Biodegradable composition, and its preparing method and foamed product
A biodegradable and composite technology, applied in the field of foaming products, can solve the problems of poor expansion ratio and compressive strength, poor resilience of open-cell foam, and achieve good expansion ratio and compressive strength, high mold The effect of degradable grade and high biodegradation rate
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0046] This example is used to illustrate the preparation of the biodegradable composition of the present invention.
[0047] (1) 30 parts by weight of starch phosphate monoester (produced by Beijing Quanxing Starch Factory; the number average molecular weight is 200000, and the degree of substitution is 1.0), 56 parts by weight of polylactic acid (ECO-PLA produced by Kaji Company; at 190°C The melt index is 10 grams / 10 minutes), 7 parts by weight sorbitol, 3.5 parts by weight glycerin, 0.8 parts by weight zinc stearate, 0.2 parts by weight calcium stearate, 0.5 parts by weight epoxy soybean oil add in mixer Stir evenly at room temperature. The mixer first mixes at a low speed of 100 rpm for about 7 minutes, and then mixes at a high speed of 200 rpm for 8 minutes;
[0048] (2) The above-mentioned uniformly stirred mixture is sent into a twin-screw extruder, the length-to-diameter ratio of the extruder is L:D=48:1, and the screw diameter is Φ75 mm. Adjust the screw speed to gr...
Embodiment 2
[0051] This example is used to illustrate the preparation of the biodegradable composition of the present invention.
[0052] (1) 70.0 parts by weight of starch sulfate (dry basis weight) (produced by Beijing Quanxing Starch Factory; the number average molecular weight is 150000, and the degree of substitution is 0.5), 20 parts by weight of polylactic acid (2002D produced by Nature Company; at 190 The melt index at ℃ is 20 grams / 10 minutes), 5 parts by weight of sorbitol, and 1 part by weight of glycerin are added in the blender and stirred evenly at room temperature. RPM high-speed mixing for 6 minutes;
[0053] (2) The above-mentioned uniformly stirred mixture is sent into a twin-screw extruder, the length-to-diameter ratio of the extruder is L:D=48:1, and the screw diameter is Φ75 mm. Adjust the screw speed to gradually increase from 100 rpm to 200 rpm, 300 rpm, 400 rpm, 500 rpm, 700 rpm, 900 rpm, and control the temperature of each section separately At 150°C, 165°C, 165...
Embodiment 3
[0056] This embodiment is used to illustrate the preparation of the biodegradable composition of the present invention
[0057] (1) 50.0 parts by weight (dry weight) of starch acetate (produced by Beijing Quanxing Starch Factory; the number average molecular weight is 190000, and the degree of substitution is 1.5), 30 parts by weight of polylactic acid (ECO-PLA produced by Kaji Company; The melt index at 190°C is 5 g / 10 minutes), 7 parts by weight of sorbitol, 10 parts by weight of glycerin, 1 part of zinc stearate, 0.5 parts of calcium stearate, 0.5 parts by weight of Beijing Tin 8831, 0.5 parts by weight Add one part of antioxidant DSTP into the mixer and stir evenly at room temperature. The mixer first mixes at a low speed of 80 rpm for about 5 minutes, and then mixes at a high speed of 15 rpm for 6 minutes;
[0058] (2) The above-mentioned uniformly stirred mixture is sent into a twin-screw extruder, the length-to-diameter ratio of the extruder is L:D=48:1, and the screw d...
PUM
Property | Measurement | Unit |
---|---|---|
melt flow index | aaaaa | aaaaa |
melt flow index | aaaaa | aaaaa |
melt flow index | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com