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Radiated crosslinking PVC (Polyvinyl Chloride) rigid foaming material

A foaming material and PVC resin technology, applied in the field of PVC rigid foaming material and its preparation, can solve the problems of complex production process, harsh production process requirements and high equipment requirements of cross-linked PVC foam, and achieve light weight and uniform distribution , the effect of uniform cell distribution

Active Publication Date: 2010-09-08
FSPG HI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production process in this method is complex and requires high equipment; because in this method, PVC needs to rely on the network structure of polyurethane to achieve cross-linking structure, which makes the production process of cross-linked PVC foam very difficult. Complicated, first of all, it is difficult to realize polyurethane to produce a penetrating network structure, which requires pretreatment of polyurethane, and then evenly inserting PVC into the penetrating network structure. The entire production process is demanding and requires sophisticated equipment. At the same time, the complex process and the addition of polyurethane in the raw materials greatly increase the cost of the product

Method used

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  • Radiated crosslinking PVC (Polyvinyl Chloride) rigid foaming material
  • Radiated crosslinking PVC (Polyvinyl Chloride) rigid foaming material

Examples

Experimental program
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Effect test

Embodiment 1

[0043] Present embodiment carries out batching as follows formula:

[0044]

[0045] (1) After measuring the raw materials in the above formula, preliminarily mix the raw materials on a high-speed mixer at room temperature, and then add them to the double-roller kneader for 5-15 minutes at 150-170°C to make the mixture material;

[0046] (2) Place the mixed material in a flat vulcanizer to form a tablet, and then irradiate it with an electron beam. The irradiation dose is 20-1000kGy; the irradiation speed is controlled at 10-20m / min;

[0047] (3) Put the irradiated PVC sheet into the oil bath, set the temperature of the oil bath at 180-200°C, and the treatment time is 5-20 minutes, so that it can be foamed at the corresponding process temperature; after the sheet is foamed , can be sent to the packaging process to be cut into products of specified size, and its performance is subject to random inspection or full inspection of all items required by the standard.

[0048] I...

Embodiment 2

[0050] Present embodiment carries out batching as follows formula:

[0051]

[0052] (1) After measuring the raw materials in the above formula, preliminarily mix the raw materials on the high mixer at room temperature, and then add them to the double-roller kneader for 5-15 minutes at 120-170°C to make the mixture material;

[0053] (2) Put the above-mentioned mixed materials in a flat vulcanizer and press them into tablets, and then irradiate them with electron beams. The irradiation dose is 20-100kGy; the irradiation speed is controlled at 10-20m / min;

[0054] (3) Put the irradiated PVC sheet into the oil bath, set the temperature of the oil bath at 170-200°C, and the treatment time is 5-20min, so that it can be foamed at the corresponding process temperature; after the sheet is foamed , can be sent to the packaging process to be cut into products of specified size, and its performance is subject to random inspection or full inspection of all items required by the stand...

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Abstract

The invention discloses a PVC (Polyvinyl Chloride) rigid foaming material and a preparation method thereof. The PVC rigid foaming material has a crosslinking structure formed by the PVC self and does not have the crosslinking structure formed by network systems of other high polymers. The PVC rigid foaming material is formed by heating and foaming a blending modified PVC resin and various auxiliary agents after electron irradiation. Because the PVC forms the crosslinking structure per se by an irradiation method, the network structure of other polymer systems is not needed to be introduced, thereby reducing material costs, simplifying production process and improving production efficiency.

Description

technical field [0001] The invention relates to a PVC rigid foaming material and a preparation method thereof. More specifically, the invention relates to a PVC rigid foaming material which uses electron irradiation to make PVC itself form a cross-linked structure and a preparation method thereof. Background technique [0002] Several techniques have been disclosed in the prior art for the production of foamed polymeric materials by means of radiation crosslinking. [0003] For example, Chinese patent 00129762.7 discloses a radiation-crosslinked foamed polypropylene material and its preparation method. This patent uses radiation-resistant polypropylene or a blend of radiation-resistant polypropylene and polyethylene as the matrix resin. Under low irradiation dose, the foamed polypropylene material with high expansion ratio is prepared, and the expansion ratio of the foamed material is 4-30. [0004] Chinese patent 01107185.0 discloses a method for preparing linear low-densi...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08J3/28C08J3/24C08J9/10C08K5/12C08K5/101C08K5/29
Inventor 李永鸿陈广建赵照陈晓尚
Owner FSPG HI TECH
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