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Anti-seizing and anti-loosening glue for stainless steel threaded connection and preparation method thereof

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

Active Publication Date: 2017-11-07
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-seizing and anti-loosening glue for stainless steel threaded connection and preparation method thereof
  • Anti-seizing and anti-loosening glue for stainless steel threaded connection and preparation method thereof
  • Anti-seizing and anti-loosening glue for stainless steel threaded connection and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0023] Step 1: Synthesis and adjustment of PMM

[0024] Fix the thermometer in a 250mL three-necked reaction flask;

[0025] Add acrylates (methyl methacrylate, methyl acrylate, butyl acrylate) into the reaction kettle at a ratio of 3: 2: 1 (weight ratio) 30 g, and add peroxide initiator (BPO peroxide) Dibenzoyl oxide (0.15%), start the stirrer to dissolve it and stir it evenly, and then heat to 60-65 °C. After the reaction reaches about 7 hours, the viscosity of the product in the reactor increases, resembling glycerin , Continue the heating reaction, carry out aging for 12 hours, and lower 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 solution A’ is obtained

[0028] But when...

Embodiment 2

[0043] An anti-seize and anti-loosening glue for stainless steel threaded connection, comprising A and B, wherein A is a PMMA bonding solution, B is an organic amine solvent (N-ethylethylenediamine), and the A and B solutions are in accordance with the quality Mix evenly at a ratio of 3:1;

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

[0045] The PMMA adhesive liquid also includes 1% coupling agent (K550), 1% cyanoacrylate and 5% silicone grease according to mass percentage.

[0046] A method for preparing anti-seize and anti-loosening glue for stainless steel threaded connection, including the following steps:

[0047] Add the enoic acid esters to the reactor, add the initiator BP...

Embodiment 3

[0049] An anti-seize and anti-loosening glue for stainless steel threaded connection, comprising A and B, said A is PMMA bonding liquid, B is organic amine solvent (N,N-dimethylaniline), and said A and B solutions are in accordance with The mass ratio of 3:1 is mixed evenly;

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

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

[0052] A method for preparing anti-seize and anti-loosening glue for stainless steel threaded connection, including the following steps:

[0053] Add the olefinic acid esters to the re...

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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, and particularly relates to an anti-seize 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, the material has low hardness and high viscosity, and is prone to adhesion and wear. The problem of seizure is common. This problem occurs both during installation and removal of bolts. [0004] The main reason for the seizure of stainless steel threads is: during the pre-tightening proces...

Claims

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Application Information

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Patent Type & Authority Applications(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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