阅读说明：本技术 一种节能耐磨低烟无卤阻燃橡胶复合材料及其制备方法 (Energy-saving wear-resistant low-smoke halogen-free flame-retardant rubber composite material and preparation method thereof ) 是由 宋鑫 宋长江 王巍 魏雪梅 李朝红 周震宇 汪健 袁陆海 于 2019-11-16 设计创作，主要内容包括：本发明公开了一种节能耐磨的低烟无卤阻燃橡胶复合材料及其制备方法。选用锡偶联型溶聚丁苯橡胶/天然橡胶/顺丁橡胶为主体材料,低滚动阻力炭黑和高分散白炭黑为补强剂,添加无卤阻燃阻燃剂和增塑剂,通过优化配方和工艺,制备节能耐磨低烟无卤阻燃橡胶复合材料,具有优异的耐磨性能和抗冲击性能,且阻燃性能好,滚动阻力低,节能环保,用于制造汽车轮胎、橡胶输送带、磨机橡胶衬里等橡胶制品,可提高使用寿命,减少运行阻力,降低能源消耗。同时,本发明工艺简单,易于制造。(The invention discloses an energy-saving wear-resistant low-smoke halogen-free flame-retardant rubber composite material and a preparation method thereof. The energy-saving wear-resistant low-smoke halogen-free flame-retardant rubber composite material is prepared by selecting tin-coupled solution-polymerized styrene-butadiene rubber/natural rubber/butadiene rubber as a main material, low-rolling-resistance carbon black and high-dispersion white carbon black as reinforcing agents, adding a halogen-free flame-retardant fire retardant and a plasticizer, and optimizing a formula and a process. Meanwhile, the invention has simple process and easy manufacture.)

1. an energy-saving wear-resistant low-smoke halogen-free flame-retardant rubber composite material is characterized by comprising the following components in percentage by weight:

the anti-corrosion flame-retardant coating comprises, by weight, SSBR-SL 55250 parts of tin coupling solution polymerized styrene-butadiene rubber, NR 20-30 parts of natural rubber, BR 900020-30 parts of butadiene rubber, 4-6 parts of zinc oxide, 1-3 parts of stearic acid, 1.5-2.0 parts of sulfur, 1.5-2.0 parts of an accelerator, 2-3 parts of an anti-aging agent, 1-2 parts of protective wax, 0.5-1 part of a scorch retarder CTP, 20-25 parts of low rolling resistance carbon black, 4 parts of conductive carbon black, 20-25 parts of high dispersion white carbon black, HS-5804-6 parts of a wear-resistant agent, AS-883 parts of a binder, 4-6 parts of C5 petroleum resin, 4-6 parts of aramid pulp, 4-4 parts of a silane coupling agent Si 692-4 parts, 10-16 parts of a halogen-free flame-retardant plasticizer and 60.

2. The energy-saving wear-resistant low-smoke halogen-free flame-retardant rubber composite material as claimed in claim 1, characterized in that: the promoter is a combination of a promoter CZ and a promoter TMTD.

3. The energy-saving wear-resistant low-smoke halogen-free flame-retardant rubber composite material as claimed in claim 1, characterized in that: the anti-aging agent is a combination of an anti-aging agent RD and an anti-aging agent 4020.

4. The energy-saving wear-resistant low-smoke halogen-free flame-retardant rubber composite material as claimed in claim 1, characterized in that: the low rolling resistance carbon black is selected from Degussa EB122, EB123 or cabot CRX ^TM1436.

5. The energy-saving wear-resistant low-smoke halogen-free flame-retardant rubber composite material as claimed in claim 1, characterized in that: the halogen-free flame retardant plasticizer can be any one of diphenyl isooctyl phosphate DPOP, tricresyl phosphate TCP and trioctyl phosphate TOP.

6. The energy-saving wear-resistant low-smoke halogen-free flame-retardant rubber composite material as claimed in claim 1, characterized in that: the halogen-free flame retardant is a combination of microcapsule red phosphorus, zinc borate, ammonium polyphosphate APP and melamine phosphate MPP.

7. The preparation method of the energy-saving wear-resistant low-smoke halogen-free flame-retardant rubber composite material as claimed in claim 1, characterized by comprising the following steps:

(1) plasticating natural rubber:

plasticating the natural rubber by using an internal mixer, wherein the rotor speed of the internal mixer is 40 r/min, the plasticating time is 180-;

(2) first-stage mixing:

an internal mixer is used for the first-stage mixing, and the rotating speed of a rotor of the internal mixer is 50 r/min; firstly, plasticated natural rubber, styrene butadiene rubber and butadiene rubber are put into an internal mixer to be mixed for 40-50 seconds, zinc oxide, an anti-aging agent, an anti-scorching agent, carbon black, conductive carbon black, stearic acid, protective wax, a wear-resisting agent, petroleum resin and a halogen-free flame retardant plasticizer are put into the internal mixer to be continuously mixed for 180 seconds, the rubber discharging temperature is 140-;

(3) modifying the flame retardant:

adding white carbon black, aramid fiber pulp and a halogen-free flame retardant into a kneader, heating and stirring at the stirring speed of 375-400 r/min to 40-60 ℃, spraying a silane coupling agent, continuing heating and stirring, stirring at the temperature of 115-125 ℃ for 10-15 min to prepare a surface modified flame retardant, and cooling for use;

(4) and (3) second-stage mixing:

adding the first-stage rubber compound and the surface modification fire retardant into an internal mixer for mixing, wherein the rotor speed of the internal mixer is 50 r/min, the mixing time is 150-;

(5) three-stage mixing:

the three-stage mixing uses an internal mixer, and the rotor speed of the internal mixer is 20 r/min; and (3) putting the two-stage rubber compound, sulfur, an accelerator and an adhesive into an internal mixer for mixing for 100-120 seconds, discharging the rubber at the temperature of 90-100 ℃, discharging the rubber sheet, and cooling to obtain the three-stage rubber compound, namely the energy-saving wear-resistant low-smoke halogen-free flame-retardant rubber composite material.

Technical Field

The invention relates to the technical field of rubber composite materials, in particular to an energy-saving wear-resistant low-smoke halogen-free flame-retardant rubber composite material and a preparation method thereof.

Background

Scientific research shows that about 40 percent of power consumption of rubber products such as automobile tires, rubber conveyor belts, mill rubber linings and the like accounts for more than 80 percent of the rubber consumption in the world, and the development of the energy-saving wear-resistant rubber composite material with low rolling resistance is of great significance for prolonging the service life of the rubber products such as the automobile tires, the rubber conveyor belts, the mill rubber linings and the like and reducing the energy consumption and the running cost in the use process. Generally, the rolling resistance of a rubber material is caused by the viscoelasticity of a working surface of the rubber material, a loss factor (tan delta value at 60 ℃) is an important parameter for representing the dynamic viscoelasticity of the material, and the tan delta (tan delta value at 60 ℃) is reduced, so that the hysteresis loss of the working surface of rubber products such as automobile tires, rubber conveyor belts, rubber linings of mills and the like can be reduced, the power consumption in the running process of the rubber products is correspondingly reduced, and the purpose of saving energy is achieved. The rolling resistance of a rubber material is expressed by its loss factor tan delta (value of tan delta at 60 ℃), and a rubber material having tan delta (value of tan delta at 60 ℃) of 0.15 or less is generally defined as a low rolling resistance or energy-saving rubber material.

Rubber is a flammable material, and is required to have flame retardant performance for rubber tires and other rubber products used in coal mine rubber products, rail transit rubber products and special places, and China and some countries in the world encourage the use of low-smoke low-halogen and low-smoke halogen-free environment-friendly rubber materials, so that the research on environment-friendly flame retardant rubber technology is an urgent requirement for the rubber industry.

At present, China has more researches on how to improve the mechanical property of rubber materials, and a great deal of researches on rubber flame-retardant technologies have been carried out, and a lot of technical achievements have been obtained, but the researches on energy-saving and environment-friendly flame-retardant technologies of rubber materials are less.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides an energy-saving wear-resistant low-smoke halogen-free flame-retardant rubber composite material which not only meets the mechanical properties of automobile rubber products, mine rubber products and rail transit rubber products, but also has excellent wear resistance and impact resistance, good flame retardance, low rolling resistance, energy conservation and environmental protection, is used for manufacturing rubber products such as automobile tires, rubber conveyor belts, rubber linings of mills and the like, and can prolong the service life, reduce the running resistance and reduce the energy consumption.

The second purpose of the invention is to provide a preparation method of the energy-saving wear-resistant low-smoke halogen-free flame-retardant rubber composite material, which has simple process and is easy to manufacture.

The object of the present invention is achieved by the following means.

The energy-saving wear-resistant low-smoke halogen-free flame-retardant rubber composite material comprises the following components in percentage by weight:

50 parts of tin coupling solution polymerized styrene-butadiene rubber (SSBR-SL 552), 20-30 parts of Natural Rubber (NR), 20-30 parts of butadiene rubber (BR 9000), 4-6 parts of zinc oxide, 1-3 parts of stearic acid, 1.5-2.0 parts of sulfur, 1.5-2.0 parts of accelerator, 2-3 parts of anti-aging agent, 1-2 parts of protective wax, 0.5-1 part of anti-scorching agent CTP, 20-25 parts of low rolling resistance carbon black, 4 parts of conductive carbon black, 20-25 parts of high dispersion white carbon black, 4-6 parts of wear-resisting agent (HS-580), 3 parts of adhesive (AS-88), 4-6 parts of C5 petroleum resin, 4-6 parts of aramid pulp, 2-4 parts of silane coupling agent (Si69), 10-16 parts of halogen-free flame retardant plasticizer and 60-70 parts of halogen-free flame retardant.

The promoter is a combination of a promoter CZ and a promoter TMTD, the anti-aging agent is a combination of an anti-aging agent RD and an anti-aging agent 4020, the halogen-free flame retardant plasticizer can be any one of diphenyl isooctyl phosphate (DPOP), tricresyl phosphate (TCP) and trioctyl phosphate (TOP), the halogen-free flame retardant is a combination of microcapsule red phosphorus, zinc borate, ammonium polyphosphate (APP) and melamine phosphate (MPP), and the low rolling resistance carbon black is Degussa EB122, EB123 or cabot CRX ^TM1436.

The preparation method of the energy-saving wear-resistant low-smoke halogen-free flame-retardant rubber composite material comprises the following steps:

(1) plasticating natural rubber:

plasticating the natural rubber by using an internal mixer, wherein the rotor speed of the internal mixer is 40 r/min, the plasticating time is 180-;

(2) first-stage mixing:

the first mixing stage uses an internal mixer, and the rotating speed of the rotor of the internal mixer is 50 r/min. Firstly, plasticated natural rubber, styrene butadiene rubber and butadiene rubber are put into an internal mixer to be mixed for 40-50 seconds, zinc oxide, an anti-aging agent, an anti-scorching agent, carbon black, conductive carbon black, stearic acid, protective wax, a wear-resisting agent, petroleum resin and a halogen-free flame retardant plasticizer are put into the internal mixer to be continuously mixed for 180 seconds, the rubber discharging temperature is 140-;

(3) modifying the flame retardant:

adding the white carbon black, the aramid fiber pulp and the halogen-free flame retardant into a kneader, heating and stirring at the stirring speed of 375 plus 400 rpm, heating to 40-60 ℃, spraying the silane coupling agent, continuing heating and stirring, stirring at the temperature of 115-125 ℃ for 10-15 minutes to prepare a surface modified flame retardant, and cooling for use;

(4) and (3) second-stage mixing:

adding the first-stage rubber compound and the surface modification fire retardant into an internal mixer for mixing, wherein the rotor speed of the internal mixer is 50 r/min, the mixing time is 150-;

(5) three-stage mixing:

and (3) using an internal mixer for three-stage mixing, wherein the rotor speed of the internal mixer is 20 r/min, the two-stage rubber compound, sulfur, an accelerant and an adhesive are put into the internal mixer for mixing for 100 plus 120 seconds, the rubber discharge temperature is 90-100 ℃, and the rubber compound is discharged and cooled to prepare the three-stage rubber compound which is used after being parked for 8 hours, thus obtaining the energy-saving wear-resistant low-smoke halogen-free flame retardant rubber composite material.

Compared with the prior art, the invention has the following beneficial effects:

1. the rubber has excellent wear resistance and impact resistance, is used for manufacturing automobile tires, industrial and mineral rubber products and rail transit rubber products, can absorb shock and resist wear, and prolongs the service life.

2. The flame-retardant rubber has excellent flame-retardant property, small smoke amount when ignited, and no halogen in smoke, can be used for manufacturing automobile rubber products, coal mine rubber products and rail transit rubber products to prevent combustion, and avoids secondary disasters such as life hazard, equipment corrosion, environment pollution and the like caused by ignition.

4. Has low rolling resistance, is used for manufacturing rubber products such as automobile tires, rubber conveyor belts, rubber linings of mills and the like, can reduce the running resistance and reduce the energy consumption.

5. Simple process and easy manufacture.

Detailed Description

The following examples are given to aid in the understanding of the invention, but are not intended to limit the scope of the invention.