阅读说明：本技术 一种钛镍合金感温记忆材料及其应用 (Titanium-nickel alloy temperature-sensing memory material and application thereof ) 是由 陈楚洪 于 2020-07-03 设计创作，主要内容包括：本发明涉及记忆合金技术领域,公开了一种钛镍合金感温记忆材料,其弹性塑性的感温记忆的温度为20-36℃；所述钛镍合金感温记忆材料制备步骤如下：将钛镍合金置于开放式模具450-480℃环境下热处理20-30min；然后立刻转至13-18℃的水中进行淬水处理；所述钛镍合金包含41-45.9％的钛、54-58.9％的镍、0-0.3％的铁、0-0.3％的铜和0-0.3％的银。该钛镍合金感温记忆材料弹性塑性的感温记忆的温度为20-36℃,在20℃以下环境中,弹性塑性降低,且温度越低越柔软；在常温干燥状态下,材料弹性塑性变化不大；在达到36℃以上时,弹性塑性升高,变形后可立刻恢复。(The invention relates to the technical field of memory alloys, and discloses a titanium-nickel alloy temperature-sensitive memory material, wherein the temperature of elastic-plastic temperature-sensitive memory is 20-36 ℃; the preparation method of the titanium-nickel alloy temperature-sensing memory material comprises the following steps: placing the titanium-nickel alloy in an open mold for heat treatment at the temperature of 450 ℃ and 480 ℃ for 20-30 min; then immediately transferring the mixture to water with the temperature of 13-18 ℃ for quenching treatment; the titanium-nickel alloy comprises 41-45.9% of titanium, 54-58.9% of nickel, 0-0.3% of iron, 0-0.3% of copper and 0-0.3% of silver. The temperature of the elastic and plastic temperature sensing memory of the titanium-nickel alloy temperature sensing memory material is 20-36 ℃, the elastic and plastic property is reduced in the environment below 20 ℃, and the lower the temperature is, the softer the temperature is; under the normal temperature drying state, the elastic plasticity of the material is not changed greatly; when the temperature reaches above 36 ℃, the elasticity and the plasticity are increased, and the elastic deformation can be immediately recovered.)

1. The titanium-nickel alloy temperature-sensing memory material is characterized in that the temperature of elastic-plastic temperature-sensing memory is 20-36 ℃; the preparation method of the titanium-nickel alloy temperature-sensing memory material comprises the following steps: placing the titanium-nickel alloy in an open mold for heat treatment at the temperature of 450 ℃ and 480 ℃ for 20-30 min; then immediately transferring the mixture to water with the temperature of 13-18 ℃ for quenching treatment; the titanium-nickel alloy comprises, by mass, 41-45.9% of titanium, 54-58.9% of nickel, 0-0.3% of iron, 0-0.3% of copper and 0-0.3% of silver.

2. The titanium-nickel alloy temperature-sensitive memory material as defined in claim 1, wherein the titanium-nickel alloy comprises 43.0-43.9% titanium, 56.0-56.9% nickel, 0-0.03% iron, 0-0.03% copper and 0-0.022% silver by mass.

3. The titanium-nickel alloy temperature-sensitive memory material as defined in claim 2, wherein the titanium-nickel alloy is heat treated in an open mold at 470 ± 5 ℃ for 25 ± 2 min.

4. The titanium-nickel alloy temperature-sensitive memory material as defined in claim 3, wherein the temperature of the temperature-sensitive memory of the elastic-plastic property is 30-36 ℃.

5. The titanium-nickel alloy temperature-sensitive memory material as defined in claim 4, wherein the titanium-nickel alloy comprises 43.4% titanium, 56.5% nickel, 0.03% iron, 0.03% copper and 0.022% silver by mass; the preparation method of the titanium-nickel alloy temperature-sensing memory material comprises the following steps: placing the titanium-nickel alloy in an open die at 470 +/-5 ℃ for heat treatment for 25 min; then immediately transferring to water with the temperature of 15 +/-1 ℃ for quenching treatment.

6. The titanium-nickel alloy temperature-sensitive memory material of claim 5, wherein the heat treatment is performed in a muffle furnace.

7. The titanium-nickel alloy temperature-sensitive memory material of claim 6, wherein the water for the hardening treatment is circulating cold water.

8. The titanium-nickel alloy temperature-sensitive memory material according to any one of claims 1 to 7, wherein the titanium-nickel alloy temperature-sensitive memory material is in the form of a strip.

9. The application of the titanium-nickel alloy temperature-sensing memory material is characterized in that the titanium-nickel alloy temperature-sensing memory material of claim 8 is applied to underwear.

10. The use of the titanium-nickel alloy temperature-sensitive memory material as defined in claim 9, wherein said undergarment is a brassiere.

Technical Field

The invention relates to the technical field of memory alloys, in particular to a titanium-nickel alloy temperature-sensing memory material and application thereof.

Background

The underwear steel ring made of the traditional nickel-titanium alloy only has high elastic energy without primary deformation, when the stress in a short time is subjected to plastic change, the shape can be recovered immediately after the external force is removed, but when the deformation is pressed by the external force for a long time, the deformation cannot be recovered, so that the underwear steel ring is not beneficial to packaging and transportation. And because the steel ring of the underwear is tiny, and the two ends are sharp, the underwear is easy to be damaged in the washing process of the underwear. In addition, due to the instability of the processing mode, the underwear steel ring is easy to break when large plastic deformation occurs.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the memory material capable of rapidly recovering deformation when attached to the skin is manufactured, and the requirement is that in an environment below 20 ℃, the elasticity and the plasticity are reduced, and the memory material is softer at lower temperature; under the normal temperature state, the elastic plasticity of the material is not changed greatly, but when the temperature reaches the environment temperature of more than 36 ℃, the elastic plasticity is increased, and the material can recover immediately after deformation. After the steel ring made of the memory material is applied to underwear, the steel ring is as soft as cotton-flax and chemical fiber clothes during washing, and the problem that the steel ring cannot recover deformation after being pressed for a long time during packaging and transportation and the underwear is easily damaged during washing is solved.

In order to solve the technical problems, the invention adopts the technical scheme that:

the temperature sensing memory material of titanium-nickel alloy has elastic and plastic temperature sensing memory temperature of 20-36 deg.c; the preparation method of the titanium-nickel alloy temperature-sensing memory material comprises the following steps: placing the titanium-nickel alloy in an open mold, and carrying out heat treatment for 20-30min at the temperature of 450-; then immediately transferring the mixture to water with the temperature of 13-18 ℃ for quenching treatment; the titanium-nickel alloy comprises, by mass, 41-45.9% of titanium, 54-58.9% of nickel, 0-0.3% of iron, 0-0.3% of copper and 0-0.3% of silver.

Preferably, the titanium-nickel alloy comprises 43.0-43.9% of titanium, 56.0-56.9% of nickel, 0-0.03% of iron, 0-0.03% of copper and 0-0.022% of silver by mass fraction.

Preferably, the titanium-nickel alloy is placed in an open die and is subjected to heat treatment at 470 +/-5 ℃ for 25 +/-2 min.

Preferably, the temperature of the elastic and plastic temperature sensing memory of the titanium-nickel alloy temperature sensing memory material is 30-36 ℃.

Preferably, the titanium-nickel alloy comprises 43.4% of titanium, 56.5% of nickel, 0.03% of iron, 0.03% of copper and 0.022% of silver by mass fraction; the preparation method of the titanium-nickel alloy temperature-sensing memory material comprises the following steps: placing the titanium-nickel alloy in an open die, and carrying out heat treatment for 25min at the temperature of 470 +/-5 ℃; then immediately transferring to water with the temperature of 15 +/-1 ℃ for quenching treatment.

Preferably, the heat treatment is performed in a muffle furnace.

Preferably, the water for the quenching treatment is circulating cold water. The heat of the titanium-nickel alloy is quickly taken away by using circulating cold water, so that the problem that the water temperature is increased to be separated from the expected water temperature during water quenching is solved.

Preferably, the titanium-nickel alloy temperature-sensing memory material is strip-shaped.

The titanium-nickel alloy temperature-sensing memory material can be applied to underwear.

Further, the undergarment is a brassiere.

The temperature of the elastic and plastic temperature sensing memory material is 20-36 ℃, the elastic and plastic property is reduced in the environment below 20 ℃, and the lower the temperature is, the softer the material is; under the normal temperature state, the elastic plasticity of the material is not changed greatly (basically unchanged); when the temperature reaches above 36 ℃, the elasticity and the plasticity are increased, and the elastic deformation can be immediately recovered. The temperature-sensing memory material of the titanium-nickel alloy can be made into a steel ring (as shown in figures 1 and 2), is applied to underwear such as bras and the like, can achieve the effect that the temperature-sensing memory material of the titanium-nickel alloy is soft and does not damage the underwear when washed by cold water, and simultaneously, the product can not lose the original function of lifting the chest and the wearing comfort performance due to transportation pressure, long service time and the like.

The temperature of the elastic and plastic temperature sensing memory of the titanium-nickel alloy temperature sensing memory material mainly depends on four factors of components of the titanium-nickel alloy, heat treatment mode, temperature, time and extraction water temperature of the titanium-nickel alloy. Through continuous tests and comparative tests of conditions such as various temperatures, the titanium-nickel alloy with specific component content is selected and heated to the temperature of 450-480 ℃, heat treatment is carried out for 20-30 minutes, and water quenching treatment is carried out through circulating cold water at the temperature of 13-18 ℃ after discharge (until the product is cooled), so that the elastic plasticity of the manufactured product is reduced below the water temperature of 20 ℃ (the elastic plasticity of the product is unchanged at normal temperature, and the plastic elasticity is softer when the water temperature is lower), and the soft degree of the underwear can be washed without being damaged; but can restore the deformation and increase the elastic plasticity under the environment with the temperature of more than 36 ℃ (which is close to the temperature of human body).

The traditional die is a closed die, the heat treatment mode is closed, the temperature is transferred to the titanium-nickel alloy through the die for heat treatment (uneven heating is easy), if the closed die is adopted, the temperature-sensitive memory material obtained by processing has the condition that part of the temperature-sensitive memory material is unqualified, and particularly, the qualification rate is difficult to control during mass production. The mold adopts an open mold, so that the titanium-nickel alloy is quickly heated to the heat treatment temperature and is directly and uniformly heated, and the problem that the processing condition of the titanium-nickel alloy is difficult to control due to indirect heat conduction in a closed mold is solved.

When the titanium-nickel alloy comprises 41-45.9% of titanium, 54-58.9% of nickel, 0-0.3% of iron, 0-0.3% of copper and 0-0.3% of silver by mass, placing the titanium-nickel alloy in an open mold, and carrying out heat treatment for 20-30min at the temperature of 450-; then immediately transferring the mixture to water with the temperature of 13-18 ℃ for quenching treatment; the temperature for realizing the temperature-sensitive memory of the elastic plasticity is 20-36 ℃, namely, the elastic plasticity is reduced in the environment below 20 ℃, and the lower the temperature is, the softer the temperature is; under the normal temperature state, the elastic plasticity of the material is not changed greatly, and when the temperature reaches the environmental temperature of over 36 ℃, the elastic plasticity is increased, and the material can recover immediately after deformation.

When the titanium-nickel alloy comprises 43.0-43.9% of titanium, 56.0-56.9% of nickel, 0-0.03% of iron, 0-0.03% of copper and 0-0.022% of silver by mass, placing the titanium-nickel alloy in an open die, and carrying out heat treatment for 25 +/-2 min at 470 +/-5 ℃; then immediately transferring the mixture to water with the temperature of 13-18 ℃ for quenching treatment; the temperature for realizing the temperature sensing memory of the elastic plasticity of the titanium-nickel alloy temperature sensing memory material is 30-36 ℃, namely, in the environment below 30 ℃, the elastic plasticity is reduced, and the lower the temperature is, the softer the temperature is; when the temperature reaches the environment temperature of over 36 ℃, the elasticity and the plasticity are increased, and the elastic deformation can be immediately recovered. Preferably, the titanium-nickel alloy comprises 43.4% of titanium, 56.5% of nickel, 0.03% of iron, 0.03% of copper and 0.022% of silver by mass fraction; placing the titanium-nickel alloy in an open die at 470 +/-5 ℃ for heat treatment for 25 min; then immediately transferring to water with the temperature of 15 +/-1 ℃ for quenching treatment.

Drawings

FIG. 1 is a front view of a Ti-Ni alloy temperature-sensitive memory material according to the present invention;

FIG. 2 is a top view of the Ti-Ni alloy temperature-sensitive memory material of the present invention;

fig. 3 is an optical microscope photograph of the front surface of the temperature sensitive memory material made of titanium-nickel alloy according to embodiment 3 of the present invention, which is enlarged by 100 times, 200 times and 400 times, respectively;

fig. 4 is an optical microscope photograph of the temperature sensitive memory material of titanium-nickel alloy enlarged by 100 times, 200 times and 400 times from the side thereof according to embodiment 3 of the present invention;

FIG. 5 is an optical micrograph at 100, 200 and 400 magnifications of the front face of a commercial product selected according to the present invention;

FIG. 6 is an optical micrograph at 100, 200 and 400 magnifications of the side surfaces of a commercial product selected according to the present invention, respectively;

FIG. 7 is an optical microscope photograph of the front surface of the titanium-nickel alloy before processing in example 3 of the present invention, at 100 times, 200 times and 400 times, respectively;

FIG. 8 is an optical microscope photograph of 100 times, 200 times and 400 times enlarged side surfaces of a titanium-nickel alloy before processing in example 3 of the present invention, respectively;

wherein, 1-front face and 2-side face.

Detailed Description