Injection molding grade natural straw plastic and its preparation method and application

An injection-moulding-grade and natural technology, applied in the field of preparation of injection-moulding-grade natural straw plastics, can solve the problems of insufficient adhesion between straw fibers and polymer resins, incomplete treatment of straw fibers, and low content of straw fibers, and achieve better product design. It has the effect of functionalization, simple product processing and small mold shrinkage.

Inactive Publication Date: 2018-04-24
JIANGSU JINHE HI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the content of straw fiber in straw plastic products is low; the treatment of straw fiber is not complete, and there are water marks on the surface of the product; the bonding force between straw fiber and polymer resin is not enough, and the phenomenon of "running fiber" is prone to occur

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This embodiment provides a method for preparing injection-grade natural straw plastic. The preparation raw materials are: straw, diatomaceous earth, polymer resin and polymer additives.

[0033] Weigh the above raw materials in parts by weight: 55 parts of natural straw (wheat straw, crushed to 350 mesh), 5 parts of diatomaceous earth as a filler, 35 parts of polymer resin and 5 parts of polymer additives; among them, polymer The resin is linear low-density polyethylene (Guangzhou Petrochemical / DFDA-7042); the polymer additives are epoxy soybean oil (Nantong Haierma / CPW), titanate coupling agent (Yangzhou Tianyang Chemical Industry / A9), poly Vinyl wax (Nanjing Ruiside / CPW) is obtained after mixing in a ratio of 2:1:1.

[0034] The specific production process of the straw plastic is as follows:

[0035] 1. Mix the natural straw, filler and part of the polymer additives (the polymer additives added in step 1 in this example is 1 / 2 of the total polymer additives, which can be de...

Embodiment 2

[0043] This embodiment provides a method for preparing injection-grade natural straw plastic. The required raw materials are rice husk, talc (filler), polymer resin and polymer additives.

[0044] The above-mentioned raw materials are weighed in parts by weight: 65 parts of rice husk (crushed to 300 mesh), 5 parts of talc, 25 parts of polymer resin, and 5 parts of polymer additives.

[0045] Among them, the polymer resin is high-density polyethylene (Iran Petrochemical / HB0035), linear low-density polyethylene (Guangzhou Petrochemical / DFDA-7042) mixed in a mass ratio of 3:1, and the polymer additive is glycerin ( Changzhou Lanya New Material Technology Co., Ltd. / LY-95), titanate coupling agent (Yangzhou Tianyang Chemical Industry / A9) and polyethylene wax (Nanjing Ruiside / CPW) are mixed in a mass ratio of 2:2:1.

[0046] The specific production process of the product in this embodiment is the same as that in embodiment 1, and the obtained product can be used to prepare injection molde...

Embodiment 3

[0048] This embodiment provides a method for injection molding grade natural straw plastic. The required raw materials are rice husk (natural straw), mica powder (filler), polymer resin and polymer additives.

[0049] Weigh the above-mentioned raw materials in parts by weight: 32 parts of rice husk (pulverized to 250 mesh), 12 parts of diatomaceous earth, 52 parts of polymer resin, and 4 parts of polymer additives; among them, the polymer resin is polypropylene, The polymer additives are titanate coupling agent (Yangzhou Tianyang Chemical Industry / A9) and maleic anhydride grafted polypropylene ( Ningbo Nengzhiguang New Material Technology Co., Ltd. / GPM200A) obtained after compounding at a weight ratio of 1:1;

[0050] The specific production process of the product of this embodiment is the same as that of Embodiment 1. The material of this embodiment or the material can be used to make daily necessities such as lunch boxes and beakers.

[0051] After testing, the product melt index...

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Abstract

The invention provides an injection molding grade natural straw plastic and its preparation method and application. The injection molding grade natural straw plastic is prepared from, by weight, 25-65parts of nature straw, 0-12 parts of filling agent, 25-63 parts of macromolecular resin, and 4-5 parts of macromolecular assistant. The preparation method includes steps of mixing nature straw with granularity of 250-350 meshes with diatomite, macromolecular resin and macromolecular assistant to form a raw material; extruding and pelleting by a dual-screw mixing extruder to obtain the injection molding grade natural straw plastic. The injection molding grade natural straw plastic can replace the application of a traditional thermal plastic resin on daily goods; the injection molding grade natural straw plastic passes through the national food hygienic index and can directly contact food. The injection molding grade natural straw plastic has straw smell, and its smell is durable, fragrantand nature; the product is easy to shape and has straw texture; the injection molding grade natural straw plastic can be applied to food packaging, and is wide in application and not easy to wet and go mouldy.

Description

Technical field [0001] The invention relates to the technical field of polymer material modification and the technical field of biomass material processing, in particular to a preparation method and application of injection-grade natural straw plastic. Background technique [0002] Our country is a large agricultural country. Rice and wheat are the main cash crops. Their short maturity period and wide planting area bring economic benefits to farmers, but also create problems for farmers and the government. The traditional treatment of crop stalks is only solved by incineration, which not only brings harm to the environment, but also increases safety risks to the farmers themselves. With people’s general understanding of this hazard, straw processing has gradually changed from incineration to other forms, that is, straw can be crushed and used to make pellets with a straw pellet machine; it can also be made with a stick machine. Fuel rod , Can also be carbonized into carbon, can a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L23/08C08L55/02C08L75/04C08L91/00C08L23/06C08L23/12C08K7/26C08K5/10C08K3/34C08K5/053B29C47/92B29C48/92
CPCB29C48/92B29C2948/92704C08L23/06C08L23/12C08L55/02C08L75/04C08L97/02C08L2205/025C08L2205/03C08L2205/035C08L23/0815C08L91/00C08K7/26C08K5/10C08K3/34C08K5/053C08L51/06C08K3/346
Inventor 殷正福孙星星晏伟
Owner JIANGSU JINHE HI TECH
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