阅读说明：本技术 一种等离子体表面改性阻燃纱线 (Plasma surface modified flame-retardant yarn ) 是由 马志宏 于 2020-10-21 设计创作，主要内容包括：本发明涉及一种等离子体表面改性阻燃纱线的方法,属于表面改性技术领域。该方法为：首先将纱线预处理工序,将处理好的纱线样品放入反应器,利用烘箱控制反应器温度,接着定量注入阻燃单体,调节放电功率为20-1000W,放电时间为0-100min,放电电压为5-30KV,放电频率为5-50KHz,改性处理时间为5-30s。本发明所用的低温常压等离子设备操作简便,成本低廉,工艺流程简单,本发明所采用的工艺参数设置,改性过程稳定,既能最大化的改善纱线的表面性能,同时能保留纱线原有的强度,改性时间的减少,大大节约了时间成本,适用于大批量的生产；本发明中的工艺参数的设定,能够大大提高表面改性的处理效果,增加纱线的阻燃性能。(The invention relates to a method for modifying flame-retardant yarns on the surface by plasma, belonging to the technical field of surface modification. The method comprises the following steps: firstly, a yarn pretreatment procedure, namely putting a treated yarn sample into a reactor, controlling the temperature of the reactor by using an oven, then quantitatively injecting a flame-retardant monomer, and adjusting the discharge power to be 20-1000W, the discharge time to be 0-100min, the discharge voltage to be 5-30KV, the discharge frequency to be 5-50KHz and the modification treatment time to be 5-30 s. The low-temperature normal-pressure plasma equipment used in the invention is simple and convenient to operate, low in cost and simple in process flow, the adopted process parameters are set, the modification process is stable, the surface performance of the yarn can be improved to the maximum extent, the original strength of the yarn can be kept, the modification time is reduced, the time cost is greatly saved, and the method is suitable for large-batch production; the setting of the process parameters in the invention can greatly improve the treatment effect of surface modification and increase the flame retardant property of the yarn.)

1. The utility model provides a flame-retardant yarn of plasma surface modification, passes through ordinary pressure low temperature plasma processing apparatus with the yarn in succession, adds fire-retardant monomer, carries out ordinary pressure low temperature plasma processing in the discharge gas, obtains the flame-retardant yarn through surface modification, its characterized in that: the yarn pretreatment process comprises the following steps: and (4) soaping the yarn, then washing with water and drying.

2. The plasma surface modified flame-retardant yarn of claim 1, wherein: the flame-retardant monomer is DMMP and is injected quantitatively through a microsyringe.

3. The plasma surface modified flame-retardant yarn of claim 1, wherein: the process parameters of the yarn subjected to normal-pressure low-temperature plasma treatment are as follows: the discharge power is 20-1000W, the discharge time is 0-100min, the discharge voltage is 5-30KV, the discharge frequency is 5-50KHz, and the modification treatment time is 5-30 s.

4. The plasma surface modified flame-retardant yarn of claim 1, wherein: the discharge gas is argon.

5. The plasma surface modified flame-retardant yarn of claim 1, wherein: the gas flow rate of the argon is 1-10L/min.

6. The plasma surface modified flame-retardant yarn of claim 1, wherein: the yarn continuously passes through the normal-pressure low-temperature plasma treatment device, namely the yarn is conveyed into the normal-pressure low-temperature plasma treatment device through a transmission shaft, and the yarn subjected to flame retardant treatment is conveyed out through another transmission shaft.

Technical Field

The invention relates to a yarn surface modification method, in particular to a method for modifying flame-retardant yarns on the surface by plasma, belonging to the technical field of surface modification.

Background

The combustion of the polymer is composed of 4 elements: heat source, oxygen, combustibles, and free radicals. To achieve flame retardancy, one or more of the processes is at least prevented or slowed. Modern flame retardant means usually rely on the following means to achieve the purpose of flame retardant, mainly including: diluting oxygen, diluting combustible gas, absorbing heat, forming a non-combustible protective film and the like. However, these treatment methods cannot make the yarn or fabric have better flame retardant property, and there are many methods for modifying the fiber surface at present, mainly including copolymerization method, graft modification method, blending method and composite spinning method, although these methods improve the fiber surface property to different extent, the surface modification is not uniform, the modification time is long, and the original strength of the fiber is damaged. At present, flame retardant modification of yarns is not involved, so that the development of a surface treatment method which can not damage the strength of the yarns and can effectively enable the yarns to have flame retardant property is of great significance.

Disclosure of Invention

The invention aims to solve the problems of long treatment time and poor treatment effect in the prior art in the background art, and provides a method for modifying flame-retardant yarns on the surface of plasma; meanwhile, the technology has short modification time, saves time and cost, and plays a guiding role in large-scale production process in the future.

In order to achieve the above purpose, the specific technical solution is as follows:

a plasma surface modified flame-retardant yarn is prepared through pretreating yarn, putting the treated yarn sample in reactor, controlling the temperature of reactor by baking oven, quantitatively injecting flame-retardant monomer, regulating discharge power to 20-1000W, discharging for 0-100min, discharging voltage to 5-30KV, discharging frequency to 5-50KHz and modifying for 5-30 s.

The pretreatment process comprises the following steps: and (4) soaping the yarns, taking out the yarns, cleaning the yarns with clear water, and air-drying the yarns for later use.

The flame-retardant monomer is DMMP and is injected quantitatively by a microsyringe.

The discharge gas in the present invention is a conventional discharge gas: nitrogen, argon, ammonia, or a mixed gas of argon and ammonia, and the like; preferably, the discharge gas of the present invention is argon.

Preferably, the flow rate of the argon gas is 1 to 10L/min.

Preferably, the yarn continuously passes through the normal-pressure low-temperature plasma treatment device in the invention means that the yarn is conveyed into the normal-pressure low-temperature plasma treatment device through a transmission shaft, and the yarn after flame retardant treatment is conveyed out through another transmission shaft.

The invention has the beneficial effects that: the low-temperature normal-pressure plasma equipment used in the invention is simple and convenient to operate, low in cost and simple in process flow, the adopted process parameters are set, the modification process is stable, the surface performance of the yarn can be improved to the maximum extent, the original strength of the yarn can be kept, the modification time is reduced, the time cost is greatly saved, and the method is suitable for large-batch production; the setting of the process parameters in the invention can greatly improve the treatment effect of surface modification and increase the flame retardant property of the yarn.

Detailed Description

The present invention is described in further detail below with reference to examples, which are intended to illustrate the present invention and should not be construed as limiting the scope of the present invention.

Example 1: a plasma surface modified flame-retardant yarn is prepared by soaping yarn, taking out, cleaning with clear water, and air drying; quantitatively injecting DMMP flame-retardant monomers through a microsyringe; setting the plasma treatment process parameters as discharge power of 50W, discharge time of 40min, discharge voltage of 5KV, discharge frequency of 5KHz, modification treatment time of 5s and argon gas flow rate of 1L/min to obtain the surface-modified flame-retardant yarn.

Example 2: a plasma surface modified flame-retardant yarn is prepared by soaping yarn, taking out, cleaning with clear water, and air drying; quantitatively injecting DMMP flame-retardant monomers through a microsyringe; setting the plasma treatment process parameters as 200W of discharge power, 60min of discharge time, 10KV of discharge voltage, 10KHz of discharge frequency, 10s of modification treatment time and 5L/min of argon gas flow rate, and obtaining the surface-modified flame-retardant yarn.

Example 3: a plasma surface modified flame-retardant yarn is prepared by soaping yarn, taking out, cleaning with clear water, and air drying; quantitatively injecting DMMP flame-retardant monomers through a microsyringe; setting the plasma treatment process parameters as that the discharge power is 500W, the discharge time is 80min, the discharge voltage is 20KV, the discharge frequency is 30KHz, the modification treatment time is 15s, and the gas flow rate of argon is 5L/min, so as to obtain the surface-modified flame-retardant yarn.

Example 4: a plasma surface modified flame-retardant yarn is prepared by soaping yarn, taking out, cleaning with clear water, and air drying; quantitatively injecting DMMP flame-retardant monomers through a microsyringe; setting the plasma treatment process parameters as that the discharge power is 1000W, the discharge time is 100min, the discharge voltage is 30KV, the discharge frequency is 50KHz, the modification treatment time is 20s, and the gas flow rate of argon is 10L/min, so as to obtain the surface-modified flame-retardant yarn.