CN-121991497-A - Composite grass mowing rope and preparation process thereof

Abstract

A composite grass mowing rope and a preparation process thereof belong to the technical field of garden tools. According to the weight ratio, the composite grass beating rope consists of 75% -97% of nylon and 3% -25% of metal iron powder, and the particle size of the metal iron powder is 80-300 meshes. The invention can improve the wear resistance of the straw rope and is beneficial to environmental protection.

Inventors

• QIN GUIRONG

Assignees

• 苏州宇园机械有限公司

Dates

Publication Date

20260508

Application Date

20260305

Claims (2)

1. 1. The composite grass beating rope is characterized by comprising 75-97% of nylon and 3-25% of metal iron powder in a weight ratio; The particle size of the metal iron powder is 80-300 meshes.
2. 2. The preparation process of the composite grass beating rope is characterized by comprising the following steps of: S1, uniformly stirring and mixing 75-97% of nylon and 3-25% of metal iron powder, heating to melt nylon granules, extruding, and cooling and molding in the extrusion process, wherein the particle size of the metal iron powder is 80-300 meshes; S2, stretching at a low temperature of 90-100 ℃ to control the stretching rate to be 270-280%, and stretching at a high temperature of 200-250 ℃ to control the total stretching rate to be 300-310%, so as to obtain the composite grass-beating rope.

Description

Composite grass mowing rope and preparation process thereof Technical Field The invention relates to a composite grass mowing rope and a preparation process thereof, and belongs to the technical field of garden tools. Background The grass beating rope is used as a core working part of the mower and is widely applied to the scenes of urban greening maintenance, garden landscape pruning, agricultural straw harvesting and the like. Since the commercialization of nylon grass ropes in the 70 s of the 20 th century, plastic grass ropes gradually replace the traditional metal cutters by virtue of the advantages of light weight, good flexibility, high cutting efficiency and the like, and become the standard configuration of small-sized grass cutting equipment. During use, the grass rope needs to run at high speed to strike the weeds. Inevitably, the grass ropes moving at high speed also strike rocks, soil and hard boundaries. Therefore, in addition to the need for sufficient toughness to prevent breakage, the grass rope is required to have a certain wear resistance to ensure the service life. The existing plastic grass mowing rope is made of nylon materials generally, the nylon materials have relatively excellent toughness, the processing technology is mature, the cost is low, but the plastic grass mowing rope also has the problem of insufficient wear resistance, and needs to be improved. Disclosure of Invention Aiming at the defects in the prior art, the invention provides the composite grass mowing rope and the preparation process thereof, which can improve the wear resistance of the grass mowing rope and are beneficial to environmental protection. The first aspect of the invention relates to a composite grass beating rope, which consists of 75-97% of nylon and 3-25% of metal iron powder in a weight ratio; The particle size of the metal iron powder is 80-300 meshes. The second aspect of the invention relates to a preparation process of the composite grass beating rope, which comprises the following steps: S1, uniformly stirring and mixing 75-97% of nylon and 3-25% of metal iron powder, heating to melt nylon granules, extruding, and cooling and molding in the extrusion process, wherein the particle size of the metal iron powder is 80-300 meshes; S2, stretching at a low temperature of 90-100 ℃ to control the stretching rate to be 270-280%, and stretching at a high temperature of 200-250 ℃ to control the total stretching rate to be 300-310%, so as to obtain the composite grass-beating rope. Technical effects The metal iron powder with specific particle size is mixed with nylon plastic in a certain proportion, so that the wear-resisting property of the straw beating rope is improved, the service life of the straw beating rope is prolonged, and the environment protection is facilitated due to the smaller plastic usage amount and the higher service life. Detailed Description Embodiments of the present invention will be described in detail below. The experimental procedure, in which specific conditions are not noted in the examples, was performed according to conventional methods and conditions. The embodiment of the invention relates to a composite grass beating rope, which consists of 75-97% of nylon and 3-25% of metal iron powder according to the weight proportion. The particle size of the metal iron powder is 80-300 mesh, preferably 80 mesh, 90 mesh, 100 mesh, 150 mesh, 200 mesh, 250 mesh, 300 mesh, etc. For some preferred embodiments, the weight proportion of nylon may be 75%, 76%, 77%, 78%, 79%, 80%, 81%, 82%, 83%, 84%, 85%, 86%, 87%, 88%, 89%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, etc. For some preferred embodiments, the weight proportion of the metallic iron powder may be 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24%, 25%, etc. The research of the inventor shows that when the addition amount of the metal iron powder is less than 3%, the effect of enhancing the abrasion resistance of the grass rope cannot be achieved, and when the addition amount of the metal iron powder is more than 25%, the toughness of the grass rope is difficult to maintain, and the grass rope is easier to break in the grass cutting process. Example 1 The embodiment relates to a preparation process of a composite grass beating rope, which comprises the following steps: s1, uniformly stirring and mixing nylon granules and metal iron powder with the particle size of 200 meshes according to the weight ratio of 90:10, heating to melt the nylon granules, and then extruding the molten nylon granules to a cold water tank with the temperature of 30 ℃ at 260 ℃ for cooling and molding; S2, stretching at a low temperature of 90 ℃ to control the stretching rate to 270%, and stretching at a high temperature of 200 ℃ to control the total stretching rate to 300%, so as to obtain the composite grass beating rope. Example 2 The embodiment relates to a preparation process of a composite grass beating ro