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Polyvinyl chloride mixture with excellent impact resistance and processing performance

A processability, polyvinyl chloride technology, applied in the field of polyvinyl chloride mixture, can solve the problem of unsatisfactory resin toughening effect, and achieve the effect of low impurity content

Inactive Publication Date: 2010-07-28
SHANDONG RIKE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The above-mentioned patents respectively proposed the processes of impact modifier latex synthesis and post-treatment process from different angles, but their shortcomings are mainly reflected in the unsatisfactory toughening effect of the synthesized resin

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] This embodiment is a specific process for preparing the polyvinyl chloride mixture.

[0047] (1) Synthesis of rubber core latex: Add 100 parts by weight of water, 60 parts by weight of butadiene, 0.5 parts by weight of methacrylic acid ene in a stainless steel reactor equipped with agitator, thermocouple and butadiene pipeline Propyl ester, 0.1 weight part of dicumyl hydroperoxide, 0.002 weight part of ferrous sulfate, 0.1 weight part of white block, 0.5 weight part of sodium dodecylbenzenesulfonate, 0.008 weight part of EDTA , Nitrogen was passed through the reaction kettle and the temperature was raised to 65° C., and the reaction was carried out for 10 hours under stirring, the conversion rate of polymerization reached 96%, and the particle diameter of the seed latex was 80 nm.

[0048] (2) Synthesis of core-shell graft copolymer

[0049] equipped with a thermometer, N 2 In the four-necked flask of pipeline and agitator, add the latex that contains 100 parts by wei...

Embodiment 2～ Embodiment 6

[0062] The synthesis methods and processes of Examples 2 to 6 are the same as those of Example 1, and the composition of the core and shell in the new impact modifier is also the same. The difference from Example 1 is that in the synthesis of the new impact modifier core elastomer, the content of the core is different, that is to say, the content of the rubber core is different.

[0063] The formula and result of embodiment 2~embodiment 6 are shown in table 1.

Embodiment 7

[0072] This example is an example of preparing a new type of impact modifier and polyvinyl chloride mixture, in order to further illustrate the present invention.

[0073] (1) Synthetic of rubber core latex: add the water of 100 parts by weight, the butadiene of 45 parts by weight, the styrene of 15 parts by weight in the stainless steel reactor that stirrer, thermocouple and butadiene pipeline are housed, 0.5 parts by weight The divinylbenzene of weight part, the tertiary butyl hydroperoxide of 0.1 weight part, the ferrous sulfate of 0.002 weight part, the hanging white block of 0.1 weight part, the sodium dodecylbenzenesulfonate of 0.5 weight part, 0.008 weight part After part of EDTA, pass N in the reactor 2 And the temperature was raised to 65° C., and the reaction was carried out for 10 hours under the reduced state, and the conversion rate of the polymerization reached 96%. The particle diameter of the seed latex is 80 nm.

[0074] (2) Synthesis of core-shell graft cop...

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Abstract

The invention discloses a polyvinyl chloride mixture with excellent impact resistance and processing performance. The mixture comprises the following raw materials in part by weight: 80 to 99 parts of polyvinyl chloride and 1 to 20 parts of novel impact modifier, wherein the sum of the weigh parts of the polyvinyl chloride and the novel impact modifier is 100. The novel impact modifier is a core-shell graft copolymer consisting of the following components in percentage by weight: 60 to 95 percent of rubber core and 5 to 40 percent of shell, wherein the rubber core is obtained by copolymerizing a mixture consisting of butadiene and a C-C double bond-containing compound and a cross-linking agent containing two or more C-C double bonds; and the shell is obtained by copolymerizing a mixture of acrylate ester compounds and a monomer containing a C-C double bond-containing compound or a mixture of the C-C double bond-containing compound. The polyvinyl chloride mixture can be widely applied to PVC profiled bars, PVC pipes, PVC plates and sheets and the like.

Description

technical field [0001] The invention relates to a polyvinyl chloride mixture, in particular to a polyvinyl chloride mixture with excellent impact resistance and processability. Background technique [0002] Polyvinyl chloride (PVC) resin has poor processing and forming properties, so processing aids must be added during processing to improve its processing properties; the impact strength of products after processing and forming PVC is poor, and people have invented a variety of anti-corrosion Impact modifier to improve the impact strength of PVC products. [0003] One such impact modifier is chlorinated polyvinyl chloride (CPE). CPE is widely used in the impact modification of non-plasticized PVC products due to its low price. However, due to the low glass transition temperature of CPE and poor impact resistance, a large amount of CPE must be added to meet the requirements of use. Because CPE is a kind of rubber, the addition of a large amount of CPE will greatly damage th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L51/04C08K13/02C08F279/02C08J3/12
Inventor 赵东日
Owner SHANDONG RIKE CHEM
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