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Polyurethane rubber composition and preparation process thereof

A technology of polyurethane rubber and composition, applied in the field of degradable polyurethane rubber composition, can solve problems such as non-degradability, and achieve the effects of good compatibility, improved processing performance, and increased fertilizer efficiency

Active Publication Date: 2010-09-08
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water-swellable rubber vulcanization composition disclosed in this document mainly uses neoprene, and the water-swellable rubber vulcanization composition is not degradable

Method used

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  • Polyurethane rubber composition and preparation process thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A) First, 20 parts by weight of ammonium persulfate are dissolved in 25 parts by weight of deionized water, added into mung bean starch of 100 parts by weight, and stirred evenly to form starch mixture H 1 ;

[0053] B) The polyurethane rubber AU28 of 100 parts by weight was masticated on the open mill for 3 minutes, and 25 parts of pre-prepared starch and ammonium persulfate and deionized water mixture H were added. 1 , after mixing for 1 minute, add 1 part of sodium sulfite by weight, after mixing for 5 minutes, add 0.8 parts of stearic acid and 6 parts of zinc oxide, and mix for 1 minute, add 35 parts by weight Ammonium phosphate, after mixing for 2 minutes, add 15 parts by weight of dioctyl phthalate and 4 parts of bisphenol A epoxy resin E-44, and after mixing for 3 minutes, add 20 parts by weight XH-10 type starch grafted acrylic resin, parts by weight are 6 parts of potassium bicarbonate and 3 parts of azobisisobutyronitrile, after mixing for 2 minutes, add 5 pa...

Embodiment 2

[0057] A) At first, 6 parts by weight of ammonium persulfate are dissolved in 11 parts by weight of deionized water, added to 100 parts by weight of wheat starch, stirred evenly, and starch mixture H is formed 2 ;

[0058] B) The polyurethane rubber EU26 that is 100 parts by weight is masticated on the internal mixer for 2 minutes, and 12 parts of pre-prepared starch, ammonium persulfate and deionized water mixture H are added 2 , after mixing for 1 minute, adding parts by weight is 0.6 part of potassium sulfite, after mixing for 6 minutes, adding parts by weight is 1 part of stearic acid and zinc oxide of 8 parts, after mixing for 1 minute, adding parts by weight is 1.5 parts of N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine organic complex and 1 part of 2-mercaptobenzimidazole, after mixing for 1 minute, add parts by weight It is 48 parts of granular ordinary calcium superphosphate. After mixing for 3 minutes, add 10 parts by weight of dioctyl sebacate and 7 parts of bi...

Embodiment 3

[0062] A) at first the ammonium persulfate that is 8 parts by weight is dissolved in the deionized water that is 15 parts by weight, joins in the potato starch that is 100 parts by weight, stirs, forms starch mixture H 3 ;

[0063] B) The polyurethane rubber EU26 that is 50 parts by weight is masticated on the open mill for 2 minutes, and then the polyurethane rubber AU 28 that is 50 parts by weight is added to the open mill and mixed with polyurethane rubber Eelastothane 640 for 3 minutes, and 35 parts are added Parts pre-prepared mixture of starch and sodium persulfate and deionized water H 3 , after mixing for 1 minute, adding parts by weight was 0.7 part of potassium sulfite, after mixing for 8 minutes, adding parts by weight were 0.9 parts of stearic acid and zinc oxide of 5.6 parts, after mixing for 1 minute, adding parts by weight of 2.4 parts of N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine organic complex, after mixing for 0.5 minutes, add 40 parts by weight of ...

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Abstract

The invention provides a degradable polyurethane rubber composition with high water absorbability and a preparation process thereof. The rubber composition has both high water absorbability and biodegradability. Based on 100 parts by weight of polyester and / or polyether mixed polyurethane rubber, the polyurethane rubber composition comprises the following components: 100 parts of polyester and / or polyether mixed polyurethane rubber, 10 to 60 parts of mixture of starch, persulfate and water, 15 to 60 parts of starch series resin with high water absorbability, and other auxiliary agents. The degradable polyurethane rubber composition can be chemically degraded and biologically degraded, and has high water absorbability; and the degradation cycle can be adjusted through different matches of polyurethane rubbers of different types and / or matches of chemical degradation substances and / or biological degradation substances, the degradation cycle is 8 to 42 months, and the swelling multiplying power in distilled water is 300 to 800 percent.

Description

technical field [0001] The invention relates to a degradable polyurethane rubber composition with excellent biodegradability and chemical degradation ability, and a preparation process of the rubber composition. Background technique [0002] With the development of the times, the global rubber industry has undergone tremendous changes. The cross-linked rubber produced by the traditional rubber vulcanization process is not easy to degrade after losing its usability, and brings a lot of garbage to the human living environment. Therefore, everyone hopes to use a A cross-linked rubber material that degrades after losing its usability. CN1563155A discloses a water-swellable rubber prepared from a water-swellable resin and a preparation method thereof. Among them, the water-swellable resin is polymerized by polymerizing monomers containing polyoxyethylene ether (meth)acrylate, catalysts, initiators and crosslinking agents in proportion; the water-swellable rubber is composed of w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08L3/02C08L63/00C08L51/00C08K13/02C08K3/30C08K5/09C08K3/22C08K5/10C08K5/17C08K5/138C08K5/3447C08K3/32C08K3/36C08K3/34C08K3/26
Inventor 刘永军郭义巩红光樊洁王卓妮朱博超李锦山乔彤森杨世元谢昕竺栋荣许惠芳刘敏魏福庆金鼎铭邵月君
Owner PETROCHINA CO LTD
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