CN-121990786-A - Material for increasing thermal insulation performance of wooden door and preparation method thereof

CN121990786ACN 121990786 ACN121990786 ACN 121990786ACN-121990786-A

Abstract

The invention relates to the technical field of wooden door manufacturing, and provides a material for increasing thermal insulation performance of wooden doors, which comprises an inorganic thermal insulation filler, an organic bonding base material and a composite cross-linking agent, wherein the inorganic thermal insulation filler adopts a composite fiber-porous particle system, a three-dimensional interweaved thermal insulation framework is formed by modified glass fibers, sepiolite fibers and expanded perlite, the modified glass fibers are E-grade long glass fibers which are compositely modified by a strong base-silane coupling agent, the organic bonding base material adopts an environment-friendly regenerated polymer for wrapping the inorganic thermal insulation filler, and the composite cross-linking agent is compounded by di-tert-butyl peroxyisopropyl benzene and triallyl isocyanurate according to a mass ratio of 2:1 and is used for enhancing the cross-linking density of an organic phase. The material realizes the synergistic optimization of heat preservation and light weight, has compact interface combination and excellent mechanical property, and is not easy to be layered and damaged. The material is environment-friendly, free of harmful release, simple in preparation process, low in energy consumption, strong in adaptability, capable of being accurately attached to the wooden door, and good in durability, and the thermal insulation and energy conservation effects of the wooden door are remarkably improved.

Inventors

XU YUXIA
HE LINCHANG
XU JIANCHENG
ZHOU WENCHEN
ZHU LINJUAN

Assignees

浙江皇世家居有限公司

Dates

Publication Date: 20260508
Application Date: 20260204

Claims (10)

1. A material for increasing the thermal insulation of a wooden door, comprising: The inorganic heat-insulating filler adopts a composite fiber-porous particle system, and a three-dimensional interweaved heat-insulating framework is formed by modified glass fibers, sepiolite fibers and expanded perlite, wherein the modified glass fibers are E-grade long glass fibers which are compositely modified by a strong base-silane coupling agent; an organic bonding base material which adopts an environment-friendly regenerated polymer and is used for wrapping inorganic heat-insulating filler; the compound cross-linking agent is formed by compounding di-tert-butyl peroxy isopropyl benzene and triallyl isocyanurate according to the mass ratio of 2:1 and is used for enhancing the cross-linking density of an organic phase; Modifying aids including polyvinyl alcohol, composite cellulose, modified diatomaceous earth and magnesium oxide; the composite material comprises the following raw materials in parts by weight: 25-35 parts of modified glass fiber, 18-25 parts of sepiolite fiber, 12-22 parts of expanded perlite, 8-12 parts of regenerated HDPE, 3-6 parts of composite cross-linking agent, 10-15 parts of polyvinyl alcohol, 5-8 parts of modified diatomite, 6-10 parts of composite cellulose, 3-6 parts of magnesium oxide and 250-550 parts of deionized water.
2. The material for increasing the thermal insulation performance of the wooden door according to claim 1, wherein the expansion multiple of the expanded perlite is 6-8 times, the particle size is 60-80 mu m, the regenerated HDPE is an environment-friendly regenerated material obtained by recycling and granulating high-pressure polyethylene films, and the melt flow rate is 2.5-3.0 g/10min.
3. The material for increasing the thermal insulation performance of the wooden door according to claim 1, wherein the composite cellulose is compounded by hydroxymethyl cellulose and hydroxyethyl cellulose according to a mass ratio of 1:1, and the modified diatomite is diatomite subjected to surface modification treatment by 3-aminopropyl triethoxysilane, and the specific surface area is more than or equal to 85m 2 /g.
4. The material for increasing the thermal insulation performance of the wooden door according to claim 1, wherein the preparation method of the modified glass fiber is as follows: Adding half deionized water into E-level long glass fiber, boiling, slightly boiling for 9-11min, filtering, drying, soaking in polyvinyl alcohol solution for 11-13h, drying, adding strong base, magnesium oxide and silane coupling agent, maintaining at 215-225 ℃ for 22-24min, and suction filtering and drying to constant weight.
5. A method for preparing a material for increasing the thermal insulation performance of a wooden door, which uses the material for increasing the thermal insulation performance of the wooden door according to any one of claims 1 to 4, and is characterized by comprising the following steps: Step one, drying and dewatering the inorganic heat-insulating filler, removing impurities to ensure the purity and dryness of the raw materials, and carrying out suction filtration and purification on the modified glass fiber to remove residual impurities and unreacted auxiliary agents on the surface; Step two, adding the pretreated inorganic heat-insulating filler and the organic bonding base material into a mixing roll, heating to 110-120 ℃ for plasticizing and mixing for 15-20 min, enabling the components to be mixed uniformly initially, then adding the composite cross-linking agent and the modifying auxiliary agent, continuously heating to 125-135 ℃ for continuous mixing for 20-25 min, promoting the full reaction and dispersion among the components, discharging the materials, Adding deionized water into the material in the step II at the adding rate of 5-8mL/min, stirring and dissolving in a water bath at 50-60 ℃, heating to 110-120 ℃ and keeping the temperature to a molten state, keeping the temperature for 10-15min, eliminating bubbles in the melt through stirring and vacuum treatment, ensuring the melt to be uniform and compact, and keeping the temperature for 10-15min; Step four, feeding the molten material into a screw extruder, extruding the molten material into a plate with the film thickness controlled to be 1.5-3.0mm through a die at 130-140 ℃; and fifthly, performing gradient cooling on the extruded plate, and cutting and blanking after cooling to obtain a thermal insulation material finished product suitable for wood door installation.
6. The method for preparing a material for increasing thermal insulation performance of wooden door according to claim 5, wherein the number of times of suction filtration of the modified glass fiber in the step one is not less than 5.
7. The method for preparing the material for increasing the thermal insulation performance of the wooden door, which is characterized in that the rotating speed of a rotor of the internal mixer in the second step is 40-60r/min, and the deep mixing and full plasticization of each component are realized by controlling the rotating speed of the rotor and the mixing temperature, so that the phenomenon of local agglomeration or uneven dispersion is avoided.
8. The method for preparing the material for increasing the thermal insulation performance of the wooden door, which is characterized in that the stirring process in the third step adopts high-speed stirring, the stirring speed is 80-100 r/min, the deionized water and the material are ensured to be fully fused, vacuum defoaming treatment is adopted in a molten state, and the defoaming time is 5-8 min.
9. The method for preparing the material for increasing the thermal insulation performance of the wooden door according to claim 5, wherein the screw speed of the screw extruder in the fourth step is 30-50r/min, the temperature of a machine head is 135-145 ℃, and the temperature of a charging barrel of the screw extruder is arranged in a segmented mode, wherein the temperature of the charging barrel is 125-130 ℃ in one region, the temperature of the charging barrel is 130-135 ℃ in two regions, and the temperature of the charging barrel is 135-140 ℃ in three regions.
10. The method for preparing the material for increasing the thermal insulation performance of the wooden door, which is disclosed in claim 5, is characterized in that the cooling in the fifth step adopts a gradient cooling mode, the cooling is firstly carried out for 10min at 60 ℃, then the cooling is carried out to room temperature at 25 ℃, and the total cooling time is less than or equal to 20h.

Description

Material for increasing thermal insulation performance of wooden door and preparation method thereof Technical Field The invention relates to the technical field of wooden door manufacturing, in particular to a material for increasing the thermal insulation performance of a wooden door and a preparation method thereof. Background The wooden door is used as a key component for building decoration and energy conservation, and the heat preservation performance of the wooden door directly influences the indoor thermal environment stability and the building energy consumption. With the popularization of green building concepts, the heat preservation and insulation requirements of consumers on wooden doors are continuously improved, and especially in cold areas and energy-saving buildings, heat preservation type wooden doors become core demand products. The heat preservation material is used as a core carrier of the heat preservation performance of the wooden door, and the performance quality of the heat preservation material directly determines the energy-saving effect and the use experience of the wooden door. The existing thermal insulation materials for wooden doors are mainly divided into two types, namely a traditional inorganic thermal insulation material such as common glass fiber, expanded perlite, aluminum silicate fiber and the like, a thermal insulation layer is formed by filling a wooden door interlayer, and an organic-inorganic composite thermal insulation material which is formed by mixing glass fiber with polymers such as polyethylene, polypropylene and the like. In the prior art, part of the proposal is to prepare the heat-insulating material by simply mixing inorganic fibers and polymers, or to adopt a single cross-linking agent to improve the formability of the material, and then to embed the heat-insulating material into the wooden door to realize the heat-insulating function. The existing wood door thermal insulation material has the problems that the thermal insulation performance and the light weight property are difficult to cooperate and give consideration to, the interface compatibility of the inorganic filler and the organic base material is poor, the layering and falling phenomenon is easy to occur, the mechanical strength and the durability are insufficient, the wood door thermal insulation material is easy to damage in the processing and using processes, meanwhile, part of the materials are poor in environmental protection, the preparation process is complex, the energy consumption is high, and the actual requirements of high-efficiency thermal insulation, safety and environmental protection and industrial production of the wood door are difficult to meet. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a material for increasing the thermal insulation performance of a wood door and a preparation method thereof, which solve the problems that the thermal insulation performance and the light weight characteristic of the existing wood door thermal insulation material are difficult to cooperate and compromise, the interface compatibility of an inorganic filler and an organic substrate is poor, the delamination and falling phenomenon are easy to occur, the mechanical strength and the durability are insufficient, the material is easy to damage in the processing and using processes, meanwhile, the environmental protection performance of part of the material is poor, the preparation process is complex, the energy consumption is high, and the actual requirements of high-efficiency thermal insulation, safety and environmental protection and industrial production of the wood door are difficult to meet. The invention is realized by the following technical scheme that the material for increasing the thermal insulation performance of the wooden door comprises the following components: The inorganic heat-insulating filler adopts a composite fiber-porous particle system, and a three-dimensional interweaved heat-insulating framework is formed by modified glass fibers, sepiolite fibers and expanded perlite, wherein the modified glass fibers are E-grade long glass fibers which are compositely modified by a strong base-silane coupling agent; an organic bonding base material which adopts an environment-friendly regenerated polymer and is used for wrapping inorganic heat-insulating filler; the compound cross-linking agent is formed by compounding di-tert-butyl peroxy isopropyl benzene and triallyl isocyanurate according to the mass ratio of 2:1 and is used for enhancing the cross-linking density of an organic phase; Modifying aids including polyvinyl alcohol, composite cellulose, modified diatomaceous earth and magnesium oxide; the composite material comprises the following raw materials in parts by weight: 25-35 parts of modified glass fiber, 18-25 parts of sepiolite fiber, 12-22 parts of expanded perlite, 8-12 parts of regenerated HDPE, 3-6 parts of composite cross-