High-hardness high-tenacity soft door seal magnetic stripe

Abstract

The invention discloses a high-hardness high-tenacity soft door seal magnetic stripe. The high-hardness high-tenacity soft magnetic stripe is characterized by comprising the following materials in parts by weight: 100 parts of ferrite powder, 5-10 parts of chlorinated polyethylene, 1-5 parts of polyethylene, 0.5-1 part of a stabilizing agent, and 0.5-1 part of a lubricating agent. The refrigeratordoor seal magnetic stripe disclosed by the invention is high in hardness and tenacity, good in product stability, safe and reliable to use, environment-friendly and nontoxic; the relatively high hardness is kept in a high temperature environment; after being folded in half, the door seal magnetic stripe cannot be broken; the door seal magnetic stripe is relatively low in unit weight, low in cost,good in tensile property, relatively uniform and steady in elongation and good in dimensional homogeneity; the severe contraction problem can be avoided; and the material technology in the inventionis not limited for manufacturing the refrigerator door seal magnetic stripe, and also can be used for manufacturing other sheet, round roller, square rubber magnetic-plastic products.

Description

technical field [0001] The invention relates to the field of rubber magnetic materials, in particular to a soft door seal magnetic strip with high hardness and high toughness. Background technique [0002] During the actual use of the refrigerator, a door seal needs to be installed on the inside of the refrigerator door, and the door seal is made of a door seal rubber sleeve with a soft magnetic strip installed inside. Ordinary refrigerator door seal soft magnetic strips generally have a hardness range of 42-50D (Shore hardness). The higher the hardness, the higher the requirements for the formula of soft magnetic strip materials and the equipment for making soft magnetic strip products. If only modifying the formula of the soft magnetic strip material, reducing the number of binders in the formula of the soft magnetic strip material, the hardness of the soft magnetic strip material can be improved, but the toughness of the soft magnetic strip material will be very poor, and...

AI Technical Summary

Problems solved by technology

If only modifying the formula of the soft magnetic strip material, reducing the number of binders in the formula of the soft magnetic strip material, the hardness of the soft magnetic strip material can be improved, but the toughness of the soft magnetic strip material will be very poor, and the elongation will decrease. Falling, when performing a 180-degree half-fold test on the soft magnetic strip material, the soft magnetic strip will break

If in order to ensure that the soft magnetic strip of the refrigerator door seal has good toughness and elongation, it is necessary to increase the amount of binder added to the soft magnetic strip material formula, at this time the hardness of the soft magnetic strip will be greatly reduced, seriously Affect the overall usable performance of the soft magnetic strip

In short, in the process of formulating the material formula of the ordinary refrigerator door seal soft magnetic strip, the hardness and toughness of the soft magnetic strip material cannot be combined, and a choice must be made according to the demand