Polyamide fibre and aramid fibre gum dipping liquid and production process thereof

Abstract

The invention discloses polyamide fibre and aramid fibre gum dipping liquid and a production process thereof. The formula of the gum dipping liquid comprises the following components: 142-146 parts of phenol, 42-46 parts of anacardol, 220-226 parts of formaldehyde solution, 23-26.5 parts of sodium hydroxide solution, 2.5-3.5 parts of hydrogen peroxide, 310-315 parts of resorcinol, and 245-250 parts of water. The process comprises the following steps of: adding and mixing phenol, anacardol and formaldehyde; adding sodium hydroxide at the temperature of 28-32 DEG C; heating when the vacuum degree value is 500mmHg, so as to enable the temperature to be 35 DEG C; stopping heating; performing self heat production for a period, so as to enable the temperature to rise to 75 DEG C, and keeping constant temperature of 75 DEG C; cooling to 40 DEG C; adding the water, hydrogen peroxide and resorcinol in sequence, rising the temperature to 95 DEGC and keeping the constant temperature of 95 DEG C, and measuring the viscosity; rapidly cooling after the viscosity is up to be at a certain degree, adding a small amount of the sodium hydroxide after the temperature is cooled to be at 40 DEG C so as to enable the water consistency and the pH value to be standard; and canning. According to the polyamide fibre and aramid fibre gum dipping liquid and the production process thereof, the anacardol is used for replacing part of the phenol, so that the harm on a body is reduced; and the gum attaching amount of an obtained product is increased, and the gum liquid intensity and the gum liquid viscosity are enhanced.

Description

technical field [0001] The invention belongs to the technical field of dipping solution, in particular to a nylon aramid dipping solution and a production process thereof. Background technique [0002] As a kind of polyester canvas, nylon canvas and aramid canvas are mainly used in the skeleton of rubber products, such as V-belts, synchronous belts or conveyor belts. The main function is to bond the cords in the canvas together and enhance its wear resistance, corrosion resistance, high temperature resistance and tensile strength. The existing nylon aramid dipping solution is mainly mixed with meta-nail liquid and latex to glue the canvas. This mixed glue solution cannot effectively diffuse and penetrate with the canvas and the viscosity is not enough, which makes the amount of glue to be larger than that of the canvas. Low, the gluing effect is poor; in the case of a high amount of glue, the tensile strength of the polyester fiber does not increase significantly after the ...

AI Technical Summary

Problems solved by technology

The existing nylon and aramid fiber dipping solution is mainly mixed with methane solution and latex to glue the canvas. This mixed glue solution cannot effectively diffuse and penetrate with the canvas and the viscosity is not enough, so that the amount of glue applied is relatively large. Low, gluing effect is poor; so that in the case of a high amount of glue attached, the tensile strength of the polyester fiber does not increase significantly after the glue is dried and heat-treated at high temperature; and in the production operation, long-term exposure to phenol will affect the human body. health, so it is necessary to improve