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Modified cold resistant polyvinyl ethylene (PVC) soft plastic and preparation method thereof

A polyvinyl chloride and cold resistance technology, which is applied in the field of modified cold resistance soft polyvinyl chloride plastics and its preparation, can solve the problems of limited improvement effect of cold resistance, insignificant improvement of cold resistance, easy migration and precipitation, etc. Achieve remarkable cold resistance, good cold resistance, and the effect of expanding the scope of application

Inactive Publication Date: 2020-04-10
无锡邰某人材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, due to the poor cold resistance of PVC soft plastic products, the application of PVC materials in some aspects is limited. Therefore, physical blending is usually used to improve the cold resistance of PVC plastics by adding tougheners, or by adding cold resistance enhancers. Plasticizer method to improve the cold resistance of PVC soft plastic products
However, the method of adding a toughening agent has a very limited effect on improving the cold resistance of PVC plastics, and the method of adding a cold-resistant plasticizer to improve the cold resistance of PVC soft plastic products is due to the compatibility of general cold-resistant plasticizers with PVC plastics. Poor, there is the problem of easy migration and precipitation, its usage can only be 5%-15% of the main plasticizer, and the improvement of cold resistance is not obvious

Method used

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  • Modified cold resistant polyvinyl ethylene (PVC) soft plastic and preparation method thereof
  • Modified cold resistant polyvinyl ethylene (PVC) soft plastic and preparation method thereof
  • Modified cold resistant polyvinyl ethylene (PVC) soft plastic and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Modified cold-resistant polyvinyl chloride soft plastic, composed of the following raw materials according to weight fraction:

[0034]

[0035] The preparation method of the modified cold-resistant polyvinyl chloride soft plastic comprises the following steps:

[0036] (1) Preparation of PVC compound: Add PVC, calcium-zinc composite stabilizer, barium stearate, and stearic acid into the high-speed mixer in turn according to the formula ratio, stir for 2 minutes, heat up to 90°C, add DOP and stir 6 minutes, finally add calcium carbonate and stir for 3 minutes to make PVC mixture, discharge for subsequent use;

[0037] (2) Preparation of the mixture: according to the formula ratio, DCP and polyethylene glycol (200) dimethacrylate are mixed into a mixture;

[0038] (3) Feeding: the above-mentioned PVC compound is added with the feed rate of 85kg / h to the first feed port of the twin-screw extruder with 110r / min operating speed; the above-mentioned DCP and Polyethylene ...

Embodiment 2

[0045] Modified cold-resistant polyvinyl chloride soft plastic, composed of the following raw materials according to weight fraction:

[0046]

[0047] The preparation method of the modified cold-resistant polyvinyl chloride soft plastic comprises the following steps:

[0048] (1) Preparation of PVC compound: Add PVC, calcium-zinc composite stabilizer, barium stearate, and stearic acid into the high-speed mixer in turn according to the formula ratio, stir for 3 minutes, then heat up to 95°C, add DOP and stir 6 minutes, finally add calcium carbonate and stir for 3 minutes to make PVC mixture, discharge for subsequent use;

[0049] (2) Preparation of the mixture: according to the formula ratio, DCP and polyethylene glycol (200) dimethacrylate are mixed into a mixture;

[0050] (3) Feeding: the above-mentioned PVC compound is added with the feed rate of 85kg / h to the first feed port of the twin-screw extruder with 110r / min operating speed; the above-mentioned DCP and Polyethy...

Embodiment 3

[0057] Modified cold-resistant polyvinyl chloride soft plastic, composed of the following raw materials according to weight fraction:

[0058]

[0059]

[0060] The preparation method of the modified cold-resistant polyvinyl chloride soft plastic comprises the following steps:

[0061] (1) Preparation of PVC compound: Add PVC, calcium-zinc composite stabilizer, barium stearate, and stearic acid into the high-speed mixer in turn according to the formula ratio, stir for 3 minutes, then heat up to 90°C, add DOP and stir 6 minutes, finally add calcium carbonate and stir for 3 minutes to make PVC mixture, discharge for subsequent use;

[0062] (2) Preparation of the mixture: according to the formula ratio, DCP and polyethylene glycol (200) dimethacrylate are mixed into a mixture;

[0063] (3) Feeding: the above-mentioned PVC compound is added with the feed rate of 85kg / h to the first feed port of the twin-screw extruder with 110r / min operating speed; the above-mentioned DCP ...

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Abstract

The invention discloses a modified cold resistant polyvinyl ethylene (PVC) soft plastic and a preparation method thereof. The soft plastic is composed of following raw materials in parts by weight: 100 parts of PVC resin, 50 to 55 parts of a plasticizer, 5 to 8 parts of a composite stabilizer, 0.8 to 1.0 part of stearic acid, 1.2 to 1.5 parts of barium stearate, 40 parts of a filling material, 0.3to 0.5 part of an initiator, and 8 to 10 parts of polyethylene glycol (200) dimethacrylate. A chemical modification method is adopted, during the PVC extrusion process, polyethylene glycol (200) dimethacrylate is introduced into the molecule chains of PVC, the grafted PVC soft plastic has a good cold resistant performance; the low temperature impact brittle temperature of the soft plastic can reach -52 DEG C; the cold resistant performance is strong; and the application range of the PVC soft plastic is enlarged.

Description

technical field [0001] The invention relates to the field of chemical engineering and to the field of polyethylene materials, in particular to a modified cold-resistant polyvinyl chloride soft plastic and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC) plastic is made of PVC resin as the base material, mixed with various additives such as stabilizers, plasticizers, fillers, etc., and processed through plastic molding, with good physical and mechanical properties. PVC plastic can be made into soft and hard products by adding the number of plasticizers. Therefore, PVC plastic can be divided into hard and soft. PVC soft plastic products are widely used in building materials, packaging materials, daily necessities, transportation, etc. various fields. [0003] However, due to the poor cold resistance of PVC soft plastic products, the application of PVC materials in some aspects is limited. Therefore, physical blending is usually used to impr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/00C08K13/02C08K5/09C08K5/098C08K3/26
CPCC08K13/02C08K5/09C08K5/098C08K3/26C08K2003/265C08L2201/08
Inventor 邰锡峰
Owner 无锡邰某人材料科技有限公司
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