Halogen-free flame-retardant finishing agent for sunshade fabric and preparation method thereof

Abstract

The invention discloses a halogen-free flame-retardant finishing agent for a sunshade fabric and a preparation method of the halogen-free flame-retardant finishing agent. The invention relates to a halogen-free flame-retardant finishing agent for a sunshade fabric. The halogen-free flame-retardant finishing agent comprises the following components in percentage by weight: 3-7% of titanium dioxide, 7-10% of polyethylene glycol 200, 5-8% of diammonium hydrogen phosphate, 4-6% of hydroxyethyl methylacrylate, 6-10% of hydroxy calcium phosphate, 5-8% of hyperbranched polyester and the balance of water. The invention aims to solve the technical problems of toxicity of a halogen-containing flame retardant, large filling amount of an inorganic flame-retardant finishing agent, compatibility of a phosphorus-based flame retardant and the like existing in an existing flame-retardant finishing agent system.

Description

Technical Field

[0001] The present invention belongs to the field of textile finishing, and relates to a halogen-free flame retardant finishing agent for sunshade fabrics and a preparation method thereof. Background Art

[0002] In recent years, with the rapid economic development and the transformation and upgrading of the textile industry, not only has the sales volume of textiles continued to increase, but the functional requirements for textiles have also been constantly changing. For example, in the fields of clothing and decorative textiles, textiles with flame retardant properties play a crucial role in reducing casualties caused by accidents such as fires caused by textiles. In the fields of fire protection, aerospace, military, etc., the requirements for the fire protection performance of textiles are also getting higher and higher. In the flame retardant finishing of existing textiles, textiles mainly based on natural fiber-based fabrics are mainly carried out by post-finishing, that is, adding flame retardant finishing agents. The flame retardant finishing agents used mainly include halogen-containing flame retardant finishing agents, inorganic flame retardant finishing agents, nitrogen-based flame retardant finishing agents, and phosphorus-based flame retardant finishing agents. For chemical fiber textiles, in addition to the method of flame retardant post-finishing, the flame retardancy of textiles can also be achieved by blending with flame retardant additives to prepare flame retardant fibers. In addition, for high-performance fiber-based textiles with flame retardant properties, they can be applied to all walks of life without any treatment.

[0003] However, great changes have taken place in the requirements of existing textile flame retardant finishing. There are many problems with existing flame retardant finishing agents. For example, halogen-containing flame retardants are toxic, inorganic flame retardant finishing agents require a large filling amount, and phosphorus-based flame retardants have compatibility problems; Textiles finished with halogen-containing flame retardants in the past are gradually being replaced by textiles finished with new flame retardants such as inorganic flame retardant finishing agents and phosphorus-based flame retardant finishing agents. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: aiming at the problems existing in the existing flame retardant finishing agent system such as the toxicity of halogen-containing flame retardants, the large filling amount of inorganic flame retardant finishing agents, and the compatibility of phosphorus-based flame retardants, the present invention simultaneously provides a halogen-free flame retardant finishing agent. The present invention also provides a preparation method of a halogen-free flame retardant finishing agent for sunshade fabrics.

[0005] A halogen-free flame retardant finishing agent for sunshade fabrics, which comprises the following components in parts by weight:

[0006] Ingredient Content Titanium Dioxide 3-7％ Polyethylene Glycol 200 7-10％ Diammonium Hydrogen Phosphate 5-8％ 2-Hydroxyethyl Methacrylate 4-6％ Calcium Hydroxyphosphate 6-10％ Hyperbranched Polyester 5-8％ Water Remaining Content

[0007] The hyperbranched polyester is a water-based hyperbranched polyester.

[0008] The model of the hyperbranched polyester is H101 or H102.

[0009] A preparation method of a halogen-free flame retardant finishing agent, comprising the following steps:

[0010] S1. Pretreatment of raw materials: Mechanically crush the above-mentioned calcium hydroxyphosphate and diammonium hydrogen phosphate with a pulverizer, and then set aside;

[0011] S2. Weigh the relevant components according to the weight percentages of each component, dissolve them in water and stir for 2 h, and then obtain a flame retardant finishing agent, wherein titanium dioxide is 3-7%, polyethylene glycol 200 is 7-10%, diammonium hydrogen phosphate is 5-8%, 2-hydroxyethyl methacrylate is 4-6%, calcium hydroxyphosphate is 6-10%, hyperbranched polyester H101 is 5-8%, and the remaining content is water.

[0012] The beneficial effects of the present invention are as follows: After the sunshade fabric is finished with the halogen-free flame retardant finishing agent of the present invention, its flame retardant effect is greatly improved. Compared with the prior art, the halogen-free flame retardant provided by the present invention can not only meet the needs of flame retardancy in daily use, but also has relatively practical effects in terms of the cost and effect of the flame retardant. Description of the Drawings

[0013] Figure 1 is the combustion performance diagram of Example 4 of the present invention;

[0014] Figure 2 is the combustion performance diagram of Comparative Example 3 of the present invention. Detailed Embodiments

[0015] In this embodiment, the titanium dioxide used is used as a flame retardant, the polyethylene glycol 200 is used as a dispersant, the diammonium hydrogen phosphate is used to dilute combustible gases, the 2-hydroxyethyl methacrylate is used to improve the surface wear resistance, the calcium hydroxyphosphate is used to decompose and absorb heat to lower the temperature, the hyperbranched polyester is used as a fixing agent, and water is used as a solvent.

[0016] Example 1

[0017] S1. Pretreatment of raw materials: Mechanically crush the calcium hydroxyphosphate and diammonium hydrogen phosphate with a pulverizer, and then set aside;

[0018] S2. Weigh the relevant components according to the weight percentages of each component, dissolve them in water and stir for 2 h, and then obtain a flame retardant finishing agent, wherein titanium dioxide is 3%, polyethylene glycol 200 is 10%, diammonium hydrogen phosphate is 8%, 2-hydroxyethyl methacrylate is 6%, calcium hydroxyphosphate is 11%, hyperbranched polyester H101 is 5%, and the remaining content is water.

[0019] Example 2

[0020] S1. Pretreatment of raw materials: Mechanically crush the calcium hydroxyphosphate and diammonium hydrogen phosphate with a pulverizer, and then set aside;

[0021] S2. Weigh relevant components according to their weight percentages and dissolve them in water, then stir for 2 h to obtain a flame retardant finishing agent, where titanium dioxide is 5%, polyethylene glycol 200 is 8%, diammonium hydrogen phosphate is 6%, 2-hydroxyethyl methacrylate is 5%, calcium hydroxyphosphate is 8%, hyperbranched polyester H102 is 5%, and the remaining content is water.

[0022] Example 3

[0023] S1. Pretreatment of raw materials: Mechanically crush calcium hydroxyphosphate and diammonium hydrogen phosphate with a pulverizer, and then set aside.

[0024] S2. Weigh relevant components according to their weight percentages and dissolve them in water, then stir for 2 h to obtain a flame retardant finishing agent, where titanium dioxide is 7%, polyethylene glycol 200 is 7%, diammonium hydrogen phosphate is 5%, 2-hydroxyethyl methacrylate is 4%, calcium hydroxyphosphate is 6%, hyperbranched polyester H101 is 8%, and the remaining content is water.

[0025] Example 4

[0026] S1. Pretreatment of raw materials: Mechanically crush calcium hydroxyphosphate and diammonium hydrogen phosphate with a pulverizer, and then set aside.

[0027] S2. Weigh relevant components according to their weight percentages and dissolve them in water, then stir for 2 h to obtain a flame retardant finishing agent, where titanium dioxide is 7%, polyethylene glycol 200 is 7%, diammonium hydrogen phosphate is 5%, 2-hydroxyethyl methacrylate is 4%, calcium hydroxyphosphate is 6%, hyperbranched polyester H102 is 8%, and the remaining content is water.

[0028] Comparative Example 1

[0029] S1. Pretreatment of raw materials: Mechanically crush calcium hydroxyphosphate and diammonium hydrogen phosphate with a pulverizer, and then set aside.

[0030] S2. Weigh relevant components according to their weight percentages and dissolve them in water, then stir for 2 h to obtain a flame retardant finishing agent, where polyethylene glycol 200 is 10%, diammonium hydrogen phosphate is 8%, 2-hydroxyethyl methacrylate is 6%, calcium hydroxyphosphate is 10%, and the remaining content is water.

[0031] Comparative Example 2

[0032] S1. Pretreatment of raw materials: Mechanically crush calcium hydroxyphosphate and diammonium hydrogen phosphate with a pulverizer, and then set aside.

[0033] S2. Weigh relevant components according to their weight percentages and dissolve them in water, then stir for 2 h to obtain a flame retardant finishing agent, where polyethylene glycol 200 is 7%, diammonium hydrogen phosphate is 5%, 2-hydroxyethyl methacrylate is 4%, calcium hydroxyphosphate is 6%, and the remaining content is water.

[0034] Comparative Example 3

[0035] S1. Pretreatment of raw materials: Hydroxyapatite and diammonium hydrogen phosphate are mechanically pulverized with a pulverizer and then reserved.

[0036] S2. Weigh relevant components according to the weight percentages of each component and dissolve them in water and stir for 2 h, and then a flame retardant finishing agent is obtained. Among them, polyethylene glycol 200 is 10%, diammonium hydrogen phosphate is 8%, 2-hydroxyethyl methacrylate is 6%, hydroxyapatite is 10%, hyperbranched polyester H101 is 8%, and the remaining content is water.

[0037] Please refer to Figure 2 , and the damage test of Comparative Example 3 is carried out, and its damage is 14 cm. Please refer to Figure 1 , and the damage of the damage test of Example 4 is only 8 cm, and the flame retardant performance is significantly improved.

[0038] The pure polyester sunshade fabric of 100% polyester fiber is respectively immersed in the finishing agents of Examples 1 to 4 and Comparative Examples 1 to 3, soaked at 45 °C for 1.5 h, two dips and two rolls, and the liquor pickup rate is 60%, and then dried at 70 °C, and its limiting oxygen index is measured. The results are as follows:

[0039]

[0040]

[0041] It can be seen from the above table that the limiting oxygen index of the pure polyester sunshade fabric is significantly improved, thus showing its excellent flame retardant performance.

Claims

1. A halogen-free flame retardant finishing agent for sunshade fabrics, characterized in that: The invention comprises the following components in parts by weight:

2. A halogen-free flame retardant finishing agent for sunshade fabrics according to claim 1, characterized in that: The hyperbranched polyester is an aqueous hyperbranched polyester.

3. According to the halogen-free flame retardant finishing agent for sunshade fabrics described in claim 1, it is characterized by: The hyperbranched polyester model is H101 or H102.

4. A method for preparing the halogen-free flame retardant finishing agent for sunshade fabrics according to any one of claims 1 to 3, characterized in that: The steps include: S1. Raw material pretreatment: The above-mentioned calcium hydroxyphosphate and diammonium phosphate are mechanically crushed with a grinder and then set aside; S2. Weigh the relevant components according to the weight percentage of each component and dissolve them in water and stir for 2 hours, then obtain a flame retardant finishing agent, wherein titanium dioxide 3-7%, polyethylene glycol 200 7-10%, diammonium hydrogen phosphate 5-8%, hydroxyethyl methacrylate 4-6%, hydroxy calcium phosphate 6-10%, hyperbranched polyester H101 5-8%, and the rest is water.

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