Curing agent composition for epoxy mortar and preparation method of curing agent composition

An epoxy mortar and curing agent technology, applied in the field of building materials, can solve the problems of PVC engineering hidden dangers, neoprene rubber can not adapt to concrete deformation joint deformation, PVC engineering failure and other problems, achieve durability and strength, and realize repair and waterproof , the effect of excellent bonding ability

Active Publication Date: 2019-05-17
四川凯伦新材料有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0002] At present, the mainstream product for pasting PVC (polyvinyl chloride) is neoprene, but it contains a lot of solvents, and the smell is strong when pasting. At the same time, if the neoprene is not evenly painted, after pasting PVC, it is easy to appear hollowing and cause project failure. At the same time, neoprene rubber cannot adapt to the deformation of concrete deformation joints, resulting in hidden dangers in PVC engineering
[0003] At present, in the prior art, epoxy mortar is also used to treat bridge expansion joints or concrete expansion joint structures, such as Chinese invention patent CN105541180A, which uses diamine D2000 and D230 as an epoxy resin curing agent after mixing, although it can make the prepared Epoxy mortar has certain flexibility and can absorb impact stress, but for PVC substrates such as PVC waterproof membranes, the adhesion is poor, and it is difficult to firmly paste PVC waterproof membranes on the concrete substrate, and with the concrete expansion joints Deformation, the PVC waterproof membrane is easy to fall off, which leads to the failure of the PVC project

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  • Curing agent composition for epoxy mortar and preparation method of curing agent composition

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[0031] Also provide a kind of preparation method of the above-mentioned curing agent composition for epoxy mortar simultaneously, described preparation method comprises the steps:

[0032] (1) Preparation of modified polyetheramine: first react the polyetheramine curing agent, alkylphenol and 2,4,6-tris(dimethylaminomethyl)phenol to make an intermediate, then add benzyl alcohol reaction to make the modified polyetheramine;

[0033] (2) Preparation of modified fatty amine: reacting the octyl glycidyl ether and the triethylenetetramine to prepare the modified fatty amine;

[0034] (3) Weigh the modified polyether amine prepared in step (1) and the modified fatty amine prepared in step (2) according to the formula, and mix them to prepare the curing agent composition for the epoxy mortar.

[0035] According to a specific aspect of the present invention, above-mentioned curing agent composition is applied in the epoxy mortar as follows:

[0036] The raw materials of the epoxy mo...

Embodiment 1

[0052] This embodiment provides a curing agent composition for epoxy mortar, which is composed of modified polyetheramine (23 parts) and modified fatty amine (20 parts);

[0053] Wherein, the modified polyetheramine is obtained by the following method: the modified polyetheramine is reacted with polyetheramine curing agent, alkylphenol and 2,4,6-tris(dimethylaminomethyl)phenol It is produced by reacting with benzyl alcohol; specifically, pour polyetheramine 230 (50 parts) into the reaction kettle, stir at 300-500r / min at room temperature, and add nonylphenol (30 parts) and 2,4,6-tris(dimethylaminomethyl)phenol (10 parts), react for 1.5 hours, then add benzyl alcohol (10 parts), heat up to 55°C, continue to react for 1.5 hours and stop heating, vacuumize to 1KPa Next, extract volatile matter to make modified polyetheramine;

[0054] The modified fatty amine is made by reacting octyl glycidyl ether and triethylenetetramine; specifically, triethylenetetramine (1mol) is put into ...

Embodiment 2

[0064] This embodiment provides a curing agent composition for epoxy mortar, which is basically the same as in Embodiment 1, the only difference is that the modified polyetheramine is obtained by the following method: the modified polyetheramine is made of polyetheramine It is made by reacting curing agent, alkylphenol and 2,4,6-tris(dimethylaminomethyl)phenol and then reacting with benzyl alcohol; specifically, pour polyetheramine 400 (45 parts) into the reaction kettle , stirring at a speed of 300-500r / min at room temperature, adding dodecylphenol (32 parts) and 2,4,6-tris(dimethylaminomethyl)phenol (8 parts) during stirring, and reacting for 2 hours , then add benzyl alcohol (15 parts), heat up to 58°C, continue the reaction for 2 hours and stop heating, vacuumize to below 1KPa, extract volatile matter, and make modified polyetheramine.

[0065] The method that is applied to epoxy mortar is the same as embodiment 1.

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Abstract

The invention discloses curing agent composition for epoxy mortar and a preparation method of the curing agent composition. The curing agent composition is prepared from modified polyether amine and modified aliphatic amine in the feeding mass ratio being 0.8-2.0:1, wherein modified polyether amine is prepared from a polyether amine curing agent, alkylphenol and tris(dimethylaminomethyl)phenol bya reaction and a reaction with benzyl alcohol; modified aliphatic amine is prepared from 2-ethylhexyl glycidyl ether and triethylenetetramine by a reaction. The preparation method comprises the following steps: modified polyether amine and modified aliphatic amine are prepared respectively firstly and then mixed in the formula ratio, and the curing agent composition is prepared. Compared with theconventional curing agent in the prior art, the curing agent composition can endow the epoxy mortar and PVC with quite good adhesive strength and further has excellent mechanical properties, durability and application property, and can adapt to dynamic deformation of concrete.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a curing agent composition for epoxy mortar and a preparation method thereof. Background technique [0002] At present, the mainstream product for pasting PVC (polyvinyl chloride) is neoprene, but it contains a lot of solvents, and the smell is strong when pasting. At the same time, if the neoprene is not evenly painted, after pasting PVC, it is easy to appear hollowing and cause project failure. At the same time, neoprene rubber cannot adapt to the deformation of concrete deformation joints, resulting in hidden dangers in PVC engineering. [0003] At present, in the prior art, epoxy mortar is also used to treat bridge expansion joints or concrete expansion joint structures, such as Chinese invention patent CN105541180A, which uses diamine D2000 and D230 as an epoxy resin curing agent after mixing, although it can make the prepared Epoxy mortar has certain flexibili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/50C08G65/00C04B24/28C07C213/04C07C217/08
Inventor 张国城黄亮邓居兵陈斌姚壮志余志勇石小成
Owner 四川凯伦新材料有限公司
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