Rubber and plastic processing aid and preparation method thereof

文档序号：1826698 发布日期：2021-11-12 浏览：35次中文

阅读说明：本技术 一种橡塑加工助剂及其制备方法 (Rubber and plastic processing aid and preparation method thereof ) 是由不公告发明人于 2021-08-16 设计创作，主要内容包括：本发明公开一种橡塑加工助剂,包括如下重量份原料：硬脂酸200-300份、无水三氯化铝20-40份、氧化锌6-10份、油酸锌20-30份、第一组分40-50份和第二组分36-40份；一种橡塑加工助剂的制备方法,包括如下步骤：第一步、按重量份称取原料；第二步、先向反应釜中加入硬脂酸,加热至125-155℃,然后加入无水三氯化铝,保持温度不变反应2-3h,然后再加入氧化锌,保持温度不变反应1.5-5h；第三步、向反应釜中加入油酸锌、第一组分和第二组分,混合均匀,在温度为120℃条件下反应35-45min得到混合物料；将混合物料送入造粒挤出机进行造粒,即得一种橡塑加工助剂。(The invention discloses a rubber and plastic processing aid which comprises the following raw materials in parts by weight: 300 parts of stearic acid, 20-40 parts of anhydrous aluminum trichloride, 6-10 parts of zinc oxide, 20-30 parts of zinc oleate, 40-50 parts of a first component and 36-40 parts of a second component; a preparation method of a rubber and plastic processing aid comprises the following steps: firstly, weighing raw materials in parts by weight; secondly, adding stearic acid into a reaction kettle, heating to the temperature of 125-; thirdly, adding zinc oleate, the first component and the second component into a reaction kettle, uniformly mixing, and reacting for 35-45min at the temperature of 120 ℃ to obtain a mixed material; and (3) feeding the mixed material into a granulation extruder for granulation to obtain the rubber and plastic processing aid.)

1. The rubber and plastic processing aid is characterized by comprising the following raw materials in parts by weight:

300 parts of stearic acid, 20-40 parts of anhydrous aluminum trichloride, 6-10 parts of zinc oxide, 20-30 parts of zinc oleate, 40-50 parts of a first component and 36-40 parts of a second component;

the rubber and plastic processing aid is prepared by the following steps:

firstly, weighing raw materials in parts by weight;

secondly, adding stearic acid into a reaction kettle, heating to the temperature of 125-;

thirdly, adding zinc oleate, the first component and the second component into a reaction kettle, uniformly mixing, and reacting for 35-45min at the temperature of 120 ℃ to obtain a mixed material; and (3) feeding the mixed material into a granulation extruder for granulation to obtain the rubber and plastic processing aid.

2. The rubber-plastic processing aid according to claim 1, wherein the first component is prepared by the steps of:

step S11, adding deionized water, concentrated hydrochloric acid, piperazine and phosphorous acid into a three-neck flask, setting the temperature at 25 ℃ and the rotating speed at 300r/min, stirring until the phosphorous acid is completely dissolved, dropwise adding formaldehyde by using a constant-pressure dropping funnel, controlling the dropwise adding speed at 1 drop per second, keeping the temperature and the rotating speed unchanged after the dropwise adding is finished, continuing stirring for reaction for 12 hours, transferring the obtained reaction liquid into a rotary evaporator after the reaction is finished, obtaining a white solid after the rotary evaporation, and then drying the white solid at 100 ℃ in vacuum to constant weight to obtain an intermediate 1;

step S12, mixing and dissolving the intermediate 1, n-propanol and deionized water to obtain a mixed solution a for later use, adding hydrofluoric acid and zirconium oxychloride into a beaker filled with deionized water, starting stirring under the condition that the rotating speed is 200r/min, then dropwise adding the mixed solution a by using a constant-pressure dropping funnel, after dropwise adding, drying the obtained reaction solution at 80 ℃ for 48 hours, precipitating crystals, then carrying out vacuum filtration, washing the obtained filter cake with distilled water, and drying at 100 ℃ to constant weight after washing to obtain a solid b;

3. The rubber-plastic processing aid according to claim 2, wherein the mass fraction of the concentrated hydrochloric acid in step S11 is 38%, and the usage ratio of the deionized water, the concentrated hydrochloric acid, the piperazine, the phosphorous acid and the formaldehyde is 75 mL: 20mL of: 0.1 mol: 0.2 mol: 0.4 mol; the dosage ratio of the n-propanol, the intermediate 1 and the deionized water in the step S12 is 100 mL: 17-18 g: 6 mL; the dosage ratio of the hydrofluoric acid, the zirconium oxychloride, the deionized water and the mixed liquid a is 15 g: 16g of: 200mL of: 100-; in the step S13, the mass ratio of the propyl tri (dioctyl pyrophosphato acyloxy) titanate to the acetone to the solid b is 1: 6-7: 1.

4. the rubber-plastic processing aid according to claim 1, wherein the second component is prepared by the steps of:

step S21, adding an antioxidant into the reaction kettle, setting the temperature at 110-160 ℃, then adding microcrystalline wax and polyethylene wax, and stirring for 20-40min to obtain a mixture A;

and step S22, mixing the white carbon black and the mixture A, stirring for 20-30min to obtain a powdery mixture, and feeding the powdery mixture into an extruder for granulation to obtain a second component.

5. The rubber-plastic processing aid according to claim 4, wherein the antioxidant, the microcrystalline wax and the polyethylene wax are used in a mass ratio of 20-30 in step S21: 35: 20; in the step S22, the mass ratio of the white carbon black to the mixture A is 30: 10-20.

6. The rubber-plastic processing aid according to claim 4, wherein the antioxidant is prepared by the following steps:

step S31, adding 2-chlorothiaphenazine into toluene, dropwise adding 3-chloroacetyl chloride at 0 ℃ and at the rotation speed of 120r/min, heating and refluxing for 18h after dropwise adding, transferring the obtained reaction solution into a rotary evaporator, carrying out reduced pressure concentration to remove the solvent toluene, and then carrying out recrystallization by using absolute ethyl alcohol to obtain an intermediate 2;

7. The rubber-plastic processing aid according to claim 6, wherein the ratio of the amounts of 2-chlorothiaphenazine, toluene and 3-chloroacetyl chloride in step S31 is 2.4 g: 24mL of: 1.9-2 g; in the step S32, the dosage ratio of the intermediate 2, the p-toluidine, the N-heterocyclic carbene palladium catalyst and the 1, 4-dioxane is 0.9-1 g: 0.6 g: 0.01 g: 10 mL.

8. The method for preparing a rubber and plastic processing aid according to claim 1, comprising the following steps:

firstly, weighing raw materials in parts by weight;

secondly, adding stearic acid into a reaction kettle, heating to the temperature of 125-;

Technical Field

The invention belongs to the technical field of high polymer materials, and particularly relates to a rubber and plastic processing aid and a preparation method thereof.

Background

The rubber and plastic are the general names of rubber and plastic industries, and the plastic and the rubber belong to high molecular materials, mainly comprise two atoms of carbon and hydrogen, and other some contain a small amount of atoms of oxygen, nitrogen, chlorine, silicon, fluorine, sulfur and the like, and have special performance and special application. At normal temperature, the plastic is solid and hard and cannot be stretched and deformed. The rubber has low hardness, elasticity and can be stretched and lengthened, and the rubber can recover to the original shape after being stretched.

In the long-term storage and use process of rubber products, when the rubber products are subjected to heat, ozone, mechanical stress, light irradiation and the corrosion action of chemical substances, the phenomena of cracking, stickiness, hardening, brittleness and the like gradually occur, the rubber aging is caused to influence the service life of the products, and therefore, the prior art is to add adhesive, antioxidant and the like into raw materials for preparing rubber products such as rubber tires and the like so as to improve the anti-aging performance of the rubber.

Disclosure of Invention

The invention provides a rubber and plastic processing aid and a preparation method thereof.

The technical problems to be solved by the invention are as follows:

during long-term storage and use, when the rubber product is subjected to heat, ozone, mechanical stress, light and corrosion of chemical substances, phenomena such as cracking, stickiness, hardening and brittleness gradually occur, and the problems tend to cause rubber aging and influence the service life of the product.

The purpose of the invention can be realized by the following technical scheme:

the rubber and plastic processing aid comprises the following raw materials in parts by weight:

300 parts of stearic acid, 20-40 parts of anhydrous aluminum trichloride, 6-10 parts of zinc oxide, 20-30 parts of zinc oleate, 40-50 parts of a first component and 36-40 parts of a second component;

the rubber and plastic processing aid is prepared by the following steps:

firstly, weighing raw materials in parts by weight;

secondly, adding stearic acid into a reaction kettle, heating to the temperature of 125-;

Compared with the powdery rubber additive, the rubber additive is directly processed into particles, so that the waste caused by the flying of dust can be effectively avoided in the specific processing and using processes, the pollution to the working environment is reduced, and the health of operators is further ensured.

Further, the first component is prepared by the following steps:

step S12, mixing and dissolving the intermediate 1, n-propanol and deionized water to obtain a mixed solution a for later use, adding hydrofluoric acid and zirconium oxychloride into a plastic beaker filled with deionized water, starting stirring under the condition that the rotating speed is 200r/min, then dropwise adding the mixed solution a by using a constant-pressure dropping funnel, after dropwise adding, drying the obtained reaction solution at 80 ℃ for 48 hours, precipitating crystals, then carrying out vacuum filtration, washing the obtained filter cake with distilled water, and drying at 100 ℃ to constant weight after washing to obtain a solid b;

step S13, adding propyl tri (dioctyl pyrophosphato acyloxy) titanate into acetone, adding 80% by mass of ethanol aqueous solution, wherein the addition amount of the ethanol aqueous solution is 18-20 times of the volume of the acetone, uniformly mixing, performing ultrasonic treatment at room temperature for 5min, then adding the solid b at the temperature of 68 ℃, stirring for 3-4h at the rotation speed of 150r/min, after stirring, performing reduced pressure suction filtration on the obtained reaction solution to retain a filter cake, and performing vacuum drying on the obtained filter cake at 40 ℃ to constant weight to obtain the first component. Piperazine, phosphorous acid and formaldehyde are subjected to Mannich reaction to prepare an intermediate 1, the intermediate 1 is organic phosphonic acid, then a solid b is synthesized by a fluorine coordination method, the solid b is organic zirconium phosphonate with a layered structure, the layered structure has good thermal stability, the solid b cannot be in full contact with a substrate to play a role of carbon formation catalysis, the layered structure of the solid b also contains a large amount of hydroxyl, the hydroxyl on the solid b reacts with propyl tri (dioctyl pyrophosphato) titanate to form a chemical bond, and the part forming the chemical bond can be chemically crosslinked and physically wound with polymer molecules, so that the first component and the rubber-plastic material are closely and organically combined together, the dispersibility of the first component is ensured, and the mechanical property of a finished product is not influenced.

Further, in the step S11, the mass fraction of the concentrated hydrochloric acid is 38%, and the usage ratio of the deionized water, the concentrated hydrochloric acid, the piperazine, the phosphorous acid and the formaldehyde is 75 mL: 20mL of: 0.1 mol: 0.2 mol: 0.4 mol; the dosage ratio of the n-propanol, the intermediate 1 and the deionized water in the step S12 is 100 mL: 17-18 g: 6 mL; the dosage ratio of the hydrofluoric acid, the zirconium oxychloride, the deionized water and the mixed liquid a is 15 g: 16g of: 200mL of: 100-; in the step S13, the mass ratio of the propyl tri (dioctyl pyrophosphato acyloxy) titanate to the acetone to the solid b is 1: 6-7: 1.

further, the second component is prepared by the following steps:

Further, in the step S21, the mass ratio of the antioxidant to the microcrystalline wax to the polyethylene wax is 20-30: 35: 20; in the step S22, the mass ratio of the white carbon black to the mixture A is 30: 10-20.

Further, the antioxidant is prepared by the following steps:

and step S32, adding the intermediate 2, p-toluidine, an N-heterocyclic carbene-palladium catalyst and 1, 4-dioxane into a reaction kettle, heating and reacting for 4 hours under the protection of nitrogen at the set temperature of 110 ℃, quenching with distilled water after the reaction is finished, extracting for three times with dichloromethane, combining organic phases, and concentrating under reduced pressure at the temperature of 30 ℃ by using a rotary evaporator to obtain a white solid, namely the antioxidant. 3-chloroacetyl chloride reacts with 2-chlorothiaphenazine to obtain an N substituent intermediate 2, chlorine on the intermediate 2 reacts with amine in p-toluidine to obtain an antioxidant, the compound structure of the phenothiazine and diphenylamine in the antioxidant has a synergistic antioxidation effect, the rigid structure of the phenothiazine has excellent high temperature resistance, and the antioxidant is mixed with a microcrystalline wax and other adhesives to have good compatibility with rubber and plastic, so that the antioxidant can be used for preparing rubber and plastic materials with good aging resistance and heat resistance.

Further, in step S31, the ratio of the amounts of 2-chlorothiaphenazine, toluene and 3-chloroacetyl chloride is 2.4 g: 24mL of: 1.9-2 g; in the step S32, the dosage ratio of the intermediate 2, the p-toluidine, the N-heterocyclic carbene palladium catalyst and the 1, 4-dioxane is 0.9-1 g: 0.6 g: 0.01 g: 10 mL.

A preparation method of a rubber and plastic processing aid comprises the following steps:

firstly, weighing raw materials in parts by weight;

secondly, adding stearic acid into a reaction kettle, heating to the temperature of 125-;

The invention has the beneficial effects that:

compared with the powdery rubber additive, the rubber additive is directly processed into particles, so that the waste caused by the flying of dust can be effectively avoided in the specific processing and using processes, the pollution to the working environment is reduced, and the health of operators is further ensured.

Piperazine, phosphorous acid and formaldehyde are subjected to Mannich reaction to prepare an intermediate 1, the intermediate 1 is organic phosphonic acid, then a solid b is synthesized by a fluorine coordination method, the solid b is organic zirconium phosphonate with a layered structure, the layered structure has good thermal stability, the solid b cannot be in full contact with a substrate to play a role of carbon formation catalysis, the layered structure of the solid b also contains a large amount of hydroxyl, the hydroxyl on the solid b reacts with propyl tri (dioctyl pyrophosphato) titanate to form a chemical bond, and the part forming the chemical bond can be chemically crosslinked and physically wound with polymer molecules, so that the first component and the rubber-plastic material are closely and organically combined together, the dispersibility of the first component is ensured, and the mechanical property of a finished product is not influenced.

3-chloroacetyl chloride reacts with 2-chlorothiaphenazine to obtain an N substituent intermediate 2, chlorine on the intermediate 2 reacts with amine in p-toluidine to obtain an antioxidant, the compound structure of the phenothiazine and diphenylamine in the antioxidant has a synergistic antioxidation effect, the rigid structure of the phenothiazine has excellent high temperature resistance, and the antioxidant is mixed with a microcrystalline wax and other adhesives to have good compatibility with rubber and plastic, so that the antioxidant can be used for preparing rubber and plastic materials with good aging resistance and heat resistance.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious 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.

Example 1

The rubber and plastic processing aid comprises the following raw materials in parts by weight:

200 parts of stearic acid, 20 parts of anhydrous aluminum trichloride, 6 parts of zinc oxide, 20 parts of zinc oleate, 40 parts of a first component and 36 parts of a second component;

the rubber and plastic processing aid is prepared by the following steps:

firstly, weighing raw materials in parts by weight;

secondly, adding stearic acid into a reaction kettle, heating to 125 ℃, then adding anhydrous aluminum trichloride, keeping the temperature unchanged, reacting for 2 hours, then adding zinc oxide, and keeping the temperature unchanged, reacting for 1.5 hours;

thirdly, adding zinc oleate, the first component and the second component into a reaction kettle, uniformly mixing, and reacting for 35min at the temperature of 120 ℃ to obtain a mixed material; and (3) feeding the mixed material into a granulation extruder for granulation to obtain the rubber and plastic processing aid.

Wherein the first component is prepared by the following steps:

step S12, mixing and dissolving the intermediate 1, n-propanol and deionized water to obtain a mixed solution a for later use, adding hydrofluoric acid and zirconium oxychloride into a plastic beaker filled with deionized water, starting stirring under the condition that the rotating speed is 200r/min, then dropwise adding the mixed solution a by using a constant-pressure dropping funnel, after dropwise adding, drying the obtained reaction solution at 80 ℃ for 48 hours, precipitating crystals, then carrying out vacuum filtration, washing the obtained filter cake with distilled water, and drying at 100 ℃ to constant weight after washing to obtain a solid b;

Wherein, in the step S11, the mass fraction of the concentrated hydrochloric acid is 38%, and the usage ratio of the deionized water, the concentrated hydrochloric acid, the piperazine, the phosphorous acid and the formaldehyde is 75 mL: 20mL of: 0.1 mol: 0.2 mol: 0.4 mol; the dosage ratio of the n-propanol, the intermediate 1 and the deionized water in the step S12 is 100 mL: 17 g: 6 mL; the dosage ratio of the hydrofluoric acid, the zirconium oxychloride, the deionized water and the mixed liquid a is 15 g: 16g of: 200mL of: 100 mL; in the step S13, the mass ratio of the propyl tri (dioctyl pyrophosphato acyloxy) titanate to the acetone to the solid b is 1: 6: 1.

wherein the second component is prepared by the following steps:

step S21, adding an antioxidant into a reaction kettle, setting the temperature to be 110 ℃, then adding microcrystalline wax and polyethylene wax, and stirring for 20min to obtain a mixture A;

and step S22, mixing the white carbon black and the mixture A, stirring for 20min to obtain a powdery mixture, and feeding the powdery mixture into an extruder for granulation to obtain the second component.

Wherein, in the step S21, the mass ratio of the antioxidant to the microcrystalline wax to the polyethylene wax is 20: 35: 20; in the step S22, the mass ratio of the white carbon black to the mixture A is 30: 10.

wherein, the antioxidant is prepared by the following steps:

Wherein the dosage ratio of the 2-chlorothiaphenazine to the toluene to the 3-chloroacetyl chloride in the step S31 is 2.4 g: 24mL of: 1.9 g; in the step S32, the dosage ratio of the intermediate 2, the p-toluidine, the N-heterocyclic carbene palladium catalyst and the 1, 4-dioxane is 0.9 g: 0.6 g: 0.01 g: 10 mL.

Example 2

The rubber and plastic processing aid comprises the following raw materials in parts by weight:

250 parts of stearic acid, 30 parts of anhydrous aluminum trichloride, 8 parts of zinc oxide, 25 parts of zinc oleate, 45 parts of a first component and 38 parts of a second component;

the rubber and plastic processing aid is prepared by the following steps:

firstly, weighing raw materials in parts by weight;

secondly, adding stearic acid into a reaction kettle, heating to 140 ℃, then adding anhydrous aluminum trichloride, keeping the temperature unchanged, reacting for 2.5 hours, then adding zinc oxide, and keeping the temperature unchanged, reacting for 1.8 hours;

thirdly, adding zinc oleate, the first component and the second component into a reaction kettle, uniformly mixing, and reacting for 40min at the temperature of 120 ℃ to obtain a mixed material; and (3) feeding the mixed material into a granulation extruder for granulation to obtain the rubber and plastic processing aid.

Wherein the first component is prepared by the following steps:

step S12, mixing and dissolving the intermediate 1, n-propanol and deionized water to obtain a mixed solution a for later use, adding hydrofluoric acid and zirconium oxychloride into a plastic beaker filled with deionized water, starting stirring under the condition that the rotating speed is 200r/min, then dropwise adding the mixed solution a by using a constant-pressure dropping funnel, after dropwise adding, drying the obtained reaction solution at 80 ℃ for 48 hours, precipitating crystals, then carrying out vacuum filtration, washing the obtained filter cake with distilled water, and drying at 100 ℃ to constant weight after washing to obtain a solid b;

Wherein, in the step S11, the mass fraction of the concentrated hydrochloric acid is 38%, and the usage ratio of the deionized water, the concentrated hydrochloric acid, the piperazine, the phosphorous acid and the formaldehyde is 75 mL: 20mL of: 0.1 mol: 0.2 mol: 0.4 mol; the dosage ratio of the n-propanol, the intermediate 1 and the deionized water in the step S12 is 100 mL: 17.5 g: 6 mL; the dosage ratio of the hydrofluoric acid, the zirconium oxychloride, the deionized water and the mixed liquid a is 15 g: 16g of: 200mL of: 105 mL; in the step S13, the mass ratio of the propyl tri (dioctyl pyrophosphato acyloxy) titanate to the acetone to the solid b is 1: 6.5: 1.

wherein the second component is prepared by the following steps:

and step S22, mixing the white carbon black and the mixture A, stirring for 25min to obtain a powdery mixture, and feeding the powdery mixture into an extruder for granulation to obtain the second component.

Wherein, in the step S21, the mass ratio of the antioxidant to the microcrystalline wax to the polyethylene wax is 25: 35: 20; in the step S22, the mass ratio of the white carbon black to the mixture A is 30: 15.

wherein, the antioxidant is prepared by the following steps:

Example 3

The rubber and plastic processing aid comprises the following raw materials in parts by weight:

300 parts of stearic acid, 40 parts of anhydrous aluminum trichloride, 10 parts of zinc oxide, 30 parts of zinc oleate, 50 parts of a first component and 40 parts of a second component;

the rubber and plastic processing aid is prepared by the following steps:

firstly, weighing raw materials in parts by weight;

secondly, adding stearic acid into a reaction kettle, heating to 155 ℃, then adding anhydrous aluminum trichloride, keeping the temperature unchanged, reacting for 3 hours, then adding zinc oxide, and keeping the temperature unchanged, reacting for 5 hours;

thirdly, adding zinc oleate, the first component and the second component into a reaction kettle, uniformly mixing, and reacting for 45min at the temperature of 120 ℃ to obtain a mixed material; and (3) feeding the mixed material into a granulation extruder for granulation to obtain the rubber and plastic processing aid.

Wherein the first component is prepared by the following steps:

step S12, mixing and dissolving the intermediate 1, n-propanol and deionized water to obtain a mixed solution a for later use, adding hydrofluoric acid and zirconium oxychloride into a plastic beaker filled with deionized water, starting stirring under the condition that the rotating speed is 200r/min, then dropwise adding the mixed solution a by using a constant-pressure dropping funnel, after dropwise adding, drying the obtained reaction solution at 80 ℃ for 48 hours, precipitating crystals, then carrying out vacuum filtration, washing the obtained filter cake with distilled water, and drying at 100 ℃ to constant weight after washing to obtain a solid b;

Wherein, in the step S11, the mass fraction of the concentrated hydrochloric acid is 38%, and the usage ratio of the deionized water, the concentrated hydrochloric acid, the piperazine, the phosphorous acid and the formaldehyde is 75 mL: 20mL of: 0.1 mol: 0.2 mol: 0.4 mol; the dosage ratio of the n-propanol, the intermediate 1 and the deionized water in the step S12 is 100 mL: 18 g: 6 mL; the dosage ratio of the hydrofluoric acid, the zirconium oxychloride, the deionized water and the mixed liquid a is 15 g: 16g of: 200mL of: 110 mL; in the step S13, the mass ratio of the propyl tri (dioctyl pyrophosphato acyloxy) titanate to the acetone to the solid b is 1: 7: 1.

wherein the second component is prepared by the following steps:

step S21, adding an antioxidant into a reaction kettle, setting the temperature to be 160 ℃, then adding microcrystalline wax and polyethylene wax, and stirring for 40min to obtain a mixture A;

and step S22, mixing the white carbon black and the mixture A, stirring for 30min to obtain a powdery mixture, and feeding the powdery mixture into an extruder for granulation to obtain the second component.

Wherein, in the step S21, the mass ratio of the antioxidant to the microcrystalline wax to the polyethylene wax is 30: 35: 20; in the step S22, the mass ratio of the white carbon black to the mixture A is 30: 20.

wherein, the antioxidant is prepared by the following steps:

Wherein the dosage ratio of the 2-chlorothiaphenazine to the toluene to the 3-chloroacetyl chloride in the step S31 is 2.4 g: 24mL of: 2g of the total weight of the mixture; in the step S32, the dosage ratio of the intermediate 2, the p-toluidine, the N-heterocyclic carbene palladium catalyst and the 1, 4-dioxane is 1 g: 0.6 g: 0.01 g: 10 mL.

Comparative example 1

The first component and the second component in example 1 were not added, and the remaining raw materials and preparation process remained the same.

The application tests were carried out on the adjuvants obtained in example 1 and comparative example 1;

weighing the following raw materials in parts by weight: raw rubber 50 of natural rubber, raw rubber 50 of butadiene rubber, an auxiliary agent 10, petroleum resin 4.0, N330 carbon black 40, N660 carbon black 15, pottery clay 20, aromatic oil 7.0, an accelerant N0BS of 0.8 and sulfur of 1.7; vulcanizing and mixing the raw materials at 151 ℃ for 30min to obtain rubber batch, and obtaining three groups of rubber batch, wherein the auxiliary agent is the auxiliary agent prepared in the embodiment 1-3;

weighing the following raw materials in parts by weight: 50 parts of crude rubber of natural rubber, 50 parts of crude rubber of butadiene rubber, 1.5 parts of an anti-aging agent, 10 parts of an auxiliary agent, 4.0 parts of petroleum resin, 40 parts of N330 carbon black, 15 parts of N660 carbon black, 20 parts of pottery clay, 7.0 parts of aromatic oil, 0.8 part of an accelerator N0BS and 1.7 parts of sulfur; vulcanizing the raw materials at 151 ℃ for 30min, and mixing to obtain a rubber compound, wherein the auxiliary agent is the auxiliary agent prepared in the comparative example 1, and the anti-aging agent is a common rubber anti-aging agent on the market;

testing the four rubber batches, and measuring the oxygen index of a sample by using an HC-1 type oxygen index tester according to the national standard GB 5454-85;

the test results are shown in table 1 below:

TABLE 1

Performance of	Tensile strength MPa	Elongation at break%	Aging coefficient after 70h at 100 DEG C	Oxygen index
					Example 1	20.3	503.2	51.24	35
Example 2	19.8	506.3	53.23	35
					Example 3	20.6	504.6	52.01	35
Comparative example 1	13.4	460.2	49.26	30

As can be seen from the above Table 1, the additive prepared by the invention has good compatibility with rubber, does not affect the mechanical properties of the material, and has excellent aging resistance and flame retardance.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.

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