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Fatigue Resistant Layered Elastomers

An elastomer, fatigue-resistant technology, applied in the field of fatigue-resistant layered elastomers, can solve problems such as inability to obtain durability

Active Publication Date: 2021-05-25
WUXI KEYI NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the shortcomings of the above-mentioned existing production that cannot obtain a layered elastomer with better durability, the applicant provides a fatigue-resistant layered elastomer, and further improves the layered elastomer by controlling the proportion of continuous joints. Compression Durability and Service Life

Method used

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  • Fatigue Resistant Layered Elastomers
  • Fatigue Resistant Layered Elastomers
  • Fatigue Resistant Layered Elastomers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The raw material of polyester elastomer A1 is fed into the extruder, heated to 225°C in the extruder to a molten state, and transported to the spinneret by a metering pump, and the continuous line fiber is sprayed from the spinneret and falls into the water to bend into a ring , the contact parts between the thread bodies are welded to each other, the traction speed is 0.4 m / min, infrared heat insulation is used between the spinning plate and the lower water tank, and the woven continuous line body fibers are compressed by the mold in warm water at 30°C until both sides are flat The three-dimensional layered elastomer 3 is obtained by final molding. The layered elastomer 3 is tested by the above method, and the physical parameters obtained are shown in Table 2. The network structure density of the layered elastomer 3 is 60kg / m 3 , and the obtained layered elastomer 3 has a continuous junction ratio of 26%, a 40% indentation hardness of 189N, and a fatigue-resistant hardn...

Embodiment 2

[0036] The specific implementation method is the same as in Example 1, but the raw material used is changed to polyester elastomer B1, the continuous junction ratio of the obtained layered elastomer 3 is 31%, the 40% indentation hardness is 133N, and the hardness after repeated compression of fatigue resistance The loss rate is 15%.

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Abstract

The invention discloses a fatigue-resistant layered elastic body, which uses thermoplastic polyester elastomer as a raw material to extrude long strips, curls and bonds to form a layer with a certain thickness, and the contact parts of adjacent strips are welded to each other , forming continuous joints and point joints, of which the proportion of continuous joints is more than 20%. When the ratio of continuous joints exceeds 20%, the fatigue resistance to repeated compression hardness loss rate is lower than 23%. The higher the proportion of continuous joints, the better the durability of repeated compression. Therefore, increasing the ratio of continuous joints of layered elastomers can obtain Products with resistance to repeated compression.

Description

technical field [0001] The invention relates to a layered elastic body with a certain thickness formed by curling long fiber filaments. The long fiber filaments are made of thermoplastic polyester elastomer as a raw material. The elastic body can be suitable for office chairs, sofas, beds and other fields , especially a fatigue-resistant layered elastomer. Background technique [0002] Existing layered elastomers are often produced by spinning, specifically extruding polyester elastomers in the molten state at a certain speed and temperature through a spinning plate, and then falling into water to cool after extrusion, and the continuous line body It is a three-dimensional network structure obtained by bending into a ring, welding the contact parts to each other, flattening both sides, and finally cutting to the desired size. Since the existing layered elastomers are commonly used in related products such as cushions and mattresses, it is necessary to consider their repeate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H3/011D04H3/16A47C27/12
CPCD04H3/011D04H3/16A47C27/12D04H3/018D04H3/037D10B2503/00
Inventor 陈浩
Owner WUXI KEYI NEW MATERIAL CO LTD
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