A kind of environment-friendly dipping liquid and preparation method thereof

Abstract

The invention discloses an environment-friendly dipping solution, which comprises the following components in parts by weight: 3-20 parts of blocked isocyanate, 1-5 parts of water-soluble epoxy resin, 40-240 parts of latex, maleic anhydride polybutylene 3-30 parts of alkenes, 65-350 parts of pure water. At the same time, its corresponding preparation method is provided. The dipping solution of the present invention does not contain resorcinol, formaldehyde and its derivatives at all, and the raw materials used are not in the category of hazardous chemicals. According to the requirements of relevant national departments; good results have been achieved in the application of the dipping process of cord fabrics, canvases, and cords made of fibers such as nylon 6, nylon 66, polyester, aramid, and spandex, and the physical properties of the obtained products have reached or even Exceeding the national superior product standard, it solves the replacement problem of "RFL dipping liquid".

Description

technical field

[0001] The invention belongs to the technical field of dipping rubber cord fabrics, canvases, cords and hose yarns, and particularly relates to an environment-friendly dipping solution and a preparation method thereof. Background technique

[0002] At present, nylon 6, nylon 66, polyester, aramid, spandex and other products have been widely used in various fields due to their unique properties. In the process of forming cord fabric, canvas, cord, and spool yarn, the dipping process is a crucial link, which directly affects the quality and performance of the product. At present, according to the characteristics of the material, the existing dipping process mostly adopts "single bath method" or "double bath method", and in the above process, "RFL dipping liquid" is an indispensable dipping raw material, and "RFL dipping liquid" is an indispensable dipping raw material. The phenolic resin formed by resorcinol and formaldehyde in the liquid is also an excellent ...

Examples

Embodiment 1

[0023] An environmentally friendly dipping solution, comprising the following components by weight: 10 parts of blocked isocyanate (20 parts of caprolactam-blocked diphenylmethane diisocyanate aqueous dispersion with a concentration of 50% by mass), water-soluble epoxy resin 3 parts, 139 parts of butyl pyridine latex, 13.6 parts of maleic anhydride polybutadiene, 220 parts of pure water.

[0024] The method for preparing environment-friendly dipping solution, is characterized in that, comprises the following steps:

[0025] At a speed of 200 rpm,

[0026] 1) Add the blocked isocyanate to a part of pure water (100 parts), stir and mix for 30 minutes, then add water-soluble epoxy resin, after stirring and mixing for 60 minutes, add maleic anhydride polybutadiene, stir and mix for 30 minutes, and then add The pyridine latex was stirred and mixed for 60min to obtain a mixture;

[0027] 2) Add the remaining pure water to the mixture in step 1), mix well, and get the dipping solut...

Embodiment 2

[0029] An environmentally friendly dipping solution, comprising the following components by weight: 8.4 parts of blocked isocyanate (16.8 parts of an aqueous dispersion of caprolactam-blocked diphenylmethane diisocyanate with a concentration of 50% by mass), a water-soluble epoxy resin 2.5 parts, 116 parts of butyl pyridine latex, 11.4 parts of maleic anhydride polybutadiene, 175 parts of pure water.

[0030] The method for preparing environment-friendly dipping solution, is characterized in that, comprises the following steps:

[0031] At a speed of 100 rpm,

[0032] 1) Add the blocked isocyanate to a part of pure water (80 parts), stir and mix for 60 minutes, then add water-soluble epoxy resin, after stirring and mixing for 90 minutes, add maleic anhydride polybutadiene, stir and mix for 60 minutes, and then add Pyridine latex was stirred and mixed for 90min to obtain a mixture;

[0033] 2) Add the remaining pure water to the mixture in step 1), mix well, and get the dippi...

Embodiment 3

[0035] An environment-friendly dipping solution, comprising the following components by weight: 3.4 parts of blocked isocyanate (6.8 parts of an aqueous dispersion of caprolactam-blocked diphenylmethane diisocyanate with a concentration of 50% by mass), a water-soluble epoxy resin 1 part, 46.5 parts of butyl pyridine latex, 4.6 parts of maleic anhydride polybutadiene, 70 parts of pure water.

[0036] The preparation method thereof refers to Example 1, wherein the difference is that a part of pure water in step 1) is 40 parts.

technical field

[0001] The invention belongs to the technical field of dipping rubber cord fabrics, canvases, cords and hose yarns, and particularly relates to an environment-friendly dipping solution and a preparation method thereof. Background technique

[0002] At present, nylon 6, nylon 66, polyester, aramid, spandex and other products have been widely used in various fields due to their unique properties. In the process of forming cord fabric, canvas, cord, and spool yarn, the dipping process is a crucial link, which directly affects the quality and performance of the product. At present, according to the characteristics of the material, the existing dipping process mostly adopts "single bath method" or "double bath method", and in the above process, "RFL dipping liquid" is an indispensable dipping raw material, and "RFL dipping liquid" is an indispensable dipping raw material. The phenolic resin formed by resorcinol and formaldehyde in the liquid is also an excellent ...

Examples

Embodiment 1

[0023] An environmentally friendly dipping solution, comprising the following components by weight: 10 parts of blocked isocyanate (20 parts of caprolactam-blocked diphenylmethane diisocyanate aqueous dispersion with a concentration of 50% by mass), water-soluble epoxy resin 3 parts, 139 parts of butyl pyridine latex, 13.6 parts of maleic anhydride polybutadiene, 220 parts of pure water.

[0024] The method for preparing environment-friendly dipping solution, is characterized in that, comprises the following steps:

[0025] At a speed of 200 rpm,

[0026] 1) Add the blocked isocyanate to a part of pure water (100 parts), stir and mix for 30 minutes, then add water-soluble epoxy resin, after stirring and mixing for 60 minutes, add maleic anhydride polybutadiene, stir and mix for 30 minutes, and then add The pyridine latex was stirred and mixed for 60min to obtain a mixture;

[0027] 2) Add the remaining pure water to the mixture in step 1), mix well, and get the dipping solut...

Embodiment 2

[0029] An environmentally friendly dipping solution, comprising the following components by weight: 8.4 parts of blocked isocyanate (16.8 parts of an aqueous dispersion of caprolactam-blocked diphenylmethane diisocyanate with a concentration of 50% by mass), a water-soluble epoxy resin 2.5 parts, 116 parts of butyl pyridine latex, 11.4 parts of maleic anhydride polybutadiene, 175 parts of pure water.

[0030] The method for preparing environment-friendly dipping solution, is characterized in that, comprises the following steps:

[0031] At a speed of 100 rpm,

[0032] 1) Add the blocked isocyanate to a part of pure water (80 parts), stir and mix for 60 minutes, then add water-soluble epoxy resin, after stirring and mixing for 90 minutes, add maleic anhydride polybutadiene, stir and mix for 60 minutes, and then add Pyridine latex was stirred and mixed for 90min to obtain a mixture;

[0033] 2) Add the remaining pure water to the mixture in step 1), mix well, and get the dippi...

Embodiment 3

[0035] An environment-friendly dipping solution, comprising the following components by weight: 3.4 parts of blocked isocyanate (6.8 parts of an aqueous dispersion of caprolactam-blocked diphenylmethane diisocyanate with a concentration of 50% by mass), a water-soluble epoxy resin 1 part, 46.5 parts of butyl pyridine latex, 4.6 parts of maleic anhydride polybutadiene, 70 parts of pure water.

[0036] The preparation method thereof refers to Example 1, wherein the difference is that a part of pure water in step 1) is 40 parts.

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