Hydrogenated nitrile rubber protective adhesive tape and preparation method thereof

Abstract

The invention belongs to the technical field of protective rubberized fabrics, and particularly relates to a hydrogenated butadiene-acrylonitrile rubber protective rubberized fabric and a preparation method thereof. The hydrogenated butadiene-acrylonitrile rubber protective adhesive tape provided by the invention comprises an aramid skeleton layer, a first chloroprene rubber adhesive layer and a second chloroprene rubber adhesive layer which are respectively arranged on the upper surface and the lower surface of the aramid skeleton layer, a first hydrogenated butadiene-acrylonitrile rubber surface adhesive layer arranged on the upper surface of the first chloroprene rubber adhesive layer, and a second hydrogenated butadiene-acrylonitrile rubber surface adhesive layer arranged on the lower surface of the second chloroprene rubber adhesive layer, and the second hydrogenated butadiene-acrylonitrile rubber surface rubber layer is arranged on the lower surface of the second chloroprene rubber adhesive layer. The hydrogenated butadiene-acrylonitrile rubber protective adhesive tape provided by the invention is easy to process, high in product percent of pass, high in adhesive strength, excellent in chemical resistance and weather resistance and excellent in protective performance, can be widely applied to the fields of aerospace, military equipment, transportation and the like, and provides effective protection for various protective scenes.

Description

Technical Field

[0001] The invention belongs to the technical field of protective adhesive tapes, and in particular relates to a hydrogenated nitrile rubber protective adhesive tape and a preparation method thereof. Background Art

[0002] Hydrogenated nitrile rubber (HNBR) is the product of nitrile rubber (NBR) catalytically hydrogenated under specific conditions. Its main chain saturation is relatively high, and it is a new type of highly saturated elastomer material. Compared with nitrile rubber, hydrogenated nitrile rubber not only has the excellent oil resistance of nitrile rubber, but also has better heat-resistant air aging performance than nitrile rubber.

[0003] Aramid fabric is a high-strength, low-elongation, high-temperature resistant fabric made by weaving aramid fibers. Commonly used aramid fibers are made of p-phenylenediamine and terephthaloyl as raw materials, and are prepared by dry-wet spinning technology after low-temperature polycondensation in organic solvents. Due to the presence of benzene ring structure in aramid fibers, aramid fabrics are endowed with high modulus, high strength, chemical stability, and high-temperature dimensional stability, and are widely used in aviation, aerospace, weapons, and other fields.

[0004] The excellent fuel resistance, high temperature resistance, and weather resistance of HNBR and aramid fabrics have led to a strong demand for HNBR and aramid fabric composite materials in the market. However, the aramid surface lacks chemically active groups and has poor surface wettability. At the same time, the high crystallinity in the fiber structure makes the fiber surface smooth, which affects the bonding performance of aramid fabric and HNBR, making it difficult to composite and process. In addition, the double bonds on the HNBR molecular chain are converted into saturated bonds after hydrogenation treatment. Although this change improves its heat resistance and aging resistance, it also leads to a decrease in the flexibility of the molecular chain, an increase in the degree of branching, an increase in viscosity, and a deterioration in fluidity during processing, which will also affect the processing performance of HNBR and aramid fabrics.

[0005] At present, the commonly used processing method is to add an appropriate amount of plasticizer / lubricant to HNBR, such as organic ester lubricants (such as dioctyl phthalate, dibutyl sebacate) or liquid HNBR to reduce the viscosity of HNBR, thereby improving its processing fluidity. However, the addition of these materials will reduce the chemical resistance and weather resistance of the HNBR and aramid fabric composite material, and seriously affect the bonding strength between HNBR and aramid fabric. Summary of the invention

[0006] The object of the present invention is to provide a hydrogenated nitrile rubber protective tape and a preparation method thereof. The hydrogenated nitrile rubber protective tape provided by the present invention is easy to process, has a high product qualification rate, high bonding strength, excellent chemical resistance and weather resistance, and excellent protective performance. It can be widely used in aerospace, military equipment, transportation and other fields, and provides effective protection for various protective scenarios.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] The present invention provides a hydrogenated nitrile rubber protective tape, comprising: an aramid skeleton layer, a first chloroprene rubber adhesive layer and a second chloroprene rubber adhesive layer respectively arranged on the upper surface and the lower surface of the aramid skeleton layer, a first hydrogenated nitrile rubber surface adhesive layer arranged on the upper surface of the first chloroprene rubber adhesive layer, and a second hydrogenated nitrile rubber surface adhesive layer arranged on the lower surface of the second chloroprene rubber adhesive layer;

[0009] The first chloroprene rubber adhesive layer and the second chloroprene rubber adhesive layer independently include the following components in parts by mass: 100 parts of chloroprene rubber, 1-2 parts of stearic acid, 1-2 parts of magnesium oxide, 4-6 parts of zinc oxide, 15-20 parts of white carbon black, 3-4.5 parts of adhesive, 1.5-2.5 parts of accelerator, and 1-1.5 parts of sulfur;

[0010] The first hydrogenated nitrile rubber surface rubber layer and the second hydrogenated nitrile rubber surface rubber layer independently include the following components in parts by weight: 100 parts of hydrogenated nitrile rubber, 6-9 parts of activator, 4-6 parts of vulcanizer, 10-20 parts of reinforcing filler, and 1-2 parts of antioxidant.

[0011] Preferably, in the first hydrogenated nitrile rubber surface rubber layer and the second hydrogenated nitrile rubber surface rubber layer: the active agent includes zinc oxide, magnesium oxide and stearic acid;

[0012] The vulcanizing agent includes accelerator DM, accelerator M and sulfur;

[0013] The reinforcing filler includes carbon black and / or white carbon black;

[0014] The antioxidant includes antioxidant RD and / or antioxidant MB.

[0015] Preferably, the thickness of the first hydrogenated nitrile rubber surface rubber layer and the second hydrogenated nitrile rubber surface rubber layer are independently 0.20 to 0.25 mm.

[0016] Preferably, in the first chloroprene rubber adhesive layer and the second chloroprene rubber adhesive layer: the adhesive comprises adhesive RS and / or adhesive A; the accelerator comprises accelerator TMTD and / or accelerator DM;

[0017] The first chloroprene rubber adhesive layer and the second chloroprene rubber adhesive layer independently include the following components in parts by weight:

[0018] 100 parts of chloroprene rubber, 1-2 parts of stearic acid, 1-2 parts of magnesium oxide, 4-6 parts of zinc oxide, 15-20 parts of white carbon black, 2-2.5 parts of adhesive RS, 1-2 parts of adhesive A, 1-1.5 parts of accelerator TMTD, 0.5-1 part of accelerator DM, and 1-1.5 parts of sulfur.

[0019] Preferably, the thickness of the first chloroprene rubber adhesive layer and the second chloroprene rubber adhesive layer are independently 0.01 to 0.02 mm.

[0020] Preferably, the aramid skeleton layer includes one or more of aramid 1313, aramid 1414 and aramid III.

[0021] Preferably, the thickness of the aramid skeleton layer is 0.2-0.25 mm.

[0022] Preferably, the thickness of the hydrogenated nitrile rubber protective tape is 0.6 to 0.65 mm.

[0023] The present invention provides a method for preparing the hydrogenated nitrile rubber protective tape described in the above technical solution, comprising the following steps:

[0024] Prepare a laminated adhesive structure; the preparation method of the laminated adhesive structure comprises the following steps: coating a first chloroprene rubber adhesive layer material and a second chloroprene rubber adhesive layer material on the upper surface and the lower surface of the aramid skeleton material respectively, coating a first hydrogenated nitrile rubber surface adhesive layer material on the upper surface of the first chloroprene rubber adhesive layer material, and coating a second hydrogenated nitrile rubber surface adhesive layer material on the lower surface of the second chloroprene rubber adhesive layer material;

[0025] The laminated adhesive structure is vulcanized to obtain the hydrogenated nitrile rubber protective tape.

[0026] Preferably, the vulcanization includes sequentially performing a first stage vulcanization and a second stage vulcanization, wherein the temperature of the first stage vulcanization is 100-140°C and the time is 55-60 min, the temperature of the second stage vulcanization is 140-145°C and the time is 55-60 min, and the temperature of the second stage vulcanization is greater than the temperature of the first stage vulcanization.

[0027] The present invention provides a hydrogenated nitrile rubber protective tape, comprising: an aramid skeleton layer, a first chloroprene rubber adhesive layer and a second chloroprene rubber adhesive layer respectively arranged on the upper surface and the lower surface of the aramid skeleton layer, a first hydrogenated nitrile rubber surface adhesive layer arranged on the upper surface of the first chloroprene rubber adhesive layer, and a second hydrogenated nitrile rubber surface adhesive layer arranged on the lower surface of the second chloroprene rubber adhesive layer; the first chloroprene rubber adhesive layer and the second chloroprene rubber adhesive layer independently comprise the following parts by weight: The first hydrogenated nitrile rubber surface rubber layer and the second hydrogenated nitrile rubber surface rubber layer independently include the following components in parts by mass: 100 parts of hydrogenated nitrile rubber, 6 to 9 parts of activator, 4 to 6 parts of vulcanizer, 10 to 20 parts of reinforcing filler and 1 to 2 parts of antioxidant. The invention reasonably designs the formulas of the first chloroprene rubber adhesive layer and the second chloroprene rubber adhesive layer and the first hydrogenated nitrile rubber surface adhesive layer and the second hydrogenated nitrile rubber surface adhesive layer, and at the same time reasonably plans the setting mode of the stacked bonding structure, so that the obtained hydrogenated nitrile rubber protective tape is easy to process, has a high product qualification rate, high bonding strength, excellent chemical resistance and weather resistance, and excellent protective performance. The tape can be widely used in the fields of aerospace, military equipment, transportation, etc., and provides effective protection for various protective scenes. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the cross-sectional structure of the hydrogenated nitrile rubber protective tape provided by the present invention;

[0029] Figure 1 In the figure: 1 is the first hydrogenated nitrile rubber surface rubber layer, 2 is the first chloroprene rubber adhesive layer, 3 is the aramid skeleton layer, 4 is the second chloroprene rubber adhesive layer, and 5 is the second hydrogenated nitrile rubber surface rubber layer. DETAILED DESCRIPTION

[0030] The present invention provides a hydrogenated nitrile rubber protective tape, comprising: an aramid skeleton layer, a first chloroprene rubber adhesive layer and a second chloroprene rubber adhesive layer respectively arranged on the upper surface and the lower surface of the aramid skeleton layer, a first hydrogenated nitrile rubber surface adhesive layer arranged on the upper surface of the first chloroprene rubber adhesive layer, and a second hydrogenated nitrile rubber surface adhesive layer arranged on the lower surface of the second chloroprene rubber adhesive layer;

[0031] The first chloroprene rubber adhesive layer and the second chloroprene rubber adhesive layer independently include the following components in parts by mass: 100 parts of chloroprene rubber, 1-2 parts of stearic acid, 1-2 parts of magnesium oxide, 4-6 parts of zinc oxide, 15-20 parts of white carbon black, 3-4.5 parts of adhesive, 1.5-2.5 parts of accelerator, and 1-1.5 parts of sulfur;

[0032] The first hydrogenated nitrile rubber surface rubber layer and the second hydrogenated nitrile rubber surface rubber layer independently include the following components in parts by weight: 100 parts of hydrogenated nitrile rubber, 6 to 9 parts of activator, 4 to 6 parts of vulcanizer, 10 to 20 parts of reinforcing filler, and 1 to 2 parts of antioxidant.

[0033] In the present invention, unless otherwise specified, all preparation raw materials / components are commercially available products well known to those skilled in the art.

[0034] The structural schematic diagram of the hydrogenated nitrile rubber protective tape provided by the present invention is as follows Figure 1 As shown below, combined Figure 1 , the structure of the hydrogenated nitrile rubber protective tape provided by the present invention is described in detail.

[0035] The hydrogenated nitrile rubber protective tape provided by the present invention includes an aramid skeleton layer 3. In the present invention, the aramid skeleton layer 3 preferably includes one or more of aramid 1313, aramid 1414 and aramid III. In the present invention, the aramid skeleton layer has excellent properties such as ultra-high strength, high modulus, high temperature resistance, acid and alkali resistance, and light weight, and also has good insulation and aging resistance. The thickness of the aramid skeleton layer 3 is preferably 0.2 to 0.25 mm.

[0036] The hydrogenated nitrile rubber protective tape provided by the present invention comprises a first chloroprene rubber adhesive layer 2 and a second chloroprene rubber adhesive layer 4 which are respectively arranged on the upper surface and the lower surface of the aramid skeleton layer.

[0037] In the present invention, the first chloroprene rubber adhesive layer 2 comprises the following components in parts by mass: 100 parts of chloroprene rubber, 1-2 parts of stearic acid, 1-2 parts of magnesium oxide, 4-6 parts of zinc oxide, 15-20 parts of white carbon black, 3-4.5 parts of adhesive, 1.5-2.5 parts of accelerator, and 1-1.5 parts of sulfur. In the present invention, the adhesive preferably comprises adhesive RS and / or adhesive A. Adhesive A is rubber adhesive A, and the chemical name of rubber adhesive A is hexamethoxymethyl melamine. The accelerator preferably comprises accelerator TMTD and / or accelerator DM. The first chloroprene rubber adhesive layer 2 preferably includes the following components in mass fractions: 100 parts of chloroprene rubber, 1 to 2 parts of stearic acid, 1 to 2 parts of magnesium oxide, 4 to 6 parts of zinc oxide, 15 to 20 parts of white carbon black, 2 to 2.5 parts of adhesive RS, 1 to 2 parts of adhesive A, 1 to 1.5 parts of accelerator TMTD, 0.5 to 1 part of accelerator DM, and 1 to 1.5 parts of sulfur. In an embodiment of the present invention, the first chloroprene rubber adhesive layer 2 includes the following components in mass fractions: 100 parts of chloroprene rubber, 1 part of stearic acid, 2 parts of magnesium oxide, 6 parts of zinc oxide, 20 parts of white carbon black, 2.5 parts of adhesive RS, 2 parts of adhesive A, 1.5 parts of accelerator TMTD, 1 part of accelerator DM, and 1.5 parts of sulfur. In the present invention, the thickness of the first chloroprene rubber adhesive layer 2 is preferably 0.01 to 0.02 mm.

[0038] In the present invention, the second chloroprene rubber adhesive layer 4 comprises the following components in parts by mass: 100 parts of chloroprene rubber, 1-2 parts of stearic acid, 1-2 parts of magnesium oxide, 4-6 parts of zinc oxide, 15-20 parts of white carbon black, 3-4.5 parts of adhesive, 1.5-2.5 parts of accelerator, and 1-1.5 parts of sulfur. In the present invention, the adhesive preferably comprises adhesive RS and / or adhesive A. Adhesive A is rubber adhesive A, and the chemical name of rubber adhesive A is hexamethoxymethyl melamine. The accelerator preferably comprises accelerator TMTD and / or accelerator DM. The second chloroprene rubber adhesive layer 4 preferably includes the following components in mass fractions: 100 parts of chloroprene rubber, 1 to 2 parts of stearic acid, 1 to 2 parts of magnesium oxide, 4 to 6 parts of zinc oxide, 15 to 20 parts of white carbon black, 2 to 2.5 parts of adhesive RS, 1 to 2 parts of adhesive A, 1 to 1.5 parts of accelerator TMTD, 0.5 to 1 part of accelerator DM, and 1 to 1.5 parts of sulfur. In an embodiment of the present invention, the second chloroprene rubber adhesive layer 4 includes the following components in mass fractions: 100 parts of chloroprene rubber, 1 part of stearic acid, 2 parts of magnesium oxide, 6 parts of zinc oxide, 20 parts of white carbon black, 2.5 parts of adhesive RS, 2 parts of adhesive A, 1.5 parts of accelerator TMTD, 1 part of accelerator DM, and 1.5 parts of sulfur. In the present invention, the thickness of the second chloroprene rubber adhesive layer 4 is preferably 0.01 to 0.02 mm.

[0039] The hydrogenated nitrile rubber protective tape provided by the present invention comprises a first hydrogenated nitrile rubber surface adhesive layer 1 arranged on the upper surface of the first chloroprene rubber adhesive layer 2, and a second hydrogenated nitrile rubber surface adhesive layer 5 arranged on the lower surface of the second chloroprene rubber adhesive layer 4.

[0040] In the present invention, the first hydrogenated nitrile rubber surface rubber layer 1 comprises the following components in parts by mass: 100 parts of hydrogenated nitrile rubber, 6-9 parts of activator, 4-6 parts of vulcanizer, 10-20 parts of reinforcing filler, and 1-2 parts of antioxidant.

[0041] In parts by mass, the first hydrogenated nitrile rubber surface rubber layer 1 comprises 100 parts of hydrogenated nitrile rubber. In the present invention, the hydrogenated nitrile rubber is preferably AT4364, a product of ARLANXEO High Performance Elastomers Co., Ltd., adopts AT technology, which greatly reduces the Mooney viscosity and thus has excellent processing performance. Its vulcanized rubber has the following excellent properties: excellent heat resistance, and can work for a long time at 150°C without obvious performance degradation; outstanding oil resistance, and has good resistance to fuel oil, lubricating oil, aromatic solvents, etc.; good chemical corrosion resistance, and has good resistance to a variety of chemical substances, such as Freon, acid, alkali, etc.; strong ozone resistance, and can be used for a long time outdoors or in an environment with high ozone concentration without aging.

[0042] Based on the mass fraction of the hydrogenated nitrile rubber, the first hydrogenated nitrile rubber surface rubber layer 1 includes 6 to 9 parts of an active agent, and the embodiment can be 9 parts, 8.5 parts or 8 parts. In the present invention, the active agent preferably includes zinc oxide, magnesium oxide and stearic acid. In the present invention, based on the mass fraction of the hydrogenated nitrile rubber, the active agent preferably includes 3 to 6 parts of zinc oxide, 2 to 4 parts of magnesium oxide and 1 to 2 parts of stearic acid. In a specific embodiment of the present invention, the zinc oxide can be 5 parts, 4 parts, 6 parts or 3 parts, the magnesium oxide can be 2 parts, 3 parts or 4 parts, and the stearic acid can be 1 part, 1.5 parts or 2 parts.

[0043] Based on the mass fraction of the hydrogenated nitrile rubber, the first hydrogenated nitrile rubber surface rubber layer 1 includes 4 to 6 parts of vulcanizer, preferably 4.5 to 5.5 parts, and the embodiment can be 5 parts or 5.5 parts. In the present invention, the vulcanizer preferably includes accelerator DM, accelerator M and sulfur. The vulcanizer provided by the present invention preferably adopts a sulfur vulcanization system, which can ensure the processing performance of the finished product of the hydrogenated nitrile rubber protective tape. In the present invention, based on the mass fraction of the hydrogenated nitrile rubber, the vulcanizer preferably includes 1 to 2.5 parts of accelerator DM, 1.5 to 2.5 parts of accelerator M and 1 to 2 parts of sulfur. In a specific embodiment of the present invention, the accelerator DM can be 2.5 parts, 2 parts, 1.5 parts or 1 part, the accelerator M can be 1.5 parts, 2 parts or 2.5 parts, and the sulfur can be 1 part, 1.5 parts or 2 parts.

[0044] Based on the mass fraction of the hydrogenated nitrile rubber, the first hydrogenated nitrile rubber surface rubber layer 1 includes 10 to 20 parts of reinforcing filler, and the embodiment can be 20 parts. In the present invention, the reinforcing filler preferably includes carbon black and / or white carbon black, and the embodiment can be carbon black or a mixture of carbon black and white carbon black. When the reinforcing filler preferably includes carbon black and white carbon black, based on the mass fraction of the hydrogenated nitrile rubber, the reinforcing filler preferably includes 5 to 15 parts of carbon black and 5 to 15 parts of white carbon black, that is, the mass ratio of the carbon black to the white carbon black is (5 to 15): (5 to 15). In a specific embodiment of the present invention, the carbon black can be 15 parts, 10 parts or 5 parts, and the white carbon black can be 5 parts, 10 parts or 15 parts. In the present invention, the reinforcing effect of the carbon black or the white carbon black in the first hydrogenated nitrile rubber surface rubber layer 1 is significant, and the physical and mechanical properties of the first hydrogenated nitrile rubber surface rubber layer 1 are improved.

[0045] Based on the mass fraction of the hydrogenated nitrile rubber, the first hydrogenated nitrile rubber surface rubber layer 1 includes 1 to 2 parts of antioxidant, and the specific embodiment is 2 parts. In the present invention, the antioxidant includes antioxidant RD and / or antioxidant MB, and the embodiment can be antioxidant RD, or antioxidant MB, or a mixture of antioxidant RD and antioxidant MB. When the antioxidant preferably includes antioxidant RD and antioxidant MB, based on the mass fraction of the hydrogenated nitrile rubber, the antioxidant preferably includes 1 part of antioxidant RD and 1 part of antioxidant MB.

[0046] In the present invention, the thickness of the first hydrogenated nitrile rubber surface rubber layer 1 is preferably 0.20-0.25 mm.

[0047] In the present invention, the second hydrogenated nitrile rubber surface rubber layer 5 comprises the following components in parts by mass: 100 parts of hydrogenated nitrile rubber, 6-9 parts of activator, 4-6 parts of vulcanizer, 10-20 parts of reinforcing filler, and 1-2 parts of antioxidant.

[0048] In parts by mass, the second hydrogenated nitrile rubber surface rubber layer 5 comprises 100 parts of hydrogenated nitrile rubber. In the present invention, the hydrogenated nitrile rubber is preferably AT4364, a product of ARLANXEO High Performance Elastomers Co., Ltd., adopts AT technology, which greatly reduces the Mooney viscosity and thus has excellent processing performance. Its vulcanized rubber has the following excellent properties: excellent heat resistance, and can work for a long time at 150°C without obvious performance degradation; outstanding oil resistance, and has good resistance to fuel oil, lubricating oil, aromatic solvents, etc.; good chemical corrosion resistance, and has good resistance to a variety of chemical substances, such as Freon, acid, alkali, etc.; strong ozone resistance, and can be used for a long time outdoors or in an environment with high ozone concentration without aging.

[0049] Based on the mass fraction of the hydrogenated nitrile rubber, the second hydrogenated nitrile rubber surface rubber layer 5 includes 6 to 9 parts of an active agent, and the embodiment can be 9 parts, 8.5 parts or 8 parts. In the present invention, the active agent preferably includes zinc oxide, magnesium oxide and stearic acid. In the present invention, based on the mass fraction of the hydrogenated nitrile rubber, the active agent preferably includes 3 to 6 parts of zinc oxide, 2 to 4 parts of magnesium oxide and 1 to 2 parts of stearic acid. In a specific embodiment of the present invention, the zinc oxide can be 5 parts, 4 parts, 6 parts or 3 parts, the magnesium oxide can be 2 parts, 3 parts or 4 parts, and the stearic acid can be 1 part, 1.5 parts or 2 parts.

[0050] Based on the mass fraction of the hydrogenated nitrile rubber, the second hydrogenated nitrile rubber surface rubber layer 5 includes 4 to 6 parts of vulcanizer, preferably 4.5 to 5.5 parts, and the embodiment can be 5 parts or 5.5 parts. In the present invention, the vulcanizer preferably includes accelerator DM, accelerator M and sulfur. The vulcanizer provided by the present invention preferably adopts a sulfur vulcanization system, which can ensure the processing performance of the finished product of the hydrogenated nitrile rubber protective tape. In the present invention, based on the mass fraction of the hydrogenated nitrile rubber, the vulcanizer preferably includes 1 to 2.5 parts of accelerator DM, 1.5 to 2.5 parts of accelerator M and 1 to 2 parts of sulfur. In a specific embodiment of the present invention, the accelerator DM can be 2.5 parts, 2 parts, 1.5 parts or 1 part, the accelerator M can be 1.5 parts, 2 parts or 2.5 parts, and the sulfur can be 1 part, 1.5 parts or 2 parts.

[0051] Based on the mass fraction of the hydrogenated nitrile rubber, the second hydrogenated nitrile rubber surface rubber layer 5 includes 10 to 20 parts of reinforcing filler, and the embodiment can be 20 parts. In the present invention, the reinforcing filler preferably includes carbon black and / or white carbon black, and the embodiment can be carbon black or a mixture of carbon black and white carbon black. When the reinforcing filler preferably includes carbon black and white carbon black, based on the mass fraction of the hydrogenated nitrile rubber, the reinforcing filler preferably includes 5 to 15 parts of carbon black and 5 to 15 parts of white carbon black. In a specific embodiment of the present invention, the carbon can be 15 parts, 10 parts or 5 parts, and the white carbon black can be 5 parts, 10 parts or 15 parts. In the present invention, the reinforcing effect of the carbon black or the white carbon black in the second hydrogenated nitrile rubber surface rubber layer 5 is significant, and the physical and mechanical properties of the second hydrogenated nitrile rubber surface rubber layer 5 are improved.

[0052] Based on the mass fraction of the hydrogenated nitrile rubber, the second hydrogenated nitrile rubber surface rubber layer 5 includes 1 to 2 parts of antioxidant, and the embodiment specifically includes 2 parts. In the present invention, the antioxidant includes antioxidant RD and / or antioxidant MB, and the embodiment may be antioxidant RD, or antioxidant MB, or a mixture of antioxidant RD and antioxidant MB. When the antioxidant preferably includes antioxidant RD and antioxidant MB, based on the mass fraction of the hydrogenated nitrile rubber, the antioxidant preferably includes 1 part of antioxidant RD and 1 part of antioxidant MB.

[0053] In the present invention, the thickness of the second hydrogenated nitrile rubber surface rubber layer 5 is preferably 0.20-0.25 mm.

[0054] In the present invention, the hydrogenated nitrile rubber protective tape is a hydrogenated nitrile rubber tape that is easy to process. The thickness of the hydrogenated nitrile rubber protective tape is preferably 0.6 to 0.65 mm.

[0055] The present invention provides a method for preparing the hydrogenated nitrile rubber protective tape described in the above technical solution, comprising the following steps:

[0056] Prepare a laminated adhesive structure; the preparation method of the laminated adhesive structure comprises the following steps: coating a first chloroprene rubber adhesive layer material and a second chloroprene rubber adhesive layer material on the upper surface and the lower surface of the aramid skeleton material respectively, coating a first hydrogenated nitrile rubber surface adhesive layer material on the upper surface of the first chloroprene rubber adhesive layer material, and coating a second hydrogenated nitrile rubber surface adhesive layer material on the lower surface of the second chloroprene rubber adhesive layer material;

[0057] The laminated adhesive structure is vulcanized to obtain the hydrogenated nitrile rubber protective tape.

[0058] The present invention prepares a laminated adhesive structure; the preparation method of the laminated adhesive structure comprises the following steps: coating a first chloroprene rubber adhesive layer material and a second chloroprene rubber adhesive layer material on the upper surface and the lower surface of an aramid skeleton material, coating a first hydrogenated nitrile rubber surface adhesive layer material on the upper surface of the first chloroprene rubber adhesive layer material, and coating a second hydrogenated nitrile rubber surface adhesive layer material on the lower surface of the second chloroprene rubber adhesive layer material. The present invention has no special requirements on the coating methods of the first chloroprene rubber adhesive layer material, the second chloroprene rubber adhesive layer material, the first hydrogenated nitrile rubber surface adhesive layer material and the second hydrogenated nitrile rubber surface adhesive layer material.

[0059] After obtaining the laminated adhesive structure, the present invention vulcanizes the laminated adhesive structure to obtain the hydrogenated nitrile rubber protective tape. In the present invention, the vulcanization preferably includes sequentially performing a first stage vulcanization and a second stage vulcanization, and the temperature of the first stage vulcanization is preferably 100 to 140° C., and the time is preferably 55 to 60 minutes, and in the embodiment, it can be 60 minutes. The temperature of the second stage vulcanization is preferably 140 to 145° C., and the time is preferably 55 to 60 minutes, and in the embodiment, it can be 60 minutes. The temperature of the second stage vulcanization is greater than the temperature of the first stage vulcanization.

[0060] In order to further illustrate the present invention, the technical solutions provided by the present invention are described in detail below in conjunction with embodiments, but they should not be construed as limiting the protection scope of the present invention.

[0061] Example 1

[0062] This embodiment provides a hydrogenated nitrile rubber protective tape, and its structural schematic diagram is as follows Figure 1 As shown, it is obtained by vulcanizing the stacked adhesive structure; the structure of the hydrogenated nitrile rubber protective tape includes: an aramid skeleton layer 3, a first chloroprene rubber adhesive layer 2 and a second chloroprene rubber adhesive layer 4 respectively arranged on the upper surface and the lower surface of the aramid skeleton layer 3, a first hydrogenated nitrile rubber surface adhesive layer 1 arranged on the upper surface of the first chloroprene rubber adhesive layer 2, and a second hydrogenated nitrile rubber surface adhesive layer 5 arranged on the lower surface of the second chloroprene rubber adhesive layer 4.

[0063] The specific preparation method of the hydrogenated nitrile rubber protective tape provided in this embodiment comprises the following steps:

[0064] The chloroprene rubber adhesive is coated on the upper and lower surfaces of the aramid skeleton layer 3 to form a first chloroprene rubber adhesive layer 2 and a second chloroprene rubber adhesive layer 4; the first hydrogenated nitrile rubber surface adhesive layer 1 is coated on the upper surface of the first chloroprene rubber adhesive layer 2, and the second hydrogenated nitrile rubber surface adhesive layer 5 is coated on the lower surface of the second chloroprene rubber adhesive layer 4. Then, the hydrogenated nitrile rubber tape which is easy to process is vulcanized in a vulcanizer. The vulcanization conditions are: 100-140℃×60min, 140-145℃×60min, for a total of 120min.

[0065] The formulas of the first chloroprene rubber adhesive layer 2 and the second chloroprene rubber adhesive layer 4 in this embodiment are shown in Table 1.

[0066] Table 1 Formula of the first chloroprene rubber adhesive layer 2 and the second chloroprene rubber adhesive layer 4

[0067] Raw material name Mass Neoprene 100 Stearic acid 1 Magnesium Oxide 2 Zinc Oxide 6 White Carbon Black 20 Adhesive RS 2.5 Adhesive A 2 Accelerator TMTD 1.5 Accelerator DM 1 sulfur 1.5

[0068] In this embodiment, the formulas of the first hydrogenated nitrile rubber surface rubber layer 1 and the second hydrogenated nitrile rubber surface rubber layer 5 are shown in Table 2.

[0069] Example 2

[0070] The preparation method of the hydrogenated nitrile rubber protective tape is basically the same as that provided in Example 1, except that the formulas of the first hydrogenated nitrile rubber surface rubber layer 1 and the second hydrogenated nitrile rubber surface rubber layer 5 in Example 2 are as shown in Table 2.

[0071] Example 3

[0072] The preparation method of the hydrogenated nitrile rubber protective tape is basically the same as that provided in Example 1, except that the formulas of the first hydrogenated nitrile rubber surface rubber layer 1 and the second hydrogenated nitrile rubber surface rubber layer 5 in Example 3 are as shown in Table 2.

[0073] Example 4

[0074] The preparation method of the hydrogenated nitrile rubber protective tape is basically the same as that provided in Example 1, except that the formulas of the first hydrogenated nitrile rubber surface rubber layer 1 and the second hydrogenated nitrile rubber surface rubber layer 5 in Example 4 are as shown in Table 2.

[0075] Comparative Example 1

[0076] The preparation method of the hydrogenated nitrile rubber protective tape is basically the same as that provided in Example 1, except that: the formulas of the first hydrogenated nitrile rubber surface rubber layer 1 and the second hydrogenated nitrile rubber surface rubber layer 5 in Comparative Example 1 are as shown in Table 2.

[0077] Table 2 Formula of the first hydrogenated nitrile rubber surface rubber layer 1 and the second hydrogenated nitrile rubber surface rubber layer 5

[0078]

[0079]

[0080] Test Case

[0081] The performance test results of the hydrogenated nitrile rubber protective tapes prepared in Examples 1 to 4 and Comparative Example 1 are shown in Table 3.

[0082] Table 3 Performance test results of hydrogenated nitrile rubber protective tapes prepared in Examples 1 to 4 and Comparative Example 1

[0083]

[0084]

[0085] From the performance comparison of the products obtained in Examples 1 to 4 and Comparative Example 1, it can be seen that: Examples 1 to 4 of the present invention use hydrogenated nitrile rubber AT4364 is used as raw material, compared with hydrogenated nitrile rubber used in Comparative Example 1 4367, Examples 1 to 4 do not require the addition of oil plasticizer (dibutyl sebacate), and the final product has good processing performance, while Comparative Example 1 uses hydrogenated nitrile rubber 4367, and also requires compounding of oil plasticizer (dibutyl sebacate), and the cost is higher than that of the products of Examples 1 to 4.

[0086] It can be seen from the above embodiments that the hydrogenated nitrile rubber protective tape provided by the present invention reasonably designs the formulas of the first chloroprene rubber adhesive layer and the second chloroprene rubber adhesive layer and the first hydrogenated nitrile rubber surface adhesive layer and the second hydrogenated nitrile rubber surface adhesive layer, and at the same time reasonably plans the setting mode of the stacked bonding structure. The hydrogenated nitrile rubber protective tape obtained by vulcanization is easy to process, has a high product qualification rate, high bonding strength, excellent chemical resistance and weather resistance, and excellent protective performance. It can be widely used in aerospace, military equipment, transportation and other fields to provide effective protection for various protective scenarios.

[0087] Although the above embodiment describes the present invention in detail, it is only a part of the embodiments of the present invention, not all of the embodiments. Other embodiments can be obtained based on this embodiment without creativity, and these embodiments all fall within the protection scope of the present invention.

Claims

1. A hydrogenated nitrile rubber protective tape, characterized in that: It comprises an aramid skeleton layer, a first chloroprene rubber adhesive layer and a second chloroprene rubber adhesive layer respectively arranged on the upper surface and the lower surface of the aramid skeleton layer, a first hydrogenated nitrile rubber surface rubber layer arranged on the upper surface of the first chloroprene rubber adhesive layer, and a second hydrogenated nitrile rubber surface rubber layer arranged on the lower surface of the second chloroprene rubber adhesive layer; The first chloroprene rubber adhesive layer and the second chloroprene rubber adhesive layer independently include the following components in parts by mass: 100 parts of chloroprene rubber, 1-2 parts of stearic acid, 1-2 parts of magnesium oxide, 4-6 parts of zinc oxide, 15-20 parts of white carbon black, 3-4.5 parts of adhesive, 1.5-2.5 parts of accelerator, and 1-1.5 parts of sulfur; The first hydrogenated nitrile rubber surface rubber layer and the second hydrogenated nitrile rubber surface rubber layer independently include the following components in parts by weight: 100 parts of hydrogenated nitrile rubber, 6-9 parts of activator, 4-6 parts of vulcanizer, 10-20 parts of reinforcing filler, and 1-2 parts of antioxidant.

2. The hydrogenated nitrile rubber protective tape according to claim 1, characterized in that: In the first hydrogenated nitrile rubber surface rubber layer and the second hydrogenated nitrile rubber surface rubber layer: the active agent includes zinc oxide, magnesium oxide and stearic acid; The vulcanizing agent includes accelerator DM, accelerator M and sulfur; The reinforcing filler includes carbon black and / or white carbon black; The antioxidant includes antioxidant RD and / or antioxidant MB.

3. The hydrogenated nitrile rubber protective tape according to claim 1, characterized in that: The thickness of the first hydrogenated nitrile rubber surface rubber layer and the second hydrogenated nitrile rubber surface rubber layer are independently 0.20 to 0.25 mm.

4. The hydrogenated nitrile rubber protective tape according to claim 1, characterized in that: In the first chloroprene rubber adhesive layer and the second chloroprene rubber adhesive layer: the adhesive comprises adhesive RS and / or adhesive A; the accelerator comprises accelerator TMTD and / or accelerator DM; The first chloroprene rubber adhesive layer and the second chloroprene rubber adhesive layer independently include the following components in parts by weight: 100 parts of chloroprene rubber, 1-2 parts of stearic acid, 1-2 parts of magnesium oxide, 4-6 parts of zinc oxide, 15-20 parts of white carbon black, 2-2.5 parts of adhesive RS, 1-2 parts of adhesive A, 1-1.5 parts of accelerator TMTD, 0.5-1 part of accelerator DM, and 1-1.5 parts of sulfur.

5. The hydrogenated nitrile rubber protective tape according to claim 1, characterized in that: The thickness of the first chloroprene rubber adhesive layer and the second chloroprene rubber adhesive layer are independently 0.01 to 0.02 mm.

6. The hydrogenated nitrile rubber protective tape according to claim 1, characterized in that: The aramid skeleton layer includes one or more of aramid 1313, aramid 1414 and aramid III.

7. The hydrogenated nitrile rubber protective tape according to claim 1, characterized in that: The thickness of the aramid skeleton layer is 0.2-0.25 mm.

8. The hydrogenated nitrile rubber protective tape according to claim 1, 3, 5 or 7, characterized in that: The thickness of the hydrogenated nitrile rubber protective tape is 0.6-0.65 mm.

9. The method for preparing the hydrogenated nitrile rubber protective tape according to any one of claims 1 to 8, characterized in that: The following steps are involved: Prepare a laminated adhesive structure; the preparation method of the laminated adhesive structure comprises the following steps: coating a first chloroprene rubber adhesive layer material and a second chloroprene rubber adhesive layer material on the upper surface and the lower surface of the aramid skeleton material respectively, coating a first hydrogenated nitrile rubber surface adhesive layer material on the upper surface of the first chloroprene rubber adhesive layer material, and coating a second hydrogenated nitrile rubber surface adhesive layer material on the lower surface of the second chloroprene rubber adhesive layer material; The laminated adhesive structure is vulcanized to obtain the hydrogenated nitrile rubber protective tape.

10. The preparation method according to claim 9, characterized in that: The vulcanization includes sequentially performing first stage vulcanization and second stage vulcanization, wherein the temperature of the first stage vulcanization is 100-140°C and the time is 55-60 min, and the temperature of the second stage vulcanization is 140-145°C and the time is 55-60 min, and the temperature of the second stage vulcanization is greater than the temperature of the first stage vulcanization.

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