Manufacturing method of resin composition
A technology of resin composition and manufacturing method, which is applied in the field of resin composition manufacturing, can solve problems such as inability to supply, supply exceeding the delivery capacity of powder-like reinforcing agent, accumulation, etc., and achieve the effect of stable supply
Active Publication Date: 2022-04-12
ASAHI KASEI KK
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Problems solved by technology
Therefore, the following situation may occur: the supply amount exceeds the conveying capacity of the powdery reinforcing agent, and the powdery reinforcing agent may accumulate in the hopper of the side feeder and cannot be supplied.
Method used
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Examples
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Effect test
Embodiment 1～8、 comparative example 1～4
[0171] [Examples 1 to 8, Comparative Examples 1 to 4, Reference Examples 1 and 2]
[0172] As an extruder used for the manufacture of the resin composition of each example, a twin-screw extruder (trade name "TEM58SS", manufactured by Toshiba Machine Co., Ltd.) was used. The number of barrels of this twin-screw extruder is 12 blocks, and in the flow direction of the raw material, the first barrel is provided with an upstream supply port, the sixth barrel is provided with a downstream supply port 1, and the ninth barrel is provided with Set the downstream supply port 2, the 8th barrel is set with a liquid filling pump, and the 11th barrel is set with a vacuum exhaust port. In addition, the method of supplying a raw material to the downstream supply port 1 and the downstream supply port 2 was the method of supplying using the side feeder, and the screw rotation speed of each side feeder was 300 rpm.
[0173] The screws of the side feeders used are listed in Table 1. It should b...
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Abstract
The present invention relates to a method for producing a resin composition capable of stably supplying a powdery reinforcing agent even when the supply amount of the powdery reinforcing agent is large. The present invention is a method for producing a resin composition using an extruder, characterized in that the extruder has an upstream supply port and a downstream supply port connected with a side feeder, and the side feeder has a side feed screw and a side feed barrel, and feeds from the upstream The port supplies the first supply raw material containing (a) powdery polyphenylene ether resin, and the second supply raw material containing (b) powdery reinforcing agent is supplied from the downstream supply port, and the supply amount of the first supply raw material is relative to the raw material 100% by mass is 30 to 60% by mass, 50 to 90% by mass of (a) powdery polyphenylene ether resin is contained in 100% by mass of the first supply raw material, and (b) powder is supplied from one downstream supply port The supply amount of the reinforcing agent is 15 to 35% by mass relative to 100% by mass of the raw material, (b) the bulk density of the powder reinforcing agent is 0.8g / mL or less, and the side feeding screw is single tooth and double screw.
Description
technical field [0001] The present invention relates to a method for producing a resin composition. Background technique [0002] Usually, for a composite material of a resin containing a powdery reinforcing agent, the powdery reinforcing agent is mixed with the resin by an extruder, pelletized, and then used for product production by a molding machine. In the extruder for manufacturing the composite material, the resin is fed from the upstream supply port, the resin is melted in the first kneading zone, and the powder-like reinforcing agent is injected from the side feeder, and the reinforcing agent is mixed with the molten resin in the second kneading zone. The resin is mixed. [0003] Since the gas is entrained when the powdery reinforcing agent is supplied to the extruder, the transfer capability when supplied from the side feeder to the extruder is often insufficient. Therefore, there may be a case where the supply amount exceeds the conveying capacity of the powdery ...
Claims
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IPC IPC(8): B29B7/48B29C48/52C08L71/12C08L25/06C08K13/04C08K7/14C08K7/00C08K3/34
CPCB29B7/48B29C48/52B29C48/625C08L71/123C08L25/06C08K13/04C08K7/00C08K3/34C08K7/14
Inventor 吉田浩一郎大田佳生
Owner ASAHI KASEI KK