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Water foaming injection method using superabsorbent resin as carrier

A technology of superabsorbent resin and water foaming, applied in the field of processing and manufacturing of polymer materials, can solve the problems of limited water-carrying capacity of activated carbon, difficulty in controlling the color of products, and easy adsorption to the periphery of equipment, etc., to reduce equipment operating costs, The effect of reducing the internal stress of the product and the process of water absorption is simple and rapid

Active Publication Date: 2017-05-17
广州市科迩曼塑料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the water-carrying capacity of activated carbon is very limited, and the injection time of water is relatively long, otherwise the injection process needs to be pressurized, which also increases the investment in related equipment. In addition, activated carbon itself is a black powder, which brings difficulties to the control of product color

Method used

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  • Water foaming injection method using superabsorbent resin as carrier
  • Water foaming injection method using superabsorbent resin as carrier
  • Water foaming injection method using superabsorbent resin as carrier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] PP (polypropylene) is used as the material to be processed, and LDPE is used as the base material. Among them, the PP used is domestic commercially available T30S with a melt flow index of 3.2g / 10min (230°C, 21.6N), and the LDPE used is domestically available commercially available 951-000 with a melt flow index of 2.18g / 10min .

[0043] First, the carrier masterbatch is manufactured. Dry the superabsorbent resin in a drying oven at 50°C for half an hour to remove water, and then weigh the raw materials according to the following weights: superabsorbent resin: 0.1kg, LDPE: 0.9kg, the mass ratio of the two is 1:9. After the superabsorbent resin and LDPE raw materials were mixed and placed in a humid environment for 24 hours, the weight was said to be 1002g. Then the mixed material is passed through an ordinary plastic extruder to obtain a carrier masterbatch, and the melt temperature is controlled to be 160°C during the extrusion process; the prepared carrier masterbat...

Embodiment 2

[0050] PP is used as the material to be processed, and LDPE is used as the base material. Among them, the PP used is domestic commercially available T30S with a melt flow index of 3.2g / 10min (230°C, 21.6N), and the LDPE used is domestically available commercially available 951-000 with a melt flow index of 2.18g / 10min .

[0051] First, the carrier masterbatch is manufactured. Dry the superabsorbent resin in a drying oven at 50°C for half an hour to remove possible moisture, and then weigh the raw materials according to the following weights: superabsorbent resin: 0.05kg, LDPE: 0.95kg, the mass ratio of the two is 1 :19. After the superabsorbent resin and LDPE raw materials were mixed and placed in a humid environment for 48 hours, the weight was said to be 1001.3g. Then the mixed material is passed through an ordinary plastic extruder to obtain a carrier masterbatch, and the melt temperature is controlled to be 160°C during the extrusion process; the prepared carrier master...

Embodiment 3

[0057] PP is used as the material to be processed, and LDPE is used as the base material. Among them, the PP used is domestic commercially available T30S with a melt flow index of 3.2g / 10min (230°C, 21.6N), and the LDPE used is domestically available commercially available 951-000 with a melt flow index of 2.18g / 10min .

[0058] First, the carrier masterbatch is manufactured. Dry the superabsorbent resin in a drying oven at 50°C for half an hour to remove possible moisture, and then weigh the raw materials according to the following weights: superabsorbent resin: 0.05kg, LDPE: 0.95kg, the mass ratio of the two is 1 :19. After the superabsorbent resin and LDPE raw materials were mixed and placed in a humid environment for 24 hours, the weight was said to be 1001g. Then the mixed material is passed through an ordinary plastic extruder to obtain a carrier masterbatch, and the melt temperature is controlled to be 160°C during the extrusion process; the prepared carrier masterba...

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Abstract

The invention discloses a water foaming injection method by using a super absorbent resin as a carrier. The method comprises the following steps: (1) the super absorbent resin is dried; (2) a thermoplastic plastic is selected as a basal body material; and after the thermoplastic plastic is mixed with the super absorbent resin, a little water is added; (3) uniform carrier master batches are prepared through a plastic extruder; (4) the carrier master batches are dried; (5) distilled water is sprayed and added into the carrier master batches to form water-carried master batches; (6) the water-carried master batches are added in a polymer raw material to be processed for uniform mixing to prepare a second mixed material; and (7) the second mixed material is added in a plastic injector to produce a foaming injection product. In the water foaming injection method by using the super absorbent resin as the carrier provided by the invention, water is easy to obtain; the control of water quantity can be conveniently realized through the use of the high absorbent resin; the foaming degree is easy to control; the processing temperature range of applicable materials is wide; and the method has such characteristics as economy, convenience and wide applicability.

Description

technical field [0001] The invention belongs to the technical field of processing and manufacturing of polymer materials, and in particular relates to a water foaming injection method using a superabsorbent resin as a carrier. Background technique [0002] In recent years, due to the advantages of sound insulation, heat insulation, shock absorption and saving raw materials, polymer foam products have been widely used. Usually, the cells inside the foamed product are formed by the plastic raw material during the molding process or by adding some gas. According to the different types of cell formation and foaming agent, it can include chemical foaming, physical foaming and mechanical mixing foaming. These methods have their own strengths, but there are also corresponding limitations. For example: the chemical foaming method utilizes the thermal decomposition of the chemical foaming agent to generate gas to form a large number of cells inside the product to achieve the purpos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C44/04B29C44/42B29C44/60B29B9/10B29B15/00B29K23/00
Inventor 周应国吴文斌
Owner 广州市科迩曼塑料科技有限公司
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