Pink environment-friendly glass wool

Abstract

The present application relates to the technical field of environment-friendly glass wool, and proposes a pink environment-friendly glass wool, which comprises the following components in parts by weight: glass powder 50-60 parts, quartz sand 30-35 parts, dolomite 5-8 parts, borax 3-5 parts, soda ash 3-5 parts, nano-porous carbon 3-8 parts, silica aerogel powder 5-10 parts, formaldehyde-free adhesive 15-20 parts, and dyeing agent 0.02-0.05 parts. The above technical solution solves the problems of poor durability and environmental unfriendliness of the heat preservation and insulation performance of the glass wool product in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of environment-friendly glass wool, in particular to a pink environment-friendly glass wool. BACKGROUND

[0002] With the improvement of people's environmental awareness and the increasing requirement of society for energy saving and emission reduction, the application of green and environment-friendly building materials has become an important development trend of the building industry.

[0003] Thermal insulation materials are mainly used in the thermal insulation construction of building outer walls. According to the composition of thermal insulation materials, they can be divided into two types: organic thermal insulation materials and inorganic thermal insulation materials. Among them, the main representatives of organic thermal insulation materials are polystyrene insulation boards and polyurethane film plastic insulation boards, which have better thermal insulation performance than inorganic thermal insulation materials. Inorganic thermal insulation materials mainly refer to rock wool, glass wool and the like, which have higher durability than organic thermal insulation materials. Among them, glass wool is a kind of fibrous inorganic material widely used in building outer wall thermal insulation. It can be made into glass panels, glass wool and glass wool felt and other types of finished products through curing and cutting processes with the action of adhesives or additives, etc. It has the advantages of light weight and aging resistance. However, inorganic thermal insulation materials such as glass wool still have the problem of poor durability of thermal insulation performance, and glass wool felt often uses traditional thermosetting phenolic resin adhesives, which have safety problems of producing formaldehyde, acrylic acid and other harmful substances to human body and environment.

[0004] Therefore, the development of safe and environment-friendly glass wool materials with thermal insulation performance is conducive to widening the application of glass wool in the building industry and meeting the green development trend of the building industry. SUMMARY

[0005] The present application provides a pink environment-friendly glass wool, which solves the problems of poor durability of thermal insulation performance and environmental protection of glass wool products in the related art.

[0006] The technical scheme of the present application is as follows:

[0007] The present application provides a pink environment-friendly glass wool, which includes the following components by weight: glass powder 50-60 parts, quartz sand 30-35 parts, dolomite 5-8 parts, borax 3-5 parts, soda ash 3-5 parts, nano-porous carbon 3-8 parts, silica aerogel powder 5-10 parts, formaldehyde-free adhesive 15-20 parts, and dyeing agent 0.02-0.05 parts.

[0008] As a further technical scheme, the mass ratio of the nano-porous carbon and the silica aerogel powder is 1:2-3.

[0009] As a further technical solution, the formaldehyde-free adhesive is an epoxy resin adhesive; and the dyeing agent is cochineal.

[0010] As a further technical solution, the nanoporous carbon is grafted to the silica aerogel.

[0011] As a further technical solution, the grafting method comprises the following steps:

[0012] A1, ultrasonic mixing the silica aerogel powder and amino silane, drying to obtain pretreated silica aerogel powder;

[0013] A2, dispersing the nanoporous carbon in a stearic acid-containing ethanol solution, drying to obtain pretreated nanoporous carbon;

[0014] A3, mixing the pretreated silica aerogel powder and pretreated nanoporous carbon to obtain nanoporous carbon grafted silica aerogel powder.

[0015] As a further technical solution, in step A1, the mass ratio of the amino silane to the silica aerogel powder is 0.1-0.3:1, the mixing time is 30-60 min, and the amino silane is one of amino silane KH-553 and amino silane KH-A1171.

[0016] As a further technical solution, in step A2, the mass ratio of the stearic acid to the nanoporous carbon is 0.5-1:1.

[0017] As a further technical solution, in step A3, the mixing temperature is 80-90℃, and the mixing time is 1-2h.

[0018] The present application also proposes a preparation method of pink environment-friendly glass wool, comprising the following steps:

[0019] S1, melting and mixing the glass powder, quartz sand, dolomite, borax and soda ash to obtain a glass melt;

[0020] S2, mixing other components to obtain a mixture;

[0021] S3, centrifuging the glass melt to spin off glass fibers, and spraying the mixture on the glass fibers, and then solidifying and cooling to obtain pink environment-friendly glass wool.

[0022] As a further technical solution, in step S1, the melting temperature is 1200-1300℃; in step S2, the mixing time is 40-50 min; in step S3, the solidification temperature is 150-200℃, the solidification time is 15-20 min, and the average diameter of the glass fibers is 5.3μm.

[0023] The working principle and beneficial effects of the present application are as follows:

[0024] 1. In the present application, glass powder, quartz sand, dolomite, borax and soda ash are used as the framework material of glass wool, the formaldehyde-free adhesive and nano-porous carbon and silica aerogel powder are combined to wrap the glass wool framework, the porous channels of nano-porous carbon and silica aerogel powder are utilized to increase the heat propagation path, thereby significantly improving the thermal insulation performance and durability of the glass wool, and the prepared glass wool does not release harmful substances such as formaldehyde, and is more environmentally friendly and safe.

[0025] 2. In the present application, by adjusting the mass ratio of nano-porous carbon and silica aerogel powder, the durability of the thermal insulation performance of the glass wool is further improved.

[0026] 3. In the present application, the silica aerogel is pretreated with amino silane, and the nano-porous carbon is pretreated with stearic acid, the nano-porous carbon and silica aerogel are grafted together through chemical bonding of amino silane and stearic acid, which is not only beneficial to more uniform dispersion in the adhesive, but also has a more compact combination with the adhesive and is not easy to fall off, and at the same time, the porous units of the nano-porous carbon grafted silica aerogel are utilized to further improve the durability of the thermal insulation performance of the glass wool. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0028] In the following examples and comparative examples, the nano-porous carbon type is NCP-50, the pore size is 50 nm, and the average particle size is 10 μm; the silica aerogel powder has an average particle size of 50 μm; and the epoxy resin adhesive type is TDE-85.

[0029] Example 1

[0030] Pink environmentally friendly glass wool comprises the following components in parts by weight: glass powder 50 parts, quartz sand 30 parts, dolomite 5 parts, borax 3 parts, soda ash 3 parts, nano-porous carbon 3 parts, silica aerogel powder 5 parts, epoxy resin adhesive 15 parts, and cochineal red 0.02 parts.

[0031] The preparation method of pink environmentally friendly glass wool comprises the following steps:

[0032] S1. Melting and mixing glass powder, quartz sand, dolomite, borax and soda ash at 1250° C. to obtain a glass melt;

[0033] S2, mixing the nanoporous carbon, silica aerogel powder, epoxy resin binder, and cochineal carmine for 45 minutes to obtain a mixture;

[0034] S3. Centrifuge the glass melt to remove the glass fibers, spray the mixture on the glass fibers, solidify at 170° C. for 17 minutes, and cool to obtain pink environmentally friendly glass wool.

[0035] Example 2

[0036] Pink environmentally friendly glass wool, comprising the following components in parts by weight: 55 parts of glass powder, 32 parts of quartz sand, 6 parts of dolomite, 4 parts of borax, 4 parts of soda ash, 5 parts of nanoporous carbon, 7 parts of silica aerogel powder, 17 parts of epoxy resin binder, and 0.03 parts of cochineal red;

[0037] The preparation method of pink environmentally friendly glass wool comprises the following steps:

[0038] S1. Melting and mixing glass powder, quartz sand, dolomite, borax and soda ash at 1200° C. to obtain a glass melt;

[0039] S2, mixing the nanoporous carbon, silica aerogel powder, epoxy resin binder, and cochineal carmine for 50 minutes to obtain a mixture;

[0040] S3. Centrifuge the glass melt to remove the glass fibers, spray the mixture on the glass fibers, solidify at 150° C. for 20 minutes, and cool to obtain pink environmentally friendly glass wool.

[0041] Example 3

[0042] Pink environmentally friendly glass wool, comprising the following components in parts by weight: 60 parts of glass powder, 35 parts of quartz sand, 8 parts of dolomite, 5 parts of borax, 5 parts of soda ash, 8 parts of nanoporous carbon, 10 parts of silica aerogel powder, 20 parts of epoxy resin binder, and 0.05 parts of cochineal red;

[0043] The preparation method of pink environmentally friendly glass wool comprises the following steps:

[0044] S1. Melting and mixing glass powder, quartz sand, dolomite, borax and soda ash at 1300° C. to obtain a glass melt;

[0045] S2, mixing the nanoporous carbon, silica aerogel powder, epoxy resin binder, and cochineal carmine for 40 minutes to obtain a mixture;

[0046] S3. Centrifuge the glass melt to remove the glass fibers, spray the mixture on the glass fibers, solidify at 200° C. for 15 minutes, and cool to obtain pink environmentally friendly glass wool.

[0047] Example 4

[0048] The only difference between this embodiment and embodiment 3 is that 6 parts of nanoporous carbon and 12 parts of silica aerogel powder are added.

[0049] Example 5

[0050] The only difference between this embodiment and embodiment 3 is that 4.5 parts of nanoporous carbon and 13.5 parts of silica aerogel powder are added.

[0051] Example 6

[0052] The only difference between this embodiment and embodiment 5 is that nanoporous carbon is grafted onto silica aerogel powder, and in step S2, the nanoporous carbon grafted silica aerogel powder, epoxy resin binder, and cochineal red are mixed for 40 minutes to obtain a mixture;

[0053] Wherein, the grafting method comprises the following steps:

[0054] A1. Ultrasonic mixing of silica aerogel powder and aminosilane KH-A1171 for 30 min and drying to obtain pretreated silica aerogel powder; wherein the mass ratio of aminosilane KH-A1171 to silica aerogel powder is 0.1:1;

[0055] A2. Dispersing the nanoporous carbon in an ethanol solution containing stearic acid and drying to obtain pretreated nanoporous carbon; wherein the mass ratio of stearic acid to nanoporous carbon is 0.5:1;

[0056] A3. Mix the pretreated silica aerogel powder and the pretreated nanoporous carbon at 90° C. for 1 h to obtain nanoporous carbon grafted silica aerogel.

[0057] Example 7

[0058] The only difference between this embodiment and embodiment 6 is

[0059] The grafting method comprises the following steps:

[0060] A1. Ultrasonic mixing of silica aerogel powder and aminosilane KH-553 for 60 min and drying to obtain pretreated silica aerogel powder; wherein the mass ratio of aminosilane KH-553 to silica aerogel powder is 0.3:1;

[0061] A2, dispersing the nanoporous carbon in an ethanol solution containing stearic acid, drying to obtain pretreated nanoporous carbon; wherein the mass ratio of stearic acid to nanoporous carbon is 1:1;

[0062] A3, mixing the pretreated silica aerogel powder and the pretreated nanoporous carbon at 80℃ for 2h to obtain nanoporous carbon grafted silica aerogel.

[0063] Comparative Example 1

[0064] The difference between this comparative example and Example 3 is only that 3.6 parts of nanoporous carbon and 14.4 parts of silica aerogel powder are added.

[0065] Comparative Example 2

[0066] The difference between this example and Example 3 is only that 18 parts of nanoporous carbon are added without adding silica aerogel powder.

[0067] Comparative Example 3

[0068] The difference between this example and Example 3 is only that 18 parts of silica aerogel powder are added without adding nanoporous carbon.

[0069] Comparative Example 4

[0070] The difference between this example and Example 3 is only that no silica aerogel powder and nanoporous carbon are added.

[0071] According to the standard GB / T 10295-2008 "Determination of Steady-state Thermal Resistance and Related Properties of Thermal Insulation Materials-Heat Flow Meter Method", the thermal conductivity of the pink environment-friendly glass wool prepared in Examples 1-7 and Comparative Examples 1-4 is measured at an average temperature of 70℃, which is recorded as the initial thermal conductivity; then the pink environment-friendly glass wool prepared in Examples 1-7 and Comparative Examples 1-4 is placed in water at 100℃ for continuous boiling for 96h and then dried, and the thermal conductivity of the glass wool after boiling is tested according to the standard, which is recorded as the treated thermal conductivity; the thermal conductivity change rate is calculated, the thermal conductivity change rate = [(initial thermal conductivity-treated thermal conductivity) / initial thermal conductivity]x100%; wherein the thickness of the pink environment-friendly glass wool prepared in Examples 1-7 and Comparative Examples 1-4 is 55±2mm; the detection and calculation results are shown in the following table:

[0072]

[0073] It is found by comparing the data of examples 1-7 and comparative examples 1-4 with comparative examples 2-4 that the thermal conductivity and the thermal conductivity change rate of the pink environment-friendly glass wool prepared in examples 1-7 and comparative example 1 are lower, which indicates that the glass powder, quartz sand, dolomite, borax and soda ash are used as the skeleton material of the glass wool, and the non-formaldehyde binder and the nano-porous carbon and the silica aerogel powder are combined to wrap the glass wool skeleton, which can significantly improve the thermal insulation performance and the durability of the thermal insulation performance of the glass wool.

[0074] It is found by comparing the data of examples 3-5 and comparative example 1 that the pink environment-friendly glass wool prepared in examples 4-5 has lower thermal conductivity and thermal conductivity change rate compared with examples 3 and comparative example 1, which indicates that by adjusting the mass ratio of the nano-porous carbon and the silica aerogel powder, the durability of the thermal insulation performance of the glass wool can be further improved.

[0075] It is found by comparing the data of examples 5 and examples 6-7 that the pink environment-friendly glass wool prepared in examples 6-7 has lower thermal conductivity and thermal conductivity change rate compared with example 5, which indicates that by using the nano-porous carbon grafted silica aerogel, the durability of the thermal insulation performance of the glass wool can be further improved.

[0076] According to the standard GB / T 32379-2015 "Determination of formaldehyde emission of mineral wool and its products", the formaldehyde emission of the pink environment-friendly glass wool prepared in examples 1-7 and comparative examples 1-4 is detected, and the detection results are all not detected (detection limit 0.005mg / m 3 ).

[0077] The above is only the preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pink environmentally friendly glass wool, characterized in that: The invention comprises the following components in parts by weight: 50-60 parts of glass powder, 30-35 parts of quartz sand, 5-8 parts of dolomite, 3-5 parts of borax, 3-5 parts of soda ash, 3-8 parts of nanoporous carbon, 5-10 parts of silica aerogel powder, 15-20 parts of formaldehyde-free binder, and 0.02-0.05 parts of dye; The nanoporous carbon is grafted onto the silica aerogel powder; The grafting method comprises the following steps: A1, ultrasonically mixing the silica aerogel powder and aminosilane, and drying to obtain pretreated silica aerogel powder; A2, dispersing the nanoporous carbon in an ethanol solution containing stearic acid, and drying to obtain pretreated nanoporous carbon; A3. Mixing the pretreated silica aerogel powder and pretreated nanoporous carbon to obtain nanoporous carbon grafted silica aerogel.

2. The pink environmentally friendly glass wool according to claim 1, characterized in that: The mass ratio of the nanoporous carbon to the silica aerogel powder is 1:2-3.

3. The pink environmentally friendly glass wool according to claim 1, characterized in that: The formaldehyde-free adhesive is an epoxy resin adhesive; and the dye is cochineal red.

4. The pink environmentally friendly glass wool according to claim 1, characterized in that: In step A1, the mass ratio of the aminosilane to the silica aerogel powder is 0.1-0.3:1, the mixing time is 30-60 min, and the aminosilane is one of aminosilane KH-553 and aminosilane KH-A1171.

5. The pink environmentally friendly glass wool according to claim 1, characterized in that: In step A2, the mass ratio of stearic acid to nanoporous carbon is 0.5-1:

1.

6. The pink environmentally friendly glass wool according to claim 1, characterized in that: In step A3, the mixing temperature is 80-90° C. and the mixing time is 1-2 h.

7. The method for preparing pink environmentally friendly glass wool according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1, melting and mixing the glass powder, quartz sand, dolomite, borax and soda ash to obtain a glass melt; S2, mixing the other components to obtain a mixture; S3. Centrifuging the glass melt to remove glass fibers, spraying the mixture on the glass fibers, and solidifying and cooling to obtain pink environmentally friendly glass wool.

8. The method for preparing pink environmentally friendly glass wool according to claim 7, characterized in that: In step S1, the melting temperature is 1200-1300°C; in step S2, the mixing time is 40-50 minutes; in step S3, the curing temperature is 150-200°C, the curing time is 15-20 minutes, and the average diameter of the glass fiber is 5.3 μm.

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