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Anaerobic adhesive composition, and anaerobic adhesive and preparation method thereof

An anaerobic adhesive and composition technology, applied in the direction of adhesive types, adhesive additives, ester copolymer adhesives, etc., can solve the problems of affecting the initial curing time, waste, inability to secondary adjustment, etc. Durable, simple to prepare, and damage-reducing effects

Inactive Publication Date: 2018-12-11
BYD CO LTD
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] ① The initiator, accelerator, and co-accelerator are in a certain equilibrium state in the determined formula: increasing the amount of the initiator can reduce the initial curing time, but it will significantly affect the main mechanical properties of the anaerobic adhesive, such as torque performance and storage stability. Influence; the accelerator can adjust the initial solid time but affects the stability; the co-accelerator can adjust the stability but affects the initial solid time;
[0005] ② After the preparation is completed, the anaerobic adhesive cannot be adjusted twice when the initial curing time is too long, resulting in waste

Method used

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preparation example Construction

[0014] In the present invention, the acrylate monomer can be self-made, and the preparation method includes: one or more of stearic acid, organic silicic acid, bisphenol A epoxy resin, lauric acid, and tricyclodecanedicarboxylic acid One or more of methylol acrylate, triethylene glycol, trimethylolpropane, pentaerythritol, polyether diol, polyester diol, polymerization inhibitor, and catalyst are put into the reactor and mixed , after the reaction. Preferably, the polymerization inhibitor is one or more of hydroquinone, p-hydroxyanisole, and 2,6-di-tert-butyl-p-cresol; the catalyst is 4-dimethylaminopyridine One or more of (DMAP), chloroplatinic acid, 1,3-divinyl-1,1,3,3-tetramethyldisiloxane platinum. Preferably, the reaction temperature is 40-110° C., and the reaction time is 2-10 h.

[0015] The acrylate monomer resin can also be obtained commercially, preferably, bisphenol A epoxy methacrylate, silicone modified acrylate, tricyclodecane dimethacrylate, polyurethane metha...

Embodiment 1~6

[0035]1) Configure stearic acid and hydroxymethyl acrylate in a weight ratio of 3:7 to form a matrix resin. Put 100 parts by weight of matrix resin standard and 0.01 parts by weight of hydroquinone into a power reactor, mix at 70°C for 30 minutes, add 0.07 parts by weight of DMAP and react for 150 minutes, and wait to cool to 50°C to obtain acrylate monomers. The number average molecular weight of cyclodecane methacrylate is not higher than 1000.

[0036] 2) Preparation of compound acid: mix maleic acid, ascorbic acid, 1,2-phthalic acid-2,2-dimethyl-1-(1-methylethyl)-3-(isobutyryloxy)propane Mix at least two of phenylmethyl ester and methacrylic acid, stir evenly at 50°C, and cool to room temperature. The specific components and dosage are shown in Table 1.

[0037] 3) Preparation of anaerobic adhesive: Add the acrylate monomer, initiator, accelerator, co-accelerator, tackifier, and compound acid prepared in step 1 into the mixer, stir at 80°C for 2 hours, and wait to cool t...

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Abstract

The present invention relates to an anaerobic adhesive composition, which comprises an acrylate monomer resin, an initiator, an accelerator, an auxiliary accelerator, a tackifier and a composite acid,wherein the composite acid is the mixed acid at least containing two materials selected from maleic acid, ascorbic acid, 1,2-phthalic acid-2,2-dimethyl-1-(1-methylethyl)-3-(isobutyryloxy)propyl benzyl ester, acrylic acid, methacrylic acid, naphthenic acid and isocyanic acid. According to the present invention, the anaerobic adhesive composition is added with the composite acid, such that the initial setting time of the anaerobic adhesive can be effectively reduced, and the adverse effect cannot be generated on the storage stability, the torque strength and other performances of the product. The invention further provides an anaerobic adhesive prepared from the anaerobic adhesive composition, and a preparation method of the anaerobic adhesive.

Description

technical field [0001] The invention relates to an anaerobic adhesive composition, an anaerobic adhesive and a preparation method thereof, belonging to the field of adhesives. Background technique [0002] Anaerobic adhesives are also known as anaerobic adhesives, anaerobic adhesives, thread adhesives, and mechanical adhesives. It is a one-component sealing adhesive made by using the principle of oxygen to free radical inhibition, which can be used for both bonding and sealing. When the glued surface is isolated from the air and catalyzed, it can be quickly polymerized and solidified at room temperature. [0003] The initial solidification time of anaerobic adhesives is mainly regulated by initiators, accelerators and co-accelerators; storage stability is mainly regulated by initiators and accelerators. If the initial solidification time is regulated by initiators and accelerators, the following problems usually exist: [0004] ① The initiator, accelerator, and co-acceler...

Claims

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Application Information

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IPC IPC(8): C09J133/14C09J11/06
CPCC09J133/14C08K5/092C08K5/12C08K5/1535C09J11/06
Inventor 陈琅林信平张玲玲
Owner BYD CO LTD
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