阅读说明：本技术 一种耐磨耐寒抗冲击的织物芯输送带及其制造方法 (Wear-resistant cold-resistant impact-resistant fabric core conveying belt and manufacturing 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：本发明公开了一种耐磨耐寒抗冲击的织物芯输送带及其制造方法。本发明选择天然橡胶/丁苯橡胶/顺丁橡胶为主体材料,N234炭黑为补强剂,添加CMoSSi耐磨剂,通过优化配方和工艺,制备的耐磨耐寒抗冲击的橡胶复合材料作为织物芯输送带的覆盖层,输送胶带具有优异的耐磨性能和抗冲击性能,且在低温和冲击载荷条件下仍具有良好的力学性能和较长使用寿命,满足织物芯输送带在低温环境下的使用要求,工艺简单,易于制造。(The invention discloses a wear-resistant cold-resistant impact-resistant fabric core conveying belt and a manufacturing method thereof. The natural rubber/styrene butadiene rubber/butadiene rubber is selected as a main material, N234 carbon black is used as a reinforcing agent, a CMoSSI wear-resistant agent is added, the wear-resistant, cold-resistant and impact-resistant rubber composite material prepared by optimizing the formula and the process is used as a covering layer of the fabric core conveying belt, the conveying belt has excellent wear resistance and impact resistance, still has good mechanical property and long service life under the conditions of low temperature and impact load, meets the use requirement of the fabric core conveying belt in a low-temperature environment, and is simple in process and easy to manufacture.)

1. the utility model provides a wear-resisting cold-resistant fabric core conveyer belt that strikes of cold-resistant, includes fabric canvas skeleton layer, canvas rubberizing layer, upper covering glue film, lower covering glue film, its characterized in that upper covering glue film, lower covering glue film constitute by following component according to the weight ratio:

the anti-coking rubber comprises, by weight, NR20-30 parts of natural rubber, SBR 150020-30 parts of styrene butadiene rubber, BR 900050 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 a protective wax, 0.5-1 part of an anti-coking agent CTP, 50-60 parts of carbon black N23450, 4-6 parts of a CMoSSI wear-resistant agent, 4-6 parts of coumarone resin and 2-4 parts of aromatic oil.

2. The wear, cold, impact resistant fabric core conveyor belt of claim 1 wherein: the promoter is a combination of a promoter CZ and a promoter TMTD.

3. The wear, cold, impact resistant fabric core conveyor belt of claim 1 wherein: the anti-aging agent is a combination of an anti-aging agent RD and an anti-aging agent 4020.

4. The wear, cold, impact resistant fabric core conveyor belt of claim 1 wherein: the CMoSSI wear-resistant agent is a composition of graphite powder with the fineness of 1000 meshes, molybdenum disulfide with the fineness of 1000 meshes and a Si69 silane coupling agent, and the mass ratio of the three components is 75%/23%/2%.

5. The wear, cold, impact resistant fabric core conveyor belt of claim 1 wherein: the fabric canvas framework layer is formed by laminating a plurality of glued canvas layers, and the framework material can be selected from NN100-500 of nylon canvas or EP100-500 of polyester canvas.

6. The conveyor belt with fabric core according to claim 1, wherein the upper covering glue layer has a thickness of 3-8mm and the lower covering glue layer has a thickness of 1.5-4 mm.

7. The method for preparing the wear-resistant cold-resistant impact-resistant fabric core conveyor belt according to claim 1, characterized by comprising the following steps:

(1) preparing an upper covering layer sizing material and a lower covering layer sizing material:

the sizing materials of the upper and lower covering glue layers comprise the following components in percentage by weight:

20-30 parts of natural rubber NR, 150020-30 parts of styrene butadiene rubber SBR, 900050 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 a protective wax, 0.5-1 part of a scorch retarder CTP, 50-60 parts of carbon black N23450, 4-6 parts of a CMoSSI wear-resistant agent, 4-6 parts of coumarone resin and 2-4 parts of aromatic oil;

preparing the mixture into two-stage rubber compound with an upper rubber layer and a lower rubber layer:

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) preparing a CmoSSI wear-resistant agent:

putting graphite powder with the fineness of 1000 meshes and molybdenum disulfide with the fineness of 1000 meshes into a kneader, heating and stirring at the stirring speed of 350-400 r/min, heating to 40-60 ℃, spraying a Si69 silane coupling agent, continuously heating and stirring, and stirring at the temperature of 110-120 ℃ for 10-15 min to prepare the CMoSSI wear-resistant agent, wherein the mass ratio of the graphite powder/the molybdenum disulfide/the Si69 in the CMoSSI wear-resistant agent is 75%/23%/2%;

3) 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 40 r/min; firstly, plasticated natural rubber, styrene butadiene rubber and butadiene rubber are put into an internal mixer for mixing for 40-50 seconds, 50% of carbon black, CMoSSI wear-resistant agent and aromatic oil are put into the internal mixer for continuously mixing for 150-180 seconds, then zinc oxide, stearic acid, anti-aging agent, protective wax, 50% of carbon black and coumarone resin are put into the internal mixer for continuously mixing for 150-180 seconds, the rubber discharging temperature is 140-150 ℃, the mixture is taken out of a sheet and cooled, a section of mixed rubber with an upper rubber layer and a lower rubber layer is prepared, and the mixed rubber is used after being placed for 8 hours;

4) and (3) second-stage mixing:

the two-stage mixing uses an internal mixer, and the rotor speed of the internal mixer is 20 r/min; the first-stage rubber compound, sulfur, an accelerant and an anti-scorching agent are put into an internal mixer for mixing for 100-120 seconds, the rubber discharge temperature is 90-100 ℃, the rubber sheet is taken out and cooled, and the second-stage rubber compound with the upper and lower rubber layers is prepared and used after being placed for 8 hours;

(2) preparing a canvas rubberizing layer sizing material;

(3) rubberizing the canvas;

(4) rolling out the sheet;

(5) molding a strip blank;

(6) and (4) vulcanizing the flat plate.

Technical Field

The invention relates to the technical field of mining conveying belts, in particular to a wear-resistant cold-resistant impact-resistant fabric core conveying belt and a manufacturing method thereof.

Background

Conveying belts used in working places such as mines, ports and open pit coal mining are required to have the characteristics of high wear resistance, impact resistance, good low temperature resistance and the like due to severe working environment and large borne impact load. Particularly, in mines and open pit mines in northeast and northwest areas of China, the low temperature in a severe cold period is below-50 ℃, the fabric core conveying belt in the prior art can become hard and brittle after being used for a long time at the environmental temperature, the mechanical property is seriously reduced, the service life is short under the condition of impact load, and even the service performance is lost. In the prior art, the mechanical property of the conveying belt under the conditions of normal temperature and high temperature is improved more, but the research on how to improve the mechanical property and the service life of the conveying belt under the conditions of low temperature and impact load is less.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides a wear-resistant, cold-resistant and impact-resistant fabric core conveying belt which has excellent wear resistance and impact resistance, still has good mechanical properties and long service life under the conditions of low temperature and impact load, and meets the use requirements of fabric core conveying belts in working places such as mines, ports, open pit coal mining and the like.

The second purpose of the invention is to provide a preparation method of the conveyer belt, which has simple process and easy manufacture.

The purpose of the invention is realized by the following scheme:

the invention relates to a wear-resistant, cold-resistant and impact-resistant fabric core conveying belt, which comprises a fabric canvas framework layer, a canvas adhesive layer, an upper covering adhesive layer and a lower covering adhesive layer, and is characterized in that the upper covering adhesive layer and the lower covering adhesive layer consist of the following components in percentage by weight:

20-30 parts of Natural Rubber (NR), 20-30 parts of styrene butadiene rubber (SBR 1500), 50 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 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, 50-60 parts of carbon black (N234), 4-6 parts of a CMoSSI wear resistant agent, 4-6 parts of coumarone resin and 2-4 parts of aromatic oil.

The promoter is a combination of a promoter CZ and a promoter TMTD, and the anti-aging agent is a combination of an anti-aging agent RD and an anti-aging agent 4020.

The CMoSSI wear-resistant agent is a composition of graphite powder with the fineness of 1000 meshes, molybdenum disulfide with the fineness of 1000 meshes and a Si69 silane coupling agent, and the mass ratio of the three components is 75%/23%/2%.

The fabric canvas framework layer is formed by laminating a plurality of layers of rubberized canvas, and the framework material can be selected from nylon rubberized canvas (NN100-500) or polyester rubberized canvas (EP 100-500).

The thickness of the upper covering glue layer is 3-8mm, and the thickness of the lower covering glue layer is 1.5-4 mm.

The manufacturing method of the wear-resistant cold-resistant impact-resistant fabric core conveyer belt comprises the following steps:

(1) preparing an upper covering layer sizing material and a lower covering layer sizing material:

the sizing materials of the upper and lower covering glue layers comprise the following components in percentage by weight:

20-30 parts of Natural Rubber (NR), 20-30 parts of styrene-butadiene rubber (SBR 1500), 50 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 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, 50-60 parts of carbon black (N234), 4-6 parts of a CMoSSI wear-resistant agent, 4-6 parts of coumarone resin and 2-4 parts of aromatic oil;

preparing the mixture into two-stage rubber compound with an upper rubber layer and a lower rubber layer:

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) preparation of CmoSSI wear-resistant agent

Putting graphite powder with the fineness of 1000 meshes and molybdenum disulfide with the fineness of 1000 meshes into a kneader, heating and stirring at the stirring speed of 350-400 r/min, heating to 40-60 ℃, spraying a Si69 silane coupling agent, continuously heating and stirring, and stirring at the temperature of 110-120 ℃ for 10-15 min to prepare the CMoSSI wear-resistant agent, wherein the mass ratio of the graphite powder/the molybdenum disulfide/the Si69 in the CMoSSI wear-resistant agent is 75%/23%/2%;

3) one-stage mixing

The first mixing stage uses an internal mixer, and the rotating speed of the rotor of the internal mixer is 40 r/min. Firstly, plasticated natural rubber, styrene butadiene rubber and butadiene rubber are put into an internal mixer for mixing for 40-50 seconds, carbon black (50%), a CMoSSI wear-resistant agent and aromatic oil are put into the internal mixer for continuously mixing for 150-180 seconds, then zinc oxide, stearic acid, an anti-aging agent, protective wax, carbon black (50%) and coumarone resin are put into the internal mixer for continuously mixing for 150-180 seconds, the rubber discharging temperature is 140-150 ℃, the mixture is taken out of a sheet and cooled to prepare a section of mixed rubber with an upper rubber layer and a lower rubber layer, and the mixed rubber is used after being placed for 8 hours;

4) two stage mixing

The two-stage mixing was carried out using an internal mixer with a rotor speed of 20 rpm. The first-stage rubber compound, sulfur, an accelerant and an anti-scorching agent are put into an internal mixer for mixing for 100-120 seconds, the rubber discharge temperature is 90-100 ℃, the rubber sheet is taken out and cooled, and the second-stage rubber compound with the upper and lower rubber layers is prepared and used after being placed for 8 hours;

(2) preparing a canvas rubberizing layer sizing material:

the canvas rubberizing layer rubber material is used for a common fabric core conveying belt;

(3) rubberizing a canvas:

hot-pasting canvas rubberizing layers and rubber materials on the upper surface and the lower surface of the rubberized canvas according to the thickness required by the process by a cold feed extruder and a four-roller calender;

(4) rolling out a sheet:

preparing upper and lower cover layer rubber sheets from the upper and lower cover layer rubber materials according to the thickness required by the process by using a cold feed extruder and a four-roll calender;

(5) forming a strip blank:

firstly, adhering rubberized canvas together according to the number of layers required by the process by an automatic tension forming machine, and then adhering the rubberized canvas to upper and lower covering layer films to prepare a belt blank;

(6) plate vulcanization:

and vulcanizing the belt blank into a finished product through a flat vulcanizing machine according to the pressure, temperature and time required by the process, namely the wear-resistant cold-resistant impact-resistant fabric core conveying belt.

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

the natural rubber/styrene butadiene rubber/butadiene rubber is selected as a main material, N234 carbon black is used as a reinforcing agent, a CMoSSI wear-resistant agent is added, the wear-resistant, cold-resistant and impact-resistant rubber composite material prepared by optimizing the formula and the process is used as a covering layer of the fabric core conveying belt, the conveying belt has excellent wear resistance and impact resistance, still has good mechanical property and long service life under the conditions of low temperature and impact load, meets the use requirement of the fabric core conveying belt in a low-temperature environment, and is simple in process and easy to 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.