closed-cell ceramic materials made from raw materials such as ceramic tailings through high-temperature roasting. They have good heat insulation and sound insulation performance and strong durability, but are difficult to prepare and have uneven foaming.

[0003] The organic foamed materials include polyurethane foam, which has a high porosity and good sound absorption performance, can effectively absorb and disperse sound wave energy, and its density can be adjusted, and sound insulation boards with different strengths and flexibilities can be made according to needs, but its aging resistance is poor. Melamine foam is a three-dimensional grid structure material with fully open pores, and the open pore rate is as high as more than 99%. It has outstanding absorption characteristics for medium and high-frequency noises. It is light in weight, resistant to chemical corrosion, and has good environmental protection performance, but its mechanical properties are poor. Modified polypropylene foam, such as the DS floating floor of Wuxi Daoshi, uses food-grade carbon dioxide for physical foaming, is non-toxic and odorless, has excellent moisture-proof performance, and has a remarkable sound insulation effect and can be used for floor sound insulation, but its preparation cost is high. Rubber and plastic foamed materials are based on natural or synthetic rubber, have a closed-cell structure, good heat insulation and sound insulation effects, are flexible, and are convenient for construction, but their mechanical properties and anti-aging properties are relatively poor and need further improvement. Summary of the Invention

[0004] The purpose of the present invention is to provide a foamed material for a floor sound insulation board and a preparation method thereof.

[0005] A foamed material for a floor sound insulation board comprises the following raw materials in parts by weight: 25-45 parts of nitrile rubber, 25-45 parts of polyvinyl chloride, 10-20 parts of chlorinated polyvinyl chloride, 110-150 parts of filler, 10-20 parts of foaming agent, 5-15 parts of decabromodiphenylethane, 3-7 parts of antimony trioxide, 1-3 parts of cis-butadiene rubber, 8-12 parts of carbon black, 4-8 parts of paraffin wax, 65-85 parts of chlorinated paraffin oil, 2-3 parts of lubricant, 1-3 parts of epoxidized soybean oil, 0.3-0.9 part of antioxidant, 2-4 parts of accelerator, 0.2-0.6 part of zinc oxide, and 0.4-0.8 part of vulcanizing agent.

[0006] The filler comprises the following components in parts by weight: 80 parts of aluminum hydroxide, 40 parts of calcium carbonate, and 10 parts of talcum powder.

[0007] The filler is a mixture of sepiolite and stilbite mixed in a mass ratio of 1:1.

[0008] The blowing agent is one or more of azodicarbonamide, benzenesulfonyl hydrazide, p-toluenesulfonyl hydrazide, and sodium bicarbonate.

[0009] The lubricant is one or more of stearic acid, zinc stearate, and 2-(pentaerythritol triisooctanoate) adipate.

[0010] The anti-aging agent is a mixture of nickel bis(3,5-di-tert-butyl-4-hydroxybenzyl phosphoric acid monoethyl ester) and N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine mixed in a mass ratio of 2:1.

[0011] The accelerator includes the following components in parts by weight: 1-3 parts of accelerator PZ, 0.2-0.6 parts of accelerator ZBS, and 0.2-0.6 parts of accelerator DPTT.

[0012] The vulcanizing agent is one or more of tetramethylthiuram disulfide, morpholine disulfide, dicumyl peroxide, benzoyl peroxide, and hexamethylenediamine.

[0013] The preparation method of the foaming material for the floor sound insulation board is carried out according to the following steps:

[0014] (1) According to parts by weight, take 25-45 parts of nitrile rubber, 25-45 parts of polyvinyl chloride, 10-20 parts of chlorinated polyvinyl chloride, 110-150 parts of filler, 10-20 parts of blowing agent, 5-15 parts of decabromodiphenyl ethane, 3-7 parts of antimony trioxide, 1-3 parts of cis-butadiene rubber, 8-12 parts of carbon black, 4-8 parts of paraffin wax, 65-85 parts of chlorinated paraffin oil, 2-3 parts of lubricant, 1-3 parts of epoxidized soybean oil, 0.3-0.9 parts of anti-aging agent, and 0.2-0.6 parts of zinc oxide, add them to a kneader, and knead at 140-180 °C for 10-15 min;

[0015] (2) Add 2-4 parts of accelerator and 0.4-0.8 parts of vulcanizing agent to the material prepared in step (1), send it to an open mill for mixing for 5-10 min, cool it to room temperature, and send it to an extruder for extrusion molding;

[0016] (3) Place the molded material prepared in step (2) in an oven for continuous vulcanization and foaming;

[0017] (4) Cool the molded foaming material prepared in step (3) to room temperature, cut it into finished foaming materials with a length of 1-15 m, and then package and store them in a warehouse.

[0018] The head temperature of the extruder described in step (2) is set at 40 - 60 °C; the oven described in step (3) is divided into 7 vulcanization temperature zones: zone 1 at 105 - 115 °C, with a material passing speed of 1.5 - 2.0 m / min; zone 2 at 115 - 125 °C, with a material passing speed of 2.5 - 3.0 m / min; zone 3 at 125 - 135 °C, with a material passing speed of 3.5 - 4.0 m / min; zone 4 at 135 - 145 °C, with a material passing speed of 4.5 - 5.0 m / min; zone 5 at 155 - 165 °C, with a material passing speed of 5.5 - 6.5 m / min; zone 6 at 165 - 175 °C, with a material passing speed of 7.5 - 8.5 m / min; zone 7 at 170 - 180 °C, with a material passing speed of 8.5 - 9.0 m / min.

[0019] Advantages of the present invention: The foaming material of the present invention uses nitrile rubber, polyvinyl chloride, and chlorinated polyvinyl chloride as the main materials for floor sound insulation boards. The filler uses a combination of sepiolite and stilbite, which improves the mechanical properties of the material. The anti-aging agent uses a combination of bis(3,5-di-tert-butyl-4-hydroxybenzyl phosphoric acid monoethyl ester) nickel and N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine, which improves the anti-aging performance of the material. Detailed implementation manners

[0020] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure content of the present invention more thorough and comprehensive.

[0021] Example 1

[0022] A foaming material for floor sound insulation boards includes the following raw materials in parts by weight: 35 parts of nitrile rubber, 35 parts of polyvinyl chloride, 15 parts of chlorinated polyvinyl chloride, 130 parts of filler, 15 parts of azodicarbonamide, 10 parts of decabromodiphenyl ethane, 5 parts of antimony trioxide, 2 parts of cis-butadiene rubber, 10 parts of carbon black, 6 parts of paraffin wax, 75 parts of chlorinated paraffin oil, 2.5 parts of lubricant, 2 parts of epoxidized soybean oil, 0.6 part of anti-aging agent, 3 parts of accelerator, 0.4 part of zinc oxide, and 0.6 part of tetramethylthiuram disulfide. The filler is a mixture of sepiolite and stilbite mixed in a mass ratio of 1:1; the anti-aging agent is a mixture of bis(3,5-di-tert-butyl-4-hydroxybenzyl phosphoric acid monoethyl ester) nickel and N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine mixed in a mass ratio of 2:1; the accelerator includes the following components in parts by weight: 2 parts of accelerator PZ, 0.5 part of accelerator ZBS, and 0.5 part of accelerator DPTT.

[0023] The preparation method of the foaming material for floor sound insulation boards is carried out according to the following steps:

[0024] (1) By weight parts, take 35 parts of nitrile rubber, 35 parts of polyvinyl chloride, 15 parts of chlorinated polyvinyl chloride, 130 parts of filler, 15 parts of azodicarbonamide, 10 parts of decabromodiphenylethane, 5 parts of antimony trioxide, 2 parts of cis-butadiene rubber, 10 parts of carbon black, 6 parts of paraffin wax, 75 parts of chlorinated paraffin oil, 2.5 parts of lubricant, 2 parts of epoxidized soybean oil, 0.6 part of antioxidant, 0.4 part of zinc oxide, and 0.6 part of tetramethylthiuram disulfide, add them to an internal mixer, and mix for 12 min at 160 °C;

[0025] (2) Add 3 parts of accelerator and 0.6 part of tetramethylthiuram disulfide to the material prepared in step (1), send it to a two-roll mill for mixing for 8 min, cool it to room temperature, and then send it to an extruder for extrusion molding;

[0026] (3) Place the molded material prepared in step (2) in an oven for continuous vulcanization and foaming;

[0027] (4) Cool the molded foamed material prepared in step (3) to room temperature, cut it into finished foamed materials with a length of 5 m, and then package and store them in a warehouse.

[0028] The head temperature of the extruder described in step (2) is set at 50 °C; the oven described in step (3) is divided into 7 vulcanization temperature zones: zone 1 at 110 °C, with a feeding speed of 1.8 m / min; zone 2 at 120 °C, with a feeding speed of 2.8 m / min; zone 3 at 130 °C, with a feeding speed of 3.8 m / min; zone 4 at 140 °C, with a feeding speed of 4.8 m / min; zone 5 at 160 °C, with a feeding speed of 6 m / min; zone 6 at 170 °C, with a feeding speed of 8 m / min; zone 7 at 175 °C, with a feeding speed of 8.8 m / min.

[0029] Example 2

[0030] A foamed material for a floor sound insulation board, comprising the following raw materials by weight parts: 25 parts of nitrile rubber, 25 parts of polyvinyl chloride, 10 parts of chlorinated polyvinyl chloride, 110 parts of filler, 10 parts of benzenesulfonyl hydrazide, 5 parts of decabromodiphenylethane, 3 parts of antimony trioxide, 1 part of cis-butadiene rubber, 8 parts of carbon black, 4 parts of paraffin wax, 65 parts of chlorinated paraffin oil, 2 parts of stearic acid, 1 part of epoxidized soybean oil, 0.4 part of antioxidant, 2 parts of accelerator, 0.2 part of zinc oxide, and 0.4 part of morpholine disulfide; the filler comprises the following components by weight parts: 70 parts of aluminum hydroxide, 30 parts of calcium carbonate, and 10 parts of talc powder; the antioxidant is a mixture of nickel bis(3,5-di-tert-butyl-4-hydroxybenzyl phosphoric acid monoethyl ester) and N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine mixed in a mass ratio of 2:1; the accelerator comprises the following components by weight parts: 1.4 parts of accelerator PZ, 0.3 part of accelerator ZBS, and 0.3 part of accelerator DPTT.

[0031] The preparation method of the foaming material for the floor sound insulation board is carried out according to the following steps:

[0032] (1) By weight, take 25 parts of nitrile rubber, 25 parts of polyvinyl chloride, 10 parts of chlorinated polyvinyl chloride, 110 parts of filler, 10 parts of benzenesulfonyl hydrazide, 5 parts of decabromodiphenylethane, 3 parts of antimony trioxide, 1 part of cis-butadiene rubber, 8 parts of carbon black, 4 parts of paraffin wax, 65 parts of chlorinated paraffin oil, 2 parts of stearic acid, 1 part of epoxidized soybean oil, 0.4 part of antioxidant, 0.2 part of zinc oxide, and 0.4 part of morpholine disulfide, add them to an internal mixer, and knead at 150 °C for 15 min;

[0033] (2) Add 2 parts of accelerator and 0.4 part of morpholine disulfide to the material prepared in step (1), send it to an open mill for mixing for 10 min, cool it to room temperature, and then send it to an extruder for extrusion molding; the head temperature of the extruder is set at 40 °C;

[0034] (3) Place the formed material prepared in step (2) in an oven for continuous vulcanization and foaming; the oven is divided into 7 vulcanization temperature zones: zone 1 at 105 °C, with a feeding speed of 1.5 m / min; zone 2 at 115 °C, with a feeding speed of 2.5 m / min; zone 3 at 125 °C, with a feeding speed of 3.5 m / min; zone 4 at 135 °C, with a feeding speed of 4.5 m / min; zone 5 at 155 °C, with a feeding speed of 5.5 m / min; zone 6 at 165 °C, with a feeding speed of 7.5 m / min; zone 7 at 170 °C, with a feeding speed of 8.5 m / min;

[0035] (4) Cool the formed foaming material prepared in step (3) to room temperature, cut it into finished foaming materials with a length of 3 m, and then package and store them in the warehouse.

[0036] Example 3

[0037] A foaming material for a floor sound insulation board, comprising the following raw materials by weight: 45 parts of nitrile rubber, 45 parts of polyvinyl chloride, 20 parts of chlorinated polyvinyl chloride, 150 parts of filler, 20 parts of sodium bicarbonate, 15 parts of decabromodiphenylethane, 7 parts of antimony trioxide, 3 parts of cis-butadiene rubber, 12 parts of carbon black, 8 parts of paraffin wax, 85 parts of chlorinated paraffin oil, 3 parts of 2-(pentaerythritol triisooctanoate) adipate, 3 parts of epoxidized soybean oil, 0.8 part of antioxidant, 4 parts of accelerator, 0.6 part of zinc oxide, and 0.8 part of dicumyl peroxide; the filler is a mixture of sepiolite and stilbite mixed in a mass ratio of 1:1; the antioxidant is a mixture of bis(3,5-di-tert-butyl-4-hydroxybenzyl phosphoric acid monoethyl ester) nickel and N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine mixed in a mass ratio of 2:1; the accelerator comprises the following components by weight: 3 parts of accelerator PZ, 0.5 part of accelerator ZBS, and 0.5 part of accelerator DPTT.

[0038] The preparation method of the foaming material for the floor sound insulation board is carried out according to the following steps:

[0039] (1) By weight, take 45 parts of nitrile rubber, 45 parts of polyvinyl chloride, 20 parts of chlorinated polyvinyl chloride, 150 parts of filler, 20 parts of sodium bicarbonate, 15 parts of decabromodiphenylethane, 7 parts of antimony trioxide, 3 parts of cis-butadiene rubber, 12 parts of carbon black, 8 parts of paraffin wax, 85 parts of chlorinated paraffin oil, 3 parts of 2-(pentaerythritol triisooctanoate) adipate, 3 parts of epoxidized soybean oil, 0.8 part of antioxidant, and 0.6 part of zinc oxide, add them to an internal mixer, and knead them at 180 °C for 10 min;

[0040] (2) Add 4 parts of accelerator and 0.8 part of dicumyl peroxide to the material prepared in step (1), send it to an open mill for mixing for 6 min, cool it to room temperature, and then send it to an extruder for extrusion molding; the head temperature of the extruder is set at 60 °C;

[0041] (3) Place the molded material prepared in step (2) in an oven for continuous vulcanization and foaming; the oven is divided into 7 vulcanization temperature zones: zone 1 at 115 °C, with a feeding speed of 2.0 m / min; zone 2 at 125 °C, with a feeding speed of 3.0 m / min; zone 3 at 135 °C, with a feeding speed of 4.0 m / min; zone 4 at 145 °C, with a feeding speed of 5.0 m / min; zone 5 at 165 °C, with a feeding speed of 6.5 m / min; zone 6 at 175 °C, with a feeding speed of 8.5 m / min; zone 7 at 180 °C, with a feeding speed of 9.0 m / min;

[0042] (4) Cool the molded foaming material prepared in step (3) to room temperature, cut it into finished foaming material with a length of 12 m, and then package it and store it in the warehouse.

[0043] Comparative Example 1

[0044] A foaming material for a floor sound insulation board, comprising the following raw materials by weight: 35 parts of nitrile rubber, 35 parts of polyvinyl chloride, 15 parts of chlorinated polyvinyl chloride, 130 parts of sepiolite, 15 parts of azodicarbonamide, 10 parts of decabromodiphenylethane, 5 parts of antimony trioxide, 2 parts of cis-butadiene rubber, 10 parts of carbon black, 6 parts of paraffin wax, 75 parts of chlorinated paraffin oil, 2.5 parts of lubricant, 2 parts of epoxidized soybean oil, 0.6 part of antioxidant, 3 parts of accelerator, 0.4 part of zinc oxide, and 0.6 part of tetramethylthiuram disulfide. The antioxidant is a mixture of nickel bis(3,5-di-tert-butyl-4-hydroxybenzyl phosphoric acid monoethyl ester) and N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine mixed in a mass ratio of 2:1; the accelerator comprises the following components by weight: 2 parts of accelerator PZ, 0.5 part of accelerator ZBS, and 0.5 part of accelerator DPTT.

[0045] The preparation method of the foaming material for the floor sound insulation board is carried out according to the following steps:

[0046] (1) By weight parts, take 35 parts of nitrile rubber, 35 parts of polyvinyl chloride, 15 parts of chlorinated polyvinyl chloride, 130 parts of sepiolite, 15 parts of azodicarbonamide, 10 parts of decabromodiphenylethane, 5 parts of antimony trioxide, 2 parts of cis-butadiene rubber, 10 parts of carbon black, 6 parts of paraffin wax, 75 parts of chlorinated paraffin oil, 2.5 parts of lubricant, 2 parts of epoxidized soybean oil, 0.6 part of antioxidant, 0.4 part of zinc oxide, and 0.6 part of tetramethylthiuram disulfide, add them into a kneader, and knead at 160 °C for 12 min;

[0047] (2) Add 3 parts of accelerator and 0.6 part of tetramethylthiuram disulfide to the material prepared in step (1), send it to an open mill for open milling for 8 min, cool it to room temperature, and then send it to an extruder for extrusion molding;

[0048] (3) Place the molded material prepared in step (2) in an oven for continuous vulcanization and foaming;

[0049] (4) Cool the molded foamed material prepared in step (3) to room temperature, cut it into finished foamed material with a length of 5 m, and then package and store it in a warehouse.

[0050] The head temperature of the extruder described in step (2) is set at 50 °C; the oven described in step (3) is divided into 7 vulcanization temperature zones: zone 1 at 110 °C, with a feeding speed of 1.8 m / min; zone 2 at 120 °C, with a feeding speed of 2.8 m / min; zone 3 at 130 °C, with a feeding speed of 3.8 m / min; zone 4 at 140 °C, with a feeding speed of 4.8 m / min; zone 5 at 160 °C, with a feeding speed of 6 m / min; zone 6 at 170 °C, with a feeding speed of 8 m / min; zone 7 at 175 °C, with a feeding speed of 8.8 m / min.

[0051] Comparative Example 2

[0052] A foamed material for a floor sound insulation board, comprising raw materials in the following weight parts: 35 parts of nitrile rubber, 35 parts of polyvinyl chloride, 15 parts of chlorinated polyvinyl chloride, 130 parts of stilbite, 15 parts of azodicarbonamide, 10 parts of decabromodiphenylethane, 5 parts of antimony trioxide, 2 parts of cis-butadiene rubber, 10 parts of carbon black, 6 parts of paraffin wax, 75 parts of chlorinated paraffin oil, 2.5 parts of lubricant, 2 parts of epoxidized soybean oil, 0.6 part of antioxidant, 3 parts of accelerator, 0.4 part of zinc oxide, and 0.6 part of tetramethylthiuram disulfide. The antioxidant is a mixture of nickel bis(3,5-di-tert-butyl-4-hydroxybenzyl phosphoric acid monoethyl ester) and N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine mixed in a mass ratio of 2:1; the accelerator comprises the following components in weight parts: 2 parts of accelerator PZ, 0.5 part of accelerator ZBS, and 0.5 part of accelerator DPTT.

[0053] The preparation method of the foaming material for the floor sound insulation board is carried out according to the following steps:

[0054] (1) By weight, take 35 parts of nitrile rubber, 35 parts of polyvinyl chloride, 15 parts of chlorinated polyvinyl chloride, 130 parts of clinoptilolite, 15 parts of azodicarbonamide, 10 parts of decabromodiphenylethane, 5 parts of antimony trioxide, 2 parts of cis-butadiene rubber, 10 parts of carbon black, 6 parts of paraffin wax, 75 parts of chlorinated paraffin oil, 2.5 parts of lubricant, 2 parts of epoxidized soybean oil, 0.6 part of antioxidant, 0.4 part of zinc oxide, and 0.6 part of tetramethylthiuram disulfide, add them to an internal mixer, and mix them at 160 °C for 12 min;

[0055] (2) Add 3 parts of accelerator and 0.6 part of tetramethylthiuram disulfide to the material prepared in step (1), send it to an open mill for mixing for 8 min, cool it to room temperature, and then send it to an extruder for extrusion molding;

[0056] (3) Place the molded material prepared in step (2) in an oven for continuous vulcanization and foaming;

[0057] (4) Cool the molded foaming material prepared in step (3) to room temperature, cut it into finished foaming materials with a length of 5 m, and then package and store them in the warehouse.

[0058] The head temperature of the extruder in step (2) is set at 50 °C; the oven in step (3) is divided into 7 vulcanization temperature zones: zone 1 at 110 °C, with a feeding speed of 1.8 m / min; zone 2 at 120 °C, with a feeding speed of 2.8 m / min; zone 3 at 130 °C, with a feeding speed of 3.8 m / min; zone 4 at 140 °C, with a feeding speed of 4.8 m / min; zone 5 at 160 °C, with a feeding speed of 6 m / min; zone 6 at 170 °C, with a feeding speed of 8 m / min; zone 7 at 175 °C, with a feeding speed of 8.8 m / min.

[0059] Comparative Example 3

[0060] A foaming material for a floor sound insulation board, comprising raw materials in the following parts by weight: 35 parts of nitrile rubber, 35 parts of polyvinyl chloride, 15 parts of chlorinated polyvinyl chloride, 130 parts of filler, 15 parts of azodicarbonamide, 10 parts of decabromodiphenylethane, 5 parts of antimony trioxide, 2 parts of cis-butadiene rubber, 10 parts of carbon black, 6 parts of paraffin wax, 75 parts of chlorinated paraffin oil, 2.5 parts of lubricant, 2 parts of epoxy soybean oil, 0.6 part of antioxidant, 3 parts of accelerator, 0.4 part of zinc oxide, and 0.6 part of tetramethylthiuram disulfide. The filler is a mixture of sepiolite and clinoptilolite mixed in a mass ratio of 1:1; the antioxidant is a mixture of nickel bis(3,5-di-tert-butyl-4-hydroxybenzyl phosphoric acid monoethyl ester) and N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine mixed in a mass ratio of 2:1; the accelerator comprises the following components in parts by weight: 2 parts of accelerator PZ, 0.5 part of accelerator ZBS, and 0.5 part of accelerator DPTT.

[0061] The preparation method of the foaming material for the floor sound insulation board is carried out according to the following steps:

[0062] (1) According to the parts by weight, take 35 parts of nitrile rubber, 35 parts of polyvinyl chloride, 15 parts of chlorinated polyvinyl chloride, 130 parts of filler, 15 parts of azodicarbonamide, 10 parts of decabromodiphenylethane, 5 parts of antimony trioxide, 2 parts of cis-butadiene rubber, 10 parts of carbon black, 6 parts of paraffin wax, 75 parts of chlorinated paraffin oil, 2.5 parts of lubricant, 2 parts of epoxy soybean oil, 0.6 part of antioxidant, 0.4 part of zinc oxide, and 0.6 part of tetramethylthiuram disulfide, add them to a kneader, and knead at 160 °C for 12 min;

[0063] (2) Add 3 parts of accelerator and 0.6 part of tetramethylthiuram disulfide to the material prepared in step (1), send it to an open mill for mixing for 8 min, cool it to room temperature, and then send it to an extruder for extrusion molding;

[0064] (3) Place the molded material prepared in step (2) in an oven for continuous vulcanization and foaming;

[0065] (4) Cool the molded foaming material prepared in step (3) to room temperature, cut it into finished foaming materials with a length of 5 m, and then package and store them in a warehouse.

[0066] The head temperature of the extruder in step (2) is set at 50 °C; the oven in step (3) is divided into 7 vulcanization temperature zones: zone 1 at 110 °C, with a feeding speed of 1.8 m / min; zone 2 at 120 °C, with a feeding speed of 2.8 m / min; zone 3 at 130 °C, with a feeding speed of 3.8 m / min; zone 4 at 140 °C, with a feeding speed of 4.8 m / min; zone 5 at 160 °C, with a feeding speed of 6 m / min; zone 6 at 170 °C, with a feeding speed of 8 m / min; zone 7 at 175 °C, with a feeding speed of 8.8 m / min.

[0067] Comparative Example 4

[0068] A foaming material for floor sound insulation board, comprising raw materials in the following parts by weight: 35 parts of nitrile rubber, 35 parts of polyvinyl chloride, 15 parts of chlorinated polyvinyl chloride, 130 parts of filler, 15 parts of azodicarbonamide, 10 parts of decabromodiphenylethane, 5 parts of antimony trioxide, 2 parts of cis-butadiene rubber, 10 parts of carbon black, 6 parts of paraffin wax, 75 parts of chlorinated paraffin oil, 2.5 parts of lubricant, 2 parts of epoxidized soybean oil, 0.6 part of nickel bis(3,5-di-tert-butyl-4-hydroxybenzyl phosphoric acid monoethyl ester), 3 parts of accelerator, 0.4 part of zinc oxide, 0.6 part of tetramethylthiuram disulfide. The filler is a mixture of sepiolite and stilbite mixed in a mass ratio of 1:1; the accelerator comprises the following components in parts by weight: 2 parts of accelerator PZ, 0.5 part of accelerator ZBS, 0.5 part of accelerator DPTT.

[0069] The preparation method of the foaming material for floor sound insulation board is carried out according to the following steps:

[0070] (1) According to the parts by weight, take 35 parts of nitrile rubber, 35 parts of polyvinyl chloride, 15 parts of chlorinated polyvinyl chloride, 130 parts of filler, 15 parts of azodicarbonamide, 10 parts of decabromodiphenylethane, 5 parts of antimony trioxide, 2 parts of cis-butadiene rubber, 10 parts of carbon black, 6 parts of paraffin wax, 75 parts of chlorinated paraffin oil, 2.5 parts of lubricant, 2 parts of epoxidized soybean oil, 0.6 part of nickel bis(3,5-di-tert-butyl-4-hydroxybenzyl phosphoric acid monoethyl ester), 0.4 part of zinc oxide, 0.6 part of tetramethylthiuram disulfide, add them to a kneader, and knead at 160 °C for 12 min;

[0071] (2) Add 3 parts of accelerator and 0.6 part of tetramethylthiuram disulfide to the material prepared in step (1), send it to an open mill for mixing for 8 min, cool it to room temperature, and then send it to an extruder for extrusion molding;

[0072] (3) Place the molded material prepared in step (2) in an oven for continuous vulcanization and foaming;

[0073] (4) Cool the molded foamed material prepared in step (3) to room temperature, cut it into finished foamed materials with a length of 5 m, and then package and store them in a warehouse.

[0074] The head temperature of the extruder in step (2) is set at 50 °C; the oven in step (3) is divided into 7 vulcanization temperature zones: zone 1 at 110 °C, with a feeding speed of 1.8 m / min; zone 2 at 120 °C, with a feeding speed of 2.8 m / min; zone 3 at 130 °C, with a feeding speed of 3.8 m / min; zone 4 at 140 °C, with a feeding speed of 4.8 m / min; zone 5 at 160 °C, with a feeding speed of 6 m / min; zone 6 at 170 °C, with a feeding speed of 8 m / min; zone 7 at 175 °C, with a feeding speed of 8.8 m / min.

[0075] Comparative Example 5

[0076] A foaming material for floor sound insulation board, comprising raw materials in the following parts by weight: 35 parts of nitrile rubber, 35 parts of polyvinyl chloride, 15 parts of chlorinated polyvinyl chloride, 130 parts of filler, 15 parts of azodicarbonamide, 10 parts of decabromodiphenylethane, 5 parts of antimony trioxide, 2 parts of cis-butadiene rubber, 10 parts of carbon black, 6 parts of paraffin wax, 75 parts of chlorinated paraffin oil, 2.5 parts of lubricant, 2 parts of epoxidized soybean oil, 0.6 part of N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine, 3 parts of accelerator, 0.4 part of zinc oxide, 0.6 part of tetramethylthiuram disulfide. The filler is a mixture of sepiolite and stilbite mixed according to a mass ratio of 1:1; the accelerator comprises the following components in parts by weight: 2 parts of accelerator PZ, 0.5 part of accelerator ZBS, 0.5 part of accelerator DPTT.

[0077] The preparation method of the foaming material for floor sound insulation board is carried out according to the following steps:

[0078] (1) According to the parts by weight, take 35 parts of nitrile rubber, 35 parts of polyvinyl chloride, 15 parts of chlorinated polyvinyl chloride, 130 parts of filler, 15 parts of azodicarbonamide, 10 parts of decabromodiphenylethane, 5 parts of antimony trioxide, 2 parts of cis-butadiene rubber, 10 parts of carbon black, 6 parts of paraffin wax, 75 parts of chlorinated paraffin oil, 2.5 parts of lubricant, 2 parts of epoxidized soybean oil, 0.6 part of N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine, 0.4 part of zinc oxide, 0.6 part of tetramethylthiuram disulfide, add them to a kneader, and knead at 160°C for 12 min;

[0079] (2) Add 3 parts of accelerator and 0.6 part of tetramethylthiuram disulfide to the material prepared in step (1), send it to an open mill for open milling for 8 min, cool it to room temperature, and send it to an extruder for extrusion molding;

[0080] (3) Place the molded material prepared in step (2) in an oven for continuous vulcanization and foaming;

[0081] (4) Cool the molded foaming material prepared in step (3) to room temperature, cut it into finished foaming materials with a length of 5 m, and then package and store them in a warehouse.

[0082] The head temperature of the extruder described in step (2) is set at 50 °C; the oven described in step (3) is divided into 7 vulcanization temperature zones: zone 1 at 110 °C with a feeding speed of 1.8 m / min; zone 2 at 120 °C with a feeding speed of 2.8 m / min; zone 3 at 130 °C with a feeding speed of 3.8 m / min; zone 4 at 140 °C with a feeding speed of 4.8 m / min; zone 5 at 160 °C with a feeding speed of 6 m / min; zone 6 at 170 °C with a feeding speed of 8 m / min; zone 7 at 175 °C with a feeding speed of 8.8 m / min.

[0083] Experimental example:

[0084] The tensile strength of the foamed materials prepared in Examples 1-3 and Comparative Examples 1-3 was measured according to the method specified in DIN 53543, and the elongation at break was measured according to the method specified in DIN 53507-B. The experimental results were statistically analyzed using SPSS 24.0 software. The results of measurement data were expressed as ± (mean ± standard deviation). The Kolmogorov-Smirnov test method was used for data normality test. For data conforming to normal distribution, the t-test was used to compare the mean differences between two groups. A P value < 0.05 was considered statistically significant. The measurement results are shown in Table 1:

[0085] Table 1

[0086]

[0087] Note: * represents P < 0.05 compared with the Example 1 group.

[0088] According to the method of DIN53424, the foamed materials prepared in Examples 1-3 and Comparative Examples 4-5 were made into specimens of 40 mm × 40 mm × 20 mm. In a Martin heat resistance box, the temperature was increased at a constant rate of 50 °C / h. The compression load mode was selected for loading, and the pressure was 0.025 MPa. The temperature when the specimen thickness decreased by 2 mm was recorded, which was the heat distortion temperature. The experimental results were statistically analyzed using SPSS 24.0 software. The results of measurement data were expressed as ± (mean ± standard deviation). The Kolmogorov-Smirnov test method was used for data normality test. For data conforming to normal distribution, the t-test was used to compare the mean differences between two groups. A P value < 0.05 was considered statistically significant. The measurement results are shown in Table 2:

[0089] Table 2

[0090]

[0091] Note: * represents P < 0.05 compared with the Example 1 group.

[0092] The above-described embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A foaming material for a floor sound insulation board, characterized in that, It includes raw materials in the following parts by weight: 25-45 parts of nitrile rubber, 25-45 parts of polyvinyl chloride, 10-20 parts of chlorinated polyvinyl chloride, 110-150 parts of filler, 10-20 parts of foaming agent, 5-15 parts of decabromodiphenylethane, 3-7 parts of antimony trioxide, 1-3 parts of cis-butadiene rubber, 8-12 parts of carbon black, 4-8 parts of paraffin wax, 65-85 parts of chlorinated paraffin oil, 2-3 parts of lubricant, 1-3 parts of epoxidized soybean oil, 0.3-0.9 parts of antioxidant, 2-4 parts of accelerator, 0.2-0.6 parts of zinc oxide, and 0.4-0.8 parts of vulcanizing agent.

2. The foaming material for the floor sound insulation board according to claim 1, characterized in that, The filler includes components in the following parts by weight: 80 parts of aluminum hydroxide, 40 parts of calcium carbonate, and 10 parts of talcum powder.

3. The foaming material for the floor sound insulation board according to claim 1, wherein The filler is a mixture of sepiolite and stilbite mixed in a mass ratio of 1:

1.

4. The foaming material for the floor sound insulation board according to claim 1, wherein The foaming agent is one or more of azodicarbonamide, benzenesulfonyl hydrazide, p-toluenesulfonyl hydrazide, and sodium bicarbonate.

5. The foaming material for the floor sound insulation board according to claim 1, characterized in that, The lubricant is one or more of stearic acid, zinc stearate, and 2-(pentaerythritol triisooctanoate) adipate.

6. The foaming material for the floor sound insulation board according to claim 1, wherein, The antioxidant is a mixture of nickel bis(3,5-di-tert-butyl-4-hydroxybenzyl phosphoric acid monoethyl ester) and N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine mixed in a mass ratio of 2:

1.

7. The foaming material for the floor sound insulation board according to claim 1, characterized in that, The accelerator includes components in the following parts by weight: 1-3 parts of accelerator PZ, 0.2-0.6 parts of accelerator ZBS, and 0.2-0.6 parts of accelerator DPTT.

8. The foaming material for the floor sound insulation board according to claim 1, wherein The vulcanizing agent is one or more of tetramethylthiuram disulfide, morpholine disulfide, dicumyl peroxide, benzoyl peroxide, and hexamethylenediamine.

9. The preparation method of the foaming material for the floor sound insulation board according to claim 1, characterized in that, It is carried out according to the following steps: (1) According to the parts by weight, take 25-45 parts of nitrile rubber, 25-45 parts of polyvinyl chloride, 10-20 parts of chlorinated polyvinyl chloride, 110-150 parts of filler, 10-20 parts of foaming agent, 5-15 parts of decabromodiphenylethane, 3-7 parts of antimony trioxide, 1-3 parts of cis-butadiene rubber, 8-12 parts of carbon black, 4-8 parts of paraffin wax, 65-85 parts of chlorinated paraffin oil, 2-3 parts of lubricant, 1-3 parts of epoxidized soybean oil, 0.3-0.9 parts of antioxidant, and 0.2-0.6 parts of zinc oxide, add them to an internal mixer, and carry out internal mixing at 140-180 °C for 10-15 min; (2) Add 2-4 parts of accelerator and 0.4-0.8 parts of vulcanizing agent to the material prepared in step (1), send it to an open mill for open milling for 5-10 min, cool it to room temperature, and send it to an extruder for extrusion molding; (3) Place the molded material prepared in step (2) in an oven for continuous vulcanization and foaming; (4) Cool the molded foamed material prepared in step (3) to room temperature, cut it into finished foamed materials with a length of 1-15 m, and then package and store them in a warehouse.

10. The preparation method of the foaming material for the floor sound insulation board according to claim 9, characterized in that, The head temperature of the extruder described in step (2) is set at 40 - 60°C; the oven described in step (3) is divided into 7 vulcanization temperature zones: Zone 1 at 105 - 115°C, with a material passing speed of 1.5 - 2.0 m / min; Zone 2 at 115 - 125°C, with a material passing speed of 2.5 - 3.0 m / min; Zone 3 at 125 - 135°C, with a material passing speed of 3.5 - 4.0 m / min; Zone 4 at 135 - 145°C, with a material passing speed of 4.5 - 5.0 m / min; Zone 5 at 155 - 165°C, with a material passing speed of 5.5 - 6.5 m / min; Zone 6 at 165 - 175°C, with a material passing speed of 7.5 - 8.5 m / min; Zone 7 at 170 - 180°C, with a material passing speed of 8.5 - 9.0 m / min.

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