CN110655701A - HNBR rubber compound for high-temperature-resistant steel wire braided rubber tube and preparation method thereof - Google Patents

Abstract

The invention discloses HNBR rubber compound for a high-temperature-resistant steel wire braided rubber tube, which comprises the following components in percentage by weight: hydrogenated nitrile rubber: 36.5-42.5% of reinforcing filler, 46-54% of softening agent, 1-3% of anti-aging agent, 5-9% of other compounding agent and 2-5% of vulcanization accelerator. The product of the invention has good high temperature resistance, mechanical strength, high temperature oil resistance, good processing performance and physical and mechanical performance.

Description

HNBR rubber compound for high-temperature-resistant steel wire braided rubber tube and preparation method thereof

Technical Field

The invention relates to rubber, in particular to HNBR rubber compound for a high-temperature-resistant steel wire woven rubber tube and a preparation method thereof.

Background

At present, the steel wire pipe mainly takes lightness, compactness and high pressure as main materials, and various industries have higher requirements on the performances of high and low temperature resistance, flex fatigue resistance, aging resistance, special medium resistance and the like.

With the development of the automotive industry, higher demands are made on rubber materials used for automotive fuel and lubrication systems. HNBR has excellent corrosion-resistant fuel oil characteristics and is therefore widely used in fuel oil hoses for automobiles. Because the mineral series high-grade lubricating oil contains various additives such as cleaning dispersant, anti-aging agent, antiwear agent, extreme pressure agent and the like, the additives accelerate the aging of rubber materials, and HNBR has better resistance to lubricating additives than other rubbers. HNBR is mainly used for producing products such as fuel pipes contacting with fuel oil and other oil products, oil supply hoses of oil coolers and the like. Therefore, the HNBR rubber compound for the high-temperature-resistant steel wire braided rubber tube is developed, and has a wide development prospect.

Disclosure of Invention

The invention provides HNBR rubber compound for a high-temperature-resistant steel wire woven rubber tube and a preparation method thereof, aiming at the problems.

In order to achieve the purpose, the invention provides the following technical scheme: the HNBR rubber compound for the high-temperature-resistant steel wire braided rubber tube comprises the following components in parts by weight:

hydrogenated nitrile rubber: 36.5 to 42.5 percent

46 to 54 percent of reinforcing filler

2 to 4 percent of softener

1 to 3 percent of anti-aging agent

5 to 9 percent of other compounding agents

2-5% of a vulcanization accelerator.

Preferably, the HNBR rubber compound for the high-temperature-resistant steel wire woven rubber tube comprises the following components:

hydrogenated nitrile rubber: 38 to 40 percent of the total weight of the steel,

48 to 51% of a reinforcing filler,

2 to 3 percent of softening agent,

1-2% of an anti-aging agent,

5 to 6 percent of compounding agent,

3-4% of a vulcanization accelerator.

Preferably, the HNBR rubber compound for the high-temperature-resistant steel wire woven rubber tube comprises the following components:

hydrogenated nitrile rubber: the content of the raw materials is 37.2%,

49.6 percent of reinforcing filler,

2.5 percent of softening agent,

1.3 percent of anti-aging agent,

5.8 percent of compounding agent,

3.6 percent of vulcanization accelerator.

The nitrile rubber is HNBR THERBAN A3406. The HNBR rubber has good heat resistance and oil resistance, and is suitable for high-temperature-resistant and oil-resistant automobile products such as oil pipes, gaskets, oil seals and the like.

The reinforcing filler is N990. N990 may impart heat resistance to the compound. N990 endows the rubber material with good strength and extrusion process performance, and can improve the bonding effect of the rubber material and the framework material.

The softener is PARAPLEX G25-72. The PARAPLEX G25-72 has low volatility and good heat resistance, can provide good high temperature resistance, and is favorable for high temperature oil because of high molecular weight and good extraction resistance of the product.

The anti-aging agent is a mixture of anti-aging agent 445 and ZMTI. And a proper amount of anti-aging agent is added, so that the requirements of the product on hot air aging resistance and hot oil aging resistance can be further improved.

The compounding agent is a mixture of magnesium oxide, stearic acid and a processing aid.

The vulcanization accelerator is a mixture of F40P-SP2 and HVA-2.

The invention also provides a preparation method of the HNBR rubber compound for the high-temperature-resistant steel wire braided rubber tube, and the preparation method comprises the following steps according to the performance requirement characteristics of the formula.

(1) Preparing materials, wherein according to the whole formula and the mixing characteristic of the nitrile rubber, the preparation sequence is as follows:

hydrogenated nitrile rubber → anti-aging agent, compounding agent → reinforcing filler → softening agent → vulcanization accelerator;

(2) firstly, mixing, namely putting hydrogenated nitrile rubber, an anti-aging agent and a compounding agent into an internal mixer for mixing for 60 s; adding a reinforcing filler into an internal mixer, mixing for 120-180 s, then cleaning an upper ram, adding a softener, mixing for 60-90 s, then discharging and discharging to obtain a mixed rubber A for later use;

(3) and (3) mixing the rubber compound A for 60-80 seconds, cleaning, mixing for 30-60 seconds again, and discharging the sheet for later use after sufficient mixing and dispersion.

The HNBR THERBAN A3406 is used as the main rubber, and the rubber has good heat resistance and oil resistance and can ensure the basic physical properties required by rubber materials. The most outstanding performance of the product is that the heat resistance oil is excellent and the compression deformation performance is good on the premise of taking heat resistance into consideration.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples 1 to 4

The HNBR rubber compound for the high-temperature-resistant steel wire woven rubber tube is manufactured according to the following steps.

Preparing the glue, accurately weighing the raw materials in sequence according to the proportion in the table 1, and standing for later use.

Firstly, mixing, namely putting hydrogenated nitrile rubber, an anti-aging agent and a compounding agent into an internal mixer for mixing for 60 s; firstly, putting a reinforcing filler into an internal mixer, mixing for 120-180 s, then cleaning an upper ram, then putting a softener, mixing for 60-90 s, then discharging and discharging to obtain a mixed rubber A for later use;

and (3) mixing the rubber compound A for 60-80 seconds, cleaning, mixing for 30-60 seconds again, and discharging the sheet for later use after sufficient mixing and dispersion.

Table 1 shows the mixing ratios of the components in examples 1 to 4 in terms of mass fractions.

TABLE 1 examples 1-4 ingredient ratios

TABLE 2 mixing time for examples 1-4

Table 3 shows the performance parameters of the HNBR rubber compound for the high temperature resistant steel wire woven hose prepared in examples 1-4.

Table 3 performance parameters of the articles of examples 1-4

As can be seen from Table 3, the HNBR rubber compound for the high temperature resistant steel wire woven hose of the invention has the following characteristics: firstly, THERBAN A3406 is used as main glue, the high temperature resistance and the oil resistance are both considered, the processing performance is good, and the service life of a product is ensured. The four formulas in the embodiment all meet the requirements of technical parameters of products, and the formula in the embodiment 2 has the optimal performance, because the rubber content is moderate, and the vulcanization system and the protection system are properly matched, the four formulas not only meet the requirements of the technical parameters of the products, but also have better performance advantages. On the premise of meeting other physical property requirements, a matching scheme with optimal cost performance can be reasonably selected according to the price change of the reinforcing filler and the softening agent.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. The HNBR rubber compound for the high-temperature-resistant steel wire braided rubber tube is characterized by comprising the following components in parts by mass:

hydrogenated nitrile rubber: 36.5 to 42.5 percent

46 to 54 percent of reinforcing filler

2 to 4 percent of softener

1 to 3 percent of anti-aging agent

5 to 9 percent of compounding agent

2-5% of a vulcanization accelerator.

2. The HNBR rubber compound for the high temperature resistant steel wire braided hose according to claim 1, wherein the hydrogenated nitrile-butadiene rubber is HNBR THERBAN A3406.

3. The HNBR rubber compound for the high temperature resistant steel wire braided hose according to claim 1, wherein said reinforcing filler is N990.

4. The HNBR compound for the high temperature resistant steel wire woven hose according to claim 1, wherein the softener is PARAPLEXG 25-72.

5. The HNBR rubber compound for the high temperature resistant steel wire braided rubber tube according to claim 1, wherein the anti-aging agent is a mixture of an anti-aging agent 445 and ZMTI.

6. The HNBR rubber compound for the high temperature resistant steel wire braided hose according to claim 1, wherein the compounding agent is a mixture of magnesium oxide, stearic acid and a processing aid.

7. The HNBR compound for the high temperature resistant steel wire braided hose according to claim 1, wherein said vulcanization accelerator is a mixture of F40P-SP2 and HVA-2.

8. The preparation method of the HNBR rubber compound for the high temperature resistant steel wire woven hose according to any one of claims 1 to 7, which is characterized by comprising the following steps: the method sequentially comprises the following steps:

(1) preparing materials in the following sequence:

hydrogenated nitrile rubber → anti-aging agent, compounding agent → reinforcing filler → softening agent → vulcanization accelerator;

(2) firstly, mixing, namely putting hydrogenated nitrile rubber, an anti-aging agent and a compounding agent into an internal mixer for mixing for 60 s; adding a reinforcing filler into an internal mixer, mixing for 120-180 s, then cleaning an upper ram, adding a softener, mixing for 60-90 s, then discharging and discharging to obtain a mixed rubber A for later use;

(3) and (3) mixing the rubber compound A for 60-80 seconds, cleaning, mixing for 30-60 seconds again, and discharging the sheet for later use after sufficient mixing and dispersion.