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Composite resin particles and manufacturing method thereof

A technology of composite resin and manufacturing method, which is applied in the field of composite resin particles and its manufacturing, and can solve problems such as increased packaging weight, shedding, and increased deflection

Active Publication Date: 2016-10-12
JSP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in recent years, as the size of the panel has increased, the weight of the packaging has also increased, and when a foamed particle molded product containing propylene resin is used as a packaging container, there has been a problem of increased deflection in the packaged state.
If the deflection during packaging is large, the both ends of the packaged container may fall off when supported by a transfer machine, etc., and the liquid crystal panel may be damaged due to the deflection.

Method used

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  • Composite resin particles and manufacturing method thereof
  • Composite resin particles and manufacturing method thereof
  • Composite resin particles and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0103] Hereinafter, the composite resin particles and their production methods according to the examples will be described.

[0104]The composite resin particles of this example are composite resin particles in which a composite resin obtained by impregnating and polymerizing a styrene-based monomer into a vinyl resin is used as a base resin. That is, the composite resin contains a styrene-based resin component obtained by polymerizing a vinyl-based resin component and a styrene-based monomer. Based on 100 parts by mass of the vinyl resin in the composite resin particles, the content of the structural unit derived from the styrene-based monomer was 574 parts by mass. The content of the styrene-based monomer existing as a monomer in the composite resin particles was 150 mass ppm. Content ratio W of xylene-insoluble components in composite resin particles XY 6% by mass. Hereinafter, the manufacturing method of the composite resin particle of this example is demonstrated. Fur...

Embodiment 2

[0152] This example and Example 3 described later are examples in which the type of organic peroxide B used as a polymerization initiator is changed. Specifically, composite resin particles, expanded particles, and expanded particle shaped bodies were prepared in the same manner as in Example 1, and various evaluations were performed, except that 0.86 g of tert-hexyl peroxyisopropyl monocarbonate was used (Specifically, "PERHEXYL I" manufactured by NOF Corporation) as the organic peroxide B.

Embodiment 3

[0154] In this example, composite resin particles, expanded particles, and expanded particle shaped bodies were prepared in the same manner as in Example 1, and various evaluations were performed, except that 0.86 g of di-tert-hexyl peroxide (specifically "PERHEXYL D" manufactured by NOF Corporation) was used as the organic peroxide B.

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Abstract

A project of the invention provides composite resin particles and a manufacturing method thereof. Through the composite resin particles, a foamed particle molded article which has good internal fusion, compression rigidity and flexibility resistance, and which can be protected from being broken due to deformation is obtained. The foamed particle molded article has less styrene monomer left, has good foaming ability during foaming, and has excellent forming property during forming. The project is solved by providing composite resin particles (1) taking a composite resin which is made by impregnating a polystyrene monomer in an ethylene resin as a basic resin and a manufacturing method of the composite resin particles (1). The composite resin comprises 100-900 parts by mass of a structural unit deriving from a styrene monomer based on 100 parts by mass of the ethylene resin. The content of the styrene monomer existing as a monomer in the composite resin particles is 0-500 ppm by mass. The ratio WXY of a xylene insoluble component in the composite resin particles (1) is 0-40% by mass. During manufacturing of the composite resin particles, two polymerization initiators with different 10 h half-life period temperatures are adopted.

Description

technical field [0001] The present invention relates to composite resin particles using a composite resin obtained by impregnating and polymerizing a styrene-based monomer in vinyl resin as a base resin and a method for producing the same. Background technique [0002] The foamed particle molded body exhibits excellent properties such as cushioning properties, light weight, vibration resistance, sound insulation, and heat insulation, and is used in a wide range of applications such as packaging materials, building materials, and vehicle parts. The expanded bead molded body is obtained by fusing a plurality of expanded bead with each other in a molding die. In addition, foamed particles are made by heating resin particles impregnated with organic physical foaming agents such as propane, butane, and pentane, or resin particles impregnated with inorganic physical foaming agents such as carbon dioxide, nitrogen, and air. get. As the resin component constituting the expanded be...

Claims

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Application Information

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IPC IPC(8): C08F255/02C08F212/08C08F220/18C08F4/38C08J9/12
CPCC08F4/38C08F255/02C08J9/122C08J2203/06C08J2351/06C08F220/1804
Inventor 及川政春西岛浩气岛昌臣
Owner JSP CORP
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