CN110746914A

CN110746914A - Special hot-melt pressure-sensitive adhesive for 3D mattress composite material and preparation method thereof

Info

Publication number: CN110746914A
Application number: CN201911021199.5A
Authority: CN
Inventors: 熊超; 史博特
Original assignee: Shanghai Jiahao Adhesive Products Co Ltd
Current assignee: Shanghai Jiahao Adhesive Products Co Ltd
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-02-04
Anticipated expiration: 2039-10-25
Also published as: CN110746914B

Abstract

The invention relates to the technical field of hot-melt pressure-sensitive adhesives, in particular to a special hot-melt pressure-sensitive adhesive for a 3D mattress composite material and a preparation method thereof. The preparation raw materials of the hot-melt pressure-sensitive adhesive comprise, by weight, 30-40 parts of a thermoplastic elastomer, 50-60 parts of a tackifying resin, 10-20 parts of a softening agent and 1-2 parts of an antioxidant, wherein the thermoplastic elastomer comprises at least one of SBS, SIS and SEBS. The invention provides a hot-melt pressure-sensitive adhesive special for a 3D mattress composite material, which has good opening time and bonding property under a low-temperature condition, such as 0 ℃, through the combined action of the preparation raw materials of the hot-melt pressure-sensitive adhesive, so that the hot-melt pressure-sensitive adhesive can be still used for producing 3D mattresses at a lower temperature, and the requirements of different temperature environments all the year round are met.

Description

Special hot-melt pressure-sensitive adhesive for 3D mattress composite material and preparation method thereof

Technical Field

The invention relates to the technical field of hot-melt pressure-sensitive adhesives, in particular to a special hot-melt pressure-sensitive adhesive for a 3D mattress composite material and a preparation method thereof.

Background

3D mattress combined material comprises two-sided screen cloth and intermediate junction silk, and two-sided screen cloth has decided the gas permeability that traditional materials can not be compared, is difficult for weing and breeds the bacterium, and the rebound resilience of 3D screen cloth has been guaranteed to the intermediate junction silk, can provide suitable resilience force according to unit area's pressure, supports human skeleton comprehensively, makes the human body be in the state of relaxing completely, easily washs, can effectually get rid of peculiar smell dirt and bacterium. In the 3D mattress production process on the market at present, hot melt pressure sensitive adhesive needs to be used, but because the temperature difference in winter and summer, when the temperature is lower, the requirement that the portion glues is reduced to needs to increase the volume of gluing or quick complex method, and current hot melt pressure sensitive adhesive can not satisfy the requirement of producing the 3D mattress under the different temperature environment of four seasons simultaneously.

Disclosure of Invention

In order to solve the problems, the first aspect of the invention provides a preparation raw material of the hot-melt pressure-sensitive adhesive, which comprises, by weight, 30-40 parts of a thermoplastic elastomer, 50-60 parts of a tackifying resin, 10-20 parts of a softening agent and 1-2 parts of an antioxidant, wherein the thermoplastic elastomer comprises at least one of SBS, SIS and SEBS.

As a preferred technical solution of the present invention, the thermoplastic elastomer comprises SIS and SBS, and the weight ratio of SIS to SBS is 1: (0.3-0.4).

As a preferable technical scheme of the invention, the SIS has the S/I of 10/90-20/80 and the melt mass flow rate of 10-15 g/10 min.

As a preferable technical scheme of the invention, the SBS has the S/B of 30/70-40/60 and the melt mass flow rate of 5-10 g/10 min.

In a preferred embodiment of the present invention, the tackifying resin is one or more selected from rosin resin, terpene resin, hydrocarbon resin, and condensation resin.

As a preferable technical scheme of the invention, the tackifying resin comprises hydrocarbon resin and rosin resin, and the weight parts of the hydrocarbon resin and the rosin resin are 1: (0.3-0.5).

As a preferable technical scheme, the preparation method of the rosin resin comprises the following steps:

and heating the rosin and the catalyst to 250-300 ℃ under the condition of nitrogen, adding sugar alcohol, and reacting for 7-10 hours to obtain the rosin resin.

According to a preferable technical scheme of the invention, the sugar alcohol accounts for 15-25 wt% of the rosin.

In a preferred embodiment of the present invention, the sugar alcohol is one or more selected from maltitol, lactitol, trehalose and glucose.

The invention provides a preparation method of the hot-melt pressure-sensitive adhesive special for the 3D mattress composite material, which comprises the following steps:

(1) adding a softening agent into a reaction kettle, stirring and heating to 130-140 ℃, then adding tackifying resin and an antioxidant, introducing nitrogen, heating to 165-185 ℃, and maintaining the temperature for 15-30 min;

(2) and (2) adding a thermoplastic elastomer into the reaction system in the step (1), reacting for 30-60 min, vacuumizing to remove bubbles, and discharging to obtain the hot-melt pressure-sensitive adhesive.

Compared with the prior art, the invention has the following beneficial effects: the invention provides a hot-melt pressure-sensitive adhesive special for a 3D mattress composite material, which has good opening time and bonding property under a low-temperature condition, such as 0 ℃, through the combined action of the preparation raw materials of the hot-melt pressure-sensitive adhesive, so that the hot-melt pressure-sensitive adhesive can be still used for producing 3D mattresses at a lower temperature, and the requirements of different temperature environments all the year round are met.

Detailed Description

The disclosure may be understood more readily by reference to the following detailed description of preferred embodiments of the invention and the examples included therein. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control.

The term "prepared from …" as used herein is synonymous with "comprising". The terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "containing," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.

The conjunction "consisting of …" excludes any unspecified elements, steps or components. If used in a claim, the phrase is intended to claim as closed, meaning that it does not contain materials other than those described, except for the conventional impurities associated therewith. When the phrase "consisting of …" appears in a clause of the subject matter of the claims rather than immediately after the subject matter, it defines only the elements described in the clause; other elements are not excluded from the claims as a whole.

When an amount, concentration, or other value or parameter is expressed as a range, preferred range, or as a range of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, when a range of "1 to 5" is disclosed, the described range should be interpreted to include the ranges "1 to 4", "1 to 3", "1 to 2 and 4 to 5", "1 to 3 and 5", and the like. When a range of values is described herein, unless otherwise stated, the range is intended to include the endpoints thereof and all integers and fractions within the range.

The singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. "optional" or "any" means that the subsequently described event or events may or may not occur, and that the description includes instances where the event occurs and instances where it does not.

Approximating language, as used herein throughout the specification and claims, is intended to modify a quantity, such that the invention is not limited to the specific quantity, but includes portions that are literally received for modification without substantial change in the basic function to which the invention is related. Accordingly, the use of "about" to modify a numerical value means that the invention is not limited to the precise value. In some instances, the approximating language may correspond to the precision of an instrument for measuring the value. In the present description and claims, range limitations may be combined and/or interchanged, including all sub-ranges contained therein if not otherwise stated.

In addition, the indefinite articles "a" and "an" preceding an element or component of the invention are not intended to limit the number requirement (i.e., the number of occurrences) of the element or component. Thus, "a" or "an" should be read to include one or at least one, and the singular form of an element or component also includes the plural unless the stated number clearly indicates that the singular form is intended.

The S/I in the present invention is the weight ratio of S (styrene) to I (isoprene) in SIS, wherein the S/I test method in the present invention is a method well known to those skilled in the art, such as liquid chromatography.

The melt mass flow rate in the present invention is an index for measuring the average molecular size and the flow property of the thermoplastic resin material. The melt mass flow rate can be tested by a melt mass flow rate tester, and the melt mass flow rate is tested according to GB/T3682-2000 by an experimental method, wherein the melt mass flow rate is tested at 200 ℃ under a load of 5 kg.

The S/B in the present invention is the weight ratio of S (styrene) and B (butadiene) in SBS, wherein the S/B test method in the present invention is a method well known to those skilled in the art, such as liquid chromatography.

The present invention is illustrated by the following specific embodiments, but is not limited to the specific examples given below.

The first aspect of the invention provides a hot-melt pressure-sensitive adhesive special for a 3D mattress composite material, which comprises, by weight, 30-40 parts of a thermoplastic elastomer, 50-60 parts of a tackifying resin, 10-20 parts of a softening agent and 1-2 parts of an antioxidant, wherein the thermoplastic elastomer comprises at least one of SBS, SIS and SEBS.

In a preferred embodiment, the hot melt pressure sensitive adhesive of the present invention is prepared from the raw materials of, by weight, 35 parts of a thermoplastic elastomer, 55 parts of a tackifying resin, 13 parts of a softening agent, and 1 part of an antioxidant.

The thermoplastic elastomer of the present invention is an elastomer having rubber elasticity at normal temperature and moldable at high temperature. The thermoplastic elastomer is structurally characterized by comprising a resin section and a rubber section, wherein the resin section and the rubber section are different in chemical bond composition, the resin section forms a physical cross-linking point by virtue of inter-chain acting force, and the rubber section is a high-elasticity chain section and contributes to elasticity.

Thermoplastic elastomers in the present invention include, but are not limited to, styrenic thermoplastic elastomers such as SBS, SIS, SEBS, SEPS; olefins, such as TPO, TPV, TPB, TPI; vinyl chlorides such as TPVC, TCPE; urethanes (TPU), esters (TPEE), amides (TPAE), organic fluorides (TPF), silicones, ethylenes, and the like.

In some embodiments, the thermoplastic elastomer comprises at least one of SBS, SIS, SEBS.

The term "SIS" as used herein refers to a triblock copolymer consisting of styrene and isoprene. The soft rubber chain segment of polyisoprene isolated from each other is arranged in the middle, the hard plastic chain segments of the polyphenylene are arranged on two sides, and the high-temperature-resistant polyisoprene rubber has the performance of vulcanized rubber at room temperature, shows plasticity at high temperature and has good elasticity and bonding strength. SIS used in the present application is not particularly required, and may be commercially available, for example, SIS-1105, SIS-1106, SIS-1126, SIS-1209, SIS-1100, SIS-1120, SIS-1250, SIS-1300, SIS-8151, SIS-8152, SIS-8161, SIS-8259, etc., or may be prepared by itself.

The term "SBS" as used herein refers to a linear triblock copolymer having as its terminal block polystyrene and as its central elastomeric block an ethylene-butene copolymer obtained by copolymerization of polybutadiene. SBS used in the present application is not particularly required, and may be commercially available, for example, SBS-YH791, SBS-YH792, SBS-YH796, SBS-YH188 or the like, or may be obtained by synthesis.

In some embodiments, the thermoplastic elastomer comprises SIS and SBS in a weight ratio of 1: (0.3 to 0.4); preferably, the weight ratio of SIS to SBS is 1: 0.3.

in some preferred embodiments, the SIS has an S/I of 10/90 to 20/80 and a melt mass flow rate of 10 to 15g/10 min; preferably said SIS has an S/I of 16/84 and a melt mass flow rate of 11g/10 min; a preferred said SIS is available under the trademark SIS-1106 from the Barlin petrochemical company.

In some preferred embodiments, the SBS has an S/B of 30/70 to 40/60 and a melt mass flow rate of 5 to 10g/10 min; preferably said SBS has an S/B of 40/60 and a melt mass flow rate of 6g/10 min; the preferred SBS brand is SBS-YH188, available from the Balling petrochemical company.

Tackifying resins

Tackifying resins in the present invention include, but are not limited to, natural series resins including rosin resins (gum rosin, tall oil rosin, wood rosin, hydrogenated rosin, disproportionated rosin, polymerized rosin, esterified rosin, maleated rosin) and terpene resins (α -terpene resins, β -terpene resins, terpene phenolic resins), synthetic series resins including hydrocarbon resins [ C5, C9 and C5/C9 petroleum resins, dicyclopentadiene (DCPD) resins, coumarone-indene resins, styrene series resins, hydrogenated petroleum resins ] and condensation resins (alkyl phenolic resins, xylene resins), and the like.

In some embodiments, the tackifying resin is selected from one or more of rosin resins, terpene resins, hydrocarbon resins, condensation resins.

In some preferred embodiments, the tackifying resin comprises a hydrocarbon resin and a rosin resin, and the weight parts of the hydrocarbon resin and the rosin resin are 1: (0.3 to 0.5); preferably, the weight parts of the hydrocarbon resin and the rosin resin are 1: 0.4.

in some preferred embodiments, the hydrocarbon resin is selected from one or more of C5 petroleum resin, C9 petroleum resin, hydrogenated C5 petroleum resin, hydrogenated C9 petroleum resin, dicyclopentadiene resin, coumarone-indene resin; preferably, the hydrocarbon resin is a hydrogenated C5 petroleum resin; preferably, the hydrogenated C5 petroleum resin has the trade name E5400 and is available from Exxon Mobil.

In some preferred embodiments, the method of preparing the rosin resin comprises the steps of:

The rosin of the present invention is composed mainly of resin acids and some neutrals, and the resin acids are a mixture, which is a generic name for a class of compounds, generally represented by the formula C20H30O 2. The resin acid structure is a three-membered ring phenanthrene skeleton structure and contains two active groups, namely a double bond and a shuttle group. It has several isomers, such as abietic acid, neoabietic acid, palustric acid, levopimaric acid, isopimaric acid and dehydroabietic acid, and because of containing a short double bond, it has high activity and can be mutually converted under the action of heat. The most important component of the resin acid is abietic acid, the content of which is more than 50 wt%, and the rosin is transparent, hard and brittle solid, and is dissolved in most organic solvents such as ethanol, diethyl ether, methanol, toluene, petroleum ether, turpentine and the like, and the solubility in water is extremely low. The rosin has good compatibility with various macromolecules such as SBS, natural rubber and SIS, has good viscosity, can be used for preparing various hot melt adhesives, but can be crystallized when used in the hot melt adhesives, so that the compatibility with the rubber is poor, the performance is reduced, and the rosin ester can be obtained by modifying the carboxyl of the rosin.

In some preferred embodiments, the rosin is purchased from Jinxin, N.E.Chemicals, Inc.

In some preferred embodiments, the sugar alcohol comprises 15 to 25 wt% of the rosin; preferably, the sugar alcohol comprises 20 wt% of the rosin.

In some preferred embodiments, the sugar alcohol is selected from one or more of maltitol, lactitol, trehalose, glucose; preferably, the sugar alcohol is trehalose.

In some preferred embodiments, the catalyst comprises 0.1 to 0.3 wt% of the rosin resin; preferably, the catalyst comprises 0.2 wt% of the rosin resin.

The catalyst in the present invention includes, but is not limited to, basic catalyst (calcium oxide, calcium hydroxide, lithium hydroxide), protonic acid catalyst (sulfuric acid, phosphoric acid, hypophosphorous acid), solid acid catalyst (zinc oxide, zinc chloride), inorganic salt catalyst (lithium carbonate, phosphite).

In some preferred embodiments, the catalyst is zinc oxide; preferably, the zinc oxide is purchased from Xuancheng Crystal New materials Co.

The applicant found that by using the rosin resin and hydrocarbon resin of the present invention as a tackifying resin, in combination with other components of the hot melt pressure sensitive adhesive, the open time and adhesive strength at low temperature can be improved, which is probably because, by the reaction of rosin and sugar alcohol, especially trehalose, the hydroxyl groups of the sugar alcohol and the carboxyl groups of the rosin are subjected to esterification reaction to produce rosin ester, and because of the main component of rosin, the structure of the resin acid is a three-membered ring phenanthrene skeleton structure, which has high steric hindrance, so that rosin tends to react with the hydroxyl groups that are farther away from the cyclic skeleton of the sugar alcohol, thereby forming a rosin resin acid-sugar alcohol-rosin resin structure, which has large rigid units and is regularly arranged, and because the obtained rosin resin and the isoprene segment of SIS have good compatibility, when the hot melt pressure sensitive adhesive of the present invention is used for the adhesion of a mattress, under the action of a large rigid unit and a regular structure, the rosin resin drives polyisoprene chain segments to be regularly arranged, so that the viscosity of the hot-melt pressure-sensitive adhesive system is reduced, the open time is longer, and the rosin resin and the hydrocarbon resin are jointly used as tackifying resins, so that the wettability and the cohesive strength of the hot-melt adhesive can be further increased, and the hot-melt adhesive still has good bonding strength at low temperature.

The applicant has found that when the amount of the rosin resin of the present invention is too large, the initial tack and the permanent tack are reduced to affect the adhesive strength due to steric hindrance of the rosin resin and a problem of phase separation caused by partial incompatibility of the rosin resin.

Softening agent

The softener is an assistant for improving the processing performance and the use performance of the elastomer, and can increase the plasticity of the elastomer, reduce the viscosity of the elastomer and the temperature during mixing, improve the dispersibility and the mixing property, and improve the tensile strength, the elongation and the wear resistance of the elastomer. The softener is not particularly limited in the present invention, and various softeners known to those skilled in the art can be used.

In some embodiments, the softening agent is selected from at least one of naphthenic oil, white oil, paraffin. Such as white oil-100, white oil-500N, naphthenic oil-4006, 58-paraffin, etc.; the preferable softener is white oil-100; the preferred white oil-100 is available from petroleum chemical company Limited, silver, Mooney.

Antioxidant agent

The antioxidant is a substance capable of delaying the chemical combination and oxidation of high polymers, thereby prolonging the service life of products. The unsaturated rubber phase of thermoplastic elastomers such as SBS and SIS is subject to thermal oxidative aging in air under the action of air, ozone and ultraviolet rays, and the aging is more serious especially when hot melt adhesives are prepared and melt coated at high temperature. Secondly, the tackifying resin is stirred at high temperature, and the stability is poor, so that an antioxidant needs to be added. The present invention is not limited to specific antioxidants, including, but not limited to, Yuansheng-1010, Huan-2006, Lianlong-329, Lianlong-326, Huan-801, AC-8, zinc oxide, etc.

The second aspect of the invention provides a preparation method of the special hot-melt pressure-sensitive adhesive for the 3D mattress composite material, which comprises the following steps:

Examples

The present invention will be specifically described below by way of examples. It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention.

In addition, the starting materials used are all commercially available products, unless otherwise specified.

A1: thermoplastic elastomer

The thermoplastic elastomer is SIS with the mark of SIS-1106 and is purchased from the ba ling petrochemical; the SIS-1106 has an S/I of 16/84 and a melt mass flow rate of 11g/10 min.

A2: thermoplastic elastomer

The thermoplastic elastomer is SIS, the grade is SIS-1128, and the thermoplastic elastomer is purchased from the potentilla petrochemical industry; the SIS-1106 has an S/I of 15/85 and a melt mass flow rate of 22g/10 min.

A3: thermoplastic elastomer

The thermoplastic elastomer is SBS with the brand number of SBS-YH188 and purchased from the tomb petrochemical; the SBS-YH188 had an S/B of 40/60 and a melt mass flow rate of 6g/10 min.

A4: thermoplastic elastomer

The thermoplastic elastomer is SBS with the brand number of SBS-YH796 and purchased from the tomb petrochemical industry; the SBS-YH796 had an S/B of 23/77 and a melt mass flow rate of 2g/10 min.

B1: tackifying resins

The tackifying resin is hydrogenated C5 petroleum resin with the mark of E5400 and is purchased from Exxon Mobil.

B2: tackifying resins

The tackifying resin is C5 petroleum resin with the mark of E1304 and is purchased from Exxon Mobil.

B3: tackifying resins

The tackifying resin is rosin resin, and the preparation method of the rosin resin comprises the following steps:

under the condition of nitrogen, heating the rosin and a catalyst to 260 ℃, adding sugar alcohol, and reacting for 7 hours to obtain the rosin resin; the catalyst is composed of a catalyst, a sugar alcohol and a catalyst, wherein the sugar alcohol accounts for 20 wt% of the rosin, the catalyst accounts for 0.2 wt% of the rosin resin, the sugar alcohol is trehalose, and the catalyst is zinc oxide.

The rosin was purchased from Jinyuan chemical Co., Ltd.

The zinc oxide was purchased from Xuancheng crystal-like new materials, Inc.

B4: tackifying resins

under the condition of nitrogen, heating the rosin and a catalyst to 260 ℃, adding sugar alcohol, and reacting for 7 hours to obtain the rosin resin; the sugar alcohol accounts for 20 wt% of the rosin, the catalyst accounts for 0.2 wt% of the rosin resin, the sugar alcohol is lactitol, and the catalyst is zinc oxide.

The rosin was purchased from Jinyuan chemical Co., Ltd.

The zinc oxide was purchased from Xuancheng crystal-like new materials, Inc.

B5: tackifying resins

under the condition of nitrogen, heating the rosin and a catalyst to 260 ℃, adding glycerol, and reacting for 7 hours to obtain the rosin resin; the glycerol accounts for 20 wt% of the rosin, the catalyst accounts for 0.2 wt% of the rosin resin, and the catalyst is zinc oxide.

The rosin was purchased from Jinyuan chemical Co., Ltd.

The zinc oxide was purchased from Xuancheng crystal-like new materials, Inc.

C: softening agent

The softener is white oil-100, which is purchased from petroleum chemical company Limited in silver market.

D: antioxidant agent

The antioxidant is Yuansheng-1010, available from Yuansheng chemical Co., Ltd.

TABLE 1

Examples	1	2	3	4	5	6	7	8	9
										A1	29	23	27		27	27	27	27	27
A2				27
										A3	11	7	8	8		8	8	8	8
A4					8
										B1	38	43	39	39	39		39	39	25
B2						39
										B3	12	17	16	16	16	16			25
B4							16
										B5								16
C	10	20	13	13	13	13	13	13	13
										D	1	2	1	1	1	1	1	1	1

Embodiments 1 to 9 provide a hot-melt pressure-sensitive adhesive special for a 3D mattress composite material, wherein a formula of the structural adhesive suitable for a high-speed paper diaper production line is shown in table 1, and the formula is used in parts by weight.

Embodiments 1 to 9 provide a preparation method of a hot-melt pressure-sensitive adhesive special for a 3D mattress composite material, comprising the following steps:

(1) adding a softening agent into a reaction kettle, stirring and heating to 130 ℃, then adding tackifying resin and an antioxidant, introducing nitrogen, heating to 170 ℃, and maintaining the temperature for 25 min;

(2) and (2) adding a thermoplastic elastomer into the reaction system in the step (1), reacting for 50min, vacuumizing to remove bubbles, and discharging to obtain the hot-melt pressure-sensitive adhesive.

Evaluation of Performance

1. Opening time: the hot-melt pressure-sensitive adhesive special for the 3D mattress composite material provided in examples 1 to 9 was tested for 0 ℃ opening time according to HGT3716-2003, and the results are shown in Table 2.

2. Peel strength: the hot-melt pressure-sensitive adhesive special for the 3D mattress composite material provided by the embodiments 1-9 is tested for peel strength at 0 ℃ and 25 ℃ according to GBT2792-2014, and the results are shown in Table 2.

Table 2 characterization test of properties

The test results in table 2 show that the hot melt pressure sensitive adhesive special for the 3D mattress composite material provided by the invention still has good open time and peel strength at low temperature, and is suitable for the production of 3D mattresses at low temperature.

The foregoing examples are merely illustrative and serve to explain some of the features of the method of the present invention. The appended claims are intended to claim as broad a scope as is contemplated, and the examples presented herein are merely illustrative of selected implementations in accordance with all possible combinations of examples. Accordingly, it is applicants' intention that the appended claims are not to be limited by the choice of examples illustrating features of the invention. Also, where numerical ranges are used in the claims, subranges therein are included, and variations in these ranges are also to be construed as possible being covered by the appended claims.

Claims

1. The hot-melt pressure-sensitive adhesive special for the 3D mattress composite material is characterized by comprising, by weight, 30-40 parts of a thermoplastic elastomer, 50-60 parts of a tackifying resin, 10-20 parts of a softening agent and 1-2 parts of an antioxidant, wherein the thermoplastic elastomer comprises at least one of SBS, SIS and SEBS.

2. The hot melt pressure sensitive adhesive special for the 3D mattress composite according to claim 1, wherein the thermoplastic elastomer comprises SIS and SBS, and the weight ratio of SIS to SBS is 1: (0.3-0.4).

3. The special hot-melt pressure-sensitive adhesive for the 3D mattress composite material according to claim 2, wherein the S/I of the SIS is 10/90-20/80, and the melt mass flow rate is 10-15 g/10 min.

4. The special hot-melt pressure-sensitive adhesive for the 3D mattress composite material according to claim 2, wherein the S/B of SBS is 30/70-40/60, and the melt mass flow rate is 5-10 g/10 min.

5. The hot-melt pressure-sensitive adhesive special for the 3D mattress composite material according to any one of claims 1 to 4, wherein the tackifying resin is one or more selected from rosin resin, terpene resin, hydrocarbon resin and condensation resin.

6. The hot-melt pressure-sensitive adhesive special for the 3D mattress composite material according to claim 5, wherein the tackifying resin comprises hydrocarbon resin and rosin resin, and the weight parts of the hydrocarbon resin and the rosin resin are 1: (0.3-0.5).

7. The hot melt pressure sensitive adhesive special for the 3D mattress composite material according to claim 6, wherein the preparation method of the rosin resin comprises the following steps:

8. The special hot-melt pressure-sensitive adhesive for the 3D mattress composite material according to claim 7, wherein the sugar alcohol accounts for 15-25 wt% of the rosin.

9. The hot melt pressure sensitive adhesive special for the 3D mattress composite according to claim 7, wherein the sugar alcohol is selected from one or more of maltitol, lactitol, trehalose and glucose.

10. The preparation method of the special hot-melt pressure-sensitive adhesive for the 3D mattress composite material according to any one of claims 1 to 9, characterized by comprising the following steps: