CN107901543A - A kind of composite material squeezes the preparation method of oiling roller non-woven fabrics - Google Patents

Abstract

The invention relates to the field of non-woven fabric production. A method for preparing non-woven fabrics for oil squeeze rollers made of composite materials. The polyamide 66 fiber material is made to have the same temperature and humidity as the room, and Goon881 type antistatic finishing agent is mixed with deionized water at a volume ratio of 1:10 to prepare an antistatic Antistatic agent solution, antistatic agent solution is sprayed on polyamide 66 fiber material surface, antistatic agent and polyamide 66 fiber material mass ratio are 1:20; The polyamide 66 fiber material processed through step 2 is carded on the carding machine, Mix the self-crosslinking acrylate emulsion adhesive and deionized water at a volume ratio of 0.47:1 to prepare a working fluid, sandblast the working fluid on the fiber web, and place the dried fiber web in a flat vulcanizing machine, that is A non-woven fabric material for a composite squeeze roller is obtained.

Description

A kind of preparation method of non-woven fabric for oil squeeze roller of composite material

technical field

The invention relates to the field of non-woven fabric production.

Background technique

In modernization, the iron and steel industry is the country's basic raw material industry, and the quality of products produced by steel rolling enterprises plays a very important role in my country's economic construction. With the increasingly fierce market competition, users have put forward higher requirements for the internal performance and surface quality of products. Therefore, improving the cleanliness of the strip surface after rolling is a key link in improving product quality.

Removing residues on the surface of the strip not only requires the material to have good oil absorption properties, but also requires the material to have certain mechanical properties, such as tensile strength and hardness, to ensure a good rolling effect. In order to remove the residues on the surface of the strip, traditional rubber rollers are currently the most used in my country's steel rolling production lines, which can remove rolling oil and debris on the surface of the strip to a certain extent, but there is still a huge gap in terms of development requirements. It is mainly manifested in the following aspects: easy aging and cracking, short service life; no porosity, debris cannot be hidden in the rubber roller, under the extrusion force of the rubber roller, with the movement of the strip steel, the debris on the belt The steel surface is severely scratched; it is difficult to ensure a constant linear pressure, the thickness of the oil film is uncontrollable, and the oil squeezing effect is not good.

Polymer materials have good toughness, fatigue resistance and machinability, gradually replacing metal materials as the preferred material for manufacturing rolling parts. Non-woven fabrics are also called non-woven fabrics. Non-woven fabrics prepared according to specific production methods not only have good porous oil absorption, but also have tensile strength and hardness that meet the requirements for use in steel rolling production lines. It is made into a non-woven oil squeezing roller, which has unique porosity and compressibility, can hide the scraps on the surface of the strip in its porous structure, reduces scratches on the surface of the strip, and has self-healing properties , the service life is hundreds of times that of traditional rubber rollers. At the same time, it also has the advantages of high friction coefficient and controllable oil film thickness on the strip surface after oil squeezing. Therefore, using non-woven fabrics with this special property in the rolling production line can effectively remove strip surface residues and reduce strip surface scratches , can effectively improve the strip surface quality.

Contents of the invention

The technical problem to be solved by the present invention is: how to provide a new type of composite material non-woven fabric for oil squeezing rollers with environmental protection, high efficiency and good oil squeezing effect.

The technical scheme adopted in the present invention is: a preparation method of non-woven fabric for oil squeeze roller of composite material, carried out according to the following steps

Step 1. Place the polyamide 66 fiber material in an environment with a temperature of 15°C-30°C and a relative humidity of 30%-60% for 24 hours or more; make the polyamide 66 fiber material the same as the indoor temperature and humidity, which is convenient for subsequent carding.

Step 2. Mix the Goon881 antistatic finishing agent produced by Dongguan Jiahong Silicone Technology Co., Ltd. with deionized water at a volume ratio of 1:10 to prepare an antistatic agent solution, and spray the antistatic agent solution on the polyamide 66 fiber material On the surface, the mass ratio of antistatic agent to polyamide 66 fiber material is 1:20;

Step 3, carding the polyamide 66 fiber material processed in step 2 on a carding machine to form a fiber web with uniform longitudinal and transverse textures;

Step 4. Mix the self-crosslinking acrylate emulsion adhesive produced by Qingdao Jinsenda Chemical Co., Ltd. and deionized water at a volume ratio of 0.47:1 to prepare a working fluid, and sandblast the working fluid on the fiber net, every 0.01 square meters Spray 5-10ml of working fluid on the fiber net, and then dry it in a drying oven at 100°C for 5 minutes;

Step 5. Put the dried fiber web in a flat vulcanizer, keep the pressure at 0.5-5Mpa, the temperature at 25-160°C, and the duration for 5-25min, to obtain the non-woven fabric material for the composite squeeze roller.

As a preferred method: in step 3, card each 25g of polyamide 66 fibers into 40-50 times of longitudinal and transverse combinations, that is, 40-50 layers, each layer of polyamide 66 fibers is longitudinal or transverse, and two adjacent layers One layer is carded longitudinally and the other layer is carded transversely to form a uniform polyamide 66 fiber web layer interlaced longitudinally and transversely.

The beneficial effects of the invention are: the non-woven fabric has good oil-absorbing properties, and at the same time has strong tensile strength, hardness and high temperature resistance; at the same time, the non-woven fabric produced by the method has high oil-absorbing rate, light material quality and easy storage , easy to use, simple processing technology, low cost, and easy industrial production. The non-woven fabric produced by the invention is very suitable for removing rolling oil on the steel rolling surface in a cold-rolled steel strip production line, and can be made into a composite oil squeezing roller, and its oil squeezing effect is better than that of a traditional rubber roller. Because the non-woven fabric has porosity, compressibility and self-healing properties, it can hide debris on the surface of the strip steel in its pores, avoid scratches on the surface of the strip steel, and improve the surface quality of the strip steel. At the same time, the non-woven fabric has a higher friction coefficient than the traditional rubber roller, which can effectively remove the rolling oil on the surface of the strip and reduce the loss of rolling oil.

Detailed ways

A preparation method of non-woven fabric for composite material squeeze roller, according to the following steps

Step 1. Place the polyamide 66 fiber material in an environment with a temperature of 15°C-30°C and a relative humidity of 30%-60% for 24 hours or more;

Step 2. Mix the Goon881 antistatic finishing agent produced by Dongguan Jiahong Silicone Technology Co., Ltd. with deionized water at a volume ratio of 1:10 to prepare an antistatic agent solution, and spray the antistatic agent solution on the polyamide 66 fiber material On the surface, the mass ratio of antistatic agent to polyamide 66 fiber material is 1:20;

Step 3: Weigh 25g of the polyamide 66 fiber material processed in step 2, and lay it on a small carding machine for carding. The fiber web after carding is 45 vertical and horizontal (for example: for example, the first carding is horizontal, Then the second carding is the longitudinal direction, and the third is the transverse direction, so until 45 transverse and longitudinal) and the carded fiber web is sampled into a 100mm*100mm sample;

Step 4. Mix the self-crosslinking acrylate emulsion adhesive produced by Qingdao Jinsenda Chemical Co., Ltd. and deionized water at a volume ratio of 0.47:1 to prepare a working fluid, and sandblast the working fluid on the fiber net, every 0.01 square meters Spray 5-10ml of working fluid on the fiber net, and then dry it in a drying oven at 100°C for 5 minutes;

Step 5, place the dried fiber web in a flat vulcanizer, keep the pressure at 0.5 MPa, the temperature at 160° C., and last for 10 minutes to obtain the non-woven fabric material for the composite squeeze roller.

The average tensile strength of the prepared nonwoven fabric was 19.310kgf, the average hardness was 73.6A, and the average oil absorption rate was 45.2%.

Claims (2)

1. A preparation method for a non-woven fabric for a composite oil squeezing roller, characterized in that: carry out according to the following steps Step 1. Place the polyamide 66 fiber material in an environment with a temperature of 15°C-30°C and a relative humidity of 30%-60% for 24 hours or more; Step 2: Mix Goon881 type antistatic finishing agent with deionized water to prepare an antistatic agent solution at a volume ratio of 1:10, spray the antistatic agent solution on the surface of polyamide 66 fiber material, antistatic agent and polyamide 66 fiber The material mass ratio is 1:20; Step 3, carding the polyamide 66 fiber material processed through step 2 on a carding machine to make a fiber web with uniform longitudinal and transverse textures; Step 4. Mix the self-crosslinking acrylate emulsion adhesive and deionized water at a volume ratio of 0.47:1 to prepare a working solution, sandblast the working solution on the fiber net, and spray 5-10ml of the working solution per 0.01 square meters of fiber net , and then dried in a drying oven at 100°C for 5 minutes; Step 5. Put the dried fiber web in a flat vulcanizer, keep the pressure at 0.5-5Mpa, the temperature at 25-160°C, and the duration for 5-25min, to obtain the non-woven fabric material for the composite squeeze roller. 2. the preparation method of a kind of composite material squeezer nonwoven fabric according to claim 1, is characterized in that: in step 3, the polyamide 66 fiber of every 25g is carded into 40-50 times of longitudinal and transverse parallelism and.