Anti-seizure and anti-loosening glue for stainless steel thread connection and preparation method thereof

A threaded connection, stainless steel technology, applied in the direction of adhesives, non-polymer adhesive additives, non-polymer organic compound adhesives, etc., to prevent bolt loosening, prevent direct contact wear, and good bonding characteristics

Active Publication Date: 2020-03-24
NANJING ZHONGCHE PUZHEN URBAN RAIL VEHICLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a contradiction between the anti-seizure and anti-loosening of threaded connections.

Method used

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  • Anti-seizure and anti-loosening glue for stainless steel thread connection and preparation method thereof
  • Anti-seizure and anti-loosening glue for stainless steel thread connection and preparation method thereof
  • Anti-seizure and anti-loosening glue for stainless steel thread connection and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0023] The first step: synthesis and adjustment of PMM

[0024] In the 250mL three-necked reaction flask, fix the thermometer;

[0025] Acrylic acid esters (methyl methacrylate, methyl acrylate, butyl acrylate) are added to 30 g of the reaction kettle according to the ratio (weight ratio) of 3: 2: 1, and the peroxide initiator (BPO over Dibenzoyl oxide) (0.15%), start the agitator to dissolve and stir evenly, then heat to 60-65 °C, after the reaction reaches about 7 hours, the product in the reactor becomes more viscous, similar to glycerin , continue to heat the reaction, carry out aging for 12 hours, and cool down to room temperature to obtain a white transparent acrylate copolymer.

[0026] Add 120 mL of acetone and stir with a glass rod. After about 3-5 hours, a 20% concentration of PMM solution A is obtained.

[0027] Take 30 g of commercially available PMMA powder, add 120 mL of acetone, and stir with a glass rod. After about 3-5 hours, a 20% concentration of PMM solut...

Embodiment 2

[0043]A kind of anti-seizure and anti-loosening glue for stainless steel thread connection, including A and B, said A is PMMA bonding liquid, B is an organic amine solvent (N-ethylethylenediamine), and said A and B solutions are according to the quality Mix evenly at a ratio of 3:1;

[0044] The PMMA bonding liquid includes: acrylates (including methyl methacrylate, methyl acrylate and butyl acrylate in a weight ratio of 3:2:1), initiator BPO dibenzoyl peroxide substance and solvent (acetone), wherein the mass volume ratio of acrylates and solvent (acetone) is 30g:120ml, and the mass percentage of the initiator BPO dibenzoyl peroxide in the PMMA bonding liquid is 0.10% ;

[0045] The PMMA bonding liquid also includes 1% coupling agent (K550), 1% cyanoacrylate and 5% silicone grease in terms of mass percentage.

[0046] A preparation method of anti-seizure and anti-loosening glue for stainless steel threaded connections, comprising the following steps:

[0047] Add the enola...

Embodiment 3

[0049] A kind of anti-seizure and anti-loosening glue for stainless steel thread connection, including A and B, said A is PMMA bonding liquid, B is an organic amine solvent (N,N-dimethylaniline), and said A and B solutions are according to The mass ratio is 3:1 and mixed evenly;

[0050] The PMMA bonding liquid includes: acrylates (including methyl methacrylate, methyl acrylate and butyl acrylate in a weight ratio of 3:2:1), initiator BPO dibenzoyl peroxide substance and solvent (toluene), wherein the mass volume ratio of acrylates and solvent (toluene) is 30g: 120ml, and the mass percentage of the initiator BPO dibenzoyl peroxide in the PMMA bonding liquid is 0.15% ;

[0051] The PMMA bonding liquid also includes 2% coupling agent (K550), 3% cyanoacrylate, 10% epoxy resin and 8% silicone grease according to mass percentage.

[0052] A preparation method of anti-seizure and anti-loosening glue for stainless steel threaded connections, comprising the following steps:

[0053...

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PUM

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Abstract

The invention discloses an anti-seizing and anti-loosening glue for stainless steel threaded connection and a preparation method thereof. The preparation method comprises the following steps: adding olefine esters into a reaction kettle, adding BPO dibenzoyl peroxide, stirring and dissolving, and then heating till the viscose of the product is increased, continuing heating for ageing and cooling to room temperature, thereby acquiring a white transparent olefine ester copolymer; adding acetone and stirring, thereby acquiring a PMM solution in concentration of 20%; taking the PMM solution, adding silicone grease and stirring, and then adding coupling reagent, cyanoacrylate and epoxy resin and uniformly stirring, thereby acquiring a PMMA bonding solution; mixing the PMMA bonding solution and an organic amine solvent at ratio, thereby acquiring the glue. An organic polymer silicate film is formed between the threads by the organic silicide contained in the glue, the direct contact and abrasion of the threads can be prevented and the anti-seizing purpose can be achieved. The mixture of methacrylate and acrylics contained in the glue has an excellent bonding characteristic and can prevent the bolt from loosening.

Description

technical field [0001] The invention belongs to the technical field of glue, in particular to an anti-seizure and anti-loosening glue for stainless steel threaded connections and a preparation method thereof. Background technique [0002] As a connection method, threaded connection is widely used in rolling stock and other fields because of its convenient disassembly and sufficient connection rigidity. There are also many places where stainless steel threaded connections are used in subway vehicles, such as stainless steel bolts, nuts, stainless steel screws, and stainless steel pipe joints. [0003] For stainless steel threaded connections, due to the characteristics of stainless steel materials, the material has low hardness and high viscosity, and is prone to adhesive wear, etc., and there is a common problem of seizure. This problem occurs both during installation and removal of bolts. [0004] The main reason for the seizure of stainless steel threads is that during t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J4/04C09J4/06C09J11/06C08F220/14C08F220/18
CPCC08F220/14C09J4/06C09J11/06C08F220/1804
Inventor 魏培欣敖平许一源郑云昊王小杰张宇宗艳
Owner NANJING ZHONGCHE PUZHEN URBAN RAIL VEHICLE CO LTD
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