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.
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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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