Biodegradation starch resin masterbatch

A starch resin and biodegradation technology, applied in the field of resin masterbatch, can solve the problems of poor processability of modified starch, poor mechanical strength of film products, poor control of cross-linking degree, etc., and achieves low temperature sensitivity and processing performance. The effect of excellent, excellent machinability

Inactive Publication Date: 2005-03-23
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: firstly, the degree of crosslinking is not easy to control when the starch is modified with a crosslinking agent; secondly, the crosslinking reaction occurs between the starch and the crosslinking agent, and the strength of the obtained starch is better, but it is difficult for the crystallization of the starch The treatment effect of polarity and reactivity is not good; third, the cross-linking reaction reduces the r

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1), the preparation of modified starch

[0019] The proportion of each component (parts by weight):

[0020] Corn starch (fineness 100 mesh) 90.0

[0021] Vinyl 5.0

[0022] Operation steps: first refine the corn starch to 1000 mesh with a ball mill micropowder, then mix it with ethylene evenly, and send it to a jet mill for crushing, so that it can undergo graft copolymerization reaction with starch to obtain mechanochemical graft copolymerization modification Starch, the fineness is 3000 mesh.

[0023] 2) Preparation of biodegradable starch resin masterbatch

[0024] The proportion of each component (parts by weight):

[0025] Modified starch 60.0

[0026] Polyethylene 18.0

[0027] Dibutyl Adipate 4.0

[0028] Stearic acid 0.4

[0029] Polyethylene Wax 5.0

[0030] Dicumyl peroxide 0.09

[0031] Maleic anhydride 2.0

[0032] ...

Embodiment 2

[0036] 1) Preparation of modified starch

[0037] Each group proportioning amount (parts by weight):

[0038] Tapioca starch (fineness 150 mesh) 95.0

[0039] Dodecenylsuccinic anhydride 8.0

[0040] Operating steps: operate in the manner described in Example 1. The fineness of cassava starch after ball milling is 1200 mesh, and the fineness of jet milling is 3500 mesh.

[0041] 2) Preparation of biodegradable starch resin masterbatch

[0042] Each group proportioning amount (parts by weight):

[0043] Modified starch 72.0

[0044] Polypropylene 20.0

[0045] Dibutyl phthalate 2.0

[0046] Liquid paraffin 1.2

[0047] Chlorinated Paraffin 3.0

[0048] Di-tert-butyl peroxide 1.0

[0049] Octadenoic acid 1.8

[0050] Methyl Methacrylate-Butadiene-Styrene 6.0

[0051] Thiodiethylene glycol bis(β-aminobutenoic acid) ester 4.0

[0052] The operation ...

Embodiment 3

[0054] 1) Preparation of modified starch

[0055] The proportion of each component (parts by weight):

[0056] Potato starch (fineness 200 mesh) 100.0

[0057] Isopropyl Triisostearyl Titanate 2.0

[0058] Operation steps: operation step embodiment 1, the fineness of potato starch after ball milling is 1500 mesh, and the fineness after jet milling is 5000 mesh.

[0059] 2) Preparation of biodegradable starch resin masterbatch

[0060] The proportion of each component (parts by weight):

[0061] Modified starch 68.0

[0062] Polyethylene (PE) 16.0

[0063] Sorbitan Acetate 3.0

[0064] Stearic acid amide 0.4

[0065] Oxidized polyethylene 3.5

[0066] Benzoyl peroxide 0.2

[0067] Undecenylsuccinic anhydride 1.2

[0068] Unsaturated polyester (UP) 3.0

[0069] Pentaerythritol 2.0

[0070] The operation steps are the same as i...

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Abstract

The invention provides a biodegradable starch resin parent material, and its characteristic: its components in weight share: modified starch 60.0-85.0, resin 10.0-25.0, plasticizer 1.0-8.0, lubricant 0.1-1.5, dispersant 1.0-8.0, initiator 0.08-1.0, graft modifier 9.0.-100.0, flexibilizer 1.0-6.0, and stabilizer 0.1-5.0, where the modified starch is a copolymer grafted mechanochemically of starch and monomer or polymer modifier in weight shares of 90.0-100.0 and 1.0-10.0, respectively. It has high starch content, good transparency, excellent processability, excellent mechanical property and good biodegradability.

Description

technical field [0001] The invention relates to a resin masterbatch, in particular to a biodegradable starch resin masterbatch. Background technique [0002] Plastic is one of the most widely used materials in the world. The wide application of plastic products has caused serious pollution to the ecological environment, and the development and application of degradable plastics is one of the most effective ways to solve this problem. The degradable plastics currently in use are mainly starch plastics. The starch content in this type of starch plastics is relatively low, generally 10-30%, and the remaining main components are still difficult-to-degrade polymer components. Chinese patent CN1478809A discloses a biodegradable starch resin masterbatch and its preparation method. Firstly, the micronized starch is prepared by a high-speed impact method, heated in a high-speed mixer, and a cross-linking agent is added to prepare a micronized modified starch. Cool the starch and add...

Claims

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Application Information

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IPC IPC(8): C08K5/09C08L3/04
Inventor 陈庆徐正华杨欣宇陈兵
Owner CHENDU NEW KELI CHEM SCI CO LTD
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