CN113046022A - High-molecular sealant and preparation method thereof - Google Patents

Abstract

The invention relates to the technical field of sealants, in particular to a high polymer sealant which comprises the following components in parts by mass: oxidized castor oil: 24 percent; dehydrated castor oil: 15 percent; white carbon black: 1.5 percent; iron oxide red: 24 percent; talc powder: 24 percent; graphite: 11.5 percent. The invention also provides a preparation method for the polymer sealant, which comprises the following steps: step 1: drying iron oxide red, talcum powder and graphite with specified amount in a dryer; step 2: adding a specified amount of oxidized castor oil and dehydrated castor oil into a stirring kettle for stirring; and step 3: adding the dried raw materials in the step 1 into a stirring kettle for stirring; and 4, step 4: and slowly adding a specified amount of white carbon black into the stirring kettle, continuously stirring, and cooling to obtain the high-molecular sealant. The high-molecular sealant is resistant to oil, water, superheated steam and various acids and alkalis, has no damage or corrosion to the sealed working surface, is easy to remove and is convenient to use.

Description

High-molecular sealant and preparation method thereof

Technical Field

The invention relates to the technical field of sealants, in particular to a high-molecular sealant and a preparation method thereof.

Background

The sealant is a sealing material with certain cohesiveness and is used for filling a configured gap to play a role of sealing. Has the functions of leakage prevention, water prevention, vibration prevention, sound insulation, heat insulation and the like. It is made up by using dry or non-dry viscous material of asphalt, natural resin or synthetic resin, natural rubber or synthetic rubber, etc. as base material, adding inert fillers of talcum powder, clay, carbon black, titanium white powder and asbestos, etc. and adding plasticizer, solvent, solidifying agent and accelerator. It can be divided into three categories of elastic sealant, liquid sealing gasket and sealing putty, and can be widely used for sealing buildings, transportation, electronic instruments and parts.

At present, the existing polymer sealant for precise parts such as electronic instruments and meters has certain corrosion and damage to the contact surface of the precise parts, and is poor in oil resistance and heat resistance and inconvenient to use. In view of the above, we propose a polymer sealant and a preparation method thereof.

Disclosure of Invention

The invention aims to provide a high-molecular sealant and a preparation method thereof, and aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the polymer sealant comprises the following components in parts by mass:

oxidized castor oil: 24 percent; dehydrated castor oil: 15 percent; white carbon black: 1.5 percent; iron oxide red: 24 percent; talc powder: 24 percent; graphite: 11.5 percent.

The invention also provides a preparation method for preparing the polymer sealant, which comprises the following steps:

step 1: placing specified amounts of iron oxide red, talcum powder and graphite in a drier at 100 ℃ for 120 minutes;

step 2: adding specified amount of oxidized castor oil and dehydrated castor oil into a stirring kettle, uniformly stirring, and raising the temperature of the stirring kettle to 50 ℃;

and step 3: adding the dried raw materials in the step 1 into a stirring kettle, and stirring for 100 minutes;

and 4, step 4: and slowly adding a specified amount of white carbon black into the stirring kettle, continuously stirring for 100 minutes, and cooling to obtain the polymer sealant.

Compared with the prior art, the invention has the beneficial effects that: the high-molecular sealant is brownish red liquid sticky paste, is non-drying adhesive type glue, is non-toxic, tasteless, non-drying at normal temperature, has viscoelasticity on the surface film, has lasting quality, can be sealed by ablation at a high temperature of more than 1270 ℃, is resistant to oil, water, superheated steam and various acids and alkalis, has no damage or corrosion to the sealed working surface, has good anti-corrosion protection effect on a precise working surface, is easy to remove, and is convenient for the disassembly and maintenance of equipment.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

The polymer sealant comprises the following components in parts by mass: oxidized castor oil: 24 percent; dehydrated castor oil: 15 percent; white carbon black: 1.5 percent; iron oxide red: 24 percent; talc powder: 24 percent; graphite: 11.5 percent. The high-molecular sealant is brownish red liquid sticky paste, is non-drying adhesive type glue, is non-toxic, tasteless, non-drying at normal temperature, has viscoelasticity on the surface film, has lasting quality, can be sealed by ablation at a high temperature of more than 1270 ℃, is resistant to oil, water, superheated steam and various acids and alkalis, has no damage or corrosion to the sealed working surface, has good anti-corrosion protection effect on a precise working surface, is easy to remove, and is convenient for the disassembly and maintenance of equipment.

Example 2

The preparation method is used for preparing the polymer sealant and comprises the following steps:

step 1: placing specified amounts of iron oxide red, talcum powder and graphite in a drier at 100 ℃ for 120 minutes;

step 2: adding specified amount of oxidized castor oil and dehydrated castor oil into a stirring kettle, uniformly stirring, and raising the temperature of the stirring kettle to 50 ℃;

and step 3: adding the dried raw materials in the step 1 into a stirring kettle, and stirring for 100 minutes;

and 4, step 4: and slowly adding a specified amount of white carbon black into the stirring kettle, continuously stirring for 100 minutes, and cooling to obtain the polymer sealant.

When the macromolecular sealant is used for bonding, the working surface to be sealed is wiped clean so that the working surface is free of impurities and burrs, the macromolecular sealant is uniformly coated on the working surface to be sealed, the coating thickness is 0.5-0.8mm, and overflowing excessive colloid is wiped off, so that the macromolecular sealant can be put into use, is simple and convenient to use, and is firm and reliable in bonding.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (2)

1. The polymer sealant is characterized by comprising the following components in parts by mass:

oxidized castor oil: 24 percent; dehydrated castor oil: 15 percent; white carbon black: 1.5 percent; iron oxide red: 24 percent; talc powder: 24 percent; graphite: 11.5 percent.

2. A method for preparing the polymeric sealant according to claim 1, comprising the steps of:

step 1: placing specified amounts of iron oxide red, talcum powder and graphite in a drier at 100 ℃ for 120 minutes;

step 2: adding specified amount of oxidized castor oil and dehydrated castor oil into a stirring kettle, uniformly stirring, and raising the temperature of the stirring kettle to 50 ℃;

and step 3: adding the dried raw materials in the step 1 into a stirring kettle, and stirring for 100 minutes;

and 4, step 4: and slowly adding a specified amount of white carbon black into the stirring kettle, continuously stirring for 100 minutes, and cooling to obtain the polymer sealant.