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Recyclable and degradable release material and preparation method thereof

A release material and base material technology, applied in the field of recyclable and degradable release material and its preparation, can solve the problem of unsuitable release silicon coating treatment, unsuitable high temperature release silicon coating, low transmittance of optical parameters And other problems, to achieve excellent tensile strength and barrier properties, low price, superior optical properties

Pending Publication Date: 2021-11-05
CROWN TAICANG ADHESIVE PROD CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese invention patent CN105860142A discloses an environmentally friendly recyclable degradable paper material and its preparation method. Gelatinized starch glue and paper powder are used to prepare environmentally friendly recyclable degradable paper material, but the surface of the paper material is rough and uneven. Not resistant to high temperature, not suitable for release silicon coating
Chinese invention patent CN109135222A discloses a polylactic acid degradable film and its preparation method, but its appearance has many crystal point defects, low optical parameter transmittance, high haze, especially poor temperature resistance, and shrinkage will occur at high temperatures above 80 °C Deformation, not suitable for high temperature release silicon coating

Method used

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  • Recyclable and degradable release material and preparation method thereof

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Embodiment 1

[0033] A recyclable and degradable release material and a preparation method thereof, comprising the following steps:

[0034] Polylactic acid resin (PLA) was dried at 80° C. for 5 h under vacuum conditions, and then 70 mass parts of polylactic acid resin, 15 mass parts of polybutylene carbonate, 5 mass parts of Irganox 1010 (Swiss Ciba Company), nano-silica Mix 3 parts by mass and 7 parts by mass of nano-titanium dioxide at a temperature of 170°C for 3 minutes, put the mixed block into a twin-screw extruder for processing, and then stretch it longitudinally and transversely to obtain a biaxially stretched BOPLA film , the melting temperature of the die head of the main extruder is 220°C; when stretching longitudinally first, the temperature in the preheating zone is 40°C, the temperature in the stretching zone is 60°C, the stretching ratio in the longitudinal direction is 2.5 times, and cooled to 35°C; then when stretching in the transverse direction , the temperature in the ...

Embodiment 2

[0036] A recyclable and degradable release material and a preparation method thereof, comprising the following steps:

[0037]Polylactic acid resin (PLA) was dried under vacuum at 80°C for 4h, then 75 parts by mass of polylactic acid resin, 10 parts by mass of polybutylene carbonate, 5 parts by mass of gafos 168 (Ciba, Switzerland), 10 parts by mass of nano-titanium dioxide Knead each part at a temperature of 170°C for 3 minutes, put the kneaded block into a twin-screw extruder for processing, and then stretch it longitudinally and transversely to obtain a biaxially stretched BOPLA film. The die head of the main extruder The melting temperature is 230°C; when stretching longitudinally first, the temperature in the preheating zone is 75°C, the temperature in the stretching zone is 80°C, the longitudinal stretching ratio is 3.5 times, and cooled to 35°C; then when stretching transversely, the temperature in the preheating zone is 120°C , the temperature in the stretching zone is...

Embodiment 3

[0039] A recyclable and degradable release material and a preparation method thereof, comprising the following steps:

[0040] The parts by mass of each component are 50 parts of tapioca starch, 10 parts of starch modifier, 5 parts of wetting agent, 15 parts of reinforcing agent, and 20 parts of polyvinyl alcohol; the starch modifier is degradable polycaprolactone, wetting agent It is PCL-based polyurethane prepolymer (PCLPU), and the reinforcing agent is aldehyde-based cellulose; gelatinized starch glue is formed by adding the components in proportion, stirring and mixing, then kneading with paper powder, and finally drying and granulating; 75 parts of polylactic acid resin, 15 parts of polybutylene carbonate, 5 parts of DLTP (German Albemarle), 5 parts of nano-alumina, the polylactic acid resin was vacuum-dried at 80 °C for 5 hours, and then the dried polylactic acid resin was mixed with poly Butylene carbonate and DLTP (German Albemarle) were melted and mixed at a temperatu...

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Abstract

The invention relates to a recoverable and degradable release material and a preparation method thereof, and belongs to the technical field of release materials. The release material comprises a base material layer and a release agent coating arranged on the base material layer, and further comprises a biological substrate coating arranged between the base material layer and the release agent coating, the base material layer is a film-based material layer or a paper-based material layer; the paper-based material layer comprises bio-based raw paper and a film-based material; and the biological substrate coating is acrylate. The raw material components of the acrylate are SARBIO@5201, SARBIO@5400, SARBIO@6100 and an initiator 184, and the raw material components of the film base material are polylactic acid resin, poly (butylene carbonate), an antioxidant and an inorganic filler; the bio-based body paper comprises the following raw material components: gelatinized starch glue and paper powder. The prepared release material can be recycled, waste is reduced, and the concept of green and environment-friendly development is met.

Description

technical field [0001] The invention relates to the technical field of release materials, in particular to a recyclable and degradable release material and a preparation method thereof. Background technique [0002] At present, the ecological environment and environmental pollution problems have attracted great attention from all countries in the world. Our country proposes "strive to reach the peak of carbon dioxide emissions before 2030, and strive to achieve carbon neutrality before 2060". In order to reduce carbon emissions, green environmental protection, green design Ideas come into being. In the consumer electronics market, a large number of release materials will be applied in the field of electronic product protection and bonding, and these release materials will be discarded directly after die-cutting. Ordinary release materials are mainly based on plastic films such as PET, PP, and PE. After these release materials are discarded, the problem of garbage disposal b...

Claims

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Application Information

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IPC IPC(8): C08J7/04C08J5/18C08L67/04C08L69/00D21H19/82D21H19/84D21H17/28D21H17/53D21H17/36D21H19/16D21H19/62D21H19/32D21H21/14
CPCC08J7/04C08J7/042C08J5/18D21H19/82D21H19/84D21H17/28D21H17/53D21H17/36D21H19/16D21H19/62D21H19/32D21H21/14C08J2367/04C08J2469/00C08J2433/04C08J2483/04
Inventor 张庆杰匡燕麦启波
Owner CROWN TAICANG ADHESIVE PROD CO LTD
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