Polyvinyl chloride low temperature toughening modifier and polyvinyl chloride mixture containing same

A toughening modifier, polyvinyl chloride technology, applied in the field of polyvinyl chloride modifier, to achieve the effect of increasing the elongation at break, broadening the scope of use, and improving the competitiveness of the industry

Inactive Publication Date: 2016-06-22
SHANDONG RIKE PLASTIC RUBBER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The first technical problem to be solved by the present invention is to provide a polyvinyl chloride low-temperature toughening modifier with high hardness and tensile strength and high elongation, which can basically not affect the Under the premise of the hardness and tensile strength of PVC, the elongation at break of PVC hard products is greatly improved to solve the problems existing in the prior art

Method used

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  • Polyvinyl chloride low temperature toughening modifier and polyvinyl chloride mixture containing same
  • Polyvinyl chloride low temperature toughening modifier and polyvinyl chloride mixture containing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] In a 24-cubic reactor equipped with a stirring paddle, add 0.25 parts of methyl methacrylate / acrylic acid copolymer soluble in water as a dispersant, and add 0.24 parts of polyoxyethylene lauryl ether as an emulsifier, Add water then, make total water consumption and all auxiliary raw materials be 250 parts, add the number average molecular weight (Mn) of 30 parts again and be 42,000, molecular weight distribution (Mw / Mn=4.0), particle diameter D 50 100 micron high-density polyethylene, after the temperature of the reaction material rises to 80°C under stirring, 18 parts of chlorine gas is introduced at a rate of 18 parts / hour, and then the temperature is raised to 135°C while the chlorine gas is passed through, and the temperature is raised. The time was 1 hour, and the heating and chlorine gas flow were carried out at the same time. After the reaction temperature reached 135° C., the temperature was kept at 135° C., and the remaining 18 parts of chlorine gas were fed a...

Embodiment 2

[0049] Add water in the 24 cubic reactor that stirring paddle is housed, the polymethyl methacrylate / acrylic acid copolymer dispersion agent of 0.1 part, the initiator of 0.05 part, use total water consumption and all auxiliary raw materials, be 250 parts , then add 30 parts of sample 1, stir the temperature of the reaction material to 80°C, then add 3 parts of butyl acrylate and 3 parts of methyl methacrylate, keep the temperature at 80-85°C, and react for 3 hours , cooled to below 40°C, centrifuged, and dried to obtain a rubber powder (sample 2) with an elongation at break of 1150%, a hardness of 53.2, and a tensile strength of 9.2. The conversion rate of the reaction was 99.3%, and the particle size of the powder was 310 microns.

Embodiment 3

[0051] In a 24-cubic reactor equipped with a stirring paddle, add 0.25 parts of methyl methacrylate / acrylic acid copolymer dissolved in water as a dispersant, and add 0.24 parts of polyoxyethylene lauryl ether as an emulsifier, Add water then, make total water consumption and all auxiliary raw materials, be 250 parts, add the Mn of 30 parts again and be 35,000, Mw / Mn=3.6, particle diameter D 50 100 micron high-density polyethylene, after the temperature of the reaction material rises to 80°C under stirring, 18 parts of chlorine gas is introduced at a rate of 18 parts / hour, and then the temperature is raised to 135°C while the chlorine gas is passed through, and the temperature is raised. The time was 1 hour, and the heating and chlorine gas flow were carried out at the same time. After the reaction temperature reached 135° C., the temperature was kept at 135° C., and the remaining 18 parts of chlorine gas were fed at a rate of 18 parts per hour. Then keep temperature between 1...

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Abstract

The invention discloses polyvinyl chloride low temperature toughening modifier and a polyvinyl chloride mixture containing the same. The low temperature toughening modifier is rubber powder with the elongation at break being 1000-1600%, hardness being greater than 53.0%, and tensile strength being greater than 9.0; the polyvinyl chloride mixture comprises, by weight, 100 parts of polyvinyl chloride resin, 1-30 parts of the low temperature toughening modifier, 0.5-5 parts of a stabilizing agent, 0-50 parts of filler, 0-50 parts of wood powder, 0-10 parts of acrylic polymer, 0-20 parts of shock-resistant modifier, 0-5 parts of lubricant and 0-10 parts of pigment. When PVC is modified by the low temperature toughening modifier, on the premise that hardness and tensile strength of the PVC are basically not influenced, the elongation at break of a hard PVC product can be remarkably improved.

Description

technical field [0001] The invention relates to the technical field of polyvinyl chloride modifiers, in particular to a polyvinyl chloride low-temperature toughening modifier. Background technique [0002] Generally speaking, polyvinyl chloride (PVC) resin has the following disadvantages: 1. Poor processability; 2. Poor low-temperature impact strength; 3. Poor thermal stability; 4. Poor low-temperature toughness. People have invented a variety of methods to improve the shortcomings of PVC, for example: people have invented processing aids to improve the processing performance of PVC; invented impact modifiers to improve the low temperature impact performance of PVC; invented heat stabilizers to improve PVC In order to improve the thermal stability of PVC, a low-temperature toughening modifier with high elongation at break was invented to improve the low-temperature toughness of PVC (such as patent documents: application number 201210129071.2; application number 201310169266....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F8/22C08F110/02C08F255/02C08F220/18C08F220/14C08L27/06C08L23/28C08L51/04C08K13/02C08K3/22C08K3/26C08K5/098
CPCC08F8/22C08F255/023C08L27/06C08L2205/035C08F220/1808C08F220/1804C08F110/02C08L23/286C08L91/06C08L23/06C08K13/02C08K2003/265C08K2003/2237C08K5/098C08L51/04C08F220/14C08F255/02C08K3/22C08K3/26C08L23/28
Inventor 路恩斌徐峰边增和
Owner SHANDONG RIKE PLASTIC RUBBER TECH CO LTD
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