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

A kind of method utilizing lignin-dispersed calcium sulfate to prepare rubber masterbatch

A technology of calcium sulfate and lignin, which is applied in the field of rubber filling modification and resource recycling comprehensive utilization, can solve the problems of complex process and high cost, and achieve the effect of good dispersion, bright surface and rich raw materials

Active Publication Date: 2019-04-30
HUNAN MASTER SEALING
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, an effective way to solve this problem is to organically modify the surface of calcium sulfate, but the cost of the method is high and the process is complicated.

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
  • A kind of method utilizing lignin-dispersed calcium sulfate to prepare rubber masterbatch
  • A kind of method utilizing lignin-dispersed calcium sulfate to prepare rubber masterbatch
  • A kind of method utilizing lignin-dispersed calcium sulfate to prepare rubber masterbatch

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0013] Specific embodiment 1: nitrile rubber / lignin dispersed calcium sulfate composite material

[0014] (1) Under room temperature conditions, 500 grams of lignin (based on the quality of dry lignin) is mixed with 500 grams of industrial calcium sulfate (gypsum) powder (800 mesh), 600 grams of water, and then put it into a ball mill tank. Wet ball milling on a ball mill at a speed of 350 rpm for 4 hours to obtain a lignin-dispersed slurry of calcium sulfate filler.

[0015] (2) Put the slurry obtained in (1) into a 70° C. blast oven for dehydration, so that the water content of the slurry is 20%, to obtain lignin-modified calcium sulfate filler.

[0016] (3) After the nitrile rubber is masticated to the wrapping roll on the open mill, 100 parts of nitrile rubber parts are used in the mass fraction, and the ratio of 300 parts of lignin-dispersed calcium sulfate fillers is added for blending, and the mixing temperature is 100°C, mixed to constant weight, prepared nitrile rubb...

specific Embodiment 2

[0032] Specific embodiment 2: styrene-butadiene rubber / lignin dispersed calcium sulfate composite material

[0033] (1) Under room temperature conditions, 600 grams of lignin (based on the quality of dry lignin) is mixed with 400 grams of industrial calcium sulfate (gypsum) powder (800 mesh), 600 grams of water, and then put it into a ball mill tank. Wet ball milling on a ball mill at a speed of 350 rpm for 4 hours to obtain a lignin-dispersed slurry of calcium sulfate filler.

[0034] (2) After the styrene-butadiene rubber is masticated to the wrapping roll on the open mill, the styrene-butadiene rubber part is 100 parts in parts by mass, and the ratio of 300 parts of lignin-dispersed calcium sulfate fillers is added for blending, and the mixing temperature is 100°C, mixed to constant weight, prepared styrene-butadiene rubber / lignin dispersed calcium sulfate masterbatch (100:300); the mixed masterbatch was extruded and granulated by screw to obtain styrene-butadiene rubber ma...

specific Embodiment 3

[0050] Specific embodiment 3: butadiene rubber / lignin dispersed calcium sulfate composite material

[0051] (1) Prepare lignin-dispersed calcium sulfate filler according to the preparation method in Example 1.

[0052] (3) After the butadiene rubber is masticated on the open mill to the wrapping roll, the number of butadiene rubber in the mass fraction is 100 parts, and the ratio of 300 parts of calcium sulfate fillers dispersed in lignin is added for blending, and the mixing temperature is at 100°C and mixed to constant weight to prepare butadiene rubber / lignin dispersed calcium sulfate masterbatch (100:300); the mixed masterbatch was extruded and granulated by screw to obtain butadiene rubber masterbatch (butadiene rubber Rubber / Lignin Dispersed Calcium Sulfate=100:300).

[0053] (4) According to the formula dosage in Table 9, plasticize the butadiene rubber on the open mill at low temperature for 10 minutes, then add the butadiene rubber masterbatch and BIPB in turn, mix a...

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
water contentaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for preparing a rubber master batch from lignin-dispersed calcium sulfate. The method comprises the following steps: 1. lignin-dispersed calcium sulfate preparation: proportionally mixing lignin and calcium sulfate, adding water which accounts for a certain ratio of the lignin-calcium sulfate mixture, uniformly mixing, carrying out wet-process ball milling on a ball mill for 4 hours to obtain a lignin-dispersed calcium sulfate slurry, and dewatering the obtained slurry at a certain temperature to obtain a hydrous lignin-dispersed calcium sulfate filler; and 2. blending the hydrous lignin-dispersed calcium sulfate filler in the step 1 and rubber in an open mill or Banbury mixer, and carrying out extrusion and granulation to prepare the rubber master batch. The application research indicates that the rubber master batch can be used as a reinforcing agent and can greatly enhance the mechanical properties of the rubber material. The method has the advantages of simple technique, cheap and accessible raw materials and the like.

Description

technical field [0001] The invention relates to a method for preparing rubber masterbatch by using lignin-dispersed calcium sulfate, which belongs to the fields of rubber filling modification and resource recycling comprehensive utilization. Background technique [0002] Most polymers such as plastics and rubber need to be filled to improve their performance and reduce costs. Calcium sulfate is an important type of inorganic filler. The characteristics of its filled polymer include good processability and a larger filling amount than other fillers. However, like other inorganic fillers, calcium sulfate has the disadvantages of high surface energy, easy agglomeration, large polarity difference with polymer materials, difficulty in mixing, and difficulty in dispersing, which directly affects the performance of polymer composite materials. In order to improve the deficiency of calcium sulfate, organic matter such as coupling agent is usually used to modify the surface of calci...

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): C08K9/04C08K3/30C08L9/02C08L9/06C08L9/00C08J3/22
Inventor 苏胜培汪巧蕾罗琼林王曦杨治刘祥
Owner HUNAN MASTER SEALING