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Resin composition, resin pellet, method for manufacturing resin pellet, and solar battery sealant

A technology of resin composition and resin particles, which can be used in circuits, photovoltaic power generation, electrical components, etc., and can solve problems such as particle adhesion.

Inactive Publication Date: 2014-04-30
SUMITOMO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Conventionally, there has been a problem that the particles stick to each other when storing, transporting, and processing the particles of sticky resin.

Method used

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  • Resin composition, resin pellet, method for manufacturing resin pellet, and solar battery sealant
  • Resin composition, resin pellet, method for manufacturing resin pellet, and solar battery sealant
  • Resin composition, resin pellet, method for manufacturing resin pellet, and solar battery sealant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0064] Below, the present invention is further described in detail through examples.

[0065] (experiment method)

[0066] The particle adhesion test and the measurement of physical properties in Examples and Comparative Examples were performed by the following methods.

[0067] 〔Particle adhesion test〕

[0068] Put 32g of sample particles into a plastic bag with a zipper of 60mm×85mm, and close the zipper. Next, in an atmosphere of 40°C, apply 900g / cm 2 After maintaining this state for 24 hours under a load of 5° C., this state was maintained for 24 hours. The load was then unloaded and the bags were kept at 23°C for 24 hours. Then, the bag was broken to take out the pellets, and the non-adhesiveness of the pellets was observed and evaluated based on the following criteria.

[0069] ○: No adhesion between particles

[0070] ×: 5 or more particles closely adhere to each other

[0071] 〔Volume intrinsic resistance (unit: Ω cm)〕

[0072] The pellets after the blocking te...

Embodiment 1

[0092]Using an autoclave reactor, under the conditions of reaction temperature 188-195°C, reaction pressure 180-185MPa, feed gas composition (ethylene: 63-68% by mass, vinyl acetate: 37-32% by mass), use peroxide - tert-butyl 2-ethylhexanoate was used as an initiator to synthesize ethylene-vinyl acetate copolymer. The obtained ethylene-vinyl acetate copolymer was pelletized using an extruder to obtain ethylene-vinyl acetate copolymer pellets. Put 32g of ethylene-vinyl acetate copolymer particles (32% by mass of structural units derived from vinyl acetate, MFR37g / 10min, molecular weight distribution 3.8, hereinafter referred to as EVA-1.) into a polyethylene bag 0.096g of metakaolin (Isoturaite MC-6, manufactured by Mizusawa Chemical Industry Co., Ltd., average particle diameter 6 μm) (with respect to 100 parts by mass of EVA-1, metakaolin is 0.3 parts by mass), stirred for 2 minutes, and then carried out the blocking test . The volume resistivity was measured using the resin...

Embodiment 2

[0094] Except having used 0.064g of metakaolin, it implemented similarly to Example 1 (metakaolin is 0.2 mass parts with respect to 100 mass parts of EVA-1). The evaluation results are shown in Table 1.

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Abstract

The present invention relates to a resin composition which contains an ethylene unsaturated ester copolymer, and metakaolin. The ethylene unsaturated ester copolymer comprises a structural unit derived from ethylene, and a structural unit derived from unsaturated ester. Assuming that the sum total of the structural unit derived from the ethylene and the structural unit derived from the unsaturated ester is 100 wt%, the structural unit derived from the unsaturated ester is between 20 wt% and 35 wt%. The resin composition of the present invention contains between 0.001 and 5 parts by mass of the metakaolin with respect to 100 parts by mass of the ethylene unsaturated ester copolymer.

Description

technical field [0001] The present invention relates to a resin composition, a resin particle, a method for producing the same, and a solar cell sealing material. Background technique [0002] Conventionally, there has been a problem of sticky resin particles sticking to each other during storage, transportation, processing, and the like. In order to solve this problem, a method of mixing a blocking preventing component with a resin is known. For example, Patent Document 1 describes a method of mixing rubber particles and a higher fatty acid or / and a salt thereof. Patent Document 2 describes a method for producing an ethylene-vinyl ester copolymer composition obtained by stirring an ethylene-vinyl ester copolymer and fillers such as organic powder, metal organic acid salt powder, and inorganic powder using a mixer. [0003] Patent Document 1: Japanese Patent Application Laid-Open No. 59-124829 [0004] Patent Document 2: Japanese Patent Laid-Open No. 2005-306959 Content...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08K3/34H01L31/048
CPCC08L23/0869H01L31/0481Y02E10/50C08K3/346C08L2203/204C08L23/0853C04B26/04C04B26/06C08K9/08B29B9/06B29B9/12C04B14/106C08L2203/206C08K3/34H01B3/447H01B3/448
Inventor 余田宏章
Owner SUMITOMO CHEM CO LTD
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