CN110253978B - Polymer heat preservation silica gel synthetic leather - Google Patents

Polymer heat preservation silica gel synthetic leather Download PDF

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Publication number
CN110253978B
CN110253978B CN201910683724.3A CN201910683724A CN110253978B CN 110253978 B CN110253978 B CN 110253978B CN 201910683724 A CN201910683724 A CN 201910683724A CN 110253978 B CN110253978 B CN 110253978B
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layer
heat
silica gel
synthetic leather
structural layer
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CN110253978A (en
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庄加松
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Fengyang Jiasong New Materials Co ltd
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Fengyang Jiasong New Materials Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/245—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it being a foam layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • B32B2255/102—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer synthetic resin or rubber layer being a foamed layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0207—Materials belonging to B32B25/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable

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  • Laminated Bodies (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)

Abstract

The invention discloses a high-molecular heat-preservation silica gel synthetic leather which comprises a base cloth layer and a heat-resistant layer attached to the base cloth layer, wherein closed pores are uniformly distributed in the heat-resistant layer, and the porosity of the heat-resistant layer is 70-90%; the moisture resistance layer is attached to the heat resistance layer and comprises a first structural layer and a second structural layer which are mutually bonded, and a dense polymer network surface is formed on the bonding surface of the first structural layer and the second structural layer; and the silica gel leather surface layer is attached to the moisture barrier layer. According to the invention, the heat-resistant layer and the moisture-resistant layer are added in the silica gel synthetic leather, wherein closed pores are fully distributed in the heat-resistant layer, a dense polymer network surface is formed in the moisture-resistant layer, the moisture resistance factor reaches a level above 23000, and further the overall heat conductivity coefficient of the silica gel synthetic leather is reduced to 0.031W/(m.k), compared with the traditional heat-insulating synthetic leather which simply pursues a heat-resistant effect and neglects temperature transfer brought by a moisture-permeable process, the heat-insulating effect of the silica gel synthetic leather is more prominent.

Description

Polymer heat preservation silica gel synthetic leather
Technical Field
The invention relates to the technical field of silica gel synthetic leather, in particular to high-molecular heat-preservation silica gel synthetic leather.
Background
The synthetic leather which is the mainstream in the market is a product formed by coating resin slurry such as PU, PVC and the like on a base material. In recent years, silica gel synthetic leather has appeared in the market, which is a composite material prepared by using textiles as a base material and carrying out impregnation of silica gel slurry and coating finishing. Compared with PU synthetic leather popular in the market, the synthetic leather made of silica gel has the excellent characteristics of environmental protection, no hydrolysis and the like, but also has some defects, such as poor heat preservation effect and relatively limited application of the silica gel synthetic leather.
Disclosure of Invention
The invention aims to provide a high-molecular heat-preservation silica gel synthetic leather, which overcomes the defect of poor heat-preservation effect of the traditional silica gel synthetic leather.
The invention realizes the purpose through the following technical scheme:
a high-molecular insulating silica gel synthetic leather comprises
A base fabric layer is arranged on the base fabric layer,
the heat-resistant layer is attached to the base cloth layer, closed pores are uniformly distributed in the heat-resistant layer, and the porosity of the heat-resistant layer is 70-90%;
the moisture resistance layer is attached to the heat resistance layer and comprises a first structural layer and a second structural layer which are mutually bonded, and a dense polymer network surface is formed on the bonding surface of the first structural layer and the second structural layer;
and the silica gel leather surface layer is attached to the moisture barrier layer.
The further improvement is that the base cloth layer is made of one of high-density needle-punched non-woven fabric, polyester fabric or superfine fiber synthetic leather base cloth.
The further improvement is that the material of the heat-resistant layer is foamed rubber.
The improved structure is characterized in that the first structural layer is made of rubber materials, the second structural layer is made of polyvinyl chloride materials, an activating agent capable of enabling the surfaces to generate activated free radicals is coated on the butt joint surfaces of the first structural layer and the second structural layer in advance, the first structural layer and the second structural layer are bonded through a self-crosslinking organic silicon modified adhesive, and when the crosslinking organic silicon modified adhesive is in contact with the free radicals on the surfaces of the first structural layer and the second structural layer, a dense polymer network surface is formed through reaction.
The principle of forming a compact polymer network surface is as follows: silicon in the self-crosslinking organic silicon modified adhesive reacts with activated free radicals on the surfaces of the first structural layer and the second structural layer to form a compact surface, so that effective surface bonding is realized, and meanwhile, the self-crosslinking organic silicon modified adhesive also performs crosslinking reaction under the action of the free radicals, oxygen in air and moisture to form a compact polymer network surface.
The further improvement is that the dosage of the activating agent is 2.0-3.5g/m2The activating agent is formed by mixing dicumyl peroxide and dibutyltin oxide, and the mass ratio of the dicumyl peroxide to the dibutyltin oxide is 3: 1.
The further improvement is that the self-crosslinking organic silicon modified adhesive is organic silicon modified acrylic latex.
The further improvement lies in that the raw materials for preparing the silica gel leather surface layer comprise 20-30 parts of silicone rubber base rubber, 6-10 parts of rosin resin, 2-5 parts of nano nylon powder, 3-5 parts of paraffin oil, 2-4 parts of tea oil, 3-5 parts of tackifier and 2-6 parts of coupling agent.
The invention has the beneficial effects that: the heat-resistant layer and the moisture-resistant layer are added in the silica gel synthetic leather, closed pores are fully distributed in the heat-resistant layer, a dense polymer network surface is formed in the moisture-resistant layer, the moisture resistance factor reaches a level above 23000, the overall heat conductivity coefficient of the silica gel synthetic leather is further reduced to 0.031W/(m.k), and compared with the traditional heat-insulating synthetic leather which simply pursues a heat-resistant effect and neglects temperature transfer brought by a moisture-permeable process, the heat-insulating effect is more prominent.
In addition, the synthetic leather has good overall resilience due to the large porosity of the heat-resistant layer; add paraffin oil, tea-seed oil and rosin resin in silica gel leather surface course, not only environmental protection but also help promoting the compliance of silica gel synthetic leather, promote and feel, the nanometer nylon powder of adding helps promoting its wearability.
Detailed Description
The present application is described in further detail below with reference to examples, and it should be noted that the following detailed description is provided for further explanation of the present application and should not be construed as limiting the scope of the present application, and that certain insubstantial modifications and adaptations of the present application may be made by those skilled in the art based on the above-mentioned disclosure.
Example 1
A high-molecular insulating silica gel synthetic leather comprises
(1) The base cloth layer is made of high-density needle-punched non-woven fabric;
(2) the heat-resistant layer is attached to the base cloth layer, the heat-resistant layer is made of foamed rubber, closed pores are uniformly distributed in the heat-resistant layer, and the porosity of the heat-resistant layer is 70%;
(3) the moisture-resistant layer is attached to the heat-resistant layer and comprises a first structural layer and a second structural layer which are mutually bonded, wherein the first structural layer is made of rubber materials, the second structural layer is made of polyvinyl chloride materials, the butt joint surfaces of the first structural layer and the second structural layer are pre-coated with an activating agent capable of enabling the surfaces to generate activated free radicals, and the using amount of the activating agent is 2.0g/m2The activating agent is formed by mixing dicumyl peroxide and dibutyltin oxide, and the mass ratio of the dicumyl peroxide to the dibutyltin oxideThe ratio of the organic silicon modified acrylic latex to the free radicals on the surfaces of the first structural layer and the second structural layer is 3:1, and the organic silicon modified acrylic latex and the free radicals on the surfaces of the first structural layer and the second structural layer are bonded together and react to form a compact polymer network surface;
(4) the silica gel leather surface layer is attached to the moisture-blocking layer, and the silica gel leather surface layer is prepared from 20 parts of silicone rubber-based adhesive, 6 parts of rosin resin, 2 parts of nano nylon powder, 3 parts of paraffin oil, 2 parts of tea oil, 3 parts of tackifier and 2 parts of coupling agent.
Example 2
A high-molecular insulating silica gel synthetic leather comprises
(1) A base cloth layer, wherein the base cloth layer is made of polyester fabric;
(2) the heat-resistant layer is attached to the base cloth layer, the material of the heat-resistant layer is foamed rubber, closed pores are uniformly distributed in the heat-resistant layer, and the porosity of the heat-resistant layer is 80%;
(3) the moisture-resistant layer is attached to the heat-resistant layer and comprises a first structural layer and a second structural layer which are mutually bonded, wherein the first structural layer is made of rubber materials, the second structural layer is made of polyvinyl chloride materials, the butt joint surfaces of the first structural layer and the second structural layer are pre-coated with an activating agent capable of enabling the surfaces to generate activated free radicals, and the using amount of the activating agent is 2.8g/m2The activating agent is formed by mixing dicumyl peroxide and dibutyltin oxide, the mass ratio of the dicumyl peroxide to the dibutyltin oxide is 3:1, the first structural layer and the second structural layer are bonded through organic silicon modified acrylic latex, and when the organic silicon modified acrylic latex is contacted with free radicals on the surfaces of the first structural layer and the second structural layer, the organic silicon modified acrylic latex reacts to form a compact polymer network surface;
(4) the silica gel leather surface layer is attached to the moisture-blocking layer, and the silica gel leather surface layer is prepared from 25 parts of silicone rubber-based adhesive, 8 parts of rosin resin, 3 parts of nano nylon powder, 4 parts of paraffin oil, 3 parts of tea oil, 4 parts of tackifier and 4 parts of coupling agent.
Example 3
A high-molecular insulating silica gel synthetic leather comprises
(1) The base cloth layer is made of superfine fiber synthetic leather base cloth;
(2) the heat-resistant layer is attached to the base cloth layer, the heat-resistant layer is made of foamed rubber, closed pores are uniformly distributed in the heat-resistant layer, and the porosity of the heat-resistant layer is 90%;
(3) the moisture-resistant layer is attached to the heat-resistant layer and comprises a first structural layer and a second structural layer which are mutually bonded, wherein the first structural layer is made of rubber materials, the second structural layer is made of polyvinyl chloride materials, the butt joint surfaces of the first structural layer and the second structural layer are pre-coated with an activating agent capable of enabling the surfaces to generate activated free radicals, and the using amount of the activating agent is 3.5g/m2The activating agent is formed by mixing dicumyl peroxide and dibutyltin oxide, the mass ratio of the dicumyl peroxide to the dibutyltin oxide is 3:1, the first structural layer and the second structural layer are bonded through organic silicon modified acrylic latex, and when the organic silicon modified acrylic latex is contacted with free radicals on the surfaces of the first structural layer and the second structural layer, the organic silicon modified acrylic latex reacts to form a compact polymer network surface;
(4) the silica gel leather surface layer is attached to the moisture-blocking layer, and the silica gel leather surface layer is prepared from 30 parts of silicone rubber-based rubber, 10 parts of rosin resin, 5 parts of nano nylon powder, 5 parts of paraffin oil, 4 parts of tea oil, 5 parts of tackifier and 6 parts of coupling agent.
Comparative example 1
The structure of the macromolecular heat-preservation silica gel synthetic leather is basically the same as that in the embodiment 2, and the only difference is that closed pores are not distributed inside the heat-resistant layer.
Comparative example 2
The structure of the polymer thermal insulation silica gel synthetic leather is basically the same as that of the synthetic leather in the embodiment 2, and the only difference is that the moisture-resistant layer is only formed by ordinary bonding of a rubber material and a polyvinyl chloride material, and a compact polymer network surface is formed without activation.
Comparative example 3
The silica gel synthetic leather is common silica gel synthetic leather purchased from the market.
And performing performance tests on the silica gel synthetic leather in the above embodiments and the comparative examples, wherein the performance tests comprise resilience, softness, moisture resistance and thermal conductivity. The moisture resistance is obtained by calculating the moisture resistance factor by measuring the weight of water vapor transmitted per unit area and unit time when the partial pressure of water vapor on both sides of the synthetic leather is 1Pa, with reference to the specification of GB/T17794. Wherein, the abrasion resistance is that a circular grinding wheel is contacted with the synthetic leather, the load is 600g, the rotating speed is 100rpm, the abrasion test is carried out, the surface temperature of the synthetic leather is always ensured below 50 ℃ in the abrasion process until the surface of the synthetic leather is cracked, and the number of turns is recorded.
Figure BDA0002145635080000061
The heat-insulating layer and the moisture-resisting layer are added in the silica gel synthetic leather, wherein closed pores are distributed in the heat-insulating layer, a dense high-molecular network surface is formed in the moisture-resisting layer, the moisture resistance factor of the silica gel synthetic leather reaches a level above 23000, the overall heat conductivity coefficient of the silica gel synthetic leather is further reduced to 0.031W/(m.k), and compared with the traditional heat-insulating synthetic leather which simply pursues a heat-insulating effect and neglects temperature transfer brought by a moisture-permeable process, the heat-insulating effect of the silica gel synthetic leather is more prominent. In addition, the synthetic leather has good overall resilience due to the large porosity of the heat-resistant layer; add paraffin oil, tea-seed oil and rosin resin in silica gel leather surface course, not only environmental protection but also help promoting the compliance of silica gel synthetic leather, promote and feel, the nanometer nylon powder of adding helps promoting its wearability.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Claims (5)

1. The utility model provides a polymer heat preservation silica gel synthetic leather which characterized in that: comprises that
A base fabric layer is arranged on the base fabric layer,
the heat-resistant layer is attached to the base cloth layer, closed pores are uniformly distributed in the heat-resistant layer, and the porosity of the heat-resistant layer is 70-90%;
the moisture-resistant layer is attached to the heat-resistant layer and comprises a first structural layer and a second structural layer which are mutually bonded, a compact polymer network surface is formed on the bonding surface of the first structural layer and the second structural layer, the first structural layer is made of rubber materials, the second structural layer is made of polyvinyl chloride materials, an activating agent capable of enabling the surfaces to generate activated free radicals is pre-coated on the butt joint surface of the first structural layer and the second structural layer, the first structural layer and the second structural layer are bonded through a self-crosslinking organic silicon modified adhesive, and when the crosslinking organic silicon modified adhesive is contacted with the free radicals on the surfaces of the first structural layer and the second structural layer, the reaction is carried out to form the compact polymer network surface;
the silica gel leather surface layer is attached to the moisture-blocking layer, and the preparation raw materials of the silica gel leather surface layer comprise 20-30 parts of silicone rubber base rubber, 6-10 parts of rosin resin, 2-5 parts of nano nylon powder, 3-5 parts of paraffin oil, 2-4 parts of tea oil, 3-5 parts of tackifier and 2-6 parts of coupling agent.
2. The polymer heat-insulating silica gel synthetic leather according to claim 1, which is characterized in that: the base cloth layer is made of one of high-density needle-punched non-woven fabric, polyester fabric or superfine fiber synthetic leather base cloth.
3. The polymer heat-insulating silica gel synthetic leather according to claim 1, which is characterized in that: the heat-resistant layer is made of foamed rubber.
4. The polymer heat-insulating silica gel synthetic leather according to claim 1, which is characterized in that: the dosage of the activating agent is 2.0-3.5g/m2The activating agent is formed by mixing dicumyl peroxide and dibutyltin oxide, and the mass ratio of the dicumyl peroxide to the dibutyltin oxide is 3: 1.
5. The polymer heat-insulating silica gel synthetic leather according to claim 1, which is characterized in that: the self-crosslinking organic silicon modified adhesive is organic silicon modified acrylic latex.
CN201910683724.3A 2019-07-26 2019-07-26 Polymer heat preservation silica gel synthetic leather Active CN110253978B (en)

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CN203787664U (en) * 2014-01-23 2014-08-20 广州番禺电缆集团有限公司 Waterproof and moistureproof structure of cable grounding part
CN205636304U (en) * 2015-12-09 2016-10-12 福建华普化学有限公司 Fire -retardant synthetic leather of environmental protection
CN108894006A (en) * 2018-07-13 2018-11-27 广东天跃新材料股份有限公司 Using foamed silica gel as the silicon rubber synthetic leather and its manufacturing technology of base
CN109393917A (en) * 2018-11-06 2019-03-01 广东雅丽斯佳纺织科技有限公司 A kind of mute noise reduction carpet and preparation method thereof

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