A kind of graphene montmorillonite filled ethylene-vinyl acetate nanomaterial and preparation method thereof
A vinyl acetate and nanomaterial technology, applied in the field of polymer materials, can solve the problems of small size, difficulty in toughening and strengthening, and large filling amount.
Active Publication Date: 2020-07-07
SHANGHAI KINGFA SCI & TECH +1
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Problems solved by technology
However, as a new type of material, the application of nanomaterials in the field of plastics is still lacklustre.
The biggest technical bottleneck restricting the application of nanomaterials in plastics is that it is difficult to achieve good distribution and uniform dispersion of nanomaterials in plastics
Ethylene-vinyl acetate is a commonly used general-purpose plastic, which has the advantages of low density, good chemical resistance, and low price. However, since ethylene-vinyl acetate is a non-polar polymer material, and nanomaterials are polar High and small in size, it is usually difficult to achieve good dispersion in ethylene-vinyl acetate; while using common fillers to fill ethylene-vinyl acetate, the filling amount is large and it is difficult to toughen and strengthen at the same time
Method used
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Embodiment 1-4
[0031] Step 1: Prepare raw materials according to the components and parts by weight in Table 1.
[0032] Step 2: Weigh graphene, montmorillonite, maleic anhydride grafted ethylene-vinyl acetate, and polyrotaxane according to the amounts in Table 1 and place them in an internal mixer, and banbury at a temperature of 150-200°C 10min, obtain polyrotaxane / graphene / montmorillonite composite;
[0033] Step 3: Weigh ethylene-vinyl acetate, phenolic heat stabilizer and processing aid respectively according to the amounts in Table 1, and combine the weighed ethylene-vinyl acetate, phenolic heat stabilizer, processing aid and step The polyrotaxane / graphene / montmorillonite composite prepared in the second is dropped into a twin-screw extruder together to melt, mix, disperse and extrude granulation to obtain graphene montmorillonite filled ethylene-vinyl acetate nanomaterials, The aspect ratio of the twin-screw extruder is 40-45:1 and the temperature of each section of the twin-screw ex...
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Abstract
The invention discloses a graphene and montmorillonite filled ethylene-vinyl acetate nano material which is prepared from the following components in parts by weight: 60 to 95 parts of ethylene-vinylacetate, 1 to 10 parts of polyrotaxane, 0.5 to 10 parts of graphene, 0.5 to 10 parts of montmorillonite, 0 to 20 parts of a compatibilizer, 0.3 to 2 parts of a thermal stabilizer and 0.2 to 2 parts ofa processing agent. According to the graphene and montmorillonite filled ethylene-vinyl acetate nano material, by the adding of the graphene, the montmorillonite and the polyrotaxane, mutual effectsof the graphene, the montmorillonite and the polyrotaxane realizes well dispersion among the graphene, the montmorillonite and the polyrotaxane, so that the ethylene-vinyl acetate nano material has enhancing, toughening and flame retarding effects.
Description
technical field [0001] The invention relates to the field of polymer materials, in particular to a graphene montmorillonite filled ethylene-vinyl acetate nanometer material and a preparation method thereof. Background technique [0002] Nanomaterials are new materials developed in the 21st century. They refer to materials that have at least one dimension in the three-dimensional space that is in the nanometer size (0.1-100nm) or consists of them as basic units, which is approximately equivalent to 10-100 atoms. Scales lined up together. The most common nanomaterials include fullerenes, carbon nanotubes, graphene, montmorillonite, nano-silica, nano-titanium dioxide, etc. In recent years, nanomaterials have been widely used in semiconductors, nanoceramics, biomedicine, life sciences, nanocatalysis, nanosensors and other fields. However, as a new type of material, the application of nanomaterials in the field of plastics is still lacklustre. The biggest technical bottleneck ...
Claims
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IPC IPC(8): C08L23/08C08L87/00C08L51/06C08K13/02C08K3/04C08K3/34
CPCC08K2201/016C08L23/0853C08L2201/02C08L2205/03C08L87/00C08L51/06C08K13/02C08K3/04C08K3/346
Inventor 卢先博袁绍彦杜赏倪梦飞陈延安夏建盟王琦玲
Owner SHANGHAI KINGFA SCI & TECH