CN110746924A - Temperature-resistant water-based glue for polyurethane light conveyor belt - Google Patents
Temperature-resistant water-based glue for polyurethane light conveyor belt Download PDFInfo
- Publication number
- CN110746924A CN110746924A CN201911058790.8A CN201911058790A CN110746924A CN 110746924 A CN110746924 A CN 110746924A CN 201911058790 A CN201911058790 A CN 201911058790A CN 110746924 A CN110746924 A CN 110746924A
- Authority
- CN
- China
- Prior art keywords
- water
- temperature
- nano
- glue
- cellulose
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/30—Belts or like endless load-carriers
- B65G15/32—Belts or like endless load-carriers made of rubber or plastics
-
- 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
- C09J11/08—Macromolecular additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- 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
- C08L2205/04—Polymer mixtures characterised by other features containing interpenetrating networks
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention belongs to the field of conveyor belts in the food industry, and discloses temperature-resistant water-based glue for a polyurethane light conveyor belt, which is prepared from the following components in parts by mass: 18-22: 50-70 parts of nano-cellulose, water-based polyurethane glue and water; dissolving nano-cellulose in water, stirring and mixing at a high speed of 800-1200 r/min for 5-15 min, then adding the mixture into water-based polyurethane glue according to the proportion, and stirring and mixing at a low speed of 100-150 r/min for 20-40 min. The polyurethane light conveyor belt consists of a fabric layer, a bonding layer and a surface layer, wherein the bonding layer contains the temperature-resistant water-based glue, and a dual interpenetrating network structure is formed by infrared heating and curing. The temperature-resistant water-based glue disclosed by the invention has good temperature resistance and water solubility, can still ensure the bonding strength at high temperature, greatly prolongs the service life of a conveying belt in the process of conveying high-temperature objects, does not use an organic solvent in the processing process, is safe and environment-friendly, and meets the requirement of food grade.
Description
Technical Field
The invention belongs to the technical field of conveyor belts in the food industry, relates to temperature-resistant water-based polyurethane glue, and particularly relates to temperature-resistant water-based glue for a polyurethane light conveyor belt.
Background
With the vigorous development of the food processing industry, higher requirements are put forward on the conveying belt which is an important device of the production line. The polyurethane light conveyer belt generally uses polyester fabric as a framework material and is mainly used for conveying light and medium-quality articles, and the polyurethane light conveyer belt is widely used in the industries of food baking and the like due to the advantages of light weight, long service life, convenience in installation, difficulty in friction and the like. Baked food generally has certain temperature after being taken out of the oven, but the temperature performance of the conventional polyurethane conveying belt is poor, and the conveying belt is aged by high-temperature objects, so that the polyurethane and a polyurethane framework are separated and cracked, and the use of the conveying belt is adversely affected.
At present, the conventional method for solving the problems is to use temperature-resistant glue instead of polyurethane glue as a bonding material of polyurethane and polyester fabric, but even the temperature-resistant glue is aged and degraded in the use process, and the temperature resistance of the conveyer belt cannot be fundamentally improved. Therefore, the polyurethane food conveying belt has a temperature-resistant function on the basis of meeting the physical and mechanical properties of the polyurethane food conveying belt, and has very important practical value.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide the temperature-resistant water-based glue for the polyurethane light conveyor belt, the porous hollow material nano-cellulose with good temperature resistance and water solubility is compounded with the water-based polyurethane glue, a layer of nano-cellulose network is added on the basis of the water-based polyurethane glue network structure to form a dual interpenetrating network structure, and even if the water-based polyurethane glue is aged at high temperature, the nano-cellulose can still ensure the strength of a bonding material, so that the service life of the conveyor belt in the process of transporting high-temperature objects is greatly prolonged.
The purpose of the invention can be realized by the following technical scheme:
the temperature-resistant water-based glue for the polyurethane light conveyor belt is prepared from the following components in percentage by mass of 1: 18-22: 50-70 parts of nano cellulose, water-based polyurethane glue and water, wherein the preparation method comprises the following steps:
dissolving the nano-cellulose in water, and stirring and mixing at a high speed for 5-15 min under the condition of 800-1200 r/min to obtain a nano-cellulose aqueous solution; and adding the nano-cellulose aqueous solution into the aqueous polyurethane glue according to the proportion, and stirring and mixing at a low speed for 20-40 min under the condition of 100-150 r/min to obtain the nano-cellulose adhesive.
In one embodiment, the temperature-resistant water-based glue is prepared from the following components in a mass ratio of 1: 20: 60 of nano-cellulose, aqueous polyurethane glue and water.
In one embodiment, the preparation method of the temperature-resistant water-based glue comprises the following steps: dissolving the nano-cellulose in water, and stirring and mixing at a high speed for 10min under the condition of 1000r/min to obtain a nano-cellulose aqueous solution; and then adding the nano cellulose aqueous solution into the aqueous polyurethane glue according to the proportion, and stirring and mixing at a low speed for 30min under the condition of 120r/min to obtain the nano cellulose adhesive.
The polyurethane light conveyer belt consists of a fabric layer, a bonding layer and a surface layer, wherein:
the bonding layer comprises the temperature-resistant water-based glue and a curing agent, wherein the mass ratio of the temperature-resistant water-based glue to the curing agent is 20-40: 1;
the preparation method of the bonding layer comprises the following steps: mixing the temperature-resistant water-based glue and the curing agent in proportion, and uniformly coating the mixture on the surface of the fabric layer, wherein the coating amount is 100-120 g/m2And then carrying out curing reaction by infrared heating at 105-115 ℃ to form a dual interpenetrating network structure.
In one embodiment, the curing agent is an aliphatic isocyanate.
Compared with the prior art, the invention has the beneficial effects that:
1. the temperature-resistant water-based glue disclosed by the invention contains water-soluble material nanocellulose and water-based polyurethane glue, does not use an organic solvent in the processing process, is safe and environment-friendly, meets the food-grade requirement, and can be used in the food industry.
2. The nano-cellulose is added into the bonding layer of the polyurethane light conveyor belt, does not contact with food on the surface of the conveyor belt, does not influence the safety performance of the food, and can effectively improve the bonding strength of the surface layer of the conveyor belt and the terylene fabric layer at high temperature.
Detailed Description
The technical solutions of the present invention are described in detail below by way of examples, but the scope of the present invention is not limited to the following examples.
The raw materials nanocellulose and aqueous polyurethane glue used in the following examples are both commercially available.
The heat-resistant water-based glue is prepared from the following components in percentage by mass of 1: 18-22: 50-70 parts of nano-cellulose, water-based polyurethane glue and water. The preparation method comprises the following steps: dissolving nano-cellulose in water, and stirring and mixing at a high speed for 10min under the condition of 1000r/min to obtain a nano-cellulose aqueous solution; and adding the nano-cellulose aqueous solution into aqueous polyurethane glue according to the proportion, and stirring and mixing at a low speed for 30min under the condition of 120r/min to obtain the nano-cellulose aqueous solution.
The polyurethane light-duty conveyer belt comprises fabric layer, tie coat and surface course, and the tie coat contains above-mentioned temperature resistant water-based glue, still includes the curing agent, and the quality ratio of temperature resistant water-based glue and curing agent is 20 ~ 40: 1. the preparation method of the bonding layer comprises the following steps: mixing temperature-resistant water-based glue and a curing agent in proportion, and uniformly coating the mixture on the surface of a fabric layer, wherein the coating amount is 100-120 g/m2And then carrying out curing reaction by infrared heating at 105-115 ℃ to form a dual interpenetrating network structure.
Example 1
The heat-resistant water-based glue is prepared from the following components in percentage by mass of 1: 20: 60 of nano-cellulose, water-based polyurethane glue and water, wherein the temperature-resistant water-based glue and the curing agent aliphatic isocyanate are mixed according to the mass ratio of 20: 1 after mixing, the coating weight is 100g/m2And uniformly coating the surface of the fabric layer to obtain the bonding layer of the polyurethane light conveyor belt by the preparation method.
Comparative example 1
Mixing the waterborne polyurethane glue and curing agent aliphatic isocyanate according to the mass ratio of 20: 1 after mixing, the coating weight is 100g/m2The bonding layer was uniformly coated on the surface of the fabric layer, and the polyurethane light weight conveyor belt was obtained by the same preparation method as in example 1.
The bonding peel strength (MPa) tests were performed on the polyurethane light-weight conveyor belt bonding layer formed by the temperature-resistant aqueous glue prepared in example 1 and the polyurethane light-weight conveyor belt bonding layer formed by the aqueous polyurethane glue in comparative example 1 at 25 ℃ and 80 ℃ respectively according to GB/T23677-2009 light-weight conveyor belt, and the results are shown in table 1.
Table 1: bonding peel strength (MPa) of polyurethane light conveyor belt bonding layer at high temperature
| Comparative example 1 | Example 1 | |
| 25℃ | 26 | 28 |
| 80℃ | 7.8 | 24 |
The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and the present invention should not be limited by the disclosure of the preferred embodiments. Therefore, it is intended that all equivalents and modifications which do not depart from the spirit of the invention disclosed herein are deemed to be within the scope of the invention.
Claims (5)
1. A temperature resistant waterborne glue for light-duty conveyer belt of polyurethane, its characterized in that is by the mass ratio 1: 18-22: 50-70 parts of nano cellulose, water-based polyurethane glue and water, wherein the preparation method comprises the following steps:
dissolving the nano-cellulose in water, and stirring and mixing at a high speed for 5-15 min under the condition of 800-1200 r/min to obtain a nano-cellulose aqueous solution; and adding the nano-cellulose aqueous solution into the aqueous polyurethane glue according to the proportion, and stirring and mixing at a low speed for 20-40 min under the condition of 100-150 r/min to obtain the nano-cellulose adhesive.
2. The temperature-resistant water-based glue according to claim 1, wherein the mass ratio of the temperature-resistant water-based glue to the water-based glue is 1: 20: 60 of nano-cellulose, aqueous polyurethane glue and water.
3. The temperature-resistant water-based glue according to claim 1 or 2, characterized in that the preparation method of the temperature-resistant water-based glue is as follows: dissolving the nano-cellulose in water, and stirring and mixing at a high speed for 10min under the condition of 1000r/min to obtain a nano-cellulose aqueous solution; and then adding the nano cellulose aqueous solution into the aqueous polyurethane glue according to the proportion, and stirring and mixing at a low speed for 30min under the condition of 120r/min to obtain the nano cellulose adhesive.
4. Light-duty conveyer belt of polyurethane, its characterized in that, the conveyer belt comprises fabric layer, tie coat and surface course, wherein:
the bonding layer comprises the temperature-resistant water-based glue of any one of claims 1-3 and further comprises a curing agent, and the mass ratio of the temperature-resistant water-based glue to the curing agent is 20-40: 1;
the preparation method of the bonding layer comprises the following steps: mixing the temperature-resistant water-based glue and the curing agent in proportion, and uniformly coating the mixture on the surface of the fabric layer, wherein the coating amount is 100-120 g/m2And then carrying out curing reaction by infrared heating at 105-115 ℃ to form a dual interpenetrating network structure.
5. The polyurethane light weight conveyor belt of claim 4, wherein the curing agent is an aliphatic isocyanate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911058790.8A CN110746924A (en) | 2019-11-01 | 2019-11-01 | Temperature-resistant water-based glue for polyurethane light conveyor belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911058790.8A CN110746924A (en) | 2019-11-01 | 2019-11-01 | Temperature-resistant water-based glue for polyurethane light conveyor belt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110746924A true CN110746924A (en) | 2020-02-04 |
Family
ID=69281751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911058790.8A Pending CN110746924A (en) | 2019-11-01 | 2019-11-01 | Temperature-resistant water-based glue for polyurethane light conveyor belt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110746924A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107987777A (en) * | 2017-12-05 | 2018-05-04 | 南京工程学院 | A kind of polyaminoester emulsion adhesive of the whisker containing nano-cellulose and preparation method thereof |
| CN109230212A (en) * | 2018-09-10 | 2019-01-18 | 上海永利输送系统有限公司 | Heatproof TPU light-type conveyer belt and its manufacturing method |
-
2019
- 2019-11-01 CN CN201911058790.8A patent/CN110746924A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107987777A (en) * | 2017-12-05 | 2018-05-04 | 南京工程学院 | A kind of polyaminoester emulsion adhesive of the whisker containing nano-cellulose and preparation method thereof |
| CN109230212A (en) * | 2018-09-10 | 2019-01-18 | 上海永利输送系统有限公司 | Heatproof TPU light-type conveyer belt and its manufacturing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104327787B (en) | A kind of carton processing adhesive | |
| CN109504343B (en) | Formaldehyde-free bean gum and preparation method thereof | |
| WO2010104286A3 (en) | Method for manufacturing a rice hull board, and rice hull board manufactured by same | |
| CN104313880B (en) | Heat-resistant dipping treatment liquid for polyester canvas and preparation method and application thereof | |
| CN109337350B (en) | Temperature-resistant TPU film for automotive interior and preparation method thereof | |
| CN110746924A (en) | Temperature-resistant water-based glue for polyurethane light conveyor belt | |
| CN111269670B (en) | Preparation method of modified starch adhesive | |
| CN102617797B (en) | Preparation method of nano grafting starch | |
| CN102702397B (en) | Polyvinyl butyral with high impact resistance, synthetic method and application thereof | |
| CN102276906B (en) | Modified ethane-vinyl alcohol copolymer composite material and preparation technology thereof | |
| CN109385228B (en) | Low-temperature corrugated paper glue | |
| CN109230212B (en) | Temperature-resistant TPU light conveyor belt and manufacturing method thereof | |
| CN111040667A (en) | Dopamine-functionalized starch adhesive and preparation method thereof | |
| CN104910822A (en) | High-toughness polyvinyl butyral film and preparation method thereof | |
| CN107513219A (en) | A kind of preparation method of easy dyeing plastic master batch | |
| CN111286286B (en) | Preparation method of water-resistant starch adhesive | |
| CN111139001B (en) | Antibacterial starch adhesive and preparation method thereof | |
| CN111087945A (en) | Starch adhesive with antibacterial function and preparation method thereof | |
| CN106590469A (en) | Water-resisting soybean meal adhesive and preparation method thereof | |
| CN113563826A (en) | Adhesive additive for artificial board and preparation method thereof | |
| CN112900141A (en) | Water transfer paper for improving transfer efficiency of sand blasting stained paper and production process thereof | |
| CN103192560A (en) | Food and medicine conveyor belt and making method thereof | |
| CN113072771B (en) | Light conveying belt and preparation method thereof | |
| CN108867072B (en) | Gum dipping liquid for industrial canvas and preparation process thereof | |
| CN115850893A (en) | Flame-retardant heat-resistant conveying belt and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200204 |