CN115287013A - Biomass TPU hot melt adhesive film and preparation method thereof - Google Patents
Biomass TPU hot melt adhesive film and preparation method thereof Download PDFInfo
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- CN115287013A CN115287013A CN202210900647.4A CN202210900647A CN115287013A CN 115287013 A CN115287013 A CN 115287013A CN 202210900647 A CN202210900647 A CN 202210900647A CN 115287013 A CN115287013 A CN 115287013A
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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
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/35—Heat-activated
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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
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/08—Polyurethanes from polyethers
-
- 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
- C09J7/00—Adhesives in the form of films or foils
- C09J7/10—Adhesives in the form of films or foils without carriers
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/304—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being heat-activatable, i.e. not tacky at temperatures inferior to 30°C
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention relates to the field of TPU (thermoplastic polyurethane) hot melt adhesive film materials, in particular to a biomass TPU hot melt adhesive film which comprises the following raw materials in parts by weight: 85-100 parts of TPU particles; 30-50 parts of biomass; 40-70 parts of hollow glass microspheres; 20-50 parts of a foaming agent; 4-10 parts of zinc oxide; 3-6 parts of a silane coupling agent. The hollow glass microsphere disclosed by the invention belongs to a novel light inorganic non-metallic material, is a hollow sphere, is filled with inert gases such as nitrogen or carbon dioxide, has the advantages of no toxicity, low density, low thermal conductivity, high filling amount, no stress, high concentration and the like, can reduce the cost by adding the hollow glass microsphere into TPU (thermoplastic polyurethane), plays a role in enhancing a biomass TPU material, is good in environmental protection performance, is beneficial to decomposition of a foaming agent by adding zinc oxide, and reduces the foaming temperature.
Description
Technical Field
The invention relates to the field of TPU (thermoplastic polyurethane) hot melt adhesive film materials, in particular to a biomass TPU hot melt adhesive film and a preparation method thereof.
Background
The TPU is named thermoplastic polyurethane elastomer rubber, is a high polymer material between rubber and plastic, HAs wide hardness range (60 HA-85 HD), wear resistance, oil resistance, transparency and good elasticity, is widely applied to the fields of daily necessities, sports goods, toys, decorative materials and the like, and is also the most ideal material for replacing PVC and PU. TPUs are largely divided into polyester and polyether types. Wherein, the polyester product has better heat resistance and chemical resistance, and is widely used for replacing PVC products. The polyethers have good low temperature resistance, hydrolysis resistance and mildew-proof antibacterial property, and are widely used on related products contacting with water.
At present, a large amount of additives are used in the TPU hot melt adhesive film, a large amount of harmful gas is generated in the production process, great harm is caused to the health of operators, and residual smell can be remained in the TPU hot melt adhesive film, so that the TPU hot melt adhesive film hardly meets the high-standard environmental protection requirement.
Disclosure of Invention
In order to solve the technical problems, the invention provides the biomass TPU hot melt adhesive film which is environment-friendly and has good comprehensive performance.
The invention also provides a preparation method of the biomass TPU hot melt adhesive film, and the process is simple and easy to control.
The invention adopts the following technical scheme:
a biomass TPU hot melt adhesive film comprises the following raw materials in parts by weight: 85-100 parts of TPU particles; 30-50 parts of biomass; 40-70 parts of hollow glass microspheres; 20-50 parts of a foaming agent; 4-10 parts of zinc oxide; 3-6 parts of a silane coupling agent.
The technical proposal is further improved that the TPU granules are polyether TPU granules, and the processing temperature is 160-230 ℃; the biomass is one or more of wood powder, bamboo powder, chitin, lignin and cellulose.
The technical proposal is further improved that the particle diameter of the hollow glass microsphere is 5 to 80 mu m, and the density is 0.6 to 0.9g/cm 3 。
The technical proposal is further improved in that the foaming agent is one of AC foaming agent and thermal expansion microballoon.
The technical proposal is further improved in that the silane coupling agent is a silane coupling agent KH550.
A preparation method of a biomass TPU hot melt adhesive film comprises the following steps:
s1, screening the hollow glass microspheres by adopting a 200-400-mesh screen, and drying the screened hollow glass microspheres in a vacuum drying oven to obtain dried hollow glass microspheres;
s2, adding the dried hollow glass microspheres into a NaOH aqueous solution, stirring, washing with distilled water for 4-7 times after stirring, then adding a silane coupling agent, heating to 75-90 ℃, refluxing for 0.5-1h, and washing with distilled water for 1-2 times to obtain pretreated hollow glass microspheres;
s3, drying the TPU particles and the biomass in an air blower oven, adding the biomass, the pretreated hollow glass microspheres, the foaming agent and the zinc oxide into the TPU, and preparing the pre-foamed TPU by a double-screw extruder at the temperature of 175-190 ℃;
s4, placing the pre-foamed TPU into a flat vulcanizing machine to prepare a TPU foam material;
s5, adding the TPU foam material into a casting machine for casting to obtain the hot melt adhesive film.
The technical scheme is further improved in that in the step S1, the temperature of the vacuum drying oven is 125-150 ℃, and the drying time is 1-2.5h.
The technical proposal is further improved in that in the step S3, the temperature of the blower oven is 120-130 ℃, and the drying time is 0.5-1.5h.
The technical scheme is further improved in that in the step S4, the temperature of the vulcanizing machine is 190-210 ℃, the preheating time is 8-15min, and the pressure maintaining time is 6-10min.
The technical proposal is further improved in that in the step S5, the casting temperature is 150-180 ℃.
The invention has the beneficial effects that:
the hollow glass microspheres belong to a novel light inorganic non-metallic material, are hollow spheres, are internally filled with inert gases such as nitrogen or carbon dioxide, have the advantages of no toxicity, low density, low thermal conductivity, high filling amount, no stress, high concentration and the like, can reduce the cost by adding the hollow glass microspheres into TPU, play a role in enhancing the biomass TPU material, have good environmental protection performance, and are beneficial to decomposition of a foaming agent and reduction of foaming temperature by adding zinc oxide; the biomass is added, so that the method is more environment-friendly, reduces carbon footprint and realizes the recycling of wastes.
Detailed Description
The present invention is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.
A biomass TPU hot melt adhesive film comprises the following raw materials in parts by weight: 85-100 parts of TPU particles; 30-50 parts of biomass; 40-70 parts of hollow glass microspheres; 20-50 parts of a foaming agent; 4-10 parts of zinc oxide; 3-6 parts of a silane coupling agent.
Further, the TPU granules are polyether TPU granules, and the processing temperature is 160-230 ℃; the biomass is one or more of wood powder, bamboo powder, chitin, lignin and cellulose.
Furthermore, the particle size of the hollow glass microsphere is 5-80 μm, and the density is 0.6-0.9g/cm 3 。
Further, the foaming agent is one of an AC foaming agent and thermal expansion microspheres. The thermal expansion microsphere has the advantages of excellent mechanical property, wide foaming temperature range, easy processing and the like.
Further, the silane coupling agent is a silane coupling agent KH550.
A preparation method of a biomass TPU hot melt adhesive film comprises the following steps:
s1, screening the hollow glass microspheres by adopting a 200-400-mesh screen, and drying the screened hollow glass microspheres in a vacuum drying oven to obtain dried hollow glass microspheres; the temperature of the vacuum drying oven is 125-150 ℃, and the drying time is 1-2.5h;
s2, adding the dried hollow glass microspheres into a NaOH aqueous solution, stirring, washing with distilled water for 4-7 times after stirring, then adding a silane coupling agent, heating to 75-90 ℃, refluxing for 0.5-1h, and washing with distilled water for 1-2 times to obtain pretreated hollow glass microspheres;
s3, drying the TPU particles and the biomass in an air blower oven, adding the biomass, the pretreated hollow glass microspheres, the foaming agent and the zinc oxide into the TPU, and preparing the pre-foamed TPU by a double-screw extruder at the temperature of 175-190 ℃; the temperature of the blower oven is 120-130 ℃, and the drying time is 0.5-1.5h;
s4, placing the pre-foamed TPU into a flat vulcanizing machine to prepare a TPU foam material; the temperature of the vulcanizing machine is 190-210 ℃, the preheating time is 8-15min, and the pressure maintaining time is 6-10min;
s5, adding the TPU foam material into a casting machine for casting to obtain a hot melt adhesive film; in the step S5, the casting temperature is 150-180 ℃.
Example 1
A biomass TPU hot melt adhesive film comprises the following raw materials in parts by weight: 85 parts of TPU particles; 30 parts of wood powder; 40 parts of hollow glass microspheres; 20 parts of foaming agent; 4 parts of zinc oxide; 3 parts of a silane coupling agent.
A preparation method of a biomass TPU hot melt adhesive film comprises the following steps:
s1, screening the hollow glass microspheres by adopting a 200-mesh screen, and drying the screened hollow glass microspheres in a vacuum drying oven to obtain dried hollow glass microspheres; the temperature of the vacuum drying oven is 125 ℃, and the drying time is 1h;
s2, adding the dried hollow glass microspheres into a NaOH aqueous solution, stirring, washing with distilled water for 4 times after stirring, then adding a silane coupling agent, heating to 75 ℃, refluxing for 0.5 hour, and washing with distilled water for 1 time to obtain pretreated hollow glass microspheres;
s3, drying the TPU particles and the wood powder in an air blower oven, adding the wood powder, the pretreated hollow glass microspheres, the foaming agent and the zinc oxide into the TPU, and preparing the pre-foamed TPU by a double-screw extruder at 175 ℃; the temperature of the blower oven is 120 ℃, and the drying time is 0.5h;
s4, placing the pre-foamed TPU into a flat vulcanizing machine to prepare a TPU foam material; the temperature of the vulcanizing machine is 190 ℃, the preheating time is 8min, and the pressure maintaining time is 6min;
s5, adding the TPU foam material into a casting machine for casting to obtain a hot melt adhesive film; in the S5 step, the casting temperature is 150 ℃.
Example 2
A biomass TPU hot melt adhesive film comprises the following raw materials in parts by weight: 90 parts of TPU particles; 35 parts of lignin; 80 parts of hollow glass microspheres; 35 parts of a foaming agent; 5 parts of zinc oxide; 3 parts of a silane coupling agent.
A preparation method of a biomass TPU hot melt adhesive film comprises the following steps:
s1, screening the hollow glass microspheres by using a 300-mesh screen, and drying the screened hollow glass microspheres in a vacuum drying oven to obtain dried hollow glass microspheres; the temperature of the vacuum drying oven is 130 ℃, and the drying time is 2 hours;
s2, adding the dried hollow glass microspheres into a NaOH aqueous solution, stirring, washing with distilled water for 5 times after stirring, then adding a silane coupling agent, heating to 80 ℃, refluxing for 1 hour, and washing with distilled water for 1 time to obtain pretreated hollow glass microspheres;
s3, drying the TPU particles and lignin in an air blower oven, adding the lignin, the pretreated hollow glass microspheres, the foaming agent and the zinc oxide into the TPU, and preparing the pre-foamed TPU by a double-screw extruder at 180 ℃; the temperature of the blower oven is 125 ℃, and the drying time is 1h;
s4, placing the pre-foamed TPU into a flat vulcanizing machine to prepare a TPU foam material; the temperature of the vulcanizing machine is 200 ℃, the preheating time is 10min, and the pressure maintaining time is 8min;
s5, adding the TPU foam material into a casting machine for casting to obtain a hot melt adhesive film; in the S5 step, the casting temperature was 160 ℃.
Example 3
A biomass TPU hot melt adhesive film comprises the following raw materials in parts by weight: 100 parts of TPU particles; 40 parts of bamboo powder; 70 parts of hollow glass microspheres; 50 parts of a foaming agent; 10 parts of zinc oxide; 6 parts of a silane coupling agent.
A preparation method of a biomass TPU hot melt adhesive film comprises the following steps:
s1, screening the hollow glass microspheres by adopting a 400-mesh screen, and drying the screened hollow glass microspheres in a vacuum drying oven to obtain dried hollow glass microspheres; the temperature of the vacuum drying oven is 150 ℃, and the drying time is 2 hours;
s2, adding the dried hollow glass microspheres into a NaOH aqueous solution, stirring, washing with distilled water for 6 times after stirring, then adding a silane coupling agent, heating to 90 ℃, refluxing for 0.5h, and washing with distilled water for 2 times to obtain pretreated hollow glass microspheres;
s3, drying the TPU particles and the bamboo powder in an air blower oven, adding the bamboo powder, the pretreated hollow glass microspheres, a foaming agent and zinc oxide into the TPU, and preparing the pre-foamed TPU by a double-screw extruder at 190 ℃; the temperature of the blower oven is 130 ℃, and the drying time is 0.5h;
s4, placing the pre-foamed TPU into a flat vulcanizing machine to prepare a TPU foam material; the temperature of the vulcanizing machine is 210 ℃, the preheating time is 8min, and the pressure maintaining time is 6min;
s5, adding the TPU foam material into a casting machine for casting to obtain a hot melt adhesive film; in the S5 step, the casting temperature is 180 ℃.
Comparative example 1
Comparative example 1 provides a common TPU hot melt adhesive film.
The examples 1 to 3 and comparative example 1 were each subjected to a performance test, and the test results are shown in table 1.
TABLE 1
The hollow glass microspheres belong to a novel light inorganic non-metallic material, are hollow spheres, are internally filled with inert gases such as nitrogen or carbon dioxide, have the advantages of no toxicity, low density, low thermal conductivity, high filling amount, no stress, high concentration and the like, can reduce the cost by adding the hollow glass microspheres into TPU, play a role in enhancing the biomass TPU material, have good environmental protection performance, and are beneficial to decomposition of a foaming agent and reduction of foaming temperature by adding zinc oxide; the biomass is added, so that the method is more environment-friendly, the carbon footprint is reduced, and the recycling of wastes is realized.
The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention should not be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are intended to be covered by the claims.
Claims (10)
1. The biomass TPU hot melt adhesive film is characterized by comprising the following raw materials in parts by weight: 85-100 parts of TPU particles; 30-50 parts of biomass; 40-70 parts of hollow glass microspheres; 20-50 parts of a foaming agent; 4-10 parts of zinc oxide; 3-6 parts of a silane coupling agent.
2. The biomass TPU hot melt adhesive film according to claim 1, wherein the TPU granules are polyether TPU granules, and the processing temperature is 160-230 ℃; the biomass is one or more of wood powder, bamboo powder, chitin, lignin and cellulose.
3. The biomass TPU hot melt adhesive film of claim 1, wherein the hollow glass microspheres have a particle size of 5-80 μm and a density of 0.6-0.9g/cm 3 。
4. The biomass TPU hot melt adhesive film of claim 1, wherein the foaming agent is one of an AC foaming agent and thermally expandable microspheres.
5. The biomass TPU hot melt adhesive film of claim 1, wherein the silane coupling agent is silane coupling agent KH550.
6. A preparation method of a biomass TPU hot melt adhesive film is characterized by comprising the following steps:
s1, screening the hollow glass microspheres by adopting a 200-400-mesh screen, and drying the screened hollow glass microspheres in a vacuum drying oven to obtain dried hollow glass microspheres;
s2, adding the dried hollow glass microspheres into a NaOH aqueous solution, stirring, washing with distilled water for 4-7 times after stirring, then adding a silane coupling agent, heating to 75-90 ℃, refluxing for 0.5-1h, and washing with distilled water for 1-2 times to obtain pretreated hollow glass microspheres;
s3, drying the TPU particles and the biomass in an air blower oven, adding the biomass, the pretreated hollow glass microspheres, the foaming agent and the zinc oxide into the TPU, and preparing the pre-foamed TPU by a double-screw extruder at the temperature of 175-190 ℃;
s4, placing the pre-foamed TPU into a flat vulcanizing machine to prepare a TPU foam material;
s5, adding the TPU foam material into a casting machine for casting to obtain the hot melt adhesive film.
7. The preparation method of the biomass TPU hot melt adhesive film according to claim 6, wherein in the step S1, the temperature of the vacuum drying oven is 125-150 ℃ and the drying time is 1-2.5h.
8. The preparation method of the biomass TPU hot melt adhesive film according to claim 6, wherein in the step S3, the temperature of the blower oven is 120-130 ℃, and the drying time is 0.5-1.5h.
9. The preparation method of the biomass TPU hot melt adhesive film according to claim 6, wherein in the step S4, the temperature of the vulcanizer is 190-210 ℃, the preheating time is 8-15min, and the pressure holding time is 6-10min.
10. The preparation method of the biomass TPU hot melt adhesive film according to claim 6, wherein in the step S5, the casting temperature is 150-180 ℃.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210900647.4A CN115287013A (en) | 2022-07-28 | 2022-07-28 | Biomass TPU hot melt adhesive film and preparation method thereof |
| PCT/CN2022/113705 WO2024021204A1 (en) | 2022-07-28 | 2022-08-19 | Biomass tpu hot melt adhesive film and preparation method therefor |
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| CN202210900647.4A CN115287013A (en) | 2022-07-28 | 2022-07-28 | Biomass TPU hot melt adhesive film and preparation method thereof |
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| CN115287013A true CN115287013A (en) | 2022-11-04 |
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| CN202210900647.4A Pending CN115287013A (en) | 2022-07-28 | 2022-07-28 | Biomass TPU hot melt adhesive film and preparation method thereof |
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| WO (1) | WO2024021204A1 (en) |
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| CN109468106A (en) * | 2018-11-12 | 2019-03-15 | 重庆迅昌汽车零部件有限公司 | A kind of preparation method for the hot melt adhesive that foams |
| CN113306104A (en) * | 2021-05-26 | 2021-08-27 | 东莞市隆祺实业有限公司 | Production method of environment-friendly hot melt adhesive port |
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| JP4653299B2 (en) * | 2000-11-29 | 2011-03-16 | 大倉工業株式会社 | Urethane hot melt film |
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| CN103059792B (en) * | 2012-12-25 | 2014-08-20 | 广州鹿山新材料股份有限公司 | Polyester elastomer hot melt adhesives and preparation method thereof for bonding polar polymers and metallic materials |
| CN103205210B (en) * | 2013-03-19 | 2015-04-01 | 江苏鹿山光伏科技有限公司 | High-temperature-resistant hot melt adhesive membrane for aluminum honeycomb boards, and preparation method thereof |
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- 2022-07-28 CN CN202210900647.4A patent/CN115287013A/en active Pending
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| CN109468106A (en) * | 2018-11-12 | 2019-03-15 | 重庆迅昌汽车零部件有限公司 | A kind of preparation method for the hot melt adhesive that foams |
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