阅读说明：本技术 一种热解封阻燃柔性复合材料 (Thermal-sealing flame-retardant flexible composite material ) 是由 易怀强 郑磊 刘圣千 于 2019-10-18 设计创作，主要内容包括：本发明涉及一种功能复合材料领域,尤其涉及一种热解封阻燃柔性复合材料,所述复合材料为多层结构,由外到内依次为耐侯层、阻气层、承力层和预涂层；所述耐侯层、阻气层和承力层间均采用胶黏剂层压复合的方式粘接,所述预涂层采用流平涂覆或高压喷涂的方式在承力层内侧制备。本发明可实现阻气、阻燃和热解封等功能于一体的柔性层压复合材料,能够快速热压粘接,材料本体和粘接部位均有较高的热稳定性和结构稳定性等。本发明所提供的热解封阻燃柔性复合材料,简便可行、快速有效,可根据实际需要进行热解封填料和阻燃材料的自由搭配,提升材料的抗拉伸性能、耐撕裂性能和阻气性能。(The invention relates to the field of functional composite materials, in particular to a thermal-sealing flame-retardant flexible composite material which is of a multilayer structure and sequentially comprises a weather-resistant layer, a gas barrier layer, a bearing layer and a precoating layer from outside to inside; the weather-resistant layer, the gas barrier layer and the bearing layer are bonded in a laminating and compounding mode of an adhesive, and the precoating layer is prepared on the inner side of the bearing layer in a leveling coating or high-pressure spraying mode. The flexible laminated composite material can realize the functions of air resistance, flame retardance, thermal sealing and the like, can be quickly bonded by hot pressing, and has high thermal stability, structural stability and the like of a material body and a bonding part. The thermal-sealing flame-retardant flexible composite material provided by the invention is simple, convenient, feasible, rapid and effective, can be freely matched with a thermal-sealing filler and a flame-retardant material according to actual needs, and improves the tensile resistance, the tear resistance and the gas barrier property of the material.)

1. A thermal-sealing flame-retardant flexible composite material is characterized in that the composite material is of a multilayer structure and sequentially comprises a weather-resistant layer, a gas barrier layer, a bearing layer and a precoating layer from outside to inside; the weather-resistant layer, the gas barrier layer and the bearing layer are bonded in a laminating and compounding mode of an adhesive, and the precoating layer is prepared on the inner side of the bearing layer in a leveling coating or high-pressure spraying mode.

2. A thermal unblocking flame retardant flexible composite material according to claim 1, characterized in that: the weather-resistant layer material is PVF, PVDF or PTFE, the force-bearing layer is Kevlar, Vectran, Nylon, PBO or UHMWPE fiber fabric, and the precoating layer is a functional adhesive composite system.

3. A thermal unblocking flame retardant flexible composite material according to claim 1, characterized in that: comprises an adhesive, a curing agent or a chain extender, a flame retardant and a black filler.

4. A thermal unblocking flame retardant flexible composite material according to claim 3, characterized in that: the adhesive is selected from polyurethanes and/or isocyanates.

5. A thermal unblocking flame retardant flexible composite material according to claim 3, characterized in that: the curing agent or the chain extender is filled in a microcapsule form.

6. A thermal unblocking flame retardant flexible composite material according to claim 3, characterized in that: the flame retardant is selected from inorganic flame retardants or organic phosphorus flame retardants, and at least comprises N, P flame retardants or flame retardant elements of more than two halogens.

7. A thermal unblocking flame retardant flexible composite material according to claim 3, characterized in that: the black filler is selected from nanoscale carbon black or/and graphene.

Technical Field

The invention relates to the field of functional composite materials, in particular to a thermal-sealing flame-retardant flexible composite material.

Background

The flexible composite material for the inflatable structure bag body generally comprises a light flexible composite material for an aerostat and a flexible composite material for an inflatable building. At present, the flexible rubber or laminated composite material for the aerostat has poor flame retardant effect; the inflatable building material generally adopts the mode of PVC and the like containing halogen or other fillers to coat the fabric, and the structure has higher flame retardant effect, but has poorer air tightness, higher surface density and low bonding strength among materials. Many flexible composites require flame retardancy, and the polymer precoat may contain more flame retardant chemicals than a simple finish of the fabric. Most commonly used functional flexible composites are nylon, polyester and cotton fabrics, which are not flame resistant and would normally ignite and burn if not flame resistant. There are some fabrics with flame-retardant property, and these products are expensive, which limits their popularization and application. The flexible composite material for the aerostat has catastrophic safety influence once an accident occurs under the extreme environment with high ozone concentration and serious high-low temperature alternation. The light flexible composite material is functionalized, the comprehensive performance of the material is improved, the application fields of the flexible composite material and the flexible bag body product thereof can be further expanded, and the comprehensive performance such as the safety of the aerostat is improved.

The main disadvantages of flame retardant compounds are high cost, problems associated with mixing, toxicity of the fumes released on combustion and recent environmental concerns. The flexible composite materials containing flame retardants are handled with particular care by the end of their useful life, especially for products containing chlorine, bromine and heavy metals. Alternative chemical systems have been sought for a time, but have so far had limited success.

The invention researches and realizes a flexible laminated composite material integrating functions of gas barrier, flame retardance, thermal sealing and the like, can be quickly bonded by hot pressing, has higher thermal stability, structural stability and the like of a material body and a bonding part, can improve the processing efficiency of the flexible composite material, and further expands the comprehensive performance of the flexible composite material.

Disclosure of Invention

The technical problems solved by the invention are as follows:

the invention provides a thermal-sealing flame-retardant flexible composite material, which is a flexible laminated composite material integrating functions of gas barrier, flame retardance, thermal sealing and the like, can be quickly bonded by hot pressing, has higher thermal stability, structural stability and the like of a material body and a bonding part, can improve the processing efficiency of the flexible composite material, and further expands the comprehensive performance of the flexible composite material.

The technical scheme adopted by the invention is as follows:

a thermal-sealing flame-retardant flexible composite material is of a multilayer structure and sequentially comprises a weather-resistant layer, a gas barrier layer, a bearing layer and a precoating layer from outside to inside; the weather-resistant layer, the gas barrier layer and the bearing layer are bonded in a laminating and compounding mode of an adhesive, and the precoating layer is prepared on the inner side of the bearing layer in a leveling coating or high-pressure spraying mode.

Furthermore, the weather-resistant layer material is PVF, PVDF or PTFE, the force-bearing layer is Kevlar, Vectran, Nylon, PBO or UHMWPE fiber fabric, and the precoating layer is a functional adhesive composite system.

Further, an adhesive, a curing agent or chain extender, a flame retardant and a black filler are included.

Further, the adhesive is selected from polyurethanes and/or isocyanates.

Further, the curing agent or chain extender is filled in a microcapsule form.

Further, the flame retardant is selected from inorganic flame retardants or organic phosphorus flame retardants, and at least comprises N, P flame retardants or flame retardant elements of more than two halogens.

Further, the black filler is selected from nanoscale carbon black or/and graphene.

The invention has the beneficial effects that:

the thermal-sealing flame-retardant flexible composite material provided by the invention is simple, convenient, feasible, rapid and effective, can be freely matched with a thermal-sealing filler and a flame-retardant material according to actual needs, improves the tensile resistance, the tear resistance and the gas barrier property of the material, reduces the processing and splicing difficulty of the capsule body of the flexible composite material, and has higher structural stability and thermal stability.

Drawings

FIG. 1: a schematic structural diagram of a thermal-sealing flame-retardant flexible composite material,

wherein: 1. weather resistant layer, 2 gas barrier layer, 3 force bearing layer, and 4 precoat layer.

Detailed Description

The invention provides a thermal-sealing flame-retardant flexible composite material which is characterized by comprising a weather-resistant layer, a gas barrier layer, a force-bearing layer and a precoating layer. By adjusting the composition of the thermal deblocking filler and the flame retardant filler, the effects of rapid thermal deblocking and synergistic flame retardance can be realized.

The present invention is further illustrated by the following specific examples.