CN217917069U

CN217917069U - High-hydroscopicity resin composite heat insulation cloth

Info

Publication number: CN217917069U
Application number: CN202220223647.0U
Authority: CN
Inventors: 杨阳; 杨昊; 彭立增; 杨志亮; 李劲松; 邢介光
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-01-26
Filing date: 2022-01-26
Publication date: 2022-11-29
Anticipated expiration: 2032-01-26

Abstract

The utility model discloses a compound thermal-insulated cloth of super absorbent resin, including skin 1, inlayer 2 to and intermediate level 3, its characterized in that, intermediate level 3 comprises three-dimensional network structure 4, and three-dimensional network structure 4 is including the irregular netted accommodation space 5 that communicates each other, and 6 holding in the accommodation space 5 of super absorbent resin powder. The technical bottleneck that sodium polyacrylate resin powder is used as a heat insulation material in the prior art is solved, and the sodium polyacrylate resin powder can smoothly, continuously and uniformly form a firm and non-shedding gel heat insulation layer in heat insulation cloth.

Description

High-hydroscopicity resin composite heat insulation cloth

Technical Field

The utility model relates to a fire-retardant thermal-insulated fire-fighting equipment technical field, concretely relates to compound thermal-insulated cloth of super absorbent resin.

Background

In the prior art, water is still the most common fire extinguishing agent and has the advantages of low price, easy obtaining, no pollution to the environment and the like. However, in the field of fire-proof heat-insulating cloth, there are not many cases where water is used as a heat-insulating medium. The traditional fireproof heat-insulating material usually selects metal, ceramic and fiber as the basis of composite materials, and utilizes the fireproof heat-insulating property of the fireproof material to complete the protection task. However, the actual thermal insulation effect of this type of protective material is not ideal, the intense burning sensation after entering a fire scene has a great impact on the wearer, and the protective material has a very large weight, is expensive to manufacture, has a complex manufacturing process, and is not suitable for daily household use or is not configured as a stock fire-fighting equipment in some unimportant occasions.

Super Absorbent Resin (SAR) is a novel functional polymer material which contains strong hydrophilic groups such as carboxyl and amido and has a water swelling type and three-dimensional network structure with a certain degree of crosslinking, and is represented by sodium polyacrylate Resin. It is insoluble in water and organic solvent, and has unique performance, strong water absorption and water retention. Compared with the traditional water absorption materials such as sponge, cotton, cellulose and silica gel, the super absorbent resin has large water absorption capacity, can rapidly absorb liquid water which is dozens of times or even thousands of times of self weight, has strong water retention property, is not easy to lose water even under the heating and pressurizing condition, and simultaneously has some characteristics of high polymer materials. Due to these characteristics, the research and development of the super absorbent resin is very rapid, and the super absorbent resin has been widely applied to various fields such as agriculture, forestry, gardening, medical health, food industry, petrochemical industry, building materials and the like.

Superabsorbent polymers have been rapidly developed and diversified, and are classified into various methods mainly according to the source of raw materials, hydrophilization method, type of hydrophilic group, crosslinking method, and product form, and the most commonly used classification methods include starch-based superabsorbent polymers, cellulose-based superabsorbent polymers, synthetic superabsorbent polymers, protein-based superabsorbent polymers, blend and composite superabsorbent polymers, and the like.

Superabsorbent resins are capable of absorbing hundreds or even thousands of times their own mass of water because they have two conditions: firstly, it has hydrophilic groups such as carboxyl, hydroxyl, amide, and sulfonic groups, etc., making water absorption possible. Secondly, the water-absorbing material has a three-dimensional space network structure and is insoluble in water, so that the water absorption becomes practical. The super absorbent resin is a three-dimensional network polymer which has hydrophilic groups and is slightly crosslinked, can absorb a large amount of water, swell and keep the water not to flow out, and has the advantages of high water absorption rate, strong water retention performance and the like. The application of the high-water-absorption resin, in particular the high-molecular hydrogel of the polyacrylic acid high-water-absorption resin in the fields of fire fighting and emergency has the following advantages:

1. in the super absorbent resin, after side groups of the polyelectrolyte meet water, corresponding anion hydrophilic groups and cations (mobile ions) are ionized, and negative anions are arranged on a main chain network framework and cannot move, and the repulsion action between the negative anions and the cations generates the power for network expansion. Although the cations have certain mobility, the cations exist in the network due to the attraction and the constraint of opposite charges of the network framework, so that the concentration of the cations in the network is greater than that of the cations in external water, ions generate osmotic pressure inside and outside the network, and in addition, water can enter the three-dimensional network in a large amount in a short time due to the fact that the polyelectrolyte has groups with strong hydrophilic capacity. Under the condition of high temperature, the super absorbent resin fixed with a large amount of free water has quite large heat capacity, can consume a large amount of heat during dehydration, forms effective isolation to a heat source, and is favorable for protecting the safety of personnel in a fire scene with large fire intensity.

2. The super absorbent resin forms an elastic gel after absorbing water, and the gel particles are tightly connected together without gaps for air to enter, so that the contact between a fire source and air can be isolated in a hydrogel state, objects in a fire scene covered by the gel can be protected, and the effect of completely isolating the fire source and personnel can be achieved.

3. The super absorbent resin forms gel after absorbing water, has excellent chemical stability, thermal stability and compatibility, very high viscosity and very good adhesion capability, can cover the surface of an object without falling, forms enough adhesion thickness, and can effectively improve the heat insulation effectiveness of unburnt objects in a fire scene.

4. The super absorbent resin is high polymer powder, is safe in storage, transportation and the like, has storage (airtight anti-water absorption) stability of more than two years, and is non-toxic; in strong fire, the resin is burnt into carbon dioxide and water after being heated and dehydrated, and is nontoxic to people and livestock; after the fire is extinguished, the residual resin can be naturally degraded within several months, and the fire-extinguishing agent is non-toxic and pollution-free to human and environment and is green and environment-friendly.

5. The super absorbent resin powder has light specific gravity and strong water absorption capacity, can absorb water more than 300 times of the self weight in a very short time, and the resin powder content in the whole water absorbent gel is generally between 0.05 and 0.5 percent of the weight of the water. Generally about 0.1 percent, a large amount of fire extinguishing gel can be formed only by little super absorbent resin powder, the fire extinguishing and preventing effect is excellent, water can be continuously absorbed, secondary damage caused by flowing of redundant water is avoided, and water can be sufficiently absorbed in a short time to form a strong heat source isolating effect.

In the prior art, most of the super absorbent resin fire extinguishing agents are mixed with water for extinguishing open fire, the mixing mode cannot be used in daily families at all, and heat insulation cloth for manufacturing daily fire scene protection is not used. In order to solve the problems, the technical scheme of applying the powdery fire extinguishing agent to the fireproof cloth material appears in the prior art.

For example, the first prior art discloses a fire-resistant laminate structure, comprising: a first substrate selected from a fiber cloth; a high water absorption layer, which is covered on at least one side surface of the two side surfaces of the first base layer and is made of high water absorption resin; at least one second base layer selected from fiber cloth, wherein the second base layer is arranged on the surface of the first base layer with the high water absorption layer through a combination unit, so that the high water absorption layer is clamped between the adjacent first and second base layers; therefore, the super absorbent resin of the super absorbent layer is mixed with water to form a gel water retaining layer containing water particles, so as to form a layered structure with good heat insulation and fire prevention effects, wherein the combination unit between the first base layer and the second base layer is an adhesive layer for supporting the layered structure. However, this protective material is not ideal for fixing the super absorbent resin powder, and particularly, after the outer layer nonwoven fabric is burnt out by high temperature flame, the gel having absorbed water is not fixed well, and flows or drops, resulting in a great reduction in heat insulation effect.

The second prior art discloses a fireproof layer body, which comprises: a main body part and a plurality of water absorption units; the main body part comprises a first base layer, a second base layer and a plurality of independent spaces, wherein the second base layer is arranged at intervals with the first base layer, the independent spaces are arranged between the first base layer and the second base layer, one of the first base layer and the second base layer of the main body part is made of fireproof materials, and the other one of the first base layer and the second base layer of the main body part is provided with a water permeable structure; the water absorption unit is accommodated in the independent space; each water absorption unit comprises a water absorption layer made of water absorption polymers and a water permeable layer wrapping the water absorption layer, the water absorption layer is provided with a plurality of water absorption polymer particles, the fireproof layer body further comprises an isolation layer, and the isolation layer is arranged between the first base layer and the second base layer and defines the independent space together with the first base layer and the second base layer. However, this protective material is not ideal for fixing the super absorbent resin powder, because the problem of fixing the resin before absorbing water is mainly taken into consideration, and particularly, the gel absorbing water is not fixed well after the outer layer nonwoven fabric is burnt out by high temperature flame, and flows or drops, resulting in a great reduction in the heat insulation effect.

The third prior art discloses a fireproof fabric, which comprises a non-woven fabric, fluffy cloth and a non-woven fabric base material, wherein the fluffy cloth is clamped between the non-woven fabric and the non-woven fabric base material, sodium polyacrylate particles are distributed on the fluffy cloth and fixed between the non-woven fabric and the non-woven fabric base material, and the non-woven fabric, the fluffy cloth and the non-woven fabric base material are adhered together through glue. The invention focuses on the distribution of the powder before water absorption, and the resin powder is fixed between the fabric and the backing material by utilizing the friction force of the fluffy cloth and glue, so that the powder particles are concentrated on the surface of the fluffy cloth, and the water permeability is reduced. The invention does not see a significant effect of the spatial network of the intermediate layer on the immobilization of the resin powder particles, or an undesired migration of the powder particles occurs and the distribution of the powder particles in space is not ideal. After the flame burns through the outer layer of the non-woven fabric, resin powder particles after absorbing water can fall off due to the fact that the framework is not supported, and once the air tightness is damaged, most of heat insulation and flame retardant effects are lost.

In view of the above, there is a need in the market for a composite thermal insulation fabric that can achieve rapid and controlled mixing of super absorbent resin powder and water, and can continuously and stably maintain the mixed gel at a designated position, and especially can completely preserve the gel layer on the outer side of the inner fabric after the outer fabric is burned by open fire.

Disclosure of Invention

The utility model aims to solve the technical problem that a super absorbent resin composite heat insulation cloth is provided, can realize quick, the controlled mixture of super absorbent resin powder and water to can continuously stably keep the gel after mixing at the assigned position.

The technical scheme of the utility model, a compound thermal-insulated cloth of super absorbent resin for make fire-resistant protective clothing, including skin 1, inlayer 2 to and intermediate level 3, its characterized in that, intermediate level 3 comprises three-dimensional network structure 4, three-dimensional network structure 4 is including the irregular netted accommodation space 5 of intercommunication each other, and 6 holding of super absorbent resin powder in accommodation space 5.

Furthermore, the size of particles of the super absorbent resin powder 6, which account for more than 90% of the total weight of the super absorbent resin powder 6, is controlled to be 70-120 meshes.

Further, the pore size of the three-dimensional network structure 4 is substantially consistent with the controlled size of the particles of the super absorbent resin powder 6.

Further, the strength of the three-dimensional net structure 4 of the middle layer 3 is configured to ensure that the three-dimensional net structure 4 has a thickness of at least 3mm after being bonded to the outer layer 1 and the inner layer 2.

Further, the outer layer 1, the inner layer 2 and the intermediate layer 3 are connected together by ultrasonic welding points 7.

Further, the ultrasonic welding spots 7 divide the heat-insulating cloth into a plurality of independent parts 8 which are relatively separated; the outer layer 1 has channels 9, the channels 9 being formed by the ultrasonic welds 7.

Further, the welding bond strength of the ultrasonic wave spot 7 is set so that the ultrasonic wave spot 7 is spread after the super absorbent resin powder 6 absorbs water.

Further, the outer layer 1 is made of hydrophilic non-woven fabric materials, the pore diameter of the outer layer is not larger than that of the inner layer 2, and the inner layer is made of waterproof non-woven fabric materials.

Further, the super absorbent resin is a polyacrylic acid sodium salt copolymer.

Compared with the prior art, the utility model discloses an advantage embodies:

1. the resin powder is reliably fixed. The utility model discloses in, further improvement has been made to the structure of intermediate level, makes it have the holding passageway that communicates mutually, is different from prior art, and we put into the super absorbent resin powder as far as possible the space network structure that communicates mutually to the particle diameter through control powder granule does not let fine powder float on the intermediate level surface. On one hand, the powder particles can be fixed by using a mesh formed by fibers under the non-water-absorbing state and are not allowed to move randomly, so that the powder distribution is not uniform; on the other hand, under the water absorption state, the mutually communicated spaces are utilized to ensure that the gel with expanded volume formed after water absorption can relatively move and be tightly bonded with each other to form a sealed and airtight three-dimensional heat insulation protective layer with certain thickness. If the heat insulation layer is too thin, the defects of ventilation and untight adhesion are easily caused, and the flame-retardant heat insulation effect is seriously influenced.

2. The outer layer is not worried. In our experiments, direct flame ignition of flame of more than 1000 ℃ often occurs, and the damage or disappearance of the outer fabric of the protective cloth is basically caused. If the gel is the traditional middle layer, the gel is not connected with each other by a skeleton but is squeezed together, so that the gel can fall off after the cloth surface layer falls off, and a part without gel protection is formed. In a short time, these parts will burn through, resulting in a failure of the insulation protection. The utility model discloses a, because network structure gathers inside and the surface at the gel, played the reinforcing action to the wholeness of gel layer, can form the gel layer on the whole surface of cloth, can not cause earlier burn-through like the former easily at some weak point again. This is particularly important in fire situations where the protective material is broken through at all times and the integrity of the rest of the material is lost.

3. And (6) ultrasonic welding. The utility model discloses preferred adoption ultrasonic bonding's mode replaces traditional heat seal, joining modes such as pressfitting. The method has two advantages, namely no damage to the protective layer. Due to the thick middle layer, the cloth cannot be burnt through during welding. The sewing needle hole can not appear, and the serious conditions such as powder leakage and air leakage can not be caused. And on the basis of guaranteeing the initial segmentation effect and the diversion trench, the later-stage opening function is also added, and the advantages of the resin powder are fully exerted by re-separating the welding spots. Secondly, glue is not needed. Owing to adopted ultrasonic spot welding technique, the utility model discloses need not to apply glue between skin and inlayer, simplified technology greatly to also avoided the glue layer to the interference of super absorbent resin powder physical state, can let the powder absorb the moisture of pouring into better, the accommodation space between whole skin and the inlayer is full of in more smooth and easy inflation. When the inner layer and the outer layer are pressed together, the operation condition of high-temperature pressing is not needed, and the speed of resin powder absorbing injected water is not influenced by the fact that redundant glue is heated and melted.

4. The outer layer has good water permeability, and the inner layer does not leak powder. Because the utility model discloses a must pour into water into before the protection cloth uses, consequently, outer cloth must the water permeability good, just accomplishes the infiltration of moisture preferably in a few seconds, for this reason, we have still utilized the ultrasonic wave solder joint to form the guiding gutter for the leading-in of moisture. In addition, the inlayer adopts water proof material, can effectively prevent that moisture and impurity from flowing into the inlayer and skin contact cause the discomfort after the protective clothing water injection.

Drawings

Fig. 1 is a schematic cross-sectional view of an embodiment of the present invention;

fig. 2 is a schematic view of an embodiment of the present invention;

fig. 3 is a schematic view of an embodiment of the present invention;

fig. 4 is a schematic cross-sectional view of an embodiment of the present invention.

Detailed Description

The following embodiments of the present invention will be described in detail, and the following embodiments are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the following embodiments.

Referring to fig. 1-4, the utility model relates to a fire-fighting equipment technical field discloses a super absorbent resin composite heat insulation cloth for making fire-resistant protective clothing, including skin 1, inlayer 2, and intermediate level 3, its characterized in that, intermediate level 3 comprises three-dimensional network structure 4, three-dimensional network structure 4 includes the irregular netted accommodation space 5 of intercommunication each other, and super absorbent resin powder 6 holding is in accommodation space 5.

The utility model discloses a compound thermal-insulated cloth is because formed the gel layer, so has fire-retardant and thermal-insulated function, and the occasion that can use is more, can make thermal-insulated clothes, and thermal-insulated blanket also can cover on storage tank or building surface fire-retardant thermal-insulated, can also directly cover to the fire source and put out a fire. The heat insulation material can be used for fire emergency and can also be used in daily occasions needing heat insulation measures. The cloth of the utility model takes the super absorbent resin powder 6 contained in the three-dimensional reticular fiber structure as the core heat insulation material, and the cloth is mixed with water before use. Water can be sprayed on the fabric, or a heat insulation blanket and a heat insulation protective garment made of the fabric can be immersed in water until the resin powder in the accommodating space 5 absorbs enough moisture to form an airtight gel layer. Before use, the super absorbent resin powder should form a gel layer after absorbing water, and some parts cannot absorb enough water and some parts cannot absorb no water. The super absorbent resin powder itself does not prevent fire and insulate heat, and all the heat insulation function comes from the gel layer formed by swelling after absorbing water, therefore, the gel covers the whole area needing heat insulation, and no air can penetrate between the gels. Since the fire is usually very urgent, in order to quickly absorb water, the outer layer 1 is designed so that the process from sprinkling or soaking water to absorbing water can be well performed. The fabric made of polyester fiber is not permeable to water and hydrophilic in many cases, and even some nonwoven fabric materials are water-proof, which makes the fabric to absorb water difficult, so the outer layer of the fabric is designed to be a hydrophilic layer.

In the prior art, the outer surface layer of a plurality of protective clothing is designed into a fireproof layer, the design can effectively prevent the surface layer of the protective clothing from being burnt in a short time, but the common material thickness of the product is heavy, the water absorption problem of the middle interlayer of the protective clothing can not be considered, the water absorption speed can be seriously influenced, and the requirement of a large amount of water absorption of the heat insulation cloth in a short time can not be met. Meanwhile, the cooperation of the surface layer and the middle interlayer can not be realized, and the fire fighting can be realized when fire occurs. In addition, the cloth is expensive and difficult to process, so that the cloth is difficult and heavy in practical application. In the present invention, the three-dimensional network structure 4 of the intermediate layer 3 forms an irregular network-shaped space 5 communicating with each other, and the super absorbent resin powder 6 is accommodated in the space 5. The containing space 5 is stored with a large amount of super absorbent resin powder, once absorbing water, a continuous and compact heat insulation layer can be formed, and experiments show that the high temperature of 500-800 ℃ can be directly blocked on the outer layer of the heat insulation cloth, so that the temperature of the inner layer of the heat insulation material is only about 50 ℃, and the heat insulation effect is very obvious. In addition, because the network structure in intermediate level firmly fixes the gel layer after will absorbing water on thermal-insulated cloth, the utility model discloses a thermal-insulated cloth no longer fear the burning out on cloth top layer. According to experimental verification, after the surface cloth is burnt, some places can be directly burnt through, and the remaining carbon net material formed after carbonization of the cloth can be burnt in some places, but no matter what the surface cloth is changed, the integrity of the gel layer in the middle layer 3 is well reserved. Therefore, the flame-retardant heat-insulating effect can be continuously exerted. The three-dimensional network structure 4 with certain pore size of the middle layer 3 plays a key role, and the three-dimensional network structure is a structure with certain strength, and can fix the super absorbent resin powder 6 by utilizing the pores before use; after water absorption, the gel substance generated after the resin powder absorbs water can be fixed, so that the gel layer always protects people or objects inside the heat insulation cloth. The fact that the sodium polyacrylate resin powder can resist flame, insulate heat and extinguish fire after absorbing water is proved, but the sodium polyacrylate resin powder cannot break through the field of heat-insulating cloth in time, and basically is caused by the fact that gel cannot be fixed under the conditions of high temperature and open fire and falls off. Especially in emergency fire fighting use, where firefighters wear similar insulation suits, the continuous insulation ability of the cloth is particularly important because of the additional handling of other fire fighting equipment and the extensive movement, and the failure to cause the gel layer to break and fall off with a few simple actions. The utility model can meet the above requirements and has good high temperature burn resistance.

Further, the outer layer 1 is made of hydrophilic non-woven fabric, the aperture of the outer layer is larger than 120 meshes, and the inner layer 2 is made of waterproof non-woven fabric. Furthermore, the utility model discloses still used inlayer 2, can separate moisture and powder well and see through inlayer direct contact skin, can make inspiratory moisture fix in the middle of intermediate level 3 as much as possible on the one hand, on the other hand also can avoid the powder granule accident to see through the human condition of inlayer fabric direct contact and take place. The pore size of the outer nonwoven fabric material is defined to prevent the resin powder 6 from running out in the reverse direction.

Further, the size of particles of the super absorbent resin powder 6, which accounts for 90% or more of the total weight of the super absorbent resin powder 6, is controlled to be 70 to 120 mesh, and the pore size of the three-dimensional network structure 4 is substantially the same as the size of the particles of the super absorbent resin powder 6. We have found that although the size of the resin particles is not limited and the resin particles can achieve a substantial thermal insulation and flame retardant effect after absorbing water, the gel layer formed after absorbing water of the resin may be relatively quickly peeled off or burnt through after a period of time after direct burning by an open flame. Through experimental analysis, we believe that this is likely due to the different sizes of the resin particles forming the gel layer. In particular, the gel layer formed by the resin powder with larger particles and other resin powder with small size after absorbing water is not very adhesive to each other, and the situation of the weak adhesion is more obvious when the particle size is different greatly. Therefore, the difference range of the sizes of the resin particles is reduced, and the average particle size is slightly reduced, so that the viscosity of gel layer particles formed after water absorption is stronger, the permeation of inner and outer layers is better, a more compact heat-insulating fireproof gel layer can be formed, the combination with the three-dimensional net-shaped structure 4 is more tightly and is not easy to fall off, and even when direct naked fire burns, the heat-insulating layer is not easy to burn through. The following table is a set of data actually measured by us, and illustrates that the resin powder after sieving is superior in fireproof and heat-insulating properties after filling and absorbing water.

The sample is double-sided non-woven fabric, and the cloth specification is 30cmX18cm.

Resin particle size	Without screening	20-80 mesh	70-120 mesh	90-100 mesh
					Water absorption time (second)	60	60	60	60
Flame temperature (. Degree.C.)	1000	1000	1000	1000
					Burn-through time (seconds)	29	30	35	38

In addition, since the three-dimensional network structure 4 needs to support all the fixing of the super absorbent resin powder 6, the pores should be adapted to the particle size of the powder 10, i.e. most of the network voids formed after processing are suitable for accommodating the resin powder with the particle size of 70-120 mesh, and cannot be too small or too large, otherwise the resin powder may not enter the accommodating space or can not be well fixed. Since the pores of the three-dimensional network structure layer 8 are not completely consistent, in some embodiments, more than 90% of the pores of the three-dimensional network structure can be set to be 70-120 mesh. Whether the size of the pores is larger or smaller is larger between 70 and 120 mesh, which is determined mainly by the size of the screen, and is adapted to the size of most resin powder particles as much as possible. The size of the particles of the super absorbent resin powder 6 needs to be controlled between certain sizes, the resin powder particles meeting the requirements of certain sizes can be well fixed in the accommodating space 5 of the three-dimensional net-shaped structure 4, the undersized particles can easily move randomly among the grid gaps, so that the powder particles are not uniformly distributed, and the fine powder particles easily and directly pass through the non-woven fabric gaps of the inner layer and the outer layer, so that powder leakage is caused. Too large particles are difficult to enter the grids to be fixed, and can directly stay on the surface of the middle layer 3 without entering the accommodating space of the three-dimensional net structure 4. Meanwhile, the particles with the preset specification size have excellent water absorption performance, good intervals can be kept among the particles in the grids, the time for forming the gel layer is short, the thickness and the distribution are uniform, and the water absorption particles are not easy to fall off after the outer-layer cloth is burnt.

We have found that although the use of large-sized resin particles provides heat insulation and flame retardancy to some extent even after absorbing water, a large amount of powder particles float on the intermediate layer due to the low permeability of the resin powder particles into the intermediate layer 3, and poor welding and breakage of the nonwoven fabric surface layer occur after the inner and outer layers are pressed together. And after having had space network structure 4, the powder that accords with the size requirement has all got into inside intermediate level 3, the damage that the stress concentration leads to can not appear to distribution in cloth direction of height is more reasonable. The powder with small particles is distributed close to the inner layer 2 and the powder with large particles is distributed close to the outer layer 1. Like this, at the in-process that absorbs water, outer large granule absorbs water earlier, because the actual specific surface area of these large granules is not big, the rate of absorbing water is not very fast to can not expand rapidly at the initial stage that absorbs water, can not form the entering that compact gel layer blockked moisture, so the moisture also can be fully absorbed to the inlayer tiny particle, finally the adhesion forms compact airtight gel layer together, plays fine fire-retardant and thermal-insulated effect.

Further, the strength of the three-dimensional net structure 4 of the middle layer 3 is configured to ensure that the three-dimensional net structure 4 has a thickness of at least 3mm after being bonded to the outer layer 1 and the inner layer 2. The selection of 3 materials in intermediate level has multiple possibility, for example adopts the non-woven fabrics that meets the requirements, and in the production practice, the non-woven fabrics manufacturer can give the product that satisfies various parameters and specification requirement, also can be according to customer's requirement and demand adjustment formula and technological condition, and this all is the conventional operation mode in this field, and this kind of manufacturing method in non-woven fabrics intermediate level is not the utility model discloses concern about. The three-dimensional net structure has various specific forms, but the three-dimensional net structure 4 includes the irregular net-shaped accommodating spaces 5 which are communicated with each other, which is a necessary condition, i.e., the fibers are connected into a net, and the net-shaped structure has the communicated accommodating spaces 5. Only if these two conditions are met, the powder 6 can be better let into and fixed in a reasonable position without powder falling and gel falling before and during use. In addition, it is important that the three-dimensional net structure 4 has a certain strength, a certain thickness is maintained when the inner layer and the outer layer are laminated, and the whole net shape is basically not changed after the resin powder is expanded with water, so that the gel layer with a certain thickness can be firmly fixed in the three-dimensional net structure, and the grid can not be broken to cause gel falling when directly facing to flame.

Further, referring to fig. 2-4, the outer layer 1, the inner layer 2 and the intermediate layer 3 are joined together by ultrasonic welds 7. Compared with the gluing bonding mode in most prior art, the gluing bonding mode reduces redundant processes, improves the bonding cleanliness, eliminates the interference of the adhesive layer on the water absorption and water retention of the resin powder, and can combine three layers of cloth structures together with proper connection strength.

Further, referring to FIGS. 2-4, the ultrasonic welds 7 divide the insulation blanket into a plurality of relatively spaced apart individual sections 8. Although we have carried out various technical treatments, because of the physical properties of the powder particles and the three-layer cloth, relative movement is inevitable, in order to reduce the harm caused by the relative movement as much as possible, the ultrasonic welding points 7 are used for replacing a part of functions of the sewing line, the whole cloth is divided into a plurality of independent parts, the integrity and the supporting strength of the middle layer are well maintained, and after the resin powder absorbs water and expands, all effects can be fully exerted to form a complete and uniform gel heat insulation layer.

Further, with reference to fig. 2-4, the outer layer 1 has channels 9, the channels 9 being formed by ultrasonic welds 7. In design, the water absorption rate and the water permeability rate of the outer layer 1 are expected to reach higher levels, so that the diversion trench 9 is additionally arranged and can be in an arc shape or a straight line shape. Of course, the guide groove 9 can also be used for completing the function of sewing line, and the redundant ultrasonic welding spots 7 are reduced.

Further, the welding bond strength of the ultrasonic weld 7 is set so that the ultrasonic weld 7 is spread after the super absorbent resin powder 6 absorbs water. Because the utility model discloses including adding the intermediate level between the extexine, in ultrasonic bonding, reasonable selection ultrasonic strength just can not cause destructive damage to the extexine, and the joint is effectual. In addition, since the bonding strength is not set to be strong, it is possible to ensure that the movement of the powder particles is well controlled in a non-water-absorbed state; after the minimum water absorption required by flame retardance and heat insulation is achieved, the volume of the resin powder is expanded continuously, so that the ultrasonic welding points can be spread, and a compressed three-dimensional space net structure is released equivalently. Therefore, all the gel formed after water absorption can break through the limitation of ultrasonic welding point dividing lines and be bonded together to form an integral gel layer, the heat insulation layer around the welding points is reinforced, and a more excellent protection effect is achieved.

Further, the super absorbent resin is polyacrylic acid sodium salt copolymer. Through the test of our company, not all the super absorbent resin powder can achieve the optimal fire extinguishing effect, the effects of water absorption mixing and state transition among various super absorbent resin powder are obviously different, and the super absorbent resin powder after absorbing water is sprayed to the fire point, so that the fire extinguishing effects are different. The indexes such as the water absorption rate, the water absorption multiple, the viscosity, the density of the polyacrylic acid sodium salt copolymer powder are in accordance with the fire-fighting system and the mixing method, and the excellent fire-extinguishing effect can be achieved.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The high-water-absorptivity resin composite heat-insulating cloth comprises an outer layer (1), an inner layer (2) and an intermediate layer (3), and is characterized in that the intermediate layer (3) is formed by a three-dimensional net-shaped structure (4), the three-dimensional net-shaped structure (4) comprises irregular net-shaped accommodating spaces (5) which are communicated with each other, and high-water-absorptivity resin powder (6) is accommodated in the accommodating spaces (5).

2. The composite heat-insulating cloth according to claim 1, wherein the size of particles of the super absorbent resin powder (6) is controlled to be 70 to 120 mesh, which accounts for 90% or more of the total weight of the super absorbent resin powder (6).

3. Composite insulating cloth according to claim 1, characterized in that the strength of the three-dimensional network (4) of the intermediate layer (3) is configured so as to ensure that the three-dimensional network (4) also has a thickness of at least 3mm after joining with the outer (1) and inner (2) layers.

4. Composite insulating cloth according to claim 1, characterised in that the outer (1), inner (2) and intermediate (3) layers are joined together by ultrasonic welding points (7).

5. Composite insulating cloth according to claim 4, characterised in that the ultrasonic welding spots (7) divide the insulating cloth into a number of relatively separated individual parts (8).

6. Composite insulating cloth according to claim 5, characterised in that the outer layer (1) has flow channels (9), the flow channels (9) being formed by ultrasonic welding spots (7).

7. The composite heat insulating cloth according to claim 5, characterized in that the weld bonding strength of the ultrasonic wave weld spots (7) is set such that the ultrasonic wave weld spots (7) are spread apart after the super absorbent resin powder (6) absorbs water.

8. The composite heat insulation cloth material of claim 1, wherein the outer layer (1) is made of hydrophilic non-woven fabric material with the pore diameter larger than 120 meshes, and the inner layer (2) is made of water-proof non-woven fabric material.

9. The composite thermal insulating cloth of claim 1, wherein the super absorbent resin is a poly (sodium acrylate) copolymer.