阅读说明：本技术 一种耐磨阻燃输送带天然橡胶胶料及其制备方法 (Wear-resistant flame-retardant conveyor belt natural rubber material and preparation method thereof ) 是由 詹才福 井垒 周国荣 于 2019-09-27 设计创作，主要内容包括：本发明公开了一种耐磨阻燃输送带天然橡胶胶料,所述输送带天然橡胶胶料由以下重量百分比的组分构成：天然橡胶27.56～35.43％,顺丁橡胶3.86～12.05％,中超耐磨炭黑17.73～21.52％,环保阻燃剂13.78～17.72％,普通阻燃剂14.96～18.9％,防老剂2.95～3.74％,活性剂1.18～3.94％,硫化剂0.47～1.01％,促进剂0.39～0.87％,加工助剂0.39～1.97％。本发明具有高耐磨、阻燃性能好、拉伸强度高、耐曲挠疲劳、延伸率适当、加工性能好的特点,适用于挤出成型加工工艺,硫化制品使用寿命长。(The invention discloses a natural rubber material for a wear-resistant flame-retardant conveyor belt, which comprises the following components in percentage by weight: 27.56-35.43% of natural rubber, 3.86-12.05% of butadiene rubber, 17.73-21.52% of medium super wear-resistant carbon black, 13.78-17.72% of environment-friendly flame retardant, 14.96-18.9% of common flame retardant, 2.95-3.74% of anti-aging agent, 1.18-3.94% of active agent, 0.47-1.01% of vulcanizing agent, 0.39-0.87% of accelerator and 0.39-1.97% of processing aid. The invention has the characteristics of high wear resistance, good flame retardant property, high tensile strength, flex fatigue resistance, proper elongation and good processability, is suitable for an extrusion molding processing technology, and has long service life of vulcanized products.)

1. The wear-resistant flame-retardant conveyor belt natural rubber material is characterized by comprising the following components in percentage by weight:

2. the wear-resistant flame-retardant conveyor belt natural rubber compound as claimed in claim 1, which is composed of the following components in percentage by weight:

3. the wear-resistant flame-retardant conveyor belt natural rubber compound according to claim 1 or 2, wherein the environment-friendly flame retardant is decabromodiphenylethane.

4. The wear-resistant flame-retardant conveyor belt natural rubber compound of claim 1 or 2, wherein the butadiene rubber is BR 9000.

5. The wear-resistant flame-retardant conveyor belt natural rubber compound according to claim 1 or 2, characterized in that: the medium super wear-resistant carbon black is N234.

6. The natural rubber compound for a wear-resistant flame-retardant conveyor belt according to claim 5, wherein: the anti-aging agent is prepared by compounding a heat-resistant anti-aging agent, an ozone-resistant anti-aging agent and a flex crack-resistant anti-aging agent according to the optimal protection effect.

7. The preparation method of the natural rubber compound for the wear-resistant flame-retardant conveyor belt according to any one of claims 1 to 6, characterized by comprising the following steps:

(1) preparing materials: the formulation of claim 1, wherein the natural rubber and the butadiene rubber are separately weighted, and the medium and super wear-resistant carbon black and the processing aid are automatically weighted by an auxiliary machine on a rubber mixing system and are injected during mixing; the anti-aging agent and the activator are mixed together to form a mixture A; the environment-friendly flame retardant and the common flame retardant are mixed together to form a mixture B; compounding a vulcanizing agent and an accelerator together to form a compound C;

(2) first mixing: adding natural rubber, butadiene rubber, a material A and medium-super wear-resistant carbon black into an internal mixer, mixing for 70-110 seconds, then lifting a hammer for cleaning, adding a material B into the internal mixer, mixing for 40-80 seconds, then lifting the hammer for cleaning again, automatically injecting a processing aid for mixing for 30-70 seconds, mixing for 20-40 seconds again, discharging to a lower auxiliary machine for discharging, and preparing a mixed rubber A;

(3) and (3) second mixing: and (3) putting the rubber compound A and the ingredient C prepared by the first mixing into an internal mixer for mixing for 20-40 seconds, then continuously mixing for 20-40 seconds after cleaning, then discharging to a cutting machine for discharging, and thus completing the preparation.

Technical Field

The invention relates to rubber, in particular to a natural rubber sizing material for a wear-resistant flame-retardant conveying belt and a preparation method thereof.

Background

The rubber conveyer belt is a rubber product widely used in mines and docks, and has great market demand. With the continuous promotion of industrial automation and the annual rise of labor cost, the quality requirement of people on the rubber conveying belt is higher and higher. However, when the existing rubber material formula meets the performance requirements of the conveying belt, the physical and mechanical properties, particularly tensile strength and flame retardant properties of the rubber material formula cannot be well matched with the environmental protection requirements at the same time.

Disclosure of Invention

The invention aims to solve the problems and provides a natural rubber material for a wear-resistant flame-retardant conveyor belt and a method for preparing the natural rubber material.

In order to achieve the purpose, the invention provides the following technical scheme: the natural rubber material for the wear-resistant flame-retardant conveyor belt comprises the following components in percentage by weight:

the wear-resistant flame-retardant conveyor belt natural rubber material comprises the following components in percentage by weight:

the wear-resistant flame-retardant conveyor belt natural rubber material comprises the following components in percentage by weight:

wherein the environment-friendly flame retardant is decabromodiphenylethane.

Wherein the butadiene rubber is BR 9000.

Wherein the medium and super wear-resistant carbon black is N234.

Wherein the anti-aging agent is prepared by compounding a heat-resistant anti-aging agent, an ozone-resistant anti-aging agent and a flex crack-resistant anti-aging agent according to the optimal protection effect.

The invention also provides a preparation method of the natural rubber compound for the wear-resistant flame-retardant conveyor belt, which comprises the following steps:

(1) preparing materials: the formulation of claim 1, wherein the natural rubber and the butadiene rubber are separately weighted, and the medium and super wear-resistant carbon black and the processing aid are automatically weighted by an auxiliary machine on a rubber mixing system and are injected during mixing; the anti-aging agent and the activator are mixed together to form a mixture A; the environment-friendly flame retardant and the common flame retardant are mixed together to form a mixture B; compounding a vulcanizing agent and an accelerator together to form a compound C;

(2) first mixing: adding natural rubber, butadiene rubber, a material A and medium-super wear-resistant carbon black into an internal mixer, mixing for 70-110 seconds, then lifting a hammer for cleaning, adding a material B into the internal mixer, mixing for 40-80 seconds, then lifting the hammer for cleaning again, automatically injecting a processing aid for mixing for 30-70 seconds, mixing for 20-40 seconds again, discharging to a lower auxiliary machine for discharging, and preparing a mixed rubber A;

(3) and (3) second mixing: and (3) putting the rubber compound A and the ingredient C prepared by the first mixing into an internal mixer for mixing for 20-40 seconds, then continuously mixing for 20-40 seconds after cleaning, then discharging to a cutting machine for discharging, and thus completing the preparation.

In the step (3), the rubber compound A and the ingredient C are put into an internal mixer for mixing.

According to the invention, natural rubber is selected as a main material of the formula of the rubber material and is combined with the butadiene rubber, so that the vulcanized rubber material product has high tensile strength and wear resistance, and the material cost is relatively low; the super wear-resistant carbon black in the formula is beneficial to improving the physical and mechanical properties, particularly the wear resistance, of the rubber material, and simultaneously can keep the better processing property of the rubber material; and the reasonable combination of the environment-friendly flame retardant and other common flame retardants enables the oxygen index of the rubber material to reach more than 30, and meets the environment-friendly requirement of no harm to human bodies.

Compared with the prior art, the invention has the characteristics of high tensile strength, high flame retardance, ozone aging resistance, flex fatigue resistance and good processability, and is suitable for an extrusion molding processing technology.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.