CN109181629B - Carton adhesive containing calcium carbonate whiskers and preparation method thereof - Google Patents
Carton adhesive containing calcium carbonate whiskers and preparation method thereof Download PDFInfo
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- CN109181629B CN109181629B CN201810783231.2A CN201810783231A CN109181629B CN 109181629 B CN109181629 B CN 109181629B CN 201810783231 A CN201810783231 A CN 201810783231A CN 109181629 B CN109181629 B CN 109181629B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J189/00—Adhesives based on proteins; Adhesives based on derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a carton adhesive containing calcium carbonate whiskers and a preparation method thereof, and the prepared carton adhesive has higher adhesive strength and excellent water resistance, and meanwhile, the production cost is low and the process is simple; the straw stalks are sprayed with alkali liquor and then subjected to steam explosion treatment, so that the bulkiness and the dispersity of the straw stalks are improved, and the toughness of the straw stalks is increased, so that the bonding strength of the adhesive is improved; the rigid calcium carbonate whiskers are combined with the flexible straw stalks, and the bonding strength of the adhesive is obviously enhanced under the synergistic effect; the nano silicon dioxide is loaded on the surface of the calcium carbonate whisker, so that the strength of the calcium carbonate whisker is enhanced, the bonding strength is further improved, and the water resistance of the adhesive is improved to ensure that the water resistance is excellent.
Description
Technical Field
The invention belongs to the technical field of carton adhesive glue, and particularly relates to a carton adhesive glue containing calcium carbonate whiskers and a preparation method thereof.
Background
Corrugated paper board occupies an extremely important position in the whole packaging paper container material, because corrugated paper box not only has changeable shape, is suitable for automatic high-speed production, has good appearance display effect, but also can effectively protect commodities, has low price, is easy to recycle, can not cause pollution to the environment, and is an environment-friendly packaging material. In China, almost all corrugated board production currently adopts starch adhesives, although the starch adhesives have the advantages of wide sources, rich resources, no toxicity, no pollution, low cost and the like, the starch adhesives are greatly affected by temperature and composition, have unstable performance and are easy to thin in the recycling process, and the produced corrugated boards are easy to get damp and soften to cause the reduction of the adhesive strength of the corrugated boards and poor in water resistance.
Disclosure of Invention
Aiming at the problems, the invention aims to provide a carton adhesive with high adhesive strength and good water resistance and a preparation method thereof.
The invention is realized by the following technical scheme:
the carton adhesive glue containing the calcium carbonate whiskers is characterized by being prepared from the following raw materials in parts by weight:
5-10 parts of straw stalk, 10-20 parts of polyvinyl alcohol solution, 4-8 parts of calcium carbonate whisker, 20-40 parts of sodium silicate aqueous solution, 30-60 parts of ethanol solution of silane coupling agent, 20-25 parts of VAE resin emulsion, 40-60 parts of soybean protein powder, 20-30 parts of glutinous rice flour, 5-10 parts of carboxymethyl cellulose and 3-8 parts of dilute hydrochloric acid solution;
the solid content of the VAE resin emulsion is 30-40%.
Further, the preparation method comprises the following steps:
(1) cutting straw stalks into small segments of 1-2cm, placing the small segments in a stirrer, spraying 4-6% of polyvinyl alcohol solution into the small segments while stirring at the rotating speed of 200-80 rpm, placing the small segments in a steam explosion tank when the water content is 35-45%, introducing steam until the pressure is 1.2-1.3MPa, keeping the pressure for 3-5min, then quickly discharging the material through a valve, drying the obtained material in a vacuum drying oven at the temperature of 70-80 ℃ until the water content is 5-8%, and crushing the material until the particle size is 50-500 mu m;
(2) modifying the calcium carbonate crystal whisker by using a sodium silicate aqueous solution to obtain modified calcium carbonate crystal whisker;
(3) adding the calcium carbonate whiskers coated with the silicon dioxide obtained in the step (2) into an ethanol solution of a silane coupling agent, treating for 1-3min by using microwaves, cooling, adding the straw stalks obtained in the step (1), stirring for 20-30min at 800rpm, adding VAE resin emulsion, transferring into a reaction kettle, reacting for 10-12h at 70-75 ℃, cooling, filtering and drying at 120 ℃ of 100-.
(4) Adding the soybean protein powder into a sodium hydroxide solution with the volume of 3-6% which is 10-20 times of the volume of the soybean protein powder, stirring at 1000rpm for complete dispersion, adding the glutinous rice powder and the carboxymethyl cellulose, heating to 90-95 ℃, continuing stirring for 2-3h, then adding the product obtained in the step (3), and stirring for 1-2 h.
Further, the preparation method of the modified calcium carbonate whisker in the step (2) comprises the following steps:
adding calcium carbonate whiskers into distilled water with the volume 20-30 times of that of the calcium carbonate whiskers, carrying out ultrasonic treatment at 40-50 ℃ for 40-50min, then adding a sodium silicate aqueous solution, heating to 70-80 ℃, slowly adding 5-10% of a dilute hydrochloric acid solution under stirring at the rotation speed of 300-400rpm, continuously stirring for reaction for 30-60min, standing for 5-8h, and carrying out spray drying to obtain the calcium carbonate whiskers coated with the nano-silica.
Further, the microwave treatment condition in the step (3) is 800-.
Further, the mass concentration of the ethanol solution of the silane coupling agent in the step (3) is 3-7%, and the silane coupling agent is KH-550 and KH-570.
Further, the mass concentration of the sodium silicate aqueous solution is 40-44%.
The invention has the beneficial effects that: the carton adhesive prepared by the invention has higher adhesive strength and excellent water resistance, and meanwhile, the production cost is low and the process is simple; the straw stalks are sprayed with alkali liquor and then subjected to steam explosion treatment, so that the bulkiness and the dispersity of the straw stalks are improved, and the toughness of the straw stalks is increased, so that the bonding strength of the adhesive is improved; the rigid calcium carbonate whiskers are combined with the flexible straw stalks, and the bonding strength of the adhesive is obviously enhanced under the synergistic effect; the nano silicon dioxide is loaded on the surface of the calcium carbonate whisker, so that the strength of the calcium carbonate whisker is enhanced, the bonding strength is further improved, and the water resistance of the adhesive is improved to ensure that the water resistance is excellent.
Detailed Description
The invention is illustrated by the following specific examples, which are not intended to be limiting.
Example 1
The carton adhesive glue containing the calcium carbonate whiskers is characterized by being prepared from the following raw materials in parts by weight:
5 parts of straw stalks, 10 parts of polyvinyl alcohol solution, 4 parts of calcium carbonate whiskers, 20 parts of sodium silicate aqueous solution, 30 parts of ethanol solution of silane coupling agent, 20 parts of VAE resin emulsion, 40 parts of soybean protein powder, 20 parts of glutinous rice flour, 5 parts of carboxymethyl cellulose and 3 parts of dilute hydrochloric acid solution;
the VAE resin emulsion has a solid content of 30%.
Further, the preparation method comprises the following steps:
(1) cutting straw stalks into segments of 1cm, placing in a stirrer, spraying 4% polyvinyl alcohol solution into the stirrer while stirring at the rotation speed of 200rpm, placing in a steam explosion tank when the water content is 35%, introducing steam until the pressure is 1.2MPa, keeping for 3min, rapidly discharging through a valve, drying the obtained material in a vacuum drying oven at 70 ℃ until the water content is 5%, and crushing to the particle size of 50 μm;
(2) modifying the calcium carbonate crystal whisker by using a sodium silicate aqueous solution to obtain modified calcium carbonate crystal whisker;
(3) adding the calcium carbonate whiskers coated with the silicon dioxide and obtained in the step (2) into an ethanol solution of a silane coupling agent, treating for 1min by using microwaves, cooling, adding the straw stalks obtained in the step (1), stirring for 20min at 600rpm, adding VAE resin emulsion, transferring into a reaction kettle, reacting for 10h at 70 ℃, cooling, filtering and drying at 100 ℃.
(4) Adding the soybean protein powder into a 3% sodium hydroxide solution with the volume 10 times of the soybean protein powder, stirring at 500rpm until the soybean protein powder is completely dispersed, adding the glutinous rice flour and the carboxymethyl cellulose, heating to 90 ℃, continuing stirring for 2 hours, then adding the product obtained in the step (3), and stirring for 1 hour.
Further, the preparation method of the modified calcium carbonate whisker in the step (2) comprises the following steps:
adding calcium carbonate whiskers into distilled water with the volume 20 times of that of the calcium carbonate whiskers, carrying out ultrasonic treatment at 40 ℃ for 40min, then adding a sodium silicate aqueous solution, heating to 70 ℃, slowly adding a 5% dilute hydrochloric acid solution under stirring at the rotating speed of 300rpm, continuously stirring for reaction for 30min, standing for 5h, and carrying out spray drying to obtain the calcium carbonate whiskers coated with the nano silicon dioxide.
Further, the microwave treatment condition in the step (3) is 800W.
Further, the mass concentration of the ethanol solution of the silane coupling agent in the step (3) is 3%, and the silane coupling agent is KH-550 and KH-570.
Further, the mass concentration of the sodium silicate aqueous solution is 40%.
Example 2
The carton adhesive glue containing the calcium carbonate whiskers is characterized by being prepared from the following raw materials in parts by weight:
straw 7, polyvinyl alcohol solution 15, calcium carbonate whisker 5, sodium silicate aqueous solution 30, ethanol solution 40 of silane coupling agent, VAE resin emulsion 22, soybean protein powder 50, glutinous rice flour 25, carboxymethyl cellulose 8 and dilute hydrochloric acid solution 5;
the VAE resin emulsion has a solid content of 35%.
Further, the preparation method comprises the following steps:
(1) cutting straw stalks into 2cm segments, placing the segments in a stirrer, spraying 5% polyvinyl alcohol solution into the segments while stirring at the rotating speed of 250rpm, placing the segments in a steam explosion tank when the water content is 40%, introducing steam until the pressure is 1.3MPa, keeping the pressure for 4min, quickly discharging the materials by releasing a valve, drying the obtained materials in a vacuum drying oven at the temperature of 75 ℃ until the water content is 6%, and crushing the materials to the particle size of 100 mu m;
(2) modifying the calcium carbonate crystal whisker by using a sodium silicate aqueous solution to obtain modified calcium carbonate crystal whisker;
(3) adding the calcium carbonate whiskers coated with the silicon dioxide and obtained in the step (2) into an ethanol solution of a silane coupling agent, treating for 2min by using microwaves, cooling, adding the straw stalks obtained in the step (1), stirring for 25min at 700rpm, adding VAE resin emulsion, transferring into a reaction kettle, reacting for 11h at 72 ℃, cooling, filtering and drying at 110 ℃.
(4) Adding the soybean protein powder into a 4% sodium hydroxide solution 15 times the volume of the soybean protein powder, stirring at 700rpm until the soybean protein powder is completely dispersed, adding the glutinous rice flour and the carboxymethyl cellulose, heating to 92 ℃, continuing stirring for 3 hours, then adding the product obtained in the step (3), and stirring for 2 hours.
Further, the preparation method of the modified calcium carbonate whisker in the step (2) comprises the following steps:
adding calcium carbonate whiskers into distilled water with the volume being 25 times that of the calcium carbonate whiskers, carrying out ultrasonic treatment at 45 ℃ for 45min, then adding a sodium silicate aqueous solution, heating to 75 ℃, slowly adding a 6% dilute hydrochloric acid solution under stirring at the rotating speed of 350rpm, continuously stirring for reaction for 50min, standing for 7h, and carrying out spray drying to obtain the calcium carbonate whiskers coated with the nano silicon dioxide.
Further, the microwave treatment condition in the step (3) is 900W.
Further, the mass concentration of the ethanol solution of the silane coupling agent in the step (3) is 6%, and the silane coupling agent is KH-550 and KH-570.
Further, the mass concentration of the sodium silicate aqueous solution is 42%.
Example 3
The carton adhesive glue containing the calcium carbonate whiskers is characterized by being prepared from the following raw materials in parts by weight:
10 parts of straw stalks, 20 parts of polyvinyl alcohol solution, 8 parts of calcium carbonate whiskers, 40 parts of sodium silicate aqueous solution, 60 parts of ethanol solution of silane coupling agent, 25 parts of VAE resin emulsion, 60 parts of soybean protein powder, 30 parts of glutinous rice flour, 10 parts of carboxymethyl cellulose and 8 parts of dilute hydrochloric acid solution;
the VAE resin emulsion has a solid content of 40%.
Further, the preparation method comprises the following steps:
(1) cutting straw stalks into 2cm segments, placing the segments in a stirrer, spraying 6% polyvinyl alcohol solution into the segments while stirring at the rotating speed of 300rpm, placing the segments in a steam explosion tank when the water content is 45%, introducing steam until the pressure is 1.3MPa, keeping the pressure for 5min, quickly discharging the materials by releasing a valve, drying the obtained materials in a vacuum drying oven at the temperature of 80 ℃ until the water content is 8%, and crushing the materials to the particle size of 500 mu m;
(2) modifying the calcium carbonate crystal whisker by using a sodium silicate aqueous solution to obtain modified calcium carbonate crystal whisker;
(3) adding the calcium carbonate whiskers coated with the silicon dioxide and obtained in the step (2) into an ethanol solution of a silane coupling agent, treating for 3min by using microwaves, cooling, adding the straw stalks obtained in the step (1), stirring for 30min at 800rpm, adding VAE resin emulsion, transferring into a reaction kettle, reacting for 12h at 75 ℃, cooling, filtering and drying at 120 ℃.
(4) Adding the soybean protein powder into 6% sodium hydroxide solution with the volume 20 times of the soybean protein powder, stirring at 1000rpm until the soybean protein powder is completely dispersed, adding the glutinous rice flour and the carboxymethyl cellulose, heating to 95 ℃, continuing stirring for 3 hours, then adding the product obtained in the step (3), and stirring for 2 hours.
Further, the preparation method of the modified calcium carbonate whisker in the step (2) comprises the following steps:
adding calcium carbonate whiskers into distilled water with the volume 30 times of that of the calcium carbonate whiskers, carrying out ultrasonic treatment at 50 ℃ for 50min, then adding a sodium silicate aqueous solution, heating to 80 ℃, slowly adding a 10% dilute hydrochloric acid solution under stirring at the rotating speed of 400rpm, continuously stirring for reaction for 60min, standing for 8h, and carrying out spray drying to obtain the calcium carbonate whiskers coated with the nano silicon dioxide.
Further, the microwave treatment condition in the step (3) is 1000W.
Further, the mass concentration of the ethanol solution of the silane coupling agent in the step (3) is 7%, and the silane coupling agent is KH-550 and KH-570.
Further, the mass concentration of the sodium silicate aqueous solution is 44%.
Comparative example 1
The procedure of this comparative example was the same as that of example 1 except that the addition of calcium carbonate whiskers was omitted.
Comparative example 2
In this comparative example, the procedure of modifying calcium carbonate whiskers was omitted as compared with example 1, and the procedure was otherwise the same.
Comparative example 3
In comparison with example 1, the comparative example omits the steps of spraying alkali solution and steam explosion treatment of the straw stalk, and the method steps are the same except that.
Comparative example 4
In this comparative example, the steps of the method were the same as those in example 1 except that the addition of straw was omitted.
Experiment:
adhesive strength test: the adhesive glue obtained in each group is applied to glue application of corrugated boards, the glue application thickness is 2mm, and drying is carried out for 3min at the temperature of 90 ℃. And then detecting the adhesive strength of each group of corrugated boards according to the method in GB/T6548-2011.
And (3) testing water resistance: the corrugated board is put in water at 25 ℃, and the water resistance is expressed by the layering time.
The test results are shown in table 1:
TABLE 1
As can be seen from Table 1, the calcium carbonate whiskers and the straw stalks synergistically improve the adhesive strength of the adhesive, the modification and treatment of the calcium carbonate whiskers and the straw stalks also improve the adhesive strength to a certain extent, and the nano-silica modified calcium carbonate whiskers are utilized to obviously improve the water resistance of the adhesive.
Claims (1)
1. The carton adhesive glue containing the calcium carbonate whiskers is characterized by being prepared from the following raw materials in parts by weight:
5-10 parts of straw stalk, 10-20 parts of polyvinyl alcohol solution, 4-8 parts of calcium carbonate whisker, 20-40 parts of sodium silicate aqueous solution, 30-60 parts of ethanol solution of silane coupling agent, 20-25 parts of VAE resin emulsion, 40-60 parts of soybean protein powder, 20-30 parts of glutinous rice flour, 5-10 parts of carboxymethyl cellulose and 3-8 parts of dilute hydrochloric acid solution;
the solid content of the VAE resin emulsion is 30-40%;
the preparation method comprises the following steps:
(1) cutting straw stalks into small segments of 1-2cm, placing the small segments in a stirrer, spraying 4-6% of polyvinyl alcohol solution into the small segments while stirring at the rotating speed of 200-80 rpm, placing the small segments in a steam explosion tank when the water content is 35-45%, introducing steam until the pressure is 1.2-1.3MPa, keeping the pressure for 3-5min, then quickly discharging the material through a valve, drying the obtained material in a vacuum drying oven at the temperature of 70-80 ℃ until the water content is 5-8%, and crushing the material until the particle size is 50-500 mu m;
(2) modifying the calcium carbonate crystal whisker by using a sodium silicate aqueous solution to obtain modified calcium carbonate crystal whisker;
(3) adding the calcium carbonate whiskers coated with the silicon dioxide obtained in the step (2) into an ethanol solution of a silane coupling agent, treating for 1-3min by using microwaves, cooling, adding the straw stalks obtained in the step (1), stirring for 20-30min at 800rpm of 600-;
(4) adding the soybean protein powder into a sodium hydroxide solution which is 10-20 times of the volume of the soybean protein powder and is 3% -6%, stirring at the speed of 1000rpm for complete dispersion, adding the glutinous rice powder and the carboxymethyl cellulose, heating to 90-95 ℃, continuing stirring for 2-3h, then adding the product obtained in the step (3), and stirring for 1-2 h;
the preparation method of the modified calcium carbonate whisker in the step (2) comprises the following steps:
adding calcium carbonate whiskers into distilled water with the volume 20-30 times of that of the calcium carbonate whiskers, carrying out ultrasonic treatment at 40-50 ℃ for 40-50min, then adding a sodium silicate aqueous solution, heating to 70-80 ℃, slowly adding 5-10% of a dilute hydrochloric acid solution under stirring at the rotation speed of 300-400rpm, continuously stirring for reaction for 30-60min, standing for 5-8h, and carrying out spray drying to obtain the calcium carbonate whiskers coated with the nano silicon dioxide;
the microwave treatment condition in the step (3) is 800-1000W;
the mass concentration of the ethanol solution of the silane coupling agent in the step (3) is 3-7%, and the silane coupling agent is KH-550 and KH-570;
the mass concentration of the sodium silicate aqueous solution is 40-44%.
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| CN201810783231.2A CN109181629B (en) | 2018-07-17 | 2018-07-17 | Carton adhesive containing calcium carbonate whiskers and preparation method thereof |
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| CN109943262A (en) * | 2019-04-01 | 2019-06-28 | 太和县东恒纸箱包装有限公司 | A kind of carton production adhesive and preparation method |
| CN111759145A (en) * | 2019-04-02 | 2020-10-13 | 歌乐电磁(深圳)有限公司 | Reinforced paper straw |
| CN110078975A (en) * | 2019-05-22 | 2019-08-02 | 合肥天沃能源科技有限公司 | A kind of preparation process of agricultural crop straw regenerated plates |
| CN114573951A (en) * | 2022-04-04 | 2022-06-03 | 上海顺海精密机械有限公司 | Rapid curing epoxy resin system for glass fiber pultrusion frame and preparation method thereof |
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| US7625441B2 (en) * | 2005-02-09 | 2009-12-01 | Solae, Llc | Paper coating formulation having a reduced level of binder |
| CA2758339A1 (en) * | 2009-04-13 | 2010-10-21 | The University Of Vermont And State Agricultural College | Whey-protein environmentally friendly wood adhesives and methods of producing and using the same |
| CN106244099A (en) * | 2016-08-31 | 2016-12-21 | 安徽省阜阳沪千人造板制造有限公司 | A kind of composite board adhesive of white glue with vinyl calcium carbonate crystal whisker blending and modifying dry and wet shear strength |
| CN107513358A (en) * | 2017-08-25 | 2017-12-26 | 如皋市福通纺织化学品有限公司 | A kind of preparation method of adhesive |
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Effective date of registration: 20200526 Address after: 233000 No. 1866 Cao Shan Road, Anhui, Bengbu Patentee after: BENGBU College Address before: Anhui province Bengbu City Yuhui District 233000 Hing Road No. 1650 Patentee before: BENGBU AOTE CARTON MACHINERY Co.,Ltd. |