CN114539682A - Chlorine-zinc flame-retardant high-temperature-resistant conveying belt and preparation method thereof - Google Patents

Abstract

The invention relates to the technical field of conveyor belt preparation, and particularly provides a chlorine-zinc flame-retardant high-temperature-resistant conveyor belt and a preparation method thereof, wherein the conveyor belt comprises a cover film and a core film, and the cover film is prepared from the following components in parts by weight: 30-70 parts of ethylene propylene diene monomer, 30-70 parts of chloroprene rubber, 3-10 parts of an active agent, 3-8 parts of a high-temperature anti-aging agent, 10-30 parts of a chlorine-zinc composite flame retardant, 50-80 parts of an anti-stretching wear reinforcing agent, 15-30 parts of an anti-tearing reinforcing agent, 15-30 parts of a high-temperature resistant flexibilizer, 3-10 parts of a crosslinking agent and 2-8 parts of a crosslinking assistant; compared with the preparation material of the cover rubber piece, the preparation material of the core rubber piece also comprises 2-10 parts of tackifier. The transmission belt prepared by the formula and the method has the advantages of good flame retardant property, high temperature resistance and long service life.

Description

A kind of chlorine zinc flame retardant and high temperature resistant conveyor belt and preparation method thereof

technical field

The invention relates to the technical field of conveyor belt preparation, and particularly provides a chlorine-zinc flame retardant and high temperature resistant conveyor belt and a preparation method.

Background technique

With the efficient operation of mechanization for the delivery of raw materials and finished products in coal mining or cement manufacturing, friction increases, and the temperature of the coal or cement powder product itself typically reaches 150°C or more. The intensive production process requires a smaller floor area, a high degree of three-dimensional mining and transportation, a large inclination angle of the wellhead for lifting and transportation, and a lifting belt with higher strength and toughness. Therefore, the high temperature resistant and flame retardant steel wire rope conveyor belt is the standard for this kind of industry. However, at present, there are the following problems in industrial applications:

1) The aging performance of high temperature resistance (180 ° C) is poor, and the dynamic performance is progressive cracking, which eventually loses its performance;

2) The flame retardant performance is not up to standard, although no substantial fire is caused, but there are potential safety hazards.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the present invention provides a zinc chloride flame retardant and high temperature resistant conveyor belt and a preparation method.

The present invention is realized in this way, and provides a kind of chlorine-zinc flame retardant and high temperature resistant conveyor belt, which includes a cover film and a core film, and the preparation materials of the cover film, in parts by weight, include the following components: 30-70 parts of neoprene rubber, 3-10 parts of active agent, 3-8 parts of high temperature antioxidant, 10-30 parts of chlorine-zinc composite flame retardant, 50-80 parts of anti-tensile wear reinforcement, anti-tear reinforcement 15-30 parts of strength agent, 15-30 parts of high temperature and flexibility agent, 3-10 parts of cross-linking agent, 2-8 parts of cross-linking auxiliary;

Compared with the preparation material of the cover film, the preparation material of the core film also includes 2-10 parts of a tackifier.

Preferably, the active agent is one or both of zinc oxide and stearic acid, the high temperature antioxidant is one or both of NBC and RD, and the chloride-zinc composite flame retardant is chlorinated Zinc and chlorinated paraffin are mixed in a ratio of 4:5, the tensile wear-resistant reinforcing agent is medium and ultra-resistant carbon black, the tear-resistant reinforcing agent is precipitated silica, and the high temperature and temperature-resistant flexibility agent is It is aromatic hydrocarbon oil, the cross-linking agent is one or more of morpholine disulfide, dicumyl peroxide, and sulfur, and the cross-linking aid is benzothiazole disulfide; the tackifier is Cobalt salt binder.

The present invention also provides a preparation method of the above-mentioned chlorine zinc flame retardant and high temperature resistant conveyor belt, comprising the following steps:

1) Cover film preparation:

101) prepare the ingredients of the cover film according to the above-mentioned formula;

102) mixing of cover rubber;

103) calendering heat refining;

104) cover film calendering;

2) Core film preparation:

201) prepare the ingredients of the core film according to the above-mentioned formula;

202) core rubber mixing;

203) calendering heat refining, mesh cloth glue;

204) core film calendering;

3) The cover film and the core film are stacked and compounded according to the size of the corners to form a rubber blank;

4) Steel wire rope pretreatment;

5) Utilize the rubber blank prepared in step 3) and the steel wire rope prepared in step 4) to form and inspect the conveyor belt;

6) Vulcanization;

7) Inspection and inspection, packaging and storage.

Preferably, in the step 101) and the step 201), when preparing the chlorine-zinc composite flame retardant, the zinc chloride and the chlorinated paraffin are respectively ground to 60 mesh, and mixed evenly to form the chlorine-zinc composite flame retardant agent.

Compared with the prior art, the advantages of the present invention are:

1. Use rubber elastomer with high saturation, high temperature resistance and ozone aging resistance as the main material;

2. Use the rubber with its own flame-retardant elements with good self-adhesive mutual adhesion, good weather resistance, flame resistance, oil resistance and chemical corrosion resistance together with the main material, giving the main material good performance and processing performance;

3. Add fine-grained zinc chloride material as a flame retardant, and at the same time increase the adhesion fastness to the steel wire rope.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

Embodiment 1,

To prepare a kind of chlorine-zinc flame retardant and high temperature resistant conveyor belt, the preparation materials of the cover film include the following components in parts by weight:

The preparation materials of the core film, in parts by weight, include the following components:

According to the above formula, a preparation method for preparing a chlorine-zinc flame retardant and high temperature resistant conveyor belt comprises the following steps:

1) Cover film preparation:

101) prepare the ingredients of the cover film according to the above formula;

102) mixing of cover rubber;

103) calendering heat refining;

104) cover film calendering;

2) Core film preparation:

201) prepare the ingredients of the core film according to the above formula;

202) core rubber mixing;

203) calendering heat refining, mesh cloth glue;

204) core film calendering;

3) The cover film and the core film are stacked and compounded according to the size of the corners to form a rubber blank;

4) Steel wire rope pretreatment;

5) Utilize the rubber blank prepared in step 3) and the steel wire rope prepared in step 4) to form and inspect the conveyor belt;

6) Vulcanization;

7) Inspection and inspection, packaging and storage.

In the step 101) and the step 201), when preparing the chloride-zinc composite flame retardant, the zinc chloride and the chlorinated paraffin are respectively ground to 60 mesh, and mixed evenly to form the chloride-zinc composite flame retardant.

Embodiment 2,

To prepare a kind of chlorine-zinc flame retardant and high temperature resistant conveyor belt, the preparation materials of the cover film include the following components according to parts by weight:

serial number Material name parts by weight 1 EPDM rubber 70 2 Neoprene 30 3 Stearic acid 2 4 Zinc oxide 5 5 Anti-aging NBC 2 6 Anti-aging agent RD 1.5 7 Zinc chloride 8 8 Chlorinated Paraffin 10 9 Carbon Black N 330 40 10 Carbon Black N 660 30 11 Precipitated silica 18 12 Aromatic oil 15 13 benzothiazole disulfide 2 14 sulfur 1.2 16 Dicumyl peroxide 1.8

The preparation materials of the core film, in parts by weight, include the following components:

The preparation method is the same as in Example 1.

Embodiment 3,

To prepare a kind of chloride zinc flame retardant and high temperature resistant conveyor belt, the preparation materials of the cover film include the following components by weight:

The preparation materials of the core film, in parts by weight, include the following components:

serial number Material name parts by weight 1 EPDM 40 2 Neoprene 60 3 Stearic acid 2 4 Zinc oxide 6 5 Anti-aging NBC 2 6 Anti-aging agent RD 1.5 7 cobalt salt binder 3 8 Zinc chloride 8 9 Chlorinated Paraffin 10 10 Carbon Black N 330 50 11 Carbon Black N 660 30 12 Precipitated silica 18 13 Aromatic oil 15 14 benzothiazole disulfide 2 15 sulfur 3.5

The preparation method is the same as in Example 1.

The performance of the conveyor belt prepared in Example 1 was detected, and the results were as follows:

The embodiments of the present invention have been described in detail above in conjunction with the examples, but the present invention is not limited to the above-mentioned embodiments. Within the knowledge scope possessed by those of ordinary skill in the art, various aspects can be made without departing from the purpose of the present invention. kind of change.

Claims (4)

1. The chlorine-zinc flame-retardant high-temperature-resistant conveying belt is characterized by comprising a cover film and a core film, wherein the cover film is prepared from the following components in parts by weight: 30-70 parts of ethylene propylene diene monomer, 30-70 parts of chloroprene rubber, 3-10 parts of an active agent, 3-8 parts of a high-temperature anti-aging agent, 10-30 parts of a chlorine-zinc composite flame retardant, 50-80 parts of an anti-stretching wear reinforcing agent, 15-30 parts of an anti-tearing reinforcing agent, 15-30 parts of a high-temperature resistant flexibilizer, 3-10 parts of a crosslinking agent and 2-8 parts of a crosslinking assistant;

compared with the preparation material of the cover rubber piece, the preparation material of the core rubber piece also comprises 2-10 parts of tackifier.

2. The chlorine-zinc flame-retardant high-temperature-resistant conveying belt according to claim 1, wherein the active agent is one or two of zinc oxide and stearic acid, the high-temperature antioxidant is one or two of NBC and RD, the chlorine-zinc composite flame retardant is zinc chloride and chlorinated paraffin according to a ratio of 4: 5, the tensile and wear resistant reinforcing agent is medium and ultra-resistant carbon black, the tear resistant reinforcing agent is precipitated silica, the high temperature resistant flexibilizer is aromatic oil, the crosslinking agent is one or more of morpholine disulfide, dicumyl peroxide and sulfur, and the crosslinking assistant is benzothiazole disulfide; the tackifier is a cobalt salt adhesive.

3. The preparation method of the chlorine zinc flame-retardant high-temperature-resistant conveying belt according to claim 2 is characterized by comprising the following steps of:

1) preparing a cover rubber sheet:

101) preparing a film-covering formulation according to the formulation of claim 2;

102) mixing the cover rubber;

103) rolling and hot refining;

104) rolling the cover rubber sheet;

2) preparing a core film:

201) preparing a core film formulation according to the formulation of claim 2;

202) mixing core rubber;

203) calendering and hot refining, and rubberizing mesh fabrics;

204) calendering the core rubber sheet;

3) the cover rubber sheet and the core rubber sheet are overlapped and compounded together according to the specified size of the corner to form a rubber blank;

4) pretreating a steel wire rope;

5) forming and checking a conveyer belt by using the rubber blank prepared in the step 3) and the steel wire rope prepared in the step 4);

6) vulcanizing;

7) checking, packaging and warehousing.

4. The method for preparing the chlorine zinc flame-retardant high-temperature-resistant conveying belt according to claim 3, wherein in the step 101) and the step 201), when the chlorine zinc composite flame retardant is prepared, zinc chloride and chlorinated paraffin are respectively ground to 60 meshes and uniformly mixed to form the chlorine zinc composite flame retardant.