Production method of high temperature resistance type rubber-dipped canvas for heat-resistant conveying belt

A heat-resistant conveyor belt and high-temperature-resistant technology, which is applied in the field of chemical fiber textiles, can solve the problems of easy deformation of heat-resistant conveyor belts and easy delamination of conveyor belts.

Inactive Publication Date: 2016-10-12
SHANDONG HELON POLYTEX CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the skeleton material for heat-resistant conveyor belts is mainly conventional dipped EP canvas. The heat-resistant conveyor belt produced by conventional dipped EP canvas is easy to deform when it runs at high temperature, and the conveyor belt is easy to delaminate when it runs for a long time.

Method used

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  • Production method of high temperature resistance type rubber-dipped canvas for heat-resistant conveying belt
  • Production method of high temperature resistance type rubber-dipped canvas for heat-resistant conveying belt
  • Production method of high temperature resistance type rubber-dipped canvas for heat-resistant conveying belt

Examples

Experimental program
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Effect test

preparation example Construction

[0037] Preparation of the pre-dipping liquid used in the pre-dipping process: the pre-dipping liquid is an isocyanate aqueous dispersion impregnation liquid blocked by end groups, and the content of the pre-dipping liquid dipping formula is: desalinated water is 94 ± 4%, isocyanate 5 ±2%, epoxy resin 1±0.5%.

[0038] Preparation of the second immersion solution for the second dipping process: the second immersion solution is based on the conventional resorcinol-formaldehyde-based water-based adhesive system RFL solution, and an appropriate amount of isocyanate and an appropriate amount of natural latex are added to the formula The specific formula is: softened water 1444±7.22kg, caustic soda 3.0±0.009kg, resorcinol 50±0.25kg, formaldehyde 75±0.375kg (concentration 37%), ammonia 40±0.2kg (concentration 28%), Pilatex 1170±5.85kg, natural latex 60~150kg, isocyanate 20~60kg.

[0039] After the second dipping process, it is also coiled and packaged to finally form a finished produ...

Embodiment 1

[0040] Embodiment 1: High temperature resistant EG-150 type

[0041] 1. See the following table for material selection and twist weaving process:

[0042]

[0043] 2. Use the double-bath dipping process route for dipping. The dipping process is: dipping speed 25m / min, 1# drying zone temperature 175°C, thermal stretching zone temperature 230°C, 2# drying zone temperature 135°C , the temperature in the heat setting area is 215°C; the stretch rate between 1# tension frame and 2# tension frame (1# dipping tank) is 100%, between 2# tension frame and 3# tension frame (1# is dry and drawn) Stretching area) The draft rate is 100%, between 3# tension frame and 4# tension frame (2# drying area), the draft rate is 99.5%, between 4# tension frame and 5# tension frame (drying heat setting area) The draft rate is 97.5%.

[0044] 3. The dipping formula used is as follows: the pre-dipping liquid is an isocyanate aqueous dispersion impregnation liquid blocked by end groups. The specific ...

Embodiment 2

[0048] Embodiment 2: high temperature resistant EG-200 type

[0049] 1. See the following table for material selection and twist weaving process:

[0050]

[0051] 2. Adopt double-bath dipping process route for dipping. The dipping process is as follows: dipping speed 23m / min, 1# drying zone temperature 177°C, thermal stretching zone temperature 230°C, 2# drying zone temperature 130°C , the temperature in the heat setting area is 216°C; the stretch rate between 1# tension frame and 2# tension frame (1# dipping tank) is 100%, between 2# tension frame and 3# tension frame (1# is dry and drawn) Stretching zone) draft rate 100.2%, between 3# tension frame and 4# tension frame (2# drying area) draft rate 99.0%, between 4# tension frame and 5# tension frame (drying heat setting area) The draft rate is 97.5%.

[0052] 3, the dipping formula that adopts is identical with example 1 dipping formula.

[0053] 4. Product quality index of embodiment 2:

[0054]

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Abstract

The invention provides a production method of high temperature resistance type rubber-dipped canvas for a heat-resistant conveying belt. The production method of the high temperature resistance type rubber-dipped canvas for the heat-resistant conveying belt comprises a rubber dipping step; the rubber dipping is double-bath-method rubber dipping; the double-bath-method rubber dipping comprises a pre-dipping process and a secondary dipping process; the flow path of the pre-dipping process comprises the following steps of unwinding greige cloth, carrying out tensioning through a 1# tension bracket, carrying out rubber dipping through a 1# rubber dipping groove, carrying out the tensioning through a 2# tension bracket, carrying out baking through a 1# drying area, carrying out stretching through a hot stretching area, and carrying out tensioning through a 3# tensioning bracket; the flow path of the secondary rubber dipping process comprises the following steps of taking over the 3# tension bracket, afterwards, carrying out the rubber dipping through a 2# rubber dipping groove, carrying out the baking through a 2# drying area, carrying out the tensioning through a 4# tension bracket, carrying out stentering through a heat setting area (tentering), and carrying out tensioning through a 5# tension bracket. The production method of the high temperature resistance type rubber-dipped canvas for the heat-resistant conveying belt has the advantages that the high temperature resistance performance is good, the adhesion performance is good, and the dimensional stability is good.

Description

technical field [0001] The invention relates to the technical field of chemical fiber textiles, in particular to a canvas, in particular to a production method of a high-temperature-resistant dipped canvas for a heat-resistant conveyor belt. Background technique [0002] As we all know, heat-resistant conveyor belts are mainly used to transport high-temperature materials, such as: sintered ore, coke, cement clinker, lime, chemical fertilizers, etc.; the skeleton material needs to be covered with special synthetic rubber with excellent heat resistance. [0003] At present, the skeleton material for heat-resistant conveyor belts is mainly conventional dipped EP canvas. The heat-resistant conveyor belt produced by conventional dipped EP canvas is easy to deform when it runs at high temperature, and the conveyor belt is easy to delaminate when it runs for a long time. [0004] Based on the above shortcomings, it is necessary to develop a high-temperature-resistant dipped canvas ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06B21/00D06B3/30D06B23/04D03D13/00D03D15/00D06M13/395D06M15/55D06M15/693D06M15/41D06M101/32D03D15/267D03D15/283D03D15/50D03D15/573
CPCD03D13/008D03D15/00D06B3/30D06B21/00D06B23/04D06M13/395D06M15/41D06M15/55D06M15/693D06M2101/32D10B2331/04D03D15/267
Inventor 李涛刘希华李志武陈山张玉友阮长征
Owner SHANDONG HELON POLYTEX CHEM FIBER
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