A bio-based dust suppressant useful for road stabilization
By preparing a bio-based dust suppressant, which has good inhibitory properties, the problems of preparing bio-based inhibitors in the prior art are solved, as well as the problems of preparing simple curing agents and preparing simple inhibitors.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- JIANGSU AKST NEW MATERIALS CO LTD
- Filing Date
- 2024-12-27
- Publication Date
- 2026-06-30
AI Technical Summary
Existing dust suppressants have limited performance, are complex to prepare, and are costly. Furthermore, they cannot effectively reinforce roads during heavy rain, making them unsuitable for use and affecting the normal use of roads.
A bio-based dust suppressant prepared using xylose mother liquor, and further prepared by adding suitable crosslinking agents and other additives, exhibits good dust suppression efficiency, compressive strength, and water resistance. It can be used as a soil stabilizer and is a simple stabilizer to prepare.
It achieves efficient dust suppression and road reinforcement, reduces costs, is easy to operate and prepare, and facilitates the inhibitory effect on roads.
Smart Images
Figure CN122302824A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of road dust suppression technology, and specifically to a bio-based dust suppressant that can be used for road reinforcement. Background Technology
[0002] Dust pollution has become one of the world's major environmental hazards, significantly impacting human health, production safety, and the environment. Therefore, controlling and reducing dust dispersion is of great importance.
[0003] Currently, commonly used dust suppression methods include covering, water spraying, and dust suppressants. However, neither covering nor water spraying is effective in solving the problem. Covering reduces operational efficiency, is difficult to recover, and is costly; water spraying produces little dust and has a short effective suppression time, less than half an hour in the high temperatures of summer, resulting in a serious waste of water resources. Compared to other methods, dust suppressants are characterized by low cost, practicality, long-lasting effectiveness, and significant dust removal effect. Since their inception, they have been widely adopted by countries around the world and are considered the most effective method for solving dust pollution.
[0004] With the development of chemical dust suppressants, problems such as low dust suppression efficiency and serious pollution have emerged. Therefore, researchers have begun to develop environmentally friendly dust suppressants with the goals of being green, biodegradable, low-cost, and highly efficient. Natural materials such as polysaccharides, proteins, and microorganisms have shown potential as dust suppressant components. For example, CN110437802A discloses a novel environmentally friendly and biodegradable algal bio-dust suppressant, comprising the following components (by mass percentage): polyvinyl alcohol: 3-6%, thickener: 1-5%, crosslinking agent: 3-5%, surfactant: 1-3.6%, metal oxide: 6-8%, algae: 3.1-5.7%, natural latex: 1-2.4%, organic polyol: 25-45%, water, and the balance. The dust suppressant prepared by this invention is non-toxic, harmless, and environmentally friendly; however, it involves the complex preparation of multiple chemical raw materials, and some raw materials are expensive, resulting in a relatively high cost. CN109021925A discloses a method for preparing an environmentally friendly dust suppressant. Using seaweed polysaccharide as a raw material, polyacrylamide polymers as a backbone material, polyvalent ethanol as a hygroscopic material, and sodium dodecylbenzenesulfonate as a surfactant, the method involves mixing and stirring to obtain the environmentally friendly dust suppressant. The dust suppressant prepared by this invention is environmentally friendly, low-cost, and has high dust suppression efficiency. However, these dust suppressants only have dust suppression functions and lack road reinforcement functions. When heavy rain occurs, the muddy roads treated with these dust suppressants are usually very muddy and difficult to pass, which can seriously affect the normal use of roads. Therefore, developing a dust suppressant that can be used for road reinforcement while also possessing the advantages of high dust suppression efficiency, environmental friendliness, simple preparation, and low cost has significant practical application value.
[0005] Xylose mother liquor is the waste sugar solution remaining after the chemical production of xylose, or the waste mother liquor from other processes. To turn this waste into a valuable resource, xylose mother liquor is now widely used as a substitute for chemical raw materials in the food, pharmaceutical, and cosmetic industries. Currently, some research focuses on the utilization value of the various monosaccharides in xylose mother liquor, aiming to synthesize a novel moisturizer for cosmetics. However, no one has yet utilized xylose mother liquor in the field of dust suppressants. Xylose mother liquor has a certain viscosity, therefore it can be used as a binder-like component in dust suppressants, effectively binding dust particles. Summary of the Invention
[0006] Technical issues:
[0007] Addressing the issues of limited performance, complex preparation, and high cost of existing dust suppressants, the main technical solution of this invention is to use xylose mother liquor, a byproduct of biomass raw material production (e.g., xylose preparation process), as the main raw material. By adding suitable crosslinking agents and other additives, an environmentally friendly bio-based dust suppressant is prepared. The bio-based dust suppressant provided by this invention not only has good dust suppression efficiency but also good compressive strength and water resistance, making it suitable for road reinforcement. Using the byproduct xylose mother liquor to replace chemical raw materials is not only environmentally friendly but also saves resources and reduces costs.
[0008] Technical solution:
[0009] The first aspect of the present invention provides a bio-based dust suppressant that can be used for road reinforcement, which, based on 100% solid content, contains the following components in the following weight ratio: 100 parts xylose mother liquor and 3-50 parts polyamine crosslinking agent.
[0010] Preferably, the bio-based dust suppressant contains the following components in the indicated weight ratios: 100 parts xylose mother liquor and 5-30 parts polyamine crosslinking agent.
[0011] More preferably, the bio-based dust suppressant contains the following components in the indicated weight ratios: 100 parts xylose mother liquor and 5-25 parts polyamine crosslinking agent.
[0012] In some embodiments, the xylose mother liquor contains 20% to 70% by weight of solids, with the remainder being water.
[0013] Preferably, the xylose mother liquor contains 40% to 70% solids by mass, with the remainder being water.
[0014] More preferably, the xylose mother liquor contains 50% to 70% solids by mass, with the remainder being water.
[0015] In some embodiments, the solids in the xylose mother liquor contain reducing sugars at a mass percentage of ≥50%.
[0016] Preferably, the solids in the xylose mother liquor contain reducing sugars with a mass percentage of ≥60%.
[0017] In some embodiments, the reducing sugar is mainly composed of xylose, arabinose, glucose and galactose.
[0018] Preferably, the reducing sugar is mainly composed of D-xylose, L-arabinose, D-glucose, and D-galactose.
[0019] In some embodiments, the solid contains ≥20% xylose by mass.
[0020] Preferably, the xylose content in the solid is ≥40% by mass.
[0021] In some embodiments, the polyamine crosslinking agent is selected from primary diamine or polyamine.
[0022] Preferably, the primary diamine is selected from one or more of lysine, ethylenediamine, 1,6-hexanediamine, diaminodiphenylmethane, xylenediamine, JEFFAMINE@D-230, JEFFAMINE@D-400, JEFFAMINE@D-2000, or JEFFAMINE@EDR-148; the secondary primary diamine is selected from one or more of diethylenetriamine, triethylenetetramine, tetraethylenepentamine, or JEFFAMINE@403.
[0023] More preferably, the primary diamine is one or more of JEFFAMINE@D-230 or JEFFAMINE@D-400; the secondary diamine is selected from one or more of JEFFAMINE@403, tetraethylenepentamine or lysine.
[0024] Based on a 100% solids content, in some embodiments, the recommended addition amount of the bio-based dust suppressant of the present invention is 1-20% of the soil, preferably 2-15%, and more preferably 5-12%. If the addition amount is too small, it will not significantly contribute to the compressive strength performance of the soil; if the addition amount is too large, it may lead to excessively high raw material costs, which is not economically worthwhile.
[0025] In some embodiments, the dust suppressant has a dust suppression efficiency of ≥82% under PM2.5 conditions; and a dust suppression efficiency of ≥81% under PM10.0 conditions.
[0026] A second aspect of the present invention provides the use of any of the above-mentioned bio-based dust suppressants for road reinforcement as soil stabilizers.
[0027] In some embodiments, the dust suppressant has a non-marking compressive strength greater than or equal to 1.2 MPa.
[0028] Technical effects:
[0029] 1. The dust suppressant prepared by this invention uses a large amount of xylose mother liquor, a byproduct of the sugar industry. This product is a raw material obtained from renewable resources and is a renewable low-carbon product.
[0030] 2. The dust suppressant prepared by this invention not only has dust suppression function, but also has good compressive strength and water resistance. It can also be used as a soil stabilizer. Applying the dust suppressant of this invention to roads can produce a road surface system with good comprehensive performance. 3. The dust suppressant prepared by this invention is formulated with fewer chemical raw materials, so it is simple to operate and easy to prepare. Attached Figure Description
[0031] Figure 1 The image shown is an illustration of the effect of a cylindrical sample block after the dust suppressant and soil are mixed.
[0032] Figure 2 The figure shown is a test diagram of the compressive strength without side marks;
[0033] Figure 3 The image shown is a test diagram of water resistance. Detailed Implementation
[0034] To facilitate the explanation of the technical solutions applied for, the terms and expressions used in this invention will first be explained and defined in general terms below.
[0035] In this document, all features defined by numerical ranges or percentage ranges, such as numerical values, quantities, contents, and concentrations, are for the sake of brevity and convenience only. Accordingly, descriptions of numerical ranges or percentage ranges should be considered as covering and specifically disclosing all possible sub-ranges and individual numerical values (including integers and fractions) within those ranges.
[0036] For the sake of brevity, not all possible combinations of the technical features in each implementation scheme or embodiment are described herein. Therefore, as long as there is no contradiction in the combination of these technical features, the technical features in each implementation scheme or embodiment can be combined arbitrarily, and all possible combinations should be considered within the scope of this specification.
[0037] The solids in this invention refer to all the residues remaining after the water has been drained, including soluble and insoluble residues.
[0038] The following examples use instruments and equipment conventional in the art. Experimental methods in the following examples, unless otherwise specified, are generally performed under conventional conditions or as recommended by the manufacturer. All raw materials used in the following examples are conventional commercially available products with specifications conventional in the art. In this specification and the following examples, unless otherwise specified, "%" refers to weight percentage, "parts" refers to parts by weight, and "ratio" refers to weight.
[0039] The relevant experiments listed in this invention refer to the following current national standards and specifications:
[0040] The evaluation and testing methods for dust suppression effects shall refer to the following standard: Appendix A of "Water-soluble Road Dust Suppressants, T / CAEPI 7-2017" for test methods;
[0041] For the test method of compressive strength without side marks, refer to the following standard: J / TG3430-2020, Specification for Geotechnical Testing of Highways;
[0042] The water resistance test method involves immersing a prepared cylindrical sample with no side marks and compressive strength in tap water for 24 hours and observing for any cracking or loosening. The test results are divided into the following four levels:
[0043] 1) Excellent grade: No significant changes were observed in the sample after soaking for 24 hours;
[0044] 2) Excellent grade, with only slight cracks or looseness, and the loose volume does not exceed 5%;
[0045] 3) Medium grade, with some cracks or loose parts, and the loose volume is approximately 5-30%;
[0046] 4) Poor grade, with significant cracking or loosening, and loose volume greater than 30%.
[0047] The effect diagram of the cylindrical sample block after mixing the dust suppressant and soil of this invention is shown in the figure below. Figure 1 As shown in the figure, the test diagram of the compressive strength without side marks is as follows. Figure 2 As shown in the figure, the test diagram of water resistance is as follows. Figure 3 As shown.
[0048] In the comparative experiments provided by this invention, unless otherwise specified, all other experimental conditions and materials are kept consistent, except for the differences indicated in each group, so as to ensure comparability.
[0049] Unless otherwise specified, all reagents and instruments used in the embodiments of this invention can be purchased from the market.
[0050] The following specific embodiments further illustrate the bio-based dust suppressant for road reinforcement provided by the present invention.
[0051] Example 1: Preparation of dust suppressant
[0052] The composition of the bio-based dust suppressant for road reinforcement is as follows: 100 parts xylose mother liquor (50% solids by weight, xylose by weight in the solids, purchased from Shandong Futian Pharmaceutical Co., Ltd., the same below) and 3 parts JEFFAMINE@D-230 (purchased from Huntsman Chemical Trading (Shanghai) Co., Ltd., the same below) were mixed evenly with an appropriate amount of water to achieve a uniform solids content of 50%. The bio-based dust suppressant was added at 10% of the soil volume for application. An appropriate amount of water was further added to achieve the optimal soil moisture content (to ensure data comparability, the following examples and comparative examples were added in the same manner). The non-side-mark compressive strength, water resistance, and dust suppression performance of the bio-based dust suppressant were then tested.
[0053] Example 2: Preparation of dust suppressant
[0054] The composition of the bio-based dust suppressant that can be used for road reinforcement is as follows: 100 parts xylose mother liquor and 17 parts of polyamine crosslinking agent JEFFAMINE@D-23017 parts are mixed evenly with an appropriate amount of water to prepare a solid content of 50%. Then, the non-side mark compressive strength, water resistance and dust suppression performance of the bio-based dust suppressant are tested according to the process requirements of Example 1.
[0055] Example 3: Preparation of dust suppressant
[0056] The composition of the bio-based dust suppressant that can be used for road reinforcement is as follows: 100 parts xylose mother liquor and 28 parts of polyamine crosslinking agent JEFFAMINE@D-2302 are mixed evenly with an appropriate amount of water to prepare a solid content of 50%. Then, the non-side mark compressive strength, water resistance and dust suppression performance of the bio-based dust suppressant are tested according to the process requirements of Example 1.
[0057] Example 4: Preparation of dust suppressant
[0058] The composition of the bio-based dust suppressant that can be used for road reinforcement is as follows: 100 parts xylose mother liquor and 35 parts of polyamine crosslinking agent JEFFAMINE@D-230 are mixed evenly with an appropriate amount of water to prepare a solid content of 50%. Then, the non-side mark compressive strength, water resistance and dust suppression performance of the bio-based dust suppressant are tested according to the process requirements of Example 1.
[0059] Example 5: Preparation of dust suppressant
[0060] The composition of the bio-based dust suppressant that can be used for road reinforcement is as follows: 100 parts xylose mother liquor and 50 parts polyamine crosslinking agent JEFFAMINE@D-230 are mixed evenly with an appropriate amount of water to prepare a solid content of 50%. Then, the non-side mark compressive strength, water resistance and dust suppression performance of the bio-based dust suppressant are tested according to the process requirements of Example 1.
[0061] Example 6: Preparation of dust suppressant
[0062] The composition of the bio-based dust suppressant that can be used for road reinforcement is as follows: 100 parts xylose mother liquor and 17 parts JEFFAMINE@D-400 (purchased from Huntsman Chemical Trading (Shanghai) Co., Ltd.) as a 100% solid content weight ratio are mixed evenly with the addition of an appropriate amount of water to prepare a 50% solid content. Then, the non-side mark compressive strength, water resistance and dust suppression performance of the bio-based dust suppressant are tested according to the process requirements of Example 1.
[0063] Example 7: Preparation of dust suppressant
[0064] The composition of the bio-based dust suppressant that can be used for road reinforcement is as follows: 100 parts xylose mother liquor and 17 parts of JEFFAMINE@EDR-403 (purchased from Huntsman Chemical Trading (Shanghai) Co., Ltd.) as a 100% solid content weight ratio are mixed evenly with the addition of an appropriate amount of water to prepare a 50% solid content. Then, the non-side mark compressive strength, water resistance and dust suppression performance of the bio-based dust suppressant are tested according to the process requirements of Example 1.
[0065] Example 8: Preparation of dust suppressant
[0066] The composition of the bio-based dust suppressant that can be used for road reinforcement is as follows: 100 parts xylose mother liquor and 17 parts tetraethylenepentamine, a polyamine crosslinking agent, are mixed evenly with an appropriate amount of water to prepare a solid content of 50%. Then, the non-side mark compressive strength, water resistance and dust suppression performance of the bio-based dust suppressant are tested according to the process requirements of Example 1.
[0067] Example 9: Preparation of dust suppressant
[0068] The composition of the bio-based dust suppressant that can be used for road reinforcement is as follows: 100 parts xylose mother liquor and 17 parts lysine, a polyamine crosslinking agent, are mixed evenly with an appropriate amount of water to prepare a solid content of 50%. Then, the non-side mark compressive strength, water resistance and dust suppression performance of the bio-based dust suppressant are tested according to the process requirements of Example 1.
[0069] Comparative Example 1: Preparation of Dust Suppressant
[0070] The composition of the bio-based dust suppressant that can be used for road reinforcement is as follows: 100 parts of xylose mother liquor are mixed evenly with an appropriate amount of water to prepare a solid content of 50% by weight, and then the non-side mark compressive strength, water resistance and dust suppression performance of the bio-based dust suppressant are tested according to the process requirements of Example 1.
[0071] Comparative Example 2: Preparation of Dust Suppressant
[0072] Composition of bio-based dust suppressant for road reinforcement: 17 parts of polyamine crosslinking agent JEFFAMINE@EDR-40317 parts were mixed evenly with an appropriate amount of water to achieve a solid content of 50% by weight of 100% solid content. Then, the non-side-mark compressive strength, water resistance and dust suppression performance of the bio-based dust suppressant were tested according to the process requirements of Example 1.
[0073] Comparative Example 3: Preparation of Dust Suppressant
[0074] The composition of the bio-based dust suppressant that can be used for road reinforcement is as follows: 100 parts xylose mother liquor and 55 parts of polyamine crosslinking agent JEFFAMINE@EDR-4035 are mixed evenly with an appropriate amount of water to prepare a solid content of 50%. Then, the non-side mark compressive strength, water resistance and dust suppression performance of the bio-based dust suppressant are tested according to the process requirements of Example 1.
[0075] Comparative Example 4: Preparation of Dust Suppressant
[0076] The composition of the bio-based dust suppressant that can be used for road reinforcement is as follows: 100 parts glucose and 17 parts polyamine crosslinking agent JEFFAMINE@EDR-403 are mixed evenly with an appropriate amount of water to achieve a solid content of 50%. Then, the non-side mark compressive strength, water resistance and dust suppression performance of the bio-based dust suppressant are tested according to the process requirements of Example 1.
[0077] The formulations of the dust suppressants prepared in the above embodiments and comparative examples are shown in Table 1, and their performance characterization is as follows: Figure 2 As shown.
[0078] Table 1. Composition of Dust Suppressant
[0079]
[0080]
[0081] Table 2. Dust suppressant performance test results
[0082]
[0083] As can be seen from the characterization results in Table 2, the dust suppressant prepared in this invention not only has excellent dust suppression efficiency, but also good water resistance and pressure resistance.
[0084] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solution of the present invention should be included within the scope of protection of the present invention.
Claims
1. A bio-based dust suppressant that can be used for road reinforcement, characterized in that, Based on 100% solid content, it contains the following components in the following weight ratio: 100 parts xylose mother liquor and 3-50 parts polyamine crosslinking agent.
2. The bio-based dust suppressant for road reinforcement according to claim 1, characterized in that, The xylose mother liquor contains 20% to 70% solids by mass, with the remainder being water; wherein the solids contain ≥50% reducing sugars by mass, the reducing sugars being mainly composed of D-xylose, L-arabinose, D-glucose and D-galactose, and the xylose content in the solids is ≥20% by mass.
3. The bio-based dust suppressant for road reinforcement according to claim 1, characterized in that, The product contains the following components in the indicated weight ratios: 100 parts xylose mother liquor and 5-30 parts polyamine crosslinking agent; wherein the xylose mother liquor contains 40%-70% solids by weight, with the remainder being water; wherein the solids contain ≥60% reducing sugars by weight, and the xylose content in the solids is ≥40% by weight.
4. The bio-based dust suppressant for road reinforcement according to claim 2, characterized in that, The product contains the following components in the indicated weight ratios: 100 parts xylose mother liquor and 5-25 parts polyamine crosslinking agent; wherein the xylose mother liquor contains 50%-70% solids by weight, with the remainder being water.
5. The bio-based dust suppressant for road reinforcement according to claim 1, characterized in that, The polyamine crosslinking agent is selected from primary diamine or polyamine.
6. The bio-based dust suppressant for road reinforcement according to claim 4, characterized in that, The primary diamine is selected from one or more of lysine, ethylenediamine, 1,6-hexanediamine, diaminodiphenylmethane, xylenediamine, JEFFAMINE@D-230, JEFFAMINE@D-400, JEFFAMINE@D-2000, or JEFFAMINE@EDR-148; the secondary primary diamine is selected from one or more of diethylenetriamine, triethylenetetramine, tetraethylenepentamine, or JEFFAMINE@403.
7. The bio-based dust suppressant for road reinforcement according to claim 5, characterized in that, The primary diamine is one or more of JEFFAMINE@D-230 or JEFFAMINE@D-400, and the secondary diamine is selected from one or more of JEFFAMINE@403, tetraethylenepentamine, or lysine.
8. The bio-based dust suppressant for road reinforcement according to any one of claims 1-7, characterized in that, The dust suppressant has a dust suppression efficiency of ≥82% under PM2.5 conditions; the dust suppressant has a dust suppression efficiency of ≥81% under PM10.0 conditions.
9. Use of the bio-based dust suppressant for road reinforcement as a soil stabilizer according to any one of claims 1-8.
10. The use according to claim 9, characterized in that, The dust suppressant has a non-marking compressive strength greater than or equal to 1.2 MPa.