CN111021068B - Impregnation treatment technology for impregnated aramid fiber ropes for polyurethane synchronous belt - Google Patents
Impregnation treatment technology for impregnated aramid fiber ropes for polyurethane synchronous belt Download PDFInfo
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- CN111021068B CN111021068B CN201911364424.5A CN201911364424A CN111021068B CN 111021068 B CN111021068 B CN 111021068B CN 201911364424 A CN201911364424 A CN 201911364424A CN 111021068 B CN111021068 B CN 111021068B
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
- D06M15/572—Reaction products of isocyanates with polyesters or polyesteramides
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/34—Polyamides
- D06M2101/36—Aromatic polyamides
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention creatively provides a dipping treatment technology of a gum dipping aramid cord for a polyurethane synchronous belt, which not only can effectively solve the problem of effective adhesion between aramid fiber, a gum dipping film and polyurethane, but also can fill the gap between the cord and the polyurethane by controlling the moisture content to achieve the purpose of reducing bubbles.
Description
Technical Field
The invention belongs to the field of aramid fiber rope dipping treatment, and particularly relates to a dipping treatment technology of a dipped aramid fiber rope for a polyurethane synchronous belt.
Background
The gum dipping aramid fiber cord is one of main framework materials of the polyurethane synchronous belt and is used for enhancing the strength and the durability of the polyurethane synchronous belt. Because the gum dipping film formed by the special treating agent is arranged on the reinforced gum dipping aramid fiber rope, the adhesion between the fiber and the matrix of the polyurethane product can be improved, the gum dipping film plays a role in protecting the aramid fiber protofilament, and the durability of the polyurethane product is further improved.
Generally, the adhesion between the dipped aramid cord and the polyurethane is mainly completed by a dipped film, wherein one end of the dipped film is bonded with aramid fibers, and the other end of the dipped film is bonded with the polyurethane to form an aramid-glue film-polyurethane bridging mode. However, in the production process of the polyurethane synchronous belt, bubbles are easily generated due to moisture, strand stranding gaps, base material filling gaps and the like, so that the yield is reduced, and great troubles are brought to polyurethane synchronous belt manufacturers.
The prior art is mostly improved from a polyurethane synchronous belt production process, and the problem cannot be thoroughly solved.
The invention creatively provides a dipping treatment technology of a gum dipping aramid cord for a polyurethane synchronous belt, which not only can effectively solve the problem of effective adhesion between aramid fiber, a gum dipping film and polyurethane, but also can fill the gap between the cord and the polyurethane by controlling the moisture content to achieve the purpose of reducing bubbles.
Disclosure of Invention
In order to overcome the defects, the invention provides a dipping treatment technology of a gum dipping aramid fiber rope for a polyurethane synchronous belt, which not only can effectively solve the problem of effective adhesion between aramid fiber, a gum dipping film and polyurethane, but also can fill the gap between the rope and the polyurethane by controlling the moisture content to achieve the purpose of reducing bubbles.
In order to solve the problems, the invention firstly provides a group of glue dipping aramid cord treatment liquids and respective preparation methods thereof, and specifically comprises two types of glue dipping aramid cord pretreatment liquids and two bath treatment liquids of glue dipping aramid cords;
the first method is characterized in that a pre-treatment solution for gum dipping aramid fiber ropes comprises the following specific components: 1-25 parts of isocyanate, 5-30 parts of polyester polyol and 100-200 parts of methylbenzene;
preferably, the composition is as follows: 7 parts of isocyanate, 12 parts of polyester polyol and 100 parts of toluene;
the preparation method of the pre-treatment liquid for the gum dipping aramid fiber rope comprises the following steps:
under the condition of normal temperature, adding toluene into a reaction kettle, slowly adding isocyanate while stirring, slowly adding polyester polyol after stirring for 5-10 minutes until the isocyanate is completely dissolved, and stirring for 5-10 minutes until the polyester polyol is completely dissolved to obtain a pre-treatment solution of the dipped aramid fiber cord;
the second kind, the dipping aramid fiber cord two-bath treatment solution, the concrete components are: 10-80 parts of deionized water, 1-50 parts of diethanolamine modified polyurethane, 1-50 parts of sulfonate polyether diol modified polyurethane and 1-50 parts of trihydroxymethyl acrylate modified polyurethane;
preferably, the composition is as follows: 30 parts of deionized water, 20 parts of diethanolamine modified polyurethane, 30 parts of sulfonate polyether glycol modified polyurethane and 10 parts of trihydroxymethyl acrylate modified polyurethane;
the preparation method of the gum dipping aramid fiber rope two-bath treatment liquid comprises the following steps:
adding deionized water into a container under the condition of normal temperature, adding diethanolamine modified polyurethane while stirring, stirring for 1-5 minutes, and uniformly mixing; adding sulfonate polyether glycol modified polyurethane, stirring for 2-8 minutes, and uniformly mixing; adding the trihydroxy methyl acrylate modified polyurethane, stirring for 10 minutes, and completely dissolving to obtain the gum dipping aramid fiber cord two-bath treatment liquid.
Further, the invention also provides a method for preparing the dipped aramid cord by using the treated solution of the dipped aramid cord, and the specific scheme is as follows:
carrying out primary twisting and secondary twisting on the aramid fiber, then passing through a dipping tank filled with pretreatment liquid, and quickly drying through an oven at 200-250 ℃; and (3) dipping the treated yarn in a dipping tank filled with a two-bath treatment solution, and quickly drying the treated yarn in an oven at 100-160 ℃ to dry the treatment agent, so that the dipped aramid fiber rope is obtained.
The invention has the beneficial effects that:
(1) because the pretreatment liquid for the gum dipping aramid fiber rope contains 1-25 parts of isocyanate, 5-30 parts of polyester polyol and 100-200 parts of toluene, the treatment liquid adopts a creative combination mode, so that the prepared gum dipping aramid fiber rope is dried and then deeply penetrates into aramid fibers to form a pretreatment layer with strong chemical activity.
(2) Because the two-bath treatment solution for the dipped aramid fiber rope contains 10-80 parts of deionized water, 1-50 parts of diethanolamine modified polyurethane, 1-50 parts of sulfonate polyether diol modified polyurethane and 1-50 parts of trihydroxymethyl acrylate modified polyurethane, the two-bath dipping layer of the dipped aramid fiber rope and polyurethane form a multilayer structure of aramid fiber-pretreatment glue film-two-bath dipping film-polyurethane, and the layers are highly crosslinked to form a high-strength bonding structure, so that the bonding force between the aramid fiber and the polyurethane is enhanced.
(3) The trihydroxymethyl acrylate modified polyurethane in the gum dipping aramid fiber cord two-bath treatment liquid forms a compact and hydrophobic adhesive film after drying, intermolecular gaps of the adhesive film are extremely small, water molecules cannot penetrate through the adhesive film, the water molecules cannot be attached to the surface of the adhesive film due to the hydrophobicity of the adhesive film, when the aramid fiber cord is dried, the water inside the aramid fiber cord is removed, and at the moment, the aramid fiber can be effectively prevented from absorbing the water in the air due to the existence of the two-bath adhesive film, and the generation of bubbles due to the evaporation of the water in the production process of the polyurethane synchronous belt is prevented.
(4) Meanwhile, the diethanolamine modified polyurethane in the gum dipping aramid fiber cord two-bath treatment solution can be dissolved along with a high-temperature part in the production process of the synchronous belt, so that gaps between cords and gaps between the filler and the cords are filled, and bubbles generated by air existing between materials in the production process of the polyurethane synchronous belt are prevented.
(5) The dipping treatment liquid is used for preparing the gumming aramid fiber rope for the polyurethane synchronous belt, the prepared aramid fiber rope can greatly improve the bonding strength of the aramid fiber rope and polyurethane, and after the aramid fiber hard rope is applied to a polyurethane product, bubbles generated by moisture regain of the rope and gaps among materials are avoided, and the yield and the quality of the production of the polyurethane synchronous belt are improved.
Detailed Description
The technical solution of the present invention is further illustrated by the following specific examples, but the scope of the present invention is not limited thereto:
example 1
Preparing a pre-treatment liquid of the gum dipping aramid fiber rope: taking raw materials, 7 parts of isocyanate, 12 parts of polyester polyol and 100 parts of toluene, adding the toluene into a reaction kettle under the condition of normal temperature, slowly adding the isocyanate while stirring, slowly adding the polyester polyol after stirring for 5 minutes until the isocyanate is completely dissolved, and stirring for 10 minutes until the polyester polyol is completely dissolved, thus obtaining the pre-treatment liquid for the gum dipping aramid fiber cord.
Preparing a two-bath treatment solution for the gum dipping aramid fiber ropes: taking raw materials, 30 parts of deionized water, 20 parts of diethanolamine modified polyurethane, 30 parts of sulfonate polyether glycol modified polyurethane and 10 parts of trihydroxymethyl acrylate modified polyurethane, adding the deionized water into a container under the condition of normal temperature, adding the diethanolamine modified polyurethane while stirring, stirring for 1-5 minutes, uniformly mixing, adding the sulfonate polyether glycol modified polyurethane, stirring for 2-8 minutes, uniformly mixing, adding the trihydroxymethyl acrylate modified polyurethane, stirring for 10 minutes, and completely dissolving to obtain the gum dipping aramid cord two-bath treatment liquid.
After the aramid fiber is subjected to primary twisting and secondary twisting, the aramid fiber is dried by a 220 ℃ oven at a speed of 20-35 meters per minute through a dipping tank filled with a pre-treatment liquid of dipped aramid fiber ropes; and (3) dipping the treated cord in a dipping tank filled with a two-bath treatment solution of the dipped aramid cord, drying the treated cord in an oven at 150 ℃ at a speed of 20-35 m per minute, and drying the treatment agent to obtain the dipped aramid cord.
Example 2
According to the process described in example 1, except that the following formulations were used to prepare a pre-treatment solution for the dipped aramid cord and a two-bath treatment solution for the dipped aramid cord, respectively.
Pre-treatment liquid for gum dipping aramid fiber ropes: 5 parts of isocyanate, 10 parts of polyester polyol and 100 parts of toluene;
treating fluid in a two-bath of the gum dipping aramid fiber cord: 30 parts of deionized water, 30 parts of diethanolamine modified polyurethane, 20 parts of sulfonate polyether glycol modified polyurethane and 10 parts of trihydroxymethyl acrylate modified polyurethane.
Example 3
According to the process described in example 1, except that the following formulations were used to prepare a pre-treatment solution for the dipped aramid cord and a two-bath treatment solution for the dipped aramid cord, respectively.
Preparing a pre-treatment liquid of the gum dipping aramid fiber rope: 8 parts of isocyanate, 6 parts of polyester polyol and 100 parts of toluene;
preparing a two-bath treatment solution for the gum dipping aramid fiber ropes: 50 parts of deionized water, 30 parts of diethanolamine modified polyurethane, 20 parts of sulfonate polyether glycol modified polyurethane and 30 parts of trihydroxymethyl acrylate modified polyurethane.
Test example 1
The test examples tested the T-draw force, water content, number of bubbles in the timing belt, and the yield of the timing belt of examples 1 to 3, and the results are shown in table 1:
TABLE 1
Wherein the polyurethane is standard polyurethane;
the examples 1-3 were tested for performance by the following methods: the T-extraction is tested according to the method of the national standard GB/T31333-2014, and the peeling force is measured according to the method of the national standard GB/T32109-2015.
As shown in table 1, the treated aramid cords obtained in examples 1, 2 and 3 of the present invention have good adhesion to polyurethane, and the yield of the polyurethane synchronous belt is significantly improved, especially in example 1, when the components specified in the scheme are used, each index is at the best level.
Claims (4)
1. The treatment liquid for the dipped aramid cord is characterized by specifically comprising two treatment liquids, namely a pre-treatment liquid for the dipped aramid cord and a two-bath treatment liquid for the dipped aramid cord;
the first method is characterized in that a pre-treatment solution for gum dipping aramid fiber ropes comprises the following specific components: 1-25 parts of isocyanate, 5-30 parts of polyester polyol and 100-200 parts of methylbenzene;
the preparation method of the pre-treatment liquid for the gum dipping aramid fiber rope comprises the following steps:
under the condition of normal temperature, adding toluene into a reaction kettle, slowly adding isocyanate while stirring, slowly adding polyester polyol after stirring for 5-10 minutes until the isocyanate is completely dissolved, and stirring for 5-10 minutes until the polyester polyol is completely dissolved to obtain a pre-treatment solution of the dipped aramid fiber cord;
the second kind, the dipping aramid fiber cord two-bath treatment solution, the concrete components are: 10-80 parts of deionized water, 1-50 parts of diethanolamine modified polyurethane, 1-50 parts of sulfonate polyether diol modified polyurethane and 1-50 parts of trihydroxymethyl acrylate modified polyurethane;
the preparation method of the gum dipping aramid fiber rope two-bath treatment liquid comprises the following steps:
adding deionized water into a container under the condition of normal temperature, adding diethanolamine modified polyurethane while stirring, stirring for 1-5 minutes, and uniformly mixing; adding sulfonate polyether glycol modified polyurethane, stirring for 2-8 minutes, and uniformly mixing; adding the trihydroxy methyl acrylate modified polyurethane, stirring for 10 minutes, and completely dissolving to obtain the gum dipping aramid fiber cord two-bath treatment liquid.
2. The treated fluid of claim 1, wherein the treated fluid comprises 7 parts of isocyanate, 12 parts of polyester polyol and 100 parts of toluene.
3. The treated solution of the dipped aramid cord as claimed in claim 1, wherein the treated solution of the dipped aramid cord in two baths comprises 30 parts of deionized water, 20 parts of diethanolamine modified polyurethane, 30 parts of sulfonate polyether glycol modified polyurethane and 10 parts of trimethylol acrylate modified polyurethane.
4. A method for preparing the impregnated aramid cord by using the treating fluid of the impregnated aramid cord as claimed in claim 1, is characterized in that aramid fibers are subjected to primary twisting and secondary twisting, then pass through an impregnation tank filled with a pretreatment fluid, and are quickly dried by an oven at 200-250 ℃; and (3) dipping the treated yarn in a dipping tank filled with a two-bath treatment solution, and quickly drying the treated yarn in an oven at 100-160 ℃ to dry the treatment agent, so that the dipped aramid fiber rope is obtained.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911364424.5A CN111021068B (en) | 2019-12-26 | 2019-12-26 | Impregnation treatment technology for impregnated aramid fiber ropes for polyurethane synchronous belt |
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| CN201911364424.5A CN111021068B (en) | 2019-12-26 | 2019-12-26 | Impregnation treatment technology for impregnated aramid fiber ropes for polyurethane synchronous belt |
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| CN111021068A CN111021068A (en) | 2020-04-17 |
| CN111021068B true CN111021068B (en) | 2022-04-26 |
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| CN112878046A (en) * | 2020-12-30 | 2021-06-01 | 青岛天邦线业有限公司 | Pretreatment liquid for dipping aramid fiber hard cord and dipping method of aramid fiber hard cord |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013241697A (en) * | 2012-05-21 | 2013-12-05 | Mitsuboshi Belting Ltd | Aramid core wire and transmission belt |
| CN105128965A (en) * | 2015-09-09 | 2015-12-09 | 沈阳化工大学 | Casting polyurethane robot track with framework made of aramid fiber and preparation method thereof |
| CN108589301A (en) * | 2018-05-17 | 2018-09-28 | 北京化工大学 | Sizing agent is as the application of aramid fiber surface modification inorganic agent, aramid fiber-resin composite materials and preparation method |
| CN110067127A (en) * | 2019-03-20 | 2019-07-30 | 青岛中维新材料有限公司 | A kind of preparation method of impregnation aramid fiber short fibre |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5711167B2 (en) * | 2012-02-22 | 2015-04-30 | 三ツ星ベルト株式会社 | Aramid cord and transmission belt |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013241697A (en) * | 2012-05-21 | 2013-12-05 | Mitsuboshi Belting Ltd | Aramid core wire and transmission belt |
| CN105128965A (en) * | 2015-09-09 | 2015-12-09 | 沈阳化工大学 | Casting polyurethane robot track with framework made of aramid fiber and preparation method thereof |
| CN108589301A (en) * | 2018-05-17 | 2018-09-28 | 北京化工大学 | Sizing agent is as the application of aramid fiber surface modification inorganic agent, aramid fiber-resin composite materials and preparation method |
| CN110067127A (en) * | 2019-03-20 | 2019-07-30 | 青岛中维新材料有限公司 | A kind of preparation method of impregnation aramid fiber short fibre |
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