Degradable bioplastic composite paper and preparation process thereof

Abstract

The invention provides degradable bioplastic composite paper and a preparation process thereof. The degradable bioplastic composite paper at least comprises a first layer (1) containing bioplastic anda paper layer (3) as a second layer, and the first layer and the second layer are bonded together through an adhesive layer (2). The degradable biological plastic composite paper can overcome the adverse environmental influence caused by high-content plastic, and has excellent tensile strength performance and wet strength.

Description

technical field

[0001] The invention belongs to the technical field of papermaking, and in particular relates to a degradable bioplastic composite paper and a preparation process thereof. Background technique

[0002] With the emphasis on environmental protection, more and more people are aware of the harm that papermaking brings to the environment, and people's calls for environmentally friendly paper are getting higher and higher. Providing and using environmentally friendly paper is an important way to reduce environmental pressure. The environment and sustainability have become increasingly important factors in the design and specification of disposable paper products, as well as in their safe disposal after use. As a result of greater social responsibility and concern for the environment, through government regulations, institutional investors and consumer demand, companies are driven to produce more sustainable and environmentally safe products.

[0003] Synthetic pa...

Examples

Embodiment 1

[0054] After replacing the air in the 500mL round bottom flask with nitrogen, add 81.9g of succinic acid, 128.0g of 1,4-butanediol, 12.6g of lactic acid, and 88.4g of dimethyl terephthalate; Increase the temperature, react at 180°C for 4 hours, and remove the water generated during the reaction; after that, add 0.10g antimony acetate, 0.15g tributyltin oxide and 0.07g tetrabutyl titanate as catalysts and 0.2g Trimethyl phosphate was used as a stabilizer; subsequently, the temperature was raised to 246° C. and a polycondensation reaction was performed at this temperature and a reduced pressure of 0.3 Torr for 180 minutes. After the reaction, it was detected that the melt index (190°C, 2160g) of the degradable resin was 12.6g / 10min, the number average molecular weight was 39,000, and the melting point measured by DSC was 86°C.

[0055] Mix the degradable resin prepared above with starch (Shandong Fengtai Environmental Protection Technology Co., Ltd.) in a weight ratio of 7:3, fu...

Embodiment 2

[0057] According to the HJ / T340-2007 standard, the kraft chemical wood pulp production process (with reference to the method of CN104452467A embodiment 1, wherein the wood raw material adopts coniferous wood) is added to the pulp by adding a strength enhancer shown in 0.1wt% formula (II), A lightweight paper is produced with a density of 18.2 g / m 2 .

[0058] The bioplastic film obtained in Example 1 and the lightweight paper obtained in Example 2 are fed into the manufacturing equipment and adhered together to produce degradable bioplastic composite paper. The specific process is: the bioplastic film can be passed through The first feed roll is drawn into the system, the light weight paper can be drawn in with the second feed roll, and the paper is then passed through bonding rolls which apply a coating of soy protein as a binder to the paper One side of the paper so that the lightweight paper with a soy protein adhesive coating and the bioplastic film can be attached togeth...

technical field

[0001] The invention belongs to the technical field of papermaking, and in particular relates to a degradable bioplastic composite paper and a preparation process thereof. Background technique

[0002] With the emphasis on environmental protection, more and more people are aware of the harm that papermaking brings to the environment, and people's calls for environmentally friendly paper are getting higher and higher. Providing and using environmentally friendly paper is an important way to reduce environmental pressure. The environment and sustainability have become increasingly important factors in the design and specification of disposable paper products, as well as in their safe disposal after use. As a result of greater social responsibility and concern for the environment, through government regulations, institutional investors and consumer demand, companies are driven to produce more sustainable and environmentally safe products.

[0003] Synthetic pa...

Examples

Embodiment 1

[0054] After replacing the air in the 500mL round bottom flask with nitrogen, add 81.9g of succinic acid, 128.0g of 1,4-butanediol, 12.6g of lactic acid, and 88.4g of dimethyl terephthalate; Increase the temperature, react at 180°C for 4 hours, and remove the water generated during the reaction; after that, add 0.10g antimony acetate, 0.15g tributyltin oxide and 0.07g tetrabutyl titanate as catalysts and 0.2g Trimethyl phosphate was used as a stabilizer; subsequently, the temperature was raised to 246° C. and a polycondensation reaction was performed at this temperature and a reduced pressure of 0.3 Torr for 180 minutes. After the reaction, it was detected that the melt index (190°C, 2160g) of the degradable resin was 12.6g / 10min, the number average molecular weight was 39,000, and the melting point measured by DSC was 86°C.

[0055] Mix the degradable resin prepared above with starch (Shandong Fengtai Environmental Protection Technology Co., Ltd.) in a weight ratio of 7:3, fu...

Embodiment 2

[0057] According to the HJ / T340-2007 standard, the kraft chemical wood pulp production process (with reference to the method of CN104452467A embodiment 1, wherein the wood raw material adopts coniferous wood) is added to the pulp by adding a strength enhancer shown in 0.1wt% formula (II), A lightweight paper is produced with a density of 18.2 g / m 2 .

[0058] The bioplastic film obtained in Example 1 and the lightweight paper obtained in Example 2 are fed into the manufacturing equipment and adhered together to produce degradable bioplastic composite paper. The specific process is: the bioplastic film can be passed through The first feed roll is drawn into the system, the light weight paper can be drawn in with the second feed roll, and the paper is then passed through bonding rolls which apply a coating of soy protein as a binder to the paper One side of the paper so that the lightweight paper with a soy protein adhesive coating and the bioplastic film can be attached togeth...

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