CN105176489A

CN105176489A - Sealing adhesive and preparation method thereof

Info

Publication number: CN105176489A
Application number: CN201510566823.5A
Authority: CN
Inventors: 苏建丽
Original assignee: Qingdao Winchance Technology Co ltd
Current assignee: Qingdao Winchance Technology Co ltd
Priority date: 2015-09-08
Filing date: 2015-09-08
Publication date: 2015-12-23

Abstract

The invention discloses sealing glue and a preparation method thereof, and belongs to the technical field of sealing materials. The sealing adhesive comprises the following raw materials in parts by weight: the feed comprises the following raw materials in parts by weight: 30-40 parts of modified epoxy resin, 10-20 parts of solvent gasoline, 10-20 parts of alpha-naphthylamine, 50-60 parts of asphalt, 10-20 parts of nonylphenol polyoxyethylene ether and 1-5 parts of nano zinc oxide; the invention also provides a preparation method of the sealing adhesive. The invention has good cohesiveness, sealing property, creep resistance, aging resistance, high temperature stability and temperature sensitivity under the synergistic cooperation of modified epoxy resin, solvent gasoline, alpha-naphthylamine, asphalt, nonylphenol polyoxyethylene ether and nano zinc oxide, and has the advantages of no deformation, no flow, good adhesiveness at low temperature, no cracking, easy coating, no peculiar smell and long service life.

Description

Sealing adhesive and preparation method thereof

Technical Field

The invention belongs to the technical field of sealing materials, and particularly relates to a sealing compound and a preparation method thereof.

Background

With the advancement of science and technology and the rapid development of information, the battery technology has also been developed and advanced unprecedentedly. The main components of the electrolyte of the zinc-manganese battery used by people in daily production and life are ammonium chloride, zinc chloride and water which are present according to a certain proportion. If the sealing performance of the battery is poor, water in the electrolyte is volatilized to influence the normal operation of the battery, so that the service life of the battery is influenced; meanwhile, oxygen in the air also enters the battery to oxidize the zinc, so that the service life of the battery is further shortened. Therefore, the sealing plays an important role in the battery, and the quality of the sealing directly determines the quality of the zinc-manganese battery.

At present, a sealing agent is generally adopted as a battery sealing material in the battery industry, the sealing agent mainly comprises two series of epoxy resin and polybutylene, and although the battery sealing agent of the epoxy resin series has good bonding strength, the battery sealing agent also has the defects of high brittleness, poor impact resistance and low peeling strength; the polybutene sealing glue has amorphous molecular structure and no polarity, and has certain cohesiveness, but also weak adhesion, small cohesion, low tensile strength, easy cohesive failure of glue layer and complete loss of adhesion under the action of external force.

Disclosure of Invention

The invention provides sealing glue and a preparation method thereof, which solve the problem that the battery sealing glue in the prior art has poor cohesiveness and cannot adapt to the change of the battery temperature, so that the service life of the battery is shortened.

The invention discloses a sealing adhesive, which is mainly realized by the following technical scheme: the feed comprises the following raw materials in parts by weight: 30-40 parts of modified epoxy resin, 10-20 parts of solvent gasoline, 10-20 parts of alpha-naphthylamine, 50-60 parts of asphalt, 10-20 parts of nonylphenol polyoxyethylene ether and 1-5 parts of nano zinc oxide.

The invention relates to a preparation method of sealing glue, which is mainly realized by the following technical scheme: the method comprises the following steps: 1) Taking nonylphenol polyoxyethylene ether, adding alpha-naphthylamine at 30-100 ℃, and stirring to form a mixed solution; 2) Heating asphalt at 150-200 ℃ for 2-5h, adding the mixed solution obtained in the step 1), the modified epoxy resin and the nano zinc oxide, and uniformly stirring to obtain a crude product; 3) When the temperature of the crude product obtained in the step 2) is cooled to 80-120 ℃, adding solvent gasoline into the crude product, stirring the mixture evenly, filtering the mixture, and packaging the mixture to obtain the product.

The invention has the beneficial effects that: the sealing compound for the battery is prepared by heating, vulcanizing and coagulating the modified epoxy resin, the solvent gasoline, the alpha-naphthylamine, the asphalt, the nonylphenol polyoxyethylene ether and the nano zinc oxide under the synergistic effect of the modified epoxy resin, the solvent gasoline, the alpha-naphthylamine, the asphalt, the nonylphenol polyoxyethylene ether and the nano zinc oxide, and has good cohesiveness, sealing property and creep resistance; the sealing glue for the battery has the advantages of aging resistance, high-temperature stability and temperature sensitivity, no deformation and no flowing at high temperature, good adhesion at low temperature, no cracking, easy coating, no peculiar smell and long service life.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to specific embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.

The sealing adhesive comprises the following raw materials in parts by weight: 30-40 parts of modified epoxy resin, 10-20 parts of solvent gasoline, 10-20 parts of alpha-naphthylamine, 50-60 parts of asphalt, 10-20 parts of nonylphenol polyoxyethylene ether and 1-5 parts of nano zinc oxide.

The preparation method of the sealing adhesive comprises the following steps: 1) Adding alpha-naphthylamine into nonylphenol polyoxyethylene ether at 30-100 ℃, and stirring to form a mixed solution; 2) Heating asphalt at 150-200 ℃ for 2-5h, adding the mixed solution obtained in the step 1), the modified epoxy resin and the nano zinc oxide, and uniformly stirring to obtain a crude product; 3) When the temperature of the crude product obtained in the step 2) is cooled to 80-120 ℃, adding solvent gasoline into the crude product, stirring the mixture evenly, filtering the mixture, and packaging the mixture to obtain the product.

Example one

The invention discloses a preparation method of sealing glue, which comprises the following steps: 1) Taking 10 parts by weight of nonylphenol polyoxyethylene ether, adding 10 parts by weight of alpha-naphthylamine at the temperature of 30 ℃, and stirring to form a mixed solution; 2) Heating 50 parts by weight of asphalt at 150 ℃ for 2 hours, adding the mixed solution obtained in the step 1), 30 parts by weight of modified epoxy resin and 1 part by weight of nano zinc oxide, and uniformly stirring to obtain a crude product; 3) And (3) when the temperature of the crude product obtained in the step 2) is cooled to 80-120 ℃, adding 10 parts by weight of solvent gasoline into the crude product, uniformly stirring, filtering and packaging to obtain the product.

Example two

The preparation method of the sealing adhesive comprises the following steps: 1) Taking 15 parts by weight of nonylphenol polyoxyethylene ether, adding 15 parts by weight of alpha-naphthylamine at 60 ℃, and stirring to form a mixed solution; 2) Heating 55 parts by weight of asphalt at 180 ℃ for 3.5 hours, adding the mixed solution obtained in the step 1), 35 parts by weight of modified epoxy resin and 3 parts by weight of nano zinc oxide, and uniformly stirring to obtain a crude product; 3) And (3) when the temperature of the crude product obtained in the step 2) is cooled to 100 ℃, adding 15 parts by weight of solvent gasoline into the crude product, uniformly stirring, filtering and packaging to obtain the product.

30-40 parts of modified epoxy resin, 10-20 parts of solvent gasoline, 10-20 parts of alpha-naphthylamine, 50-60 parts of asphalt, 10-20 parts of nonylphenol polyoxyethylene ether and 1-5 parts of nano zinc oxide

EXAMPLE III

The preparation method of the sealing adhesive comprises the following steps: 1) Taking 20 parts by weight of nonylphenol polyoxyethylene ether, adding 20 parts by weight of alpha-naphthylamine at 100 ℃, and stirring to form a mixed solution; 2) Heating 60 parts by weight of asphalt at 200 ℃ for 5 hours, adding the mixed solution obtained in the step 1), 40 parts by weight of modified epoxy resin and 5 parts by weight of nano zinc oxide, and uniformly stirring to obtain a crude product; 3) And (3) when the temperature of the crude product obtained in the step 2) is cooled to 80-120 ℃, adding 20 parts by weight of solvent gasoline into the crude product, uniformly stirring, filtering and packaging to obtain the product.

The three battery sealing glues obtained in the first to third examples and a certain commercially available battery sealing glue are subjected to performance detection according to a relevant test method of a battery sealing agent SH/T0421-92 petrochemical industry standard, and the test results are shown in Table 1.

Table 1 comparative table of performance test results of sealing compound

Note (1): referring to the method of SH/T0421-92, the test temperature is changed to 45 ℃;

note (2): referring to the method of SH/T0421-92, the test temperature was changed from ambient to-20 ℃ and the test samples were cooled in a freezer at-20 ℃ for 1h.

As can be seen from Table 1, the sealing compound for the battery of the invention meets the requirements of indexes in relevant standards, and the softening point of the sealing compound for the battery is 20-21 ℃; the rotational viscosity at 100 ℃ is 290-300 mPas to ensure that the coating material can not flow down from the zinc cylinder and the carbon rod at the coating temperature; the high-temperature flowing experiment is qualified, which shows that the sealing compound provided by the invention cannot be emitted from the battery when being applied to the battery, and has a good sealing effect; the adhesion rate is more than 95% at-20 ℃, which shows that the adhesive has good adhesion at low temperature and is not easy to crack. Compared with the commercially available battery sealing compound, the sealing compound for the battery has obvious advantages.

Therefore, compared with the prior art, the invention has the beneficial effects that: the sealing compound for the battery is prepared by heating, vulcanizing and coagulating the modified epoxy resin, the solvent gasoline, the alpha-naphthylamine, the asphalt, the nonylphenol polyoxyethylene ether and the nano zinc oxide under the synergistic effect of the modified epoxy resin, the solvent gasoline, the alpha-naphthylamine, the asphalt, the nonylphenol polyoxyethylene ether and the nano zinc oxide, and has good cohesiveness, sealing property and creep resistance; the sealing glue for the battery has the advantages of aging resistance, high-temperature stability and temperature sensitivity, no deformation and no flowing at high temperature, good adhesion at low temperature, no cracking, easy coating, no peculiar smell and long service life.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The sealing adhesive is characterized by comprising the following raw materials in parts by weight:

30-40 parts of modified epoxy resin, 10-20 parts of solvent gasoline, 10-20 parts of alpha-naphthylamine, 50-60 parts of asphalt, 10-20 parts of nonylphenol polyoxyethylene ether and 1-5 parts of nano zinc oxide.

2. The method for preparing sealing compound as claimed in claim 1, comprising the following steps:

1) Adding alpha-naphthylamine into nonylphenol polyoxyethylene ether at 30-100 ℃, and stirring to form a mixed solution;

2) Heating asphalt at 150-200 ℃ for 2-5h, adding the mixed solution obtained in the step 1), the modified epoxy resin and the nano zinc oxide, and uniformly stirring to obtain a crude product;

3) When the temperature of the crude product obtained in the step 2) is cooled to 80-120 ℃, adding solvent gasoline into the crude product, stirring the mixture evenly, filtering the mixture, and packaging the filtered mixture to obtain the product.