An ultrahigh bio-based content uv putty, and a preparation method and application thereof

Abstract

The present application relates to the field of environment-friendly and sustainable development furniture paint technology, and specifically discloses a UV putty with super-high bio-based content, a preparation method and application thereof.The raw materials of the UV putty with super-high bio-based content include modified epoxy soybean oil acrylic resin, diethyl itaconate, acetylated starch, photoinitiator, wetting dispersant and fumed silica.The present application uses biological materials starch and UV bio-based resin monomers to be matched synergistically, so that the bio-based content of the prepared UV putty is greater than or equal to 87%, reaches 100% solid content, has no VOC emission and cannot cause environmental pollution.The prepared UV putty with super-high bio-based content is suitable for LED rapid curing and has low energy consumption.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of environmentally friendly and sustainable furniture paint technology, and particularly relates to a UV putty with super-high bio-based content and a preparation method and application thereof. BACKGROUND

[0002] Countries tend to reduce dependence on fossil raw materials. In the furniture field, the sustainable development strategy of IKEA enterprise clearly requires gradually eliminating fossil-based raw materials and turning to renewable and recycled materials.

[0003] Traditional solvent-based putty: volatile organic compound (VOC) content ≥ 300 g / L, high energy consumption for curing, 50°C baking for 30 min, and mostly dependent on fossil raw materials. Ordinary UV putty: bio-based content < 30%, such as EBECRYL860 resin system of Covestro, and needs mercury lamp curing.

[0004] In order to reduce volatile organic compound emissions, reduce dependence on petroleum-based raw materials and sustainable development, it is necessary to provide a UV putty with super-high bio-based content and a preparation method and application thereof. The putty not only has high bio-based content and excellent filling property, but also is suitable for LED rapid curing and low energy consumption. SUMMARY

[0005] The present application aims to at least solve one of the technical problems existing in the prior art, and therefore proposes a UV putty with super-high bio-based content and a preparation method and application thereof. The putty not only has high bio-based content and excellent filling property, but also is suitable for LED rapid curing and low energy consumption.

[0006] The first aspect of the present application provides a UV putty with super-high bio-based content.

[0007] Specifically, the raw materials of the UV putty include modified epoxy soybean oil acrylic resin, diethyl itaconate, acetylated starch, photoinitiator, wetting dispersant and fumed silica.

[0008] Preferably, the raw materials of the UV putty include, by weight fraction, 30-35 parts of modified epoxy soybean oil acrylic resin, 20-30 parts of diethyl itaconate, 35-45 parts of acetylated starch, 1-5 parts of photoinitiator, 0.1-1 part of wetting dispersant and 0.1-1 part of fumed silica.

[0009] Further preferably, the raw materials of the UV putty include, by weight fraction, 32-33 parts of modified epoxy soybean oil acrylic resin, 24-26 parts of diethyl itaconate, 38-42 parts of acetylated starch, 1-3 parts of photoinitiator, 0.1-0.2 part of wetting dispersant and 0.4-0.6 part of fumed silica.

[0010] Further preferably, the raw materials of the UV putty comprise, by weight fraction, 32.4 parts of modified epoxy soybean oil acrylic resin, 25 parts of diethyl itaconate, 40 parts of acetylated starch, 2 parts of photoinitiator, 0.1 part of wet dispersant, and 0.5 part of fumed silica.

[0011] Preferably, the preparation method of the modified epoxy soybean oil acrylic resin comprises grafting maleic anhydride onto epoxy soybean oil acrylic resin.

[0012] Preferably, the grafting rate of the modified epoxy soybean oil acrylic resin is ≥90%.

[0013] Preferably, the double bond density of the modified epoxy soybean oil acrylic resin is 2.5-3.0 mol / g.

[0014] Further preferably, the double bond density of the modified epoxy soybean oil acrylic resin is 2.6-2.9 mol / g.

[0015] Further preferably, the double bond density of the modified epoxy soybean oil acrylic resin is 2.8 mol / g.

[0016] Preferably, the degree of substitution of the acetylated starch is 0.35-0.45.

[0017] Further preferably, the degree of substitution of the acetylated starch is 0.38-0.42.

[0018] Further preferably, the degree of substitution of the acetylated starch is 0.4.

[0019] Preferably, the photoinitiator comprises 2,4,6-trimethyl acyl-diphenyl phosphine oxide. The photoinitiator cooperates with the resin and diethyl itaconate to achieve LED light source curing.

[0020] Preferably, the bio-based content of the modified epoxy soybean oil acrylic resin is ≥65%, and the modified epoxy soybean oil acrylic resin is the main body resin as the film-forming material.

[0021] Preferably, the bio-based content of the diethyl itaconate is 100%.

[0022] Preferably, the bio-based content of the acetylated starch is 100%, and the acetylated starch forms a hydrogen bond network with the resin to solve the compatibility problem of starch-resin, thereby not only increasing the bio-based content but also having good filling property.

[0023] Preferably, the wet dispersant can increase the wettability of pigments.

[0024] Preferably, the fumed silica can increase the anti-settling property of the UV putty.

[0025] The second aspect of the present application provides a preparation method of a UV putty with super-high bio-based content.

[0026] Specifically, the preparation method of the UV putty with super-high bio-based content comprises the following steps:

[0027] (1) First, mix the modified epoxy soybean oil acrylic resin, diethyl itaconate, a photoinitiator, and a wetting dispersant, and perform first stirring to obtain slurry A;

[0028] (2) Then, add acetylated starch and fumed silica to the slurry A obtained in step (1), mix, and perform second stirring to obtain the UV putty with super-high bio-based content.

[0029] Preferably, in step (1), the first stirring is performed at a speed of 500-800 rpm for 15-25 min.

[0030] Further preferably, in step (1), the first stirring is performed at a speed of 550-650 rpm for 18-22 min.

[0031] Still further preferably, in step (1), the first stirring is performed at a speed of 600 rpm for 20 min.

[0032] Preferably, in step (2), the second stirring is performed at a speed of 1100-1300 rpm for 30-50 min.

[0033] Further preferably, in step (2), the second stirring is performed at a speed of 1150-1250 rpm for 35-45 min.

[0034] Still further preferably, in step (2), the second stirring is performed at a speed of 1200 rpm for 40 min.

[0035] The third aspect of the present application provides an application of the UV putty with super-high bio-based content in wood filling coating.

[0036] Specifically, the UV putty with super-high bio-based content is used as a filling putty in wood filling coating.

[0037] Compared with the prior art, the present application has the following beneficial effects:

[0038] The present application uses biological material starch and UV bio-based resin monomer to cooperate, so that the bio-based content of the prepared UV putty is ≥ 87%, reaching 100% solid content, without VOC emission, and without causing environmental pollution.

[0039] The prepared UV putty with super-high bio-based content is suitable for LED rapid curing and has low energy consumption. DETAILED DESCRIPTION

[0040] In order to make the skilled in the art more clearly understand the technical solutions described in the present application, the following examples are listed for illustration. It should be pointed out that the following examples do not constitute a limitation on the scope of protection required by the present application.

[0041] The raw materials, reagents or devices used in the following examples, unless otherwise specified, can be obtained from conventional commercial channels or can be obtained by existing known methods.

[0042] Example 1

[0043] A UV putty with super-high bio-based content and a preparation method thereof.

[0044] The UV putty with super-high bio-based content comprises, by weight fraction, modified epoxy soybean oil acrylic resin 32.4 parts, itaconic acid diethyl ester 25 parts (Zhejiang Guaguang GG-DI-99), acetylated starch 40 parts (Guomin starch), 2,4,6-trimethyl acyl-diphenyl phosphine oxide (Jiurui Chemical) 2 parts, BYK103 wetting dispersant 0.1 part, and fumed silica 0.5 part.

[0045] The preparation method of the UV putty comprises the following steps:

[0046] (1) First, mix the modified epoxy soybean oil acrylic resin, itaconic acid diethyl ester, 2,4,6-trimethyl acyl-diphenyl phosphine oxide, and wetting dispersant, and perform first stirring at a speed of 600 rpm for 20 min to obtain slurry A;

[0047] (2) Then, add the acetylated starch and fumed silica to the slurry A, mix, and perform second stirring at a speed of 1200 rpm for 40 min to obtain the UV putty with super-high bio-based content.

[0048] Comparative Example 1

[0049] A commercial UV putty.

[0050] The commercial UV putty is Huirui Chemical: UFR1105-01B.

[0051] Comparative Example 2

[0052] A UV putty and a preparation method thereof.

[0053] The UV putty is prepared from the following raw materials by weight: modified epoxy soybean oil acrylic resin 57.4 parts, common starch 40 parts (Guomin starch), 2,4,6-trimethyl acyl-diphenyl phosphine oxide (Jiuri Chemical) 2 parts, BYK103 wetting dispersant 0.1 part, and fumed silica 0.5 part.

[0054] The preparation method of the UV putty comprises the following steps:

[0055] (1) First, mix the modified epoxy soybean oil acrylic resin, 2,4,6-trimethyl acyl-diphenyl phosphine oxide, and wetting dispersant, and perform first stirring at a speed of 600 rpm for 20 min to obtain slurry A;

[0056] (2) Then, add common starch and fumed silica to the slurry A, mix, and perform second stirring at a speed of 1200 rpm for 40 min to obtain the UV putty.

[0057] Comparative Example 2

[0058] A UV putty and a preparation method thereof.

[0059] The UV putty is prepared from the following raw materials by weight: modified epoxy soybean oil acrylic resin 57.4 parts, common starch 40 parts (Guomin starch), 2,4,6-trimethyl acyl-diphenyl phosphine oxide (Jiuri Chemical) 2 parts, BYK103 wetting dispersant 0.1 part, and fumed silica 0.5 part.

[0060] The preparation method of the UV putty comprises the following steps:

[0061] (1) First, mix the modified epoxy soybean oil acrylic resin, 2,4,6-trimethyl acyl-diphenyl phosphine oxide, and wetting dispersant, and perform first stirring at a speed of 600 rpm for 20 min to obtain slurry A;

[0062] (2) Then, add common starch and fumed silica to the slurry A, mix, and perform second stirring at a speed of 1200 rpm for 40 min to obtain the UV putty.

[0063] Performance detection:

[0064] Table 1 Effect detection results of Example 1 and Comparative Example 1

[0065] Indicators Example 1 Comparative Example 1 Bio-based content 87％ ≤30％ VOC emissions 0 g / L 120 g / L Curing energy consumption 0.3 KW / M 2 ]] 5 KW / M 2 ]]

[0066] Table 2 Basic property detection results of Example 1 and Comparative Examples 2-3

[0067]

[0068] The preferred embodiments of the present application have been described above in detail. It should be understood that modifications and variations to the concepts herein disclosed can be resorted to by those skilled in the art, falling within the scope of the application, without departing from the scope of the application. Accordingly, such modifications and variations are intended to fall within the scope of the application as defined by the appended claims.

Claims

1. A UV putty with ultra-high bio-based content, characterized in that, The raw materials of the UV putty, by weight, include 30-35 parts of modified epoxy soybean oil acrylic resin, 20-30 parts of diethyl itaconic acid, 35-45 parts of acetylated starch, 1-5 parts of photoinitiator, 0.1-1 parts of wetting and dispersing agent, and 0.1-1 parts of fumed silica.

2. The UV putty according to claim 1, characterized in that, The preparation method of the modified epoxy soybean oil acrylate resin includes: grafting epoxy soybean oil acrylate resin with maleic anhydride.

3. The UV putty according to claim 2, characterized in that, The grafting rate of the modified epoxy soybean oil acrylic resin is ≥90%.

4. The UV putty according to claim 2, characterized in that, The modified epoxy soybean oil acrylic resin has a double bond density of 2.5~3.0 mol / g.

5. The UV putty according to claim 2, characterized in that, The degree of substitution of the acetylated starch is 0.35 to 0.

45.

6. The method for preparing UV putty with ultra-high bio-based content according to any one of claims 1 to 5, characterized in that, Includes the following steps: (1) First, mix the modified epoxy soybean oil acrylate resin, diethyl itaconic acid, photoinitiator, and wetting and dispersing agent, and stir for the first time to obtain slurry A; (2) Add acetylated starch and fumed silica to the slurry A in step (1), mix, and stir for a second time to obtain UV putty with ultra-high bio-based content.

7. The preparation method according to claim 6, characterized in that, In step (1), the first stirring speed is 500~800 rpm and the time is 15~25 min.

8. The preparation method according to claim 6, characterized in that, In step (2), the second stirring speed is 1100~1300 rpm and the time is 30~50 min.

9. The application of the ultra-high bio-based UV putty according to any one of claims 1 to 5 in wood filling and coating.

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