Preparation method of biodegradable poly butylene succinate (PBS) foam materials

Abstract

The invention provides a preparation method of biodegradable poly butylene succinate (PBS) foam materials, which adopts a traditional chemical foaming method, improves and controls raw materials formula and technological conditions, and adds a cross-linking agent, a cross-linking auxiliary agent, a blowing promoter, a tackifier, an oxidation inhibitor, a foam stabilizer, a plasticizer and a release agent into raw materials except the PBS and the foaming agent so as to change fusant property of the PBS and adjust decomposition temperature of the foaming agent. The method comprises the following steps: firstly, evenly mixing various raw materials in a high-speed stirring machine; then carrying out plasticization in a mixing machine to obtain granules or sheets and carrying out chemical foam; and finally, obtaining PBS foaming materials. The PBS foaming materials have the advantages of controllable density, good mechanical proportionality, anti-chemical corrosion, easy processing, anti-vibration, heat insulation, biodegradation and the like, can replace polystyrene rigid foam, and are widely applied to the fields, such as various food packaging, medicines, medical apparatus and instruments or packaging manufacturing industry and the like.

Description

technical field

[0001] The invention relates to a preparation method of polybutylene succinate (PBS) foaming material, in particular to a biodegradable foaming material with excellent comprehensive performance prepared by adopting the traditional chemical foaming method through the control of formula and process conditions PBS foam method. The invention belongs to the technical field of polymer processing. Background technique

[0002] The negative impact of waste polymer materials on the environment has attracted widespread attention, and the solution to the increasingly serious "white pollution" problem has become the focus of widespread attention. Therefore, the research and development of degradable plastics at home and abroad are very active, and some of them have started industrial production, and the development is quite rapid. Biodegradable plastics can not only exert the excellent performance of the plastic itself during use, but also have the characteristics of b...

Examples

Embodiment 1

[0021] The raw material components are by weight: 95 parts of PBS, 3 parts of crosslinking agent AIBI, 0.5 part of triallyl trimellitate, 1 part of foaming agent OBSH, 0.1 part of zinc oxide, 0.1 part of unsaturated polyester resin, 0.05 part of antioxidant 264, 0.05 part of antioxidant TPP, 0.1 part of sodium citrate, 0.1 part of white wax oil.

[0022] First put PBS, unsaturated polyester resin, AIBI, triallyl trimellitate, OBSH, zinc oxide, unsaturated polyester resin, antioxidant 264, antioxidant TPP, sodium citrate and white wax oil at high speed The mixer was mixed at room temperature at 3000 rpm for 25 minutes, then dried in a vacuum oven at 100°C for 5 hours, then mixed on an open mill at 100°C for 40 minutes, molded and foamed on a vulcanizer with a temperature of 170°C and a pressure of 20 MPa for 30 minutes, and produced The density is about 0.60g / cm 3 Rigid polybutylene succinate (PBS) foam material with uniform cells.

Embodiment 2

[0024] The raw material components are by weight: 60 parts of PBS, 15 parts of BPO, 1 part of pentaerythritol triacrylate, 17 parts of AC, 0.5 part of magnesium oxide, 1 part of toluene dicyanocyanate, 1.5 parts of stearic acid, 0.5 part of anti Oxygen 168, 0.5 part of antioxidant 1098, 1 part of titanate coupling agent, 1 part of sodium lauryl sulfate, and 1 part of silicone grease.

[0025] First, PBS, BPO, pentaerythritol triacrylate, AC, magnesium oxide, toluene dicyanate, stearic acid, antioxidant 168, antioxidant 1098, titanate coupling agent, sodium lauryl sulfate and silicon The grease is mixed in a high-speed mixer at 600 rpm at 70°C for 5 minutes. After the material is cooled, it is dried in a vacuum oven at 60°C for 30 hours, and then mixed and plasticized in a single-screw extruder at 120°C. The barrel temperature of the injection molding machine is 150°C. And the mold temperature is 170 ℃ foaming for 5 minutes, the density is about 0.20g / cm 3 Rigid polybutylene s...

Embodiment 3

[0027]The raw material components are by weight: 80 parts of PBS, 0.05 parts of bisoxazoline, 2 parts of DCP, 5 parts of triallyl trimellitate, 4 parts of ACDC, 1 part of sodium bicarbonate, 1 part of zinc stearate , 1 part of polymethyl methacrylate, 0.5 part of talc, 0.15 part of antioxidant 1098, 0.05 part of antioxidant 1010, 2 parts of silane coupling agent, 2 parts of tributyl citrate and 1.25 parts of release agent silicon ketone.

[0028] PBS, bisoxazoline, DCP, triallyl trimellitate, ACDC, sodium bicarbonate, zinc stearate, polymethyl methacrylate, talcum powder, antioxidant 1098, antioxidant 1010 , silane coupling agent, tributyl citrate and release agent silicone were mixed in a high-speed mixer at 5000 rpm at 30°C for 10 minutes. After the material was cooled, it was dried in a vacuum oven at 80°C for 20 hours, and then used at 200°C Twin-screw extruder extrusion foaming, the density is about 0.40g / cm 3 Rigid polybutylene succinate (PBS) foam material with unifor...

technical field

[0001] The invention relates to a preparation method of polybutylene succinate (PBS) foaming material, in particular to a biodegradable foaming material with excellent comprehensive performance prepared by adopting the traditional chemical foaming method through the control of formula and process conditions PBS foam method. The invention belongs to the technical field of polymer processing. Background technique

[0002] The negative impact of waste polymer materials on the environment has attracted widespread attention, and the solution to the increasingly serious "white pollution" problem has become the focus of widespread attention. Therefore, the research and development of degradable plastics at home and abroad are very active, and some of them have started industrial production, and the development is quite rapid. Biodegradable plastics can not only exert the excellent performance of the plastic itself during use, but also have the characteristics of b...

Examples

Embodiment 1

[0021] The raw material components are by weight: 95 parts of PBS, 3 parts of crosslinking agent AIBI, 0.5 part of triallyl trimellitate, 1 part of foaming agent OBSH, 0.1 part of zinc oxide, 0.1 part of unsaturated polyester resin, 0.05 part of antioxidant 264, 0.05 part of antioxidant TPP, 0.1 part of sodium citrate, 0.1 part of white wax oil.

[0022] First put PBS, unsaturated polyester resin, AIBI, triallyl trimellitate, OBSH, zinc oxide, unsaturated polyester resin, antioxidant 264, antioxidant TPP, sodium citrate and white wax oil at high speed The mixer was mixed at room temperature at 3000 rpm for 25 minutes, then dried in a vacuum oven at 100°C for 5 hours, then mixed on an open mill at 100°C for 40 minutes, molded and foamed on a vulcanizer with a temperature of 170°C and a pressure of 20 MPa for 30 minutes, and produced The density is about 0.60g / cm 3 Rigid polybutylene succinate (PBS) foam material with uniform cells.

Embodiment 2

[0024] The raw material components are by weight: 60 parts of PBS, 15 parts of BPO, 1 part of pentaerythritol triacrylate, 17 parts of AC, 0.5 part of magnesium oxide, 1 part of toluene dicyanocyanate, 1.5 parts of stearic acid, 0.5 part of anti Oxygen 168, 0.5 part of antioxidant 1098, 1 part of titanate coupling agent, 1 part of sodium lauryl sulfate, and 1 part of silicone grease.

[0025] First, PBS, BPO, pentaerythritol triacrylate, AC, magnesium oxide, toluene dicyanate, stearic acid, antioxidant 168, antioxidant 1098, titanate coupling agent, sodium lauryl sulfate and silicon The grease is mixed in a high-speed mixer at 600 rpm at 70°C for 5 minutes. After the material is cooled, it is dried in a vacuum oven at 60°C for 30 hours, and then mixed and plasticized in a single-screw extruder at 120°C. The barrel temperature of the injection molding machine is 150°C. And the mold temperature is 170 ℃ foaming for 5 minutes, the density is about 0.20g / cm 3 Rigid polybutylene s...

Embodiment 3

[0027]The raw material components are by weight: 80 parts of PBS, 0.05 parts of bisoxazoline, 2 parts of DCP, 5 parts of triallyl trimellitate, 4 parts of ACDC, 1 part of sodium bicarbonate, 1 part of zinc stearate , 1 part of polymethyl methacrylate, 0.5 part of talc, 0.15 part of antioxidant 1098, 0.05 part of antioxidant 1010, 2 parts of silane coupling agent, 2 parts of tributyl citrate and 1.25 parts of release agent silicon ketone.

[0028] PBS, bisoxazoline, DCP, triallyl trimellitate, ACDC, sodium bicarbonate, zinc stearate, polymethyl methacrylate, talcum powder, antioxidant 1098, antioxidant 1010 , silane coupling agent, tributyl citrate and release agent silicone were mixed in a high-speed mixer at 5000 rpm at 30°C for 10 minutes. After the material was cooled, it was dried in a vacuum oven at 80°C for 20 hours, and then used at 200°C Twin-screw extruder extrusion foaming, the density is about 0.40g / cm 3 Rigid polybutylene succinate (PBS) foam material with unifor...