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Food-grade heat-resistant and wear-resistant conveyor belt cover rubber and preparation method thereof

A conveyor belt, food-grade technology, applied in the field of food-grade heat-resistant and wear-resistant conveyor belt cover rubber and its preparation, to achieve the effect of prolonging service life and improving quality

Pending Publication Date: 2021-02-26
江苏凯嘉橡胶科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (2) The conveyor belt used must be able to work for a long time under the condition of 100 ℃;

Method used

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  • Food-grade heat-resistant and wear-resistant conveyor belt cover rubber and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] Through the statistics of edible salt production enterprises over the years, the following parameters are obtained for the conveyor belts that need to be used:

[0041] 1. Hygienic requirements (GB2762 and GB2760 standard requirements)

[0042] Evaporation residue of 4% acetic acid soaking solution≤1000mg / L

[0043] Evaporation residue of n-ethane soaking solution≤2000mg / L

[0044] Potassium permanganate consumption in water soaking solution≤70mg / L

[0045] Heavy metal (calculated as Pb) 4% acetic acid soaking solution≤1mg / L

[0046] 2. Heat-resistant requirements (GB / T20021 canvas core heat-resistant conveyor belt type T1)

[0047] After the sample is aged at 100℃×7d

[0048] Minimum strength value ≥ 12MPa

[0049] Change in strength ≤ 25% compared with before aging

[0050] The lowest elongation at break ≥ 200%

[0051] Change in elongation at break ≤ 50% compared with before aging

[0052] Maximum hardness≤85IRHD

[0053] Change in hardness ≤ 20IRHD compared...

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PUM

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Abstract

The invention discloses food-grade heat-resistant and wear-resistant conveyor belt cover rubber, provides a raw material ratio, and discloses a preparation method of the food-grade heat-resistant andwear-resistant conveyor belt cover rubber based on the raw material ratio. According to the food-grade heat-resistant and wear-resistant conveyor belt cover rubber and the preparation method thereof,during material selection, the formula performance is considered to meet the index requirement, and the mutual matching with a conveyor belt framework material, rubbing rubber or sticking rubber is also considered, so that the prepared cover rubber meets the sanitary requirement, the heat-resistant and wear-resistant requirements, and the production and use requirements of edible salt are met; thequality of the conveyor belt is improved, and the service life of the rubber belt is prolonged.

Description

technical field [0001] The invention belongs to the technical field of conveyor belts, in particular to a food-grade heat-resistant and wear-resistant conveyor belt covering glue and a preparation method thereof. Background technique [0002] Edible salt is a necessity in people's daily life. It is refined from seawater, underground brine, salt lake brine, sea salt, rock salt, lake salt, etc. A large number of conveyor belts are used in the production process, which requires the preparation of conveyor belt covering rubber. corresponding requirements. [0003] The current national standard GB / T5461 for edible salt clearly requires that it must not contain obvious foreign matter that has nothing to do with salt. At the same time, it requires strict control of heavy metal content and clearly stipulates the maximum content standard. [0004] In this regard, edible salt production enterprises have strictly controlled all aspects of production, especially focusing on the polluti...

Claims

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Application Information

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IPC IPC(8): C08L9/06C08L9/00C08L91/06C08L91/00C08K13/02C08K5/09C08K3/04C08K3/22C08K5/40B65G15/32
CPCC08L9/06B65G15/32C08K2003/2296C08L2201/08C08L2205/035C08L9/00C08L91/06C08L91/00C08K13/02C08K5/09C08K3/04C08K3/22C08K5/40
Inventor 陈学和沈王平张振秀陈春连倪伟何承霞夏茂华
Owner 江苏凯嘉橡胶科技股份有限公司
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