Preparation method of portable single-component polyurethane spraying thermal insulation material

Abstract

The invention discloses a preparation method of a portable single-component polyurethane spraying thermal insulation material, relates to the technical field of thermal insulation materials, and aims to solve the technical problems that a current polyurethane spraying thermal insulation material has strong pungent smell and affects surrounding personnel when being carried, and the preparation method comprises the following preparation steps: adding a pigment into a stirring container; the activated carbon adsorbent is arranged to adsorb peculiar smell and harmful substances in the coating, so that the smell and environmental protection performance of the coating are improved; the oxidation deodorant removes peculiar smell molecules in the coating through an oxidation reaction, so that the purpose of deodorization is achieved; the plant essential oil odor covering agent covers peculiar smell in the coating by emitting fresh fragrance, so that the use experience of the coating is improved; meanwhile, the polyether polyol taking cane sugar as an initiator, the polyether polyol taking polyether amine as an initiator and the polyether polyol taking vegetable oil polyol as an initiator are arranged, so that VOC (Volatile Organic Compounds) in the polyurethane can be reduced, the peculiar smell of the polyurethane can be thoroughly removed, and the carrying is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of thermal insulation materials, and more specifically to a method for preparing a portable single-component polyurethane spray thermal insulation material. Background Art

[0002] Polyurethane is a closed-cell polymer material with an extremely low thermal conductivity coefficient, generally between 0.022-0.028W / (m·K), which is much lower than traditional insulation materials such as polystyrene and rock wool. This means that the polyurethane spray insulation layer can effectively prevent the transfer of heat and greatly reduce the energy consumption of buildings. Therefore, it is widely used in the field of building insulation. During construction, workers need to carry polyurethane insulation materials to various locations for construction.

[0003] However, the current polyurethane spray insulation material has a strong pungent smell, which will affect the staff and the surrounding people when carrying it. In view of this, we propose a preparation method of a portable single-component polyurethane spray insulation material. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art, meet the actual needs, and provide a method for preparing a portable single-component polyurethane spray insulation material to solve the technical problem that the current polyurethane spray insulation material has a strong pungent smell and affects the surrounding people when carried.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a method for preparing a portable one-component polyurethane spray insulation material, comprising the following preparation steps:

[0006] S1: Add the pigment into a stirring container, slowly add the foaming agent, use a high-speed disperser to disperse for 30 minutes to 1 hour, add the filler to the dispersed pigment solution, continue to stir and disperse evenly, and prepare component A;

[0007] S2: Add the polyether polyol into the reaction kettle, turn on the stirring device, slowly add the modified isocyanate under stirring, stir evenly and fully to react for 1-2 hours to prepare component B;

[0008] S3: Add the activated carbon adsorbent, the oxidative deodorant and the plant essential oil odor masking agent into the stirring container in sequence, and stir evenly for 20-30 minutes to ensure that the components are fully mixed to prepare component C;

[0009] S4: Mix components A, B and C, and use a stirring device to fully stir the mixed paint for 30 minutes to 1 hour to ensure that the components are fully mixed to form foam.

[0010] Preferably,

[0011] The A component includes the following raw materials in weight percentage: 5%-15% pigment, 5%-15% filler, and 15%-40% foaming agent;

[0012] The B component includes the following raw materials in weight percentage: 20%-40% polyether polyol and 10%-30% modified isocyanate;

[0013] The C component comprises the following raw materials in percentage by weight: 1%-5% of activated carbon adsorbent, 0.5%-2% of oxidative deodorant, and 0.1%-1% of plant essential oil odor masking agent.

[0014] Preferably, the pigment comprises the following raw materials in weight percentage: 90%-99% phthalocyanine blue powder, 0.5%-2% dispersant, 0.1%-1% wetting agent, and 0.1%-1% thickener.

[0015] Preferably, the filler is a precipitated barium sulfate filler; the density of the precipitated barium sulfate filler is 4.25-4.5 g / cm 3 The particle size of the precipitated barium sulfate filler is 0.5-1.0 um.

[0016] Preferably, the foaming agent comprises the following raw materials in weight percentage: 80%-95% carbon dioxide foaming agent, 5%-15% flame retardant, and 1%-2% defoaming agent.

[0017] Preferably, the polyether polyol comprises the following parts in weight percentage: 40%-60% of polyether polyol with sucrose as initiator, 30%-50% of polyether polyol with polyether amine as initiator, and 10%-20% of polyether polyol with vegetable oil polyol as initiator.

[0018] Preferably, the polyether polyol comprises the following parts in weight percentage: 30%-50% of polyether polyol with sucrose as initiator, 40%-60% of polyether polyol with polyether amine as initiator, and 20%-30% of polyether polyol with vegetable oil polyol as initiator.

[0019] Preferably, the modified isocyanate is 1,6-hexamethylene diisocyanate.

[0020] Preferably, the polyether polyol in the B component is mixed with the modified isocyanate to form a combined polyether polyol.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention improves the odor and environmental performance of the paint by arranging an activated carbon adsorbent to absorb odor and harmful substances in the paint; the oxidative deodorant removes odor molecules in the paint through an oxidation reaction to achieve the purpose of deodorization; the plant essential oil masking agent masks the odor in the paint by emitting a fresh fragrance to improve the use experience of the paint; at the same time, polyether polyols with sucrose as the initiator, polyether polyols with polyether amine as the initiator, and polyether polyols with vegetable oil polyols as the initiator are arranged to reduce VOC in polyurethane, thereby completely removing the odor of polyurethane and facilitating carrying.

[0023] 2. The present invention adopts sucrose as the main initiator, replaces the traditional petroleum-based polyols with vegetable oil polyols, and at the same time increases the environmental friendliness of the polyurethane spray insulation material by setting a pollution-free activated carbon adsorbent, an oxidizing deodorant extracted from natural plants, and a plant essential oil masking agent.

[0024] 3. The present invention sets 1,6-hexamethylene diisocyanate, which can improve the yellowing resistance and aging resistance of the material, and cooperates with precipitated barium sulfate to increase the hardness, wear resistance and corrosion resistance of the thermal insulation material, thereby ensuring the adhesion during spraying and the strength after spraying. DETAILED DESCRIPTION

[0025] Example 1

[0026] The present invention relates to a method for preparing a portable one-component polyurethane spray insulation material, comprising the following preparation steps:

[0027] S1: Add 15% of pigment into a stirring container, slowly add 31% of foaming agent, use a high-speed disperser to disperse for 1 hour, add 15% of filler to the dispersed pigment solution, continue to stir and disperse evenly, and prepare component A;

[0028] S2: Add 20% of polyether polyol into the reactor, turn on the stirring device, slowly add 11% of modified isocyanate under stirring, stir evenly and fully to react for 1 hour to prepare component B;

[0029] S3: 5% of activated carbon adsorbent, 2% of oxidative deodorant and 1% of plant essential oil odor masking agent are added into a stirring container in sequence, and stirred evenly for 30 minutes to ensure that the components are fully mixed to prepare component C;

[0030] S4: Mix components A, B, and C, and use a stirring device to fully stir the mixed paint for 1 hour to ensure that the components are fully mixed to form foam.

[0031] Example 2

[0032] The present invention relates to a method for preparing a portable one-component polyurethane spray insulation material, comprising the following preparation steps:

[0033] S1: Add 5% of pigment into a stirring container, slowly add 15% of foaming agent, use a high-speed disperser to disperse for 30 minutes, add 5% of filler to the dispersed pigment solution, continue to stir and disperse evenly, and prepare component A;

[0034] S2: Add 35% of polyether polyol into the reactor, turn on the stirring device, slowly add 32% of modified isocyanate under stirring, stir evenly and fully to react for 2 hours to prepare component B;

[0035] S3: 5% of activated carbon adsorbent, 2% of oxidative deodorant and 1% of plant essential oil odor masking agent are added into a stirring container in sequence, and stirred evenly for 30 minutes to ensure that the components are fully mixed to prepare component C;

[0036] S4: Mix components A, B and C, and use a stirring device to fully stir the mixed paint for 30 minutes to 1 hour to ensure that the components are fully mixed to form foam.

[0037] Example 3

[0038] The present invention relates to a method for preparing a portable one-component polyurethane spray insulation material, comprising the following preparation steps:

[0039] S1: Add 10% of pigment into a stirring container, slowly add 25% of foaming agent, use a high-speed disperser to disperse for 45 minutes, add 10% of filler to the dispersed pigment solution, continue to stir and disperse evenly, and prepare component A;

[0040] S2: Add 30% of polyether polyol into the reactor, turn on the stirring device, slowly add 21.5% of modified isocyanate under stirring, stir evenly and fully to react for 1.5 hours to prepare component B;

[0041] S3: 2% of activated carbon adsorbent, 1% of oxidative deodorant and 0.5% of plant essential oil odor masking agent are added to a stirring container in sequence, and stirred evenly for 25 minutes to ensure that the components are fully mixed to prepare component C;

[0042] S4: Mix components A, B and C, and use a stirring device to fully stir the mixed paint for 30 minutes to 1 hour to ensure that the components are fully mixed to form foam.

[0043] Example 4

[0044] In the embodiment of the present invention, based on the embodiment 1, the pigment comprises the following raw materials in weight percentage: 96% of phthalocyanine blue powder, 2% of dispersant, 1% of wetting agent, and 1% of thickener.

[0045] Example 5

[0046] In the embodiment of the present invention, based on the embodiment 1, the filler is a precipitated barium sulfate filler; the density of the precipitated barium sulfate filler is 4.25-4.5 g / cm 3 The particle size of the precipitated barium sulfate filler is 0.5-1.0 um.

[0047] Example 6

[0048] In an embodiment of the present invention, based on Embodiment 1, the foaming agent comprises the following raw materials in weight percentage: 90% carbon dioxide foaming agent, 9% flame retardant, and 1% defoaming agent.

[0049] Example 7

[0050] In an embodiment of the present invention, based on embodiment 1, the polyether polyol includes the following parts in weight percentage: 60% polyether polyol with sucrose as initiator, 30% polyether polyol with polyether amine as initiator, and 10% polyether polyol with vegetable oil polyol as initiator.

[0051] Example 8

[0052] In an embodiment of the present invention, based on embodiment 1, the polyether polyol includes the following parts in weight percentage: 40% polyether polyol with sucrose as initiator, 35% polyether polyol with polyether amine as initiator, and 25% polyether polyol with vegetable oil polyol as initiator.

[0053] Table 1 shows the weight percentage of each component in Examples 1, 2, and 3.

[0054]

[0055] Table 2 shows the weight percentages of the components in Examples 7 and 8;

[0056]

[0057] Comparative Example

[0058] The formula in Example 1 is used, except that the polyether polyol using formaldehyde as a starting material is used instead of the polyether polyol using polyetheramine as a starting material, and the polyether polyol using traditional petroleum-based polyol as a starting material is used instead of the polyether polyol using vegetable oil polyol as a starting material. In the comparative example, the volatility of the polyether polyol after the replacement is higher and the irritating odor is stronger.

[0059] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A method for preparing a portable one-component polyurethane spray insulation material, comprising the following preparation steps: S1: Add the pigment into a stirring container, slowly add the foaming agent, use a high-speed disperser to disperse for 30 minutes to 1 hour, add the filler to the dispersed pigment solution, continue to stir and disperse evenly, and prepare component A; S2: Add the polyether polyol into the reaction kettle, turn on the stirring device, slowly add the modified isocyanate under stirring, stir evenly and fully to react for 1-2 hours to prepare component B; S3: Add the activated carbon adsorbent, the oxidative deodorant and the plant essential oil odor masking agent into the stirring container in sequence, and stir evenly for 20-30 minutes to ensure that the components are fully mixed to prepare component C; S4: Mix components A, B and C, and use a stirring device to fully stir the mixed paint for 30 minutes to 1 hour to ensure that the components are fully mixed to form foam.

2. The method for preparing a portable one-component polyurethane spray insulation material according to claim 1, characterized in that: The A component includes the following raw materials in weight percentage: 5%-15% pigment, 5%-15% filler, and 15%-40% foaming agent; The B component includes the following raw materials in weight percentage: 20%-40% polyether polyol and 10%-30% modified isocyanate; The C component comprises the following raw materials in percentage by weight: 1%-5% of activated carbon adsorbent, 0.5%-2% of oxidative deodorant, and 0.1%-1% of plant essential oil odor masking agent.

3. The method for preparing a portable one-component polyurethane spray insulation material according to claim 2, characterized in that: The pigment comprises the following raw materials in percentage by weight: 90%-99% of phthalocyanine blue powder, 0.5%-2% of a dispersant, 0.1%-1% of a wetting agent, and 0.1%-1% of a thickener.

4. The method for preparing a portable one-component polyurethane spray insulation material according to claim 2, characterized in that: The filler is a precipitated barium sulfate filler; the density of the precipitated barium sulfate filler is 4.25-4.5 g / cm 3 The particle size of the precipitated barium sulfate filler is 0.5-1.0 um.

5. The method for preparing a portable one-component polyurethane spray insulation material according to claim 2, characterized in that: The foaming agent comprises the following raw materials in weight percentage: 80%-95% of carbon dioxide foaming agent, 5%-15% of flame retardant, and 1%-2% of defoaming agent.

6. The method for preparing a portable one-component polyurethane spray insulation material according to claim 2, characterized in that: The polyether polyol comprises the following parts in weight percentage: 40%-60% of polyether polyol using sucrose as initiator, 30%-50% of polyether polyol using polyether amine as initiator, and 10%-20% of polyether polyol using vegetable oil polyol as initiator.

7. The method for preparing a portable one-component polyurethane spray insulation material according to claim 2, characterized in that: The polyether polyol comprises the following parts in weight percentage: 30%-50% of polyether polyol using sucrose as initiator, 40%-60% of polyether polyol using polyether amine as initiator, and 20%-30% of polyether polyol using vegetable oil polyol as initiator.

8. The method for preparing a portable one-component polyurethane spray insulation material according to claim 2, characterized in that: The modified isocyanate is 1,6-hexamethylene diisocyanate.

9. The method for preparing a portable one-component polyurethane spray insulation material according to claim 2, characterized in that: The polyether polyol in the B component is mixed with the modified isocyanate to form a combined polyether polyol.

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