Flame-retardant degradable adhesive tape and preparation method thereof

A tape, alcoholysis technology, applied in the direction of adhesives, film/sheet adhesives, pressure-sensitive films/sheets, etc. problems, to achieve broad market application prospects, to solve the single method of recycling and reproduction, and to achieve the effect of low-carbon and green use of recycling and the environment

Active Publication Date: 2022-07-29
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it does not have flame retardant properties and is prepared by blending methods, so the performance stability of the product is poor
[0011] According to the relevant patents reported above, the current flame retardant tape is mainly prepared by blending method, and the flame retardant tape prepared has excellent flame retardant performance, but it will cause pollution to the environment and affect the bonding performance of the material.
While biodegradable tapes have good adhesive properties, but do not have flame retardant properties

Method used

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  • Flame-retardant degradable adhesive tape and preparation method thereof
  • Flame-retardant degradable adhesive tape and preparation method thereof
  • Flame-retardant degradable adhesive tape and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] A preparation method of flame retardant degradable adhesive tape, the concrete steps are as follows:

[0097] (1) Treatment of discarded PBT

[0098] Pulverize the recycled waste PBT materials to obtain PBT powder with a particle size of less than 2 mm, which is then sieved and placed in a vacuum oven at 100 °C for drying for 12 hours;

[0099] (2) Preparation of regenerated BHBT

[0100] Take PBT powder, 1,4-butanediol, zinc acetate, triphenyl phosphate, sodium acetate and add it to the reaction kettle, pass nitrogen protection, dissolve at 180 ° C, and gradually heat up to 200 ° C after the system is clarified, keep This temperature was reacted for 1.5h; the water output was recorded, when it reached 90% of the theoretical value, vacuum was applied, the vacuum degree of the control system was 1000Pa, and the control time was 20min; then sodium phytate was added, and after the reaction for 15min, the unreacted substances were filtered while hot to obtain regeneration ...

Embodiment 2

[0115] A preparation method of flame retardant degradable adhesive tape, the concrete steps are as follows:

[0116] (1) Treatment of discarded PBT

[0117] Pulverize the recycled waste PBT materials to obtain PBT powder with a particle size of less than 2 mm, which is then sieved and placed in a vacuum oven at 130°C for drying for 8 hours;

[0118] (2) Preparation of regenerated BHBT

[0119] Take PBT powder, 1,4-butanediol, zinc acetate, triphenyl phosphate, and sodium acetate, add them to the reaction kettle, pass nitrogen protection, dissolve at 210 ° C, and gradually heat up to 240 ° C after the system is clarified, keep The temperature was reacted for 2.5h; the water output was recorded, when it reached 90% of the theoretical value, vacuum was applied, the vacuum degree of the control system was 200Pa, and the control time was 60min; then sodium phytate was added, and after the reaction for 15min, the unreacted substances were filtered while hot to obtain regeneration ...

Embodiment 3

[0132] A preparation method of flame retardant degradable adhesive tape, the concrete steps are as follows:

[0133] (1) Treatment of discarded PBT

[0134] Pulverize the recycled waste PBT materials to obtain PBT powder with a particle size of less than 2 mm, which is then sieved and placed in a vacuum oven at 100°C for drying for 8 hours;

[0135] (2) Preparation of regenerated BHBT

[0136] Take PBT powder, 1,4-butanediol, zinc acetate, triphenyl phosphate, and sodium acetate, add them to the reaction kettle, pass nitrogen protection, dissolve at 180 ° C, and gradually heat up to 240 ° C after the system is clarified, keep This temperature is reacted for 1.5h; the water output is recorded, when it reaches 90% of the theoretical value, vacuum is applied, the vacuum degree of the control system is 200Pa, and the control time is 20min; then sodium phytate is added, and after the reaction for 15min, the unreacted substances are filtered while hot to obtain regeneration BHBT; ...

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Abstract

The preparation method comprises the following steps: firstly, respectively preparing a degradable adhesive tape base layer and a flame-retardant degradable adhesive tape bonding layer, and then coating, curing and curing the flame-retardant degradable adhesive tape bonding layer on the surface of the degradable adhesive tape base layer to obtain the flame-retardant degradable adhesive tape. The degradable adhesive tape base layer is obtained by carrying out ester exchange and condensation polymerization on BHBT and BHAT to prepare a degradable PBAT polymer and then carrying out blow molding; the flame-retardant degradable adhesive tape bonding layer is obtained by carrying out ester exchange and condensation polymerization on BHBT, BHAT and a pressure-sensitive adhesive aid to prepare a colloidal flame-retardant degradable PBAT polymer and then curing; the prepared pressure-sensitive adhesive is excellent in pressure-sensitive performance, the limit oxygen index is 28-45%, and the flame retardant rating is UL94 VTM-0; and the biodegradation rate in 90 days is 50-90%. The flame-retardant degradable adhesive tape prepared by the invention has high adhesive force and excellent flame retardant property, is prepared from waste PBT (Polybutylene Terephthalate) plastic, is biodegradable and has a wide market application prospect.

Description

technical field [0001] The invention belongs to the technical field of adhesive tapes, and relates to a flame-retardant and degradable adhesive tape and a preparation method thereof. Background technique [0002] With the rapid development of the express delivery industry, the sharp increase in the amount of packaging products has brought a huge burden to society and the environment. Taking 2018 as an example, my country's express delivery business volume reached 50.71 billion pieces, consuming a total of about 43 billion meters of packaging tape, and it can circle the earth 1077 times. At this stage, most of the tapes used in the industry are traditional BOPP tapes. The raw materials come from petroleum resources. They are non-renewable and increasingly depleted with the increase in usage. They cannot be degraded in a short time after use. After the material used to complete the packaging mission, it is directly turned into packaging waste, which not only aggravates the wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/25C09J7/38C09J167/02C08G63/692C08G63/183C08G63/78
CPCC09J7/255C09J7/38C09J167/02C08G63/6926C08G63/183C08G63/78C09J2467/006C09J2467/00
Inventor 江振林张运朱科宇徐晨雪朱敏范欣许佳敏任皖挺
Owner SHANGHAI UNIV OF ENG SCI
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