A class a flame retardant and fire resistant 1000 degree silicone rubber composite material, its preparation method and application

Abstract

This invention discloses a Class A flame-retardant and 1000°C fire-resistant silicone rubber composite material, comprising the following components in parts by weight: 20-150 parts composite nano-silica, 10-60 parts silica, 40-150 parts methyl vinyl silicone rubber, 10-60 parts vinyl silicone oil, 5-40 parts plasticizer, 1-10 parts coupling agent, 3-40 parts hydrogen-containing silicone oil, and 0.1-5 parts platinum catalyst. The above materials are placed in a vacuum kneader and kneaded evenly to obtain a solid, soft Class A flame-retardant and 1000°C fire-resistant silicone rubber composite material. After extrusion molding and drying, it exhibits Class A flame retardancy and 1000°C fire resistance, while also possessing good flexibility, good bending performance, and excellent electrical insulation and physical properties. This material does not ignite when exposed to an open flame; under high-temperature baking, it forms a ceramic-like structure to protect wires and cables from short circuits; at room temperature, it possesses all the excellent properties of silicone rubber materials. This invention is easy to process and produce, and the material exhibits good flame retardancy and fire resistance.

Description

Technical Field

[0001] This invention relates to a Class A flame-retardant and fire-resistant silicone rubber composite material with a temperature resistance of 1000 degrees Celsius, its preparation method and application, belonging to the field of polymer composite material technology. Background Technology

[0002] Using methyl vinyl silicone rubber as the matrix, composite nano-silica and fumed silica, along with vinyl silicone oil, plasticizer, coupling agent, hydrogen-containing silicone oil, and platinum catalyst, are mixed evenly in a vacuum kneader to obtain a Class A flame-retardant and 1000°C fire-resistant silicone rubber composite material. This material does not ignite when exposed to an open flame; under high-temperature flame baking, it forms a ceramic-like structure; at room temperature, it possesses all the excellent properties of silicone rubber. When exposed to fire, the Class A flame-retardant and 1000°C fire-resistant silicone rubber composite material is burned into a hard, ceramic-like layer, effectively isolating the material's interior from the external environment. Flame-retardant and fire-resistant wires and cables made using this Class A flame-retardant and 1000°C fire-resistant silicone rubber composite material possess the high-temperature resistance, aging resistance, good bending properties, and insulation properties of ordinary silicone rubber wires and cables at room temperature. When a fire occurs, the sheath made of Class A flame-retardant and 1000-degree-fire-resistant silicone rubber composite material will not burn. The fire-resistant layer made of Class A flame-retardant and 1000-degree-fire-resistant silicone rubber composite material is sintered into a hard ceramic shell protective layer, protecting the wires and cables from short circuits, buying precious time for rescue and disaster relief, and ensuring the safety of people's lives and property.

[0003] When existing ceramicized silicone rubber is used for fire-resistant layers and sheaths of wires and cables, the production process is complex and costly. The wires and cables are also stiff and difficult to bend, and cracking occurs when they are bent, making wiring and installation work difficult. Summary of the Invention

[0004] To address the existing technical problems, this invention provides a Class A flame-retardant and 1000°C fire-resistant silicone rubber composite material, its preparation method, and its application. This material is a solid, soft substance, easy to process and extrude. After extrusion molding and drying, it exhibits Class A flame retardancy and 1000°C fire resistance, while also possessing good flexibility, good bending performance, and excellent electrical insulation and physical properties.

[0005] This invention is achieved through the following techniques: A Class A flame-retardant and fire-resistant silicone rubber composite material with a temperature resistance of 1000 degrees Celsius, comprising the following components in parts by weight: 20-150 parts of composite nano-silica, 10-60 parts of silica, 40-150 parts of methyl vinyl silicone rubber, 10-60 parts of vinyl silicone oil, 5-40 parts of plasticizer, 1-10 parts of coupling agent, 3-40 parts of hydrogen-containing silicone oil, and 0.1-5 parts of platinum catalyst.

[0006] The preparation method of the Class A flame-retardant and 1000-degree fire-resistant silicone rubber composite material includes the following steps: Weigh the following ingredients according to the formula: methyl vinyl silicone rubber, composite nano silica, silica, vinyl silicone oil, plasticizer, coupling agent, hydrogen-containing silicone oil, and platinum catalyst. The weighed methyl vinyl silicone rubber and composite nano silica are put into a vacuum kneader, and at the same time, fumed silica, vinyl silicone oil, plasticizer, coupling agent, hydrogen-containing silicone oil and platinum catalyst are added. Control the kneading temperature of the vacuum kneader between 0-80℃, stir evenly, and form a solid-soft mixture; After forming a solid-soft mixture, the vacuum kneader is evacuated, and the mixture is kneaded for another 0.5 to 6 hours before being discharged.

[0007] The beneficial effects of this invention are as follows: The Class A flame-retardant and 1000-degree-fire-resistant silicone rubber composite material, its preparation method, and its application are described in this invention. This Class A flame-retardant and 1000-degree-fire-resistant silicone rubber composite material is a solid, soft material, which is easy to feed and extrude. After extrusion molding and drying, it possesses Class A flame-retardant and 1000-degree-fire-resistant properties, while also exhibiting good softness and toughness, good bending performance, and excellent electrical insulation and physical properties. Detailed Implementation Example

[0008] A Class A flame-retardant and fire-resistant silicone rubber composite material with a fire resistance of 1000 degrees Celsius, comprising the following components in parts by weight: 30 parts of composite nano-silica, 10 parts of silica, 60 parts of methyl vinyl silicone rubber, 12 parts of vinyl silicone oil, 10 parts of plasticizer, 1.5 parts of coupling agent, 4 parts of hydrogen-containing silicone oil, and 0.4 parts of platinum catalyst.

[0009] The preparation method of the Class A flame-retardant and 1000-degree fire-resistant silicone rubber composite material includes the following steps: (1) Weigh the following according to the formula: composite nano silica, white carbon black, methyl vinyl silicone rubber, vinyl silicone oil, plasticizer, coupling agent, hydrogen-containing silicone oil, and platinum catalyst; (2) The weighed methyl vinyl silicone rubber and composite nano silica are put into a vacuum kneader, and the silica, vinyl silicone oil, plasticizer, coupling agent, hydrogen-containing silicone oil and platinum catalyst are added at the same time. (3) Control the kneading temperature of the vacuum kneader to 30℃~70℃, stir evenly, and form a solid soft body; (4) After the material is formed into a solid soft form, the vacuum kneader is turned on into a vacuum state. After kneading for another 2 hours, the material is discharged. Example

[0010] A Class A flame-retardant and fire-resistant silicone rubber composite material with a fire resistance of 1000 degrees Celsius, comprising the following components in parts by weight: 50 parts of composite nano-silica, 20 parts of silica, 80 parts of methyl vinyl silicone rubber, 18 parts of vinyl silicone oil, 12 parts of plasticizer, 2.6 parts of coupling agent, 6 parts of hydrogen-containing silicone oil, and 0.6 parts of platinum catalyst.

[0011] The preparation method of the Class A flame-retardant and 1000-degree fire-resistant silicone rubber composite material includes the following steps: (1) Weigh the following according to the formula: composite nano silica, white carbon black, methyl vinyl silicone rubber, vinyl silicone oil, plasticizer, coupling agent, hydrogen-containing silicone oil, and platinum catalyst; (2) The weighed methyl vinyl silicone rubber and composite nano silica are put into a vacuum kneader, and the silica, vinyl silicone oil, plasticizer, coupling agent, hydrogen-containing silicone oil and platinum catalyst are added at the same time. (3) Control the kneading temperature of the vacuum kneader to 30℃~70℃, stir evenly, and form a solid soft body; (4) After it becomes a solid soft material, turn on the vacuum kneader and knead for another 2.5 hours before discharging. Example

[0012] A Class A flame-retardant and fire-resistant silicone rubber composite material with a fire resistance of 1000 degrees Celsius, comprising the following components in parts by weight: 60 parts of composite nano-silica, 30 parts of silica, 100 parts of methyl vinyl silicone rubber, 26 parts of vinyl silicone oil, 18 parts of plasticizer, 3.8 parts of coupling agent, 8 parts of hydrogen-containing silicone oil, and 0.9 parts of platinum catalyst.

[0013] The preparation method of the Class A flame-retardant and 1000-degree fire-resistant silicone rubber composite material includes the following steps: (1) Weigh the following according to the formula: composite nano silica, white carbon black, methyl vinyl silicone rubber, vinyl silicone oil, plasticizer, coupling agent, hydrogen-containing silicone oil, and platinum catalyst; (2) The weighed methyl vinyl silicone rubber and composite nano silica are put into a vacuum kneader, and the silica, vinyl silicone oil, plasticizer, coupling agent, hydrogen-containing silicone oil and platinum catalyst are added at the same time. (3) Control the kneading temperature of the vacuum kneader to 30℃~70℃, stir evenly, and form a solid soft body; (4) After the material is formed into a solid soft form, the vacuum kneader is turned on into a vacuum state. After kneading for another 2.8 hours, the material is discharged. Example

[0014] A Class A flame-retardant and fire-resistant silicone rubber composite material with a fire resistance of 1000 degrees Celsius, comprising the following components in parts by weight: 80 parts of composite nano-silica, 40 parts of silica, 120 parts of methyl vinyl silicone rubber, 32 parts of vinyl silicone oil, 22 parts of plasticizer, 4.6 parts of coupling agent, 11 parts of hydrogen-containing silicone oil, and 1.2 parts of platinum catalyst.

[0015] The preparation method of the Class A flame-retardant and 1000-degree fire-resistant silicone rubber composite material includes the following steps: (1) Weigh the following according to the formula: composite nano silica, white carbon black, methyl vinyl silicone rubber, vinyl silicone oil, plasticizer, coupling agent, hydrogen-containing silicone oil, and platinum catalyst; (2) The weighed methyl vinyl silicone rubber and composite nano silica are put into a vacuum kneader, and the silica, vinyl silicone oil, plasticizer, coupling agent, hydrogen-containing silicone oil and platinum catalyst are added at the same time. (3) Control the kneading temperature of the vacuum kneader to 30℃~70℃, stir evenly, and form a solid soft body; (4) After the material is formed into a solid soft form, the vacuum kneader is turned on into a vacuum state. After kneading for another 3 hours, the material is discharged. This invention provides a Class A flame-retardant and 1000°C fire-resistant silicone rubber composite material, its preparation method, and its application. The material is a solid, soft form, easy to produce, cut, and extruded. After extrusion molding and drying, it exhibits Class A flame retardancy and 1000°C fire resistance, while also possessing good flexibility, good bending performance, and excellent electrical insulation and physical properties.

[0016] This invention is not limited to the specific embodiments described above. Those skilled in the art can make various changes, derive a series of products, and make several simple deductions or substitutions, all of which should be covered within the scope of the claims of this invention.

Claims

1. A Class A flame-retardant and fire-resistant silicone rubber composite material with a temperature resistance of 1000 degrees Celsius, characterized in that, The product comprises the following components in parts by weight: 20-150 parts of composite nano-silica, 10-60 parts of silica, 40-150 parts of methyl vinyl silicone rubber, 10-60 parts of vinyl silicone oil, 5-40 parts of plasticizer, 1-10 parts of coupling agent, 3-40 parts of hydrogen-containing silicone oil, and 0.1-5 parts of platinum catalyst.

2. The Class A flame-retardant and fire-resistant silicone rubber composite material according to claim 1, characterized in that, The product comprises the following components in parts by weight: 20-60 parts of composite nano-silica, 10-20 parts of silica, 40-80 parts of methyl vinyl silicone rubber, 10-20 parts of vinyl silicone oil, 5-15 parts of plasticizer, 1-3 parts of coupling agent, 3-8 parts of hydrogen-containing silicone oil, and 0.1-0.8 parts of platinum catalyst.

3. The Class A flame-retardant and fire-resistant silicone rubber composite material according to claim 1, characterized in that, The product comprises the following components in parts by weight: 40-90 parts of composite nano-silica, 20-40 parts of silica, 60-100 parts of methyl vinyl silicone rubber, 20-40 parts of vinyl silicone oil, 10-25 parts of plasticizer, 2-5 parts of coupling agent, 4-12 parts of hydrogen-containing silicone oil, and 0.3-1.1 parts of platinum catalyst.

4. The Class A flame-retardant and fire-resistant silicone rubber composite material according to claim 1, characterized in that, The product comprises the following components in parts by weight: 60-150 parts of composite nano-silica, 30-60 parts of silica, 90-150 parts of methyl vinyl silicone rubber, 30-60 parts of vinyl silicone oil, 20-40 parts of plasticizer, 3-10 parts of coupling agent, 8-40 parts of hydrogen-containing silicone oil, and 1.5-5 parts of platinum catalyst.

5. The method for preparing the Class A flame-retardant and 1000-degree heat-resistant silicone rubber composite material as described in any one of claims 1-4, characterized in that, Includes the following steps: (1) Weigh the following according to the formula: methyl vinyl silicone rubber, composite nano silica, white carbon black, vinyl silicone oil, plasticizer, coupling agent, hydrogen-containing silicone oil, and platinum catalyst; (2) The weighed methyl vinyl silicone rubber and composite nano silica are put into a vacuum kneader, and at the same time, silica, vinyl silicone oil, plasticizer, coupling agent, hydrogen-containing silicone oil and platinum catalyst are added. (3) Control the kneading temperature of the vacuum kneader at 0-80℃, stir evenly, and form a solid soft body; (4) After forming a solid soft body, vacuum the vacuum kneader and knead it for another 0.5 to 6 hours before discharging.

6. The application of the Class A flame-retardant and 1000-degree heat-resistant silicone rubber composite material according to claim 5, characterized in that, The Class A flame-retardant and 1000-degree fire-resistant silicone rubber composite material is used in the fire-resistant layer, insulation layer and sheath of wires and cables. The wires and cables include a core, a fire-resistant layer, an insulation layer and a sheath. The fire-resistant layer, insulation layer and sheath are wrapped on the core by extrusion.