阅读说明：本技术 一种柔性防刺面料及其制备方法 (Flexible stab-resistant fabric and preparation method thereof ) 是由 李鹏 于 2021-08-27 设计创作，主要内容包括：本发明公开了一种柔性防刺面料及其制备方法,涉及面料领域,本发明用端氢硅油与烯丙基聚醚作为反应原料,制备出端羟基聚醚改性聚硅氧烷,与环氧树脂通过硅氢加成反应,生成聚硅氧烷环氧树脂再加入含氢硅油对棉纤维面料进行涂覆,制得柔性防刺面料。本发明制备的柔性防刺面料具有柔软、透气、耐高温、防紫外线的作用。(The invention discloses a flexible stab-resistant fabric and a preparation method thereof, and relates to the field of fabrics. The flexible stab-resistant fabric prepared by the invention has the functions of softness, air permeability, high temperature resistance and ultraviolet resistance.)

1. The flexible stab-resistant fabric is characterized by comprising the following raw material components in parts by weight: 50-80 parts of hydrogen-containing silicone oil epoxy resin, 10-20 parts of organic amine curing agent and 100-150 parts of fabric.

2. The flexible stab-resistant fabric of claim 1, wherein: the hydrogen-containing silicone oil epoxy resin is composed of hydrogen-containing silicone oil and polysiloxane epoxy resin.

3. The flexible stab-resistant fabric of claim 2, wherein: the polysiloxane epoxy resin is prepared by removing a small amount of moisture from hydroxyl-terminated polyether modified polysiloxane and epoxy resin at a certain temperature, and then heating and stirring for a certain time and temperature.

4. The flexible stab-resistant fabric of claim 3, wherein: the hydroxyl-terminated polyether modified polysiloxane is prepared by adding hydrogen-terminated silicone oil and allyl polyether into a tetrahydrofuran solution containing chloroplatinic acid through heating and stirring for hydrosilylation.

5. The flexible stab-resistant fabric of claim 1, wherein: the epoxy resin is one of bisphenol A type epoxy resin and bisphenol F type epoxy resin; the fabric has a gram weight of 130-220 g/m²The cotton fiber fabric.

6. A flexible stab-resistant fabric and a preparation method thereof are characterized by comprising the following steps:

(1) preparation of hydroxyl-terminated polyether modified polysiloxane: stirring and heating hydrogen-terminated silicone oil and a certain amount of tetrahydrofuran solution containing chloroplatinic acid to a certain temperature, then dropwise adding allyl polyether by using a separating funnel, continuously stirring until the reaction is finished, and decompressing, evaporating and removing impurities to obtain hydroxyl-terminated polyether modified polysiloxane;

(2) preparation of polysiloxane epoxy resin: removing a small amount of moisture from the hydroxyl-terminated polyether modified polysiloxane and the epoxy resin at a certain temperature, cooling and standing, and heating and stirring at a high temperature to obtain polysiloxane epoxy resin;

(3) preparation of hydrogen-containing silicone oil epoxy resin: uniformly mixing polysiloxane epoxy resin with hydrogen-containing silicone oil, adding a curing agent organic amine and a catalyst pentaerythritol, and stirring and mixing to obtain the hydrogen-containing silicone oil epoxy resin;

(4) preparing a flexible stab-resistant fabric: and (4) coating the fabric with the hydrogen-containing silicone oil epoxy resin obtained in the step (3), and curing at high temperature to obtain the flexible stab-resistant fabric.

7. The flexible stab-resistant fabric and the preparation method thereof according to claim 6, wherein in the step (1): adding hydrogen-terminated silicone oil and a certain amount of tetrahydrofuran solution containing chloroplatinic acid into a four-neck flask according to the mass ratio of 3: 1-5: 1, continuously stirring and heating to a certain temperature, dropwise adding allyl polyether with the weight of 0.1-0.5 times that of the hydrogen-terminated silicone oil at the temperature by using a separating funnel, continuously stirring, and after the reaction is finished, removing volatile products from the mixture through reduced pressure distillation to obtain the hydrogen-terminated silicone oil.

8. The flexible stab-resistant fabric and the preparation method thereof according to claim 6, wherein in the step (2): respectively carrying out rotary evaporation on the hydroxyl-terminated polyether modified polysiloxane and the epoxy resin at the temperature of 80-100 ℃ for 20-30 min, removing excessive water, cooling to room temperature, adding the treated hydroxyl-terminated polyether modified polysiloxane and the treated epoxy resin in a mass ratio of 2: 1-5: 1 into a three-neck flask containing a stirring and feeding funnel and a reflux condenser, stirring and heating to 80-100 ℃, then gradually dropwise adding dibutyltin dilaurate with the mass of 0.1-0.3 time that of the epoxy resin, continuously heating to 130-150 ℃, and stirring at constant temperature for several hours to obtain the polysiloxane epoxy resin.

9. The flexible stab-resistant fabric and the preparation method thereof according to claim 6, wherein in the step (3): mixing polysiloxane epoxy resin and hydrogen-containing silicone oil according to the mass ratio of 5: 2-10: 2, heating and stirring to 130-160 ℃, and performing post-treatment on a product to obtain the hydrogen-containing silicone oil epoxy resin.

10. The flexible stab-resistant fabric and the preparation method thereof according to claim 6, wherein the coating amount in the step (4) is as follows: and controlling the thickness of the coated and cured epoxy resin film layer to be 0.005-0.01 mm.

Technical Field

The invention relates to the technical field of fabrics, in particular to a flexible stab-resistant fabric and a preparation method thereof.

Background

Most of fabrics sold in the market of the current generation basically have the softness and the affinity for human bodies, but few fabrics with the softness and the affinity and meeting other requirements are obtained, if various fabrics with different effects are purchased, the fabric breaks through the hardship, economical and green life advocated by the current society, and finally the presented product also loses the existing flexibility and comfort, so that the fabric can achieve the effects of stab resistance, ventilation, ultraviolet resistance and the like on the basis of softness, the economic burden of people can be reduced, and the fabric can achieve two purposes. Therefore, it is necessary to design a flexible stab-resistant fabric with air permeability and ultraviolet resistance.

Disclosure of Invention

The invention aims to provide a flexible stab-resistant fabric and a preparation method thereof, and aims to solve the problems in the background technology.

In order to solve the technical problems, the invention provides the following technical scheme: a flexible stab-resistant fabric and a preparation method thereof are disclosed, and the fabric comprises the following raw materials in parts by weight:

50-80 parts of hydrogen-containing silicone oil epoxy resin, 10-20 parts of organic amine curing agent and 100-150 parts of fabric.

Preferably, the hydrogen-containing silicone oil epoxy resin is composed of hydrogen-containing silicone oil and polysiloxane epoxy resin.

Preferably, the polysiloxane epoxy resin is prepared by removing a small amount of moisture from hydroxyl-terminated polyether modified polysiloxane and epoxy resin at a certain temperature, and then heating and stirring for a certain time and temperature.

Preferably, the hydroxyl-terminated polyether modified polysiloxane is prepared by adding hydrogen-terminated silicone oil and allyl polyether into a tetrahydrofuran solution containing chloroplatinic acid through heating and stirring for hydrosilylation.

Preferably, the epoxy resin is one of bisphenol A type epoxy resin and bisphenol F type epoxy resin; the fabric has a gram weight of 130-220 g/m²The cotton fiber fabric.

The invention provides a flexible stab-resistant fabric and a preparation method thereof, and the preparation method comprises the following specific steps:

(1) preparation of hydroxyl-terminated polyether modified polysiloxane: stirring and heating hydrogen-terminated silicone oil and a certain amount of tetrahydrofuran solution containing chloroplatinic acid to a certain temperature, then dropwise adding allyl polyether by using a separating funnel, continuously stirring until the reaction is finished, and decompressing, evaporating and removing impurities to obtain hydroxyl-terminated polyether modified polysiloxane;

(2) preparation of polysiloxane epoxy resin: removing a small amount of moisture from the hydroxyl-terminated polyether modified polysiloxane and the epoxy resin at a certain temperature, cooling and standing, and heating and stirring at a high temperature to obtain polysiloxane epoxy resin;

(3) preparation of hydrogen-containing silicone oil epoxy resin: uniformly mixing polysiloxane epoxy resin with hydrogen-containing silicone oil, adding a curing agent organic amine and a catalyst pentaerythritol, and stirring and mixing to obtain the hydrogen-containing silicone oil epoxy resin;

(4) preparing a flexible stab-resistant fabric: and (4) coating the fabric with the hydrogen-containing silicone oil epoxy resin obtained in the step (3), and curing at high temperature to obtain the flexible stab-resistant fabric.

Preferably, in the step (1): adding hydrogen-terminated silicone oil and a certain amount of tetrahydrofuran solution containing chloroplatinic acid into a four-neck flask according to the mass ratio of 3: 1-5: 1, continuously stirring and heating to a certain temperature, dropwise adding allyl polyether with the weight of 0.1-0.5 times that of the hydrogen-terminated silicone oil at the temperature by using a separating funnel, continuously stirring, and after the reaction is finished, removing volatile products from the mixture through reduced pressure distillation to obtain the hydrogen-terminated silicone oil.

Preferably, in the step (2): respectively carrying out rotary evaporation on the hydroxyl-terminated polyether modified polysiloxane and the epoxy resin at the temperature of 80-100 ℃ for 20-30 min, removing excessive water, cooling to room temperature, adding the treated hydroxyl-terminated polyether modified polysiloxane and the treated epoxy resin in a mass ratio of 2: 1-5: 1 into a three-neck flask containing a stirring and feeding funnel and a reflux condenser, stirring and heating to 80-100 ℃, then gradually dropwise adding dibutyltin dilaurate with the mass of 0.1-0.3 time that of the epoxy resin, continuously heating to 130-150 ℃, and stirring at constant temperature for several hours to obtain the polysiloxane epoxy resin.

Preferably, in the step (3): mixing polysiloxane epoxy resin and hydrogen-containing silicone oil according to the mass ratio of 5: 2-10: 2, heating and stirring to 130-160 ℃, and performing post-treatment on a product to obtain the hydrogen-containing silicone oil epoxy resin.

Preferably, the coating amount in the step (4) is: and controlling the thickness of the coated and cured epoxy resin film layer to be 0.005-0.01 mm.

Compared with the prior art, the invention has the following beneficial effects:

firstly, the invention takes hydrogen-terminated silicone oil and allyl polyether as reaction raw materials to prepare hydroxyl-terminated polyether modified polysiloxane, and the hydroxyl-terminated polyether modified polysiloxane and epoxy resin generate polysiloxane epoxy resin through hydrosilylation reaction, alkoxy of the modified polysiloxane and secondary hydroxyl in the epoxy resin react to form stable siloxane bonds, the siloxane bonds can play a role in shielding organic molecular chains, thereby improving the ultraviolet resistance, and the siloxane bonds in the modified polysiloxane epoxy resin absorb moisture in the air under the action of alkaline environment to generate polymerization reaction to generate a siloxane structure with a space network structure, the structure can play a role in heat resistance on the polysiloxane epoxy resin, when the siloxane bonds with larger bond energy are introduced into the epoxy resin, the thermal decomposition temperature of a curing system can also be improved, thereby enhancing the high temperature resistance and the thermal stability of a cured product, although a siloxane chain segment with a network structure generated by siloxane bond polycondensation is incompatible with epoxy resin, one end of the epoxy resin is connected with hydroxyl polyether modified polysiloxane through a chemical bond, so that the compatibility of the siloxane chain segment with the network structure and the epoxy resin can be improved, the siloxane chain segment can be well dispersed in the curing process, the movement of a molecular chain is limited along with the progress of epoxy group ring-opening polymerization reaction in the curing process, the polysiloxane forms a network structure after grafting the epoxy resin to prevent relative migration of macromolecules of cotton fibers, the polysiloxane has good surface activity, the flexibility of the cotton fibers is enhanced, and the hydrophilicity of the cotton fibers can be enhanced due to the introduction of a hydrophilic polyether chain segment.

According to the invention, the hydrogen-containing silicone oil is added into the epoxy resin for preparing the flexible stab-resistant fabric, the hydrogen-containing silicone oil can perform further cross-linking foaming reaction with the modified epoxy resin containing the hydroxyl-terminated polysiloxane, the hydrogen generated during the reaction can promote the epoxy resin to foam, so that the epoxy resin can form a porous structure, the fabric still has air permeability after the fabric is coated, and through the assistance of pentaerythritol serving as a catalyst, foams can expand at a constant speed and have high multiplying power, formed cells are fine, small in density and high in void ratio, the hydrogen-containing silicone oil performs hydrosilylation reaction during synthesis with the epoxy resin, when the product is used, as a silane structure is connected into epoxy resin molecules, the structure can perform hydrolysis reaction with moisture to generate silanol, and then dehydration condensation is performed to form a silicone-oxygen bond, so that the three-dimensional network cross-linking structure of the product can be further improved after the fabric is washed with water, the wear resistance is enhanced, so that the product has long-acting soft stab-resistant effect.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides the technical scheme that: a flexible stab-resistant fabric and a preparation method thereof are disclosed, and the fabric comprises the following raw materials in parts by weight:

50-80 parts of hydrogen-containing silicone oil epoxy resin, 10-20 parts of organic amine curing agent and 100-150 parts of fabric.

Preferably, the hydrogen-containing silicone oil epoxy resin is composed of hydrogen-containing silicone oil and polysiloxane epoxy resin.

Preferably, the polysiloxane epoxy resin is prepared by removing a small amount of moisture from hydroxyl-terminated polyether modified polysiloxane and epoxy resin at a certain temperature, and then heating and stirring for a certain time and temperature.

Preferably, the hydroxyl-terminated polyether modified polysiloxane is prepared by adding hydrogen-terminated silicone oil and allyl polyether into a tetrahydrofuran solution containing chloroplatinic acid through heating and stirring for hydrosilylation.

Preferably, the epoxy resin is one of bisphenol A type epoxy resin and bisphenol F type epoxy resin; the fabric has a gram weight of 130-220 g/m²The cotton fiber fabric.

The invention provides a flexible stab-resistant fabric and a preparation method thereof, and the preparation method comprises the following specific steps:

(1) preparation of hydroxyl-terminated polyether modified polysiloxane: stirring and heating hydrogen-terminated silicone oil and a certain amount of tetrahydrofuran solution containing chloroplatinic acid to a certain temperature, then dropwise adding allyl polyether by using a separating funnel, continuously stirring until the reaction is finished, and decompressing, evaporating and removing impurities to obtain hydroxyl-terminated polyether modified polysiloxane;

(2) preparation of polysiloxane epoxy resin: removing a small amount of moisture from the hydroxyl-terminated polyether modified polysiloxane and the epoxy resin at a certain temperature, cooling and standing, and heating and stirring at a high temperature to obtain polysiloxane epoxy resin;

(3) preparation of hydrogen-containing silicone oil epoxy resin: uniformly mixing polysiloxane epoxy resin with hydrogen-containing silicone oil, adding a curing agent organic amine and a catalyst pentaerythritol, and stirring and mixing to obtain the hydrogen-containing silicone oil epoxy resin;

(4) preparing a flexible stab-resistant fabric: and (4) coating the fabric with the hydrogen-containing silicone oil epoxy resin obtained in the step (3), and curing at high temperature to obtain the flexible stab-resistant fabric.

Preferably, in the step (1): adding hydrogen-terminated silicone oil and a certain amount of tetrahydrofuran solution containing chloroplatinic acid into a four-neck flask according to the mass ratio of 3: 1-5: 1, continuously stirring and heating to a certain temperature, dropwise adding allyl polyether with the weight of 0.1-0.5 times that of the hydrogen-terminated silicone oil at the temperature by using a separating funnel, continuously stirring, and after the reaction is finished, removing volatile products from the mixture through reduced pressure distillation to obtain the hydrogen-terminated silicone oil.

Preferably, in the step (2): respectively carrying out rotary evaporation on the hydroxyl-terminated polyether modified polysiloxane and the epoxy resin at the temperature of 80-100 ℃ for 20-30 min, removing excessive water, cooling to room temperature, adding the treated hydroxyl-terminated polyether modified polysiloxane and the treated epoxy resin in a mass ratio of 2: 1-5: 1 into a three-neck flask containing a stirring and feeding funnel and a reflux condenser, stirring and heating to 80-100 ℃, then gradually dropwise adding dibutyltin dilaurate with the mass of 0.1-0.3 time that of the epoxy resin, continuously heating to 130-150 ℃, and stirring at constant temperature for several hours to obtain the polysiloxane epoxy resin.

Preferably, in the step (3): mixing polysiloxane epoxy resin and hydrogen-containing silicone oil according to the mass ratio of 5: 2-10: 2, heating and stirring to 130-160 ℃, and performing post-treatment on a product to obtain the hydrogen-containing silicone oil epoxy resin.

Preferably, the coating amount in the step (4) is: and controlling the thickness of the coated and cured epoxy resin film layer to be 0.005-0.01 mm.

Example 1: flexible stab-resistant fabric I

A flexible stab-resistant fabric comprises the following raw materials in parts by weight:

50 parts of hydrogen-containing silicone oil epoxy resin, 10 parts of organic amine curing agent and 100 parts of fabric.

A flexible stab-resistant fabric and a preparation method thereof comprise the following specific steps:

(1) preparation of hydroxyl-terminated polyether modified polysiloxane: stirring and heating hydrogen-terminated silicone oil and a certain amount of tetrahydrofuran solution containing chloroplatinic acid to a certain temperature, then dropwise adding allyl polyether by using a separating funnel, continuously stirring until the reaction is finished, and decompressing, evaporating and removing impurities to obtain hydroxyl-terminated polyether modified polysiloxane;

(2) preparation of polysiloxane epoxy resin: removing a small amount of moisture from the hydroxyl-terminated polyether modified polysiloxane and the epoxy resin at a certain temperature, cooling and standing, and heating and stirring at a high temperature to obtain polysiloxane epoxy resin;

(3) preparation of hydrogen-containing silicone oil epoxy resin: uniformly mixing polysiloxane epoxy resin with hydrogen-containing silicone oil, adding a curing agent organic amine and a catalyst pentaerythritol, and stirring and mixing to obtain the hydrogen-containing silicone oil epoxy resin;

(4) preparing a flexible stab-resistant fabric: and (4) coating the fabric with the hydrogen-containing silicone oil epoxy resin obtained in the step (3), and curing at high temperature to obtain the flexible stab-resistant fabric.

Preferably, in the step (1): adding hydrogen-terminated silicone oil and a certain amount of tetrahydrofuran solution containing chloroplatinic acid into a four-neck flask according to the mass ratio of 3:1, continuously stirring and heating to a certain temperature, dropwise adding allyl polyether with the weight of 0.1 time of that of the hydrogen-terminated silicone oil by using a separating funnel at the temperature, continuously stirring, and after the reaction is finished, removing volatile products from the mixture through reduced pressure distillation to obtain the hydrogen-terminated silicone oil.

Preferably, in the step (2): respectively carrying out rotary evaporation on the hydroxyl-terminated polyether modified polysiloxane and the epoxy resin at 80 ℃ for 20min, removing excessive water, cooling to room temperature, adding the hydroxyl-terminated polyether modified polysiloxane and the epoxy resin which are processed in a mass ratio of 2:1 into a three-neck flask comprising a stirring and feeding funnel and a reflux condenser pipe, stirring and heating to 80 ℃, then gradually dropwise adding dibutyltin dilaurate which is 0.1 time of the mass of the epoxy resin, continuously heating to 130 ℃, and stirring at constant temperature for 3 hours to obtain the polysiloxane epoxy resin.

Preferably, in the step (3): mixing polysiloxane epoxy resin and hydrogen-containing silicone oil according to the mass ratio of 5:2, heating and stirring to 130 ℃, and performing post-treatment on a product to obtain the hydrogen-containing silicone oil epoxy resin.

Preferably, the coating amount in the step (4) is: the thickness of the epoxy resin film layer after coating and curing is controlled to be 0.005 mm.

Example 2: flexible stab-resistant fabric II

A flexible stab-resistant fabric comprises the following raw materials in parts by weight:

80 parts of hydrogen-containing silicone oil epoxy resin, 20 parts of organic amine curing agent and 150 parts of fabric.

A flexible stab-resistant fabric and a preparation method thereof comprise the following specific steps:

(1) preparation of hydroxyl-terminated polyether modified polysiloxane: stirring and heating hydrogen-terminated silicone oil and a certain amount of tetrahydrofuran solution containing chloroplatinic acid to a certain temperature, then dropwise adding allyl polyether by using a separating funnel, continuously stirring until the reaction is finished, and decompressing, evaporating and removing impurities to obtain hydroxyl-terminated polyether modified polysiloxane;

(2) preparation of polysiloxane epoxy resin: removing a small amount of moisture from the hydroxyl-terminated polyether modified polysiloxane and the epoxy resin at a certain temperature, cooling and standing, and heating and stirring at a high temperature to obtain polysiloxane epoxy resin;

(3) preparation of hydrogen-containing silicone oil epoxy resin: uniformly mixing polysiloxane epoxy resin with hydrogen-containing silicone oil, adding a curing agent organic amine and a catalyst pentaerythritol, and stirring and mixing to obtain the hydrogen-containing silicone oil epoxy resin;

(4) preparing a flexible stab-resistant fabric: and (4) coating the fabric with the hydrogen-containing silicone oil epoxy resin obtained in the step (3), and curing at high temperature to obtain the flexible stab-resistant fabric.

Preferably, in the step (1): adding hydrogen-terminated silicone oil and a certain amount of tetrahydrofuran solution containing chloroplatinic acid into a four-neck flask according to the mass ratio of 5:1, continuously stirring and heating to a certain temperature, dropwise adding allyl polyether with the weight 0.5 times that of the hydrogen-terminated silicone oil by using a separating funnel at the temperature, continuously stirring, and after the reaction is finished, removing volatile products from the mixture through reduced pressure distillation to obtain the hydrogen-terminated silicone oil.

Preferably, in the step (2): respectively carrying out rotary evaporation on the hydroxyl-terminated polyether modified polysiloxane and the epoxy resin at 100 ℃ for 30min, removing excessive water, cooling to room temperature, adding the hydroxyl-terminated polyether modified polysiloxane and the epoxy resin which are processed in a mass ratio of 5:1 into a three-neck flask comprising a stirring and feeding funnel and a reflux condenser pipe, stirring and heating to 100 ℃, then gradually dropwise adding dibutyltin dilaurate which is 0.3 time of the mass of the epoxy resin, continuously heating to 150 ℃, and stirring at constant temperature for 3 hours to obtain the polysiloxane epoxy resin.

Preferably, in the step (3): mixing polysiloxane epoxy resin and hydrogen-containing silicone oil according to the mass ratio of 10:2, heating and stirring to 160 ℃, and performing post-treatment on a product to obtain the hydrogen-containing silicone oil epoxy resin.

Preferably, the coating amount in the step (4) is: the thickness of the epoxy resin film layer after coating and curing is controlled to be 0.01 mm.

Comparative example 1:

preparing a common fabric: after spinning, weaving and dyeing and finishing the common cotton fiber, treating the fabric by using a conditioner to obtain the common cotton fiber fabric.

Comparative example 2:

comparative example 2 was formulated as in example 1. The preparation method of the flexible stab-resistant fabric is different from that of the example 1 only in that the preparation of the step (2) is not carried out, and the rest preparation steps are the same as those of the example 1.

Comparative example 3:

the formulation of ratio 3 was the same as in example 1. The preparation method of the flexible stab-resistant fabric is different from that of the example 1 only in that the preparation of the step (3) is not carried out, and the rest preparation steps are the same as those of the example 1.

Test example 1

The fabrics prepared in the embodiment 1, the comparative example 1 and the comparative example 2 are respectively placed in an ultraviolet aging box for artificial accelerated aging, the shielding effect of the fabrics on ultraviolet light is observed, and the higher the light retention rate is, the better the shielding effect on the ultraviolet light is, and the better the ultraviolet aging resistance is.

	Luminous efficiency
		Example 1	90％
Comparative example 1	30％
		Comparative example 2	60％

The highest light retention rate in example 1 can be seen from the size of the light retention rate in the table above, because the absorption degree of ultraviolet light by polysiloxane contained in the fabric is very small, and the alkoxy group of the modified polysiloxane reacts with the secondary hydroxyl group in the epoxy resin to form a stable siloxane bond, and the siloxane bond can play a role in shielding light of an organic molecular chain, thereby improving the ultraviolet resistance.

Test example 2

The reactions before the fabrics of example 1 and comparative example 3 were observed, and the expansion ratio, the average density of the epoxy resin coating, and the average pore diameter of the epoxy resin coating were measured to obtain the following data.

	Expansion ratio	Average density (kg. m)-3)	Average pore diameter (mm)
				Example 1	2.47	630	0.37
Comparative example 1	1.61	850	0.45

From the above table, it can be seen that the foams generated in the reaction of comparative example 3 without adding hydrogen-containing silicone oil are not uniformly expanded, the expansion ratio is small, the pore diameter is not uniform and the porosity is low, while the foams containing hydrogen-containing silicone oil in example 1 are uniformly expanded, the expansion ratio is large, the pore diameter is small and dense and the pores are uniformly distributed, so that the hydrogen-containing silicone oil can perform further cross-linking foaming reaction with the modified epoxy resin containing hydroxyl-terminated polysiloxane, and the hydrogen generated in the reaction can promote the epoxy resin to foam, so that the epoxy resin can form a porous structure, after the fabric is coated, the fabric still has air permeability, and the foams can be uniformly expanded and have high ratio, and the formed pores are fine, small in density and high in porosity.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.