CN115745556A - Plastering mortar not prone to cracking and falling and preparation method thereof - Google Patents
Plastering mortar not prone to cracking and falling and preparation method thereof Download PDFInfo
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- CN115745556A CN115745556A CN202310011801.7A CN202310011801A CN115745556A CN 115745556 A CN115745556 A CN 115745556A CN 202310011801 A CN202310011801 A CN 202310011801A CN 115745556 A CN115745556 A CN 115745556A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention relates to the technical field of plastering mortar, and discloses plastering mortar not easy to crack and fall off and a preparation method thereof, wherein the plastering mortar comprises cement, hydrated lime, phosphogypsum, sand, a novel anti-cracking agent, a thickening agent and an auxiliary agent; the weight of the thickening agent accounts for 0.3-1.4% of the total weight of the raw materials; the weight of the sand accounts for 60-82% of the total weight of the raw materials; the invention improves the cohesion and the adhesion force to the organism of the plastering mortar, increases the strength of the plastering mortar, adopts the lignocellulose to play a role in water guiding, can guide out the water inside when the water on the surface of the plastering mortar is evaporated more, ensures that the surface of the plastering mortar is not easy to crack, adopts the novel anti-cracking agent poly-p-phenylene benzobisoxazole fiber to further reduce the water loss rate of the plastering mortar, improves the anti-cracking property of the plastering mortar and has better heat preservation property while improving the workability and the cohesion of the plastering mortar.
Description
Technical Field
The invention belongs to the technical field of plastering mortar, and particularly relates to plastering mortar not easy to crack and fall off and a preparation method thereof.
Background
The concrete wall surface constructed by the large formwork is smooth and flat, but the wall surface constructed by the large formwork needs to be plastered and straightened at the positions of the joint of a longitudinal wall and a transverse wall, the joint of an upper layer and a lower layer of a staircase, a door and window opening and the like. Plastering refers to a surface course engineering of uniformly coating cement mortar on a wall surface after mixing and stirring dry cement mortar powder and clear water according to a certain proportion to form the cement mortar. The plastering work of the indoor and outdoor wall is a work after the construction of the building structure is finished, and the scientific plastering work can play the functions of moisture prevention, weathering prevention, heat insulation and the like, thereby preventing the wall body of the building from being eroded by wind, rain, snow and the like. The dry cement mortar powders used for wall plastering are generally referred to as plastering mortar dry powders. The common mortar used at present generally has poor water retention, is easy to cause the phenomenon of mortar cracking and even mortar pulverization due to the fact that the common mortar per se is inconsistent with the deformation of the light building block due to the isometric deformation of dry shrinkage, and has the defect of influencing the quality of the whole masonry.
Disclosure of Invention
The invention aims to provide plastering mortar which is not easy to crack and fall off and a preparation method thereof, the cohesive force of the plastering mortar and the adhesive force to a machine body are improved, the strength of the plastering mortar is increased, the adopted lignocellulose can play a role in water guide, when the surface water of the plastering mortar is evaporated more, the internal water can be guided out, so that the surface of the plastering mortar is not easy to crack, and the thixotropic agent improves the workability and the cohesiveness of the plastering mortar, and simultaneously further reduces the water loss rate of the plastering mortar, improves the crack resistance of the plastering mortar, the crack resistance of the plastering mortar and has better heat preservation property by adopting a novel anti-cracking agent poly-p-phenylene benzobisoxazole fiber.
The technical scheme adopted by the invention is as follows: the plastering mortar not easy to crack and fall off comprises cement, hydrated lime, phosphogypsum, sand, a novel anti-cracking agent, a thickening agent and an auxiliary agent;
the weight of the thickening agent accounts for 0.3-1.4% of the total weight of the raw materials; the weight of the sand accounts for 60-82% of the total weight of the raw materials.
Optionally, the novel anti-cracking agent comprises poly-p-phenylene benzobisoxazole fibers and lignocellulose.
Optionally, the preparation method of the poly-p-phenylene benzobisoxazole fiber comprises the following steps:
(1) the method is characterized in that 4,6-diaminoresorcinol and terephthaloyl chloride are used as raw materials to synthesize poly [ N- (2,4-dihydroxyphenyl) -1,4-benzenedicarboxamide ], and hydrogen chloride can be removed in a system with lower viscosity;
(2) dissolving poly [ N- (2,4-dihydroxy benzene) -1,4-benzenedicarboxamide ] in polyphosphoric acid, heating and cyclizing in a double-screw extruder to prepare a poly (p-phenylene benzobisoxazole) homogeneous phase solution; and then directly adopting a double-screw extruder to carry out filtration and deaeration, entering a spinning assembly, and carrying out spinning, washing, drying and winding to obtain the poly-p-phenylene benzobisoxazole fiber.
Optionally, the poly-p-phenylene benzobisoxazole fiber comprises one or more of the following characteristics:
(1) in the poly (p-phenylene-benzobisoxazole) fiber, the mass ratio of the modifier to the polypropylene fiber is (0.03-0.18): 1;
(2) the fineness of the poly-p-phenylene benzobisoxazole fiber is 3.5dtex to 10dtex;
(3) the length of the poly-p-phenylene benzobisoxazole fiber is 3-9 mm.
Optionally, the plastering mortar comprises the following raw materials in percentage by weight:
10 to 25 percent of cement, 0 to 11 percent of hydrated lime, 0 to 5 percent of phosphogypsum, 62 to 84 percent of sand, 0.2 to 0.8 percent of novel anti-cracking agent, 0.5 to 1.5 percent of thickening agent and 0.5 to 1.5 percent of auxiliary agent.
Optionally, the plastering mortar comprises one or more of the following characteristics:
(1) the sand satisfies: the grain size distribution of not less than 90wt% of sand is 80-140 meshes, and the grain size distribution of not less than 60wt% of sand is 100-120 meshes;
(2) the thickening agent is selected from one or more of hydroxypropyl methyl cellulose, hydroxyethyl cellulose and methyl cellulose.
Optionally, the plastering mortar comprises one or more of the following characteristics:
(1) the raw material does not contain heavy calcium powder;
(2) the raw materials do not comprise redispersible latex powder;
(3) the starting material does not comprise polyvinyl alcohol.
Optionally, the wetting agent is a polyoxyethylene alkylating ether.
Optionally, the preparation method of the plastering mortar not easy to crack and fall off comprises the following steps:
mixing cement, hydrated lime, phosphogypsum, sand, a novel anti-cracking agent, a thickening agent and an auxiliary agent to prepare the plastering mortar.
The invention has the technical effects that:
(1) According to the scheme, the plastering mortar is prepared by mixing and mutually matching cement, hydrated lime, phosphogypsum, sand, a novel anti-cracking agent, a thickening agent and an auxiliary agent, so that the cohesion and the adhesion to a machine body of the plastering mortar are improved, the strength of the plastering mortar is increased, the adopted lignocellulose can play a role in water guiding, when the surface moisture of the plastering mortar is evaporated more, the water in the plastering mortar can be guided out, the surface of the plastering mortar is not easy to crack, and the thixotropic agent improves the workability and the cohesion of the plastering mortar, and simultaneously adopts the novel anti-cracking agent poly-p-phenylene benzobisoxazole fiber, so that the dehydration rate of the plastering mortar is further reduced, the crack resistance of the plastering mortar and the crack resistance of the plastering mortar are improved, and the heat insulation performance is better.
(2) The ardealite has stronger bonding property, basically eliminates hollowing and cracking, reduces reworking, has less ash falling to the ground during construction, reduces material waste and cleaning labor, is more suitable for construction in winter, and can save a large amount of construction heat-insulating cost in winter. The fireproof, sound insulation and heat preservation of the building can be improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the contents in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The invention provides plastering mortar not easy to crack and fall, which comprises cement, hydrated lime, phosphogypsum, sand, a novel anti-cracking agent, a thickening agent and an auxiliary agent; the auxiliary agent can be lime king, metogle, rock sand essence, mortar king, mortar treasure, cement additive, cement plasticizer and the like.
The ardealite has stronger bonding property, basically eliminates hollowing and cracking, reduces reworking, has less ash falling to the ground during construction, reduces material waste and cleaning labor, is more suitable for construction in winter, and can save a large amount of construction heat-insulating cost in winter. The fireproof, sound insulation and heat preservation of the building can be improved.
The weight of the thickening agent accounts for 0.3 percent of the total weight of the raw materials; the weight of the sand accounts for 60 percent of the total weight of the raw materials. The thickening agent is generally selected from ethoxylated sodium alkyl sulfide, sodium dodecyl sulfate, water reducing agent and the like
In some embodiments, the novel anticracking agent comprises poly-p-phenylene benzobisoxazole fibers and lignocellulose;
the preparation method of the poly-p-phenylene benzobisoxazole fiber comprises the following steps:
(1) the method is characterized in that 4,6-diaminoresorcinol and terephthaloyl chloride are used as raw materials to synthesize poly [ N- (2,4-dihydroxyphenyl) -1,4-benzenedicarboxamide ], and hydrogen chloride can be removed in a system with lower viscosity;
(2) dissolving poly [ N- (2,4-dihydroxy benzene) -1,4-benzenedicarboxamide ] in polyphosphoric acid, and heating and cyclizing in a double-screw extruder to prepare a poly (p-phenylene benzobisoxazole) homogeneous phase solution; and then directly adopting a double-screw extruder to carry out filtration and deaeration, entering a spinning assembly, and carrying out spinning, washing, drying and winding to obtain the poly-p-phenylene benzobisoxazole fiber.
In some embodiments, the polyparaphenylene benzobisoxazole fiber comprises one or more of the following characteristics:
(1) in the poly (p-phenylene-benzobisoxazole) fiber, the mass ratio of the modifier to the polypropylene fiber is (0.03-0.18): 1;
(2) the fineness of the poly-p-phenylene benzobisoxazole fiber is 3.5dtex;
(3) the length of the poly-p-phenylene benzobisoxazole fiber is 3mm.
In some embodiments, the plastering mortar comprises the following raw materials in percentage by weight:
10% of cement, 0-11% of hydrated lime, 1% of phosphogypsum, 62% of sand, 0.2% of novel anti-cracking agent, 0.5-1.5% of thickening agent and 0.5-1.5% of auxiliary agent.
In some embodiments, the plastering mortar includes one or more of the following features:
(1) the sand satisfies: the grain size distribution of not less than 90wt% of sand is 80-140 meshes, and the grain size distribution of not less than 60wt% of sand is 100-120 meshes;
(2) the thickening agent is selected from one or more of hydroxypropyl methyl cellulose, hydroxyethyl cellulose and methyl cellulose.
In some embodiments, the plastering mortar includes one or more of the following features:
(1) the raw material does not contain heavy calcium powder;
(2) the raw materials do not comprise redispersible latex powder;
(3) the starting material does not comprise polyvinyl alcohol.
In practical application, the preparation method of the plastering mortar not easy to crack and fall comprises the following steps:
and mixing the cement, the hydrated lime, the phosphogypsum, the sand, the novel anti-cracking agent, the thickening agent and the auxiliary agent to prepare the plastering mortar.
Example 2
The invention provides plastering mortar not easy to crack and fall, which comprises cement, hydrated lime, phosphogypsum, sand, a novel anti-cracking agent, a thickening agent and an auxiliary agent; the auxiliary agent can be lime king, metogle, rock sand essence, mortar king, mortar treasure, cement additive, cement plasticizer and the like.
The ardealite has stronger bonding property, basically eliminates hollowing and cracking, reduces reworking, has less ash falling to the ground during construction, reduces material waste and cleaning labor, is more suitable for construction in winter, and can save a large amount of construction heat-insulating cost in winter. The fireproof, sound insulation and heat preservation of the building can be improved.
The weight of the thickening agent accounts for 0.9 percent of the total weight of the raw materials; the weight of the sand accounts for 69 percent of the total weight of the raw materials. The thickening agent is generally selected from ethoxylated sodium alkyl sulfide, sodium dodecyl sulfate, water reducing agent and the like
In some embodiments, the novel anticracking agent comprises poly-p-phenylene benzobisoxazole fibers and lignocellulose;
the preparation method of the poly-p-phenylene benzobisoxazole fiber comprises the following steps:
(1) the method is characterized in that 4,6-diaminoresorcinol and terephthaloyl chloride are used as raw materials to synthesize poly [ N- (2,4-dihydroxyphenyl) -1,4-benzenedicarboxamide ], and hydrogen chloride can be removed in a system with lower viscosity;
(2) dissolving poly [ N- (2,4-dihydroxy benzene) -1,4-benzenedicarboxamide ] in polyphosphoric acid, heating and cyclizing in a double-screw extruder to prepare a poly (p-phenylene benzobisoxazole) homogeneous phase solution; and then directly adopting a double-screw extruder for filtering and defoaming, entering a spinning assembly, spinning, washing, drying and winding to obtain the poly-p-phenylene benzobisoxazole fiber.
In some embodiments, the polyparaphenylene benzobisoxazole fiber comprises one or more of the following characteristics:
(1) in the poly (p-phenylene-benzobisoxazole) fiber, the mass ratio of the modifier to the polypropylene fiber is (0.03-0.18): 1;
(2) the fineness of the poly-p-phenylene benzobisoxazole fiber is 3.5dtex to 10dtex;
(3) the length of the poly-p-phenylene benzobisoxazole fiber is 3-9 mm.
In some embodiments, the plastering mortar comprises the following raw materials in percentage by weight:
20 percent of cement, 0 to 11 percent of hydrated lime, 3 percent of phosphogypsum, 70 percent of sand, 0.2 to 0.8 percent of novel anti-cracking agent, 0.5 to 1.5 percent of thickening agent and 0.5 to 1.5 percent of auxiliary agent.
In some embodiments, the plastering mortar includes one or more of the following features:
(1) the sand satisfies: the grain size distribution of not less than 90wt% of sand is 80-140 meshes, and the grain size distribution of not less than 60wt% of sand is 100-120 meshes;
(2) the thickening agent is selected from one or more of hydroxypropyl methyl cellulose, hydroxyethyl cellulose and methyl cellulose.
In some embodiments, the plastering mortar includes one or more of the following features:
(1) the raw material does not contain heavy calcium powder;
(2) the raw materials do not comprise redispersible latex powder;
(3) the starting material does not comprise polyvinyl alcohol.
In practical application, the preparation method of the plastering mortar not easy to crack and fall off comprises the following steps:
and mixing the cement, the hydrated lime, the phosphogypsum, the sand, the novel anti-cracking agent, the thickening agent and the auxiliary agent to prepare the plastering mortar.
Example 3
The invention provides plastering mortar not easy to crack and fall, which comprises cement, hydrated lime, phosphogypsum, sand, a novel anti-cracking agent, a thickening agent and an auxiliary agent; the auxiliary agent can be lime king, metogle, rock sand essence, mortar king, mortar treasure, cement additive, cement plasticizer and the like.
The ardealite has stronger bonding property, basically eliminates hollowing and cracking, reduces reworking, has less ash falling to the ground during construction, reduces material waste and cleaning labor, is more suitable for construction in winter, and can save a large amount of construction heat-insulating cost in winter. The fireproof, sound insulation and heat preservation of the building can be improved.
The weight of the thickening agent accounts for 1.4 percent of the total weight of the raw materials; the weight of the sand accounts for 82% of the total weight of the raw materials. The thickening agent is generally selected from ethoxylated sodium alkyl sulfide, sodium dodecyl sulfate, water reducing agent and the like
In some embodiments, the novel anticracking agent comprises poly-p-phenylene benzobisoxazole fibers and lignocellulose;
the preparation method of the poly-p-phenylene benzobisoxazole fiber comprises the following steps:
(1) the method is characterized in that 4,6-diaminoresorcinol and terephthaloyl chloride are used as raw materials to synthesize poly [ N- (2,4-dihydroxyphenyl) -1,4-benzenedicarboxamide ], and hydrogen chloride can be removed in a system with lower viscosity;
(2) dissolving poly [ N- (2,4-dihydroxy benzene) -1,4-benzenedicarboxamide ] in polyphosphoric acid, and heating and cyclizing in a double-screw extruder to prepare a poly (p-phenylene benzobisoxazole) homogeneous phase solution; and then directly adopting a double-screw extruder to carry out filtration and deaeration, entering a spinning assembly, and carrying out spinning, washing, drying and winding to obtain the poly-p-phenylene benzobisoxazole fiber.
In some embodiments, the polyparaphenylene benzobisoxazole fiber comprises one or more of the following characteristics:
(1) in the poly (p-phenylene-benzobisoxazole) fiber, the mass ratio of the modifier to the polypropylene fiber is (0.03-0.18): 1;
(2) the fineness of the poly-p-phenylene benzobisoxazole fiber is 3.5dtex to 10dtex;
(3) the length of the poly-p-phenylene benzobisoxazole fiber is 3-9 mm.
In some embodiments, the plastering mortar comprises the following raw materials in percentage by weight:
25 percent of cement, 0 to 11 percent of hydrated lime, 5 percent of phosphogypsum, 62 percent of sand, 0.2 to 0.8 percent of novel anti-cracking agent, 0.5 to 1.5 percent of thickening agent and 0.5 to 1.5 percent of auxiliary agent.
In some embodiments, the plastering mortar includes one or more of the following features:
(1) the sand satisfies: the grain size distribution of not less than 90wt% of sand is 80-140 meshes, and the grain size distribution of not less than 60wt% of sand is 100-120 meshes;
(2) the thickening agent is selected from one or more of hydroxypropyl methyl cellulose, hydroxyethyl cellulose and methyl cellulose.
In some embodiments, the plastering mortar includes one or more of the following features:
(1) the raw material does not contain heavy calcium powder;
(2) the raw materials do not comprise redispersible latex powder;
(3) the starting material does not comprise polyvinyl alcohol.
In practical application, the preparation method of the plastering mortar not easy to crack and fall off comprises the following steps:
and mixing the cement, the hydrated lime, the phosphogypsum, the sand, the novel anti-cracking agent, the thickening agent and the auxiliary agent to prepare the plastering mortar.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (9)
1. The plastering mortar not easy to crack and fall off is characterized by comprising cement, hydrated lime, phosphogypsum, sand, a novel anti-cracking agent, a thickening agent and an auxiliary agent;
the weight of the thickening agent accounts for 0.3-1.4% of the total weight of the raw materials; the weight of the sand accounts for 60-82% of the total weight of the raw materials.
2. The plastering mortar not easy to crack and fall off of claim 1, wherein: the novel anti-cracking agent comprises poly-p-phenylene benzobisoxazole fiber and lignocellulose.
3. The plastering mortar not easy to crack and fall off and the preparation method thereof as claimed in claim 2, wherein the plastering mortar is characterized in that: the preparation method of the poly-p-phenylene benzobisoxazole fiber comprises the following steps:
(1) the method is characterized in that 4,6-diaminoresorcinol and terephthaloyl chloride are used as raw materials to synthesize poly [ N- (2,4-dihydroxyphenyl) -1,4-benzenedicarboxamide ], and hydrogen chloride can be removed in a system with lower viscosity;
(2) dissolving poly [ N- (2,4-dihydroxy benzene) -1,4-benzenedicarboxamide ] in polyphosphoric acid, heating and cyclizing in a double-screw extruder to prepare a poly (p-phenylene benzobisoxazole) homogeneous phase solution; and then directly adopting a double-screw extruder to carry out filtration and deaeration, entering a spinning assembly, and carrying out spinning, washing, drying and winding to obtain the poly-p-phenylene benzobisoxazole fiber.
4. The plastering mortar not easy to crack and fall off according to claim 3, wherein: the poly-p-phenylene benzobisoxazole fiber includes one or more of the following characteristics:
(1) in the poly (p-phenylene-benzobisoxazole) fiber, the mass ratio of the modifier to the polypropylene fiber is (0.03-0.18): 1;
(2) the fineness of the poly-p-phenylene benzobisoxazole fiber is 3.5dtex to 10dtex;
(3) the length of the poly-p-phenylene benzobisoxazole fiber is 3-9 mm.
5. The plastering mortar not easy to crack and fall off according to claim 1, wherein: the plastering mortar comprises the following raw materials in percentage by weight:
10 to 25 percent of cement, 0 to 11 percent of hydrated lime, 0 to 5 percent of phosphogypsum, 62 to 84 percent of sand, 0.2 to 0.8 percent of novel anti-cracking agent, 0.5 to 1.5 percent of thickening agent and 0.5 to 1.5 percent of auxiliary agent.
6. The plastering mortar not easy to crack and fall off of claim 1, wherein: the plastering mortar comprises one or more of the following characteristics:
(1) the sand satisfies: the grain size distribution of not less than 90wt% of sand is 80-140 meshes, and the grain size distribution of not less than 60wt% of sand is 100-120 meshes;
(2) the thickening agent is selected from one or more of hydroxypropyl methyl cellulose, hydroxyethyl cellulose and methyl cellulose.
7. The plastering mortar not easy to crack and fall off of claim 1, wherein: the plastering mortar comprises one or more of the following characteristics:
(1) the raw material does not contain heavy calcium powder;
(2) the raw materials do not comprise redispersible latex powder;
(3) the starting material does not comprise polyvinyl alcohol.
8. The plastering mortar not easy to crack and fall off of claim 1, wherein: the wetting agent is a polyoxyethylene alkylated ether.
9. The preparation method of the plastering mortar not easy to crack and fall off according to any one of claims 1 to 8, wherein the method comprises the following steps: the method comprises the following steps:
mixing cement, hydrated lime, phosphogypsum, sand, a novel anti-cracking agent, a thickening agent and an auxiliary agent according to any one of claims 1 to 8 to prepare the plastering mortar.
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| CN202310011801.7A CN115745556A (en) | 2023-01-05 | 2023-01-05 | Plastering mortar not prone to cracking and falling and preparation method thereof |
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| CN202310011801.7A CN115745556A (en) | 2023-01-05 | 2023-01-05 | Plastering mortar not prone to cracking and falling and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296376A (en) * | 2011-07-05 | 2011-12-28 | 深圳市中晟创新科技股份有限公司 | Production method of poly-p-phenylene benzodioxazole fibers |
| CN114086273A (en) * | 2021-12-17 | 2022-02-25 | 南通强生石墨烯科技有限公司 | Graphene anti-ultraviolet anti-cutting high-stretch-resistance composite fiber and preparation method thereof |
| CN114349457A (en) * | 2022-01-25 | 2022-04-15 | 浙江鼎峰科技股份有限公司 | Rubber particle modified sound insulation mortar for building and preparation method thereof |
| CN115286335A (en) * | 2022-09-06 | 2022-11-04 | 西卡德高(上海)建材有限公司 | Plastering mortar and preparation method thereof |
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2023
- 2023-01-05 CN CN202310011801.7A patent/CN115745556A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296376A (en) * | 2011-07-05 | 2011-12-28 | 深圳市中晟创新科技股份有限公司 | Production method of poly-p-phenylene benzodioxazole fibers |
| CN114086273A (en) * | 2021-12-17 | 2022-02-25 | 南通强生石墨烯科技有限公司 | Graphene anti-ultraviolet anti-cutting high-stretch-resistance composite fiber and preparation method thereof |
| CN114349457A (en) * | 2022-01-25 | 2022-04-15 | 浙江鼎峰科技股份有限公司 | Rubber particle modified sound insulation mortar for building and preparation method thereof |
| CN115286335A (en) * | 2022-09-06 | 2022-11-04 | 西卡德高(上海)建材有限公司 | Plastering mortar and preparation method thereof |
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