Unlock instant, AI-driven research and patent intelligence for your innovation.

Rubber reinforcing agent and its preparation method

A technology of rubber reinforcing agent and activator, which is applied in the field of reinforcing agent and its preparation, can solve the problems of difficult control of conditions, low grafting rate, poor reinforcing effect, etc., and achieves good reinforcing effect and grafting rate. High, simple process effect

Inactive Publication Date: 2009-06-03
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Considering the structure of starch and rubber, starch is mainly grafted and modified with acid or acid anhydride containing c=c double bond. In the past, starch modification was often grafted with an initiator, which would often destroy the c=c double bond and improve Starch after curing is used as a rubber reinforcing agent, which cannot produce chemical crosslinking with rubber, and its reinforcing effect is not good; in the past two years, there are also direct esterification reactions between acid anhydride and starch under alkaline conditions to form alkenyl starch esters. Yes, for example, someone used this method to prepare starch dodecenyl succinate, which can be used as the wall material of microcapsules, but the starch ester prepared by this method often has a very low grafting rate, and its conditions are difficult to control

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Rubber reinforcing agent and its preparation method
  • Rubber reinforcing agent and its preparation method
  • Rubber reinforcing agent and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Maleic anhydride (solid) 22g / methanesulfonic acid (liquid) 1.0ml / at 60°C / gelatinization for 0.5 hours / reaction for 2 hours / component B:starch (mass ratio)=0.2:100.

Embodiment 2

[0024] Example 2 (intermediate value)

[0025] Acrylic acid 30ml (liquid state) / p-toluenesulfonic acid 1.5 (solid state) / at 105°C / gelatinization for 2.75 hours / reaction for 6 hours / component B:starch (mass ratio)=1.1:50.

Embodiment 3

[0027] Octenyl succinic anhydride (solid) 50g / ethanesulfonic acid (liquid) 2.0ml at 150°C / gelatinization for 5 hours / reaction for 10 hours / component B:starch=2.0:100.

[0028] figure 2 , image 3 It is a photographic figure, and the unclear text in the figure does not affect the understanding of the present invention.

[0029] The structural analysis of the starch ester prepared by this method is as follows:

[0030] 1. Infrared spectrum analysis of grafted products

[0031] The infrared spectra of starch and starch grafts are shown in Figure 1.

[0032] In Figure 1, A is starch, B is starch graft copolymer, in A, 861cm -1 、765cm -1 、575cm -1 is the rocking vibration absorption peak of cornstarch—CH2—, in B, 1581cm -1 There is a carbon-carbon double bond stretching vibration absorption peak at 1733cm -1 There are stretching vibration absorption peaks of ester groups, but pure corn starch has no absorption peaks at these two places, and at the same time, the B map is at...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a rubber reinforcer and making method, which is made of starch and component A catalyzed by catalyst component B, wherein the component A contains alkylene acid or acid anhydride with c=c, such as maleic anhydride, acroleic acid and so on; the component B is alkyl sulfonic acid, such as methanesulfonic acid, p-toluenesulfonic acid and so on. The making method of starch derivant comprises the following steps: a. gelatinizing starch and activator pyridine in the N, N-dimethyl formamide solution under 60-150 deg.c for 0.5-5h; b. adding fitful component A and little component B in the step a reacting solution; reacting at 60-150 deg.c for 2-10h; washing; sucking; drying; grinding; obtaining the starch derivant.

Description

Technical field: [0001] The invention relates to a reinforcing agent and a preparation method thereof, in particular to a starch derivative rubber reinforcing agent and a preparation method thereof. Background technique: [0002] Modified starch is a substance called "engineered biopolymer filler", which is obtained from ordinary starch through various modifications. In recent years, research on starch denaturation at home and abroad has progressed rapidly, and its products are widely used in textiles, food, medicine, petrochemicals, papermaking and other fields. However, starch is rarely used in rubber. Using starch as a reinforcing agent for rubber can obtain low-cost and high-quality new rubber composite materials, and may even be biodegradable. [0003] Due to the limitations of the structure of starch itself, the reinforcing effect of pure starch as a rubber reinforcing agent is not ideal, so starch needs to be modified. There are many methods of starch modification, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08L21/00C08B31/00
Inventor 方庆红郑志立宋云保
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY