Dynamically-vulcanized flame-retardant TPV composite material and preparation method thereof

Abstract

The invention relates to the technical field of materials, and in particular, relates to a dynamically-vulcanized flame-retardant TPV composite material and a preparation method thereof. The dynamically-vulcanized flame-retardant TPV composite material is composed of, in parts by weight, 80-120 parts of thermoplastic vulcanized rubber, 40-60 parts of ethylene propylene diene monomer, 30-50 parts of POE plastic, 5-15 parts of polypropylene, a proper amount of a vulcanizing agent bis-25, 5-20 parts of an interfacial compatibilizer and 40-50 parts of a flame retardant. By adding the interfacial compatibilizer SEBS-g-MAH with a high grafting rate, the interfacial adhesive force between the flame retardant and matrix resin is improved; meanwhile, the high flame retardant property and high mechanical property of the flame-retardant TPV material are considered; and the compatibility of the flame retardant and the TPV material can be improved by the interfacial compatibilizer, and the flame retardant property of the material is not influenced by the addition of the compatibilizer.

Description

technical field

[0001] The present invention relates to the technical field of materials, in particular to a dynamic vulcanized flame-retardant TPV composite material and a preparation method thereof. Background technique

[0002] At present, the TPV materials on the market are mainly thermoplastic dynamic breaking ethylene propylene diene rubber (EPDM) / polypropylene (PP), which is extremely flammable and used in construction engineering, wire and cable and other fields, and there is a very large fire hazard. Therefore, it is very important to improve the flame retardant modification of TPV materials, and in order to better understand the influence of flame retardant dosage on the flame retardant properties and mechanical properties of materials, and to investigate the influence of interfacial compatibilizers on the properties of halogen-free flame retardant TPV materials , so a dynamic vulcanization flame retardant TPV composite material and its preparation method are propo...

Examples

preparation example Construction

[0020] A kind of dynamic vulcanization flame-retardant TPV composite material, its preparation method comprises the following steps:

[0021] S1, mix thermoplastic vulcanizate, EPDM rubber, POE plastic, polypropylene, interface compatibilizer and flame retardant in a high-speed mixer according to a certain formula ratio, and then add it to a twin-screw extruder for melt extrusion , to obtain an intermediate;

[0022] S2, then use twin-screw extruder to carry out dynamic vulcanization after the intermediate and vulcanizing agent double-25 are mixed in a certain proportion, and prepare dynamic vulcanized flame-retardant TPV pellets after water cooling, drawing, and pelletizing;

[0023] S3, after the pellets are vacuum-dried at 100°C, they are injected into samples with a vertical injection molding machine, and then made into samples with a standard cutter for performance testing.

[0024] S1 90 parts of thermoplastic vulcanizate, 50 parts of EPDM rubber, 40 parts of POE plasti...

Embodiment 1

[0027] Example 1: Mix the formula ratio of 90 parts of thermoplastic vulcanizate, 50 parts of EPDM rubber, 40 parts of POE plastic, 10 parts of polypropylene, 50 parts of interface compatibilizer and 10 parts of flame retardant in a high-speed mixer , and then added to a twin-screw extruder to melt and extrude, the extrusion temperature is 190-200 ° C, and the intermediate is obtained; then the intermediate and the vulcanizing agent Shuang-25 are mixed at a ratio of 5:2, and then the twin-screw The extruder performs dynamic vulcanization, the extrusion temperature is 180-190°C, and the dynamic vulcanization and flame-retardant TPV pellets are prepared after water cooling, drawing, and pelletizing; after the pellets are vacuum-dried at 100°C, they are processed by a vertical injection molding machine Injection molded into samples, and then made samples with standard cutting knife for performance testing.

Embodiment 2

[0028] Example 2: Mix the formula ratio of 90 parts of thermoplastic vulcanizate, 50 parts of EPDM rubber, 40 parts of POE plastic, 10 parts of polypropylene, 50 parts of interfacial compatibilizer and 15 parts of flame retardant in a high-speed mixer , and then added to a twin-screw extruder to melt and extrude, the extrusion temperature is 190-200 ° C, and the intermediate is obtained; then the intermediate and the vulcanizing agent Shuang-25 are mixed at a ratio of 5:2, and then the twin-screw The extruder performs dynamic vulcanization, the extrusion temperature is 180-190°C, and the dynamic vulcanization and flame-retardant TPV pellets are prepared after water cooling, drawing, and pelletizing; after the pellets are vacuum-dried at 100°C, they are processed by a vertical injection molding machine Injection molded into samples, and then made samples with standard cutting knife for performance testing.

technical field

[0001] The present invention relates to the technical field of materials, in particular to a dynamic vulcanized flame-retardant TPV composite material and a preparation method thereof. Background technique

[0002] At present, the TPV materials on the market are mainly thermoplastic dynamic breaking ethylene propylene diene rubber (EPDM) / polypropylene (PP), which is extremely flammable and used in construction engineering, wire and cable and other fields, and there is a very large fire hazard. Therefore, it is very important to improve the flame retardant modification of TPV materials, and in order to better understand the influence of flame retardant dosage on the flame retardant properties and mechanical properties of materials, and to investigate the influence of interfacial compatibilizers on the properties of halogen-free flame retardant TPV materials , so a dynamic vulcanization flame retardant TPV composite material and its preparation method are propo...

Examples

preparation example Construction

[0020] A kind of dynamic vulcanization flame-retardant TPV composite material, its preparation method comprises the following steps:

[0021] S1, mix thermoplastic vulcanizate, EPDM rubber, POE plastic, polypropylene, interface compatibilizer and flame retardant in a high-speed mixer according to a certain formula ratio, and then add it to a twin-screw extruder for melt extrusion , to obtain an intermediate;

[0022] S2, then use twin-screw extruder to carry out dynamic vulcanization after the intermediate and vulcanizing agent double-25 are mixed in a certain proportion, and prepare dynamic vulcanized flame-retardant TPV pellets after water cooling, drawing, and pelletizing;

[0023] S3, after the pellets are vacuum-dried at 100°C, they are injected into samples with a vertical injection molding machine, and then made into samples with a standard cutter for performance testing.

[0024] S1 90 parts of thermoplastic vulcanizate, 50 parts of EPDM rubber, 40 parts of POE plasti...

Embodiment 1

[0027] Example 1: Mix the formula ratio of 90 parts of thermoplastic vulcanizate, 50 parts of EPDM rubber, 40 parts of POE plastic, 10 parts of polypropylene, 50 parts of interface compatibilizer and 10 parts of flame retardant in a high-speed mixer , and then added to a twin-screw extruder to melt and extrude, the extrusion temperature is 190-200 ° C, and the intermediate is obtained; then the intermediate and the vulcanizing agent Shuang-25 are mixed at a ratio of 5:2, and then the twin-screw The extruder performs dynamic vulcanization, the extrusion temperature is 180-190°C, and the dynamic vulcanization and flame-retardant TPV pellets are prepared after water cooling, drawing, and pelletizing; after the pellets are vacuum-dried at 100°C, they are processed by a vertical injection molding machine Injection molded into samples, and then made samples with standard cutting knife for performance testing.

Embodiment 2

[0028] Example 2: Mix the formula ratio of 90 parts of thermoplastic vulcanizate, 50 parts of EPDM rubber, 40 parts of POE plastic, 10 parts of polypropylene, 50 parts of interfacial compatibilizer and 15 parts of flame retardant in a high-speed mixer , and then added to a twin-screw extruder to melt and extrude, the extrusion temperature is 190-200 ° C, and the intermediate is obtained; then the intermediate and the vulcanizing agent Shuang-25 are mixed at a ratio of 5:2, and then the twin-screw The extruder performs dynamic vulcanization, the extrusion temperature is 180-190°C, and the dynamic vulcanization and flame-retardant TPV pellets are prepared after water cooling, drawing, and pelletizing; after the pellets are vacuum-dried at 100°C, they are processed by a vertical injection molding machine Injection molded into samples, and then made samples with standard cutting knife for performance testing.

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