Rubber type adhesive for flat water hose as well as preparation method and application of rubber type adhesive

Abstract

The invention discloses a rubber type adhesive for a flat water hose as well as a preparation method and application of the rubber type adhesive. The rubber type adhesive is prepared from the following components in parts by weight: 20.0 to 40.0 parts of ethylene propylene diene monomer, 30.0 to 50.0 parts of natural rubber, 20.0 to 40.0 parts of chloroprene rubber, 10.0 to 30.0 parts of liquid ethylene propylene diene monomer, 1.0 to 3.0 parts of vulcanizing agent, 2.0 to 7.0 parts of activating agent, 0.5 to 2.0 parts of stearic acid, 20.0 to 40.0 parts of filler, 20.0 to 40.0 parts of white carbon black and 2.0 to 5.0 parts of accelerant. The preparation method comprises the following steps: S1, mixing the components except the accelerant and the vulcanizing agent in parts by weight by using a closed internal mixer, and carrying out rubber mixing; and S2, standing for 8-24 hours after rubber discharging, and adding the accelerant and the vulcanizing agent by using an open rubber mixing mill for rubber mixing to obtain the rubber type adhesive.

Description

Technical Field

[0001] The invention relates to the technical field of flat water hoses, and in particular to a rubber-type adhesive for flat water hoses and a preparation method and application thereof. Background Art

[0002] At present, flat hoses are widely used in fire rescue, agricultural irrigation, engineering drainage, and liquid and gas transportation. Therefore, this puts forward higher requirements on the durability of flat hoses.

[0003] However, plastic adhesives are commonly used in current flat water hoses to bond the flat water hose body and the braided layer in the flat water hose. However, plastic adhesives are very brittle at low temperatures, which makes it difficult to reel in the flat water hose and prone to damage under low temperature conditions. At high temperatures (above 70°C), plastic adhesives are easy to melt, resulting in the failure of the bonding effect. This has greatly restricted the use of flat water hoses. Summary of the invention

[0004] The purpose of the present invention is to provide a rubber-type adhesive for flat water hoses, which can solve the problems of high brittleness at low temperatures and easy melting at high temperatures of the existing adhesives, leading to failure, which greatly restricts the use of the existing flat water hoses.

[0005] To achieve the above object, the present invention is implemented by the following technical solutions:

[0006] The present invention provides a rubber-type adhesive for a flat water hose, the rubber-type adhesive comprising the following components in parts by weight:

[0007] 20.0-40.0 parts of EPDM rubber, 30.0-50.0 parts of natural rubber, 20.0-40.0 parts of chloroprene rubber, 10.0-30.0 parts of liquid EPDM rubber, 1.0-3.0 parts of vulcanizing agent, 2.0-7.0 parts of activator, 0.5-2.0 parts of stearic acid, 20.0-40.0 parts of filler, 20.0-40.0 parts of white carbon black and 2.0-5.0 parts of accelerator.

[0008] Further, a rubber-type adhesive for a flat hose: the rubber-type adhesive comprises the following components in parts by weight:

[0009] 25.0-35.0 parts of EPDM rubber, 35.0-45.0 parts of natural rubber, 25.0-35.0 parts of chloroprene rubber, 15.0-25.0 parts of liquid EPDM rubber, 1.5-2.5 parts of vulcanizing agent, 4.0-6.0 parts of activator, 0.5-1.5 parts of stearic acid, 25.0-35.0 parts of filler, 25.0-35.0 parts of white carbon black and 3.0-4.0 parts of accelerator.

[0010] Further, a rubber-type adhesive for a flat hose: the rubber-type adhesive comprises the following components in parts by weight:

[0011] 30.0 parts of EPDM rubber, 40.0 parts of natural rubber, 30.0 parts of chloroprene rubber, 20.0 parts of liquid EPDM rubber, 1.8 parts of vulcanizing agent, 5.0 parts of activator, 1.0 parts of stearic acid, 30.0 parts of filler, 30.0 parts of white carbon black and 3.5 parts of accelerator.

[0012] Furthermore, a rubber-type adhesive for a flat water hose: the natural rubber is selected from any one of No. 5 natural rubber, No. 10 natural rubber, and No. 20 natural rubber.

[0013] Furthermore, a rubber-type adhesive for a flat water hose: the vulcanizing agent is selected from any one of sulfur, rubber vulcanizing agent DTDM, and rubber vulcanizing agent TMTD.

[0014] Furthermore, in a rubber-type adhesive for a flat water hose, the activator is zinc oxide.

[0015] Furthermore, a rubber-type adhesive for a flat water hose: the filler is selected from any one of light calcium carbonate, heavy calcium carbonate, nano calcium carbonate, and talcum powder.

[0016] Furthermore, a rubber-type adhesive for a flat water hose: the accelerator is selected from any one of accelerator DM, accelerator CZ, and accelerator NS.

[0017] The present invention also provides a method for preparing a rubber-type adhesive for a flat water hose, the method comprising the following specific steps:

[0018] S1. Mix the ingredients other than the accelerator and the vulcanizing agent by weight using a closed internal mixer to mix the rubber;

[0019] S2, after the rubber is discharged, the mixture is left to stand for 8 to 24 hours, and then an open rubber mixer is used to add the accelerator and the vulcanizing agent to mix the rubber to obtain a rubber-type adhesive.

[0020] The present invention also provides an application of a rubber-type adhesive for a flat water hose, wherein the flat water hose comprises a flat water hose body and a woven layer composited on the flat water hose body, and the rubber-type adhesive is used to bond the flat water hose body and the woven layer.

[0021] Beneficial effects of the present invention:

[0022] The present invention solves the problem that currently used plastic adhesives are easily melted and fail at temperatures above 70°C and the problem that plastic adhesives are relatively brittle under low temperature conditions by optimizing the design of the rubber adhesive formula. The rubber adhesive provided by the present invention is applicable in a temperature range of -40°C to 120°C.

[0023] The preferred accelerator in the rubber-type adhesive of the present invention can promote the vulcanization process, shorten the vulcanization time, and reduce the amount of the vulcanizing agent. At the same time, the activator zinc oxide selected in the present invention can also react with the vulcanizing agent, the accelerator and the EPDM rubber to increase the crosslinking degree of the vulcanization process, so that a large number of crosslinking bonds exist in the rubber-type adhesive, which will not melt at high temperatures and will not become brittle at low temperatures.

[0024] The present invention adopts liquid EPDM rubber in the rubber type adhesive formula, which has a faster vulcanization speed and better low temperature elasticity, and can significantly improve the flexibility of the adhesive under low temperature conditions, thereby solving the problem of high low temperature brittleness of existing plastic type adhesives. The present invention selects liquid EPDM rubber to replace part of high molecular weight EPDM rubber, and can also significantly reduce the colloid viscosity during the mixing process, thereby improving the processing conditions of the rubber type adhesive. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Example 1

[0027] This embodiment 1 provides a rubber-type adhesive for a flat hose, and the rubber-type adhesive includes the following components in parts by weight:

[0028] 30.0 parts of EPDM rubber, 40.0 parts of natural rubber, 30.0 parts of chloroprene rubber, 20.0 parts of liquid EPDM rubber, 1.8 parts of vulcanizing agent, 5.0 parts of activator, 1.0 parts of stearic acid, 30.0 parts of filler, 30.0 parts of white carbon black and 3.5 parts of accelerator;

[0029] The natural rubber is No. 5 natural rubber, and its impurity content is 0.05%; the vulcanizing agent is sulfur; the activator is zinc oxide; the filler is light calcium carbonate; and the accelerator is accelerator CZ.

[0030] The method for preparing the rubber-type adhesive for the flat hose in the above-mentioned embodiment 1 comprises the following specific steps:

[0031] S1. By weight, 30.0 parts of EPDM rubber, 40.0 parts of natural rubber, 30.0 parts of chloroprene rubber, 20.0 parts of liquid EPDM rubber, 5.0 parts of activator, 1.0 parts of stearic acid, 30.0 parts of filler and 30.0 parts of white carbon black are mixed and refined using a closed internal mixer;

[0032] S2. After the rubber is produced, the mixture is left to stand for 24 hours, and then 3.5 parts of an accelerator and 1.8 parts of a vulcanizing agent are added to the mixture using an open rubber mixer to perform rubber mixing, thereby obtaining a rubber-type adhesive.

[0033] Example 2

[0034] This embodiment 2 provides a rubber-type adhesive for a flat hose, and the rubber-type adhesive includes the following components in parts by weight:

[0035] 25.0 parts of EPDM rubber, 35.0 parts of natural rubber, 25.0 parts of chloroprene rubber, 15.0 parts of liquid EPDM rubber, 1.5 parts of vulcanizing agent, 4.0 parts of activator, 0.5 parts of stearic acid, 25.0 parts of filler, 25.0 parts of white carbon black and 3.0 parts of accelerator;

[0036] The natural rubber is No. 5 natural rubber, and its impurity content is 0.05%; the vulcanizing agent is rubber vulcanizing agent DTDM; the activating agent is zinc oxide; the filler is nano calcium carbonate; and the accelerator is accelerator DM.

[0037] The method for preparing the rubber-type adhesive for the flat hose in the above-mentioned embodiment 2 comprises the following specific steps:

[0038] S1. By weight, 25.0 parts of EPDM rubber, 35.0 parts of natural rubber, 25.0 parts of chloroprene rubber, 15.0 parts of liquid EPDM rubber, 4.0 parts of activator, 0.5 parts of stearic acid, 25.0 parts of filler and 25.0 parts of white carbon black are mixed and refined using a closed internal mixer;

[0039] S2. After the rubber is discharged, the mixture is left to stand for 16 hours, and then 3.0 parts of an accelerator and 1.5 parts of a vulcanizing agent are added to perform rubber mixing using an open rubber mixing machine, thereby obtaining a rubber-type adhesive.

[0040] Example 3

[0041] This embodiment 3 provides a rubber-type adhesive for a flat hose, and the rubber-type adhesive includes the following components in parts by weight:

[0042] 35.0 parts of EPDM rubber, 45.0 parts of natural rubber, 35.0 parts of chloroprene rubber, 25.0 parts of liquid EPDM rubber, 2.5 parts of vulcanizing agent, 6.0 parts of activator, 1.5 parts of stearic acid, 35.0 parts of filler, 35.0 parts of white carbon black and 4.0 parts of accelerator;

[0043] The natural rubber is No. 5 natural rubber, and its impurity content is 0.05%; the vulcanizer is rubber vulcanizer TMTD; the activator is zinc oxide; the filler is talcum powder; and the accelerator is accelerator NS.

[0044] The method for preparing the rubber-type adhesive for the flat hose in the above-mentioned embodiment 3 comprises the following specific steps:

[0045] S1. By weight, 35.0 parts of EPDM rubber, 45.0 parts of natural rubber, 35.0 parts of chloroprene rubber, 25.0 parts of liquid EPDM rubber, 6.0 parts of activator, 1.5 parts of stearic acid, 35.0 parts of filler and 35.0 parts of white carbon black are mixed and refined using a closed internal mixer;

[0046] S2. After the rubber is discharged, the mixture is left to stand for 12 hours, and then 4.0 parts of an accelerator and 2.5 parts of a vulcanizing agent are added to perform rubber mixing using an open rubber mixing machine, thereby obtaining a rubber-type adhesive.

[0047] Example 4

[0048] This embodiment 4 provides a rubber-type adhesive for a flat hose, and the rubber-type adhesive includes the following components in parts by weight:

[0049] 21.0 parts of EPDM rubber, 30.0 parts of natural rubber, 20.0 parts of chloroprene rubber, 12.0 parts of liquid EPDM rubber, 1.1 parts of vulcanizing agent, 2.0 parts of activator, 0.6 parts of stearic acid, 20.0 parts of filler, 20.5 parts of white carbon black and 2.1 parts of accelerator;

[0050] The natural rubber is No. 5 natural rubber, and its impurity content is 0.05%; the vulcanizing agent is sulfur; the activator is zinc oxide; the filler is light calcium carbonate; and the accelerator is accelerator CZ.

[0051] The method for preparing the rubber-type adhesive for the flat hose in the above-mentioned embodiment 4 comprises the following specific steps:

[0052] S1. By weight, 21.0 parts of EPDM rubber, 30.0 parts of natural rubber, 20.0 parts of chloroprene rubber, 12.0 parts of liquid EPDM rubber, 2.0 parts of activator, 0.6 parts of stearic acid, 20.0 parts of filler and 20.5 parts of white carbon black are mixed and refined using a closed internal mixer;

[0053] S2. After the rubber is discharged, the mixture is left to stand for 8 hours, and then 2.1 parts of an accelerator and 1.1 parts of a vulcanizing agent are added to an open rubber mixer for rubber mixing, thereby obtaining a rubber-type adhesive.

[0054] Example 5

[0055] This embodiment 5 provides a rubber-type adhesive for a flat hose, and the rubber-type adhesive includes the following components in parts by weight:

[0056] 39.5 parts of EPDM rubber, 48.0 parts of natural rubber, 39.0 parts of chloroprene rubber, 30.0 parts of liquid EPDM rubber, 3.0 parts of vulcanizing agent, 6.5 parts of activator, 1.7 parts of stearic acid, 39.0 parts of filler, 40.0 parts of white carbon black and 4.9 parts of accelerator;

[0057] The natural rubber is No. 5 natural rubber, and its impurity content is 0.05%; the vulcanizing agent is sulfur; the activator is zinc oxide; the filler is light calcium carbonate; and the accelerator is accelerator CZ.

[0058] The method for preparing the rubber-type adhesive for the flat hose in the above-mentioned embodiment 5 comprises the following specific steps:

[0059] S1. By weight, 39.5 parts of EPDM rubber, 48.0 parts of natural rubber, 39.0 parts of chloroprene rubber, 30.0 parts of liquid EPDM rubber, 6.5 parts of activator, 1.7 parts of stearic acid, 39.0 parts of filler and 40.0 parts of white carbon black are mixed and refined using a closed internal mixer;

[0060] S2. After the rubber is discharged, the mixture is left to stand for 10 hours, and then 4.9 parts of an accelerator and 3.0 parts of a vulcanizing agent are added to perform rubber mixing using an open rubber mixer to obtain a rubber-type adhesive.

[0061] Example 6

[0062] Provided is an application of a rubber-type adhesive for a flat water hose, wherein the flat water hose comprises a flat water hose body and a woven layer compounded on the flat water hose body, and the rubber-type adhesive is used to bond the flat water hose body and the woven layer; specifically, a rubber extruder is used to extrude the rubber-type adhesive of Example 1 into a tube, and then the tube is compounded onto the flat water hose body through a mold, and a steam pressure of 3.5 kg is applied to bond the flat water hose body to the woven fabric.

[0063] The rubber-type adhesive provided by the present invention is a thermosetting adhesive. The flexibility of the rubber-type adhesive under low temperature conditions can be significantly improved through the optimization design of the formula, so that the rubber-type adhesive will not become brittle at low temperatures. At the same time, the present invention optimizes the formula so that a large number of cross-linking bonds exist in the rubber-type adhesive. Due to the presence of cross-linking bonds and the fact that the rubber-type adhesive is thermosetting, it will not melt at high temperatures.

[0064] The rubber-type adhesive of the present invention can be used normally at -40°C to 120°C, solving the problem that the currently used plastic-type adhesive is easily melted and ineffective under high temperature conditions and the problem that the plastic-type adhesive is relatively brittle under low temperature conditions, thereby removing the restrictions on the use of flat water hoses caused by the defects of traditional adhesives.

[0065] The above are preferred embodiments of the present invention and are only used to explain the present invention, not to limit the present invention. Any obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A rubber-type adhesive for a flat hose, characterized in that: The rubber adhesive comprises the following components in parts by weight: 20.0-40.0 parts of EPDM rubber, 30.0-50.0 parts of natural rubber, 20.0-40.0 parts of chloroprene rubber, 10.0-30.0 parts of liquid EPDM rubber, 1.0-3.0 parts of vulcanizing agent, 2.0-7.0 parts of activator, 0.5-2.0 parts of stearic acid, 20.0-40.0 parts of filler, 20.0-40.0 parts of white carbon black and 2.0-5.0 parts of accelerator.

2. The rubber-type adhesive for a flat hose according to claim 1, characterized in that: The rubber adhesive comprises the following components in parts by weight: 25.0-35.0 parts of EPDM rubber, 35.0-45.0 parts of natural rubber, 25.0-35.0 parts of chloroprene rubber, 15.0-25.0 parts of liquid EPDM rubber, 1.5-2.5 parts of vulcanizing agent, 4.0-6.0 parts of activator, 0.5-1.5 parts of stearic acid, 25.0-35.0 parts of filler, 25.0-35.0 parts of white carbon black and 3.0-4.0 parts of accelerator.

3. A rubber-type adhesive for a flat hose according to claim 1 or 2, characterized in that: The rubber adhesive comprises the following components in parts by weight: 30.0 parts of EPDM rubber, 40.0 parts of natural rubber, 30.0 parts of chloroprene rubber, 20.0 parts of liquid EPDM rubber, 1.8 parts of vulcanizing agent, 5.0 parts of activator, 1.0 parts of stearic acid, 30.0 parts of filler, 30.0 parts of white carbon black and 3.5 parts of accelerator.

4. A rubber-type adhesive for a flat hose according to any one of claims 1 to 3, characterized in that: The natural rubber is selected from any one of No. 5 natural rubber, No. 10 natural rubber and No. 20 natural rubber.

5. A rubber-type adhesive for a flat hose according to any one of claims 1 to 3, characterized in that: The vulcanizing agent is selected from any one of sulfur, rubber vulcanizing agent DTDM and rubber vulcanizing agent TMTD.

6. A rubber-type adhesive for a flat hose according to any one of claims 1 to 3, characterized in that: The activator is zinc oxide.

7. A rubber-type adhesive for a flat hose according to any one of claims 1 to 3, characterized in that: The filler is selected from any one of light calcium carbonate, heavy calcium carbonate, nano calcium carbonate and talcum powder.

8. The rubber-type adhesive for a flat hose according to any one of claims 1 to 3, characterized in that: The accelerator is selected from any one of accelerator DM, accelerator CZ and accelerator NS.

9. The method for preparing a rubber-type adhesive for a flat hose according to any one of claims 1 to 8, characterized in that: The method comprises the following steps: S1. Mix the ingredients other than the accelerator and the vulcanizing agent by weight using a closed internal mixer to mix the rubber; S2, after the rubber is discharged, the mixture is left to stand for 8 to 24 hours, and then an open rubber mixer is used to add the accelerator and the vulcanizing agent to mix the rubber to obtain a rubber-type adhesive.

10. The use of a rubber-type adhesive for a flat hose according to any one of claims 1 to 8, characterized in that: The flat water hose comprises a flat water hose body and a woven layer compounded on the flat water hose body, and the rubber-type adhesive is used for bonding the flat water hose body and the woven layer.