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Thermoplastic resin composition with inorganic substance powder blended therein, and molded article

A thermoplastic resin and inorganic substance technology, applied in the field of thermoplastic resin compositions and molded products, can solve the problems that the mechanical properties of the surface state of molded products cannot be improved, and uneven distribution is not considered, so as to achieve good mechanical properties and suppress The effect of uneven distribution

Active Publication Date: 2021-10-08
TBM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the technology disclosed in each of the above-mentioned patent documents, calcium carbonate particles, particularly heavy calcium carbonate particles, are not considered to be highly filled to a thermoplasticity as an inorganic substance powder. The problem of uneven distribution in the case of resin, and even if it is applied based on the conditions disclosed in each patent document, it is impossible to achieve the desired improvement such as improving the uniformity of the surface state of the molded product and improving the mechanical properties.

Method used

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  • Thermoplastic resin composition with inorganic substance powder blended therein, and molded article
  • Thermoplastic resin composition with inorganic substance powder blended therein, and molded article

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0156] The polypropylene homopolymer A1 was used as the thermoplastic resin (A) and the above-mentioned B2 and B6 were used as the inorganic substance powder (B) at the mixing ratio shown in Table 1. As an antistatic agent, a lubricant, and an antioxidant material, the above-mentioned D, E, F1, and F2 were used in appropriate amounts, respectively, so that the total amount was 6.0 parts by mass. Except for Example 5, the mixing amounts of the antistatic agent, lubricant, and antioxidant were the same in other Examples and Comparative Examples shown below. In addition, the numerical value of each component in Table 1 is the value of mass parts. Each component was put into an extrusion molding machine equipped with a twin-screw screw (T-die extrusion molding device manufactured by Toyo Seiki Seisakusho ( L / D = 25), kneading at 200°C, extrude the kneaded raw material and 220°C (mold temperature) from a T-die into a sheet, and use Toyo Seiki's film / sheet recycling machine to tak...

Embodiment 2～10、 comparative example 1～6

[0159] The types and contents of each component in the thermoplastic resin composition were changed in the same manner as in Example 1 except that the types and contents of each component in the thermoplastic resin composition were changed according to the following Table 1. Sheets with a wall thickness of 200 μm were produced and their properties were evaluated. The obtained results are shown in Table 2.

[0160] 【Table 1】

[0161]

[0162] 【Table 2】

[0163]

[0164] According to the results in Table 2, in the examples of the present invention, when the mixing amount of the inorganic substance powder is high, the inorganic substance powder can be uniformly added to the resin component to avoid uneven distribution, and extrusion can be performed normally and stably. After molding, the obtained molded product has an excellent appearance and a molded product with good mechanical properties can also be obtained.

Embodiment 20

[0166] The thermoplastic resin composition containing the inorganic substance powder having the same composition as in Example 1 was formed into a sheet using a twin-screw extruder at a temperature of 220° C. using a T-die, and then further formed into a deep disc shape at a temperature of 220° C. Vacuum forming of container bodies. As a result, similar to the case of the above-mentioned Example 1, it is possible to manufacture a container body having sufficient mechanical properties and having a good appearance while avoiding occurrence of defects during processing.

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Abstract

Provided are: a thermoplastic resin composition in which inorganic substance powder is blended therein and a molded article obtained using the thermoplastic resin composition, in which uneven distribution of the inorganic substance powder is suppressed even when the thermoplastic resin is highly filled with the inorganic substance powder, and which is suitable for manufacturing a molded article which has a good appearance and mechanical characteristics. The thermoplastic resin composition and the molded article are characterized in that in the thermoplastic resin composition containing the inorganic substance powder, the mass ratio of the thermoplastic resin and the inorganic substance powder is 50:50 to 10:90, the inorganic substance powder comprises calcium carbonate particles, the calcium carbonate particles include at least two particle groups having different average particle diameters, and the average particle diameters of the particle groups are all in the range of 0.7 [mu]m to 6.0 [mu]m.

Description

technical field [0001] The present invention relates to a thermoplastic resin composition containing inorganic substance powder and a molded article. In detail, the present invention relates to a thermoplastic resin composition containing a high content of inorganic substance powder, which can suppress uneven distribution of inorganic substance particles even if the thermoplastic resin is highly filled with inorganic substance powder, and is suitable for manufacturing molded articles with good appearance and mechanical properties. Articles and molded articles using the thermoplastic composition. Background technique [0002] In the past, thermoplastic resins have been widely used as materials for various molded products for industry and household use, food packaging, and molded packaging for general goods, etc., together with paper materials derived from forest resources, but environmental protection has become an international issue today. , while seeking non-toxic, recycl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/02C08L101/00C08K3/26
CPCC08K3/26C08K2003/265C08K2201/003C08K2201/014C08L23/12C08L23/06C08L101/00C08K2201/005C08K2201/016
Inventor 中村宏水野英二山口太一
Owner TBM
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