Acrylic-based polymer waterproofing material - Method of tests, Part 1: Determination of solid content
1992 Edition

Overview of Scope:

• Specifies test procedures for acrylic polymer waterproofing products focusing on determining their solid content.
• Sample weight range: 1.0 to 1.5 grams placed on an uncoated tin plate lid.
• Drying process conducted at 140°C for 30 minutes, followed by cooling in a desiccator for 10 minutes.
• Solid content calculation expressed as the ratio of dried residue weight to original sample weight, multiplied by 100.

Summary Table for Solid Content Test

This section ensures a uniform method for assessing acrylic waterproofing polymers' solid matter content.

Definitions Provided:

• Clarifies terms related to acrylic polymer waterproofing to ensure consistent interpretation during testing.
• Solid content refers to the percentage of non-volatile matter after drying under specified conditions.
• Part 1 of the standard focuses on solid content; other parts address properties like particle size, water absorption, pH, and chemical resistance.

Summary Table: Solid Content Testing Terms

This ensures clarity and uniformity in testing acrylic waterproofing polymers.

Test Apparatus Specifications:

• Uncoated tin plate lid: Diameter 75 ± 5 mm, height at least 5 mm.
• Analytical balance with precision of 0.001 g.
• Desiccator containing calcium chloride or silica gel desiccant.
• Thermostatically controlled oven capable of maintaining 160 ± 5°C.

Testing Procedure:

1. Dry the tin plate lid to constant weight; record as W.
2. Weigh 1.0 to 1.5 g of the sample on the lid; record as W1.
3. Spread sample evenly and dry at 140°C for 30 minutes.
4. Cool in desiccator for 10 minutes.
5. Weigh the dried residue plus lid; record as W2.

Calculation Formula: [ \text{Solid Content (%) } = \frac{W_2 - W}{W_1 - W} \times 100 ]

This section ensures accurate quantification of non-volatile solids in acrylic waterproofing materials.

Sample Handling and Preparation:

• Obtain 1.0 to 1.5 g of the acrylic polymer waterproofing material.
• Place sample on a clean, uncoated tin plate lid (75 ± 5 mm diameter, minimum 5 mm height).
• Record the combined initial weight as W1.
• Dry the sample in an oven at 140°C for 30 minutes.
• Cool the dried sample in a desiccator for 10 minutes before weighing.
• Record the weight of lid plus residue as W2.

Required Equipment:

• Uncoated tin plate lid, analytical balance (0.001 g accuracy), desiccator, and controlled oven.

Summary Table for Sampling

This process guarantees reliable sample preparation for solid content determination.

Step-by-Step Testing Instructions:

• Dry the tin plate lid until its weight stabilizes; note weight W.
• Place 1.0 to 1.5 g of the sample evenly on the lid and record the combined weight W1.
• Dry the sample in an oven at 140°C for exactly 30 minutes.
• Cool the sample in a desiccator for 10 minutes to avoid moisture uptake.
• Weigh the dried sample and lid; note weight W2.

Calculation: [ \text{Solid Content (%) } = \frac{W_2 - W}{W_1 - W} \times 100 ]

This procedure ensures precise and repeatable measurement of the non-volatile fraction in acrylic waterproofing products.

Determining Solid Content Percentage:

• Use the formula: [ \text{Solid Content (%) } = \frac{W_2 - W}{W_1 - W} \times 100 ]

Where:

• W = Weight of empty tin plate lid
• W1 = Weight of lid plus wet sample
• W2 = Weight of lid plus dried residue

Procedure Summary:

• Weigh the sample with lid (W1).
• Oven dry at 140°C for 30 minutes.
• Cool in desiccator for 10 minutes.
• Weigh dried residue with lid (W2).
• Calculate solid content using the formula above.

Additional Notes:

• Ensure weighing accuracy to ±0.001 g.
• Follow IS 2:1960 guidelines for rounding off results.

flowchart TD
    A[Sample on Tin Plate Lid] --> B[Weigh (W1)]
    B --> C[Dry at 140°C for 30 minutes]
    C --> D[Cool in Desiccator for 10 minutes]
    D --> E[Weigh Dried Residue (W2)]
    E --> F[Calculate Solid Content %]

This calculation is vital for ensuring the acrylic polymer waterproofing material meets quality standards.

Reporting Guidelines for Solid Content Results:

• Use the formula: [ \text{Solid Content (%) } = \frac{W_2 - W}{W_1 - W} \times 100 ]

• Record:

  • W: Weight of empty tin plate lid
  • W1: Weight of lid plus wet sample
  • W2: Weight of lid plus dried residue

• Sample size: 1.0 to 1.5 g.

• Drying: 140°C for 30 minutes.

• Cooling: 10 minutes in desiccator.

• Weighing precision: ±0.001 g.

• Round final results in accordance with IS 2:1960.

flowchart TD
    A[Weigh Empty Tin Plate Lid (W)] --> B[Add Sample & Weigh (W1)]
    B --> C[Dry at 140°C for 30 minutes]
    C --> D[Cool in Desiccator for 10 minutes]
    D --> E[Weigh Residue (W2)]
    E --> F[Calculate Solid Content %]

This ensures uniform and accurate reporting of solid content for acrylic waterproofing materials.

Ensuring Accuracy and Consistency:

• Sample size must range between 1.0 and 1.5 g and be spread evenly on the tin plate lid.
• Drying temperature is maintained at 140°C ± 5°C for 30 minutes.
• Cooling period in desiccator is fixed at 10 minutes to prevent moisture absorption.
• Weighing devices must have a precision of ±0.001 g.

Summary Table

flowchart TD
    A[Sample 1.0-1.5 g] --> B[Spread on Tin Plate Lid]
    B --> C[Dry at 140°C for 30 mins]
    C --> D[Cool in Desiccator for 10 mins]
    D --> E[Weigh Residue to ±0.001 g]
    E --> F[Calculate Solid Content = (W2-W)/(W1-W)*100]

This protocol ensures the test results are repeatable and reliable for quality control purposes.

Critical Testing Conditions to Follow:

1. Sample Preparation:

   • Use 1.0 to 1.5 g of product on an uncoated tin plate lid (75 ± 5 mm diameter, minimum 5 mm height).
   • Record initial weight (W1) with ±0.001 g precision.

2. Drying Process:

   • Distribute sample evenly on the lid.
   • Oven dry at 140°C ± 5°C for 30 minutes.
   • After drying, cool the sample in a desiccator containing calcium chloride or silica gel for 10 minutes.

3. Final Weight Measurement:

   • Weigh the dried residue and lid (W2) with high accuracy.

4. Solid Content Calculation: [ \text{Solid Content (%) } = \frac{W_2 - W}{W_1 - W} \times 100 ]

Where W is the empty lid weight.

Equipment Summary:

• Tin plate lid (75 ± 5 mm diameter, ≥5 mm height)
• Analytical balance (±0.001 g accuracy)
• Oven (up to 160 ± 5°C)
• Desiccator with appropriate desiccant

Following these conditions is essential to accurately determine the non-volatile solid content in acrylic waterproofing polymers, ensuring compliance with BIS standards.

Summary of Key Formula and Procedure

• The solid content percentage is calculated by drying a measured amount of sample and determining the residue weight:

[ \text{Solid Content (%) } = \frac{W_2 - W}{W_1 - W} \times 100 ]

Where:

• W = Weight of empty tin plate lid
• W1 = Weight of lid plus wet sample
• W2 = Weight of lid plus dried residue

Procedure Outline (Clause 1.5):

• Place 1.0 to 1.5 g sample on tin plate lid.
• Dry at 140°C for 30 minutes.
• Cool in desiccator for 10 minutes.
• Weigh residue with 0.001 g accuracy.
• Calculate solid content using the above formula.

Additional Information

• BIS certification and standard mark use are governed by the BIS Act 1986.
• Indian Standards are subject to periodic revisions; ensure use of the latest edition.
• Numerical results should be rounded in accordance with IS 2:1960.

flowchart TD
    A[Sample on Tin Plate Lid] --> B[Weigh (W1)]
    B --> C[Dry at 140°C for 30 minutes]
    C --> D[Cool in Desiccator for 10 minutes]
    D --> E[Weigh Residue (W2)]
    E --> F[Calculate Solid Content %]

This ensures product quality assessment aligns with IS 13435 Part 1 requirements.