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Polylactic resin composition

A technology of polylactic acid resin and composition, which is applied in the field of polylactic acid resin composition, can solve problems such as lowering the durable temperature, lowering the durable temperature of products, and limiting the use range of products, so as to reduce production costs, improve flame retardancy, and improve processing Effects on Performance and Productivity

Inactive Publication Date: 2012-11-14
MITAC PRECISION TECH(KUNSHAN) CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, the flame retardants available in the current market usually also have a plasticizing effect on plastics, resulting in a decrease in the durable temperature of the product
In the current flame retardant research of polylactic acid, it can usually be found that the addition of flame retardants can make the flame retardant grade of polylactic acid materials reach V-0, but it also reduces the durable temperature of the product, thus limiting the scope of use of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] The thermoplastic elastomer is pretreated first. Take 80wt% styrene-ethylene-butadiene-styrene copolymer and 20wt% paraffin processing oil and place them in a high-speed mixer for high-speed mixing. After about 20 minutes, the processing oil and styrene-ethylene-butadiene - The styrene copolymer can reach a uniformly mixed state, take it out and let it stand for more than 8 hours for later use.

[0066] Get 100 mass parts of polylactic acid, 15 mass parts of new phosphorus flame retardant FR-1, 20 mass parts of pretreated styrene-ethylene-butadiene-styrene copolymer, 5 mass parts of talcum powder and 5 parts by mass of ethylene-butadiene-methyl methacrylate grafted maleic anhydride copolymer, first stir evenly in a dry mixing manner, and then introduce a volumetric feeder into a twin-screw extruder at 180-220 The melting and kneading process is carried out under the condition of ℃, and the extruded bar obtained after the melting and kneading process is cooled into a so...

Embodiment 2-16

[0069] Using the same melt kneading conditions and processing methods described in Example 1, according to the composition listed in Table 1 and Table 2, change the types and mixing ratios of different new phosphorus-based flame retardants in the composition to obtain poly The material particles of the lactic acid resin composition were made into standard test pieces conforming to standard test specifications for performance measurement, and the obtained measurement results are listed in Table 1 and Table 2 at the same time.

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Abstract

The invention provides a polylactic resin composition which mainly comprises the following components expressed in mass parts: 100 parts of a polylactic resin, 1 to 40 parts of a novel phosphorus flame retardant, 0 to 0.8 part of a trickling-down resisting agent, 0 to 40 parts of thermoplastic elastomers, 0.1 to 30 parts of an inorganic filler and 0 to 20 parts of a high-molecular compatibilizer. Compared with the prior art, the polylactic resin composition provided by the invention has the following advantages: (1) flame resistance of a material is improved, the grade of flame resistance of the material is above Grade UL94V-2, and heat resistance of the material is maintained as well; (2) the novel phosphorus flame retardant is employed in the invention to improve flame resistance the material, and no halogen flame retardant is used, which accords with the environmental protection concept of sustained development; and (3) the polylactic resin composition has the characteristic of capacity of rapid crystallization, so the composition can be easily used in manufacturing procedures of common plastic products, processing performance and production efficiency of the products are improved, and production cost is reduced.

Description

【Technical field】 [0001] The present invention relates to a polylactic acid resin composition, in particular to a polylactic acid resin composition which not only improves flame retardancy but also maintains its heat resistance. 【Background technique】 [0002] In recent years, due to the rising awareness of environmental protection in society and the rising price of crude oil, the public has paid more and more attention to the application of non-petrochemical source materials. Therefore, the application of biocomposites made of bioplastics in the plastics industry is quite eye-catching. Among all commercially produced bioplastics, polylactic acid resin (polylactide resin, PLA) is the most extensively researched because of its excellent physical properties and the lowest acquisition cost. From disposable application products such as disposable tableware, packaging film bags, to mid-level application products such as stationery gifts, children's toys, to high-end application ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08K13/02C08K5/5357
Inventor 朱明毅董晓
Owner MITAC PRECISION TECH(KUNSHAN) CORP
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