CN114262172B - Pretreatment agent and pretreatment method for artificial granite raw material - Google Patents
Pretreatment agent and pretreatment method for artificial granite raw material Download PDFInfo
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- CN114262172B CN114262172B CN202111380835.0A CN202111380835A CN114262172B CN 114262172 B CN114262172 B CN 114262172B CN 202111380835 A CN202111380835 A CN 202111380835A CN 114262172 B CN114262172 B CN 114262172B
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Abstract
The invention discloses a pretreating agent for artificial granite raw materials, which comprises the following components in parts by weight: 1-5 parts of activating agent and 0.5-3 parts of cross-linking agent; the activating agent comprises the following components in parts by mass: 45-60 parts of styrene, 5-15 parts of silane coupling agent, 5-10 parts of chelating titanate, 5-10 parts of acrylamide and 5-15 parts of unsaturated polyester resin; the cross-linking agent comprises the following components in parts by mass: 60 to 90.995 portions of styrene, 5 to 35 portions of unsaturated polyester resin and 0.1 to 0.5 portion of azodiisobutyronitrile. The pretreatment of the artificial granite aggregate by the pretreatment agent is carried out by firstly adding the activating agent into the artificial granite aggregate for one time and fully stirring, then slowly adding the cross-linking agent into the artificial granite aggregate and fully stirring, and then producing the artificial granite product from the artificial granite aggregate according to the conventional process. The invention can reduce the resin consumption, thereby reducing the production cost.
Description
Technical Field
The invention belongs to the technical field of artificial stone production, and particularly relates to a pretreatment agent and a pretreatment method for an artificial granite raw material.
Background
The artificial granite is also called synthetic stone, reconstructed stone and engineering stone. The granite contains more than 92 percent of natural marble, so the granite keeps the noble and elegant characteristics of the natural stone, has the characteristics of bright color, uniform color, accurate size, high degree of finish, compression resistance, wear resistance, good air permeability, environmental protection, capability of being renovated for many times and the like, has small color difference, no radiation, high strength, stable quality, light weight, easy cutting and simple installation method, and is an international popular green environment-friendly decorative material.
The artificial granite mainly takes calcium carbonate ore powder and unsaturated polyester resin as main raw materials, and is formed into a final product through the steps of stirring, mixing, pressing, curing, forming, cutting, polishing and the like, wherein the unsaturated polyester resin is mainly prepared by polycondensation of dibasic acid (or anhydride) and dihydric alcohol under the action of an initiator and an accelerator. However, in the production process, the polarity difference between the calcium carbonate powder raw material and the unsaturated polyester is large, the compatibility is poor, the simple coating combination degree is low, and the resin consumption is large.
Disclosure of Invention
Aiming at the defects, the invention discloses a pretreatment agent and a pretreatment method for an artificial granite raw material, which reduce the consumption of resin and further reduce the production cost.
The invention is realized by adopting the following technical scheme:
a pretreating agent for an artificial granite raw material comprises the following components in parts by weight: 1-5 parts of activating agent and 0.5-3 parts of cross-linking agent; the activating agent comprises the following components in parts by mass: 45-60 parts of styrene, 5-15 parts of silane coupling agent, 5-10 parts of chelating titanate, 5-10 parts of acrylamide and 5-15 parts of unsaturated polyester resin; the cross-linking agent comprises the following components in parts by mass: 60 to 90.995 portions of styrene, 5 to 35 portions of unsaturated polyester resin and 0.1 to 0.5 portion of azodiisobutyronitrile.
Further, the silane coupling agent is any one of a silane coupling agent KH550, a silane coupling agent KH570 and a silane coupling agent KH590.
The pretreatment method for the artificial granite raw material, which adopts the pretreatment agent to carry out pretreatment on the artificial granite aggregate, comprises the following steps:
(1) Quantitatively weighing styrene, a silane coupling agent, chelate titanate, acrylamide and unsaturated polyester resin, and uniformly mixing to obtain an activating agent for later use; quantitatively weighing styrene, unsaturated polyester resin and azodiisobutyronitrile, and uniformly mixing to obtain a cross-linking agent for later use;
(2) Weighing the following raw materials in parts by weight: 100 parts of artificial granite aggregate, 1-5 parts of activating agent and 0.5-3 parts of cross-linking agent; adding an activating agent into the artificial granite aggregate at one time, fully stirring for 15-30 min, then slowly adding a cross-linking agent into the artificial granite aggregate, fully stirring for 15-30 min, then uniformly mixing the artificial granite aggregate, unsaturated polyester resin and a curing agent, then sending the mixture to a press for pressing, curing the pressed artificial granite, and obtaining an artificial granite product after complete forming.
Further, in the step (2), the activating agent is added into the artificial granite aggregate at one time and is fully stirred for 15-30 min under the condition that the stirring speed is 80-150 r/min.
Further, in the step (2), the cross-linking agent is slowly added into the artificial granite aggregate and fully stirred for 15-30 min under the condition that the stirring speed is 50-100 r/min.
Compared with the prior art, the technical scheme has the following beneficial effects:
1. the invention adopts styrene, silane coupling agent, chelating titanate, acrylamide and unsaturated polyester resin to prepare an activating agent according to a proportion, the activating agent is fully contacted with the artificial granite aggregate, the coupling agent in the activating agent is bonded with calcium carbonate in the aggregate to complete activation modification, and a small amount of unsaturated polyester resin is promoted to form primary coating; then adding a cross-linking agent obtained by quantitatively mixing styrene, unsaturated polyester resin and azodiisobutyronitrile, and carrying out cross-linking polymerization in advance after adding the cross-linking agent to form a low-molecular-weight polymer to further coat the calcium carbonate raw material, thereby completing the pretreatment of the artificial granite raw material.
After the pretreatment, the surface property of the raw material of the artificial granite is completely changed to form an oleophylic hydrophobic surface layer, and part of low molecular weight polymer exists, so that a good reaction environment is created for adding, mixing and curing of unsaturated polyester resin in the subsequent production process, wherein part of styrene which is not crosslinked and polymerized can be continuously used as a proper diluent, the viscosity of the unsaturated polyester resin is further reduced, the raw material is favorably and fully infiltrated, coated and cured, the mechanical property of the obtained artificial granite product is not reduced, and the resin consumption is greatly reduced compared with that of the existing process, so that the production cost is effectively reduced.
2. After the pretreatment is carried out by adopting the method, the artificial granite product with the same performance is produced under the condition of the same formula of the artificial granite aggregate, and the total dosage of the unsaturated polyester resin is reduced to 3-5 percent from the original 6.8-8.5 percent.
3. The pretreatment method disclosed by the invention is simple in process, convenient to operate, free of heating and special equipment, can finish the preparation of the pretreatment agent and the pretreatment of the artificial granite principle by using the existing production equipment, and is suitable for large-scale and automatic production of the artificial granite product.
Detailed Description
The invention is further illustrated by the following examples, which are not to be construed as limiting the invention thereto. The specific experimental conditions and methods not indicated in the following examples are generally conventional means well known to those skilled in the art.
Example 1:
the pretreating agent for the artificial granite raw material comprises the following components in parts by weight: 3 parts of an activating agent and 2 parts of a crosslinking agent; the activating agent comprises the following components in parts by mass: 50 parts of styrene, 10 parts of silane coupling agent, 6 parts of chelating titanate, 9 parts of acrylamide and 14 parts of unsaturated polyester resin; the cross-linking agent comprises the following components in parts by mass: 65 parts of styrene, 34.9 parts of unsaturated polyester resin and 0.1 part of azodiisobutyronitrile; the silane coupling agent is a silane coupling agent KH550.
A method for pretreating artificial granite raw materials, which adopts the pretreatment agent described in the embodiment to pretreat artificial granite aggregates, comprises the following steps:
(1) Quantitatively weighing styrene, a silane coupling agent, chelate titanate, acrylamide and unsaturated polyester resin, and uniformly mixing to obtain an activating agent for later use; quantitatively weighing styrene, unsaturated polyester resin and azodiisobutyronitrile, and uniformly mixing to obtain a cross-linking agent for later use;
(2) Weighing the following raw materials in parts by mass: 100 parts of artificial granite aggregate, 3 parts of an activating agent and 2 parts of a cross-linking agent; adding an activating agent into the artificial granite aggregate at one time, fully stirring for 20min under the condition of a stirring speed of 100r/min, then slowly adding a cross-linking agent into the artificial granite aggregate, controlling the adding time within 5min, fully stirring for 25min under the condition of a stirring speed of 60r/min, then uniformly mixing the artificial granite aggregate, unsaturated polyester resin and a curing agent, then sending the mixture to a press for pressing, curing and maintaining the artificial granite obtained by pressing, and obtaining the artificial granite product after complete forming.
Example 2:
the pretreating agent for the artificial granite raw material comprises the following components in parts by weight: 1 part of activating agent and 0.5 part of cross-linking agent; the activating agent comprises the following components in parts by mass: 45 parts of styrene, 5 parts of silane coupling agent, 5 parts of chelating titanate, 5 parts of acrylamide and 5 parts of unsaturated polyester resin; the cross-linking agent comprises the following components in parts by mass: 60 parts of styrene, 5 parts of unsaturated polyester resin and 0.1 part of azodiisobutyronitrile; the silane coupling agent is a silane coupling agent KH570.
A method for pretreating artificial granite raw materials, which adopts the pretreatment agent described in the embodiment to pretreat artificial granite aggregates, comprises the following steps:
(1) Quantitatively weighing styrene, a silane coupling agent, chelate titanate, acrylamide and unsaturated polyester resin, and uniformly mixing to obtain an activating agent for later use; quantitatively weighing styrene, unsaturated polyester resin and azodiisobutyronitrile, and uniformly mixing to obtain a cross-linking agent for later use;
(2) Weighing the following raw materials in parts by weight: 100 parts of artificial granite aggregate, 1 part of activating agent and 0.5 part of cross-linking agent; adding an activating agent into the artificial granite aggregate at one time, fully stirring for 15min under the condition of a stirring speed of 80r/min, then slowly adding a cross-linking agent into the artificial granite aggregate, controlling the adding time within 5min, fully stirring for 15min under the condition of a stirring speed of 50r/min, then uniformly mixing the artificial granite aggregate, unsaturated polyester resin and a curing agent, then sending the mixture to a press for pressing, curing and maintaining the artificial granite obtained by pressing, and obtaining the artificial granite product after complete forming.
Example 3:
a pretreating agent for an artificial granite raw material comprises the following components in parts by weight: 2 parts of an activating agent and 1 part of a cross-linking agent; the activating agent comprises the following components in parts by mass: 50 parts of styrene, 10 parts of silane coupling agent, 6 parts of chelating titanate, 8 parts of acrylamide and 10 parts of unsaturated polyester resin; the cross-linking agent comprises the following components in parts by mass: 75 parts of styrene, 20 parts of unsaturated polyester resin and 0.2 part of azodiisobutyronitrile; the silane coupling agent is a silane coupling agent KH590.
A method for pretreating artificial granite raw materials, which adopts the pretreatment agent described in the embodiment to pretreat artificial granite aggregates, comprises the following steps:
(1) Quantitatively weighing styrene, a silane coupling agent, chelate titanate, acrylamide and unsaturated polyester resin, and uniformly mixing to obtain an activating agent for later use; quantitatively weighing styrene, unsaturated polyester resin and azodiisobutyronitrile, and uniformly mixing to obtain a cross-linking agent for later use;
(2) Weighing the following raw materials in parts by weight: 100 parts of artificial granite aggregate, 2 parts of activating agent and 1 part of cross-linking agent; adding an activating agent into the artificial granite aggregate at one time, fully stirring for 25min under the condition of stirring speed of 120r/min, then slowly adding a cross-linking agent into the artificial granite aggregate, controlling the adding time within 5min, fully stirring for 30min under the condition of stirring speed of 80r/min, then uniformly mixing the artificial granite aggregate, unsaturated polyester resin and a curing agent, then sending the mixture to a press for pressing, curing and maintaining the artificial granite obtained by pressing, and obtaining the artificial granite product after complete forming.
Example 4:
a pretreating agent for an artificial granite raw material comprises the following components in parts by weight: 5 parts of an activating agent and 3 parts of a crosslinking agent; the activating agent comprises the following components in parts by mass: 60 parts of styrene, 15 parts of silane coupling agent, 10 parts of chelating titanate, 10 parts of acrylamide and 15 parts of unsaturated polyester resin; the cross-linking agent comprises the following components in parts by mass: 90.995 parts of styrene, 35 parts of unsaturated polyester resin and 0.5 part of azobisisobutyronitrile; the silane coupling agent is a silane coupling agent KH550.
A method for pretreating artificial granite raw materials, which adopts the pretreatment agent described in the embodiment to pretreat artificial granite aggregates, comprises the following steps:
(1) Quantitatively weighing styrene, a silane coupling agent, chelate titanate, acrylamide and unsaturated polyester resin, and uniformly mixing to obtain an activating agent for later use; quantitatively weighing styrene, unsaturated polyester resin and azodiisobutyronitrile, and uniformly mixing to obtain a cross-linking agent for later use;
(2) Weighing the following raw materials in parts by weight: 100 parts of artificial granite aggregate, 5 parts of an activating agent and 3 parts of a cross-linking agent; adding an activating agent into the artificial granite aggregate at one time, fully stirring for 30min under the condition of a stirring speed of 150r/min, then slowly adding a cross-linking agent into the artificial granite aggregate, controlling the adding time within 5min, fully stirring for 30min under the condition of a stirring speed of 100r/min, then uniformly mixing the artificial granite aggregate, unsaturated polyester resin and a curing agent, then sending the mixture to a press for pressing, curing and maintaining the artificial granite obtained by pressing, and obtaining the artificial granite product after complete forming.
Example 5:
a pretreating agent for an artificial granite raw material comprises the following components in parts by weight: 4 parts of an activating agent and 2 parts of a crosslinking agent; the activating agent comprises the following components in parts by mass: 55 parts of styrene, 12 parts of silane coupling agent, 8 parts of chelating titanate, 7 parts of acrylamide and 8 parts of unsaturated polyester resin; the cross-linking agent comprises the following components in parts by mass: 85 parts of styrene, 30 parts of unsaturated polyester resin and 0.35 part of azodiisobutyronitrile; the silane coupling agent is a silane coupling agent KH590.
The pretreatment method for the artificial granite raw material, which adopts the pretreatment agent described in the embodiment to pretreat the artificial granite aggregate, specifically comprises the following steps:
(1) Quantitatively weighing styrene, a silane coupling agent, chelate titanate, acrylamide and unsaturated polyester resin, and uniformly mixing to obtain an activating agent for later use; quantitatively weighing styrene, unsaturated polyester resin and azodiisobutyronitrile, and uniformly mixing to obtain a cross-linking agent for later use;
(2) Weighing the following raw materials in parts by weight: 100 parts of artificial granite aggregate, 4 parts of activating agent and 2 parts of cross-linking agent; adding an activating agent into the artificial granite aggregate at one time, fully stirring for 30min under the condition of stirring speed of 90r/min, then slowly adding a cross-linking agent into the artificial granite aggregate, controlling the adding time within 5min, fully stirring for 25min under the condition of stirring speed of 60r/min, then uniformly mixing the artificial granite aggregate, unsaturated polyester resin and a curing agent, then sending the mixture to a press for pressing, curing and maintaining the artificial granite obtained by pressing, and obtaining the artificial granite product after complete forming.
Comparative example 1:
the difference between the comparative example and the example 1 is that the artificial granite aggregate is directly and uniformly mixed with the unsaturated polyester resin and the curing agent without being pretreated, and then the mixture is sent to a press for pressing, and then the artificial granite obtained by pressing is cured and cured until being completely molded, so that the artificial granite product can be obtained.
Experimental example 1:
artificial granite products were produced as described in examples 1 to 5 and comparative example 1, using an artificial granite aggregate of the same composition comprising calcium carbonate powder, 20 mesh white crystal sand, 40 mesh white crystal sand, 60 mesh white crystal sand, 80 mesh white crystal sand, unsaturated polyester resin and curing agent; 6000g of artificial granite products are also produced, the total consumption of unsaturated polyester resin is counted, and the compression strength and the bending strength of the artificial granite products are detected according to the method described in the national standard GB/T35157-2017 resin type synthetic stone plate, and the specific results are shown in Table 1.
TABLE 1 Performance test results for Artificial granite products
The data show that the performances of the artificial granite products obtained by adopting the pretreatment method disclosed by the invention are far beyond the requirements of national standard GB/T35157-2017 resin type synthetic stone plate, such as compressive strength, bending strength and the like, and the performances of the artificial granite products are slightly better than those of the artificial granite products obtained without pretreatment, but the total consumption of unsaturated polyester resin is greatly reduced, the consumption of high-value resin is reduced, and the cost can be obviously reduced.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A pretreating agent for artificial granite raw materials is characterized in that: the paint comprises the following components in parts by mass: 1-5 parts of activating agent and 0.5-3 parts of cross-linking agent; the activating agent comprises the following components in parts by mass: 45-60 parts of styrene, 5-15 parts of silane coupling agent, 5-10 parts of chelating titanate, 5-10 parts of acrylamide and 5-15 parts of unsaturated polyester resin; the cross-linking agent comprises the following components in parts by mass: 60 to 90.995 portions of styrene, 5 to 35 portions of unsaturated polyester resin and 0.1 to 0.5 portion of azodiisobutyronitrile.
2. The pretreatment agent for artificial granite raw material as set forth in claim 1, characterized in that: the silane coupling agent is any one of a silane coupling agent KH550, a silane coupling agent KH570 and a silane coupling agent KH590.
3. A pretreatment method of artificial granite raw materials is characterized in that: the pretreatment of artificial granite aggregates with the pretreatment agent according to claim 1 or 2, comprising in particular the steps of:
(1) Quantitatively weighing styrene, a silane coupling agent, chelate titanate, acrylamide and unsaturated polyester resin, and uniformly mixing to obtain an activating agent for later use; quantitatively weighing styrene, unsaturated polyester resin and azodiisobutyronitrile, and uniformly mixing to obtain a cross-linking agent for later use;
(2) Weighing the following raw materials in parts by weight: 100 parts of artificial granite aggregate, 1-5 parts of activating agent and 0.5-3 parts of cross-linking agent; adding an activating agent into the artificial granite aggregate at one time, fully stirring for 15-30 min, then slowly adding a cross-linking agent into the artificial granite aggregate, fully stirring for 15-30 min, then uniformly mixing the artificial granite aggregate, unsaturated polyester resin and a curing agent, then sending the mixture to a press for pressing, curing the pressed artificial granite, and obtaining an artificial granite product after complete forming.
4. A process for the pretreatment of artificial granite materials according to claim 3, characterized in that: the pretreatment method of the artificial granite raw material is characterized by comprising the following steps: in the step (2), the activating agent is added into the artificial granite aggregate at one time and is fully stirred for 15-30 min under the condition that the stirring speed is 80-150 r/min.
5. A process for the pretreatment of artificial granite materials according to claim 3, characterized in that: in the step (2), the cross-linking agent is slowly added into the artificial granite aggregate and fully stirred for 15-30 min under the condition that the stirring speed is 50-100 r/min.
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| CN115626791B (en) * | 2022-11-02 | 2023-06-09 | 陕西安东兴阳岗石科技有限公司 | Nano calcium enhanced additive, resin and artificial granite |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104446143A (en) * | 2014-11-19 | 2015-03-25 | 广西利升石业有限公司 | Preparation method of artificial stone from colored glass particles |
| CN112430001A (en) * | 2020-11-27 | 2021-03-02 | 四川大学 | Artificial granite waste residue based cement mortar reinforcing agent and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104446143A (en) * | 2014-11-19 | 2015-03-25 | 广西利升石业有限公司 | Preparation method of artificial stone from colored glass particles |
| CN112430001A (en) * | 2020-11-27 | 2021-03-02 | 四川大学 | Artificial granite waste residue based cement mortar reinforcing agent and preparation method thereof |
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