Polymerization preparation method of similar nano inorganic powder material modified styrene resin

A styrenic resin and nano-inorganic technology, which is applied in the field of polymerization and preparation of styrenic resin modified by nano-inorganic powder materials to achieve the effects of good product performance, good flexibility and improved strength

Active Publication Date: 2014-11-19
GUANGDONG RASTAR SYNTHETIC MATERIAL COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to obtain better strength, the industry often uses inorganic powder materials to modify resins. At present, the modification method of inorganic materials is generally finished styrene-based resin particles and inorganic materials and additives to improve the interface between inorganic materials and resin bodies. Other materials adopt post-processing methods such as kneading by kneader, single-screw or twin-screw blending and extrusion modification, and there is no method of using polymerization modification to produce nano-scale inorganic powder materials modified styrene resin

Method used

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  • Polymerization preparation method of similar nano inorganic powder material modified styrene resin

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Experimental program
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Effect test

Embodiment 1

[0024] 3% by weight of mineral oil and 9% by weight of low cis polybutadiene rubber in the feed liquid are dissolved in 88% by weight of styrene monomer to prepare a rubber solution and then sent to the first stage as the feed liquid In a continuous stirred tank reactor, thermal initiation is used, and the polymerization is carried out at a reaction temperature of 115-130°C to reach a conversion rate of 30%, and then it is sent to the subsequent three stages of plug flow which gradually increases at a subsequent reaction temperature of 130-175°C. Reactor polymerization, in which the average particle size of 1% by weight of the feed liquid is 200nm barium sulfate, and the average particle size of 1% by weight of the feed liquid is 50nm of silicon oxide and 1% by weight of the feed liquid. Ethylene, mineral oil accounting for 1% by weight of the feed liquid, and ethylbenzene accounting for 1% by weight of the feed liquid are mixed into the second stage plug flow reactor, and the p...

Embodiment 2

[0026] The same reaction conditions as in Example 1, except that the average particle size of 1% by weight of the feed liquid is 200nm barium sulfate and the average particle size of 1% by weight of the feed liquid is 50nm of silica and the amount of silica Styrene with a liquid weight ratio of 1%, mineral oil with a weight ratio of 1% for the feed liquid, and ethylbenzene with a weight ratio of 1% for the feed liquid are mixed and added in the third-stage reactor. See Table 1 for specific physical properties.

Embodiment 3

[0028] The same reaction conditions and powder material addition time as in Example 1, except that the nano-inorganic powder material in Example 1 was changed to 4.9μm ultrafine kaolin and 10μm each accounting for 1% by weight of the feed liquid. Superfine talcum powder. See Table 1 for specific physical properties.

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Abstract

The invention provides a polymerization preparation method of similar nano inorganic powder material modified styrene resin. The polymerization preparation method is characterized in that a similar nano inorganic powder material for modification is added after phase transformation in the polymerization process of the styrene monomer.

Description

Technical field [0001] The invention relates to a polymerization preparation method of a nano-inorganic powder material modified styrene resin, in particular to a nano-inorganic powder material in a specific content during the polymerization reaction to further improve the strength of the resin, and obtain Polymerization method with better balance of strength, flexibility and better fluidity. technical background [0002] It is known that when styrene monomers are polymerized or polymerized with other reactive monomers such as other vinyl monomers, emulsion polymerization, suspension polymerization, solution polymerization or continuous bulk polymerization methods with a small amount of solvent are generally used. The continuous bulk polymerization method is more economical and environmentally friendly and is widely adopted in the industry. For example, documents CN1057102C / CN1269858C / CN1860151B / CN1145652C, etc. disclose polymerization methods that only involve rubber-modified s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F112/08C08F2/44C08K3/30C08K3/36C08K3/34C08L25/06
Inventor 陈雁升陈利杰
Owner GUANGDONG RASTAR SYNTHETIC MATERIAL COMPANY
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