A kind of biodegradable modified polylactic acid adhesive tape and preparation method thereof
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A polylactic acid and modification technology, applied in the field of modified polylactic acid tape and its preparation, can solve the problems of less degradable tapes and less product launches, and achieve the effects of stable heat resistance, improved related performance, and improved water resistance
Inactive Publication Date: 2019-07-23
SHENZHEN YILINGYI IND DESIGN
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Problems solved by technology
At this stage, domestic research and development on biodegradable adhesive tapes is less, and there are few more mature products on the market.
Method used
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Embodiment 1
[0036] Coating modification on the surface of the substrate layer [w (PBSA) = 10%, w (TPS) = 20%, w (nanocellulose) = 1% (all relative to the quality of PLA)] with a film thickness of 20 μm Acrylic pressure-sensitive adhesive, the amount of adhesive is 20g / m2, to obtain a film coated with adhesive.
[0037] In the modified acrylate pressure-sensitive adhesive, w(GH)=0.7%, w(KH-570)=0.2% (all relative to the total monomer mass);
[0038] The film tape coated with the adhesive was baked in an oven at 80°C for 4 minutes to obtain a completely degradable modified polylactic acid tape.
Embodiment 2
[0040] Coating modification on the surface of the substrate layer [w (PBSA) = 10%, w (TPS) = 10%, w (nanocellulose) = 1% (all relative to the quality of PLA)] with a film thickness of 20 μm Acrylic pressure-sensitive adhesive, the amount of adhesive is 40g / m2, to obtain a film coated with adhesive.
[0041] In the modified acrylate pressure-sensitive adhesive, w(GH)=0.7%, w(KH-570)=0.3% (all relative to the total monomer mass);
[0042] The film tape coated with the adhesive was baked in an oven at 80°C for 4 minutes to obtain a completely degradable modified polylactic acid tape.
Embodiment 3
[0044] Coating modification on the surface of the substrate layer [w (PBSA) = 20%, w (TPS) = 20%, w (nanocellulose) = 2% (all relative to the quality of PLA)] with a film thickness of 20 μm Acrylic pressure-sensitive adhesive, the amount of adhesive is 20g / m2, to obtain a film coated with adhesive.
[0045] In the modified acrylate pressure-sensitive adhesive, w(GH)=0.7%, w(KH-570)=0.3% (all relative to the total monomer mass);
[0046] The film tape coated with the adhesive was baked in an oven at 80°C for 4 minutes to obtain a completely degradable modified polylactic acid tape.
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Abstract
The invention relates to a biodegradable modified polylactic acid adhesive tape and a preparation method thereof. The biodegradable modified polylactic acid adhesive tape takes polylactic acid (PLA), poly(butylene succinate adipate) (PBSA), nano-crystalline cellulose and thermoplastic starch (TPS) as substrates and takes modified acrylate pressure-sensitive adhesive as an adhesive; the substrate layer is arranged as a nontoxic and pollution-free mixed degradable material layer; a modified high temperature-resisting pressure-sensitive adhesive is arranged as an adhesive agent. The biodegradable modified polylactic acid adhesive tape is reasonable in material selection, is safe and environment-friendly, can meet the requirements for peeling strength and viscosity of the adhesive tape, has an excellent biodegradability, can be degraded into water and carbon dioxide under the effect of microorganism and has an excellent application prospect at various aspects.
Description
technical field [0001] The invention belongs to the field of polymer material processing, and more specifically relates to a biodegradable modified polylactic acid adhesive tape and a preparation method thereof. Background technique [0002] The waste of common polymer materials has a negative impact on the environment. In addition to being non-naturally degradable, the use of poor plasticizers and anti-aging agents further increases its harm. The development and research of green materials will help alleviate these problems in actual production and application. [0003] Green degradable materials have a wide range of sources, low energy consumption, easy recycling and high recycling rate. During the process of production, use, disposal and recycling, resources and energy can be saved, and they can be degraded or recycled at a relatively high speed after discarding. Utilization does not cause damage to the ecological balance, and at the same time, this material is harmless ...
Claims
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Application Information
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